CN217438095U - A cracking system for cracking polymers - Google Patents

Abstract

The utility model relates to a realize schizolysis system of schizolysis high polymer, including pretreatment unit and schizolysis unit, pretreatment unit includes compression feed arrangement, first extrusion device, second extrusion device, and compression feed arrangement's discharge gate is linked together with first extrusion device's feed inlet, and first extrusion device's discharge gate is connected with second extrusion device's feed inlet, and the schizolysis unit includes the diaphragm type schizolysis reaction chamber three or more than three, and the discharge gate of second extrusion device is linked together with the diaphragm type schizolysis reaction chamber three or more than three in the schizolysis unit. The first extrusion device and the second extrusion device are both provided with a first heating element. Adopt the utility model discloses a realize schizolysis system of schizolysis high polymer, the pyrolysis time is short, and the reaction is complete, is difficult for the carbon deposition, can innocent treatment chlorine-containing polymer, and the range of application is wide.

Description

A cracking system for cracking polymers

technical field

The utility model relates to the technical field of waste treatment, in particular to a cracking system for realizing cracking of high polymers.

Background technique

At present, the cracking reactors used for polymer cracking at home and abroad mainly include tubular cracking reactors, fluidized bed cracking reactors, groove rotary cracking reactors, and centrifugal scraper film-forming thermal cracking devices. These cracking reactors have the following shortcomings:

Using the vertical tube cracking reactor, the petroleum or high polymer is easy to cause carbon formation in the tubular cracking reactor during the cracking process, resulting in incomplete cracking, and even the cracking reaction is difficult to carry out.

Using a fluidized bed cracking reactor for the cracking of waste plastics is not effective. Since the plastics will produce high-viscosity oily or waxy substances in the process, the fluidity of the heating carrier will be deteriorated and the cracking effect will be affected. It is necessary to continuously replenish new ones. Heat the carrier.

There are also trough-type rotary cracking reactors used in China to crack waste plastics. There are long reaction periods, incomplete reactions, carbon formation in equipment, and the end product is viscous coke that is difficult to handle. The secondary pollution is serious and the equipment occupies a large area.

At present, the ideal waste plastic cracking equipment is a centrifugal scraper film-forming thermal cracking device, which has the advantages of fast reaction speed, not easy to form carbon, 100% effective conversion, no secondary pollution, and overcomes the shortcomings and deficiencies of the previous cracking reactors. This kind of cracking device has a small processing capacity, which can only be 50-60 kg/hour.

None of the above-mentioned cracking reactors is suitable for the cracking treatment of polyvinyl chloride (PVC), and the thermal cracking process will generate hydrogen chloride (HCl) gas, which will corrode equipment and pollute the environment.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art, and to provide a cracking high polymer with short cracking time, complete reaction, not easy to form carbon, no secondary pollution, and a large amount of harmless treatment of chlorine-containing polymers. The pyrolysis system of the material is small, and the equipment occupies a small area.

In order to achieve above-mentioned purpose, the cracking system that realizes cracking high polymer of the present invention has the following composition:

The main feature of the cracking system for cracking high polymers is that the cracking system includes a pretreatment unit and a cracking unit, and the pretreatment unit includes a compression feeding device, a first extrusion device, and a second extrusion device. The outlet of the compression feeding device is communicated with the inlet of the first extrusion device, and the outlet of the first extrusion device is connected to the second extrusion device. The feed port of the outlet device is connected, the cracking unit includes three or more membrane cracking reaction chambers, and the discharge port of the second extrusion device is connected to three of the cracking units. Or three or more membrane cleavage reaction chambers are connected. The first extrusion device and the second extrusion device are both provided with a first heating element.

Preferably, the discharge port of the first extrusion device is connected with the feed port of the second extrusion device through a connecting device, and the connecting device is provided with a cylindrical upper part and a conical lower part, The top end of the cylindrical upper part is provided with an exhaust port, the cylindrical upper part is provided with a first connection port, and the first connection port and the discharge port of the first extrusion device are slidable Sealed connection, the bottom end of the conical lower part is provided with a second connection port, the second connection port is communicated with the feed port of the second extrusion device, the first extrusion device And/or the second extrusion device is provided with an exhaust port for discharging exhaust gas generated by heating. The conical lower part of the connecting device is provided with a third heating element for heating the flowing paste-like high polymer.

Preferably, the first extrusion device includes a first reducer, a first coupling, a first bearing housing and a first screw barrel, and the first reducer, the first coupling, the first The bearing box, the feeding port of the first extruding device, the first screw barrel and the discharging port of the first extruding device are connected in sequence, and the second extruding device includes a second reducer, a second coupling , the second bearing box and the second screw barrel, the second reducer, the second coupling, the second bearing box, the feed port of the second extrusion device, the second screw barrel and the second extrusion device The discharge ports are connected in sequence, the first screw barrel and the second screw barrel are respectively provided with a first screw and a second screw connected with the first bearing housing and the second bearing housing. Both the first screw barrel and the second screw barrel are provided with exhaust holes.

Preferably, the compression feeding device includes a cylindrical upper cylinder and a cylindrical lower cylinder, the diameter of the cylindrical upper cylinder is larger than the diameter of the cylindrical lower cylinder, and the cylindrical upper cylinder has a diameter larger than that of the cylindrical lower cylinder. The compression feeding device is provided with a stirring structure, the stirring structure includes a stirring shaft and a combination blade, and the combination blade includes a rectangular blade corresponding to the cylindrical upper body and a cylindrical lower part The helical blade corresponding to the cylinder.

Preferably, the discharge port of the second extrusion device is communicated with three or more membrane cracking reaction chambers in the cracking unit through a split head. The diverter head includes a connecting elbow and a shell, one end of the connecting elbow is communicated with the discharge port of the second extrusion device, and the other end of the connecting elbow is connected to the shunt. The inlet end of the shell of the head is connected with the inlet end of the shell, and the inlet end of the shell is provided with a porous circular plate, and the interior of the shell is provided with a cone core and a baffle plate arranged around the cone core. Described baffle divides described shell interior space into the compartment corresponding to the number of described membrane cracking reaction chamber, and the outlet end of described shell is provided with corresponding to described membrane cracking reaction. The number of discharge openings in the cavity; the casing is provided with a second heating element.

Preferably, the cracking unit further includes an oil and gas collection device, the number of the oil and gas collection devices corresponds to the number of the membrane cracking reaction chambers, and the oil and gas collection device also includes and the membrane type. The first oil and gas transportation branch pipe connected with the cracking reaction chamber, the catalytic adsorption tower connected with the gas outlet of the first oil and gas transportation branch pipe, the second oil and gas transportation branch pipe connected with the catalytic adsorption tower, and the The first condenser connected to the outlet of the second oil and gas delivery branch pipe, the third oil and gas delivery branch pipe connected to the first condenser, the receiving tank connected to the outlet of the third oil and gas delivery branch pipe, the membrane The air outlet of the type cracking reaction chamber is communicated with the air inlet at the bottom of the catalytic adsorption tower through the first oil and gas conveying branch pipe, and the air outlet of the catalytic adsorption tower is connected to the top of the first condenser through the second oil and gas conveying branch pipe. The gas port is communicated with each other, the gas-liquid outlet on the top of the first condenser is communicated with the gas-liquid inlet on the side of the receiving tank through the third oil and gas conveying branch pipe, and the gas outlet on the top of the receiver tank is communicated with the main combustion pipe, so The bottom condensate outlet of the first condenser is communicated with the condensate main pipe.

More preferably, the dewaxing furnace includes a dewaxing furnace cylinder, a fourth reducer, and scraper stirring. The scraper stirring includes a main shaft, a scraper frame, a scraper, a bottom scraper, a bottom shaft, and a high-temperature sliding bearing. The scraper frame is fixed on the main shaft, the scraper is suspended on the scraper frame, and the bottom scraper is installed at the bottom of the scraper frame.

More preferably, the catalytic adsorption tower includes an upper end cover, a first middle section, a second middle section, a lower end cover, an upper grid, and a lower grid, the upper end cover, the first middle section, and the second middle section. and lower end caps, which are connected in sequence from top to bottom to form a tower body, and the upper grid and the lower grid are sequentially fixed in the tower body from top to bottom.

Preferably, the membrane-type cracking reaction chamber includes a reaction chamber cylinder, a third reducer, and agitation with scales, and the agitation with scales includes a stirring shaft, a distribution plate, a lantern frame, and movable The frame is fixed on the stirring shaft, the movable scales are fixed on the lantern frame, and the movable scales can rotate freely; the reaction chamber cylinder is formed by setting the fourth heating element from top to bottom. A temperature zone reaction chamber cylinder, a second temperature zone reaction chamber cylinder, and a third temperature zone reaction chamber cylinder.

Preferably, the cracking unit further comprises a dewaxing furnace, a fifth oil and gas transmission branch pipe connected to the dewaxing furnace, a catalytic flash tower connected to the outlet of the fifth oil and gas transmission branch pipe, and a fifth oil and gas transmission branch pipe connected to the dewaxing furnace. The sixth oil and gas transport branch pipe that is connected to the catalytic flash tower, the second condenser that is connected to the outlet of the sixth oil and gas transport branch pipe, and the gas-liquid separation that is connected to the lower outlet of the second condenser The tank, the seventh liquid conveying branch pipe connected with the discharge port at the bottom of the gas-liquid separation tank, the eighth gas conveying branch pipe and the telescopic pipe connected with the exhaust port on the side of the gas-liquid separation tank. The feeding port of the wax furnace is communicated with the feeding port of the membrane cracking reaction chamber through a telescopic tube, and the gas outlet of the dewaxing furnace is connected to the inlet of the catalytic flash tower through the fifth oil and gas conveying branch pipe. The outlet of the catalytic flash tower is communicated with the inlet of the second condenser through the sixth oil and gas transport branch pipe, and the outlet at the bottom of the second condenser is connected to the upper inlet of the gas-liquid separation tank. The gas port is directly connected, and the side exhaust port of the gas-liquid separation tank is communicated with the exhaust main pipe through the eighth gas conveying branch pipe; the dewaxing furnace is provided with a fourth inductive heating element, and the The catalytic flash column is provided with a sixth heating element.

More preferably, the discharge port at the bottom of the dewaxing furnace is connected with the feed port of the carbon black cooler, the discharge port of the carbon black cooler is connected with the carbon black collection box, and the carbon black The upper part of the collection box is provided with a nitrogen inlet, and the carbon black cooler includes a fourth reducer, a third coupling, a third bearing box, and a third screw barrel, which are connected in sequence and fixed on the base through a bracket. The three screw barrels are equipped with a screw rod connected with the third coupling, and the outer wall of the third screw barrel is provided with a cooling water tank.

More preferably, the catalytic flash tower comprises the upper end of the shell, the middle section of the first shell, the middle section of the second shell, the lower end of the shell, the first grid, the second grid, the first umbrella cover, the second umbrella cover, the The upper end of the outer shell, the middle end of the first outer shell, the middle end of the second outer shell, and the lower end of the outer shell are sequentially connected from top to bottom to form a tower body, and the lower end of the catalytic flash tower is provided with a sixth heating Components, the first grid, the second grid, the first umbrella cover and the second umbrella cover are sequentially fixed in the tower body from top to bottom.

Preferably, the compression feeding device, the first extrusion device, the second extrusion device are installed on a platform higher than the membrane cracking reaction chamber, and the Receiving tank, the first condenser, the catalytic adsorption tower, the membrane cracking reaction chamber, the second condenser, the catalytic flash tower, the gas-liquid separation tank , The dewaxing furnace and the carbon black cooler are sequentially assembled on the same skid support from top to bottom.

The cracking system of the utility model for realizing cracking of high polymers has strong adaptability, and can not only process waste plastics (PE, PP, PS), but also process high polymers such as waste oil and residual oil, and can also process high polymers containing waste plastics (PE, PP, PS). Chlorine-based polyvinyl chloride has the advantages of large processing capacity, fast reaction speed, effective conversion rate close to 100%, no carbon formation on the barrel wall of the equipment, no secondary pollution, and is suitable for continuous production all year round. The scale can reach 8 to 30 tons/day, which overcomes the shortcomings of the current domestic and foreign waste plastic treatment equipment, such as long reaction period, low oil conversion rate, solid waste and waste water discharge, serious carbon deposition, and difficulty in cleaning, resulting in secondary pollution. The cracking system for realizing cracking of high polymers of the utility model has the advantages of short cracking time, complete reaction, no carbon formation, no secondary pollution, harmless treatment of chlorine-containing polymers, small footprint and wide application range.

Description of drawings

FIG. 1 is a structural cross-sectional view of the first embodiment of the cracking system for realizing cracking of high polymers according to the present invention.

FIG. 2 is a top view of the first embodiment of the cracking system for cracking high polymers according to the present invention.

FIG. 3 is a structural cross-sectional view of a compression feed hopper in a cracking system for cracking high polymers according to the present invention.

4 is a structural cross-sectional view of the first extrusion device in the cracking system for realizing cracking of high polymers according to the present invention.

5 is a structural cross-sectional view of the second extrusion device in the cracking system for cracking high polymers according to the present invention.

6 is a structural cross-sectional view of the scraper assembly in the cracking system for cracking high polymers according to the present invention.

FIG. 7 is a partial enlarged cross-sectional view of CC in FIG. 6 .

FIG. 8 is a cross-sectional view of the structure of the first split head in the cracking system for cracking high polymers according to the present invention.

FIG. 9 is a partial enlarged cross-sectional view taken along line E-E of FIG. 8 .

10 is a structural cross-sectional view of the stirring assembly in the cracking system for cracking high polymers according to the present invention.

FIG. 11 is a partial enlarged cross-sectional view of D-D in FIG. 10 .

12 is a structural cross-sectional view of a carbon black cooler in a cracking system for cracking high polymers according to the present invention.

Fig. 13 is a structural cross-sectional view of the connecting device in the cracking system for realizing cracking of high polymers according to the present invention.

FIG. 14 is a top view of the second embodiment of the cracking system for cracking high polymers according to the present invention.

FIG. 15 is a cross-sectional view of the second split head in the cracking system for cracking high polymers according to the present invention.

16 is a cross-sectional view of a receiving tank in the cracking system for cracking high polymers according to the present invention.

17 is a cross-sectional view of the carbon black collection box in the cracking system for cracking high polymers according to the present invention.

18 is a cross-sectional view of the catalytic absorption flash tower in the cracking system for cracking high polymers according to the present invention.

FIG. 19 is a cross-sectional view of the catalytic attachment tower in the cracking system for cracking high polymers according to the present invention.

Reference number:

1, 2, 10 First condenser

3 receiving tanks

4, 11, 12 Catalytic adsorption tower

5a, 5b, 5c stirring

6 Second condenser

7 Gas-liquid separation tank

8 Catalytic flash tower

9 Sixth heating element

13 First split head

14a, 14b, 14c Membrane lysis reaction chamber

15 Compression feeder

16 The first extrusion device

17 Connections

18 Second extrusion device

19 Oil storage tank

20 Dewaxing furnace

21 Combination valve

22 Carbon Black Cooler

23, 24, 25 Pneumatic combination valve

26 Toner collection box

27 spatula stirring

28 Oil storage tank

29 Gas compressor

30 LPG storage tanks

a First reducer

b first coupling

c first bearing housing

d The feed port of the first extrusion device

e first screw

f Exhaust port of the first extrusion unit

g First screw barrel

h, r first heating element

i The discharge port of the first extrusion device

j The first fixing frame

k first base

l Second reducer

m Second coupling

n Second bearing housing

o Feed port of the second extrusion unit

p Second screw

q Second screw barrel

s The outlet of the second extrusion unit

t Second holder

x Second base

λ, η, α Fourth heating element

d1 connecting elbow

d2 perforated disc

d3 cover

d4 bulkhead

d5 Second heating element

d6 cone

d7 shell

d8 The discharge port of the first split head

h1 Feed port of carbon black cooler

h2 Discharge port of carbon black cooler

b1 The barrel of the membrane cracking reaction chamber

b2 Dewaxing furnace barrel

t3 Third heating element

t4 Fourth heating element

t5 Fifth heating element

A bracket

B Fourth Coupling

C Bearing box

D stirring shaft

E Cylindrical upper barrel

F rectangular blade

H fifth reducer

J Cylindrical lower barrel

K helical blade

S Spindle

T distribution plate

U lantern stand

V Active Scales

W Bottom shaft

X discharge bottom scraper

Y High temperature plain bearing

B1 Cylindrical upper exhaust port

B2 Connection device barrel

B3 first connector

B4 Second connector

C1 upper end of shell

C2 first grid

C3 first shell middle section

C4 Second Shell Middle Section

C5 Second Grid

C6 first umbrella cover

C7 Second umbrella cover

Lower shell end of C8 catalytic flash column

F1 upper end cap

F2 up grid

F3 first middle section

F4 Second Intermediate Section

F5 down grid

F6 lower end cap

H1 fourth reducer

H2 Third Coupling

H3 third bearing housing

H4 Third screw barrel

H5 bracket

H6 cooling water tank

H7 base

H9 screw

J1 third reducer

L1 spindle

L2 scraper holder

L3 scraper

L4 discharge bottom scraper

L5 bottom shaft

L6 high temperature plain bearing

Top vent for N1 receiver tank

N2, N3, N4 oil and gas imports

N5, N6 receiving tank outlet

S4 bulkhead

S5 cone

S7 housing

T1 case cover

Feed port for T2 carbon black collection box

T3 cabinet

T4 trolley

T5 nitrogen inlet

Z1 discharge branch

Z2 first oil and gas delivery branch

Z3 Second oil and gas pipeline

Z4 The third oil and gas pipeline

Z5 Fourth oil and gas pipeline

Z6 fifth oil and gas pipeline

Z7 Liquid Sealing Tube

Z8 exhaust manifold

Z9 bottom telescopic tube

Z10 Gas Main

Detailed ways

In order to describe the technical content of the present invention more clearly, further description will be given below with reference to specific embodiments.

As shown in Figure 1, Figure 2, Figure 13, a specific embodiment of a cracking system for realizing a cracking polymer is provided for the utility model, including a cracking unit for carrying out a cracking reaction and a process for performing the cracking reaction. The pretreatment unit of the polymer, the pretreatment unit includes a compression feeding device 15, a first extrusion device 16, a second extrusion device 18, and a first split head 13. The compression feeding device The discharge port of 15 is communicated with the feed port of the first extrusion device 16, and the discharge port of the first extrusion device 16 is communicated with the central feed port of the connection device 17, so The bottom discharge port of the connection device 17 is communicated with the feed port of the second extrusion device 18 , and the discharge port of the second extrusion device 18 is fed with the first split head 13 The mouth is connected, the outlet of the first split head 13 is connected with the cracking unit, the first extrusion device 16 and the second extrusion device 18 are both provided with first heating elements h, r, The first extrusion device 16 is provided with an exhaust port f for discharging exhaust gas generated by heating. The first heating elements h, r may be three groups of heating elements such as inductive heating coils.

In a preferred embodiment, the outlet i of the first extrusion device 16 is connected to the inlet o of the second extrusion device 18 through a connecting device 17, as shown in FIG. 13 . As shown, the cylinder body B2 of the connecting device 17 is provided with a cylindrical upper part and a conical lower part, the top end of the cylindrical upper part is provided with an exhaust port B1, and the cylindrical upper part is provided with a first connection port B3 , the first connection port B3 is slidably connected with the discharge port i of the first extrusion device 16, the bottom end of the conical lower part is provided with a second connection port B4, the The second connection port B4 communicates with the feed port o of the second extrusion device 18 .

Wherein, the outer wall of the connection device 17 is wound with a third heating element such as an inductive coil, and the first connection port B3 has a stuffing box, which is connected to the discharge port i of the first extrusion device 16 . The top of the cylindrical upper part of the connecting device 17 is provided with an exhaust port B1, which is connected to the air inlet of the hydrogen chloride treatment device, and the third heating element t3 provided on the outer wall of the connecting device 17 keeps the connecting device at a temperature of 260°C for dechlorination of polyvinyl chloride. , hydrogen chloride is continuously extracted from the exhaust hole B1. The waste polymer in the molten state in which the hydrogen chloride has been removed in the connection device 17 enters the second extrusion device 18 from the second connection port B4 at the bottom of the connection device 17 .

In a preferred embodiment, as shown in FIG. 4 , the first extrusion device 16 includes a first reducer a, a first coupling b, a first bearing box c, a first reducer a, a first shaft coupling b, a first A feed port d of the extrusion device 16, a first screw cylinder g, and a discharge port i of the first extrusion device 16, the first screw cylinder g is provided with the first bearing box c. Connect the first screw e. As shown in FIG. 5 , the second extrusion device 18 includes a second reducer l, a second coupling m, a second bearing housing n, and a feed port o of the second extrusion device 18, which are connected in sequence. , the second screw barrel q, the discharge port s of the second extrusion device 18, the second screw barrel q is provided with a second screw p connected to the second bearing housing n.

In a preferred embodiment, as shown in FIG. 4 , a vent hole f is provided in the middle of the first screw barrel g in the first extrusion device 16 , and a vent element is installed in the vent hole f.

As shown in Figures 4 and 5, the first extrusion device 16 is also provided with a first fixing frame j and a first base k, and the second extrusion device 18 is also provided with a second fixing frame t and a second base x.

The first screw barrel g of the first extrusion device 16 can slide freely in the first connection port B3 of the connecting device without air leakage, which eliminates the thrust generated by the thermal expansion of the first extrusion device 16. The heating element h is used to heat the waste plastic fragments in the first extrusion device 16. When the first screw e of the first extrusion device 16 rotates, the waste plastic fragments move forward, and are heated, melted and heated up during the moving process. The water vapor and air generated during the heating process are discharged from the exhaust element in the exhaust hole in the middle of the first screw barrel g, and enter the absorption unit for processing. When the chlorine-containing plastic fragments in the melting and heating waste plastics are heated to the dechlorination temperature of 180-260°C, the molten polyvinyl chloride is dechlorinated to generate hydrogen chloride, which is discharged into the hydrogen chloride absorption treatment system through the connecting device 17 . When the second screw p rotates, the molten waste plastic continues to move forward, and at the same time, it is heated by the first heating element r outside the second screw barrel q to a feed temperature of 360°C.

In a preferred embodiment, as shown in FIG. 3 , the compression feeding device 15 includes a cylindrical upper cylinder E and a cylindrical lower cylinder J, and the cylindrical upper cylinder E has a The diameter is larger than the diameter of the cylindrical lower body J, the compression feeding device is provided with a stirring structure, and the stirring structure includes a stirring shaft D and a combined blade, and the combined blade includes the same The rectangular blade F corresponding to the cylindrical upper cylinder body and the helical blade K corresponding to the cylindrical lower cylinder body.

As shown in FIG. 3 , in the compression feeding device 15 , the stirring shaft D is sequentially connected with a fifth reducer H, a fourth coupling B, a bearing box C and a bracket A. When the stirring shaft D rotates, under the action of the rectangular blade F, the material moves to the center of the compression feeding device 15, and the material moved to the center is pressed into the feed of the first extrusion device 16 by the rotating screw blade K. Feed port d.

In a preferred embodiment, as shown in FIG. 1 and FIG. 14 , the cracking unit includes three or more membrane cracking reaction chambers, and the discharge of the second extrusion device 18 The port s communicates with the three 14a, 14b, 14c or more than three membrane cleavage reaction chambers in the cleavage unit through the first split head 13. As shown in Figures 1 and 2, in this embodiment, the situation where the cracking unit includes three membrane cracking reaction chambers 14a, 14b, 14c is shown, as shown in Figure 14, which is the second embodiment of the present invention, The case where the cleavage unit includes four membrane cleavage reaction chambers is shown.

In a preferred embodiment, as shown in FIG. 8 , the first diverter head 13 includes a connecting elbow d1 and a casing d7, and one end of the connecting elbow d1 is connected to the second extrusion pipe d1. The outlet of the device 18 is communicated, and the other end of the connecting elbow d1 is connected with the inlet end of the casing d7 of the first split head, and the inlet end of the casing d7 is provided with a The perforated circular plate d2, the inside of the casing is provided with a cone core d6 and a partition d4 arranged around the cone core d6, and the partition plate d4 is used to separate the internal space of the casing d7 into The compartment corresponding to the number of the membrane cracking reaction chambers, the outlet end of the shell d7 is provided with a discharge port d8 corresponding to the number of the membrane cracking reaction chambers; the shell The body is provided with a second heating element d5.

As shown in FIG. 9 and FIG. 15 , it is shown that the partition plate divides the inner space of the shell into three and four compartments, and the corresponding membrane cracking reaction chambers are three and four, respectively. Other numbers of membrane cracking reaction chambers, compartments, and discharge ports can be set according to the actual processing capacity and other needs. As shown in FIG. 15 , in the case of being divided into four compartments, the casing S7 is provided with a cone core S6 and a partition S4 arranged around the cone core, and the partition plate S4 divides the internal space of the casing S7 into four compartments.

As shown in FIG. 8 , the first split head 13 is also provided with a cover plate d3, the discharge ports d8 are respectively connected with the discharge branch pipe Z1, and the other end of the discharge branch pipe Z1 is respectively connected with the membrane cracking reaction chambers 14a, 14b, 14c The feed port is connected, the first diverter head 13 pushes the molten waste plastic extruded from the discharge port s of the second extrusion device 18, through the perforated circular plate d2, the material changes from a spiral motion to a linear motion, and then passes through the perforated circular plate d2. The separator d4 and the cone core d6 divide the material, and then are pressed into the feed ports of the corresponding membrane cracking reaction chambers 14a, 14b, and 14c through the three discharge ports d8 and the three discharge branch pipes Z1, respectively.

In a preferred embodiment, as shown in FIG. 1 , the membrane cleavage reaction chambers 14a, 14b, and 14c include the cylinder body b1 of the membrane cleavage reaction chamber, and the cylinder of the membrane cleavage reaction chamber The body b1 is heated by the fourth heating element t2 arranged on the cylinder wall into three different temperature regions, low temperature, medium temperature and high temperature, which are distributed from top to bottom. For example, three sets of high-frequency inductive heating coils λ, η, α are wound on the outside of the cylinder body b1 of the membrane cracking reaction chamber. ～380℃, the middle temperature is 400℃～450℃, and the lower part is 450℃～500℃, so that different waste plastics can be cracked in different temperature regions, so as to avoid the cracking temperature being too high or too low, so that the carbon black generated at the bottom is more delicate.

As shown in Figure 1, Figure 2, Figure 6, Figure 7, the membrane cracking reaction chambers 14a, 14b, 14c are equipped with stirring 5a, 5b, 5c driven by the third reducer J1, as shown in Figure 6, the Stirring 5a, 5b, 5c is composed of main shaft S, distribution plate T, lantern frame U, movable scale V, discharge bottom scraper X, bottom shaft W and high temperature sliding bearing Y, and the main shaft S is fixedly connected from top to bottom in order Distribution plate T, lantern frame U, discharge bottom scraper X, bottom shaft W and high temperature sliding bearing Y, as shown in Figure 6, the movable scale V is connected to the lantern frame U in a suspended manner, and the membrane cracking reaction chambers 14a, 14b , 14c bottom is equipped with pneumatic combination valve 23, 24, 25, bottom telescopic tube Z9, membrane cracking reaction chamber 14a, 14b, 14c, top is equipped with third reducer J1 driving stirring 5a, 5b, 5c, bottom material outlet Pneumatic combination valves 23, 24 and 25 are installed, which are connected with the bottom telescopic pipe Z9, and the other end of the bottom telescopic pipe Z9 is connected with the feed port on the top of the dewaxing furnace 20.

The hot-melt paste-like waste plastic discharged from the discharge port d8 of the first distribution head 13 is pressed into the rotating distribution plate T in the membrane cracking reaction chambers 14a, 14b and 14c through the discharge branch pipe Z1. It is thrown to the high-temperature cylinder wall of the membrane cracking reaction chamber 14a, 14b, 14c under the action of the action of gravity and the rotating movable scale V, the hot-melt paste-like waste plastic on the cylinder wall is scraped into a film During the downward movement, the hot-melt paste-like waste plastic instantaneously undergoes thermal cracking reaction on the cylinder wall at different temperatures, and the discharge bottom scraper X can scrape the high boiler at the bottom to the cylinder wall After being reheated, the generated oil and gas vapor is discharged from the membrane cracking reaction chambers 14a, 14b, and 14c, and enters the catalytic adsorption towers 4, 11, and 12 for further cracking and removal of organic chlorine.

In a preferred embodiment, as shown in Figure 1 and Figure 19, the cracking unit includes catalytic adsorption towers 4, 11, 12, and the catalytic adsorption tower consists of an upper end cover F1, a first intermediate section F3, The second intermediate section F4, the lower end cover F6, the upper grid F2, and the lower grid F5 are composed. The upper end cover F1, the first middle section F3, the second middle section F4, and the lower end cover F6 are sequentially connected to form a tower body from top to bottom, and the upper grid F2, The lower grid F5 is sequentially fixed in the tower body from top to bottom, the upper grid of the catalytic adsorption tower is equipped with adsorbent, the lower grid is equipped with catalyst, and the cracking reaction and organic chlorine removal are completed in the same tower.

In a preferred embodiment, as shown in FIG. 1 , the cracking unit includes a dewaxing furnace 20, and the three feeding ports of the dewaxing furnace 20 are connected to the corresponding The discharge ports of the pneumatic combination valves 23, 24, and 25 at the bottom of the three membrane cracking reaction chambers 14a, 14b, and 14c communicate with each other, and the dewaxing furnace 20 is provided with a fifth heating element such as an induction heating coil.

As shown in Figure 1, Figure 10, Figure 11, the dewaxing furnace 20 is composed of a cylinder b2, a scraper stirring 27, a high temperature sliding bearing L6, and a combined valve 21. As shown in Figures 10 and 11, the scraper stirring 27 It is composed of main shaft L1, scraper frame L2, scraper L3, bottom scraper L4, bottom shaft L5 and high temperature sliding bearing L6. The main shaft L1 is fixedly connected to the scraper frame L2, bottom scraper L4, bottom shaft L5 and the scraper L3 is suspended from top to bottom. On the scraper frame L2, the bottom scraper is installed at the bottom of the scraper frame L2.

The carbon black powder from the material outlet at the bottom of the membrane cracking reaction chambers 14a, 14b, 14c falls into the dewaxing furnace 20 through the combined valve 21 and the bottom telescopic tube Z9 from the feed port at the top of the dewaxing furnace 20 under the action of gravity, Under the rotating action of the scraper stirring 27, the high-boiling matter in the carbon black powder is evaporated by heating to obtain a dry and loose carbon black product. Catalytic cracking, the generated oil and gas enters the second condenser 6 from the oil and gas inlet at the upper part of the second condenser through the fifth oil and gas transport branch pipe Z6, and the condensed oil and gas is discharged from the bottom of the second condenser 6 and enters the gas-liquid separation tank 7, without condensation. The gas is discharged from the top of the gas-liquid separation tank 7 and communicated with the gas main pipe Z10 through the seventh gas delivery branch pipe, and the condensate flows into the oil storage tank 19 from the bottom of the gas-liquid separation tank 7 .

In a preferred embodiment, as shown in FIG. 18, the catalytic flash tower 8 consists of the upper end of the shell, the middle section of the first shell, the middle section of the second shell, the lower end of the shell, the first grid, the second grid, and the first umbrella. Shaped cover C6, the second umbrella-shaped cover C7 is composed, the upper end of the outer shell, the middle section of the first outer shell, the middle section of the second outer shell, and the lower end of the outer shell are sequentially connected from top to bottom to form a tower body, so The lower end of the casing is provided with a sixth heating element 9 . The first grid, the second grid, the first umbrella-shaped cover, and the second umbrella-shaped cover are sequentially fixed in the tower body from top to bottom.

The reflux liquid in the catalytic flash tower 8 falls on the first umbrella cover C6 and the second umbrella cover C7 successively, and the reflux liquid falling on the second umbrella cover C7 is scattered on the ground under the action of gravity. The high temperature shell wall at the lower end C8 of the shell of the catalytic flash tower 8 evaporates instantaneously, and the evaporated oil and gas rises into the catalyst layer for cracking again.

In a preferred embodiment, as shown in Figures 1 and 12, the discharge port at the bottom of the dewaxing furnace 20 is connected to the feed port h1 of the carbon black cooler 22, and the carbon black The discharge port h2 of the cooler 22 is connected with the carbon powder collection box 26, and the upper part of the carbon powder and carbon black collection box 26 is provided with a nitrogen inlet T5 for filling nitrogen into the box body T3 to prevent the carbon black from being exposed to high temperatures. Spontaneous combustion.

As shown in Figures 12 and 17, the carbon black cooler 22 consists of a fourth reducer H1, a third coupling H2, a third bearing housing H3, a feed port h1, a third screw barrel H4, a bracket H5, and a cooling water tank H6, base H7, screw H9, and discharge port h2 are composed. The lower part of the cooling water tank is provided with a water inlet, and the upper part is provided with a water outlet. The carbon black collection box 26 is composed of a box cover T1, a feeding port T2, a box body T3, and a trolley T4.

As shown in FIG. 1 and FIG. 16, in a preferred embodiment, the cracking unit includes three oil and gas collection devices corresponding to the number of the three membrane cracking reaction chambers 14a, 14b, 14c , the oil and gas collection device comprises three first oil and gas transport branch pipes Z2 connected with the membrane cracking reaction chamber, three catalytic adsorption pipes connected with the gas outlets of the three first oil and gas transport branch pipes Z2 Towers 4, 11, 12, the first condensers 1, 2, 10 connected with the three second oil and gas transport branch pipes Z3 that are connected with the oil and gas outlet at the top of the catalytic adsorption tower, and the three second oil and gas transport branch pipes Z3 outlets , the three third oil and gas transportation branch pipes Z4 connected with the bottom of the three first condensers 1, 2, 10, a receiving tank 3 connected with the three third oil and gas transportation branch pipes Z4, and the receiving tank The top of the 3 is connected to the gas main Z10.

Wherein, the receiving tank 3 is provided with oil and gas inlets N2, N3, N4 and outlets N5, N6, and the three oil and gas inlets of the receiving tank 3 are respectively connected with the three The oil and gas outlets at the bottom of the first condensers 1, 2, and 10 are communicated with each other, and the oil and gas inlets at the top of the three first condensers are connected to the three catalytic adsorption towers 4 and 11 through the three second oil and gas conveying branch pipes Z3. The oil and gas outlets at the top of 12 are communicated, and the oil and gas inlets at the bottom of the three catalytic adsorption towers 4, 11 and 12 are communicated with the three oil and gas outlets of the membrane cracking reaction chamber through the three first oil and gas conveying branch pipes Z2. The exhaust port N1 at the top of the receiving tank 3 is connected with the gas main pipe Z10.

In a preferred embodiment, the compression feeding device 15, the first extruding device 16, the second extruding device 18, are installed on a platform higher than the membrane cracking reaction chambers 14a, 14b, 14c Above, the receiving tank 3, the first condenser 1, 2, 10, the catalytic adsorption tower 4, 11, 12, the membrane cracking reaction chamber 14a, 14b, 14c, the The second condenser 6, the catalytic flash tower 8, the gas-liquid separation tank 7, the dewaxing furnace 20, and the carbon black cooler 22 are assembled on the same skid support from top to bottom.

The utility model provides an application process using a cracking system for realizing cracking of high polymers, which specifically includes:

1) Equipment preheating: First, start the induction heaters of each membrane cracking reaction chamber respectively, and heat the cylinder walls of each membrane cracking reaction chamber at the same time, so that the temperature on the cylinder wall gradually increases from top to bottom, and the upper part starts to increase. The initial temperature is 360-400°C, and increases to 450-500°C in the lower cylinder wall according to the temperature of the cylinder wall. When the internal temperature of each membrane cracking reaction chamber reaches 160-200°C, the induction heaters of the first extrusion device 16 and the second extrusion device 18 are simultaneously activated to heat the first screw barrel of the first extrusion device 16 respectively. g and the second screw q of the second extruding device 18, so that the temperature of the first screw g of the first extruding device 16 is from the feeding port d of the first extruding device to the discharging of the first extruding device 16. The mouth i gradually rises from 150 to 160 ° C to 250 to 260 ° C, and the temperature of the second screw barrel q of the second extrusion device 18 goes from the feed port o of the second extrusion device to the second extrusion device. The discharge port s of 18 gradually rises;

2) Then, start the fifth reducer H of the compression feeding device 15 to drive the stirring shaft D and the rectangular blades F and the helical blades K fixed on the stirring shaft D; then start each membrane cracking reaction chamber 14a, 14b respectively. , The third reducer J1 on the top of 14c drives the stirring 5a, 5b, 5c, so that the movable scale V rotates in each membrane cracking reaction chamber, and the rotation speed is 5 to 40 rpm; then the first extrusion device is started again. The first reducer a of 16 and the second reducer l of the second extrusion device 18 make the screw rotate in the screw barrel.

3) Add the waste plastic into the compression feeding device 15, and the waste plastic in the compression feeding device 15 is rotated under the action of the stirring shaft D, the rectangular blade F and the helical blade K fixed on the stirring shaft D, and the waste plastic is removed. Pressed into the feed port d of the first extrusion device 16, the waste plastic moves forward in the first screw barrel g at a certain speed under the action of rotating friction, and is continuously heated while moving forward. The water vapor and the air brought in during the feeding process are discharged at the exhaust port set in the first extrusion device 16 and processed by the absorption device. When the molten waste plastic is discharged from the discharge port i of the first extrusion device 16, it enters the connecting device 17 When the first connection port B3 is opened, the waste plastic is already in a paste-like state of hot melting, and the temperature reaches 250-260 ° C, and is continuously heated by the third heating element t3 in the connection device 17. At this time, the mixed content in the waste plastic The hydrogen chloride of the chlorine waste plastic PVC is decomposed, the generated hydrogen chloride is discharged from the exhaust hole at the top of the connecting device 17, and is pumped to the hydrogen chloride absorption treatment device. The feed port o of the second extrusion device 18 enters the second extrusion device 18 , and under the rotation of the second screw p, the paste in the hot-melt state moves forward in the second screw barrel g of the second extrusion device 18 Move, and continue to be heated, from 250 to 260 ° C to 350 to 365 ° C, under the action of the rotation of the second screw p of the second extrusion device 18, the waste plastic thermal paste is pressed to the first branch. Head 13, the molten waste plastic paste changes from rotary motion to linear motion due to the damping effect on the porous circular plate, is divided into three parts by the partition plate and the cone core, and is pressed into three discharge branches Z1 respectively. There are membrane cracking reaction chambers 14a, 14b, 14c, and the pressed waste plastic hot melt paste enters from the feed port at the top of the membrane cracking reaction chambers 14a, 14b, 14c and has been heated by the fourth heating elements λ, η, The membrane-type pyrolysis reaction chambers 14a, 14b, and 14c heated by α fall on the rotating distribution plate T. Under the action of centrifugal force, the waste plastic hot-melt paste is thrown to the cylinder body b1 of the membrane-type pyrolysis reaction chamber. , Under the action of gravity and the rotation of the movable scale V, it rotates and moves downward along the cylinder body b1. At the same time, the movable scale V rotates close to the cylinder body b1 under the action of centrifugal force, and the waste plastic hot melt paste flowing down Scrape into a film shape, move down gradually, and pass through the low temperature zone, the medium temperature zone and the high temperature zone in turn. Different plastics undergo thermal cracking reaction instantaneously in different temperature zones, and the generated oil and gas flows from the three membrane cracking reaction chambers 14a, 14b, 14c. It is discharged from the upper exhaust port, and enters the catalyst packing layers of the corresponding catalytic adsorption towers 4, 11, and 12 through the three first oil and gas transportation branch pipes Z2 for further catalytic cracking. The low-boiling point oil and gas of the short chain is generated down, and the low-boiling point oil and gas rises from the catalytic layer to the adsorption packing layer and is discharged from the top of the three catalytic adsorption towers 4, 11 and 12 after removing the organic chlorine, and through the three second oil and gas transport branch pipes Z3 respectively from the corresponding The three first condensations of The oil and gas inlets at the top of the condensers 1, 2, and 10 enter the first condensers 1, 2, and 10. After condensation, high-quality fuel oil and gas are obtained from the three oil and gas inlets N2, N3, and N4 of the receiving tank through the third oil and gas delivery branch pipe Z4. Entering the same receiving tank 3, the light fuel oil flows out from the bottom of the discharge port N6 of the receiving tank 3, and flows into the oil storage tank 28 through the fourth oil and gas delivery branch pipe Z5. The gas compressor 29 compresses into liquefied gas and enters the liquefied gas storage tank 30 for drying of waste plastics and other uses. The generated carbon black moves down to the bottom along the inner wall of the dewaxing furnace 20 under the action of the rotating scraper L3. The carbon black that reaches the bottom also contains a small amount of wax oil, and the carbon black is removed from the three films by the rotating discharge bottom scraper L4. The bottom material outlet of the cracking reaction chambers 14a, 14b, 14c is discharged, and respectively enters the same dewaxing furnace 20 in the lower part through three pneumatic combination valves 23, 24, 25 and three bottom telescopic tubes Z9, and the oil-containing carbon black powder is in the scraper L3. Under the action of the rotation, the wax-containing oil carbon black continuously moves from the center of the bottom of the tank to the cylinder wall and flips up along the cylinder wall, repeating the cycle. The oil vapor entering the catalyst layer of the catalytic flash tower 8 is also catalytically cracked into lower boiling point oil and gas, and the lower boiling point vapor rises from the catalytic layer to the adsorption packing layer to remove organic chlorine from the catalytic flash evaporation. The top of the tower 8 is discharged, and the high-quality base oil obtained after being condensed by the second condenser 6 directly enters the gas-liquid separation tank 7, and the liquid base oil is discharged from the bottom of the gas-liquid separation tank 7, and enters the oil storage tank 19 through the liquid sealing pipe Z7. It is discharged from the upper part of the gas-liquid separation tank, and is communicated with the gas main pipe through the tail gas branch pipe Z8. The reflux liquid in the catalytic flash tower 8 successively falls to the first umbrella-shaped cover C6 and the second umbrella-shaped cover of the catalytic flash tower 8. The cover C7 is then sprinkled on the cylindrical wall of the lower end C8 of the catalytic flash tower shell under the action of gravity to flash, and then rises to the catalytic layer of the catalytic flash tower 8 . Make sure to remove the high boilers of the waxy oil carbon black to obtain dry and loose carbon black powder. The dry carbon black powder is discharged from the discharge port at the bottom of the dewaxing furnace 20, and enters the carbon black cooler 22 through the combined valve 21. Under the combined action of the screw H9 of the cooler 22 and the inner wall of the third screw barrel H4, the hot carbon black powder is cooled in the water in the cooling water tank H6 during the forward movement process, and the cooled carbon black powder is removed from the carbon black collection box 26. The feed port T2 enters the carbon black collection box 26. The carbon black collection box 26 is composed of a box body T3, a box cover T1, a feed port T2, a nitrogen inlet T5, and a trolley T4. The carbon black collection box 26 must be used in advance. Nitrogen replacement and water cooling of the outer wall of the third screw barrel H4 of the carbon black cooler 22 can prevent the carbon black from self-igniting, so as not to affect the quality of the carbon black.

After different waste plastics are exhausted through the compression feeding hopper (compression feeding device), the exhaust extruder (the first extrusion device), and the exhaust tank (connecting device), the molten material passes through the multi-head press. The head (split head) is distributed into each membrane cracking reaction chamber, and the material is thrown to the inner wall of the chamber under the action of centrifugal force, and contacts with the high temperature cylinder wall, cracking occurs instantly, and the cracking steam is further processed by the corresponding catalytic adsorption tower. Catalysis and removal of organic chlorine, and then condensed by a condenser to obtain high-quality fuel oil and gas, and carbon black powder is discharged after being treated by a dewaxing furnace. The device of the utility model has a large processing capacity and is suitable for the cracking of polymers such as waste plastics and residual oil.

The cracking system of the utility model for realizing cracking of high polymers has strong adaptability, and can not only process waste plastics (PE, PP, PS), but also process high polymers such as waste oil and residual oil, and can also process high polymers containing waste plastics (PE, PP, PS). Chlorine-based polyvinyl chloride has the advantages of large processing capacity, fast reaction speed, effective conversion rate close to 100%, no carbon formation on the wall of the equipment, no secondary pollution, small footprint, and suitable for continuous production all year round. The scale can reach 8 to 30 tons/day, which overcomes the shortcomings of the current domestic and foreign waste plastic treatment equipment, such as long reaction period, low oil conversion rate, solid waste and waste water discharge, serious carbon deposition, and difficulty in cleaning, resulting in secondary pollution.

In this specification, the invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and changes can still be made without departing from the spirit and scope of the present invention. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense.

Claims (13)

1. a cracking system that realizes cracking high polymer, is characterized in that, described cracking system comprises pretreatment unit and cracking unit, and described pretreatment unit comprises compression feeder, the first extrusion device, the first Second extrusion device, the outlet of the compression feeding device is communicated with the inlet of the first extrusion device, and the outlet of the first extrusion device is connected to the second extrusion device. The feed ports of the two extrusion devices are connected through a connection, the cracking unit includes three or more membrane cracking reaction chambers, and the discharge port of the second extrusion device is connected to the cracking unit. Three or more than three membrane cracking reaction chambers are connected, and the first extrusion device and the second extrusion device are both provided with a first heating element. 2. the cracking system that realizes cracking high polymer according to claim 1 is characterized in that, the discharge port of the described first extrusion device is by the feed port of the connecting device and the described second extrusion device connected, the connecting device is provided with a cylindrical upper part and a conical lower part, the top end of the cylindrical upper part is provided with an exhaust port, the cylindrical upper part is provided with a first connection port, and the first The connection port is slidably and sealedly connected with the discharge port of the first extrusion device, the bottom end of the conical lower part is provided with a second connection port, and the second connection port is connected with the second connection port. The feed ports of the extrusion device are communicated with each other, the first extrusion device and/or the second extrusion device are provided with an exhaust port for discharging the waste gas generated by heating, and the conical lower part is provided with a heating flow paste for heating The third heating element of the polymer. 3. the cracking system that realizes cracking high polymer according to claim 1 is characterized in that, described first extrusion device comprises the first reducer, the first coupling, the first bearing housing and the first screw The first reducer, the first coupling, the first bearing box, the feed port of the first extrusion device, the first screw barrel and the discharge port of the first extrusion device are connected in sequence, so The second extrusion device includes a second reducer, a second coupling, a second bearing box and a second screw barrel, the second reducer, the second coupling, the second bearing box, the second The feed port of the extrusion device, the second screw cylinder and the discharge port of the second extrusion device are connected in sequence, and the first screw cylinder and the second screw cylinder are respectively provided with the first bearing box. The first screw and the second screw are connected with the second bearing housing, and the first screw barrel and the second screw barrel are both provided with exhaust holes. 4. the cracking system that realizes cracking high polymer according to claim 1 is characterized in that, described compression type feeding device comprises cylindrical upper cylinder and cylindrical lower cylinder, and described cylindrical upper cylinder The diameter of the body is larger than the diameter of the cylindrical lower body, the compression feeding device is provided with a stirring structure, and the stirring structure includes a stirring shaft and a combined blade, and the combined blade includes the same The rectangular blade corresponding to the cylindrical upper cylinder body and the helical blade corresponding to the cylindrical lower cylinder body. 5. the cracking system that realizes cracking high polymer according to claim 1, is characterized in that, the discharge port of described second extrusion device is by three or three in the split head and described cracking unit The above membrane cracking reaction chambers are communicated, and the split head includes a connecting elbow and a shell, and one end of the connecting elbow is communicated with the discharge port of the second extrusion device. The other end of the elbow is connected with the inlet end of the casing of the shunt head, the inlet end of the casing is provided with a perforated circular plate, and the interior of the casing is provided with a conical core and a surrounding The described baffle plate provided by the cone core, the described baffle plate divides the inner space of the described shell into compartments corresponding to the number of the described membrane cracking reaction chambers, and the outlet end of the described shell is provided with There are discharge ports corresponding to the number of the membrane cracking reaction chambers; the shell is provided with a second heating element. 6. the cracking system that realizes cracking high polymer according to claim 1 is characterized in that, described cracking unit also comprises oil and gas collecting device, and the number of described oil and gas collecting device is corresponding to described membrane cracking reaction the number of cavities, the oil and gas collection device also includes a first oil and gas delivery branch pipe connected with the membrane cracking reaction chamber, a catalytic adsorption tower connected with the outlet of the first oil and gas delivery branch pipe, and the The second oil and gas delivery branch pipe connected with the catalytic adsorption tower, the first condenser connected with the outlet of the second oil and gas delivery branch pipe, the third oil and gas delivery branch pipe connected with the first condenser, and the The receiving tank connected to the outlet of the third oil and gas delivery branch pipe, the air outlet of the membrane cracking reaction chamber is communicated with the air inlet at the bottom of the catalytic adsorption tower through the first oil and gas delivery branch pipe, and the catalytic adsorption tower The air outlet is communicated with the air inlet on the top of the first condenser through the second oil and gas delivery branch pipe, and the gas-liquid outlet on the top of the first condenser is connected with the gas-liquid inlet on the side of the receiving tank through the third oil and gas delivery branch pipe The air outlet at the top of the receiving tank is communicated with the combustion main pipe, and the condensate outlet at the bottom of the first condenser is communicated with the condensate main pipe. 7. the cracking system that realizes cracking high polymer according to claim 6, is characterized in that, described catalytic adsorption tower comprises upper end cap, first middle section, second middle section, lower end cap, upper grid, lower The grid, the upper end cover, the first middle section, the second middle section, and the lower end cover are sequentially connected to form a tower body from top to bottom, and the upper grid and the lower grid are sequentially connected from top to bottom. fixed in the tower. 8. the cracking system that realizes cracking high polymer according to claim 1, is characterized in that, described membrane type cracking reaction chamber comprises reaction chamber cylinder, the 3rd speed reducer, band scale stirring, described band scale The stirring includes a stirring shaft, a distribution plate, a lantern frame, and movable scales, the lantern frame is fixed on the stirring shaft, the movable scales are fixed on the lantern frame, and the movable scales can rotate freely; the The reaction chamber cylinder is formed from top to bottom by setting the fourth heating element to form the first temperature zone reaction chamber cylinder, the second temperature zone reaction chamber cylinder and the third temperature zone reaction chamber cylinder. 9. the cracking system that realizes cracking high polymer according to claim 6, is characterized in that, described cracking unit also comprises dewaxing furnace, is connected with the 5th oil and gas transport branch pipe of described dewaxing furnace, and is connected with all the dewaxing furnace. The catalytic flash tower connected with the outlet of the fifth oil and gas transport branch pipe, the sixth oil and gas transport branch pipe connected with the described catalytic flash tower, the second condenser connected with the outlet of the sixth oil and gas transport branch pipe , the gas-liquid separation tank connected with the lower outlet of the second condenser, the seventh liquid conveying branch pipe connected with the discharge port at the bottom of the gas-liquid separation tank, and the side of the gas-liquid separation tank The exhaust port is connected with the eighth gas conveying branch pipe and the telescopic pipe, the feed port of the dewaxing furnace is connected with the discharge port of the membrane cracking reaction chamber through the telescopic pipe, and the dewaxing furnace discharges The gas port is communicated with the inlet of the catalytic flash tower through the fifth oil and gas delivery branch pipe, and the gas outlet of the catalytic flash tower is communicated with the inlet of the second condenser through the sixth oil and gas delivery branch pipe, The bottom outlet of the second condenser is directly communicated with the upper air inlet of the gas-liquid separation tank, and the side exhaust port of the gas-liquid separation tank is communicated with the exhaust main pipe through the eighth gas delivery branch pipe ; The dewaxing furnace is provided with a fourth inductive heating element, and the catalytic flash tower is provided with a sixth heating element. 10. the cracking system that realizes cracking high polymer according to claim 9 is characterized in that, described dewaxing furnace comprises dewaxing furnace cylinder, the 4th speed reducer, scraper stirring, and described scraper stirring comprises main shaft , scraper rack, scraper, bottom scraper, bottom shaft, high temperature sliding bearing, the scraper rack is fixed on the main shaft, the scraper is suspended on the scraper rack, and the bottom scraper is installed at the bottom of the scraper rack. 11. the cracking system that realizes cracking high polymer according to claim 9 is characterized in that, the discharge port at the bottom of the described dewaxing furnace is connected with the feed port of the carbon black cooler, and the described carbon black The outlet of the cooler is connected with the carbon black collection box. The upper part of the carbon black collection box is provided with a nitrogen inlet. The carbon black cooler includes a fourth reducer, a third coupling, and a third bearing box. The third screw barrel is connected in sequence and fixed on the base through the bracket. The third screw barrel is equipped with a screw connected with the third coupling, and the outer wall of the third screw barrel is provided with a cooling water tank. 12. the cracking system that realizes cracking high polymer according to claim 9, is characterized in that, described catalytic flash tower comprises shell upper end, first shell middle section, second shell middle section, shell lower end, first grid , the second grid, the first umbrella cover, the second umbrella cover, the upper end of the outer casing, the middle end of the first outer casing, the middle end of the second outer casing, and the lower end of the outer casing in order from top to bottom Connected into a tower body, the lower end of the catalytic flash tower is provided with a sixth heating element, the first grid, the second grid, the first umbrella cover and the second umbrella The cover is sequentially fixed in the tower body from top to bottom. 13. the cracking system that realizes cracking high polymer according to claim 11 is characterized in that, described compression feeding device, described first extrusion device, described second extrusion device, installation On the platform higher than the membrane cracking reaction chamber, the receiving tank, the first condenser, the catalytic adsorption tower, the membrane cracking reaction chamber, the second The condenser, the catalytic flash tower, the gas-liquid separation tank, the dewaxing furnace, and the carbon black cooler are sequentially assembled on the same skid support from top to bottom.

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