CN116371303A - Cold polymerization petroleum resin production system and method - Google Patents
Cold polymerization petroleum resin production system and method Download PDFInfo
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- CN116371303A CN116371303A CN202310611724.9A CN202310611724A CN116371303A CN 116371303 A CN116371303 A CN 116371303A CN 202310611724 A CN202310611724 A CN 202310611724A CN 116371303 A CN116371303 A CN 116371303A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 104
- 238000000926 separation method Methods 0.000 claims abstract description 98
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 75
- 239000002994 raw material Substances 0.000 claims abstract description 60
- 239000003054 catalyst Substances 0.000 claims abstract description 57
- 239000011347 resin Substances 0.000 claims abstract description 50
- 229920005989 resin Polymers 0.000 claims abstract description 50
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 48
- 239000003208 petroleum Substances 0.000 claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- 239000003513 alkali Substances 0.000 claims description 24
- 239000002351 wastewater Substances 0.000 claims description 13
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical group FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 8
- 229910015900 BF3 Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims 8
- 238000000034 method Methods 0.000 abstract description 14
- 238000009826 distribution Methods 0.000 abstract description 13
- 239000000047 product Substances 0.000 description 51
- 238000004945 emulsification Methods 0.000 description 23
- 230000000694 effects Effects 0.000 description 9
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010538 cationic polymerization reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F240/00—Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/41—Emulsifying
- B01F23/4105—Methods of emulsifying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/60—Pump mixers, i.e. mixing within a pump
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- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/085—Feeding reactive fluids
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- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
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- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
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- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
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Abstract
The invention relates to the technical field of petrochemical industry and provides a system and a method for producing cold polymerization petroleum resin. The production system comprises a reaction pipeline for realizing material transmission and completing polymerization reaction in the transmission process, wherein the front end of the reaction pipeline is respectively connected with a raw material and a catalyst supply device, the rear end of the reaction pipeline is connected with a polymerization product separation device, the system further comprises a first homogenizing emulsifying pump which is arranged corresponding to the reaction pipeline and is used for mixing materials in the reaction pipeline and providing power for material transmission, after the system is started, the raw material and the catalyst are respectively injected into the reaction pipeline according to a preset proportion by the raw material and the catalyst supply device, the raw material and the catalyst are fully mixed by the first homogenizing emulsifying pump and polymerized in the reaction pipeline, and the polymerized product enters the polymerization product separation device for separation. The invention uses the material conveying pipeline of the heat exchange device as a reaction place, and the raw materials are conveyed and polymerized in the conveying process, so that the process is simplified, the molecular weight of the product is more concentrated, and the molecular weight distribution width of the product is reduced.
Description
Technical Field
The invention relates to the technical field of petrochemical industry, in particular to a cold polymerization petroleum resin production system and method.
Background
The existing petroleum resin production process is that raw materials are dehydrated and then polymerized in a two-stage polymerization kettle, the polymerization process of the raw materials is carried out in the polymerization kettle, a large amount of polymerization heat is discharged during polymerization, and the two-stage polymerization kettles are respectively provided with an extracorporeal circulation cooling heat exchanger to withdraw the polymerization heat. The polymerized liquid is subjected to three-stage water washing to remove the catalyst, and finally enters a second-stage flash evaporation to remove the solvent, so that molten petroleum resin is obtained, the conventional petroleum resin production device has complex process, high investment cost and wider molecular weight distribution of the product, and the downstream application of part is affected. Therefore, there is an urgent need to develop a novel system and method for producing a cold polymerized petroleum resin in view of the above problems.
Disclosure of Invention
The invention provides a system and a method for producing cold polymerization petroleum resin, and the specific implementation modes are as follows:
the system comprises a reaction pipeline for realizing material transmission and finishing polymerization reaction in the transmission process, wherein the front end of the reaction pipeline is respectively connected with a raw material and a catalyst supply device, the rear end of the reaction pipeline is connected with a polymerization product separation device, the system further comprises a first homogenizing emulsifying pump which is arranged corresponding to the reaction pipeline and is used for mixing materials in the reaction pipeline and providing power for material transmission, after the system is started, the raw material and the catalyst are respectively injected into the reaction pipeline according to a preset proportion by the raw material and the catalyst supply device, the raw material and the catalyst are fully mixed by the first homogenizing emulsifying pump, are polymerized in the reaction pipeline and are transmitted along the reaction pipeline, and the polymerized products enter the polymerization product separation device to realize separation.
Further, a heat exchange device for realizing heat exchange between the inside and the outside of the reaction pipeline is arranged corresponding to the reaction pipeline.
Further, an outlet of the first homogenizing emulsifying pump is connected with a heat exchange device, a material conveying pipeline in the heat exchange device is a reaction pipeline, and a heat exchange medium channel of the heat exchange device is arranged outside the material conveying pipeline.
Further, a heat exchange medium inlet of the heat exchange device is arranged corresponding to the inlet of the reaction pipeline, and a heat exchange medium outlet is arranged corresponding to the outlet of the reaction pipeline.
Furthermore, the reaction pipeline is an S-shaped pipeline, and spiral sheets are arranged in the S-shaped pipeline.
Further, the screw pitch of the spiral sheet is 20-40mm, the pipe diameter of the reaction pipeline is 20-40mm, and the power of the first homogenizing emulsification pump is 8-12kw; the flow rate of the raw materials is 1-3 m/s, and the flow rate of the catalyst is 1-3 m/s.
Further, the system also comprises an alkali liquor supply device, wherein an alkali liquor conveying pipeline is connected to the connecting pipeline between the reaction pipeline and the polymerization product separation device, and the inlet of the alkali liquor conveying pipeline is connected to the outlet of the alkali liquor supply device.
Further, the polymerization product separation equipment is provided with two groups, and a first group of polymerization product separation equipment for oil-water separation and a second group of polymerization product separation equipment for dehydration separation are arranged in series.
Further, the first group of polymerization product separating equipment comprises a second homogenizing emulsifying pump and a first-stage separating tank, the second homogenizing emulsifying pump is connected with the first-stage separating tank in series, the outlet of the second homogenizing emulsifying pump is connected with the inlet of the first-stage separating tank, the inlet of the second homogenizing emulsifying pump is connected with the outlet of the reaction pipeline, the second group of polymerization product separating equipment comprises a third homogenizing emulsifying pump and a second-stage separating tank, the third homogenizing emulsifying pump is connected with the second-stage separating tank in series, the outlet of the third homogenizing emulsifying pump is connected with the inlet of the second-stage separating tank, and the inlet of the third homogenizing emulsifying pump is connected with the discharge port of the first-stage separating tank.
Further, the system also comprises a demulsifier and water supply device, and a demulsifier and water conveying pipeline is connected to the connecting pipeline between the two groups of polymer product separation devices, and the inlet of the demulsifier and water conveying pipeline is connected to the outlet of the demulsifier and water supply device.
Further, the primary separation tank and the secondary separation tank are also respectively provided with a primary separation tank waste water outlet and a secondary separation tank waste water outlet, and waste water separated by the primary separation tank and the secondary separation tank flows to the second homogenizing emulsifying pump and the third homogenizing emulsifying pump for reuse from the primary separation tank waste water outlet and the secondary separation tank waste water outlet through pipelines.
Further, the system also comprises a flash evaporation granulating device, and the discharge port of the secondary separation tank is connected with the inlet of the flash evaporation granulating device through a pipeline.
In addition, the invention also provides a production method of the cold polymerization petroleum resin, which comprises the following steps: after the system is started, the raw materials and the catalyst are respectively injected into the reaction pipeline according to the preset proportion by the raw materials and the catalyst supply equipment, are fully mixed by the first homogenizing emulsifying pump and are transmitted in the reaction pipeline while being polymerized, and the polymerized products enter the polymerized product separation equipment to realize separation.
And (3) carrying out oil-water separation and dehydration separation on the polymerized product.
The raw material is a resin material produced by cracking carbon nine or naphthalene fraction; the catalyst is boron trifluoride.
By adopting the technical scheme, the invention has the beneficial technical effects that:
1. the invention uses the material conveying pipeline of the heat exchange device as a reaction place, the raw materials are conveyed and reacted in the conveying process, the whole process is simplified, the molecular weight of the prepared product is more concentrated, and the molecular weight distribution width of the product is reduced.
2. Compared with the prior art, the invention also adopts a homogenizing emulsifying pump, so that the materials which are mutually insoluble are uniformly and finely dispersed and emulsified in a short time.
3. The invention does not need to design a two-stage polymerization kettle and a heat exchanger outside the reaction kettle, has low equipment cost, simple device operation and improved working efficiency.
Drawings
FIG. 1 is a schematic diagram of a system for producing a cold polymerized petroleum resin;
FIG. 2 is a schematic view of the structure of a screw flight of a cold polymerization petroleum resin production system;
FIG. 3 is a graph showing the molecular weight distribution of petroleum resin produced by a cold polymerization petroleum resin production system.
Reference numerals illustrate:
1. raw material supply equipment 2, catalyst supply equipment 3, a first homogenizing emulsification pump 4, a heat exchange device 5, alkali liquor supply equipment 6, a second homogenizing emulsification pump 7, a first-stage separation tank 8, a third homogenizing emulsification pump 9, a second-stage separation tank 10, a flash evaporation granulation device 11, demulsifier and water supply equipment 12, a washing water circulation pump 41, a reaction pipeline 42, a reaction pipeline inlet 43, a reaction pipeline outlet 44, a heat exchange medium inlet 45 and a heat exchange medium outlet.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment 1, referring to fig. 1, a cold polymerization petroleum resin production system, the system includes a reaction pipeline 41 for realizing material transfer and completing polymerization reaction in the transfer process, the front end of the reaction pipeline 41 is respectively connected with a raw material supply device 1 and a catalyst supply device 2, the rear end of the reaction pipeline 41 is connected with a polymerization product separation device, wherein, the system further includes a first homogeneous emulsification pump 3 which is arranged corresponding to the reaction pipeline and is used for mixing materials in the reaction pipeline 41 and providing power for material transfer, after the system is started, the raw material supply device 1 and the catalyst supply device 2 respectively inject raw materials and catalysts into the reaction pipeline 41 according to a preset proportion, the raw materials and the catalysts are polymerized in the reaction pipeline 41 after being fully mixed by the first homogeneous emulsification pump 3 and are transferred along the reaction pipeline, and products after polymerization enter the polymerization product separation device to realize separation. The petroleum resin synthesis belongs to cationic polymerization, the reaction pipeline 41 is used as a reaction place, raw materials are conveyed and reacted in the conveying process, the raw materials are not required to be fixed in a reaction kettle for waiting for polymerization and then are subjected to the next step, the whole process is simplified, the molecular weight of the prepared product is more concentrated, and the molecular weight distribution width of the product is reduced. In addition, the invention also adopts a homogenizing emulsifying pump, the homogenizing emulsifying pump mixes mutually insoluble raw materials, and the high tangential speed generated by the high-speed rotation of the homogenizing emulsifying pump rotor in the working process and the strong kinetic energy caused by the high-frequency mechanical effect can ensure that the mutually insoluble solid materials, liquid materials and the most insoluble gas materials are uniformly and finely dispersed and emulsified in a short time under the combined action of the corresponding maturation process and a proper amount of additives.
In the system for producing a cold polymerized petroleum resin of this embodiment, a heat exchange device for realizing heat exchange between the inside and outside of the reaction tube is provided corresponding to the reaction tube. The raw materials and the catalyst release a large amount of heat while carrying out reaction in the reaction pipeline, so that a corresponding heat exchange device is arranged corresponding to the reaction pipeline, and the heat exchange device absorbs the heat generated in the reaction process in time. Further, an outlet of the first homogenizing emulsification pump 3 is connected with a heat exchange device 4, a material conveying pipeline in the heat exchange device 4 is a reaction pipeline 41, and a heat exchange medium channel of the heat exchange device is arranged outside the material conveying pipeline. Firstly, the first homogenizing and emulsifying pump 3 is positioned at the inlet end of the heat exchange device, raw materials and a catalyst are fully and uniformly mixed and then enter the reaction pipeline 41, the polymerization effect is optimal, the raw materials are fully polymerized, and the molecular weight of the product is more concentrated; secondly, creatively takes the material conveying pipeline in the heat exchange device 4 as the reaction pipeline 41, fully utilizes the characteristics of the heat exchange device 4, such as the material conveying pipeline and the heat exchange medium channel, realizes the multiple utilization of the heat exchange device 4, ensures the polymerization of the raw materials and the catalyst in the reaction pipeline, and fully exchanges heat generated by the polymerization in time. Specifically, the heat exchange medium of the heat exchange device can be selected as water, and the water is used as the heat exchange medium, so that the cost is saved and the heat can be quickly absorbed.
In the cold polymerization petroleum resin production system of this embodiment, the heat exchange medium inlet 44 of the heat exchange device 4 is disposed corresponding to the reaction pipeline inlet 42, the heat exchange medium outlet 45 is disposed corresponding to the reaction pipeline outlet 43, the temperature of the heat exchange medium at the heat exchange medium inlet 44 is lowest, and the heat exchange medium absorbs heat along with the flowing in the heat exchange medium pipeline, the temperature of the heat exchange medium at the heat exchange medium outlet 45 is highest, the heat exchange medium inlet 44 and the reaction pipeline inlet 42 are located on the same side of the heat exchange device 4, so that the heat generated by the raw materials and the catalyst entering from the reaction pipeline inlet 42 in the polymerization process is timely absorbed by the heat exchange medium entering the heat exchange device 4 at the beginning.
In the cold polymerization petroleum resin production system of this embodiment, referring to fig. 1, the reaction pipeline 41 is an S-shaped pipeline, the design of the S-shaped pipeline is equivalent to the increase of the reaction path, further, the inside of the reaction pipeline is provided with spiral sheets, the structure of the spiral sheets is as shown in fig. 2, the screw pitch of the spiral sheets is 20 to 40mm, the raw materials and the catalyst become the effect of approximate turbulence in the pipeline from the layer after passing through the spiral sheets in the conveying process, the mixing heat exchange effect is increased, when the screw pitch of the spiral sheets is greater than 40mm, the heat exchange effect of the raw materials and the catalyst in the reaction pipeline is reduced, when the screw pitch of the spiral sheets is less than 20mm, the inside of the pipeline forms larger resistance, and the flow velocity of the raw materials and the catalyst in the reaction pipeline is greatly reduced. Further, the spiral sheets can be placed at intervals of one meter in the reaction pipeline.
In the cold polymerization petroleum resin production system of the embodiment, the pipe diameter of the reaction pipeline is 20-40mm, the power of the first homogenizing and emulsifying pump 3 is 8-12kw, the flow rate of raw materials is 1-3 m/s, and the flow rate of the catalyst is 1-3 m/s. The pipe diameter of the reaction pipe can also influence the heat exchange effect of the raw materials and the catalyst in the reaction pipe. The power of the first homogenizing emulsification pump 3 was adjusted according to the characteristics of the raw material and the catalyst and the addition amount, and when the power of the first homogenizing emulsification pump was 12kw, the raw material and the catalyst were finely dispersed and emulsified in a short time. The pipe diameter of the reaction pipe, the power of the first homogenizing emulsification pump 3 and the flow rate of the raw materials and the catalyst are tested, and the optimal effect is achieved by mutual cooperation in the scope of the invention.
The first homogeneous emulsifying pump 3 finely disperses the raw material and the catalyst, which are not soluble in each other in a normal case. The high tangential speed generated by the high-speed rotation of the rotor in the production process and the strong kinetic energy caused by the high-frequency mechanical effect enable the materials which are not compatible to each other to be uniformly and finely dispersed and emulsified in a short time, and finally the stable high-quality product required by us is obtained.
Specifically, when the pipe diameter of the reaction pipeline is 30mm, the power of the first homogenizing emulsification pump is 10kw; when the flow rates of the raw materials and the catalyst are respectively 2 m/s, the optimal reaction state is achieved, and all the devices cooperate under the condition, so that the raw materials and the catalyst are dispersed and emulsified and then are polymerized in a reaction pipeline and are conveyed along the reaction pipeline, and the molecular weight distribution width of the finally prepared petroleum resin is 1.4-1.7.
In the system for producing a cold polymerized petroleum resin of the present embodiment, the system further comprises an alkali liquid supply device 5, and an alkali liquid conveying pipeline is connected to the connecting pipeline between the reaction pipeline 41 and the polymerization product separation device, and the inlet of the alkali liquid conveying pipeline is connected to the outlet of the alkali liquid supply device 5. The raw materials take place the polymerization under the catalytic action of catalyst, need to get rid of the catalyst after the polymerization, the catalyst removal belongs to acid-base neutralization reaction, therefore, this system has still set up alkali lye supply equipment 5, alkali lye supply equipment 5 sets up between reaction tube 41 and polymerization product separation equipment, after the reaction obtains the product and comes out from reaction tube export 43, alkali lye supply equipment 5 mixes alkali lye and reaction product through alkali lye transfer line, alkali lye and reaction product's catalyst are carried to polymerization product separation equipment while reacting.
In the cold polymerization petroleum resin production system of this embodiment, the polymerization product separation apparatuses are provided in two groups, and the first group of polymerization product separation apparatuses and the second group of polymerization product separation apparatuses are disposed in series. The first group of polymerization product separation equipment mainly performs oil-water separation, and the second group of polymerization product separation equipment mainly performs dehydration separation. In the cold polymerization petroleum resin production system of the present embodiment, the first group of polymerization product separation apparatuses includes a second homogenizing emulsification pump 6 and a first separation tank 7, the second homogenizing emulsification pump 6 and the first separation tank 7 are connected in series, an outlet of the second homogenizing emulsification pump 6 is connected with an inlet of the first separation tank 7, an inlet of the second homogenizing emulsification pump 6 is connected with a reaction pipe outlet 43, the second group of polymerization product separation apparatuses includes a third homogenizing emulsification pump 8 and a second separation tank 9, the third homogenizing emulsification pump 8 and the second separation tank 9 are connected in series, an outlet of the third homogenizing emulsification pump 8 is connected with an inlet of the second separation tank 9, and an inlet of the third homogenizing emulsification pump 8 is connected with a discharge port of the first separation tank 7. The reaction product and alkali liquor are mixed and then conveyed to a second homogenizing and emulsifying pump 6 for homogenizing and emulsifying, and then enter a first-stage separating tank 7 from the outlet of the second homogenizing and emulsifying pump 6 for oil-water separation; the discharge port of the first-stage separation tank 7 is connected with the inlet of a third homogenizing and emulsifying pump 8 through a pipeline, and the third homogenizing and emulsifying pump 8 is connected with the second-stage separation tank 9 in series.
In the system for producing cold polymerized petroleum resin of the embodiment, the system further comprises a demulsifier and water supply device 11, a pipeline for conveying demulsifier and water is connected to a connecting pipeline between the two groups of polymerized product separation devices, the demulsifier and water supply device 11 is positioned between the first-stage separation tank 7 and the third homogenizing emulsification pump 8, an inlet of the demulsifier and water conveying pipeline is connected to an outlet of the demulsifier and water supply device 11, the demulsifier and water supply device 11 is mixed with a product obtained by oil-water separation from the first-stage separation tank 7 through a pipeline, and the product is conveyed into the third homogenizing emulsification pump 8 to be homogenized and emulsified and then conveyed into the second-stage separation tank 9 to be dehydrated and separated.
In the cold polymerization petroleum resin production system of the present embodiment, the primary separation tank 7 and the secondary separation tank 9 are further provided with a primary separation tank waste water outlet and a secondary separation tank waste water outlet, respectively, and waste water separated by the primary separation tank 7 and the secondary separation tank 9 flows from the primary separation tank waste water outlet and the secondary separation tank waste water outlet to the second homogenizing emulsification pump 6 and the third homogenizing emulsification pump 8 through pipelines for reuse, and the design reduces cost while saving water sources.
In the system for producing the cold polymerized petroleum resin of the embodiment, the system further comprises a flash granulating device 10, and the discharge port of the secondary separating tank 9 is connected with the inlet of the flash granulating device 10 through a pipeline. The polymerization product is separated by a polymerization product separation device and then is further removed from the solvent by a flash vaporization granulating device 10, so as to obtain the molten petroleum resin. In the cold polymerization petroleum resin production system of the embodiment, the raw material is a resin material produced by cracking a carbon nine or naphthalene fraction; the catalyst is boron trifluoride.
According to the petroleum resin production system, the production flow of the cold petroleum resin is specifically as follows: after the system is started, the raw material supply equipment 1 and the catalyst supply equipment 2 respectively fully mix resin materials and boron trifluoride catalyst produced by cracking carbon nine of the raw materials according to a preset proportion through a pipeline, the mixture passes through the first homogenizing and emulsifying pump 3, then enters the inlet 42 of the reaction pipeline from the outlet of the first homogenizing and emulsifying pump 3, then the raw materials are polymerized in the process of flowing through an S-shaped pipeline provided with spiral sheets in the pipeline, and heat produced by polymerization is absorbed by a heat exchange medium in a heat exchange medium channel. The polymerization product and catalyst produced by raw material polymerization flow out from the outlet 43 of the reaction pipeline, at this time, alkali liquor is mixed with the polymerization product and catalyst by the alkali liquor supply device 5 through the alkali liquor conveying pipeline and enters the inlet of the second homogenizing and emulsifying pump 6 together for homogenizing and emulsifying, the product after homogenizing and emulsifying enters the first-stage separating tank 7 from the inlet of the first-stage separating tank 7 for oil-water separation, the product after oil-water separation flows out from the outlet of the first-stage separating tank 7, at this time, the demulsifier and water supply device 11 mixes the demulsifier and the product after oil-water separation through the conveying pipeline and enters the third homogenizing and emulsifying pump 8 for homogenizing and emulsifying, the product flowing out from the outlet of the third homogenizing and emulsifying pump 8 enters the second-stage separating tank 9 for dehydrating and separating, and finally the solvent is removed from the outlet of the second-stage separating tank 9 into the flash evaporation and granulating device 10 to obtain molten petroleum resin, wherein the water produced by the separation of the first-stage separating tank 7 and the second-stage separating tank 9 is conveyed into the pipeline at the front ends of the inlet of the second homogenizing and emulsifying pump 6 and the third homogenizing and emulsifying pump 8 through the washing water circulation pump 12 to provide the required water source.
According to the cold polymerization petroleum resin production system, the cold polymerization petroleum resin production method comprises the following steps:
s1, homogenizing and emulsifying raw materials and a catalyst according to a preset proportion, and conveying the raw materials and the catalyst in a reaction pipeline 41 while polymerizing the raw materials and the catalyst in the reaction pipeline 41;
s2, homogenizing and emulsifying the polymerized product, the catalyst, alkali liquor and washing water, and then separating oil from water;
s3, homogenizing and emulsifying the oil-water separated product, demulsifier and water, and then dehydrating and separating;
s4, carrying out flash evaporation granulation on the dehydrated and separated product to obtain petroleum resin.
Further, after the system is started, the raw material supply device 1 and the catalyst supply device 2 respectively fully mix the raw material and the catalyst according to a preset proportion through the first homogenizing and emulsifying pump 3, then inject the mixture into the reaction pipeline 41, polymerize in the reaction pipeline 41, and the polymerized product enters the polymerization product separation device for separation.
The heat exchange device 4 for realizing the heat exchange between the inside and the outside of the reaction pipeline is arranged corresponding to the reaction pipeline 41, the material conveying pipeline in the heat exchange device is the reaction pipeline, and the heat exchange medium channel outside the material conveying pipeline is the heat exchange device.
The molecular weight distribution test of the petroleum resin prepared by the cold polymerization petroleum resin production system and the cold polymerization petroleum resin production method is carried out by taking the resin material produced by naphthalene fraction as a raw material and boron trifluoride as a catalyst, and as shown in fig. 3 and table 1, the molecular weight is more concentrated, and the molecular weight distribution width of the product is reduced. The number average molecular weight was 9.3495E2, the weight average molecular weight was 1.4318E3, and the molecular weight distribution width=weight average molecular weight/number average molecular weight, and the molecular weight distribution width was 1.5. Wherein the number average molecular weight is defined as: in the molecular weight distribution, the number weighted average of all molecular weights reflects the number structure of the molecular weight distribution, but does not reflect the weight structure of the molecular weight distribution. The physical meaning of the number average molecular weight is the sum of the fractions of the molecules of the respective different molecular weights multiplied by their corresponding molecular weights. The physical meaning of the weight average molecular weight is the sum of the weight fraction of each molecule of different molecular weight multiplied by the molecular weight corresponding thereto. The Z-average molecular weight is the molecular weight that is statistically averaged according to the Z value.
TABLE 1 molecular weight of Petroleum resins
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (14)
1. The system is characterized by comprising a reaction pipeline for realizing material transmission and finishing polymerization reaction in the transmission process, wherein the front end of the reaction pipeline is respectively connected with a raw material and a catalyst supply device, the rear end of the reaction pipeline is connected with a polymerization product separation device, the system further comprises a first homogenizing emulsifying pump which is arranged corresponding to the reaction pipeline and is used for mixing materials in the reaction pipeline and providing power for material transmission, after the system is started, the raw material and the catalyst are respectively injected into the reaction pipeline according to a preset proportion by the raw material and the catalyst supply device, the raw material and the catalyst are fully mixed by the first homogenizing emulsifying pump, are polymerized in the reaction pipeline and are transmitted along the reaction pipeline, and polymerized products enter the polymerization product separation device to realize separation.
2. The system according to claim 1, wherein a heat exchanger for exchanging heat between the inside and the outside of the reaction tube is provided corresponding to the reaction tube.
3. The system of claim 2, wherein the outlet of the first homogenizing emulsifying pump is connected to a heat exchange device, a material conveying pipeline in the heat exchange device is a reaction pipeline, and a heat exchange medium channel of the heat exchange device is arranged outside the material conveying pipeline.
4. The system of claim 2, wherein the heat exchange medium inlet of the heat exchange device is disposed corresponding to the inlet of the reaction tube, and the heat exchange medium outlet of the heat exchange device is disposed corresponding to the outlet of the reaction tube.
5. The system of claim 1, wherein the reaction tube is an S-shaped tube with a spiral sheet disposed therein.
6. A cold polymerization petroleum resin production system according to claim 5, wherein the pitch of said screw flight is 20 to 40mm; the pipe diameter of the reaction pipeline is 20-40mm, and the power of the first homogenizing emulsifying pump is 8-12kw; the flow rate of the raw materials is 1-3 m/s, and the flow rate of the catalyst is 1-3 m/s.
7. A system for producing cold polymerized petroleum resin according to claim 1, wherein the system further comprises an alkali liquid supply device, an alkali liquid conveying pipeline is connected to the connecting pipeline between the reaction pipeline and the polymerization product separation device, and the inlet of the alkali liquid conveying pipeline is connected to the outlet of the alkali liquid supply device.
8. A cold polymerized petroleum resin production system according to claim 1, wherein said polymerization product separation apparatuses are provided in two groups, a first group of polymerization product separation apparatuses for oil-water separation and a second group of polymerization product separation apparatuses for dehydration separation are disposed in series.
9. The system of claim 8, wherein the first set of polymer product separation devices comprises a second homogenized emulsion pump and a first separation tank, the second homogenized emulsion pump and the first separation tank are connected in series, an outlet of the second homogenized emulsion pump is connected with an inlet of the first separation tank, an inlet of the second homogenized emulsion pump is connected with an outlet of the reaction pipeline, the second set of polymer product separation devices comprises a third homogenized emulsion pump and a second separation tank, the third homogenized emulsion pump and the second separation tank are connected in series, an outlet of the third homogenized emulsion pump is connected with an inlet of the second separation tank, and an inlet of the third homogenized emulsion pump is connected with a discharge port of the first separation tank.
10. The system of claim 8, further comprising a demulsifier and water supply facility, wherein a demulsifier and water transport line is connected to the connection between the two sets of polymer product separation facilities, and wherein an inlet of the demulsifier and water transport line is connected to an outlet of the demulsifier and water supply facility.
11. The system according to claim 9, wherein the primary and secondary separation tanks are further provided with a primary and secondary separation tank waste water outlet, respectively, and waste water separated from the primary and secondary separation tanks flows from the primary and secondary separation tank waste water outlets to the second and third homogenizing and emulsifying pumps through pipelines for reuse.
12. The system for producing cold polymerized petroleum resin according to claim 9, further comprising a flash granulating device, wherein the discharge port of the secondary separating tank is connected with the inlet of the flash granulating device through a pipeline.
13. A method for producing a cold polymerized petroleum resin using the cold polymerized petroleum resin production system according to any one of claims 1 to 12, characterized in that the production method comprises: after the system is started, the raw materials and the catalyst are respectively injected into the reaction pipeline according to the preset proportion by the raw materials and the catalyst supply equipment, are fully mixed by the first homogenizing emulsifying pump and are transmitted in the reaction pipeline while being polymerized, and the polymerized products enter the polymerized product separation equipment to realize separation.
14. The method for producing a cold polymerized petroleum resin according to claim 13, wherein said raw material is a resin material produced by cracking a carbon nine or naphthalene fraction; the catalyst is boron trifluoride.
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