CN113308262A - Adding device and method for coking by blending tar residue with coal - Google Patents
Adding device and method for coking by blending tar residue with coal Download PDFInfo
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- CN113308262A CN113308262A CN202010119895.6A CN202010119895A CN113308262A CN 113308262 A CN113308262 A CN 113308262A CN 202010119895 A CN202010119895 A CN 202010119895A CN 113308262 A CN113308262 A CN 113308262A
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- 239000011273 tar residue Substances 0.000 title claims abstract description 150
- 239000003245 coal Substances 0.000 title claims abstract description 147
- 238000004939 coking Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002156 mixing Methods 0.000 title claims abstract description 29
- 238000009826 distribution Methods 0.000 claims abstract description 61
- 239000000463 material Substances 0.000 claims description 42
- 239000011269 tar Substances 0.000 claims description 25
- 239000002893 slag Substances 0.000 claims description 15
- 230000001960 triggered effect Effects 0.000 claims description 14
- 238000004321 preservation Methods 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000013049 sediment Substances 0.000 description 9
- 239000004744 fabric Substances 0.000 description 8
- 239000000571 coke Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B31/00—Charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B45/00—Other details
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses a tar residue coal blending coking adding device and a method thereof, wherein the device comprises an electric cut-off valve (1), a feeding pipe (2), a circulating pipe (3), a nozzle (4), a distributing pipe (5) and a conveying pump (6); the circulating pipe is arranged above the coal tower chamber (7) and surrounds the periphery of the rotary distribution trolley (8), the feeding pipe is connected with the tar residue collecting tank (10) through a conveying pump, and the feeding pipe is communicated with the circulating pipe; a plurality of distribution pipes are communicated with the circulating pipe, penetrate through the coal tower chamber and are installed with nozzles; a plurality of electric cut-off valves interlocked with the rotary distributing trolley are arranged on a plurality of distributing pipes. The method can completely treat the tar residues in the coking production, avoid the pollution to the environment in the conveying and adding processes of the tar residues, reduce the complicated operation processes of lifting, dumping and the like, realize the recycling and utilization efficiency of production wastes, ensure the cleanness in the coking production process and improve the economic and social benefits of the coking unit.
Description
Technical Field
The invention relates to tar residue treatment equipment and a method thereof, in particular to an adding device and a method for coking by blending tar residue with coal.
Background
The tar residue has pungent smell, is toxic and difficult to degrade, can seriously pollute the environment when being directly discharged, is a better coking additive because the tar residue consists of hydrocarbons with high density, and at present, the tar residue is generally mixed into coking coal for coking in an industrial treatment and utilization method, which is not only beneficial to improving the quality of coke such as the lump size and the strength of the coke, but also increases the caking property of charging coal and solves the pollution problem of the tar residue.
The tar residue treatment steps in the prior art are as follows: the method comprises the following steps of lifting and dumping tar residues in a tar residue collecting tank into a tar residue box by a single-bucket lifting and stretching machine through a forklift for the tar residues from the tar residue clarifying tank, then discharging the tar residues onto a screw conveyor by controlling the opening degree of a flat valve through manual operation, directly dropping the tar residues on a coal conveying belt machine, and carrying out post-treatment and then feeding the tar residues to a coal tower. With the gradual tightening of the national environmental protection standards and requirements, the tar residue treatment device and the method thereof have the following defects in long-term production:
1. the tar residues are mainly conveyed to the tar residue adding device through a forklift, and the inevitable dripping and leakage phenomenon occurs in the transportation process, so that the road surface pollution is caused; and the peculiar smell along the line is obvious during transportation, which brings serious environmental problems.
2. The manual operation equipment is more, and the labor intensity is high. The tar residue transport box needs to be lifted by a single bucket elevator by 10m to pour the tar residue into a tar residue groove for treatment, steam cleaning pipes need to be arranged in the tar residue groove and the screw conveyor, and the interior of the tar residue transport box needs to be heated and cleaned by steam frequently after being used in winter. The opening degree of the flat valve is controlled by manual operation, so that the discharging amount of the tar residue is difficult to be matched with the conveying capacity of the spiral conveyor, the phenomenon of overflowing of a large amount of tar residue is often caused, the adding precision is poor, and the coking is not facilitated; meanwhile, the overflowed tar residues are difficult to clean, and have great influence on equipment and field environment.
3. Because the property change of the tar residue is large, most of the tar residue is sometimes water, and the tar residue is sometimes very viscous. The tar residue becomes liquid asphalt substance after hot water circulating system heats in the tar residue groove, and the stickness is big, and corrosivity is strong, adheres to on the equipment surface easily when gate, screw conveyer and electronic pipe clamp valve, and when the system was out of work again can cool off and solidify on equipment, both had been difficult to clear away, again can corrode equipment.
4. The tar slag is directly added on a belt conveyor for conveying coal, is only added on the surface of the coal and cannot be completely mixed with the coal, so that the phenomenon of adhesion of a coal slag mixture or formed coal to a belt exists, if the tar slag contains too much water, the adhesion of the coal slag mixture on the belt conveyor is aggravated, and the secondary pollution condition also exists in the conveying process.
The Chinese patent application CN200910030577.6 discloses a method and a device for coking tar residue blended coal, wherein the tar residue is conveyed to a sealed feeding tower through a tar residue tank, is heated by steam for heat preservation and conveyed, is conveyed through a screw feeder, and is accurately added into the blended coal through the interlocking control of a screw feeding electric valve and the operation of a belt. The device needs to transport tar dregs through the tar dregs jar, can't avoid the tar dregs to promote and empty inconvenience and leak and the smell polluted environment's problem.
Disclosure of Invention
The invention aims to provide an adding device for coking by blending tar residue and coal, which is directly arranged on a coal tower of a coke oven, replaces lifting and dumping operations by a delivery pump, and avoids the problem of solidification and adhesion of the tar residue through circulating flow.
The invention also aims to provide an adding method for coking by blending the tar residue with the coal, which can directly pump the tar residue into a coal tower of the coke oven and accurately match with the action of coal distribution, thereby ensuring the uniform mixing of the tar residue and the coal and being beneficial to the coking operation.
The invention is realized by the following steps:
an adding device for coking by blending tar slag and coal comprises an electric cut-off valve, a feeding pipe, a circulating pipe, a nozzle, a distributing pipe and a conveying pump; the circulating pipe is arranged above the coal tower bin and is of an annular structure and is arranged on the periphery of the rotary material distribution trolley in a surrounding manner, and a feeding hole and a plurality of discharging holes are formed in the circulating pipe; one end of the feeding pipe is connected with the tar residue collecting tank through a delivery pump, and the other end of the feeding pipe is communicated with the circulating pipe through a feeding hole of the circulating pipe; one end of each distribution pipe is communicated with the circulating pipe through a plurality of discharge ports of the circulating pipe, and the other end of each distribution pipe penetrates through the coal tower bin chamber and is provided with a nozzle; a plurality of electric cut-off valves interlocked with the rotary distributing trolley are respectively and correspondingly arranged on the distributing pipes.
And heat-insulating jackets are sleeved outside the electric cut-off valve, the feeding pipe, the circulating pipe, the distributing pipe, the conveying pump and the tar residue collecting tank, and steam is introduced into the heat-insulating jackets.
The adding device further comprises a standby delivery pump, the standby delivery pump is connected between the feeding pipe and the tar residue collecting tank, the standby delivery pump and the delivery pump are mutually independent, and a heat-preservation jacket is also sleeved on the standby delivery pump.
The top of the coal tower bin is provided with a plurality of coal adding ports and a plurality of tar residue adding ports; the coal adding ports and the tar residue adding ports are distributed along the circumferential direction of the circulating pipe, the distribution pipes can be inserted into the coal tower bin through the tar residue adding ports, and the coal adding ports, the tar residue adding ports, the distribution pipes and the electric cut-off valves are arranged in a one-to-one correspondence manner; when the rotary distributing trolley rotates, the distributing opening of the rotary distributing trolley can be aligned with one coal adding opening.
And each coal adding port is provided with a limit switch which is triggered by the contact with the rotary distribution trolley, and when the distribution port rotates to be aligned with one of the coal adding ports, the limit switch at the coal adding port can be interlocked with the rotary distribution trolley.
And a load detector is arranged on a coal conveyer belt of the rotary distributing trolley and acts with the rotary distributing trolley in an interlocking manner.
An adding method for coking by blending tar residue with coal comprises the following steps:
step 1: the conveying pump pumps the tar residue in the tar residue collecting tank into a circulating pipe through a feeding pipe;
step 2: rotating the rotary material distribution trolley, judging whether the electric cut-off valve is triggered, if so, executing the step 3 and the step 4 at the same time, and if not, executing the step 8;
and step 3: conveying the tar residues in the circulating pipe into a coal tower chamber through nozzles of a plurality of distribution pipes;
and 4, step 4: the coal conveyer belt of the rotary distribution trolley conveys the coal into the coal tower chamber through a material distribution port and a coal adding port;
and 5: uniformly mixing the tar residue and the coal material in a coal tower chamber;
step 6: rotating the rotary material distribution trolley, judging whether the rotary material distribution trolley leaves a material distribution point, if so, executing the step 7, otherwise, returning to the step 3;
and 7: stopping adding coal materials into the rotary material distribution trolley, simultaneously cutting off a plurality of electric cut-off valves, and stopping adding tar residues;
and 8: and the connecting end of the conveying pump and the tar residue collecting tank is cut off, so that the tar residue circularly flows in the circulating pipe.
The tar residue in the tar residue collecting tank is dehydrated tar residue, and the processing method of the dehydrated tar residue comprises the following steps: and mixing the tar residue with ammonia water, and dehydrating the tar residue by a centrifugal machine.
The triggering conditions of the electric cut-off valve comprise:
(i) the rotary distributing trolley is positioned at a distributing point, namely a distributing opening of the rotary distributing trolley is aligned with one coal adding opening of the coal tower bin, and a limit switch at the coal adding opening is triggered;
(ii) the load detector of the rotary material distribution trolley detects that the load on the coal conveying belt is more than 0;
when the conditions (i) and (ii) are simultaneously met, a plurality of electric shut-off valves are simultaneously triggered to open.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the device disclosed by the invention, the tar residue is pumped and added from the tar residue collecting tank to the coal tower bin through the conveying pump, the feeding pipe, the circulating pipe and the distributing pipe, the whole-process sealed conveying can be realized, and the environmental pollution caused by the problems of tar residue leakage, smell and the like in the transportation process is avoided.
2. The device of the invention forms an on-off and on-standby conveying mode through the conveying pump and the standby conveying pump, can meet the running requirement of the system on continuous production, also avoids production stop accidents caused by the failure of the conveying pump, and improves economic benefits and production benefits.
3. The device realizes the circulating flow of the tar residues in the circulating pipe through the delivery pump, and simultaneously, the tar residues are insulated through the heat-insulating jacket, so that the fluidity of the tar residues is ensured, and the system blockage caused by the solidification and adhesion of the tar residues in the system is avoided.
4. The method realizes the simultaneous quantitative addition of the coal material and the tar slag through the interlocking action of the rotary material distribution trolley and the electric cut-off valve, and simultaneously realizes the uniform mixing of the coal material and the tar slag by the arrangement of the nozzles, thereby being beneficial to coking.
5. The method provided by the invention realizes that the tar residues are directly added into the coal tower bin by pumping without lifting and dumping, reduces the labor intensity, reduces the equipment investment, thereby reducing the production cost, and simultaneously avoids the problems of environmental pollution and material waste caused by overflow when the tar residues are added.
The method can completely treat the tar residues generated in the coking production process, avoids the pollution to the environment in the tar residue conveying and adding process, reduces the complicated operation processes of lifting, dumping and the like, realizes the recycling and utilization efficiency of production wastes, ensures the cleanness in the coking production process, is beneficial to improving the quality of coke such as the lump size and the strength of the coke, solves the problem of recycling treatment of the tar residues, is suitable for the environment-friendly tar residue treatment process of all coking coal treatment systems, improves the economic and social benefits of a coking unit, and has better popularization and application prospects.
Drawings
FIG. 1 is a front view of an adding device for coking by blending tar residue with coal according to the present invention;
FIG. 2 is a top view of an adding device for coking by blending tar residues according to the present invention;
FIG. 3 is a flow chart of the method for adding tar residue to coal blending for coking according to the present invention.
In the figure, 1 electric cut-off valve, 2 feeding pipes, 3 circulating pipes, 4 nozzles, 5 nozzles, 6 conveying pumps, 7 coal tower bins, 71 coal adding ports, 72 tar residue adding ports, 73 limit switches, 8 rotary material distribution trolleys, 81 material distribution ports, 82 load detectors, 83 coal conveying belts, 9 standby conveying pumps and 10 tar residue collecting tanks.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to the attached drawings 1 and 2, the adding device for the tar residue coal blending coking comprises an electric cut-off valve 1, a feeding pipe 2, a circulating pipe 3, a nozzle 4, a distributing pipe 5 and a conveying pump 6; the circulating pipe 3 is arranged above the coal tower bin 7, the circulating pipe 3 is of an annular structure and is arranged on the periphery of the rotary material distribution trolley 8 in a surrounding manner, and a feeding hole and a plurality of discharging holes are formed in the circulating pipe 3; one end of the feeding pipe 2 is connected with a tar residue collecting tank 10 through a delivery pump 6, and the other end of the feeding pipe 2 is communicated with the circulating pipe 3 through a feeding hole of the circulating pipe 3; one end of each distribution pipe 5 is communicated with the circulating pipe 3 through a plurality of discharge ports of the circulating pipe 3, and the other end of each distribution pipe 5 penetrates through and is inserted into the coal tower bin 7 and is provided with a nozzle 4; a plurality of electric cut-off valves 1 which are interlocked with the rotary distributing trolley 8 are respectively and correspondingly arranged on a plurality of distributing pipes 5.
The outside of electric trip valve 1, inlet pipe 2, circulating pipe 3, distributing pipe 5, delivery pump 6 and tar sediment collecting vat 10 all overlap and have put the heat preservation cover (not shown in the figure), let in steam in the heat preservation cover, can prevent that the tar sediment cooling from solidifying and causing the system to block up.
The adding device further comprises a standby delivery pump 9, the standby delivery pump 9 is connected between the feeding pipe 2 and the tar residue collecting tank 10, the standby delivery pump 9 and the delivery pump 6 are mutually independent, and a heat-preservation jacket is also sleeved on the standby delivery pump 9. The conveying pump 6 and the standby conveying pump 9 form an open-standby pumping configuration, the requirement of 24-hour uninterrupted operation can be met, and the conveying pump 6 and the standby conveying pump 9 can realize timing switching operation through control equipment.
The top of the coal tower bin 7 is provided with a plurality of coal adding ports 71 and a plurality of tar residue adding ports 72; the coal adding ports 71 and the tar residue adding ports 72 are arranged along the circumferential direction of the circulating pipe 3, the distribution pipe 5 can be inserted into the coal tower bin 7 through the tar residue adding ports 72, and the coal adding ports 71, the tar residue adding ports 72, the distribution pipe 5 and the electric cut-off valves 1 are arranged in a one-to-one correspondence manner; when the rotary distributing trolley 8 rotates, the distributing opening 81 of the rotary distributing trolley 8 can be aligned with one of the coal adding openings 71, so that the uniform feeding of the tar residues is ensured, and the synchronous adding and uniform mixing of the coal materials and the tar residues are ensured.
Each coal adding port 71 is provided with a limit switch 73 which is triggered by contacting with the rotary distributing trolley 8, when the distributing port 81 rotates to be aligned with one of the coal adding ports 71, the limit switch 73 at the coal adding port 71 can be interlocked with the rotary distributing trolley 8, namely when the limit switch 73 is triggered by contacting with the rotary distributing trolley 8, the distributing port 81 is aligned with the coal adding port 71 and serves as one of the conditions for triggering the plurality of electric cut-off valves 1.
The load detector 82 is arranged on the coal conveyer belt 83 of the rotary distributing trolley 8, the load detector 82 and the rotary distributing trolley 8 are interlocked, namely the load detector 82 detects that the load on the coal conveyer belt 83 at the upstream of the rotary distributing trolley 8 is larger than 0, and the load is used as one of the conditions for triggering the electric cut-off valves 1.
Signals of the load detector 82 and the limit switch 73 are accessed into a central control system and are controlled by a PLC program, so that the on-machine operation and the remote state monitoring and control can be realized, when two conditions that a positioning signal that the rotary material distribution trolley 8 runs to a corresponding material distribution point is received and the load detector 82 detects that the load rate of the coal conveyor belt 83 at the upstream of the rotary material distribution trolley 8 is more than 0 are met, the electric cut-off valve 1 is automatically opened, and tar slag is input into the coal tower chamber 7.
Referring to fig. 3, an adding method for coking by blending tar residue with coal comprises the following steps:
step 1: the conveying pump 6 pumps the tar residue in the tar residue collecting tank 10 into the circulating pipe 3 through the feeding pipe 2.
The tar residue in the tar residue collecting tank 10 is dehydrated tar residue, and the processing method of the dehydrated tar residue comprises the following steps: mix tar sediment and aqueous ammonia, utilize the density difference of tar sediment and aqueous ammonia, dewater the tar sediment through super centrifuge, ensure to collect the tar sediment water content in the tar sediment collecting vat 10 in control range, avoid the too high or low transport that influences the tar sediment of tar sediment water content.
Step 2: and (4) rotating the rotary material distribution trolley 8, judging whether the electric cut-off valve 1 is triggered, if so, executing the step 3 and the step 4 at the same time, and if not, executing the step 8.
The triggering conditions of the electric cut-off valve 1 include:
(i) the rotary distributing trolley 8 is positioned at a distributing point, namely a distributing opening 81 of the rotary distributing trolley 8 is aligned with one of the coal adding openings 71 of the coal tower bin 7, and a limit switch 73 at the coal adding opening 71 is triggered.
(ii) The load detector 82 of the rotary distribution trolley 8 detects a load > 0 on the coal conveyor belt 83.
When the conditions (i) and (ii) are simultaneously satisfied, the plurality of electric shut-off valves 1 are simultaneously triggered to open.
And step 3: the tar residue in the circulating pipe 3 is conveyed into a coal tower chamber 7 through a plurality of nozzles 4 of a distribution pipe 5.
And 4, step 4: the coal conveyer belt 83 of the rotary distributing trolley 8 conveys the coal into the coal tower chamber 7 through the distributing opening 81 and the coal adding opening 71.
And 5: the tar residue and the coal are uniformly mixed in the coal tower chamber 7. Because the coal addition ports 71 and the tar residue addition ports 72 are arranged in one-to-one correspondence along the circumferential direction of the circulating pipe 3, the uniform feeding and mixing of the tar residue and the coal material can be ensured.
Step 6: and (4) rotating the rotary material distribution trolley 8, judging whether the rotary material distribution trolley 8 leaves a material distribution point, if so, executing the step 7, and if not, returning to the step 3.
And 7: the rotary material distribution trolley 8 stops adding coal materials, the electric cut-off valves 1 are cut off simultaneously, and tar residues are stopped adding.
And 8: the connecting end of the conveying pump 6 and the tar residue collecting tank 10 is cut off, so that the tar residue circularly flows in the circulating pipe 3.
Example 1:
the circulating pipe 3 is of a circular ring tubular structure, and the circulating pipe 3 is coaxially arranged above the top of the coal tower chamber 7 and circumferentially surrounds the outer side of the rotary distribution trolley 8; the top of the circulating pipe 3 is provided with a feed inlet and is communicated with the feed pipe 2, and the bottom of the circulating pipe 3 is provided with eight discharge outlets at equal intervals and is respectively connected with eight distributing pipes 5.
The inlet pipe 2 is connected to the tar residue collecting tank 10 through the delivery pump 6, and the tar residue mixes with the aqueous ammonia and collects in the tar residue collecting tank 10 after dehydrating through super centrifuge, can pass through the inlet pipe 2 with the tar residue in the tar residue collecting tank 10 when the delivery pump 6 circular telegram starts and carry the circulating pipe 3 in, and the tar residue water content after the dehydration is about 20%.
A coal adding port 71 is arranged in the middle of the coal tower chamber 7, and eight tar residue adding ports 72 are arranged around the coal adding port 71 at equal intervals; eight distribution pipes 5 are L-shaped structures, the horizontal section of the L-shaped distribution pipe 5 is connected to the discharge port of the circulation pipe 3, nozzles 4 are respectively installed at the bottoms of the vertical sections of the eight distribution pipes 5, the vertical sections of the L-shaped distribution pipes 5 are respectively inserted into the coal tower bin 7 through eight tar residue adding ports 72, the eight nozzles 4 are uniformly distributed at the top of the coal tower bin 7, and tar residues in the circulation pipe 3 can be uniformly fed into the coal tower bin 7 through the eight distribution pipes 5.
All be equipped with electronic trip valve 1 on the horizontal segment of eight distributing pipes 5, when gyration cloth dolly 8 rotates the cloth point, when the cloth mouth 81 of gyration cloth dolly 8 aligns with coal interpolation mouth 71 promptly, limit switch 73 is triggered after with gyration cloth dolly 8 contact, limit switch 73 sends trigger signal to production system's controlgear, limit switch 73 can adopt contact on-off switch, open when limit switch and gyration cloth dolly 8 contact, gyration cloth dolly 8 is closed after leaving limit switch 73 for the mechanical mobile position of response gyration cloth dolly 8. The control device collects the detection value of the load detector 82, and the load detector 82 can adopt a gravity sensor for detecting whether coal exists on the coal conveyer belt 83 at the upstream. When the load on the coal conveyer belt 83 of the rotary distributing trolley 8 is detected to be larger than 0, the control equipment controls the eight electric cut-off valves 1 to be opened simultaneously, so that tar residues in the circulating pipe 3 are uniformly thrown into the coal tower bin 7 through the eight distributing pipes 5 through the nozzles 4, meanwhile, the coal conveyer belt 83 conveys the coal and is thrown into the coal tower bin 7 through the distributing opening 81 and the coal adding opening 71 of the rotary distributing trolley 8, and the problem that the throwing of the tar residues is intermittent and difficult to control is solved.
In the coal tower bin 7, the tar slag is fed from the periphery through the nozzle 4, the coal material is fed through one of the coal adding openings 71 through the material distribution opening of the rotary material distribution trolley 8, and the tar slag can be uniformly wrapped on the coal material from the periphery, so that the tar slag is ensured to be uniformly mixed with the coal material, and the coking operation is facilitated.
The rotary distributing trolley 8 continuously rotates and leaves a distributing point, the distributing port 81 and the coal adding port 71 are staggered, the limit switch 73 is not in contact with the rotary distributing trolley 8 and sends a cut-off signal to the control device, the control device controls the eight electric cut-off valves 1 to cut off simultaneously, tar residue adding is stopped, meanwhile, the connection between the conveying pump 6 and the tar residue collecting tank 10 is cut off, and the conveying pump 6 pushes the tar residue to form internal circulation flowing in the circulating pipe 3, so that the tar residue is ensured not to be solidified.
In 24-hour uninterrupted production, the intermittent operation of one-on one-standby delivery pump can be realized by switching the on-off of the delivery pump 6 and the standby delivery pump 9 through the control equipment, so that the production operation requirement is met, and the condition that the production is stopped due to the failure of the delivery pump is also avoided. In order to prevent the tar slag from cooling and solidifying, steel heat-insulating jackets are respectively arranged on the electric cut-off valve 1, the feeding pipe 2, the circulating pipe 3, the distribution pipe 5, the conveying pump 6, the standby conveying pump 9 and the tar slag collecting tank 10, and steam with the temperature of 130 +/-10 ℃ is introduced into an interlayer of the heat-insulating jackets to play a role in heat insulation and prevent the tar slag from solidifying to block an adding device.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An adding device for coking by blending tar residue with coal is characterized in that: comprises an electric shut-off valve (1), a feed pipe (2), a circulating pipe (3), a nozzle (4), a distribution pipe (5) and a delivery pump (6); the circulating pipe (3) is arranged above the coal tower bin (7), the circulating pipe (3) is of an annular structure and is arranged on the periphery of the rotary material distribution trolley (8) in a surrounding manner, and a feeding hole and a plurality of discharging holes are formed in the circulating pipe (3); one end of the feeding pipe (2) is connected with the tar residue collecting tank (10) through a delivery pump (6), and the other end of the feeding pipe (2) is communicated with the circulating pipe (3) through a feeding hole of the circulating pipe (3); one end of each distribution pipe (5) is communicated with the circulating pipe (3) through a plurality of discharge holes of the circulating pipe (3), and the other end of each distribution pipe (5) penetrates through the coal tower bin (7) and is provided with a nozzle (4); a plurality of electric cut-off valves (1) which are interlocked with the rotary distributing trolley (8) are respectively and correspondingly arranged on a plurality of distributing pipes (5).
2. The tar residue coal blending coking addition device according to claim 1, characterized in that: the external parts of the electric cut-off valve (1), the feeding pipe (2), the circulating pipe (3), the distributing pipe (5), the delivery pump (6) and the tar residue collecting tank (10) are all sleeved with a heat-insulating jacket, and hot steam is introduced into the heat-insulating jacket.
3. The tar residue coal blending coking addition apparatus according to claim 1 or 2, wherein: the adding device further comprises a standby conveying pump (9), the standby conveying pump (9) is connected between the feeding pipe (2) and the tar residue collecting tank (10), the standby conveying pump (9) and the conveying pump (6) are mutually independent, and a heat-preservation jacket is also sleeved on the standby conveying pump (9).
4. The tar residue coal blending coking addition device according to claim 1, characterized in that: the top of the coal tower bin (7) is provided with a plurality of coal adding ports (71) and a plurality of tar residue adding ports (72); the coal adding ports (71) and the tar residue adding ports (72) are distributed along the circumferential direction of the circulating pipe (3), the distribution pipes (5) are inserted into the coal tower bin (7) through the tar residue adding ports (72), and the coal adding ports (71), the tar residue adding ports (72), the distribution pipes (5) and the electric cut-off valves (1) are arranged in a one-to-one correspondence manner; when the rotary distributing trolley (8) rotates, a distributing opening (81) of the rotary distributing trolley (8) can be aligned with one coal adding opening (71).
5. The tar residue coal blending coking addition device according to claim 4, characterized in that: each coal adding port (71) is provided with a limit switch (73) which is triggered by contact with the rotary distributing trolley (8), and when the distributing port (81) rotates to be aligned with one of the coal adding ports (71), the limit switch (73) at the coal adding port (71) can be interlocked with the rotary distributing trolley (8).
6. The tar residue coal blending coking addition apparatus as claimed in claim 1, 4 or 5, wherein: the coal conveyer belt (83) of the rotary distributing trolley (8) is provided with a load detector (82), and the load detector (82) and the rotary distributing trolley (8) are interlocked.
7. An addition method of an addition apparatus for coking by blending the tar residue according to claim 1, comprising: the method comprises the following steps:
step 1: the conveying pump (6) pumps the tar residue in the tar residue collecting tank (10) into the circulating pipe (3) through the feeding pipe (2);
step 2: rotating the rotary material distribution trolley (8), judging whether the electric cut-off valve (1) is triggered, if so, executing the step 3 and the step 4 at the same time, and if not, executing the step 8;
and step 3: the tar residue in the circulating pipe (3) is conveyed into a coal tower chamber (7) through nozzles (4) of a plurality of distributing pipes (5);
and 4, step 4: a coal conveyer belt (83) of the rotary distribution trolley (8) conveys the coal into a coal tower bin (7) through a distribution port (81) and a coal adding port (71);
and 5: the tar slag and the coal material are uniformly mixed in a coal tower chamber (7);
step 6: rotating the rotary material distribution trolley (8), judging whether the rotary material distribution trolley (8) leaves a material distribution point, if so, executing the step 7, otherwise, returning to the step 3;
and 7: stopping adding the coal materials into the rotary material distribution trolley (8), simultaneously cutting off the plurality of electric cut-off valves (1), and stopping adding the tar residues;
and 8: the connecting end of the conveying pump (6) and the tar residue collecting tank (10) is cut off, so that the tar residue circularly flows in the circulating pipe (3).
8. The method for adding tar residue to coal blending for coking as claimed in claim 7, wherein: the tar residue in the tar residue collecting tank (10) is dehydrated tar residue, and the processing method of the dehydrated tar residue comprises the following steps: and mixing the tar residue with ammonia water, and dehydrating the tar residue by a centrifugal machine.
9. The method for adding tar residue to coal blending for coking as claimed in claim 7, wherein: the triggering conditions of the electric cut-off valve (1) comprise:
(i) the rotary distributing trolley (8) is positioned at a distributing point, namely a distributing opening (81) of the rotary distributing trolley (8) is aligned with one coal adding opening (71) of the coal tower bin (7), and a limit switch (73) at the coal adding opening (71) is triggered;
(ii) a load detector (82) of the rotary material distribution trolley (8) detects that the load on a coal conveying belt (83) is more than 0;
when the conditions (i) and (ii) are simultaneously met, a plurality of electric cut-off valves (1) are simultaneously triggered to open.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010119895.6A CN113308262A (en) | 2020-02-26 | 2020-02-26 | Adding device and method for coking by blending tar residue with coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010119895.6A CN113308262A (en) | 2020-02-26 | 2020-02-26 | Adding device and method for coking by blending tar residue with coal |
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| CN113308262A true CN113308262A (en) | 2021-08-27 |
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| CN202010119895.6A Pending CN113308262A (en) | 2020-02-26 | 2020-02-26 | Adding device and method for coking by blending tar residue with coal |
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Application publication date: 20210827 |