CN117263294A - Dry quenching waste heat recovery and coking wastewater combined treatment equipment - Google Patents
Dry quenching waste heat recovery and coking wastewater combined treatment equipment Download PDFInfo
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- CN117263294A CN117263294A CN202311492574.0A CN202311492574A CN117263294A CN 117263294 A CN117263294 A CN 117263294A CN 202311492574 A CN202311492574 A CN 202311492574A CN 117263294 A CN117263294 A CN 117263294A
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- dry quenching
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- 238000011084 recovery Methods 0.000 title claims abstract description 80
- 238000010791 quenching Methods 0.000 title claims abstract description 34
- 230000000171 quenching effect Effects 0.000 title claims abstract description 34
- 238000004939 coking Methods 0.000 title claims abstract description 25
- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 139
- 238000002347 injection Methods 0.000 claims abstract description 71
- 239000007924 injection Substances 0.000 claims abstract description 71
- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 47
- 239000000571 coke Substances 0.000 claims abstract description 35
- 238000002955 isolation Methods 0.000 claims description 25
- 230000003197 catalytic effect Effects 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 235000014676 Phragmites communis Nutrition 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 239000012495 reaction gas Substances 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 244000089486 Phragmites australis subsp australis Species 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 230000008569 process Effects 0.000 abstract description 14
- 239000000126 substance Substances 0.000 abstract description 12
- 239000011261 inert gas Substances 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 9
- 238000004064 recycling Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C10B39/00—Cooling or quenching coke
- C10B39/04—Wet quenching
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to the technical field of dry quenching production, in particular to dry quenching waste heat recovery and coking wastewater combined treatment equipment, which comprises the following components: the upper end of the recovery furnace is provided with a top feed inlet for placing dry quenching coke, the bottom of the recovery furnace is integrally formed with a conical suction pipe, and a bottom gas injection device for feeding circulating heat exchange gas is arranged on the conical discharge pipe. The combined treatment device can utilize the circulating mechanism consisting of the middle gas injection device, the bottom gas injection device and the gas collecting device to combine with the external heat exchanger and the filter to utilize the circulating heat exchange gas consisting of inert gas to carry out heat recovery on the dry coke quenching in the recovery furnace, so that the recovery efficiency is high, the influence of dust on the subsequent heat exchange process can be effectively eliminated, and meanwhile, the equipment can also effectively treat coking sewage and harmful substances in steam generated in the coking process through the reaction treatment device, thereby reducing the pollution of the substances to the environment.
Description
Technical Field
The invention relates to the technical field of dry quenching production, in particular to a dry quenching waste heat recovery and coking wastewater combined treatment device.
Background
Coal is an important energy source in China, and coke is formed after the coal is subjected to high-temperature carbonization, and the coke can be used for metallurgy after being treated and cooled by a dry quenching process. The dry quenching process is to introduce inert gas into high-temperature coke, then heat the inert gas by using the coke, so that the inert gas is heated, the heated inert gas is sent into an external heat exchanger for heat exchange, the low-temperature inert gas is produced again after heat exchange, and then the inert gas is sent into the high-temperature coke for heat exchange so as to circulate for a plurality of times until the temperature of the coke is reduced, and the recovered heat can be used for projects such as power generation and the like. However, in the existing dry quenching process, due to the lack of a reasonable method for dispersing and recycling inert gases in coke and a method for directly and efficiently removing dust when recycling the inert gases, the circulation efficiency is low, and the problem that the working efficiency of an external heat exchanger is reduced due to the difficulty in subsequent dust removal is easily caused. Meanwhile, coking wastewater and waste gas are generated due to the fact that coke needs to be humidified and the like in the dry quenching process, and the wastewater and the waste gas need to be reheated in external equipment and harmful substances in the wastewater and the waste gas are removed through combustion reaction and the like after being collected at present, so that the heat of the coke cannot be directly utilized to maintain the reaction more efficiently, and serious waste of the heat is caused.
If the invention can be used for efficiently carrying out heat exchange recovery, reducing the influence of dust on heat recovery, and directly utilizing coke to maintain the temperature required by the reaction when treating active substances such as coking wastewater and the like, the problems can be effectively solved, so that the invention provides the dry quenching waste heat recovery and coking wastewater combined treatment equipment.
Disclosure of Invention
The invention aims to provide a dry quenching waste heat recovery and coking wastewater combined treatment device for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a dry quenching waste heat recovery and coking wastewater combined treatment device comprises:
the upper end of the recovery furnace is provided with a top feed inlet for placing dry quenching, the bottom of the recovery furnace is integrally provided with a conical suction pipe, the conical discharge pipe is provided with a bottom gas injection device for feeding circulating heat exchange gas, and the bottom of the conical discharge pipe is provided with a discharge outlet for discharging the dry quenching;
the gas collecting device is fixed in the middle of the recovery furnace and is used for collecting circulating heat exchange gas in the recovery furnace and then sending the gas into the external heat exchanger, and a vibration dust removing device used for preventing the suction part of the gas collecting device from being blocked by dust is arranged in the gas collecting device;
the reaction treatment device is fixed in the recovery furnace and heats water vapor which is sent into the reaction treatment device from the outside through heat provided by the recovery furnace to carry out reaction treatment;
the middle gas injection device is fixed in the reaction furnace and disperses the circulating heat exchange gas sent from the outside into the dry quenching in the recovery furnace through the gas dispersing device.
Preferably, the bottom gas injection device comprises a bottom gas injection pipe communicated with external circulation heat exchange gas supply equipment, the bottom gas injection pipe is obliquely fixed in the conical discharge pipe at forty-five degrees, a nozzle for gas injection is arranged at the tail end of the bottom gas injection pipe, a dustproof screen plate for placing dust into the bottom gas injection pipe is arranged in the bottom gas injection pipe, a hollow retainer is arranged at the output end of the dustproof screen plate, and a closing-in dustproof metal woven pipe with an opening facing the tail end of the nozzle is arranged on the retainer in a covering mode.
Preferably, the middle gas injection device comprises an annular gas injection pipe fixed in the recovery furnace, the annular gas injection pipe is fixedly communicated with a receiving pipe, and the tail end of the receiving pipe is communicated with an external circulating heat exchange gas supply device.
Preferably, the gas dispersing device comprises a hollow gas injection pipe fixedly communicated with the annular gas injection pipe, a mesh sleeve communicated with the annular gas injection pipe is arranged in the hollow gas injection pipe, at least three conical dust covers for protecting the mesh sleeve from being blocked by dust are fixedly arranged on the mesh sleeve in an array manner, and the conical dust covers are arranged in a stacked manner.
Preferably, the gas collecting device comprises a mounting column fixed with the recovery furnace, a top cover is arranged on the mounting column, the top of the top cover is communicated with the external heat exchanger through a recovery pipe, an isolation sleeve is arranged between the top cover and the mounting column, a filter screen for filtering gas is arranged at the top of the isolation sleeve, and an isolation cover for protecting the isolation sleeve and the filter screen from dry quenching extrusion is arranged on the top cover.
Preferably, a bottom runner communicated with the recovery pipe is arranged in the middle of the mounting column, a filtering sieve plate used for filtering air flow is arranged in the bottom runner, and an air inlet runner communicated with the bottom runner is arranged at the position above the corresponding bottom air injection device at the bottom of the mounting column.
Preferably, the vibration dust collector includes the runner of setting in the top cap, and the exit end and the recovery pipe intercommunication of runner, and the entrance point of runner communicates with the inside of filter screen through the runner of bleeding, fixed mounting has the pivot on the axis of runner, and the bottom of pivot articulates installs gets rid of the hammer, integrated into one piece has on the inside of spacer sleeve with get rid of hammer complex collision board.
Preferably, the bottom of the isolation sleeve is connected with the mounting column and the top of the filter screen is connected with the top cover by adopting buffer reeds, and the outer wall of the isolation sleeve is fixedly provided with dust isolation protrusions which are positioned inside the isolation cover and isolate dust through vibration.
Preferably, the reaction treatment device comprises an annular reaction tube fixed in the recovery furnace, the annular reaction tube is inserted and provided with a heat conduction tube which is in contact with coke for heat conduction, one end of the annular reaction tube is communicated with an external gas-liquid fluid supply device to be reacted through a flow inlet tube, an auxiliary feed tube for receiving external reaction gas and catalytic materials is arranged on the flow inlet tube, the other end of the annular reaction tube is communicated with an external tail gas treatment device through a flow outlet tube, and a slag discharging port for cleaning reaction waste is arranged at the bottom of the annular reaction tube.
Preferably, the inner wall of the annular reaction tube is provided with at least three groups of inclined catalytic mesh plates which are arranged in a downward inclined mode in an array mode, the inclined catalytic mesh plates are provided with catalyst attaching grooves and catalyst attaching net racks, and the tail ends of the inclined catalytic mesh plates are connected with the outer wall of the heat conducting tube and are used for conducting heat.
Compared with the prior art, the invention has the beneficial effects that: the combined treatment device designed by the invention can utilize the circulating mechanism consisting of the middle gas injection device, the bottom gas injection device and the gas collecting device to combine with the external heat exchanger and the filter to recycle heat of the dry coke quenching in the recycling furnace by utilizing the circulating heat exchange gas consisting of inert gas, so that the recycling efficiency is high, the influence of dust on the subsequent heat exchange process can be effectively eliminated, and meanwhile, the equipment can also effectively treat the coking sewage and harmful substances in steam generated in the coking process through the reaction treatment device, thereby reducing the pollution of the substances to the environment and having high practical value.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view showing the structure of embodiment 1 of the present invention;
FIG. 3 is a schematic view of the middle gas injection apparatus according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of a gas dispersing device according to the embodiment 1 of the present invention;
FIG. 5 is a schematic view of the bottom gas injection apparatus according to embodiment 1 of the present invention;
fig. 6 is a structural sectional view of embodiment 2 of the present invention;
FIG. 7 is a schematic diagram showing the structure of a reaction processing apparatus according to example 2 of the present invention.
In the figure: 1. a recovery furnace; 2. a bottom gas injection device; 201. a bottom gas injection pipe; 202. a dust-proof screen; 203. a retainer; 204. a nozzle; 205. closing-in dustproof metal braided tube; 3. a middle gas injection device; 301. an annular gas injection pipe; 302. a receiving tube; 4. a gas collecting device; 401. a recovery pipe; 402. a top cover; 403. an isolation cover; 404. a filter screen; 405. a spacer sleeve; 406. a bottom flow channel; 407. a mounting column; 408. filtering the sieve plate; 409. an intake runner; 5. a reaction treatment device; 501. a flow inlet pipe; 502. an annular reaction tube; 503. a heat conduction pipe; 504. a catalytic screen plate is obliquely arranged; 505. a slag discharge port; 506. a drainage tube; 6. an auxiliary feeding pipe; 7. a vibration dust removing device; 701. a rotating wheel; 702. an air extraction flow passage; 703. a rotating shaft; 704. a collision plate; 705. a throwing hammer; 8. a gas dispersing device; 801. a hollow gas injection tube; 802. a mesh sleeve; 803. a conical dust cover; 9. buffering reed; 10. a top feed port; 11. a conical discharge tube; 12. a discharge port; 13. dust-proof bulges.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by a person skilled in the art without making any creative effort fall within the protection scope of the present invention.
In embodiment 1, referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a dry quenching waste heat recovery and coking wastewater combined treatment equipment, including recovery stove 1, gas collecting device 4, reaction treatment device 5 and middle part gas injection device 3, the upper end of recovery stove 1 is provided with the top feed inlet 10 that is used for putting into the coke, and the bottom integrated into one piece of recovery stove 1 has toper to inhale material pipe 11, install the bottom gas injection device 2 that is used for sending into circulation heat transfer gas on the toper discharge pipe 11, and the bottom of toper discharge pipe 11 is provided with the bin outlet 12 that is used for discharging the coke, gas collecting device 4 is fixed in the middle part of recovery stove 1 and is used for sending into outside heat exchanger after collecting circulation heat transfer gas in the recovery stove 1, and be provided with in the gas collecting device 4 and be used for preventing that gas collecting device 4 from breathing in position is blocked by the dust vibration dust collector 7, reaction device 5 is fixed in recovery stove 1 and carries out the reaction treatment by the vapor that the outside sent into reaction treatment device 5 through the heat heating that recovery stove 1 provided, middle part gas injection device 3 is fixed in reaction stove 1, and circulation heat transfer gas that the outside sent into is dispersed in that is located in recovery stove 1 through gas dispersing device 8.
Referring to fig. 2 and 5, the bottom gas injection device 2 includes a bottom gas injection pipe 201 that is communicated with an external circulation heat exchange gas supply device, the bottom gas injection pipe 201 is obliquely fixed in a conical discharge pipe 11 at forty five degrees, a nozzle 204 for injecting gas is arranged at the end of the bottom gas injection pipe 201, a dust screen 202 for placing dust into the bottom gas injection pipe 201 is arranged in the bottom gas injection pipe 201, a hollow retainer 203 is arranged at the output end of the dust screen 202, a closing-in dust-proof metal woven pipe 205 with an opening facing the end of the nozzle 204 is arranged on the retainer 203 in a covering manner, the dust screen 202 can be made of a metal screen with micropores or a ceramic plate, the retainer 203 is mainly used for supporting the dust-proof metal woven pipe 205 to facilitate the air flow into the dust-proof metal woven pipe 205, the dust-proof metal woven pipe 205 is woven by metal wires to form a funnel shape, and dust and coke residues are prevented from reversely entering the bottom gas injection pipe 201 through the nozzle 204.
Referring to fig. 2 and 3, the middle gas injection device 3 includes an annular gas injection pipe 301 fixed in the recovery furnace 1, a receiving pipe 302 is fixedly connected to the annular gas injection pipe 301, the end of the receiving pipe 302 is communicated with an external circulating heat exchange gas supply device, the gas dispersing device 8 includes a hollow gas injection pipe 801 fixedly connected to the annular gas injection pipe 301, a mesh sleeve 802 is arranged in the hollow gas injection pipe 801 and is communicated with the annular gas injection pipe 301, at least three conical dust covers 803 for protecting the mesh sleeve 802 from dust are fixedly arranged on the mesh sleeve 802 in an array, the conical dust covers 803 are arranged in a stacked manner, the receiving pipe 302 receives circulating heat exchange gas provided by an external device, then sends the gas into the annular gas injection pipe 301, and then sends the circulating heat exchange gas into each gas dispersing device 8 through the annular gas injection pipe 301, the gas dispersing device 8 can discharge the gas into coke through the mesh sleeve 802, the mesh sleeves 802 can be placed in direct contact with the coke and block the mesh sleeves 803, and meanwhile the mesh sleeves 803 can be effectively prevented from entering the mesh sleeves 802 in a vertically stacked manner.
Referring to fig. 2 and 3, the gas collecting device 4 includes a mounting column 407 fixed to the recovery furnace 1, a top cover 402 is disposed on the mounting column 407, the top of the top cover 402 is communicated with an external heat exchanger through a recovery tube 401, a separation sleeve 405 is disposed between the top cover 402 and the mounting column 407, a filter screen 404 for filtering gas is disposed on the top of the separation sleeve 405, a separation cover 403 for protecting the separation sleeve 405 and the filter screen 404 from coke extrusion is disposed on the top cover 402, a bottom flow passage 406 communicated with the recovery tube 401 is disposed in the middle of the mounting column 407, a filtering screen 408 for filtering gas flow is disposed in the bottom flow passage 406, an air inlet flow passage 409 communicated with the bottom flow passage 406 is disposed at a position above the corresponding bottom gas injection device 2, and the gas collecting device 4 is used for collecting circulating heat exchange gas heated in the recovery furnace 1, which is to pass through the filter screen 404 or the bottom flow passage 406 to enter the recovery tube 401, and then is sent into the external heat exchanger by the recovery tube 401 for heat exchange.
Referring to fig. 2 and 3, the vibration dust removing device 7 includes a rotating wheel 701 disposed in a top cover 402, an outlet end of the rotating wheel 701 is communicated with a recovery pipe 401, an inlet end of the rotating wheel 701 is communicated with an interior of a filter screen 404 through an air suction flow channel 702, a rotating shaft 703 is fixedly mounted on a central axis of the rotating wheel 701, a throwing hammer 705 is hinged at a bottom of the rotating shaft 703, a collision plate 704 matched with the throwing hammer 705 is integrally formed on an interior of a separation sleeve 405, a buffer reed 9 is connected between the bottom of the separation sleeve 405 and a mounting post 407 and between a top of the filter screen 404 and the top cover 402, a dust separation protrusion 13 which is disposed in the separation cover 403 and is used for blocking dust through vibration is fixedly mounted on an outer wall of the separation sleeve 405, when an air current enters the rotating wheel 701 through the periodic flow channel 702 and then passes through the rotating wheel 701 to enter the recovery pipe 401, the rotation of the rotating wheel 701 drives the rotating shaft 703 to rotate, so that the swing hammer 705 hinged at the bottom of the rotating shaft 703 swings, the swing hammer 705 collides with the collision plate 704 in the swing process to drive the isolation sleeve 405 to vibrate, so that dust attached to the outside of the isolation sleeve 405 and the filter screen 404 is effectively vibrated and falls off, normal filtration of the dust is avoided, and the isolation sleeve 405 and the filter screen 404 are connected to the mounting post 407 or the top cover 402 by adopting the buffer reed 9, so that the isolation sleeve 405 and the filter screen 404 can vibrate in a larger amplitude in the knocking process of the swing hammer 705, the dust cleaning effect is effectively enhanced, in addition, as a large number of dust isolation bulges 13 are arranged outside the isolation sleeve 405 in a staggered manner, the dust isolation bulges 13 are contacted with dust in airflow and intercept the dust when the isolation sleeve 405 vibrates, thereby removing the dust before it contacts the filter screen 404, further improving the efficiency of cleaning the dust.
Referring to fig. 2, the reaction treatment device 5 includes an annular reaction tube 502 fixed inside the recovery furnace 1, a heat conduction tube 503 contacting with coke is inserted and installed on the annular reaction tube 502, one end of the annular reaction tube 502 is communicated with an external gas-liquid fluid supply device to be reacted through a flow inlet tube 501, an auxiliary feed tube 6 for receiving external reaction gas and catalytic materials is arranged on the flow inlet tube 501, the other end of the annular reaction tube 502 is communicated with an external tail gas treatment device through a flow outlet tube 506, a slag discharging port 505 for cleaning reaction waste is arranged at the bottom of the annular reaction tube 502, the annular reaction tube 502 is connected with the external gas-liquid supply device to be reacted through the flow inlet tube 501, and then the gas-liquid is sent into the annular reaction tube 502 to be heated and simultaneously mixed with substances sent into the auxiliary feed tube 6 for reaction, thereby realizing reaction purification of the gas-liquid components, and effectively reducing pollution of discharged gas substances, and the reacted gas substances are sent into a subsequent treatment device through the flow outlet tube 506 for further purification treatment.
In this embodiment, the operator needs to send the coke in a high temperature state into the recovery furnace 1 by opening the top feed port 10, and the coke is sent out again by opening the discharge port 12 after being cooled by heat exchange in the recovery furnace 1, thereby completing heat recovery. In the heat recovery process, the external equipment mixes inert gases to form circulating heat exchange gases required in the heat exchange process, the circulating heat exchange gases in a low temperature state are respectively injected into cokes positioned in the middle and at the bottom of the recovery furnace 1 through the middle gas injection device 3 and the bottom gas injection device 2, heat in the cokes is recovered to the circulating heat exchange gases in the process of contacting the cokes, then the circulating heat exchange gases are collected again by the gas collecting device 4 and sent into the external heat exchange equipment, and after the circulating heat exchange gases are subjected to heat exchange and filtration purification by the external equipment, the circulating heat exchange gases which are changed into a low temperature state again are sent into the recovery furnace 1 from the middle gas injection device 3 and the bottom gas injection device 2 so as to realize the recovery of heat of coke. In addition, the operation of humidifying the coke and the like in the process of preparing the coke is convenient, and some water vapor or waste water mixed with harmful substances is generated, the water vapor or the waste water is atomized through external equipment and then is sent into the annular reaction tube 502 through the inflow tube 501, and substances required by reactions such as oxygen and the like are sent into the annular reaction tube 502 through the auxiliary inflow tube 6, so that the harmful substances are removed in the annular reaction tube 502, and the coke temperature in the recovery furnace 1 can reach one thousand ℃, so that the materials in the annular reaction tube 502 and the heat conduction tube 503 can be stabilized in a proper temperature range by controlling the heat conduction efficiency of the materials of the wakeup reaction tube 502 and the heat conduction tube and the change of the feeding speed of the inflow tube 501 and the auxiliary inflow tube 6, and particularly, proper reaction conditions can be provided for various reactions with the reaction temperature ranging from the initial temperature of the materials to one thousand ℃, and therefore, the harmful substances in the materials can be effectively purified, compared with the process of collecting the water vapor and the coking waste water in the production process of the coke into other equipment and then processing the materials, the materials have higher treatment efficiency and high practical value.
In embodiment 2, referring to fig. 6 and 7, compared with embodiment 1, at least three groups of inclined catalytic mesh plates 504 which are arranged obliquely downwards are arranged on the inner wall of the annular reaction tube 502 in an array, and catalyst attaching grooves and catalyst attaching racks are arranged on the inclined catalytic mesh plates 504, the tail ends of the inclined catalytic mesh plates 504 are connected with the outer wall of the heat conducting tube 503 and are used for conducting heat, the reaction can be accelerated by arranging the catalyst on the inclined catalytic mesh plates 504, meanwhile, the inclined catalytic mesh plates 504 are connected with the annular reaction tube 502 and the heat conducting tube 503, the reaction can be effectively conducted to accelerate, and the inclined catalytic mesh plates 504 are arranged obliquely, so that solids and liquids generated by the reaction can quickly fall to the bottom of the annular reaction tube 502 to wait for subsequent cleaning, and the reaction products are prevented from being detained on the surface of the catalyst to influence the normal progress of the subsequent reaction.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a dry quenching waste heat recovery and coking wastewater combined treatment equipment which characterized in that includes:
the coke dry quenching device comprises a recovery furnace (1), wherein the upper end of the recovery furnace (1) is provided with a top feed inlet (10) for placing dry quenched coke, the bottom of the recovery furnace (1) is integrally formed with a conical suction pipe (11), the conical discharge pipe (11) is provided with a bottom gas injection device (2) for feeding circulating heat exchange gas, and the bottom of the conical discharge pipe (11) is provided with a discharge outlet (12) for discharging the dry quenched coke;
the gas collecting device (4) is fixed in the middle of the recovery furnace (1) and is used for collecting circulating heat exchange gas in the recovery furnace (1) and then sending the gas into an external heat exchanger, and a vibration dust removing device (7) for preventing the suction part of the gas collecting device (4) from being blocked by dust is arranged in the gas collecting device (4);
a reaction treatment device (5), wherein the reaction device (5) is fixed in the recovery furnace (1) and heats water vapor which is sent into the reaction treatment device (5) from the outside through the heat provided by the recovery furnace (1) to carry out reaction treatment;
the middle gas injection device (3), the middle gas injection device (3) is fixed in the reaction furnace (1), and the middle gas injection device (3) distributes the circulating heat exchange gas sent from the outside into the dry quenching in the recovery furnace (1) through the gas dispersing device (8).
2. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 1, which is characterized in that: the bottom gas injection device (2) comprises a bottom gas injection pipe (201) communicated with external circulating heat exchange gas supply equipment, the bottom gas injection pipe (201) is obliquely arranged and fixed in a conical discharging pipe (11) at forty five degrees, a nozzle (204) used for injecting gas is arranged at the tail end of the bottom gas injection pipe (201), a dustproof screen plate (202) used for placing dust into the bottom gas injection pipe (201) is arranged in the bottom gas injection pipe (201), a hollow retainer (203) is arranged at the output end of the dustproof screen plate (202), and a closing-in dustproof metal woven pipe (205) with an opening facing the tail end of the nozzle (204) is arranged on the retainer (203) in a covering mode.
3. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 1, which is characterized in that: the middle gas injection device (3) comprises an annular gas injection pipe (301) fixed in the recovery furnace (1), a receiving pipe (302) is fixedly communicated with the annular gas injection pipe (301), and the tail end of the receiving pipe (302) is communicated with external circulating heat exchange gas supply equipment.
4. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 3, which is characterized in that: the gas dispersing device (8) comprises a hollow gas injection pipe (801) fixedly communicated with the annular gas injection pipe (301), a mesh sleeve (802) communicated with the annular gas injection pipe (301) is arranged in the hollow gas injection pipe (801), at least three conical dust covers (803) for protecting the mesh sleeve (802) from being blocked by dust are fixedly arranged on the mesh sleeve (802) in an array, and the conical dust covers (803) are arranged in a stacked mode.
5. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 1, which is characterized in that: the gas collecting device (4) comprises a mounting column (407) fixed with the recovery furnace (1), a top cover (402) is arranged on the mounting column (407), the top of the top cover (402) is communicated with an external heat exchanger through a recovery pipe (401), an isolation sleeve (405) is arranged between the top cover (402) and the mounting column (407), a filter screen (404) for filtering gas is arranged at the top of the isolation sleeve (405), and an isolation cover (403) for protecting the isolation sleeve (405) and the filter screen (404) from dry quenching extrusion is arranged on the top cover (402).
6. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 5, which is characterized in that: the middle of the mounting column (407) is provided with a bottom runner (406) communicated with the recovery pipe (401), a filtering sieve plate (408) for filtering air flow is arranged in the bottom runner (406), and an air inlet runner (409) communicated with the bottom runner (406) is arranged at the position above the corresponding bottom air injection device (2) at the bottom of the mounting column (407).
7. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 5, which is characterized in that: vibration dust collector (7) are including setting up runner (701) in top cap (402), and the exit end and the recovery tube (401) intercommunication of runner (701), and the entrance point of runner (701) is through the inside intercommunication of bleed runner (702) and filter screen (404), fixed mounting has pivot (703) on the axis of runner (701), and the bottom of pivot (703) articulates installs and gets rid of hammer (705), integrated into one piece has on the inside of spacer sleeve (405) with get rid of hammer (705) complex collision board (704).
8. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 7, which is characterized in that: the bottom of the isolation sleeve (405) is connected with the mounting post (407) and the top of the filter screen (404) is connected with the top cover (402) through buffer reeds (9), and the outer wall of the isolation sleeve (405) is fixedly provided with dust isolation protrusions (13) which are positioned in the isolation cover (403) and isolate dust through vibration.
9. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 1, which is characterized in that: the reaction treatment device (5) comprises an annular reaction tube (502) fixed inside the recovery furnace (1), a heat conduction tube (503) in contact with coke is inserted and installed on the annular reaction tube (502), one end of the annular reaction tube (502) is communicated with an external gas-liquid fluid supply device to be reacted through a flow inlet tube (501), an auxiliary feed tube (6) for receiving external reaction gas and catalytic materials is arranged on the flow inlet tube (501), the other end of the annular reaction tube (502) is communicated with an external tail gas treatment device through a flow outlet tube (506), and a slag outlet (505) for cleaning reaction waste is arranged at the bottom of the annular reaction tube (502).
10. The combined treatment equipment for dry quenching waste heat recovery and coking wastewater according to claim 9, which is characterized in that: the inner wall of the annular reaction tube (502) is provided with at least three groups of inclined catalytic mesh plates (504) which are obliquely arranged downwards in an array manner, the inclined catalytic mesh plates (504) are provided with catalyst attaching grooves and catalyst attaching net racks, and the tail ends of the inclined catalytic mesh plates (504) are connected with the outer wall of the heat conducting tube (503) and are used for conducting heat.
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|---|---|---|---|
| CN202311492574.0A CN117263294B (en) | 2023-11-10 | 2023-11-10 | Dry quenching waste heat recovery and coking wastewater combined treatment equipment |
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| CN202311492574.0A CN117263294B (en) | 2023-11-10 | 2023-11-10 | Dry quenching waste heat recovery and coking wastewater combined treatment equipment |
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| CN117263294B CN117263294B (en) | 2024-07-05 |
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| CN117263294B (en) | 2024-07-05 |
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