CN202438327U - Heat-exchange type active coke purification and regeneration system - Google Patents
Heat-exchange type active coke purification and regeneration system Download PDFInfo
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- CN202438327U CN202438327U CN2012200721783U CN201220072178U CN202438327U CN 202438327 U CN202438327 U CN 202438327U CN 2012200721783 U CN2012200721783 U CN 2012200721783U CN 201220072178 U CN201220072178 U CN 201220072178U CN 202438327 U CN202438327 U CN 202438327U
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Abstract
The utility model discloses a heat-exchange type active coke purification and regeneration system which relates to the technical field of environmental protection. The heat-exchange type active coke purification and regeneration system comprises a regeneration unit, a preheating unit, a heating unit and a heat exchange unit, wherein the regeneration unit comprises a regeneration tower which is sequentially divided into a heating section, a regeneration section and a cooling section from top to bottom; the preheating unit comprises a drying tower which is arranged above the regeneration tower and is communicated with the regeneration tower; the heating unit comprises a heater and a second fan which are connected with the regeneration tower to form a closed circulation loop; the heat exchange unit comprises a heat exchanger which is internally provided with a high-temperature gas pipeline and a normal-temperature gas pipeline; and the high-temperature gas pipeline is connected with a regeneration tower pipeline through a first fan, and the normal-temperature gas pipeline is connected with a drying tower pipeline. The heat-exchange type active coke purification and regeneration system provided by the utility model is suitable for carrying out reduction regeneration on active coke.
Description
Technical field
The utility model relates to environmental technology field, relates in particular to a kind of treatment system of the activated coke (activated carbon) that is used for desulphurization denitration being carried out purifying regeneration.
Background technology
The flue gas desulfurization and denitrification technology belongs to dry type absorption method technology to activated coke (or claiming activated carbon), is to remove agent with active Jiaozhuo that coal is processed, under the activated coke catalytic action, and SO
2And O
2And H
2O reacts, at last with H
2SO
4Form in occupation of the activated centre, causes activated coke to SO attached in the activated coke hole
2Adsorption capacity weaken gradually; Simultaneously, NO and O
2And NH
3Reaction generates N
2, NO
2With NH
3Reaction generates N
2Thereby, reach and remove SO in the flue gas
2Purpose with NOx.Activated coke is the critical material that influences desulphurization denitration performance and efficient, in the desulphurization denitration purifier, and the activated coke that adsorption capacity descends; Must regenerate to it; Make the ammonium sulfate thermal decomposition that removes in the agent, carry out the thermal decomposition of sulfuric acid simultaneously, come into operation again after the restorability.
The moving bed thermal regeneration method that generally adopts at present, regeneration temperature is about 400 ℃ and keep a period of time, under heating state, the H that activated coke is adsorbed
2SO
4Be reduced to SO with C (activated coke) reaction
2, the ammonium sulfate decomposes becomes nitrogen, water, sulfur dioxide simultaneously, and activated coke is recovered absorption property, can be recycled.The thermal regeneration reaction of activated coke is equivalent to activated coke is carried out activation once more.
Patent No. ZL 02112580.5; Granted publication CN 1132677C, name is called the Chinese utility model patent of moving desorptive equipment for activated coke, and moving desorptive equipment for activated coke is a kind of device that the activated coke of adsorbing sulfur dioxide is regenerated and restored; This device is linked to each other in proper order by import warehouse, imported valve, import transitional storehouse, heating cabinet, reaction warehouse, cooling storehouse, outlet transitional storehouse, outlet valve from top to bottom and forms; Between the outer wall of outlet transitional storehouse above each several part, be equipped with heat-barrier material the outer wall of upper and lower each several part is isolated from each other, in heating cabinet; Be provided with the heat exchanger of heating; Be provided with cooling heat exchanger in cooling in the storehouse, be communicated with by heater between the top of heat heat exchanger bottom and cooling heat exchanger, be communicated with by circulating pump between the top of the heat exchanger of heating and the bottom of cooling heat exchanger; In reaction warehouse and the top of heating cabinet be equipped with blast pipe, this blast pipe links to each other with aspiration pump.In fact anatomize and to know that regenerating unit mainly is divided into bringing-up section, conversion zone and cooling section.Wherein, bringing-up section and cooling section are equipped with pipe heat exchanger, and heating/refrigerating gas carries out heat exchange through tube wall and activated coke, and cooling section outlet high-temperature gas is sent into bringing-up section heating activated coke after the electric heater heating, and it is temperature required to make it reach regeneration; The bringing-up section exit gas imports cooling section inlet cooling activated coke through circulating pump.Conduct heat through tube wall, activated coke is regenerated at conversion zone, and the gas of the sulfur dioxide that contains high concentration that bears is again extracted out through the regeneration blower fan.This device bringing-up section is used for the cooling of cooling section activated coke by the cooled gas of activated coke; Gas through the heating of cooling section activated coke is admitted to electric heater continuation heating; Heating back gas is sent into bringing-up section heating activated coke, and the energy that the required external world of bringing-up section provides is more, and capacity usage ratio is low.
The utility model content
Energy to the required external world of bringing-up section in the existing activated coke regenerating unit provides is more; The problem that capacity usage ratio is low; The purpose of the utility model provides a kind of a kind of heat exchange type activated coke purifying regeneration treatment system that can heat, make full use of simultaneously the cooling section heat to the preheating of activated coke elder generation again; Bringing-up section is an independently heating systems, and preheating section and cooling section are carried out the energy circulation utilization, thereby effectively solves the low problem of energy utilization rate in the prior art; Realized effective utilization of energy, not only energy-conservation but also reduce cost.
The utility model solves the technical scheme that its technical problem adopted: said treatment system comprises regenerating unit, preheating device, heater and heat-exchanger rig; Said regenerating unit comprises a regenerator, and said regenerator is divided into bringing-up section, regenerator section and cooling section from top to bottom successively; Said preheating device comprises a drying tower, and said drying tower is arranged on the top of said regenerator and is communicated with said regenerator through pipeline, and said drying tower air directly contacts with activated coke carries out preheating to activated coke; Said heater comprises a heater, second blower fan, and said heater, second blower fan are connected to form the closed loop through pipeline and said regenerator, is used for the activated coke of said regenerator bringing-up section is heated; Said heat-exchanger rig comprises a heat exchanger; The gas at normal temperature pipeline that is provided with the high-temperature gas pipeline in the said heat exchanger and carries out heat exchange with said high-temperature gas pipeline; Said high-temperature gas pipeline is connected to form a closed loop through first blower fan and said regenerator pipeline, is used for the activated coke of said regenerator cooling section is cooled off; Said gas at normal temperature pipeline is connected with said drying tower pipeline, is used for that the air after the heat exchange is sent into said drying tower activated coke is carried out preheating.
Patent device is carried out refinement to the flow process of whole activated coke regeneration; Be divided into preheating, heating, regeneration, cooling; Directly contact with activated coke and carry out preheating through being input to warm-up phase after the heat absorption of normal temperature air with cooling stage; Thereby make bringing-up section, the regenerator section of activated coke become two stages independently, cooling section and bringing-up section intersect to form a separate phases each other, and the activated coke after the preheating has had certain temperature like this; Can be heated to regeneration temperature faster in bringing-up section; Because bringing-up section and regenerator section become two separate phases, thereby the heat exchange blower fan of bringing-up section can be controlled like this and the leaving air temp of heater is controlled the rigid requirement of efficiency of heating surface reduction for heat exchange area, the whole height of equipment can be reduced.Same regenerator section also can come further to influence the regeneration efficiency of regenerator section through the efficiency of heating surface of control bringing-up section.
Gas at normal temperature pipeline one end of said heat exchanger is connected with the air blower pipeline, and its other end is connected with said drying tower pipeline.Form the activated coke after the closed loop cooling is regenerated between heat exchanger and the regenerator cooling section, the air blower that communicates with heat exchanger is constantly sent into air in the gas at normal temperature pipeline, in heat exchanger, is got into drying tower by thermal conductance thermal medium heating back.Therefore, the heat energy that activated coke cooling is discharged in the regenerator cooling section is brought into drying tower to the activated coke heating and recycle by air indirectly.The purpose that the guiding heat-conducting medium circulates is all played in being provided with of blower fan, and then has improved the conversion efficiency of energy.
Be connected through at least one import discharger between said drying tower and the said regenerator bringing-up section, said import discharger is selected for use to activated coke wearing and tearing, material valve that shear action is as far as possible little, like star, butterfly baiting valve.
The connecting line of said import discharger is provided with atmospheric valve.
The top of said drying tower is connected with an import blocking valve, and the end of said regenerator cooling section is connected with an outlet discharger, and said outlet discharger is star baiting valve or butterfly baiting valve.
The beneficial effect of the utility model:
One, the activated coke regeneration efficiency is high: in the regenerating unit of the utility model; Activated coke through with enter into regenerator after hot-air directly contacts preheating and heat, and bringing-up section can independently control the efficiency of heating surface, heating-up temperature, heated air from bottom to top flows; Carry out thermal energy exchange with the activated coke that moves from top to down; Heated air from bottom to top temperature progressively reduces, and activated coke is in moving process from top to bottom, and its temperature progressively raises; Make the activated coke temperature that gets into regenerator regenerator section reach the regeneration requirement, regeneration efficiency is high.
Two, regenerator cooling section energy fully reclaims: heat exchanger, first blower fan, air blower and regenerator are formed a circulation process.The high temperature active coke of heat-conducting medium after entering regenerator cooling section cooling regeneration under the promotion of first blower fan; In heat exchanger; High temperature heat conducting medium is sent here heat transferred by air blower air, the hot-air after the heat exchanger heat exchange are delivered to by the road and are used for the activated coke of preheating from desulfurizing tower in the drying tower.Thus, the heat energy that the activated coke cooling after the regeneration is discharged is used to the activated coke heating from desulfurizing tower, and the recovery utilization rate of heat is high; In addition, heat exchanger utilizes air as cooling medium, and expense is low, and using water wisely is not polluted environment, long service life, thus reduce operating cost; And the high-temperature gas pipeline in the cooling section is a closed loop, and security of operation is stable.
Three, in the utility model in the regenerator in the circulation process of bringing-up section, cooling section separately member be routine, mature equipment, it is simple to operate, control easily, and is easy to maintenance.
Four, in the patent device, activated coke and heat-conducting medium carry out heat exchange, the regeneration reducing sufficient reacting, and regeneration efficiency is high; In the closed circuit that heat-exchanger rig and regenerator constitute, as the heat-conducting medium in this closed circuit, make that the cool cycles process of activated coke is safer by inert gas; Cooling section and heat exchanger carry out heat exchange in this patent, and the high temperature air after the heat exchange enters into drying tower and directly contacts with activated coke and carry out preheating, and the high temperature air after the heat exchange enters into drying tower activated coke is carried out preheating; Thereby it is more to have overcome the energy that the external world provides in the prior art; The problem that capacity usage ratio is low because air is directly discharged after the drying tower preheating, does not therefore have specific (special) requirements for heat exchange area; Bringing-up section is independent of preheating section simultaneously; Can carry out independent control, thus integral device can accomplish small and exquisite as far as possible, thereby reduced equipment manufacturing cost and construction cost.
Description of drawings
Fig. 1 is the treatment system overall structure sketch map of the utility model;
The drawing reference numeral explanation:
1-drying tower 2-import discharger 3-regenerator 4-second blower fan
5-heater 6-air blower 7-heat exchanger 8-first blower fan
9-outlet discharger 10-bringing-up section 11-regenerator section
12-cooling section 13-charging blocking valve
The specific embodiment
Combine accompanying drawing and embodiment that the utility model is done further explain at present.
In conjunction with Fig. 1 the treatment system of the activated coke purifying regeneration of present embodiment is described, treatment system comprises regenerating unit, preheating device, heater and heat-exchanger rig; Regenerating unit comprises a regenerator 3, and regenerator 3 is divided into bringing-up section 10, regenerator section 11 and cooling section 12 from top to bottom successively; Preheating device comprises a drying tower 1, and drying tower 1 is arranged on the top of regenerator 3 and is communicated with regenerator 3 through pipeline; Heater comprises a heater 5, second blower fan 4, and heater 5, second blower fan 4 are connected to form the closed loop through pipeline and regenerator 3, are used for the activated coke of regenerator bringing-up section 10 is heated; Said heat-exchanger rig comprises a heat exchanger 7; The gas at normal temperature pipeline that is provided with the high-temperature gas pipeline in the heat exchanger 7 and carries out heat exchange with the high-temperature gas pipeline; The high-temperature gas pipeline is connected to form a closed loop through first blower fan 8 with regenerator 3 pipelines, is used for the activated coke of regenerator cooling section 12 is cooled off; The gas at normal temperature pipeline is connected with drying tower 1 pipeline, is used for that the air after the heating is sent into drying tower 1 activated coke from desulfurizing tower is carried out preheating, and air gets into former flue discharging after the heat exchange.
In this patent, the design demand of first blower fan 8 can reach the purpose that the guiding heat-conducting medium constantly flows in closed circuit, and therefore in fact first blower fan 8 can be arranged on arbitrary position of high-temperature gas pipeline.
Be connected through at least one import discharger 2 between drying tower 1 and the bringing-up section 10, import discharger 2 is selected for use to activated coke wearing and tearing, material valve that shear action is as far as possible little, like star discharge valve, butterfly discharge valve.The connecting line of import discharger 2 is provided with atmospheric valve.The top of drying tower 1 is connected with an import blocking valve 13.In drying tower 1; Activated coke and the air after heat exchanger 7 heat exchange carry out power conversion; The heat that has utilized regenerator cooling section 12 to discharge fully; Make activated coke before getting into regenerator 3, carry out preheating, the regeneration reducing reaction of activated coke is more abundant, the beneficial effect with energy savings.First blower fan 8 and second blower fan 4 all play the purpose of quickening the heat-conducting medium circulation, improve energy conversion efficiency.
In regenerator bringing-up section 10; Activated coke and heat-conducting medium carry out heat exchange, and the mode of heat exchange can be passed through the pipe heat exchanger conduct energy, also can directly contact exchange; But consider the handling problem of security and heat-conducting medium, preferably carry out heat exchange through pipe heat exchanger.The pipe heat exchanger heat exchange is a routine techniques; Adopt the mode of pipe type heat transfer to describe in detail in the applicant's's disclosed " 02112580.5 of patent No. ZL is called moving desorptive equipment for activated coke " the Chinese utility model patent, repeat no more at this to activated coke heating, cooling.Form the activated coke after the closed loop cooling is regenerated between the high-temperature gas pipeline of heat exchanger 7 and the regenerator; The air blower 6 that communicates with the gas at normal temperature pipeline of heat exchanger 7 is constantly sent into air in the gas at normal temperature pipeline, in heat exchanger 7, is got into the activated coke of drying tower 1 preheating from desulfurizing tower after the heat exchange of thermal conductance thermal medium.Therefore, the heat energy that activated coke cooling is discharged in the regenerator cooling section 12 is brought into drying tower 1 to the activated coke heating by air, and circulation recycles, and the heat energy that has effectively utilized regenerator cooling section 12 to discharge has been practiced thrift system energy consumption.
The course of work of activated coke regeneration desorb is following:
Activated coke from desulfurizing tower enters into drying tower 1 through one or more import blocking valves 13; Activated coke directly contacts preheating with hot-air from heat exchanger 7 in the drying tower 1, and air gets into former flue discharging after the heat exchange, and the temperature of the activated coke of this moment does not reach the temperature of regenerative response; Therefore; The warm of activated coke is safe, and the air after the heat exchange discharged by flue, can not get in the regenerator 3.Activated coke enters into the bringing-up section 10 of regenerator 3 after the preheating through one or more import dischargers 2; Second blower fan, 4 outlet heat-conducting medium heater vias, 5 heating backs get into 10 pairs of activated coke of regenerator bringing-up section heats, and heat-conducting medium gets into heater 5 heat cycles by 4 extractions of second blower fan and circulation after the heat exchange; Activated coke after the heating is from up to down passed under the gravity effect in the flow process of regenerator regenerator section 11, progressively is heated to about 350 ℃ regenerative response takes place, and that bears is rich in SO again
2Gas is reproduced blower fan and takes away; The activated coke that flows into regenerator cooling section 12 obtained regeneration and temperature higher; Need its cooling could be discharged; The heat-conducting medium of first blower fan, 8 outlets cools off activated coke, and the heat-conducting medium after the heat exchange cools off through the high-temperature gas pipeline of heat exchanger 7, and cooling back heat-conducting medium gets into regenerator cooling section 12 through 8 circulations of first blower fan; Gas in the heat exchanger 7 gas at normal temperature pipelines is provided by air blower 6; High temperature air gets into drying tower 1 after the heat exchange, to from the direct contact drying of the activated coke of desulfurizing tower, thereby realizes the recycling of energy; Regenerator cooling section 12 cooled activated coke recycle after outlet discharger 9 is discharged reclaim equiment, accomplish regenerative operation.
Utilize the treatment system of the utility model, adopt following mode that activated coke is regenerated, concrete processing method is following:
(a) activated coke preheating: get in the drying towers 1 through charging blocking valve 13 from the activated coke of desulfurizing tower, directly contact preheating with hot-air from heat exchanger 7, air is discharged from flue;
(b) activated coke heating: the activated coke after the preheating joins in the regenerator 3 through import discharger 2, and activated coke moves to bringing-up section 10 in regenerator 3, and the high temperature heat conducting medium of being seen off by second blower fan 4 heats;
(c) activated coke regeneration: activated coke moves to regenerator regenerator section 11, and at this, activated coke is reproduced, and that bears is rich in SO again
2Gas is reproduced blower fan and takes away;
(d) activated coke cooling: the activated coke after the regeneration gets in the regenerator cooling section 12; Heat-conducting medium gets in the regenerator cooling section 12 from heat exchanger 7 and cools off activated coke; Cooled off through heat exchanger 7 by the heat-conducting medium after the activated coke heating; Cooling back heat-conducting medium is recycled to be sent in the regenerator cooling section 12, and the air of being introduced by air blower 6 is sent in the drying tower 1 after heat exchanger 7 heat exchange, is used for the activated coke of preheating from desulfurizing tower.Cooled activated coke recycles after discharging treatment system, accomplishes regenerative operation.
Wherein, heat-conducting medium is an inert gas in the bringing-up section 10 of regenerator and the cyclic process of cooling section 12, and system's operating safety factor is high, is preferably nitrogen.Activated coke is heated to 300 ℃～450 ℃ in regenerator bringing-up section 10 regenerative response takes place.
The activated coke regeneration treatment system of the utility model has made full use of used heat, and then energy savings, and it can also use at needs certain material is reacted or cracking at a certain temperature, to obtain the occasion of a kind of solid matter and a kind of gaseous substance.
Those skilled in the art will recognize that; The above-mentioned specific embodiment is exemplary; Be in order to make those skilled in the art can better understand this patent content; Should not be construed as is the restriction to this patent protection domain, changes or modifies so long as disclose spiritual any being equal to of being done according to this patent, all falls into this patent protection domain.
Claims (5)
1. heat exchange type activated coke purifying regeneration treatment system, it is characterized in that: said treatment system comprises regenerating unit, preheating device, heater and heat-exchanger rig;
Said regenerating unit comprises a regenerator (3), and said regenerator (3) is divided into bringing-up section (10), regenerator section (11) and cooling section (12) from top to bottom successively;
Said preheating device comprises a drying tower (1), and said drying tower (1) is arranged on the top of said regenerator (3) and is communicated with said regenerator (3) through pipeline, and said drying tower (1) air directly contacts with activated coke carries out preheating to activated coke;
Said heater comprises a heater (5), second blower fan (4), and said heater (5), second blower fan (4) are connected to form the closed loop through pipeline and said regenerator (3), is used for the activated coke of said regenerator bringing-up section (10) is heated;
Said heat-exchanger rig comprises a heat exchanger (7); The gas at normal temperature pipeline that is provided with the high-temperature gas pipeline in the said heat exchanger (7) and carries out heat exchange with said high-temperature gas pipeline; Said high-temperature gas pipeline is connected to form a closed loop through first blower fan (8) and said regenerator (3) pipeline, is used for the activated coke of said regenerator cooling section (12) is cooled off; Said gas at normal temperature pipeline is connected with said drying tower (1) pipeline, is used for that the air after the heat exchange is sent into said drying tower (1) activated coke is carried out preheating.
2. treatment system according to claim 1 is characterized in that: gas at normal temperature pipeline one end of said heat exchanger (7) is connected with air blower (6) pipeline, and its other end is connected with said drying tower (1) pipeline.
3. treatment system according to claim 2 is characterized in that: be connected through at least one import discharger (2) between said drying tower (1) and the said regenerator bringing-up section (10), said import discharger (2) is star baiting valve or butterfly baiting valve.
4. treatment system according to claim 3 is characterized in that: the connecting line of said import discharger (2) is provided with atmospheric valve.
5. treatment system according to claim 1; It is characterized in that: the top of said drying tower (1) is connected with an import blocking valve (13); The end of said regenerator cooling section (12) is connected with an outlet discharger (9), and said outlet discharger (9) is star baiting valve or butterfly baiting valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200721783U CN202438327U (en) | 2012-02-29 | 2012-02-29 | Heat-exchange type active coke purification and regeneration system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200721783U CN202438327U (en) | 2012-02-29 | 2012-02-29 | Heat-exchange type active coke purification and regeneration system |
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| CN202438327U true CN202438327U (en) | 2012-09-19 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580706A (en) * | 2012-02-29 | 2012-07-18 | 上海克硫环保科技股份有限公司 | Heat exchange type active coke purifying and generating process system and heat exchange type active coke purifying and generating process method |
| CN109364683A (en) * | 2018-11-19 | 2019-02-22 | 江苏环集团有限公司 | A kind of activated coke moving bed nitrogen heats oxygen barrier regenerative system and regeneration method |
| CN112295354A (en) * | 2019-07-30 | 2021-02-02 | 中冶长天国际工程有限责任公司 | Regulation and control method for inhibiting SRG flue gas crystallization |
| CN114440227A (en) * | 2022-03-11 | 2022-05-06 | 江苏碳峰蓝节能科技有限公司 | Belt type in-situ oxidation device |
-
2012
- 2012-02-29 CN CN2012200721783U patent/CN202438327U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580706A (en) * | 2012-02-29 | 2012-07-18 | 上海克硫环保科技股份有限公司 | Heat exchange type active coke purifying and generating process system and heat exchange type active coke purifying and generating process method |
| CN102580706B (en) * | 2012-02-29 | 2014-03-26 | 上海克硫环保科技股份有限公司 | Heat exchange type active coke purifying and generating process system and heat exchange type active coke purifying and generating process method |
| CN109364683A (en) * | 2018-11-19 | 2019-02-22 | 江苏环集团有限公司 | A kind of activated coke moving bed nitrogen heats oxygen barrier regenerative system and regeneration method |
| CN112295354A (en) * | 2019-07-30 | 2021-02-02 | 中冶长天国际工程有限责任公司 | Regulation and control method for inhibiting SRG flue gas crystallization |
| CN112295354B (en) * | 2019-07-30 | 2022-04-12 | 中冶长天国际工程有限责任公司 | Regulation and control method for inhibiting SRG flue gas crystallization |
| CN114440227A (en) * | 2022-03-11 | 2022-05-06 | 江苏碳峰蓝节能科技有限公司 | Belt type in-situ oxidation device |
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Granted publication date: 20120919 |
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