CN205156341U - Fused salt tedge coke oven crude gas waste heat recovery device - Google Patents
Fused salt tedge coke oven crude gas waste heat recovery device Download PDFInfo
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- CN205156341U CN205156341U CN201520861888.8U CN201520861888U CN205156341U CN 205156341 U CN205156341 U CN 205156341U CN 201520861888 U CN201520861888 U CN 201520861888U CN 205156341 U CN205156341 U CN 205156341U
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- 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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Abstract
The utility model discloses a fused salt tedge coke oven crude gas waste heat recovery device, including the fused salt jar, the fused salt heat exchanger, the fused salt pump, the fused salt jar is connected with the fused salt pump, the fused salt pump is connected with the fused salt heat exchanger, the inlet end and the waste gas piping of high temperature of raw coke oven gas tedge are connected, the subsequent processing equipment that gets into is seen from the end of giving vent to anger off through the pipeline to raw coke oven gas after the heat transfer cooling, fused salt follow raw coke oven gas rises and gets into the exothermic equipment of hot melt salt after the pipe wall absorbs heat, be equipped with endothermic medium in the exothermic equipment of hot melt salt, hot melt salt gets into the fused salt jar from the exothermic equipment of hot melt salt after the cooling after the heat transfer in the exothermic equipment of hot melt salt. The utility model discloses utilize the hot melt salt device to realize the heat exchange of high temperature raw coke oven gas and fused salt, system compact structure has reduced in the raw coke oven gas tar and has driped blue or green - graphitization gradually at pipe inner wall's condensation, tar and stop up the problem of tedge, use and the maintenance cost low, equipment operational safety is high, avoids fused salt pipe blockage.
Description
Technical field
The utility model relates to coke oven high temperature raw coke oven gas heat recovery technical field, particularly relates to a kind of fused salt tedge waste heat of coke oven crude gas retracting device.
Background technology
Coke oven raw gas temperature is out about about 750 DEG C, the heat taken out of is equivalent to 33 ~ 35 ﹪ of the total amount of heat that coking by coke oven consumes, for ease of purification and the process of rear operation, in prior art, common way is: spray cycle ammoniacal liquor directly contacts with raw coke oven gas, vaporize in a large number by cyclic ammonia water, make raw coke oven gas sharply be cooled to 80 ~ 83 DEG C and deliver to follow-up coal gas refining system.In the said process of prior art, the converting heat of high temperature raw coke oven gas is useless water at low temperature steam (being about about 80 DEG C) and needs a large amount of recirculated water to cool, the defect existed is, both waste the heat of high temperature raw coke oven gas, consume again a large amount of water resources.What prior art was conventional uses water heat-obtaining structure, and the defect of existence is, easily produces localized hyperthermia's water vapor phase transformation thus cause equipment explosion hidden danger and danger with water heat-obtaining.The employing deep fat structure that has of prior art in addition, the defect of existence is that in raw coke oven gas, tar easily produces local coking or carbonization, easily causes the blockage problem of interior heat collecting device cold side.
In addition, large quantifier elimination has been done to the heat recovery of coke oven high temperature raw coke oven gas in home and abroad, also corresponding preheating recovery structure and method is had in prior art, but structure of the prior art and method Problems existing are: due to the inherent characteristic of raw coke oven gas, there is great operational defect and potential safety hazard in these structures and method, does not therefore all obtain formal industrial applications in the industrial production.Such as, the vaporization of water leg disclosed in prior art mode, the mixture of water and steam is walked between chuck, chuck inner core walked by high temperature raw coke oven gas, its main defect existed is: because chuck inner tank theca is the mixture of water and steam, chuck inner core wall temperature is close to the mixture temperature of water and steam, and the tar in raw coke oven gas is in the condensation of chuck inner core inwall, and the blue or green – graphitization of drop causes tedge to block gradually.
Summary of the invention
The purpose of this utility model is exactly the problems referred to above existed for solving prior art, provides a kind of fused salt tedge waste heat of coke oven crude gas retracting device; The hot melt salt device that the utility model utilizes fused salt tank, fused salt heat exchanging device, pump for liquid salts to form realizes the heat exchange of high temperature raw coke oven gas and fused salt, system architecture is compact, to decrease in raw coke oven gas tar in the condensation of inner-walls of duct, solve tar gradually Li Qing – graphitization blocking tedge problem, use and maintenance cost is low, equipment safety in operation is high, conveniently can regulate the temperature after raw coke oven gas and fused salt heat exchanging, avoid fused salt line clogging.
The technical scheme of the utility model technical solution problem is:
A kind of fused salt tedge waste heat of coke oven crude gas retracting device, comprise fused salt tank, fused salt heat exchanging device, pump for liquid salts, described fused salt pot bottom side is connected with the entrance point of pump for liquid salts by fused salt inlet pipeline, the port of export of pump for liquid salts is connected with fused salt heat exchanging device by fused salt outlet conduit one, fused salt flow duct is provided with in fused salt heat exchanging device, raw coke oven gas tedge, raw coke oven gas tedge is covered by the axial bore of fused salt flow duct, the inlet end of raw coke oven gas tedge is connected with high temperature raw coke oven gas pipeline, raw coke oven gas after heat exchange cooling is sent through piping from outlet side and is entered subsequent processing device, fused salt enters hot melt salt pipeline by the outlet of fused salt flow duct in fused salt flow duct after the heat absorption of raw coke oven gas rising tube wall, hot melt salt pipeline is connected with hot melt salt heat-releasing apparatus one end, heat-absorbing medium is provided with in hot melt salt heat-releasing apparatus, hot melt salt is lowered the temperature in hot melt salt heat-releasing apparatus with after heat-absorbing medium heat exchange, then fused salt recovery channel is entered from hot melt salt heat-releasing apparatus, fused salt recovery channel is connected with fused salt tank.
Described fused salt tank is connected with electric heater.
Described fused salt outlet conduit one is provided with switch valve one, fused salt outlet conduit two in parallel is provided with in the side of fused salt outlet conduit one, described fused salt pipeline two is connected with fused salt auxiliary oven by heating tube, and the fused salt outlet conduit two of heating tube both sides is respectively equipped with switch valve two, switch valve three.
The heat heating that described auxiliary fused salt heating furnace utilizes coke-stove gas to burn.
Through fused salt heat exchanging device heat absorption after hot temperature of molten salt be 300 °, hot melt salt in hot melt salt heat-releasing apparatus with heat-absorbing medium heat exchange after temperature reduce to 250 °; Be 800 ° from the raw gas temperature the high temperature raw coke oven gas pipeline be connected with raw coke oven gas tedge, the raw gas temperature in the increase in pipeline after the heat release of fused salt heat exchanging device, cooling is 300 ° ~ 500 °.
The beneficial effects of the utility model:
1. the hot melt salt device that the utility model utilizes fused salt tank, fused salt heat exchanging device, pump for liquid salts to form realizes the heat exchange of high temperature raw coke oven gas and fused salt, system architecture is compact, use and maintenance cost is low, equipment safety in operation is high, conveniently can regulate the temperature after raw coke oven gas and fused salt heat exchanging, avoid fused salt line clogging.
2. the present invention through fused salt heat exchanging device heat absorption after hot temperature of molten salt be 300 °, hot melt salt in hot melt salt heat-releasing apparatus with heat-absorbing medium heat exchange after temperature reduce to 250 °; It is 800 ° from the raw gas temperature the high temperature raw coke oven gas pipeline be connected with raw coke oven gas tedge, raw gas temperature in increase in pipeline after the heat release of fused salt heat exchanging device, cooling is 300 ° ~ 500 °, the present invention utilizes fused salt and tedge to make full use of the waste heat of high temperature raw coke oven gas by adopting, the heat-obtaining temperature of the raw coke oven gas after heat exchange, cooling is higher, avoid the condensation of tar in raw coke oven gas, slow down the blockage problem even eliminating the hot side of interior heat collecting device.With conventional the comparing with water heat-obtaining structure of prior art, avoid and get with water the equipment explosion danger that the water vapor phase transformation of thermogenetic localized hyperthermia causes.In addition compared with the conduction oil structure of prior art, avoid local coking or the carbonization of tar in raw coke oven gas, slow down the blockage problem even eliminating interior heat collecting device cold side.
2. fused salt tank of the present invention is connected with electric heater, by utilizing electric heater, auxiliary heating is carried out to fused salt tank, guarantee in hot melt salt heat-releasing apparatus with heat-absorbing medium heat exchange after lower the temperature after fused salt be not less than predetermined minimum temperature, avoid the blocking of the too low fused salt pipeline caused of temperature of molten salt, keep the unimpeded and equipment of fused salt pipeline to run well, play its function needed.
3. the heat that the present invention utilizes coke-stove gas to burn heats auxiliary fused salt heating furnace, ensure that fused salt enters fused salt heat exchanging device with suitable temperature instead of too low temperature, avoid the obstructed equipment fault even blocking and cause of the fused salt outlet conduit one caused because temperature of molten salt is too low.
4. the present invention is provided with fused salt outlet conduit two, fused salt pipeline two is connected with fused salt auxiliary oven by heating tube, the heat burnt by utilizing coke-stove gas heats auxiliary fused salt heating furnace, ensure that fused salt enters fused salt heat exchanging device with suitable temperature instead of too low temperature, avoid the obstructed equipment fault even blocking and cause of the fused salt outlet conduit one caused because temperature of molten salt is too low, utilize coke-stove gas as fuel simultaneously, also be the energy making full use of on-the-spot generation, investment and use cost low.
Accompanying drawing explanation
Fig. 1 is the structure chart of the utility model device.
Detailed description of the invention
In order to understand the present invention better, explain embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 1, a kind of fused salt tedge waste heat of coke oven crude gas retracting device, comprise fused salt tank 1, fused salt heat exchanging device 3, pump for liquid salts 2, bottom described fused salt tank 1, side is connected with the entrance point of pump for liquid salts 2 by fused salt inlet pipeline, the port of export of pump for liquid salts 2 is connected with fused salt heat exchanging device 3 by fused salt outlet conduit 1, fused salt flow duct is provided with in fused salt heat exchanging device 3, raw coke oven gas tedge 14, raw coke oven gas tedge is covered by the axial bore of fused salt flow duct, the inlet end of raw coke oven gas tedge is connected with high temperature raw coke oven gas pipeline 6, raw coke oven gas after heat exchange cooling is sent through piping from outlet side and is entered subsequent processing device, fused salt enters hot melt salt pipeline 8 by the outlet of fused salt flow duct in fused salt flow duct after the heat absorption of raw coke oven gas rising tube wall, hot melt salt pipeline 8 is connected with hot melt salt heat-releasing apparatus 4 one end, heat-absorbing medium is provided with in hot melt salt heat-releasing apparatus 4, hot melt salt is lowered the temperature in hot melt salt heat-releasing apparatus 4 Yu after heat-absorbing medium heat exchange, then fused salt recovery channel 9 is entered from hot melt salt heat-releasing apparatus 4, fused salt recovery channel 9 is connected with fused salt tank 1.
Hot temperature of molten salt after fused salt heat exchanging device 3 absorbs heat is 300 °, and hot melt salt temperature in hot melt salt heat-releasing apparatus 4 and after heat-absorbing medium heat exchange reduces to 250 °; It is 800 ° from the raw gas temperature the high temperature raw coke oven gas pipeline 6 be connected with raw coke oven gas tedge, raw gas temperature in increase in pipeline after fused salt heat exchanging device 3 heat release, cooling is 300 ° ~ 500 °, the pipelines such as fused salt tank 1, fused salt heat exchanging device 3, fused salt outlet conduit 1 are provided with thermometer, and thermometer is connected with temperature indicator.
The present invention utilizes fused salt and tedge to make full use of the waste heat of high temperature raw coke oven gas by adopting, and the heat-obtaining temperature of the raw coke oven gas after heat exchange, cooling is higher, avoids the condensation of tar in raw coke oven gas, slows down the blockage problem even eliminating the hot side of interior heat collecting device.With conventional the comparing with water heat-obtaining structure of prior art, avoid and get with water the equipment explosion danger that the water vapor phase transformation of thermogenetic localized hyperthermia causes.In addition compared with the conduction oil structure of prior art, avoid local coking or the carbonization of tar in raw coke oven gas, slow down the blockage problem even eliminating interior heat collecting device cold side.
Described fused salt tank 1 is connected with electric heater 10.By utilizing electric heater, auxiliary heating is carried out to fused salt tank, guarantee in hot melt salt heat-releasing apparatus 4 with heat-absorbing medium heat exchange after lower the temperature after fused salt be not less than predetermined minimum temperature, avoid the blocking of the too low fused salt pipeline caused of temperature of molten salt, keep the unimpeded and equipment of fused salt pipeline to run well, play its function needed.
The heat of coke-stove gas burning heats auxiliary fused salt heating furnace, ensure that fused salt enters fused salt heat exchanging device with suitable temperature instead of too low temperature, avoid the obstructed equipment fault even blocking and cause of the fused salt outlet conduit one caused because temperature of molten salt is too low.
Described fused salt outlet conduit 1 is provided with switch valve 1, fused salt outlet conduit 2 12 in parallel is provided with in the side of fused salt outlet conduit 1, described fused salt pipeline 2 12 is connected with fused salt auxiliary oven 5 by heating tube 16, and the fused salt outlet conduit 2 12 of heating tube both sides is respectively equipped with switch valve 2 13, switch valve 3 15.The heat heating that described auxiliary fused salt heating furnace 5 utilizes coke-stove gas to burn.The heat burnt by utilizing coke-stove gas heats auxiliary fused salt heating furnace, ensure that fused salt enters fused salt heat exchanging device with suitable temperature instead of too low temperature, avoid the obstructed equipment fault even blocking and cause of the fused salt outlet conduit one caused because temperature of molten salt is too low.
By reference to the accompanying drawings the detailed description of the invention of utility model is described although above-mentioned; but the restriction not to the utility model protection domain; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (5)
1. a fused salt tedge waste heat of coke oven crude gas retracting device, it is characterized in that, comprise fused salt tank, fused salt heat exchanging device, pump for liquid salts, described fused salt pot bottom side is connected with the entrance point of pump for liquid salts by fused salt inlet pipeline, the port of export of pump for liquid salts is connected with fused salt heat exchanging device by fused salt outlet conduit one, fused salt flow duct is provided with in fused salt heat exchanging device, raw coke oven gas tedge, raw coke oven gas tedge is covered by the axial bore of fused salt flow duct, the inlet end of raw coke oven gas tedge is connected with high temperature raw coke oven gas pipeline, raw coke oven gas after heat exchange cooling is sent through piping from outlet side and is entered subsequent processing device, fused salt enters hot melt salt pipeline by the outlet of fused salt flow duct in fused salt flow duct after the heat absorption of raw coke oven gas rising tube wall, hot melt salt pipeline is connected with hot melt salt heat-releasing apparatus one end, heat-absorbing medium is provided with in hot melt salt heat-releasing apparatus, hot melt salt is lowered the temperature in hot melt salt heat-releasing apparatus with after heat-absorbing medium heat exchange, then fused salt recovery channel is entered from hot melt salt heat-releasing apparatus, fused salt recovery channel is connected with fused salt tank.
2. fused salt tedge waste heat of coke oven crude gas retracting device as claimed in claim 1, it is characterized in that, described fused salt tank is connected with electric heater.
3. fused salt tedge waste heat of coke oven crude gas retracting device as claimed in claim 1, it is characterized in that, described fused salt outlet conduit one is provided with switch valve one, fused salt outlet conduit two in parallel is provided with in the side of fused salt outlet conduit one, described fused salt pipeline two is connected with fused salt auxiliary oven by heating tube, and the fused salt outlet conduit two of heating tube both sides is respectively equipped with switch valve two, switch valve three.
4. fused salt tedge waste heat of coke oven crude gas retracting device as claimed in claim 3, is characterized in that, the heat heating that described auxiliary fused salt heating furnace utilizes coke-stove gas to burn.
5. fused salt tedge waste heat of coke oven crude gas retracting device as claimed in claim 1, is characterized in that, the hot temperature of molten salt after the heat absorption of fused salt heat exchanging device is 300 °, hot melt salt in hot melt salt heat-releasing apparatus with heat-absorbing medium heat exchange after temperature reduce to 250 °; Be 800 ° from the raw gas temperature the high temperature raw coke oven gas pipeline be connected with raw coke oven gas tedge, the raw gas temperature in the increase in pipeline after the heat release of fused salt heat exchanging device, cooling is 300 ° ~ 500 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861888.8U CN205156341U (en) | 2015-10-31 | 2015-10-31 | Fused salt tedge coke oven crude gas waste heat recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520861888.8U CN205156341U (en) | 2015-10-31 | 2015-10-31 | Fused salt tedge coke oven crude gas waste heat recovery device |
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| CN205156341U true CN205156341U (en) | 2016-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974260A (en) * | 2016-10-24 | 2018-05-01 | 上海宜知节能环保科技有限公司 | Coke oven coke oven uprising tube raw coke oven gas residual neat recovering system |
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2015
- 2015-10-31 CN CN201520861888.8U patent/CN205156341U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974260A (en) * | 2016-10-24 | 2018-05-01 | 上海宜知节能环保科技有限公司 | Coke oven coke oven uprising tube raw coke oven gas residual neat recovering system |
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