CN102329627A - Coke oven crude gas waste heat recycling method and dedicated heat exchange type ascending tube - Google Patents
Coke oven crude gas waste heat recycling method and dedicated heat exchange type ascending tube Download PDFInfo
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- CN102329627A CN102329627A CN201110256107A CN201110256107A CN102329627A CN 102329627 A CN102329627 A CN 102329627A CN 201110256107 A CN201110256107 A CN 201110256107A CN 201110256107 A CN201110256107 A CN 201110256107A CN 102329627 A CN102329627 A CN 102329627A
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- 239000007789 gas Substances 0.000 title claims abstract description 165
- 239000000571 coke Substances 0.000 title claims abstract description 38
- 239000002918 waste heat Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004064 recycling Methods 0.000 title claims abstract description 7
- 230000001174 ascending effect Effects 0.000 title abstract 10
- 238000012546 transfer Methods 0.000 claims description 18
- 239000003034 coal gas Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 241000628997 Flos Species 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 235000011089 carbon dioxide Nutrition 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000004134 energy conservation Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
- 238000004939 coking Methods 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
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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 invention relates to a coke oven crude gas waste heat recycling method and a dedicated heat exchange type ascending tube, belonging to the technical field of coke oven heat energy recycle. In the technical scheme, gas as a heat exchange medium enters into a heat exchanger in the ascending tube through a gas outlet after being pressurized by a circulator; in the heat exchanger in the ascending tube, the gas is heated by high-temperature gas which flows out of the ascending tube after being cooled by the gas; the heated gas enters into a waste heat utilization heat exchanger after flowing out of the heat exchanger in the ascending tube, enters into the circulator to be pressurized after discharging heat energy and then enters the next circulation, and by such a circulation, the heat energy of the gas in the ascending tube of a coke oven is continuously taken out of the ascending tube by the gas and is utilized by the waste heat utilization heat exchanger. By using the coke oven crude gas waste heat recycling method and the dedicated heat exchange type ascending tube, tar bonding or floccule plugging can not be generated on a heat exchange surface, and in addition, heat exchange devices in the ascending tube are excellent without damage and can be started up for working at any time, and other parts can be put into work at any time, thus, the technical problem expected to be solved for a long term in the field is solved.
Description
Technical field
The present invention relates to a kind of waste heat of coke oven crude gas recoverying and utilizing method and special-purpose heat exchange type upcast, belong to waste heat of coke oven crude gas recovery and utilization technology field.
Background technology
With regard to heat energy utilization, from british industrial revolution for hundreds of years, accumulated abundant background technology at industrial circle.Yet these background technologies are since coke enterprise uses carbonization chamber method to fire coke, and the waste heat of high temperature coke oven raw gas just fails effectively to utilize always in the upcast, can only waste heat with the cyclic ammonia water cooling.For example, with raw gas heat exchange, employing water jacket method etc., all do not have successfully.In the last few years; Adopt hot pipe technique and the thermal oil technology all can not long-period stable operation, subject matter is: these background technologies all overcome the difficulty of coke-oven gas heat exchange, the heat-transfer surface tar that bonds occurred; Floss stops up, and heat-transfer surface leaks influences coke production; Or when other partial fault of heat-exchange system quits work, carbonization chamber method, an oven coke has not been produced, and blowing out in the short period of time halfway is so problems such as heat pipe booster, the overheated coking of thermal oil occur.Done detailed explanation in one piece of " waste heat recovery of coking raw gas is shouldered heavy responsibilities " article of being write by Feng Hengfu that these present situations were published on September 14th, 2010 " China Metalurgy ", this article comprises the content of three parts altogether: the one, and the necessity of coking raw gas UTILIZATION OF VESIDUAL HEAT IN; The 2nd, China's coking raw gas UTILIZATION OF VESIDUAL HEAT IN process; The 3rd, accelerate the research and development of coking raw gas heat recovery technology.Stressed that in this part " it two is to select stable, reliable, high-efficiency heat conduction material.The recovery of coking high temperature raw gas heat needs good heat-conducting that heat is derived fast, and feedwater, thermal oil or other heat transferring mediums are provided then.Raw gas passes through with fast speed at the upcast inner core, requires whole heat transfer process fast necessary, and can reclaim the raw gas waste heat to greatest extent.Physics, chemical qualitative change must and not take place greater than the thermal conductivity (80 watts/meter) of iron and steel in the thermal conductivity of material, and iron and steel is not had corrosion.From " to iron and steel do not have corrosion " angle judge that the high-efficiency heat conduction material of its alleged needs refers to heat-conducting medium.
Summary of the invention
The object of the invention provides a kind of waste heat of coke oven crude gas recoverying and utilizing method and special-purpose heat exchange type upcast; Make heat-transfer surface not burn into bonding tar or floss obstruction; And when other part of heat-exchange system quit work, the heat exchange device in the upcast was excellent, and other part is devoted oneself to work at any time; The heat exchange device can start work at any time in the upcast, solves the problems referred to above that exist in the background technology.
Technical scheme of the present invention is: a kind of waste heat of coke oven crude gas recoverying and utilizing method, and adopt gas as heat transferring medium, the gas that needs heating gets into the interchanger in the upcast directly or after the circulator pressurization; In the interchanger in upcast, gas is heated by raw gas, and raw gas flows out upcast after by gas cooling; Heated gas is after interchanger flows out in the upcast; Get into subsequent processing or get into the UTILIZATION OF VESIDUAL HEAT IN interchanger; Emit get into the circulator pressurization behind the heat energy after, get into circulation next time again, so move in circles; Coal gas heat energy is constantly taken out of from upcast by gas in the coke oven coke oven uprising tube, is utilized by the UTILIZATION OF VESIDUAL HEAT IN interchanger.
In view of the working temperature requirement of circulator, heated gas gets into the UTILIZATION OF VESIDUAL HEAT IN interchanger, emit heat energy after, after being introduced into water cooler and being cooled to the circulator working temperature, get into the circulator pressurization again; If this moment is low excessively as the gas temperature of heat transferring medium, run into coal gas of high temperature behind the entering upcast, be easy to generate condensation and stop up, the gas after through well heater circulator being pressurizeed heats, and arrives 120-250 ℃ to gas heating.
To gas earlier cooling, reheat, cooling is in order to adapt to the requirement of circulator working temperature, and reheat is in order to prevent that producing condensation stops up; If circulator can be in long term operation under the hot environment; Then do not need the cooling of gas elder generation, reheat; After heated gas gets into the heat release of UTILIZATION OF VESIDUAL HEAT IN interchanger; As long as gas temperature between 120-250 ℃, just can directly get into the interchanger in the upcast through circulator pressurization back, such energy-saving effect is best.
If the gas in the entering upcast is a kind of process gas that needs heating, need only it under working temperature pressure, the reliable and stable heat-transfer surface that do not destroy of chemical property, the temperature of self need not heating before the entering upcast between 120 ℃-250 ℃, but direct heat exchange.After the heat exchange, get into next process, if its temperature is lower than 120 ℃-250 ℃, then need arrange heater heats to this TR to prevent heat-transfer surface condense tar or floss obstruction etc.
Said gas converting heat medium; Comprise argon Ar, carbonic acid gas CO, nitrogen N 2 etc. or their mixture; These gases are prone to cheap the acquisition in industry; And do not produce chemical transformation such as oxidation, corrosion under the high temperature with heat-transfer surface, following in working order is the medium of gas, also can be at high temperature to react slower gas such as water vapour etc. with heat-transfer surface.
Coke oven generally all has up to a hundred upcasts, if when recycling the heat energy of coal gas in the upcast simultaneously, can adopt following mode:
One of which, parallel way, many upcasts; The interchanger parallel connection is arranged in each upcast, with a circulator, gives the gas house steward getting into after the gas pressurization; Each gives gas branch pipe to the total pipe coupling of gas, and each enters into interchanger in the upcast that is connected to gas that gas branch pipe distributes, and gas gets into the return-air house steward after the heat exchange; House steward enters into heat recovery heat exchanger through return-air, gets into the circulator pressurization behind the recovery waste heat again, and the recovery heat so moves in circles; Because coal gas all has stable flow rate and temperature in every upcast; The gas vol that also need be complementary these heat recovery and utilizations gets in the upcast interchanger; So require plant capacities such as circulator, heat recovery heat exchanger enough big; Its gas flow is the summation of whole single upcast air inputs for the gas flow of single upcast.
Its two: series system; Interchanger arranged in series in many upcasts, each upcast, recuperated gas gets into first rising intraductal heat exchange after the circulator pressurization; Get into the heat exchange of first UTILIZATION OF VESIDUAL HEAT IN interchanger after coming out; Do not return circulator after the gas cooling, directly get into second rising intraductal heat exchange, carry out successively; After requiring heated gas to get into the heat release of UTILIZATION OF VESIDUAL HEAT IN interchanger, gas temperature directly gets into next circulation between 120-250 ℃, and series connection arrangement has produced energy-conservation windfall effect like this, and, do not need circulator to have comparatively large capacity.
During parallel way; If circulator can not adapt to hot environment work, after all need cooling off, the gas that goes out the UTILIZATION OF VESIDUAL HEAT IN interchanger could get into the circulator pressurization, and every gas that gets into interchanger in the upcast all is heated; And the circulation of circulator tolerance is big; Energy consumption is high, so series system has brought beyond thought energy-saving effect, energy-conservation and saving facility investment.
If only recycle the preceding process gas of having addressed that needs heating without circulator, then series, parallel all can, select for use according to practical situation, energy-saving effect is close.
The special-purpose heat exchange type upcast that a kind of waste heat of coke oven crude gas is recycled; Contained gas import, upcast housing, gas converting heat passage, pneumatic outlet; Be provided with the gas converting heat passage in the upcast housing, the gas feed of gas converting heat passage and pneumatic outlet are arranged on the upcast housing.
Said upcast housing comprises upper flange, upcast shell, lower flange, and upper flange, lower flange are separately positioned on the two ends up and down of upcast shell, constitutes the upcast housing, and the gas feed of gas converting heat passage and pneumatic outlet are arranged on the upcast shell.The upcast housing parts belongs to known part, and the flange of installing with the integral body equipment is that part meets installation requirement.
Be provided with thermal insulation layer in the upcast shell.
The heat exchange surface of said gas converting heat passage contacts with the interior coal gas of upcast, is two separate, as to seal spaces in gas converting heat passage and the upcast housing.
Said gas feed and pneumatic outlet mobile gas comprise argon Ar, carbonic acid gas CO, water vapour H
2O, nitrogen N 2 or their mixture, these gases are prone to cheap the acquisition in industry, and do not produce chemistry or physical change such as oxidation, corrosion with heat-transfer surface under the high temperature, are the medium of stabilizing gas under the heat transfer state.
Positively effect of the present invention is: the present invention has overcome the technological prejudice that will adopt the high-efficiency heat conduction material; Adopting poor conductor gas is heat-conducting; Make heat-transfer surface not burn into bonding tar or floss obstruction, and when other part of heat-exchange system quit work, the heat exchange device in the upcast was excellent; Other part is devoted oneself to work at any time; The heat exchange device can start work at any time in the upcast, have energy-saving effect outstanding, can long-period stable operation, flexible operation, the easy characteristics of maintenance and repair, solved this area and hoped the technical problem that solves for a long time.
Description of drawings
Accompanying drawing 1 is the process flow diagram of the embodiment of the invention;
Accompanying drawing 2 is heat exchange type upcast structural representations of the present invention;
Among the figure: upper flange 1, gas feed 2, upcast shell 3, thermal insulation layer 4, gas converting heat passage 5, pneumatic outlet 6, lower flange 7, heat exchange surface 8.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further through embodiment.
In the present embodiment, a kind of waste heat of coke oven crude gas recoverying and utilizing method adopts gas as heat transferring medium, after the circulator pressurization, gets into the interchanger in the upcast through pneumatic outlet; In the interchanger in upcast, gas is heated by coal gas of high temperature, and coal gas flows out upcast after by gas cooling; Heated gas is after interchanger flows out in the upcast; Get into the UTILIZATION OF VESIDUAL HEAT IN interchanger; Emit get into the circulator pressurization behind the heat energy after, get into circulation next time again, so move in circles; Coal gas heat energy is constantly taken out of from upcast by gas in the coke oven coke oven uprising tube, is utilized by the UTILIZATION OF VESIDUAL HEAT IN interchanger.In view of the working temperature requirement of circulator, heated gas gets into the UTILIZATION OF VESIDUAL HEAT IN interchanger, emit heat energy after, after being introduced into water cooler and being cooled to the circulator working temperature, get into the circulator pressurization again; If this moment is low excessively as the gas temperature of heat transferring medium, run into coal gas of high temperature behind the entering upcast, be easy to generate condensation and stop up, the gas after should pressurizeing to cooling through well heater earlier heat, and the TR of gas heating is 120-250 ℃.
Problem definitions more of the present invention:
The selection of
heat-transfer medium.The tradition heat transferring medium except production technique need, people when UTILIZATION OF VESIDUAL HEAT IN, first-selected water, because of its specific heat is big, heat transfer coefficient is high.Next selects the big high-efficiency heat conduction medium of thermal capacitance; Yet the present invention overcomes technological prejudice; Hot poor conductor argon Ar, carbonic acid gas CO, nitrogen N 2 etc. or its mixture have been selected; These gases except in industry, be prone to cheap obtain and high temperature under do not produce chemical transformation such as oxidation, corrosion with heat-transfer surface, produced the not effect of burn into coking oil or floss obstruction of heat-transfer surface in working order down.
The selection of
interchanger.With regard to gas heater, water cooler and UTILIZATION OF VESIDUAL HEAT IN interchanger, can adopt prior art, mainly be the interchanger in the upcast, because it will work in upcast, the original work influence coke production of interfere upcast not again.Therefore need to solve some problems: the one, the obstruction of solid-state floss in the adhesion of liquefiable part tar and the coke-oven gas in the coke-oven gas.The solution of this problem mainly adopts gaseous media to carry out heat exchange, before upcast, establishes gas heater or makes the system schema of UTILIZATION OF VESIDUAL HEAT IN heat exchanger outlet temperature near the gas heater temperature out.The 2nd, overcome the corrosion of high temperature coke oven coal gas and wash away.Adopt the corrosion resistant low-alloy of high temperature resistance.
Water cooler is established in series connection and parallelly connected energy-saving effect before the circulator, make the gas cooling, guarantees the circulator works better, establishes well heater behind the circulator, avoids heat-transfer surface bonding tar and floss to stop up.The UTILIZATION OF VESIDUAL HEAT IN interchanger with the different genus known technology of heat energy utilization method, generally considers reasonably to make its recycle gas temperature out to equal perhaps the temperature out near well heater from the demand of heat energy taste to efficient of conducting heat and economy.Before getting into next upcast interchanger, just need not arrange well heater.Gas gets into well heater needs thermal source; Gas gets into water cooler needs low-temperature receiver, could do the recycle gas of needs heating the low-temperature receiver of water cooler, and needing the refrigerative recycle gas to do the thermal source of well heater? Qualitative conclusion is sure passable; Quantitatively conclusion is that the part heat exchange can only be arranged; Heat source temperature is not enough, and because of circulating flow rate is identical, the temperature out of UTILIZATION OF VESIDUAL HEAT IN interchanger equals perhaps near the heater outlet temperature.Illustrate: 100ml100 ℃ water can not be heated to 100ml80 ℃ water 100 ℃.So must supplemental heat source and low-temperature receiver.Series connection and parallel connection all only need a well heater and a water cooler; Circulating flow rate only equals the gas vol in the upcast interchanger during series connection; And parallelly connected circulating flow rate is the summation of heat exchange tolerance in all upcasts; Heat and cold that event needs to replenish will be more than series connection, so placed in-line energy-saving effect is more outstanding.
With reference to accompanying drawing 2; The special-purpose heat exchange type upcast that a kind of waste heat of coke oven crude gas is recycled; Comprise upper flange 1, gas feed 2, upcast shell 3, thermal insulation layer 4, gas converting heat passage 5, pneumatic outlet 6, lower flange 7; Upper flange, lower flange are separately positioned on the two ends up and down of upcast shell, constitute the upcast housing, are provided with thermal insulation layer in the upcast shell; Its special feature is to be provided with the gas converting heat passage in the upcast housing, and the gas feed of gas converting heat passage and pneumatic outlet are arranged on the upcast shell.The heat exchange surface 8 of said gas converting heat passage contacts with the interior coal gas of upcast, is two separate, as to seal spaces in gas converting heat passage and the upcast housing.
The high temperature coke oven raw gas gets into the gas indirect heat exchange in upcast and the gas converting heat passage 5 by lower flange 7, is gone out by upper flange 1 afterwards, and the gas converting heat medium gets into gas converting heat passage 5 by import 2, after being heated, is gone out by pneumatic outlet 6.
Claims (10)
1. a waste heat of coke oven crude gas recoverying and utilizing method is characterized in that adopting gas as heat transferring medium, and the gas that needs heating gets into the interchanger in the upcast directly or after the circulator pressurization; In the interchanger in upcast, gas is heated by raw gas, and raw gas flows out upcast after by gas cooling; Heated gas is after interchanger flows out in the upcast; Get into subsequent processing or get into the UTILIZATION OF VESIDUAL HEAT IN interchanger; Emit get into the circulator pressurization behind the heat energy after, get into circulation next time again, so move in circles; Coal gas heat energy is constantly taken out of from upcast by gas in the coke oven coke oven uprising tube, is utilized by the UTILIZATION OF VESIDUAL HEAT IN interchanger.
2. the waste heat of coke oven crude gas recoverying and utilizing method according to claim 1; It is characterized in that: in view of the working temperature requirement of circulator, heated gas gets into the UTILIZATION OF VESIDUAL HEAT IN interchanger, emit heat energy after; After being introduced into water cooler and being cooled to the circulator working temperature; Get into the circulator pressurization again, the gas after through well heater circulator being pressurizeed then heats, and arrives 120-250 ℃ to gas heating.
3. the waste heat of coke oven crude gas recoverying and utilizing method according to claim 1 is characterized in that: if the gas that gets in the upcast is a kind of process gas of needs heating, as long as it is under working temperature pressure; Chemical property is reliable and stable, does not destroy heat-transfer surface, and the temperature of self need not heating before the entering upcast between 120 ℃-250 ℃; But direct heat exchange; After the heat exchange, get into next process, if its temperature is lower than 120 ℃-250 ℃; Then need arrange heater heats to arrive this TR, stop up to prevent condense tar or floss of heat-transfer surface.
4. according to claim 1,2,3 said waste heat of coke oven crude gas recoverying and utilizing methods, it is characterized in that said gas converting heat medium, comprise argon Ar, carbonic acid gas CO, nitrogen N 2 or their mixture.
5. according to claim 1,2,3 said waste heat of coke oven crude gas recoverying and utilizing methods, it is characterized in that: the interchanger parallel connection is arranged in many upcasts, each upcast; With a circulator; Give the gas house steward getting into after the gas pressurization, each gives gas branch pipe to the total pipe coupling of gas, and each enters into interchanger in the upcast that is connected to gas that gas branch pipe distributes; Gas gets into the return-air house steward after the heat exchange; House steward enters into heat recovery heat exchanger through return-air, gets into the circulator pressurization behind the recovery waste heat again, and the recovery heat so moves in circles; Because coal gas all has stable flow rate and temperature in every upcast; The gas vol that also need be complementary these heat recovery and utilizations gets in the upcast interchanger; So require plant capacities such as circulator, heat recovery heat exchanger enough big; Its gas flow is the summation of whole single upcast air inputs for the gas flow of single upcast.
6. according to claim 1,2,3 said waste heat of coke oven crude gas recoverying and utilizing methods; It is characterized in that: interchanger arranged in series in many upcasts, each upcast, recuperated gas gets into first rising intraductal heat exchange after the circulator pressurization; Get into the heat exchange of first UTILIZATION OF VESIDUAL HEAT IN interchanger after coming out; Do not return circulator after the gas cooling, directly get into second rising intraductal heat exchange, carry out successively; After requiring heated gas to get into the heat release of UTILIZATION OF VESIDUAL HEAT IN interchanger, gas temperature directly gets into next circulation between 120-250 ℃, and series connection arrangement has produced energy-conservation windfall effect like this, and, do not need circulator to have comparatively large capacity.
7. the special-purpose heat exchange type upcast recycled of a waste heat of coke oven crude gas; It is characterized in that contained gas import (2), upcast housing, gas converting heat passage (5), pneumatic outlet (6); Be provided with the gas converting heat passage in the upcast housing, the gas feed of gas converting heat passage and pneumatic outlet are arranged on the upcast housing.
8. the special-purpose heat exchange type upcast of recycling according to the said waste heat of coke oven crude gas of claim 7; It is characterized in that said upcast housing comprises upper flange (1), upcast shell (3), lower flange (7); Upper flange, lower flange are separately positioned on the two ends up and down of upcast shell; Constitute the upcast housing, the gas feed of gas converting heat passage and pneumatic outlet are arranged on the upcast shell.
9. the special-purpose heat exchange type upcast of recycling according to claim 7 or 8 said waste heat of coke oven crude gas is characterized in that being provided with in the upcast shell thermal insulation layer (4).
10. the special-purpose heat exchange type upcast of recycling according to claim 1 or 2 said waste heat of coke oven crude gas; The heat exchange surface (8) that it is characterized in that said gas converting heat passage (5) contacts with the interior coal gas of upcast, is two separate, as to seal spaces in gas converting heat passage and the upcast housing.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102701161A (en) * | 2012-05-30 | 2012-10-03 | 瓮福（集团）有限责任公司 | Conversion preheating device in sulfuric acid production |
| CN102818389A (en) * | 2012-08-30 | 2012-12-12 | 裴登明 | Method and device for cooling high-temperature waste gas and recovering waste heat |
| CN102838996A (en) * | 2012-06-12 | 2012-12-26 | 唐山市天元化工设备有限公司 | Raw coke oven gas waste-heat utilization method and raw coke oven gas waste-heat utilization equipment |
| CN102925165A (en) * | 2012-11-15 | 2013-02-13 | 上海理工大学 | Afterheat recovery system for raw coke oven gas of coke oven ascension pipe |
| CN103468275A (en) * | 2013-09-12 | 2013-12-25 | 周岩 | Power generation system and method by waste heat of raw coke oven gases of coke oven |
| CN104059676A (en) * | 2014-07-02 | 2014-09-24 | 唐山市宝凯科技有限公司 | Ascending pipe waste heat insertion-type temperature control thermal expansion decoking heat pipe guiding-out method and device |
| CN104498057A (en) * | 2014-12-16 | 2015-04-08 | 济南冶金化工设备有限公司 | Recycling device and method for waste heat of high-temperature raw coal gas of coke oven |
| CN104673331A (en) * | 2015-02-25 | 2015-06-03 | 鞍山拜尔自控有限公司 | Heat exchange and heat energy recovery method employing coke oven ascension pipe and heat exchange and heat energy recovery device employing coke oven ascension pipe |
| CN104946272A (en) * | 2014-03-28 | 2015-09-30 | 宝山钢铁股份有限公司 | Waste heat recovery device for coke oven crude gas and combined-type two-level heat extraction method |
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| CN2438927Y (en) * | 2000-09-25 | 2001-07-11 | 中日青年交流中心 | Flue heat exchanger |
| CN101725954A (en) * | 2008-10-24 | 2010-06-09 | 同济大学 | Novel process for coupling utilization of waste heat recovery of riser of coke oven and coke dry quenching system |
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| CN2438927Y (en) * | 2000-09-25 | 2001-07-11 | 中日青年交流中心 | Flue heat exchanger |
| CN101725954A (en) * | 2008-10-24 | 2010-06-09 | 同济大学 | Novel process for coupling utilization of waste heat recovery of riser of coke oven and coke dry quenching system |
| CN202254957U (en) * | 2011-09-01 | 2012-05-30 | 唐山市天元化工设备有限公司 | Heat exchange type ascending tube for using afterheat of coke oven waste coals |
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| CN102701161A (en) * | 2012-05-30 | 2012-10-03 | 瓮福（集团）有限责任公司 | Conversion preheating device in sulfuric acid production |
| CN102838996A (en) * | 2012-06-12 | 2012-12-26 | 唐山市天元化工设备有限公司 | Raw coke oven gas waste-heat utilization method and raw coke oven gas waste-heat utilization equipment |
| CN102838996B (en) * | 2012-06-12 | 2014-12-10 | 唐山市恒坤科技有限公司 | Raw coke oven gas waste-heat utilization method and raw coke oven gas waste-heat utilization equipment |
| CN102818389A (en) * | 2012-08-30 | 2012-12-12 | 裴登明 | Method and device for cooling high-temperature waste gas and recovering waste heat |
| CN102818389B (en) * | 2012-08-30 | 2014-07-09 | 裴登明 | Method and device for cooling high-temperature waste gas and recovering waste heat |
| CN102925165A (en) * | 2012-11-15 | 2013-02-13 | 上海理工大学 | Afterheat recovery system for raw coke oven gas of coke oven ascension pipe |
| CN103468275A (en) * | 2013-09-12 | 2013-12-25 | 周岩 | Power generation system and method by waste heat of raw coke oven gases of coke oven |
| CN104946272A (en) * | 2014-03-28 | 2015-09-30 | 宝山钢铁股份有限公司 | Waste heat recovery device for coke oven crude gas and combined-type two-level heat extraction method |
| CN104946272B (en) * | 2014-03-28 | 2017-09-26 | 宝山钢铁股份有限公司 | A kind of coal oven dithio-gas waste-heat recovery device and combination two stage heat taking method |
| CN104059676A (en) * | 2014-07-02 | 2014-09-24 | 唐山市宝凯科技有限公司 | Ascending pipe waste heat insertion-type temperature control thermal expansion decoking heat pipe guiding-out method and device |
| CN104059676B (en) * | 2014-07-02 | 2016-03-23 | 唐山市宝凯科技有限公司 | Upcast waste heat insert temperature control thermal expansion decoking heat pipe deriving method and equipment |
| CN104498057A (en) * | 2014-12-16 | 2015-04-08 | 济南冶金化工设备有限公司 | Recycling device and method for waste heat of high-temperature raw coal gas of coke oven |
| CN104673331A (en) * | 2015-02-25 | 2015-06-03 | 鞍山拜尔自控有限公司 | Heat exchange and heat energy recovery method employing coke oven ascension pipe and heat exchange and heat energy recovery device employing coke oven ascension pipe |
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