CN102816573A - Coke-oven single novel bridge pipe raw gas waste-heat recovery device - Google Patents
Coke-oven single novel bridge pipe raw gas waste-heat recovery device Download PDFInfo
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- CN102816573A CN102816573A CN2012103179688A CN201210317968A CN102816573A CN 102816573 A CN102816573 A CN 102816573A CN 2012103179688 A CN2012103179688 A CN 2012103179688A CN 201210317968 A CN201210317968 A CN 201210317968A CN 102816573 A CN102816573 A CN 102816573A
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- bridge tube
- raw gas
- downcomer
- vaporizer
- interchanger
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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
A coke-oven single novel bridge pipe raw gas waste-heat recovery device comprises a bridge pipe ascending section and a bridge pipe descending section. A bridge pipe transition section is arranged between the bridge pipe ascending section and the bridge pipe descending section, an evaporator is arranged in the bridge pipe descending section and connected with a steam pocket through a pipeline and is a multilayer evaporator with widened heating areas, a superheater is arranged in the bridge pipe transition section, and a raw gas passage of the bridge pipe descending section is divided through the evaporator into a plurality of independent passages used for circulating raw gas. The heating areas are increased, so that waste-heat recovery rate of the raw gas is increased; and modularized design is adopted, and deformation design is performed to a bridge pipe, so that surrounding processes are unaffected. Consequently, the coke-oven single novel bridge pipe raw gas waste-heat recovery device is simple in structural design, easy to maintain, convenient to wash and capable of effectively recovering the waste heat of the raw gas.
Description
Technical field
The present invention relates to industrial afterheat recovery utilization and technical field, a kind of waste heat of coke oven crude gas retrieving arrangement, the single novel bridge tube raw gas waste-heat recovery device of particularly a kind of coke oven.
Background technology
Coking industry receives much concern as the high energy consumption industry.In the coking by coke oven process, the raw gas temperature in the coke oven coke oven uprising tube contains a large amount of sensible heats up to 750 ℃; Be convenient to follow-up coking process processing for reducing the coal oven dithio-gas temperature; Traditional technology adopts the technology cooling down high-temperature raw gas of spray ammoniacal liquor chilling, directly contacts with raw gas with effuser spray cycle ammoniacal liquor through bridge tube, leans on cyclic ammonia water to gasify in a large number; Make raw gas sharply be cooled to 80-85 ℃, cooling back raw gas is cooled to normal temperature with water coolant more indirectly in primary cooler.The sensible heat of a large amount of raw gas has not only been wasted in this technical process, and consumes a large amount of ammoniacal liquor, wasted great amount of water resources and electric power again, increases sewage discharge.About 750 ℃ the raw gas that coke oven is discharged is because its complicated component, and separating out of component such as tar arranged along with the reduction of temperature, do not have good scheme that it is reclaimed so far.Therefore coal oven dithio-gas sensible heat recovery research is one of focus of coking industry energy-saving and emission-reduction always.
Waste heat of coke oven crude gas recovery at present mainly contains two kinds of patterns and is studying: the one, adopt the upcast device that has function of recovering waste heat; But because its space structure is narrow and small; Vaporizer is arranged and is affected, and can't fully reclaim the raw gas residual heat resources, causes being difficult to promoting; The 2nd, employing is concentrated raw gas and is drawn, and concentrated residual neat recovering system is set in addition.This kind structural pattern is owing to its system complex, the combustibility of raw gas, tar are separated out factors such as coking, and the resistance to air loss of system etc. require very high, and system safety operation receives very big challenge.
Summary of the invention
In order to address the above problem; The present invention provides a kind of coke oven single novel bridge tube raw gas waste-heat recovery device; Comprise bridge tube ascent stage and bridge tube downcomer; Be provided with the bridge tube transition section between said bridge tube ascent stage and the bridge tube downcomer, be provided with vaporizer in the said bridge tube downcomer, said vaporizer adopts the multilayer vaporizer that increases heating surface; Be provided with suphtr in the said bridge tube transition section, bridge tube downcomer raw gas passage is divided into the raw gas autonomous channel of some raw gas that are used to circulate by said multilayer vaporizer;
Raw gas forms the raw gas circulation passage through the raw gas autonomous channel of bridge tube ascent stage, bridge tube transition section, bridge tube downcomer;
Water forms the steam circulation passage through bridge tube downcomer vaporizer, suphtr.
Said multilayer vaporizer comprises the interchanger of upper header, lower collecting box and some vertical settings; Those interchanger are located at respectively between upper header and the lower collecting box; And communicate with both respectively, said lower collecting box is connected with water inlet pipe, interchanger and tube wall noncontact; And interchanger is independently of one another, and interchanger each other and/or be provided for respectively the circulating raw gas autonomous channel of raw gas, between interchanger and the bridge tube wall and/or internal layer interchanger center.
Said those interchanger are annular one of them that is provided with, laterally arranges.
The bridge tube of bridge tube downcomer is provided with downcomer steel pipe external insulation layer, downcomer steel pipe from outside to inside successively, is used for convenient downcomer steel pipe internal wall ceramic coating of cleaning tar.
The top of upper header is provided with spray ammonia point.
The single novel bridge tube raw gas waste-heat recovery device of a kind of coke oven; Comprise bridge tube ascent stage and bridge tube downcomer, be provided with the bridge tube transition section between said bridge tube ascent stage and the bridge tube downcomer, be provided with vaporizer in the said bridge tube downcomer; Said vaporizer adopts the multilayer vaporizer that increases heating surface; Be provided with suphtr in the said bridge tube transition section, vaporizer comprises the many pipelines that are set up in parallel, the raw gas autonomous channel of the raw gas that is formed between noncontact and the tube and tube between the said pipeline circulating;
Raw gas forms the raw gas circulation passage through the raw gas autonomous channel of bridge tube ascent stage, bridge tube transition section, bridge tube downcomer;
Water forms the steam circulation passage through bridge tube downcomer vaporizer, drum, suphtr.
The object of the invention is keeping under the constant prerequisite of coke oven coke oven uprising tube, effuser and main technique; The bridge tube that coke oven is connected upcast and effuser carries out deformation design, and bridge tube is transformed into bridge tube ascent stage, bridge tube transition section and bridge tube downcomer, makes full use of the upper space of coke oven; The design of conjugative bridge tubular construction increases the multilayer interchanger in the downcomer of bridge tube; Increase the raw gas waste-heat recovery device,, be provided with ceramic coating at the inwall of bridge tube downcomer with abundant recovery raw gas waste heat; And interchanger is arranged on the downcomer of bridge tube, the tar that can effectively solve in the waste heat recovery process is separated out problem.Simultaneously, also can reduce consumption of original system ammoniacal liquor and subsystem power consumption, realize the coke oven energy-saving and emission-reduction.
The invention has the advantages that:
1. at the bridge tube place waste-heat recovery device is set, has made full use of the space on coke oven top;
2. set up main heating surface in downcomer, the cleaning after being convenient to tar and separating out;
3. adopt single novel bridge tube raw gas waste-heat recovery device independent design, be convenient to the renewal and the maintenance of equipment, reducing as far as possible influences the coke oven original system;
4. adopt the multilayer design of heat exchanger, between downcomer tube wall and the outer heating surface, between the two-layer interchanger, internal layer heating surface inside all forms the raw gas passage, is convenient to abundant heat exchange;
5. the bridge tube inwall adopts the pottery design, reduces the adhesion of separating out tar;
6. the ammoniacal liquor spray point is set, separates out degree in conjunction with tar and take appropriate frequency to clean.
The present invention brings following beneficial effect:
1. the space that waste-heat recovery device has not only made full use of coke oven top is set at the bridge tube place, and combines upper space suitably to increase heating surface with abundant as far as possible recovery waste heat;
2. main heating surface is arranged in the cleaning after the bridge tube downcomer is convenient to tar and is separated out, and avoids or slows down because of the raw gas temperature reduces back tar and separate out and cause the heating surface exchange capability of heat to descend even lost efficacy;
3. single novel bridge tube raw gas waste-heat recovery device independent design is convenient to the renewal and the maintenance of equipment, and reducing as far as possible influences the coke oven original system;
4. because the raw gas temperature descends,, reduce the power consumption of ammoniacal liquor subsystem simultaneously to the ammoniacal liquor slump in demand;
5. can obviously reduce the coke oven process energy consumption through recovery waste heat, save energy reduces discharging, produces good economic and social benefit.
The present invention has not only increased heating surface, improves the waste heat of coke oven crude gas recovery; And through adopting modular design, except bridge tube has been carried out deformation design, peripheral technology is all unaffected, structure design simply, safeguard easily, be convenient to clean, can efficient recovery raw gas waste heat.
Description of drawings
Fig. 1 is the single novel bridge tube raw gas waste-heat recovery device structure design synoptic diagram of coke oven of the present invention;
Fig. 2 is the single novel bridge tube raw gas waste-heat recovery device A-A diagrammatic cross-section of coke oven of the present invention;
Fig. 3 is a bridge tube downcomer local structure synoptic diagram of the present invention;
Fig. 4 is another synoptic diagram of interchanger of the present invention.
Embodiment
Further specify the present invention with reference to the accompanying drawings.
The single novel bridge tube raw gas waste-heat recovery device of a kind of coke oven; Comprise bridge tube ascent stage 2 and bridge tube downcomer 4, be provided with bridge tube transition section 3 between said bridge tube ascent stage 2 and the bridge tube downcomer 4, the two ends of said bridge tube downcomer 4 are respectively equipped with upper header 5 and lower collecting box 6; Vertically can be provided with some interchanger 7 between said upper header 5 and the lower collecting box 6; Said lower collecting box 6 is connected with water inlet pipe 61, and upper header 5 is connected with drum 8 through pipeline 51, is provided with suphtr 9 in the said bridge tube transition section 3; Suphtr inlet 91 is connected with drum 8, and suphtr exports 92 connection user sides.
From the crosscut section, said bridge tube downcomer 4 is provided with downcomer steel pipe external insulation layer 41, downcomer steel pipe 42, downcomer steel pipe internal wall ceramic coating 43 from outside to inside successively.
The top of said upper header is provided with spray ammonia point 52.
Embodiment 1
Consult accompanying drawing 3; The interchanger 7 of present embodiment is that double-deck annular is provided with, and interchanger 7 is respectively equipped with internal layer interchanger 71 and outer interchanger 72, and internal layer interchanger 71 is communicated with upper header 5 and lower collecting box 6 respectively with outer interchanger 72; Internal layer interchanger 71 and outer interchanger 72 are located at the middle part of bridge tube downcomer 4; Do not contact with tube wall, therefore, form three annular raw gas autonomous channels 44 between tube wall, internal layer interchanger 71 and outer interchanger 72 threes.
Upcast 1, bridge tube ascent stage 2, bridge tube transition section 3 and bridge tube downcomer 4 are connected successively, and upper header 5 is connected with drum 8 through pipeline 51, is provided with suphtr 9 in the bridge tube transition section 3, and suphtr inlet 91 is connected with drum 8, and suphtr exports 92 connection user sides.
De-mineralized water gets into lower collecting box by water inlet pipe 61, rises in the upper header 5 from internal layer interchanger 71 and outer interchanger 72 respectively from lower collecting box 6, and de-mineralized water gets into the process of upper header 5 from lower collecting box 6; Because vaporizer is provided with inside and outside two-layer interchanger, form three annular raw gas autonomous channels 44 between internal layer interchanger 71 and outer interchanger 72 and the tube wall, raw gas passes through from three annular raw gas autonomous channels 44; De-mineralized water fills a part heat exchange with raw gas in the bridge tube downcomer, form steam water interface after the de-mineralized water heat exchange, and steam water interface gets into drum 8 through pipeline 51; Steam water interface carries out carbonated drink separation in drum 8, the saturation steam after the separation gets in the suphtr 9 from suphtr inlet 91, because the raw gas temperature in the bridge tube transition section 3 is higher; Saturation steam in high temperature raw gas and the suphtr 9 carries out heat exchange again; Become high-quality superheated vapour after the saturation steam heat exchange, superheated vapour is passed to user side from suphtr outlet 92, and de-mineralized water is through twice heat exchange of bridge tube downcomer and bridge tube transition section; And; Vaporizer is provided with internal layer interchanger and outer interchanger, raw gas and internal layer interchanger and the abundant heat exchange of outer interchanger in the bridge tube downcomer, fill part absorption the heat of raw gas; And raw gas gets into the bridge tube ascent stage 2 from upcast 1; Carry out heat exchange with saturation steam and de-mineralized water respectively during then through bridge tube transition section 3 and bridge tube downcomer 4, the temperature of raw gas also progressively reduces, and the raw gas after the cooling gets into effusers from bridge tube raw gas outlet 11; The raw gas waste heat is absorbed and used; The top of the upper header 5 spray ammonia point 52 that also distributing is convenient to clean the tar on tube wall and the interchanger, and the tar after the cleaning flows into effuser and carries out conventional processing.
Embodiment 2
Consult accompanying drawing 4, the interchanger 7 of present embodiment is the many pipelines that are set up in parallel, the 4 row superheater tubes 73 of interchanger 7 for laterally arranging; Superheater tube 73 is communicated with lower collecting box 6 with upper header 5 respectively and does not contact with tube wall; Therefore, every adjacent two row's superheater tubes 73 have just formed raw gas passage 45 between between superheater tube 73 and the tube wall; After raw gas gets into bridge tube downcomer 4 from bridge tube transition section 3; Raw gas gets into bridge tube raw gas outlet 11 from raw gas passage 45, and the de-mineralized water of raw gas in raw gas passage 45 and in the superheater tube 73 fills a part heat exchange, other steps and embodiment 1 identical just no longer narration.
The above-mentioned disclosed specific embodiment of the present invention that is merely, this embodiment only is that clearer explanation the present invention is used, and is not to qualification of the present invention, any those skilled in the art can think variation, all should drop in the protection domain.
Claims (7)
1. single novel bridge tube raw gas waste-heat recovery device of coke oven; It is characterized in that, comprise bridge tube ascent stage and bridge tube downcomer, be provided with the bridge tube transition section between said bridge tube ascent stage and the bridge tube downcomer; Be provided with suphtr in the said bridge tube transition section; Be provided with vaporizer in the said bridge tube downcomer, said vaporizer adopts the multilayer vaporizer that increases heating surface, and said bridge tube downcomer raw gas passage is divided into the raw gas autonomous channel of some raw gas that are used to circulate by said multilayer vaporizer;
Raw gas forms the raw gas circulation passage through the raw gas autonomous channel of bridge tube ascent stage, bridge tube transition section, bridge tube downcomer;
Water forms the steam circulation passage through bridge tube downcomer vaporizer, suphtr.
2. the single novel bridge tube raw gas waste-heat recovery device of coke oven as claimed in claim 1; It is characterized in that; Said multilayer vaporizer comprises the interchanger of upper header, lower collecting box and some vertical settings, and those interchanger are located at respectively between upper header and the lower collecting box, and communicates with both respectively; Said lower collecting box is connected with water inlet pipe; Interchanger and tube wall noncontact, and interchanger is independently of one another, interchanger are each other and/or be provided for respectively the circulating raw gas autonomous channel of raw gas, between interchanger and the bridge tube wall and/or internal layer interchanger center.
3. the single novel bridge tube raw gas waste-heat recovery device of coke oven as claimed in claim 2 is characterized in that, said those interchanger are annular one of them that is provided with, laterally arranges.
4. the single novel bridge tube raw gas waste-heat recovery device of coke oven as claimed in claim 2; It is characterized in that the bridge tube of bridge tube downcomer is provided with downcomer steel pipe external insulation layer, downcomer steel pipe from outside to inside successively, is used for convenient downcomer steel pipe internal wall ceramic coating of cleaning tar.
5. the single novel bridge tube raw gas waste-heat recovery device of coke oven as claimed in claim 1 is characterized in that, the top of upper header is provided with spray ammonia point.
6. the single novel bridge tube raw gas waste-heat recovery device of coke oven as claimed in claim 1 is characterized in that also comprise drum, said drum links to each other with said suphtr, and said vaporizer is connected with said drum through pipeline.
7. single novel bridge tube raw gas waste-heat recovery device of coke oven; It is characterized in that; Comprise bridge tube ascent stage and bridge tube downcomer, be provided with the bridge tube transition section between said bridge tube ascent stage and the bridge tube downcomer, be provided with vaporizer in the said bridge tube downcomer; Said vaporizer adopts the multilayer vaporizer that increases heating surface; Be provided with suphtr in the said bridge tube transition section, vaporizer comprises the many pipelines that are set up in parallel, the raw gas autonomous channel of the raw gas that is formed between noncontact and the tube and tube between the said pipeline circulating;
Raw gas forms the raw gas circulation passage through the raw gas autonomous channel of bridge tube ascent stage, bridge tube transition section, bridge tube downcomer;
Water forms the steam circulation passage through bridge tube downcomer vaporizer, suphtr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210317968.8A CN102816573B (en) | 2012-08-31 | 2012-08-31 | Coke-oven single novel bridge pipe raw gas waste-heat recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210317968.8A CN102816573B (en) | 2012-08-31 | 2012-08-31 | Coke-oven single novel bridge pipe raw gas waste-heat recovery device |
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| CN102816573A true CN102816573A (en) | 2012-12-12 |
| CN102816573B CN102816573B (en) | 2014-04-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242866A (en) * | 2013-05-17 | 2013-08-14 | 北京中衡国通能源科技有限责任公司 | Heat recovery device for raw coke oven gas |
| CN104726110A (en) * | 2015-03-26 | 2015-06-24 | 常州江南冶金科技有限公司 | Coke oven three-way bridge pipeline heat exchanger device |
| CN106839808A (en) * | 2017-03-14 | 2017-06-13 | 中冶华天工程技术有限公司 | Raw coke oven gas waste heat high/low temperature comprehensive recovery system and method |
| CN107325847A (en) * | 2017-08-04 | 2017-11-07 | 浙江大学 | A kind of cooling of gas of high temperature pyrolysis and gasification containing tar and exhaust heat recovering method and device |
| CN107367171A (en) * | 2017-07-11 | 2017-11-21 | 南京华电节能环保设备有限公司 | A kind of anticorrosion anti-coking coke oven flue waste gas residual heat reclaims bridge tube |
| CN113091481A (en) * | 2021-04-15 | 2021-07-09 | 唐山市宝凯科技有限公司 | Device and method for recovering waste heat of crude gas of bridge pipe |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242866A (en) * | 2013-05-17 | 2013-08-14 | 北京中衡国通能源科技有限责任公司 | Heat recovery device for raw coke oven gas |
| CN103242866B (en) * | 2013-05-17 | 2015-01-14 | 北京中衡国通能源科技有限责任公司 | Heat recovery device for raw coke oven gas |
| CN104726110A (en) * | 2015-03-26 | 2015-06-24 | 常州江南冶金科技有限公司 | Coke oven three-way bridge pipeline heat exchanger device |
| CN106839808A (en) * | 2017-03-14 | 2017-06-13 | 中冶华天工程技术有限公司 | Raw coke oven gas waste heat high/low temperature comprehensive recovery system and method |
| CN106839808B (en) * | 2017-03-14 | 2022-12-06 | 中冶华天工程技术有限公司 | High-low temperature comprehensive recovery system and method for waste heat of raw gas |
| CN107367171A (en) * | 2017-07-11 | 2017-11-21 | 南京华电节能环保设备有限公司 | A kind of anticorrosion anti-coking coke oven flue waste gas residual heat reclaims bridge tube |
| CN107325847A (en) * | 2017-08-04 | 2017-11-07 | 浙江大学 | A kind of cooling of gas of high temperature pyrolysis and gasification containing tar and exhaust heat recovering method and device |
| CN113091481A (en) * | 2021-04-15 | 2021-07-09 | 唐山市宝凯科技有限公司 | Device and method for recovering waste heat of crude gas of bridge pipe |
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| Publication number | Publication date |
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| CN102816573B (en) | 2014-04-30 |
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