CN102899057A - Heat exchanger for recovering waste heat of raw gas of ascension pipe of coke oven - Google Patents
Heat exchanger for recovering waste heat of raw gas of ascension pipe of coke oven Download PDFInfo
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- CN102899057A CN102899057A CN2012104579211A CN201210457921A CN102899057A CN 102899057 A CN102899057 A CN 102899057A CN 2012104579211 A CN2012104579211 A CN 2012104579211A CN 201210457921 A CN201210457921 A CN 201210457921A CN 102899057 A CN102899057 A CN 102899057A
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- coke oven
- heat
- heat exchanger
- sleeve pipe
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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 heat exchanger for recovering waste heat of raw gas of an ascension pipe of a coke oven. The heat exchanger consists of an inner sleeve and an outer sleeve, and is characterized in that a plurality of helical return passages are formed between the inner sleeve and the outer sleeve, and a convergent flow collection box is arranged on each of two ends of each of the inner sleeve and the outer sleeve. Compared with other forms of heat exchangers for recovering the waste heat of the raw gas of the ascension pipe of the coke oven, the heat exchanger provided by the invention adapts to changes of working conditions of the raw gas in the coking process, the structure with a plurality of helical return passages of a heating surface of the heat exchanger improves the heat exchanging effect, and the heating area of the heat exchanger is reasonably arranged, so that the heat exchanging effect between the raw gas at a high-temperature section and nitrogen (air) is improved; and the nitrogen (air) can effectively obtain the heat of the raw gas, and the outlet temperature of the raw gas can be controlled by changing the flow of the nitrogen (air), so that in the state of sharp drop of temperature, tar in the raw gas is prevented from being dissolved out, pipe walls of the ascension pipe are prevented from being coked, and the safe operation of the coke oven is prevented from being influenced.
Description
Technical field
The present invention relates to a kind of coking process waste-heat recovery device, especially a kind of employing nitrogen or (air) are as the coke oven coke oven uprising tube raw gas heat recovery heat exchanger of heat-eliminating medium.
Background technology
The high efficiente callback utilization of the residual heat resources that produce in the coke making process flow process is to set up resources conservation, the energy-conservation main direction in eco-friendly green coke-oven plant, also is one of main path that reduces the coke oven energy consumption.But China utilizes support technology and equipment to lag behind to the excavation of secondary energy quality potentiality, exploitation and the low-quality residual heat and energy of value, and for example 250～300 ℃ residual heat resources not yet effectively utilize.
At present iron and steel enterprise still has 30% waste heat, complementary energy not to be recovered utilization, and wherein, coking has 50 kg/ton burnt approximately.Take heat from coking chamber out of through 650 ℃～700 ℃ raw gas of upcast effusion and account for coke oven total heat 36%.For the raw gas of cooling down high-temperature must spray a large amount of 70 ℃～75 ℃ cyclic ammonia waters, the high temperature raw gas is cooled to 22 ℃～35 ℃ through primary cooler again because a large amount of evaporations of cyclic ammonia water are cooled to 82 ℃～85 ℃, and raw gas is taken heat out of and is wasted.The at present waste heat recovery of raw gas also is in development, as with technology such as thermal oil jacket pipe, heat pipe, boiler, semiconductor temperature differential generating and jacket pipes, reclaims raw gas and takes heat out of.But some method and mode also do not reach industrial production and use.
Summary of the invention
The present invention is the technical problem that will solve the heat recovery of the raw gas that existing carbonizing chamber of coke oven overflows by upcast, and provide a kind of coke oven coke oven uprising tube raw gas heat recovery heat exchanger, this upcast interchanger is guaranteeing the coke oven safe operation and is not affecting under the prerequisite of other processing requirements of raw gas, the waste heat amount more than 50% of upcast interchanger energy efficient recovery raw gas, and reduced the ammonia volume that is used for the raw gas desuperheat, also reduced the poisonous and harmful waste water that produces in the raw gas purification process flow process simultaneously.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind ofly be comprised of inside and outside sleeve pipe for coke oven coke oven uprising tube raw gas heat recovery heat exchanger, be characterized in: be provided with multiply spiral return flow line between the inside and outside sleeve pipe, the header of confluxing is respectively established at inside and outside sleeve pipe two ends.
Inner sleeve inwall bottom arranges two cross-helicity tar and derives groove, be used for preventing from being back to coke oven coke oven uprising tube low side and coke oven junction from the tar that raw gas is separated out, be subject under pipe surface temperature and the effect of high temperature raw gas, form graphite so that coke-oven gas is analysed the exit coking.Slumpability gas in the multiply spiral return flow line of inside and outside sleeve pipe.
The invention has the beneficial effects as follows:
The present invention compares with the coke oven coke oven uprising tube raw gas heat recovery heat exchanger of other form, be fit to coking process raw gas working conditions change, the multiply spiral return flow line structural shape of its heating surface has the enhanced heat exchange effect and the heating surface area layout is more reasonable, improved the heat transfer effect between high temperature section raw gas and the nitrogen (air), nitrogen (air) can obtain the heat of raw gas effectively, can can control by changing nitrogen (air) flow simultaneously the temperature out of raw gas, avoided raw gas under the state of reduces heat, coal-tar middle oil the separating out of raw gas caused the coking of upcast tube wall, affects the coke oven safe operation.The present invention is used for recovery and takes heat from coke furnace carbonization chamber out of through 650 ℃～700 ℃ raw gas of upcast effusion, and this part heat occupies 36% of coke oven total heat input.
Description of drawings
Fig. 1 is structural front view of the present invention;
Fig. 2 is along the sectional view of A-A among Fig. 1;
Fig. 3 is along the sectional view of B-B among Fig. 1.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1 to Figure 3, of the present invention for coke oven coke oven uprising tube raw gas heat recovery heat exchanger, formed by inside and outside sleeve pipe 2,1.
Be provided with multiply spiral return flow line 3 between the inside and outside sleeve pipe 2,1, the header of confluxing is respectively established at inside and outside sleeve pipe 2,1 two ends.
The cooling gas that the present invention adopts is rare gas element (nitrogen) or air, and its scantlings of the structure is consistent with residing former coke oven coke oven uprising tube size, and original coke oven construction is not changed, and is convenient to install.
The structure formation of upcast interchanger of the present invention and the heat-eliminating medium of employing at home also the someone adopt.
Raw gas is when being arranged on the upcast interchanger of oven top of coke oven in the coke oven, the heat transferred of raw gas slumpability gas (nitrogen) or air in the multiply spiral return flow line in the upcast heat exchange jackets, the nitrogen after being heated or (air) conflux by the top of upcast interchanger and flow into main effuser after the header.
Claims (3)
1. one kind is used for coke oven coke oven uprising tube raw gas heat recovery heat exchanger, is comprised of inside and outside sleeve pipe (2,1), it is characterized in that: described inside and outside sleeve pipe (2,1) be provided with multiply spiral return flow line (3) between, the header of confluxing is respectively established at inside and outside sleeve pipe (2,1) two ends.
2. according to claim 1 for coke oven coke oven uprising tube raw gas heat recovery heat exchanger, it is characterized in that: described inner sleeve (2) inwall bottom arranges two cross-helicity tar and derives groove (4), be used for preventing from being back to coke oven coke oven uprising tube low side and coke oven junction from the tar that raw gas is separated out, be subject under pipe surface temperature and the effect of high temperature raw gas, form graphite so that coke-oven gas is analysed the exit coking.
3. according to claim 1 for coke oven coke oven uprising tube raw gas heat recovery heat exchanger, it is characterized in that: slumpability gas in the multiply spiral return flow line (3) of described inside and outside sleeve pipe (2,1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104579211A CN102899057A (en) | 2012-11-15 | 2012-11-15 | Heat exchanger for recovering waste heat of raw gas of ascension pipe of coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104579211A CN102899057A (en) | 2012-11-15 | 2012-11-15 | Heat exchanger for recovering waste heat of raw gas of ascension pipe of coke oven |
Publications (1)
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| CN102899057A true CN102899057A (en) | 2013-01-30 |
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| CN2012104579211A Pending CN102899057A (en) | 2012-11-15 | 2012-11-15 | Heat exchanger for recovering waste heat of raw gas of ascension pipe of coke oven |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411437A (en) * | 2013-08-15 | 2013-11-27 | 陕西胜慧源信息科技有限公司 | Conical high temperature tail gas waste heat recovery pipe with spiral passages |
| CN103486866A (en) * | 2013-08-13 | 2014-01-01 | 陕西胜慧源信息科技有限公司 | High-temperature tail gas waste heat recovery tube provided with spiral channels |
| CN106047376A (en) * | 2016-07-14 | 2016-10-26 | 河北工程大学 | High-temperature-resistant corrosion-resistant snakelike spiral heat exchanger of coke oven ascending pipe |
| CN107029512A (en) * | 2017-05-11 | 2017-08-11 | 洛阳千百度窑炉科技有限公司 | The smoke and dust eliminating method and equipment of white cigarette gas |
| CN111303909A (en) * | 2020-03-27 | 2020-06-19 | 武汉方特工业设备技术有限公司 | Coke oven ascending tube heat exchanger with variable heat exchange area |
| CN113429989A (en) * | 2021-07-01 | 2021-09-24 | 中冶焦耐(大连)工程技术有限公司 | Method for preventing or reducing coking of inner wall of ascending pipe of coke oven |
| CN114933912A (en) * | 2022-06-24 | 2022-08-23 | 山东天景工程设计有限公司 | Device for reducing bias current in heat exchanger utilizing waste heat of coke oven crude gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317986A1 (en) * | 1983-05-18 | 1984-11-22 | kabelmetal electro GmbH, 3000 Hannover | Tubular heat exchanger for recovering heat energy from exhaust gases |
| CN2595808Y (en) * | 2002-08-28 | 2003-12-31 | 王登富 | Ascending pipe after heat recorering device for coke furnace gas |
| CN201983243U (en) * | 2010-12-20 | 2011-09-21 | 武汉钢铁(集团)公司 | Coil pipe variable diameter type waste heat utilization apparatus for ascending pipe of coke oven |
| CN202881180U (en) * | 2012-11-15 | 2013-04-17 | 上海理工大学 | Heat exchanger of crude gas waste heat recovery used for coke oven ascension pipe |
-
2012
- 2012-11-15 CN CN2012104579211A patent/CN102899057A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317986A1 (en) * | 1983-05-18 | 1984-11-22 | kabelmetal electro GmbH, 3000 Hannover | Tubular heat exchanger for recovering heat energy from exhaust gases |
| CN2595808Y (en) * | 2002-08-28 | 2003-12-31 | 王登富 | Ascending pipe after heat recorering device for coke furnace gas |
| CN201983243U (en) * | 2010-12-20 | 2011-09-21 | 武汉钢铁(集团)公司 | Coil pipe variable diameter type waste heat utilization apparatus for ascending pipe of coke oven |
| CN202881180U (en) * | 2012-11-15 | 2013-04-17 | 上海理工大学 | Heat exchanger of crude gas waste heat recovery used for coke oven ascension pipe |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486866A (en) * | 2013-08-13 | 2014-01-01 | 陕西胜慧源信息科技有限公司 | High-temperature tail gas waste heat recovery tube provided with spiral channels |
| CN103411437A (en) * | 2013-08-15 | 2013-11-27 | 陕西胜慧源信息科技有限公司 | Conical high temperature tail gas waste heat recovery pipe with spiral passages |
| CN106047376A (en) * | 2016-07-14 | 2016-10-26 | 河北工程大学 | High-temperature-resistant corrosion-resistant snakelike spiral heat exchanger of coke oven ascending pipe |
| CN107029512A (en) * | 2017-05-11 | 2017-08-11 | 洛阳千百度窑炉科技有限公司 | The smoke and dust eliminating method and equipment of white cigarette gas |
| CN111303909A (en) * | 2020-03-27 | 2020-06-19 | 武汉方特工业设备技术有限公司 | Coke oven ascending tube heat exchanger with variable heat exchange area |
| CN113429989A (en) * | 2021-07-01 | 2021-09-24 | 中冶焦耐(大连)工程技术有限公司 | Method for preventing or reducing coking of inner wall of ascending pipe of coke oven |
| CN113429989B (en) * | 2021-07-01 | 2024-01-26 | 中冶焦耐(大连)工程技术有限公司 | Method for preventing or reducing coking on inner wall of coke oven riser |
| CN114933912A (en) * | 2022-06-24 | 2022-08-23 | 山东天景工程设计有限公司 | Device for reducing bias current in heat exchanger utilizing waste heat of coke oven crude gas |
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Application publication date: 20130130 |