CN102925165A - Afterheat recovery system for raw coke oven gas of coke oven ascension pipe - Google Patents
Afterheat recovery system for raw coke oven gas of coke oven ascension pipe Download PDFInfo
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- CN102925165A CN102925165A CN2012104579512A CN201210457951A CN102925165A CN 102925165 A CN102925165 A CN 102925165A CN 2012104579512 A CN2012104579512 A CN 2012104579512A CN 201210457951 A CN201210457951 A CN 201210457951A CN 102925165 A CN102925165 A CN 102925165A
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Abstract
The invention relates to an afterheat recovery system for raw coke oven gas of a coke oven ascension pipe. The afterheat recovery system consists of an ascension pipe heat exchanger, a main gas collecting pipe and a water/steam heat exchanger; a gas inlet of the ascension pipe heat exchanger is connected with a working medium gas outlet of the coke oven; a hot gas outlet of the ascension pipe heat exchanger is connected with the main gas collecting pipe; and the main gas collecting pipe is connected with the water/steam heat exchanger and is used for generating steam or hot water. According to the afterheat recovery system, more than 50% of afterheat of the raw coke oven gas can be effectively recovered by the ascension pipe heat exchanger under the premise that the safety of the coke oven in running is ensured and other technical requirements of the raw coke oven gas are not influenced, the volume of used ammonia water which is used for cooling the raw coke oven gas is reduced, and the toxic and harmful waste produced in the raw coke oven gas purifying technical process can be reduced as well.
Description
Technical field
The present invention relates to a kind ofly for coke oven coke oven uprising tube raw gas residual neat recovering system, especially a kind of employing nitrogen or (air) are as the coke oven coke oven uprising tube raw gas waste heat recycling system 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.650 ℃～700 ℃ raw gas of wherein, overflowing through upcast from coking chamber are taken heat out of and are accounted for 36% of coke oven output total heat.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, takes heat out of as reclaiming raw gas with technology such as thermal oil jacket pipe, heat pipe, boiler, semiconductor temperature differential generating and jacket pipes.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 waste 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 waste heat recycling system, this system is guaranteeing the coke oven safe operation and is not affecting under the prerequisite of other processing requirements of raw gas, utilize 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 of for coke oven coke oven uprising tube raw gas waste heat recycling system, formed by upcast interchanger, main effuser, water/vapour interchanger, be characterized in: upcast interchanger inlet mouth connects the Working medium gas outlet of coke oven, the hot gas outlet of upcast interchanger connects main effuser, main effuser connects water/vapour interchanger, for generation of steam or hot water.
Slumpability gas in the return flow line of upcast interchanger.
The inwall bottom of upcast interchanger arranges a tar delivery line, is used for preventing from being back to coke oven coke oven uprising tube bottom and coke oven junction from the tar that raw gas is separated out, and forms graphite so that coke-oven gas is analysed the exit coking.
The invention has the beneficial effects as follows:
The present invention compares with the coke oven coke oven uprising tube raw gas waste heat recycling system (device) of other form, is fit to the heat recovery of coking process raw gas, and safety in operation is high.The scantlings of the structure of upcast interchanger can be identical with original upcast contour structure size, is convenient to repair and replacement; And it is more reasonable that its heating surface area is arranged, in farthest utilizing, the raw gas high temperature section establishes the upcast interchanger heating surface of multiply spiral return flow line, improve the heat transfer effect between raw gas and air or (nitrogen), air or (nitrogen) can obtain the heat of raw gas effectively, can can control by changing air or (nitrogen) 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.Adopt gas as the medium of heat exchanger, can guarantee the safe operation of coke oven in the state of accident, if adopt nitrogen also to can be used as the additional flue gas of dry coke quenching residual heat boiler as heat-transfer medium, can improve the operational efficiency of dry coke quenching residual heat boiler and exert oneself.
Description of drawings
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is upcast heat exchanger structure front view;
Fig. 3 is along the sectional view of A-A among Fig. 2;
Fig. 4 is along the sectional view of B-B among Fig. 2.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, of the present invention for coke oven coke oven uprising tube raw gas waste heat recycling system, comprise upcast interchanger 1, main effuser 2, water/vapour interchanger 3 etc.
Upcast interchanger 1 inlet mouth connects the Working medium gas outlet of coke oven, and the hot gas outlet of upcast interchanger 1 connects main effuser 2, and main effuser 2 connects water/vapour interchanger 3, for generation of steam or hot water.
Such as Fig. 2, shown in 3,4, upcast interchanger 1 is made of inside and outside sleeve pipe 5,4, establishes multiply spiral return flow line 6 between the inside and outside sleeve pipe 5,4, and the header of confluxing is respectively established at inside and outside sleeve pipe 5,4 two ends.Slumpability gas in the multiply spiral return flow line 6 of the inside and outside sleeve pipe of upcast interchanger.The inner sleeve 5 inwalls bottom of upcast interchanger arranges a tar delivery line 7, is used for preventing from being back to coke oven coke oven uprising tube bottom and coke oven junction from the tar that raw gas is separated out, and forms graphite so that coke-oven gas is analysed the exit coking.
The present invention utilizes raw gas in the coke oven by the upcast interchanger of oven top of coke oven, the heat transferred of raw gas is established fluidizing air or rare gas element (nitrogen) in the multiply spiral return flow line in the upcast heat exchange jackets, the air after being heated (nitrogen) confluxes by the top of upcast interchanger and flow into main effuser after the header.Main effuser pools together the warm air (or nitrogen) that a plurality of upcast interchanger of coke oven produce, and produces little overheated saturation water or superheated vapour by fin pipe type water/vapour interchanger, and for the production of technique or life, perhaps superheated vapour is used for generating.
Claims (3)
1. one kind is used for coke oven coke oven uprising tube raw gas waste heat recycling system, formed by upcast interchanger (1), main effuser (2), water/vapour interchanger (3), it is characterized in that: described upcast interchanger (1) inlet mouth connects the Working medium gas outlet of coke oven, the hot gas outlet of upcast interchanger (1) connects main effuser (2), main effuser (2) connects water/vapour interchanger (3), for generation of steam or hot water.
2. according to claim 1ly it is characterized in that slumpability gas in the return flow line (6) of described upcast interchanger (1) for coke oven coke oven uprising tube raw gas waste heat recycling system.
3. according to claim 1 for coke oven coke oven uprising tube raw gas waste heat recycling system, it is characterized in that, described upcast interchanger (1) inwall bottom arranges a tar delivery line (7), be used for preventing from being back to coke oven coke oven uprising tube bottom and coke oven junction from the tar that raw gas is separated out, form graphite so that coke-oven gas is analysed the exit coking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104579512A CN102925165A (en) | 2012-11-15 | 2012-11-15 | Afterheat recovery system for raw coke oven gas of coke oven ascension pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104579512A CN102925165A (en) | 2012-11-15 | 2012-11-15 | Afterheat recovery system for raw coke oven gas of coke oven ascension pipe |
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| CN102925165A true CN102925165A (en) | 2013-02-13 |
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| CN2012104579512A Pending CN102925165A (en) | 2012-11-15 | 2012-11-15 | Afterheat recovery system for raw coke oven gas of coke oven ascension pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010590A (en) * | 2016-06-16 | 2016-10-12 | 南京华电节能环保设备有限公司 | Coke oven ascension pipe waste heat recovery device |
| CN106398724A (en) * | 2016-11-25 | 2017-02-15 | 中冶华天工程技术有限公司 | Waste heat recovery device for ascending pipe of coke oven |
| CN106978197A (en) * | 2017-04-28 | 2017-07-25 | 李永智 | The device of coke oven stay shell boiler outlet manifold washing heat exchange raw coke oven gas and application |
| CN112179157A (en) * | 2020-10-09 | 2021-01-05 | 内蒙古万众炜业科技环保股份公司 | Coking furnace waste heat full utilization system for preventing graphite from being formed by tar |
| CN114836223A (en) * | 2022-05-13 | 2022-08-02 | 安徽工业大学 | Coke oven riser waste heat recovery system |
| 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 |
| CN115895689A (en) * | 2022-08-23 | 2023-04-04 | 中冶赛迪信息技术(重庆)有限公司 | System and process for efficiently recovering waste heat of crude gas riser and application of system and process |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010590A (en) * | 2016-06-16 | 2016-10-12 | 南京华电节能环保设备有限公司 | Coke oven ascension pipe waste heat recovery device |
| CN106398724A (en) * | 2016-11-25 | 2017-02-15 | 中冶华天工程技术有限公司 | Waste heat recovery device for ascending pipe of coke oven |
| CN106978197A (en) * | 2017-04-28 | 2017-07-25 | 李永智 | The device of coke oven stay shell boiler outlet manifold washing heat exchange raw coke oven gas and application |
| CN106978197B (en) * | 2017-04-28 | 2019-10-25 | 李永智 | The device of coke oven stay shell boiler outlet manifold washing heat exchange raw coke oven gas and application |
| CN112179157A (en) * | 2020-10-09 | 2021-01-05 | 内蒙古万众炜业科技环保股份公司 | Coking furnace waste heat full utilization system for preventing graphite from being formed by tar |
| CN112179157B (en) * | 2020-10-09 | 2022-07-12 | 内蒙古万众炜业科技环保股份公司 | Coking furnace waste heat full utilization system for preventing graphite from being formed by tar |
| CN114836223A (en) * | 2022-05-13 | 2022-08-02 | 安徽工业大学 | Coke oven riser waste heat recovery system |
| 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 |
| CN115895689A (en) * | 2022-08-23 | 2023-04-04 | 中冶赛迪信息技术(重庆)有限公司 | System and process for efficiently recovering waste heat of crude gas riser and application of system and process |
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Application publication date: 20130213 |