CN103320149A - Coke oven ascension pipe crude gas waste heat recycling system - Google Patents
Coke oven ascension pipe crude gas waste heat recycling system Download PDFInfo
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- CN103320149A CN103320149A CN2013101972294A CN201310197229A CN103320149A CN 103320149 A CN103320149 A CN 103320149A CN 2013101972294 A CN2013101972294 A CN 2013101972294A CN 201310197229 A CN201310197229 A CN 201310197229A CN 103320149 A CN103320149 A CN 103320149A
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- coke oven
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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 discloses a coke oven ascension pipe crude gas waste heat recycling system. The waste heat recycling system comprises an ascension pipe heat exchanger. The ascension pipe heat exchanger comprises an outer sleeve, and the inner wall of the outer sleeve is connected with an inner sleeve to form a double-sleeve structure. A center pipe is disposed in the center of the inner sleeve. A diffluence and confluence channel is disposed at the bottom of the outer sleeve, the inner sleeve and the center pipe. The inner wall of the inner sleeve and the outer wall of the center pipe are respectively provided with a heating surface. The connecting portion at the top of the outer sleeve and the inner sleeve is provided with a bellows baffling area. The top of the center pipe is provided with a center pipe baffling area. The outer sleeve, the inner sleeve and the center pipe are respectively provided with a spiral backflow channel. On the premise that a coke oven is safely operated and other technology requirements for the crude gas can be met, more than 60% of the crude gas can be recycled by the ascension pipe heat exchanger effectively, the amount of ammonia for cooling the crude gas is reduced, and the amount of poisonous and harmful waste water in the crude gas purifying process is reduced.
Description
Technical field
The present invention relates to the raw gas waste-heat recovery device that overflows in a kind of coke making process process, especially relate to a kind of coke oven coke oven uprising tube raw gas residual neat recovering system.
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 lags behind with the equipment exploitation to the excavation of secondary energy quality potentiality, exploitation and the low-quality waste heat surplus energy utility support technology of value, and for example 250～300 ℃ residual heat resources are still utilized not yet in effectly.
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 Jiao 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 wasted.The waste heat recovery of raw gas at present 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, does not use but some method and mode also reach industrial production.
Summary of the invention
The present invention is in order to solve the problem that raw gas is taken out of in the present coke making process process waste heat is wasted, a kind of coke oven coke oven uprising tube raw gas residual neat recovering system is provided for this reason, be used for reclaiming from coke furnace carbonization chamber and take heat out of through 650 ℃～700 ℃ raw gas of upcast effusion, this part heat occupies 36% of coke oven total heat input.
A kind of coke oven coke oven uprising tube raw gas residual neat recovering system, comprise the upcast interchanger, described upcast interchanger comprises outer sleeve 2, the inwall of described outer sleeve 2 is connected with inner sleeve 3, form double-sleeve structure, the center of described inner sleeve 3 is provided with pipe core 6, the bottom of described outer sleeve 2, inner sleeve 3 and pipe core 6 is provided with shunting and busway 12, the inwall 4 of described inner sleeve 3 and the outer wall 5 of pipe core 6 are equipped with smooth heating surface, the raw gas heat transferred of overflowing the inwall 4 of inner sleeve 3 and the heating surface of pipe core 6 outer walls 5.
The top of described inner sleeve 3 and outer sleeve 2 is connected with flange 1, and flange 1 place adopts ripple struction, can prevent that two sleeve inner tubal wall temperature from changing with the raw gas flow, and the stress that produces guarantees the safe operation of heat-exchange system.The junction, top of described outer sleeve 2 and inner sleeve 3 is provided with corrugated tube baffling district 8, and the top of pipe core 6 is provided with pipe core baffling district 9; Described outer sleeve 2, the bottom of inner sleeve 3 and pipe core 6 is provided with shunting and busway 12, one end of described shunting and busway 12 is provided with the import 11 of the cooling gas of inertia, the other end is provided with outlet 7, described cooling gas is punished into two the road from import 11 and is entered in the spiral return flow line 10 of outer sleeve 2 and pipe core 6 centres, from bottom to top, then respectively through corrugated tube baffling district 8 and pipe core baffling district 9 more from top to down, compile by outlet at bottom 7 by the cooling gas of heating surface after the raw gas heating, wherein, the cooling gas of inertia can be air or nitrogen.
Be equipped with spiral return flow line 10 in described outer sleeve 2, inner sleeve 3 and the pipe core 6, be provided with some fins 12 in the described spiral return flow line 10, described fin 12 is spiral groove type, allow cooling gas in spiral slot, flow, absorb the heat of raw gas, the helix angle of described fin 12 is 3 °～4 °, highly is 48.5mm.
Among the present invention, during the upcast interchanger of the raw gas that overflows from coking chamber by the coke oven furnace roof, with the heat transferred of raw gas inside and outside the upcast interchanger heating surface of two sleeve linings and the heating surface of pipe core outer wall, the cooling gas of inertia is divided into two the road from the bottom inlet of interchanger and enters in the center-aisle of outer sleeve and pipe core, from bottom to top, respectively more from top to down, the cooling gas after the heating is pooled to main effuser by outlet at bottom then.It is poly-cold that this air inlet and the structure of giving vent to anger can prevent that the barrel of interchanger of raw gas side and cooling gas that tube wall is subjected to inertia from entering, and make that tar is separated out in the raw gas, aggregates into graphite under the condition of high temperature.The inwall of double-sleeve structure and the outer wall of pipe core are smooth surface simultaneously, are conducive to the raw gas circulation, are not easy to separate out tar and hang burnt.The temperature out that the size of the spiral return flow line of two sleeves and pipe core and inclination angle are set according to heated medium and heat and set, can control heat between raw gas and the cooling gas according to physical parameters such as the flow of cooling gas and resistance to flows, guarantee that raw gas can be controlled in the noncoking temperature levels at sleeve lining and the pipe core outside wall temperature of upcast interchanger.
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, its structure formation adopts the multiply spiral return flow line structural shape of the heating surface of inside and outside sleeve and pipe core return flow line pattern to have the enhanced heat exchange effect, and heating surface area is arranged in and increases to some extent in the finite space of upcast and more reasonable, improved the heat exchange effect between high temperature section raw gas and the cooling gas, the cold gas physical efficiency is obtained the heat of raw gas effectively, can control the temperature out of raw gas by changing the cooling gas flow simultaneously, avoided raw gas under the state of sharply cooling, coal-tar middle oil the separating out of raw gas caused the coking of upcast tube wall, influences the coke oven safe operation.
Cooling gas of the present invention is rare gas element, nitrogen or air, and the scantlings of the structure of interchanger 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 invention has the beneficial effects as follows:
The present invention is guaranteeing the coke oven safe operation and is not influencing under the prerequisite of other processing requirements of raw gas, the waste heat amount more than 60% 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.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is synoptic diagram of the present invention;
Fig. 2 is shunting and the synoptic diagram of busway among the present invention.
Embodiment
Disclosed all features in this specification sheets, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
Coke oven coke oven uprising tube raw gas residual neat recovering system as depicted in figs. 1 and 2, comprise the upcast interchanger, described upcast interchanger comprises outer sleeve 2, the inwall of described outer sleeve 2 is connected with inner sleeve 3, form double-sleeve structure, the center of described inner sleeve 3 is provided with pipe core 6, the bottom of described outer sleeve 2, inner sleeve 3 and pipe core 6 is provided with shunting and busway 12, the inwall 4 of described inner sleeve 3 and the outer wall 5 of pipe core 6 are equipped with smooth heating surface, the raw gas heat transferred of overflowing the inwall 4 of inner sleeve 3 and the heating surface of pipe core 6 outer walls 5.
The top of described inner sleeve 3 and outer sleeve 2 is connected with flange 1, and flange 1 place adopts ripple struction, can prevent that two sleeve inner tubal wall temperature from changing with the raw gas flow, and the stress that produces guarantees the interchanger safe operation.The junction, top of described outer sleeve 2 and inner sleeve 3 is provided with corrugated tube baffling district 8, and the top of pipe core 6 is provided with pipe core baffling district 9; Described outer sleeve 2, the bottom of inner sleeve 3 and pipe core 6 is provided with shunting and busway 12, one end of described shunting and busway 12 is provided with the import 11 of the cooling gas of inertia, the other end is provided with outlet 7, described cooling gas is punished into two the road from import 11 and is entered in the spiral return flow line 10 of outer sleeve 2 and pipe core 6 centres, from bottom to top, then respectively through corrugated tube baffling district 8 and pipe core baffling district 9 more from top to down, compile by outlet at bottom 7 by the cooling gas of heating surface after the raw gas heating, wherein, the cooling gas of inertia can be air or nitrogen.
Be equipped with spiral return flow line 10 in described outer sleeve 2, inner sleeve 3 and the pipe core 6, be provided with some fins 12 in the described spiral return flow line 10, described fin 12 is spiral groove type, allow cooling gas in spiral slot, flow, absorb the heat of raw gas, the helix angle of described fin 12 is 3 °～4 °, highly is 48.5mm.
During the upcast interchanger of the raw gas that overflows from coking chamber by the coke oven furnace roof, with the heat transferred of raw gas inside and outside the upcast interchanger heating surface of two sleeve linings and the heating surface of pipe core outer wall, cooling gas is divided into two the road from the bottom inlet of interchanger and enters in the center-aisle of outer sleeve and pipe core, from bottom to top, respectively more from top to down, the cooling gas after the heating is pooled to main effuser by outlet at bottom then.It is poly-cold that this air inlet and the structure of giving vent to anger can prevent that the barrel of interchanger of raw gas side and tube wall are entered by cooling gas, and make that tar is separated out in the raw gas, aggregates into graphite under the condition of high temperature.The inwall of double-sleeve structure and the outer wall of pipe core are smooth surface simultaneously, are conducive to the raw gas circulation, are not easy to separate out tar and hang burnt.The temperature out that the size of the spiral return flow line of two sleeves and pipe core and inclination angle are set according to heated medium and heat and set, can control heat between raw gas and the cooling gas according to physical parameters such as the flow of cooling gas and resistance to flows, guarantee that raw gas can be controlled in the noncoking temperature levels at sleeve lining and the pipe core outside wall temperature of upcast interchanger.
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, its structure formation adopts the multiply spiral return flow line structural shape of the heating surface of inside and outside sleeve and pipe core return flow line pattern to have the enhanced heat exchange effect, and heating surface area is arranged in and increases to some extent in the finite space of upcast and more reasonable, improved the heat exchange effect between high temperature section raw gas and the cooling gas, the cold gas physical efficiency is obtained the heat of raw gas effectively, can control the temperature out of raw gas by changing the cooling gas flow simultaneously, avoided raw gas under the state of sharply cooling, coal-tar middle oil the separating out of raw gas caused the coking of upcast tube wall, influences the coke oven safe operation.
Cooling gas of the present invention is rare gas element, nitrogen or air, and the scantlings of the structure of interchanger 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 present invention is guaranteeing the coke oven safe operation and is not influencing under the prerequisite of other processing requirements of raw gas, the waste heat amount more than 60% 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.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (4)
1. coke oven coke oven uprising tube raw gas residual neat recovering system, it is characterized in that: comprise the upcast interchanger, described upcast interchanger comprises outer sleeve (2), the inwall of described outer sleeve (2) is connected with inner sleeve (3), form double-sleeve structure, the center of described inner sleeve (3) is provided with pipe core (6), the inwall (4) of described inner sleeve (3) and the outer wall (5) of pipe core (6) are equipped with smooth heating surface, the raw gas heat transferred of overflowing the inwall (4) of inner sleeve (3) and the heating surface of pipe core (6) outer wall (5);
The junction, top of described outer sleeve (2) and inner sleeve (3) is provided with corrugated tube baffling district (8), and the top of pipe core (6) is provided with pipe core baffling district (9);
Described outer sleeve (2), the bottom of inner sleeve (3) and pipe core (6) is provided with shunting and busway (12), one end of described shunting and busway (12) is provided with the import (11) of cooling gas, the other end is provided with outlet (7), described cooling gas is punished into two the road from import (11) and is entered in the spiral return flow line (10) of outer sleeve (2) and pipe core (6) centre, from bottom to top, then respectively through corrugated tube baffling district (8) and pipe core baffling district (9) more from top to down, compile by outlet at bottom (7) by the cooling gas of heating surface after the raw gas heating.
2. coke oven coke oven uprising tube raw gas residual neat recovering system according to claim 1, it is characterized in that: the top of described inner sleeve (3) and outer sleeve (2) is connected with flange (1), and flange (1) locates to adopt ripple struction.
3. coke oven coke oven uprising tube raw gas residual neat recovering system according to claim 1, it is characterized in that: be provided with some fins (12) in the described spiral return flow line (10), described fin (12) is spiral groove type, allow cooling gas in spiral slot, flow, absorb the heat of raw gas, the helix angle of described fin (12) is 3 °～4 °, highly is 48.5mm.
4. coke oven coke oven uprising tube raw gas residual neat recovering system according to claim 1, it is characterized in that: described cooling gas is rare gas element, rare gas element is air or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310197229.4A CN103320149B (en) | 2013-05-24 | 2013-05-24 | Coke oven ascension pipe crude gas waste heat recycling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310197229.4A CN103320149B (en) | 2013-05-24 | 2013-05-24 | Coke oven ascension pipe crude gas waste heat recycling system |
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| CN103320149A true CN103320149A (en) | 2013-09-25 |
| CN103320149B CN103320149B (en) | 2014-09-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353557A (en) * | 2022-01-10 | 2022-04-15 | 江苏道和环保科技有限公司 | Coke oven raw gas waste heat recovery device |
| CN114836223A (en) * | 2022-05-13 | 2022-08-02 | 安徽工业大学 | Coke oven riser waste heat recovery system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102977901A (en) * | 2012-12-21 | 2013-03-20 | 刘庸 | Coke furnace rising pipe waste heat recovery device |
| 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 |
-
2013
- 2013-05-24 CN CN201310197229.4A patent/CN103320149B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102977901A (en) * | 2012-12-21 | 2013-03-20 | 刘庸 | Coke furnace rising pipe waste heat recovery device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353557A (en) * | 2022-01-10 | 2022-04-15 | 江苏道和环保科技有限公司 | Coke oven raw gas waste heat recovery device |
| CN114353557B (en) * | 2022-01-10 | 2023-11-03 | 江苏道和环保科技有限公司 | Raw coke oven gas waste heat recovery device |
| CN114836223A (en) * | 2022-05-13 | 2022-08-02 | 安徽工业大学 | Coke oven riser waste heat recovery system |
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| CN103320149B (en) | 2014-09-24 |
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