CN103320149B - 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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- CN103320149B CN103320149B CN201310197229.4A CN201310197229A CN103320149B CN 103320149 B CN103320149 B CN 103320149B CN 201310197229 A CN201310197229 A CN 201310197229A CN 103320149 B CN103320149 B CN 103320149B
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- coke oven
- sleeve
- raw gas
- inner sleeve
- pipe core
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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 overflowing 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 coke making process flow process, is to set up resources conservation, the energy-conservation main direction in eco-friendly green coke-oven plant, is also one of main path reducing coke oven energy consumption.But the exploitation of the excavation of China to secondary energy quality potentiality, value and low-quality residual heat and energy utilize support technology and equipment to lag behind, for example the residual heat resources of 250～300 DEG C 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 approximately has 50 kg/ton Jiao.650 DEG C～700 DEG C raw gas of overflowing through upcast from coking chamber are taken heat out of and are accounted for coke oven total heat 36%.For the raw gas of cooling down high-temperature must spray a large amount of 70 DEG C～75 DEG C cyclic ammonia waters, high temperature raw gas is cooled to 82 DEG C～85 DEG C because of a large amount of evaporations of cyclic ammonia water, then is cooled to 22 DEG C～35 DEG C through primary cooler, and raw gas is taken heat out of and is wasted.The waste heat recovery of raw gas at present, also in development, as by technology such as thermal oil jacket pipe, heat pipe, boiler, semiconductor temperature differential generating and jacket pipes, is reclaimed raw gas and is taken heat out of, but some method and mode also do not reach industrial production application.
Summary of the invention
The problem that the present invention is wasted in order to solve waste heat that in current coke making process process, raw gas is taken out of, a kind of coke oven coke oven uprising tube raw gas residual neat recovering system is provided for this reason, take heat out of for reclaiming 650 DEG C～700 DEG C raw gas of overflowing through upcast from coke furnace carbonization chamber, 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 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, and the raw gas heat overflowing has passed to 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 raw gas flow, and the stress producing, ensures 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 Cheng Er road from import 11 and is entered in the spiral return flow line 10 in the middle of outer sleeve 2 and pipe core 6, from bottom to top, then respectively through corrugated tube baffling district 8 and pipe core baffling district 9 more from top to down, cooling gas by heating surface after raw gas heating collects by outlet at bottom 7, wherein, the cooling gas of inertia can be air or nitrogen.
In described outer sleeve 2, inner sleeve 3 and pipe core 6, be equipped with spiral return flow line 10, in described spiral return flow line 10, be provided with some fins 13, described fin 13 is spiral groove type, allow cooling gas flow in spiral slot, absorb the heat of raw gas, the helix angle of described fin 13 is 3 °～4 °, is highly 48.5mm.
In the present invention, when the raw gas overflowing from coking chamber passes through the upcast interchanger of oven top of coke oven, the heat of raw gas has been passed to two heating surfaces of sleeve lining and the heating surface of pipe core outer wall inside and outside upcast interchanger, the cooling gas of inertia is divided in the center-aisle that two roads enter into outer sleeve and pipe core from the bottom inlet of interchanger, from bottom to top, then respectively more from top to down, the cooling gas after heating is pooled to main effuser by outlet at bottom.It is poly-cold that this air inlet and air outlet structure can prevent that the barrel of interchanger of raw gas side and tube wall are entered by the cooling gas of inertia, and tar in raw gas is separated out, and under the condition of high temperature, aggregates into graphite.The inwall of double-sleeve structure and the outer wall of pipe core are smooth surface simultaneously, are conducive to 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 setting, can control the heat between raw gas and cooling gas according to the physical parameter such as flow and resistance to flow of cooling gas, ensure that raw gas can be controlled in 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 applicable 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 enhanced heat exchange effect, and heating surface area is arranged in and in the finite space of upcast, increases to some extent and more reasonable, improve the heat transfer effect between high temperature section raw gas and cooling gas, cold gas physical efficiency is obtained the heat of raw gas effectively, can control by changing cooling gas flow the temperature out of raw gas simultaneously, avoid 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, affect 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 ensureing coke oven safe operation and is not affecting under the prerequisite of other processing requirements of raw gas, the more than 60% waste heat amount of upcast interchanger energy efficient recovery raw gas, and reduce the ammonia volume for raw gas desuperheat, also reduced the poisonous and harmful waste water producing in raw gas purification process flow process simultaneously.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is shunting and the schematic diagram of busway in the present invention.
Embodiment
Disclosed all features in this specification sheets, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Coke oven coke oven uprising tube raw gas residual neat recovering system as depicted in figs. 1 and 2, comprise 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, and the raw gas heat overflowing has passed to 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 raw gas flow, and the stress producing, ensures 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 Cheng Er road from import 11 and is entered in the spiral return flow line 10 in the middle of outer sleeve 2 and pipe core 6, from bottom to top, then respectively through corrugated tube baffling district 8 and pipe core baffling district 9 more from top to down, cooling gas by heating surface after raw gas heating collects by outlet at bottom 7, wherein, the cooling gas of inertia can be air or nitrogen.
In described outer sleeve 2, inner sleeve 3 and pipe core 6, be equipped with spiral return flow line 10, in described spiral return flow line 10, be provided with some fins 13, described fin 13 is spiral groove type, allow cooling gas flow in spiral slot, absorb the heat of raw gas, the helix angle of described fin 13 is 3 °～4 °, is highly 48.5mm.
When the raw gas overflowing from coking chamber passes through the upcast interchanger of oven top of coke oven, the heat of raw gas has been passed to two heating surfaces of sleeve lining and the heating surface of pipe core outer wall inside and outside upcast interchanger, cooling gas is divided in the center-aisle that two roads enter into outer sleeve and pipe core from the bottom inlet of interchanger, from bottom to top, then respectively more from top to down, the cooling gas after heating is pooled to main effuser by outlet at bottom.It is poly-cold that this air inlet and air outlet structure can prevent that the barrel of interchanger of raw gas side and tube wall are entered by cooling gas, and tar in raw gas is separated out, and under the condition of high temperature, aggregates into graphite.The inwall of double-sleeve structure and the outer wall of pipe core are smooth surface simultaneously, are conducive to 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 setting, can control the heat between raw gas and cooling gas according to the physical parameter such as flow and resistance to flow of cooling gas, ensure that raw gas can be controlled in 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 applicable 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 enhanced heat exchange effect, and heating surface area is arranged in and in the finite space of upcast, increases to some extent and more reasonable, improve the heat transfer effect between high temperature section raw gas and cooling gas, cold gas physical efficiency is obtained the heat of raw gas effectively, can control by changing cooling gas flow the temperature out of raw gas simultaneously, avoid 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, affect 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 ensureing coke oven safe operation and is not affecting under the prerequisite of other processing requirements of raw gas, the more than 60% waste heat amount of upcast interchanger energy efficient recovery raw gas, and reduce the ammonia volume for raw gas desuperheat, also reduced the poisonous and harmful waste water producing in 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 disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (4)
1. a coke oven coke oven uprising tube raw gas residual neat recovering system, it is characterized in that: comprise 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, and the raw gas heat overflowing has passed to 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 enters in the spiral return flow line (10) in the middle of outer sleeve (2) and pipe core (6) from import (11) punishment Cheng Er road, from bottom to top, then respectively through corrugated tube baffling district (8) and pipe core baffling district (9) more from top to down, cooling gas by heating surface after raw gas heating collects by outlet at bottom (7).
2. coke oven coke oven uprising tube raw gas residual neat recovering system according to claim 1, 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: in described spiral return flow line (10), be provided with some fins (13), described fin (13) is spiral groove type, allow cooling gas flow in spiral slot, absorb the heat of raw gas, the helix angle of described fin (13) is 3 °～4 °, is highly 48.5mm.
4. coke oven coke oven uprising tube raw gas residual neat recovering system according to claim 1, 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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| Publication Number | Publication Date |
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| CN103320149A CN103320149A (en) | 2013-09-25 |
| CN103320149B true CN103320149B (en) | 2014-09-24 |
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| CN201310197229.4A Expired - Fee Related CN103320149B (en) | 2013-05-24 | 2013-05-24 | Coke oven ascension pipe crude gas waste heat recycling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
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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 |
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| CN103320149A (en) | 2013-09-25 |
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