CN107057720B - A kind of coke oven combustion chamber flue structure - Google Patents
A kind of coke oven combustion chamber flue structure Download PDFInfo
- Publication number
- CN107057720B CN107057720B CN201710467600.2A CN201710467600A CN107057720B CN 107057720 B CN107057720 B CN 107057720B CN 201710467600 A CN201710467600 A CN 201710467600A CN 107057720 B CN107057720 B CN 107057720B
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- flue
- combustion air
- combustion
- absolute altitude
- exhaust gas
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/18—Recirculating the flue gases
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The present invention relates to a kind of coke oven combustion chamber flue structures, the coke oven combustion chamber is made of multiple flues, every two flue forms a duplex flue, and the bottom of duplex flue is connected to by exhaust gas circulation hole, and each flue bottom sets poor gas outlet and combustion air exports respectively；The poor gas outlet of the flue bottom and the absolute altitude of combustion air exports are inconsistent, and poor gas spout elevation is higher than 50~500mm of combustion air exports absolute altitude；Combustion air exports absolute altitude is lower than exhaust gas circulation hole bottom surface absolute altitude or consistent with exhaust gas circulation hole bottom surface absolute altitude.The present invention make preheating after combustion air enter flue Shi Xianyu exhaust gas mixing, reduce combustion air in oxygen concentration, then up injection with poor gas catalytic combustion, formed mildly with depth hypoxemia dilute combustion, to reduce the production quantity of NOx.
Description
Technical field
The present invention relates to coke oven technical field more particularly to a kind of flue structures of coke oven combustion chamber.
Background technique
Modern coking furnace shaft topmost is furnace roof, is combustion chamber and the carbonization chamber of alternate configuration, lower portion of furnace body under furnace roof
There is regenerative chamber and connect the chute area of regenerative chamber and combustion chamber, the bottom flue of each regenerative chamber lower part passes through exchange shutter and cigarette
Road connection.Flue is located in coke oven base or basic two sides, and chimney is led in flue end.Therefore coke oven is carbonized by three areas Shi Liang
Room, combustion chamber, regenerative chamber, chute area, furnace roof area and foundation composition.Combustion chamber is in carbonization chamber two sides, by multiple vertical fire
Road is constituted.Regenerative chamber is located at lower portion of furnace body, divides air regenerator and gas regenerator.
A pair of of duplex flue (deserve to be called respectively and fire, decline quirk) of every two flue composition is walked respectively in combustion chamber
Ascending air and down current are equipped at the top of each pair of duplex flue and cross over hole, and bottom is equipped with exhaust gas circulation hole, makes 2 vertical fire
Road is connected.From flue bottom enters the combustion air of flue, coal gas forms ascending air after diffusion combustion, rise gas
It flows through across hole and enters decline quirk as down current, down current, which enters ascending air through quirk bottom exhaust gas circulation hole, joins
With circulation.
With the transformation of modern mode of production, to coke oven, more stringent requirements are proposed, if production capacity is big, heating system resistance
Power is small, adjusts easy to control, low azo-cycle guarantor etc..The existing lower spray coke oven in China is to improve in flue height to homogeneous heating at present
Property, meet produce load requirement, use the modes such as height lamp cap, waste gas circulation and combustion-supporting gas segmentation supply, but is inhibiting
Still there is improved space in terms of NO_x formation in combustion process.
Summary of the invention
The present invention provides a kind of flue structure of coke oven combustion chamber, the combustion air after preheating enters first when flue
Mixed with cycle gas, reduce combustion air in oxygen concentration, then up injection with coal gas catalytic combustion, formed mildly with
Depth hypoxemia dilute combustion, to reduce the production quantity of NOx.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of coke oven combustion chamber flue structure, the coke oven combustion chamber are made of multiple flues, every two flue
A duplex flue is formed, the bottom of duplex flue is connected to by exhaust gas circulation hole, and each flue bottom sets poor respectively
Gas exit and combustion air exports；The poor gas outlet of the flue bottom and the absolute altitude of combustion air exports are inconsistent,
And poor gas spout elevation is higher than 50~500mm of combustion air exports absolute altitude；Combustion air exports absolute altitude is lower than exhaust gas circulation hole
Bottom surface absolute altitude is consistent with exhaust gas circulation hole bottom surface absolute altitude.
Meager coal air flue and/or combustion air road are equipped in the partition wall of the duplex flue, meager coal air flue is along high more to setting
A poor gas is segmented outlet flue, and combustion air road is segmented outlet flues to multiple combustion airs are set along height.
Compared with prior art, the beneficial effects of the present invention are:
1) relative altitude of the outlet of flue bottom poor gas, combustion air exports and exhaust gas circulation hole is rationally set, in advance
Combustion air after heat enters the mixing of flue Shi Xianyu exhaust gas, reduces the concentration of oxygen in combustion air, sprays then up
With coal gas catalytic combustion, realize mildly with depth hypoxemia dilute combustion, to make generating for NOx in flue combustion process
Inhibit to effective, realizes the purpose of nitrogen oxides emission reduction；
2) it is suitable for the complex thermal coke of single hop heating or multistage heating.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of coke oven combustion chamber flue structure of the present invention.
Fig. 2 is the A-A cross-sectional view in Fig. 1.
Fig. 3 is the B-B cross-sectional view in Fig. 1.
In figure: 1. flue, 2. duplex flue partition, 3. exhaust gas circulation hole, 4. combustion air exports, 5. poor gas goes out
6. combustion air road of mouth, 7. meager coal air flue, 8. combustion air segmentation outlet 9. poor gas segmentation outlet
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1-Figure 3, a kind of coke oven combustion chamber flue structure of the present invention, the coke oven combustion chamber is by multiple
Flue 1 forms, and every two flue 1 forms a duplex flue, and the bottom of duplex flue is connected by exhaust gas circulation hole 3
Logical, each 1 bottom of flue sets poor gas outlet 5 and combustion air exports 4 respectively；The poor gas of 1 bottom of flue goes out
Mouthfuls 5 and combustion air exports 4 absolute altitude it is inconsistent, and poor gas export 5 absolute altitudes be higher than 4 absolute altitude 50 of combustion air exports~
500mm；4 absolute altitude of combustion air exports is lower than 3 bottom surface absolute altitude of exhaust gas circulation hole or consistent with 3 bottom surface absolute altitude of exhaust gas circulation hole.
Be equipped with meager coal air flue 7 and/or combustion air road 6 in the partition wall 2 of the duplex flue, meager coal air flue 7 along height to
If 9 connection flue 1 of multiple poor gas segmentations outlet, combustion air road 6 exports 8 connections to multiple combustion air segmentations are set along height
Flue 1.
For the complex thermal coke of single hop heating, poor gas only is respectively equipped in 1 bottom of combustion chamber flue and is gone out
Mouth 5 and combustion air exports 4；And for the complex thermal coke of multistage heating, except the poor gas of 1 bottom of flue exports 5
And outside combustion air exports 4, combustion air road 6 and/or meager coal air flue 7 are also set respectively in duplex flue partition 2, respectively simultaneously
Along height to multiple poor gas segmentations outlet 9 and/or multiple combustion airs segmentation outlet 8 is set, that is, uses poor gas segmentation supply, helps
The supply of combustion air segmenting or poor gas and combustion air are segmented the mode of supply simultaneously.
The present invention is mainly to rationally design to combustion air exports 4 and the poor gas outlet 5 of 1 bottom of flue, i.e.,
The combustion air exports 4 of 1 bottom of flue are limited lower than exhaust gas circulation hole 3 or are arranged at an equal altitude with it, poor gas outlet 5 is higher than useless
Gas circulation port 3 is arranged, so that the combustion air after preheating be made to enter the mixing of 1 Shi Xianyu exhaust gas of flue, is reduced in combustion air
The concentration of oxygen, then up injection with coal gas catalytic combustion, formed mildly with depth hypoxemia dilute combustion, and then reduce NOx
Production quantity.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (1)
1. a kind of coke oven combustion chamber flue structure, the coke oven combustion chamber are made of multiple flues, every two flue group
At a duplex flue；The bottom of duplex flue is connected to by exhaust gas circulation hole, and each flue bottom sets meager coal respectively
Gas outlet and combustion air exports；It is characterized in that, the mark of the poor gas outlet and combustion air exports of the flue bottom
It is high inconsistent, and poor gas spout elevation is higher than 50~500mm of combustion air exports absolute altitude；Combustion air exports absolute altitude is lower than useless
Gas circulation port bottom surface absolute altitude is consistent with exhaust gas circulation hole bottom surface absolute altitude；Meager coal air flue is equipped in the partition wall of the duplex flue
And/or combustion air road, meager coal air flue along high to setting multiple poor gas segmentation outlet flues, combustion air road along it is high to
If multiple combustion airs are segmented outlet flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710467600.2A CN107057720B (en) | 2017-06-20 | 2017-06-20 | A kind of coke oven combustion chamber flue structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710467600.2A CN107057720B (en) | 2017-06-20 | 2017-06-20 | A kind of coke oven combustion chamber flue structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107057720A CN107057720A (en) | 2017-08-18 |
| CN107057720B true CN107057720B (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710467600.2A Active CN107057720B (en) | 2017-06-20 | 2017-06-20 | A kind of coke oven combustion chamber flue structure |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI681048B (en) * | 2017-09-15 | 2020-01-01 | 德商蒂森克虜伯工業解決方案股份有限公司 | Coke oven device having a circular flow path with an encircling flow around it for the production of coke, and method for operating the coke oven device, and control installation, and use thereof |
| CN108467913A (en) * | 2018-04-13 | 2018-08-31 | 中冶焦耐(大连)工程技术有限公司 | A kind of ultra-large volume coal base upright furnace producing direct reduced iron |
| CN108949193B (en) * | 2018-07-31 | 2021-02-09 | 中冶焦耐(大连)工程技术有限公司 | Coke oven waste gas circulation volume automatic control system and method |
| CN110527526B (en) * | 2019-09-27 | 2024-05-14 | 中冶焦耐(大连)工程技术有限公司 | Lamp cap brick with multi-section outlet |
| CN114437740A (en) * | 2022-01-12 | 2022-05-06 | 华泰永创(北京)科技股份有限公司 | Coke oven system and method for operating the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205223094U (en) * | 2015-12-02 | 2016-05-11 | 中冶焦耐工程技术有限公司 | Effectively reduce vertical flue polycrystalline substance that coke oven nitrogen oxide generated |
| CN206887004U (en) * | 2017-06-20 | 2018-01-16 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure |
-
2017
- 2017-06-20 CN CN201710467600.2A patent/CN107057720B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205223094U (en) * | 2015-12-02 | 2016-05-11 | 中冶焦耐工程技术有限公司 | Effectively reduce vertical flue polycrystalline substance that coke oven nitrogen oxide generated |
| CN206887004U (en) * | 2017-06-20 | 2018-01-16 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven combustion chamber flue structure |
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| CN107057720A (en) | 2017-08-18 |
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