CN112322308A - Combustion chamber structure capable of changing furnace wall thickness along length direction - Google Patents
Combustion chamber structure capable of changing furnace wall thickness along length direction Download PDFInfo
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- CN112322308A CN112322308A CN202011355072.XA CN202011355072A CN112322308A CN 112322308 A CN112322308 A CN 112322308A CN 202011355072 A CN202011355072 A CN 202011355072A CN 112322308 A CN112322308 A CN 112322308A
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- furnace wall
- combustion chamber
- wall
- furnace
- coke
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 37
- 239000000571 coke Substances 0.000 claims abstract description 61
- 239000011449 brick Substances 0.000 claims abstract description 27
- 238000005192 partition Methods 0.000 claims abstract description 20
- 238000003763 carbonization Methods 0.000 claims description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 15
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 4
- 238000004939 coking Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- 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
- C10B29/00—Other details of coke ovens
-
- 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
- C10B29/00—Other details of coke ovens
- C10B29/02—Brickwork, e.g. casings, linings, walls
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to a combustion chamber structure capable of changing the thickness of a furnace wall along the length direction, wherein the combustion chamber consists of the furnace wall, a machine side furnace end and a coke side furnace end and is divided into a plurality of vertical flame paths by vertical flame path partition walls; the furnace wall is built by furnace wall bricks, and the partition wall of the vertical flue is built by partition wall bricks; the furnace wall is divided into 3 parts from the machine side to the coke side, namely a machine side furnace end furnace wall, a main body furnace wall and a coke side furnace end furnace wall; wherein, the thickness of the main furnace wall is thinner and thinner along the direction from the machine side to the coke side. The invention effectively adjusts the heat transfer effect of different vertical flame paths by changing the thickness of the combustion chamber along the length direction of the furnace wall; the heat transfer efficiency is improved at the thinner part of the furnace wall, so that the total required heating gas amount is reduced during the production of the coke oven, the heat consumption of the coke oven is reduced, the temperature of the vertical flame path is reduced, and the generation amount of nitrogen oxides is reduced, thereby realizing the purposes of energy conservation, emission reduction and environmental protection in the aspect of source management.
Description
Technical Field
The invention relates to a combustion chamber structure of a coke oven, in particular to a combustion chamber structure with the thickness of an oven wall changed along the length direction.
Background
In the coking industry, a coke oven is used as a coking unit and has the remarkable characteristics of high energy consumption of unit products, large exhaust emission and generation of harmful gases such as nitrogen oxides and the like. In view of the urgent requirements of energy conservation, emission reduction and environmental protection, the structure of the coke oven is also continuously improved and perfected, such as adopting the modes of waste gas circulation, multi-stage heating and the like.
In the conventional combustion chamber structure, the thickness of the furnace wall is uniform along the machine-coke side, i.e. the long direction of the combustion chamber, and the structure mode is simpler. However, in order to reduce the coke pushing resistance and facilitate the coke pushing, the coking chamber has a certain taper, so that the width of the coking chamber on the coke side is larger than that on the machine side. The presence of conicity on both sides of the machine coke has different effects on the top-loaded coke oven and the stamp-charged coke oven. For a top-loading coke oven, the coal loading amount of the two sides of the machine coke is different, the coal loading amount of the coke side is larger than that of the machine side, and the heat consumption ratio of the machine side and the coke side is equal to the 1.8 th power of the average width ratio of the coking chambers of the two sides according to the calculation of theory and practical production experience. For a tamping coke oven, the widths of coal cakes on the machine side and the coke side are the same, but the gaps between the coal cakes and the oven wall are different, so the heat transfer coefficients are different, the amount of coal gas required by the coke side is more than that of the machine side, the combustion on the coke side is more intense, the temperature of a vertical flue is higher, and the coking of the coke oven is high in heat consumption and the generation amount of nitrogen oxides is large.
The Chinese patent application with the application publication number of CN 111269727A discloses a multi-section heating type coke oven combustion chamber regulating port structure, a sectional heating type single channel or a sectional heating type double channel is arranged in a vertical flame path partition wall of a coke oven combustion chamber; the sectional heating type single channel is a fuel channel or an air channel; the segmented heating type double channels are a fuel channel and an air channel; the vertical flame path partition wall is provided with an adjusting port seat protruding out of the wall body at a position corresponding to the middle upper part of the combustion chamber, a pore channel is arranged in the adjusting port seat, the lower port of the pore channel is communicated with a corresponding fuel channel and/or air channel, the upper port of the pore channel is communicated with a corresponding vertical flame path, and the upper port of the pore channel can be partially or completely sealed by an adjusting brick arranged on the adjusting port seat. By adopting the technical scheme, the opening degree of the fuel outlet or the air outlet positioned at the upper part of the combustion chamber can be adjusted through the furnace top peep hole in the production and operation processes of the coke oven, and the distribution proportion of the air quantity in different sections is readjusted according to the requirement, so that the uniformity of the long-direction temperature of the combustion chamber is improved, the heat loss is reduced, and the coke quality is improved. In the technical scheme, the structure of the vertical flue partition wall is complex, the number of bricks for building the vertical flue partition wall is increased, and the vertical flue partition wall is only suitable for large-scale coke ovens.
Disclosure of Invention
The invention provides a combustion chamber structure capable of changing the thickness of a furnace wall along the length direction, which effectively adjusts the heat transfer effect of different vertical flame paths through the change of the thickness of the furnace wall along the length direction of the combustion chamber; the heat transfer efficiency is improved at the thinner part of the furnace wall, so that the total required heating gas amount is reduced during the production of the coke oven, the heat consumption of the coke oven is reduced, the temperature of the vertical flame path is reduced, and the generation amount of nitrogen oxides is reduced, thereby realizing the purposes of energy conservation, emission reduction and environmental protection in the aspect of source management.
In order to achieve the purpose, the invention adopts the following technical scheme:
a combustion chamber structure along the length direction to change the thickness of the furnace wall, the combustion chamber is composed of the furnace wall, the machine side furnace end and the coke side furnace end, and is divided into a plurality of vertical flame paths by vertical flame path partition walls; the furnace wall is built by furnace wall bricks, and the partition wall of the vertical flue is built by partition wall bricks; the furnace wall is divided into 3 parts from the machine side to the coke side, namely a machine side furnace end furnace wall, a main body furnace wall and a coke side furnace end furnace wall; wherein, the thickness of the main furnace wall is thinner and thinner along the direction from the machine side to the coke side.
The main furnace wall is divided into a plurality of sections along the length direction of the combustion chamber, and the thickness of each section of furnace wall is gradually reduced from the machine side to the coke side.
The wall surface of the furnace wall facing to one side of the carbonization chamber is a plane.
The thickness variation range of the main furnace wall is 80-115 mm.
The adjacent 2 layers of furnace wall bricks are connected in a brick groove brick tongue form.
The furnace wall bricks are connected with the partition wall bricks in an occlusion joint mode.
The length of the furnace wall of the machine side furnace end is the length of the machine side furnace end 2 opposite to the flame path.
The length of the coke side furnace end furnace wall is the length of the coke side furnace end 2 opposite to the flame path.
Compared with the prior art, the invention has the beneficial effects that:
the heat transfer effects of different vertical flame paths are effectively adjusted through the change of the thickness of the furnace wall of the combustion chamber along the length direction; the heat transfer efficiency is improved at the thinner part of the furnace wall, so that the total required heating gas amount is reduced during the production of the coke oven, the heat consumption of the coke oven is reduced, the temperature of the vertical flame path is reduced, and the generation amount of nitrogen oxides is reduced, thereby realizing the purposes of energy conservation, emission reduction and environmental protection in the aspect of source management.
Drawings
FIG. 1 is a schematic view showing a structure of a combustion chamber according to the present invention, in which the thickness of the furnace wall varies along the length direction.
In the figure: 1. furnace wall 2, machine side furnace end 3, coke side furnace end 4, vertical flue partition wall 5, vertical flue
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in figure 1, the combustion chamber structure of the invention which changes the thickness of the furnace wall along the length direction is composed of a furnace wall 1, a machine side furnace end 2 and a coke side furnace end 3, and is divided into a plurality of vertical flame paths 5 by vertical flame path partition walls 4; the furnace wall 1 is built by furnace wall bricks; the furnace wall 1 is divided into 2 parts from the machine side to the coke side, namely a main furnace wall and a coke side furnace wall; wherein, the thickness of the main furnace wall is thinner and thinner along the direction from the machine side to the coke side.
The main furnace wall is divided into a plurality of sections along the length direction of the combustion chamber, and the thickness of each section of furnace wall is gradually reduced from the machine side to the coke side.
The wall surface of the furnace wall 1 facing one side of the carbonization chamber is a plane.
The thickness variation range of the main furnace wall is 80-115 mm.
The adjacent 2 layers of furnace wall bricks are connected in a brick groove brick tongue form.
The furnace wall bricks are connected with the partition wall bricks in an occlusion joint mode.
The length of the furnace wall of the machine side furnace end is the length of one end 2 of the machine side furnace end 2 opposite to the flame path.
The length of the coke side furnace end furnace wall is the length of one end 2 of the coke side furnace end 2 opposite to the flame path.
The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.
[ examples ] A method for producing a compound
As shown in FIG. 1, in this embodiment, the combustion chamber and the carbonization chamber are arranged at a distance, and the combustion chamber and the carbonization chamber are separated by a furnace wall. The combustion chamber consists of 18 pairs of flame paths, labeled 1# to 36# vertical flame paths, separated along the machine-coke side (i.e., the long direction). Wherein the No. 1 vertical flame path-No. 2 vertical flame path is a furnace wall of a machine side furnace end, the area between the No. 3 vertical flame path-No. 34 vertical flame path is a main body furnace wall, and the No. 35 vertical flame path-No. 36 vertical flame path is a furnace wall of a coke side furnace end.
The furnace wall thickness of the furnace end of the machine side, namely the furnace wall corresponding to the vertical flame path from 1# to 2# is 100 mm.
The thickness of the main furnace wall varies as follows: the thickness of a furnace wall corresponding to the No. 3 vertical flame path is 115mm, the thickness of a furnace wall corresponding to the No. 4 vertical flame path is 110mm, the thickness of a furnace wall corresponding to the No. 5 vertical flame path to No. 8 vertical flame path is 105mm, the thickness of a furnace wall corresponding to the No. 9 vertical flame path to No. 12 vertical flame path is 100mm, the thickness of a furnace wall corresponding to the No. 13 vertical flame path to No. 16 vertical flame path is 95mm, the thickness of a furnace wall corresponding to the No. 17 vertical flame path to No. 24 vertical flame path is 90mm, the thickness of a furnace wall corresponding to the No. 25 vertical flame path to No. 32 vertical flame path is 85mm, and the thickness of a furnace wall corresponding to the No. 33 vertical flame path to No. 34 vertical flame path is 80 mm.
The thickness of the furnace wall of the coke side furnace end, namely the furnace wall corresponding to the vertical flame path from 35# to 36# is 100mm, so that the connection strength with the coke side furnace end is ensured.
Furnace wall bricks and partition wall bricks are connected in an occlusion joint mode, and adjacent 2 layers of furnace wall bricks are connected in a brick groove and brick tongue mode.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A combustion chamber structure along the length direction to change the thickness of the furnace wall, the combustion chamber is composed of the furnace wall, the machine side furnace end and the coke side furnace end, and is divided into a plurality of vertical flame paths by vertical flame path partition walls; the furnace wall is built by furnace wall bricks, and the partition wall of the vertical flue is built by partition wall bricks; the coke oven is characterized in that the oven wall is divided into 3 parts from the oven side to the coke side, namely an oven wall of an oven end of the oven side, an oven wall of a main body and an oven wall of the oven end of the coke side; wherein, the thickness of the main furnace wall is thinner and thinner along the direction from the machine side to the coke side.
2. The structure of a combustion chamber with a variable furnace wall thickness along the length direction of claim 1, wherein the main furnace wall is divided into a plurality of sections along the combustion chamber length direction, and the thickness of each section of furnace wall is gradually reduced from the machine side to the coke side.
3. The structure of a combustion chamber with variable furnace wall thickness along the length direction of claim 1, wherein the wall surface of the furnace wall facing the carbonization chamber is a plane.
4. The structure of a combustion chamber with variable furnace wall thickness along the length direction of claim 1, wherein the thickness of the main furnace wall is varied within the range of 80-115 mm.
5. A furnace wall thickness variable combustion chamber structure as set forth in claim 1, wherein the adjacent 2 layers of furnace wall bricks are connected by brick-groove brick-tongue type.
6. The structure of a combustion chamber with a variable furnace wall thickness along the length direction of claim 1, wherein the furnace wall bricks and the partition wall bricks are connected by means of snap joints.
7. The structure of a combustion chamber with a variable furnace wall thickness along the length direction of claim 1, wherein the length of the furnace wall of the machine side head is the length of the opposite flame path of the machine side head 2.
8. A combustion chamber structure of variable wall thickness in the length direction according to claim 1, wherein the length of the coke side head wall is the length of the coke side head 2 opposite flame path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355072.XA CN112322308B (en) | 2020-11-26 | Combustion chamber structure with thickness changing along length direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355072.XA CN112322308B (en) | 2020-11-26 | Combustion chamber structure with thickness changing along length direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112322308A true CN112322308A (en) | 2021-02-05 |
| CN112322308B CN112322308B (en) | 2024-07-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114656978A (en) * | 2022-03-23 | 2022-06-24 | 中冶焦耐(大连)工程技术有限公司 | Heat recovery coke oven main wall structure with horizontal gas channel |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312063A (en) * | 1969-05-06 | 1973-04-04 | Gaz De France | Generation of controlled atmospheres in particular for metallurgical furnaces |
| CN101157864A (en) * | 2007-11-16 | 2008-04-09 | 贺建红 | Upright coke-oven transition purification receiving and extinguishing technique and equipment |
| CN201301298Y (en) * | 2008-11-13 | 2009-09-02 | 武汉科技大学 | Duplex exhaust gas reversed jet circulation stamp charging coke oven |
| CN203668305U (en) * | 2014-01-29 | 2014-06-25 | 刘运良 | Horizontal alternative heating and vertical coke discharging type coke oven |
| JP2017014346A (en) * | 2015-06-29 | 2017-01-19 | 新日鐵住金株式会社 | Refractory block for coke oven combustion chamber, and refractory block masonry structure of coke oven combustion chamber |
| WO2018094886A1 (en) * | 2016-11-24 | 2018-05-31 | 武汉科思瑞迪科技有限公司 | Direct reduction process of coal-based shaft furnace |
| CN109344523A (en) * | 2018-10-18 | 2019-02-15 | 上海应用技术大学 | A method of coke oven fire path circulation port is optimized based on Fluent software |
| CN214270754U (en) * | 2020-11-26 | 2021-09-24 | 中冶焦耐(大连)工程技术有限公司 | Combustion chamber structure capable of changing furnace wall thickness along length direction |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1312063A (en) * | 1969-05-06 | 1973-04-04 | Gaz De France | Generation of controlled atmospheres in particular for metallurgical furnaces |
| CN101157864A (en) * | 2007-11-16 | 2008-04-09 | 贺建红 | Upright coke-oven transition purification receiving and extinguishing technique and equipment |
| CN201301298Y (en) * | 2008-11-13 | 2009-09-02 | 武汉科技大学 | Duplex exhaust gas reversed jet circulation stamp charging coke oven |
| CN203668305U (en) * | 2014-01-29 | 2014-06-25 | 刘运良 | Horizontal alternative heating and vertical coke discharging type coke oven |
| JP2017014346A (en) * | 2015-06-29 | 2017-01-19 | 新日鐵住金株式会社 | Refractory block for coke oven combustion chamber, and refractory block masonry structure of coke oven combustion chamber |
| WO2018094886A1 (en) * | 2016-11-24 | 2018-05-31 | 武汉科思瑞迪科技有限公司 | Direct reduction process of coal-based shaft furnace |
| CN109344523A (en) * | 2018-10-18 | 2019-02-15 | 上海应用技术大学 | A method of coke oven fire path circulation port is optimized based on Fluent software |
| CN214270754U (en) * | 2020-11-26 | 2021-09-24 | 中冶焦耐(大连)工程技术有限公司 | Combustion chamber structure capable of changing furnace wall thickness along length direction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114656978A (en) * | 2022-03-23 | 2022-06-24 | 中冶焦耐(大连)工程技术有限公司 | Heat recovery coke oven main wall structure with horizontal gas channel |
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