CN215250597U - Burning system of reheating multi-section heating coke oven - Google Patents
Burning system of reheating multi-section heating coke oven Download PDFInfo
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- CN215250597U CN215250597U CN202121033627.9U CN202121033627U CN215250597U CN 215250597 U CN215250597 U CN 215250597U CN 202121033627 U CN202121033627 U CN 202121033627U CN 215250597 U CN215250597 U CN 215250597U
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Abstract
The utility model relates to a reheating multi-section heating coke oven combustion system, wherein each vertical flue of the double vertical flue is respectively provided with a coke oven gas inlet, a multi-section air inlet and a blast furnace gas inlet; the multi-section air supply inlets are respectively arranged in the double-linkage vertical flue partition wall and the vertical flue partition wall on one side, wherein the first section air supply inlet is arranged at the lower part of the double-linkage vertical flue partition wall or the vertical flue partition wall and is higher than the waste gas circulation hole; the coke oven gas supply inlet and the blast furnace gas supply inlet are both arranged at the bottom of the vertical flue. The utility model is suitable for a reheating coke oven which can use coke oven gas as a heat source and also can use blast furnace gas as a heat source; the first section of air supply inlet is arranged at the lower part of the double vertical flue partition wall or the vertical flue partition wall, so that the bottom space of the combustion chamber is effectively saved, the vertical flue is improved in the uniformity of high-direction heating, the generation of nitrogen oxides is favorably reduced, the atmospheric pollution is reduced, the structure is simple, and the coke oven gas tube bricks are conveniently dredged.
Description
Technical Field
The utility model relates to a coke oven technical field especially relates to a compound hot type multistage heating coke oven combustion system.
Background
Modern coke ovens are primarily chamber ovens, consisting of a regenerator, a chute, a combustion chamber, a coking chamber, and a roof region. With the development of coke oven technology and the upgrade of production equipment, higher requirements are also put forward on the production and operation of coke ovens, such as high-directional heating uniformity, production capacity, pollutant content in tail gas and the like.
At present, a new domestic coke oven project mainly takes a duplex-flame-path downward-spraying coke oven as a main part, fuel and air enter a combustion chamber from the lower part of the coke oven through a regenerative chamber and a chute for combustion, and after combustion, the fuel and the air reach the bottom of the combustion chamber through a downward flame path and are discharged out of the coke oven through the chute and the regenerative chamber. In order to control the combustion temperature in the vertical flue and improve the uniformity of high-direction heating in the vertical flue, high and low lamp heads, waste gas circulation, and staged combustion air supply are generally adopted. For the coke oven combustion system adopting a combustion-supporting air segmented feeding mode, the air feeding generally adopts a Y-shaped channel structure, namely, a first section of air feeding inlet is arranged at the bottom of a combustion chamber, and the rest sections of air feeding inlets are respectively arranged on a vertical flue partition wall along the height direction; this construction is inherently complicated and disadvantageous for controlling the proportion of air fed in sections. In addition, the combustion chamber bottom space is comparatively narrow and small, and first section air feed inlet is located found the flame path bottom, is unfavorable for the long-term stability of combustion chamber structure, and masonry error control requires highly, makes the construction degree of difficulty increase.
Disclosure of Invention
The utility model provides a combustion system of a reheating multi-section heating coke oven, which is suitable for a reheating coke oven which can use coke oven gas as a heat source and also can use blast furnace gas as a heat source; compared with the existing reheating coke oven structure, the first section air supply inlet is arranged at the lower part of the duplex vertical flue partition wall or the vertical flue partition wall, so that the bottom space of a combustion chamber is effectively saved, the vertical flue high-direction heating uniformity is improved, the generation of nitrogen oxides is favorably reduced, the atmospheric pollution is reduced, the structure is simple, and the coke oven gas tube bricks are convenient to dredge.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a kind of compound heat type multistage heating coke oven combustion system, the coke oven is made up of regenerator, chute, combustion chamber, charring chamber and furnace roof area; the combustion chambers and the carbonization chambers are alternately arranged, each combustion chamber consists of a plurality of pairs of duplex vertical flues, every two adjacent duplex vertical flues are separated by a partition wall of the duplex vertical flues, each duplex vertical flue comprises 2 vertical flues, and every two vertical flues are separated by a partition wall of the vertical flues; each vertical flue is respectively provided with a coke oven gas supply inlet, a multi-section air supply inlet and a blast furnace gas supply inlet; the multi-section air supply inlets are arranged on the double vertical flue partition wall or the vertical flue partition wall on one side, wherein the first section air supply inlet is arranged at the lower part of the double vertical flue partition wall or the vertical flue partition wall and is higher than the waste gas circulation hole; the coke oven gas supply inlet and the blast furnace gas supply inlet are both arranged at the bottom of the vertical flue.
The duplex vertical flue partition wall and the vertical flue partition wall are respectively provided with a combustion-supporting air channel, and the combustion-supporting air channels are communicated with the corresponding vertical flues through a plurality of sections of air supply inlets; the lower end of the combustion-supporting air channel is connected with the air regenerator and the corresponding small air flue through a short chute.
In the same duplex vertical flue, the same section of air supply inlet arranged on the partition wall of the duplex vertical flue and the partition wall of the vertical flue has height difference.
Adjusting bricks are respectively arranged at the multi-section air supply inlets.
The coke oven gas supply inlet is arranged on a gas pipe brick corresponding to the bottom of the vertical flue, the coke oven gas supply inlet is connected with a main coke oven gas pipeline through a coke oven gas branch pipeline, a coke oven gas channel is arranged in a partition wall and a chute area of the heat accumulation chamber and is used for the coke oven gas branch pipeline to pass through, and the coke oven gas branch pipeline is a straight pipe and is vertically arranged.
The blast furnace gas feed inlet is connected with a small blast furnace gas flue through a long chute and a blast furnace gas regenerative chamber.
The blast furnace gas supply inlet is a strip-shaped hole.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the coke oven gas heating or the blast furnace gas heating can be adopted, and the two heating modes can realize low nitrogen oxide emission, so that the production cost is saved;
2) the multi-section air supply inlets are arranged on the partition wall of the duplex vertical flue or the partition wall of the vertical flue, and the air supply inlets are not arranged at the bottom of the combustion chamber, so that compared with the existing sectional heating type reheating coke oven, the structure is simpler, the construction is more convenient, and the brickwork of the combustion chamber is firmer and more stable;
3) the adjustable combustion-supporting air supply amount of the adjusting bricks arranged at the multi-section air supply ports is beneficial to improving the high-direction heating uniformity of the vertical flue, reducing the generation of nitrogen oxides and reducing the atmospheric pollution.
Drawings
FIG. 1 is a schematic structural diagram of a combustion system of a complex heat type multi-stage heating coke oven of the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic view of the arrangement of the multi-stage air inlet according to the present invention.
In the figure: 1. combustion chamber 2, updraft vertical flue 3, downdraft vertical flue 4, small air flue 5, small blast furnace gas flue 6, air heat storage chamber 7, blast furnace gas heat storage chamber 8, waste gas heat storage chamber 9, coke oven gas supply inlet 10, first section air supply inlet 11, second section air supply inlet 12, third section air supply inlet 13, crossover hole 14, waste gas circulation hole 15, blast furnace gas supply inlet 16, long chute 17, short chute 18, coke oven gas branch pipe 19, double-linkage vertical flue partition 20, vertical flue partition 20
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1 and 2, the combustion system of the reheating multi-stage heating coke oven of the present invention comprises a regenerator, a chute, a combustion chamber 1, a carbonization chamber and a top area; the combustion chambers 1 and the carbonization chambers are alternately arranged, each combustion chamber 1 consists of a plurality of pairs of double vertical flues, the adjacent 2 pairs of double vertical flues are separated by double vertical flue partition walls 19, each double vertical flue comprises 2 vertical flues, and the 2 vertical flues are separated by vertical flue partition walls 20; each vertical flue is respectively provided with a coke oven gas supply inlet 9, a multi-section air supply inlet and a blast furnace gas supply inlet 15; the multi-section air supply inlets are arranged on a double-linked fire shaft partition wall 19 or a vertical fire shaft partition wall 20 on one side, wherein the first section air supply inlet 10 is arranged at the lower part of the double-linked fire shaft partition wall 19 or the vertical fire shaft partition wall 20 and is higher than the waste gas circulation holes 14; the coke oven gas inlet 9 and the blast furnace gas inlet 15 are arranged at the bottom of the vertical flue.
The double-linkage vertical flue partition wall 19 and the vertical flue partition wall 20 are respectively provided with a combustion-supporting air channel, and the combustion-supporting air channels are communicated with the corresponding vertical flues through a plurality of sections of air supply inlets; the lower end of the combustion air channel is connected with the air regenerator 6 and the corresponding small air flue 4 through a short chute 17.
As shown in fig. 3, in the same twin vertical flues, the air inlets of the same section provided on the partition walls 19 and 20 of the twin vertical flues have a height difference.
Adjusting bricks are respectively arranged at the multi-section air supply inlets.
The coke oven gas supply inlet 9 is arranged on a gas pipe brick at the bottom of the corresponding vertical flue, the coke oven gas supply inlet 9 is connected with a main coke oven gas pipeline through a coke oven gas branch pipeline 18, a coke oven gas channel is arranged in a partition wall and a chute area of the regenerative chamber and is used for the coke oven gas branch pipeline 18 to pass through, and the coke oven gas branch pipeline 18 is a straight pipe and is vertically arranged.
The blast furnace gas inlet 15 is connected with the blast furnace gas small flue 5 through the long chute 16 and the blast furnace gas regenerator 7.
The blast furnace gas supply inlet 15 is a strip-shaped hole.
The following examples are carried out on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following examples.
[ examples ] A method for producing a compound
As shown in fig. 1 and 2, in this embodiment, a reheating multi-stage heating coke oven combustion system includes a regenerator, a chute, a combustion chamber 1, a carbonization chamber and a top area, the combustion chamber 1 and the carbonization chamber are arranged alternately along a horizontal direction, the combustion chamber 1 is composed of a plurality of pairs of double vertical flues, each 2 vertical flues form a double vertical flue, each vertical flue is respectively provided with a coke oven gas inlet 9, a multi-stage air inlet and a blast furnace gas inlet 9, a multi-stage air inlet is provided on one side of a partition wall 19 of the double vertical flue corresponding to one of the vertical flues, a multi-stage air inlet is provided on a partition wall 20 of the vertical flue corresponding to the other vertical flue, and the bottoms of the 2 vertical flues are respectively provided with a coke oven gas inlet 9 and a blast furnace gas inlet 15.
In this embodiment, the blast furnace gas heating is used as an example.
In this embodiment, the multi-segment air inlets include 3 segments of air inlets, and in each dual vertical flue, a first segment air inlet 10, a second segment air inlet 11 and a third segment air inlet 12 are sequentially arranged from bottom to top on the dual vertical flue partition wall 19 and the vertical flue partition wall 20 on one side, and are used for introducing combustion-supporting air into the updraft vertical flue 2 at different heights to be mixed with fuel (blast furnace gas in this embodiment) for combustion.
In the same double-linkage vertical flue, the same section of air supply inlet on the double-linkage vertical flue partition wall 19 and the vertical flue partition wall 20 has a height difference, as shown in fig. 3, the first section of air supply inlet 10 on the vertical flue partition wall 20 is higher than the first section of air supply inlet 10 on the double-linkage vertical flue partition wall 19, and so on. The purpose is to provide a certain level difference between the air supply in the same section of the ascending air flow channel 2 and the air supply in the same section of the descending air flow channel 3.
In the embodiment, combustion-supporting air reaches each section of air supply inlet through the small air flue 4, the air regenerator 6 and the short chute 17, and each section of air supply inlet is respectively provided with an adjusting brick, so that the area of the outlet is adjustable.
In this embodiment, only the blast furnace gas inlet 15 and the coke oven gas inlet 9 are disposed at the bottom of the combustion chamber 1, wherein the coke oven gas inlet 9 is disposed on the gas pipe brick, and the blast furnace gas inlet 15 is a strip-shaped hole. The blast furnace gas reaches the bottom of the combustion chamber 1 through the blast furnace gas small flue 5, the blast furnace gas heat accumulation chamber 7 and the long chute 16, and enters the corresponding vertical flue from the blast furnace gas inlet 15.
The upper parts of 2 vertical flues of the double-linked vertical flues are communicated through a crossover hole 13, the lower parts of the two vertical flues are communicated through an exhaust gas circulating hole 14, one part of combustion exhaust gas enters each regenerative chamber through a long chute 16 and a short chute 17, and the other part of the combustion exhaust gas is mixed with ascending gas through the exhaust gas circulating hole 14. In this embodiment, 4 regenerators are provided corresponding to the double-parallel flue, one regenerator is an air regenerator 6, one regenerator is a blast furnace gas regenerator 7, and the other two regenerators are exhaust gas regenerators 8.
If the coke oven gas is adopted for heating, the coke oven gas conveyed from the coke oven gas main pipeline directly reaches the bottom of the combustion chamber 1 through the regenerator partition wall and the chute by the coke oven gas branch pipeline 18, and enters the corresponding vertical flame path from the coke oven gas supply inlet 9, and the coke oven gas branch pipeline 18 is a straight pipe, has no bending and branching structure and is vertically arranged. When blast furnace gas is used for heating, the coke oven gas branch pipe 18 is in a closed state or returned exhaust gas is introduced.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A kind of compound heat type multistage heating coke oven combustion system, the coke oven is made up of regenerator, chute, combustion chamber, charring chamber and furnace roof area; the combustion chambers and the carbonization chambers are alternately arranged, each combustion chamber consists of a plurality of pairs of duplex vertical flues, every two adjacent duplex vertical flues are separated by a partition wall of the duplex vertical flues, each duplex vertical flue comprises 2 vertical flues, and every two vertical flues are separated by a partition wall of the vertical flues; it is characterized in that each vertical flue is respectively provided with a coke oven gas supply inlet, a multi-section air supply inlet and a blast furnace gas supply inlet; the multi-section air supply inlets are arranged on the double vertical flue partition wall or the vertical flue partition wall on one side, wherein the first section air supply inlet is arranged at the lower part of the double vertical flue partition wall or the vertical flue partition wall and is higher than the waste gas circulation hole; the coke oven gas supply inlet and the blast furnace gas supply inlet are both arranged at the bottom of the vertical flue.
2. The combustion system of a reheat type multi-sectional heating coke oven as claimed in claim 1, wherein the partition wall of the double simultaneous flues and the partition wall of the vertical flues are respectively provided with a combustion air channel, and the combustion air channels are communicated with the corresponding vertical flues through multi-sectional air inlets; the lower end of the combustion-supporting air channel is connected with the air regenerator and the corresponding small air flue through a short chute.
3. The combustion system of a reheat multistage heating coke oven as set forth in claim 1, wherein the same air inlets provided in the partition wall of the duplex vertical flues and the partition wall of the vertical flues have a height difference in the same duplex vertical flues.
4. The combustion system of a reheat multistage heating coke oven as set forth in claim 1 or 2, wherein the multistage air supply ports are respectively provided with an adjusting brick.
5. The reheating multi-section heating coke oven combustion system of claim 1, wherein the coke oven gas inlet is arranged on a gas pipe brick corresponding to the bottom of the vertical flue, the coke oven gas inlet is connected with a main coke oven gas pipeline through a coke oven gas branch pipeline, a coke oven gas channel is arranged in a regenerator partition wall and a chute area for the coke oven gas branch pipeline to pass through, and the coke oven gas branch pipeline is a straight pipe and is vertically arranged.
6. The combustion system of the reheating multi-segment heating coke oven of claim 1, wherein the blast furnace gas inlet is connected with a small blast furnace gas flue through a long chute and a blast furnace gas regenerative chamber.
7. The combustion system of the reheating multi-stage heating coke oven of claim 1 or 6, wherein the blast furnace gas supply inlet is an elongated hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121033627.9U CN215250597U (en) | 2021-05-14 | 2021-05-14 | Burning system of reheating multi-section heating coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121033627.9U CN215250597U (en) | 2021-05-14 | 2021-05-14 | Burning system of reheating multi-section heating coke oven |
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| Publication Number | Publication Date |
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| CN215250597U true CN215250597U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121033627.9U Active CN215250597U (en) | 2021-05-14 | 2021-05-14 | Burning system of reheating multi-section heating coke oven |
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2021
- 2021-05-14 CN CN202121033627.9U patent/CN215250597U/en active Active
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