CN114702971B - Exhaust gas distribution device of coke oven and working method thereof - Google Patents
Exhaust gas distribution device of coke oven and working method thereof Download PDFInfo
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- CN114702971B CN114702971B CN202210456005.XA CN202210456005A CN114702971B CN 114702971 B CN114702971 B CN 114702971B CN 202210456005 A CN202210456005 A CN 202210456005A CN 114702971 B CN114702971 B CN 114702971B
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- exhaust gas
- coke oven
- waste gas
- gas distribution
- adjusting
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- 239000000571 coke Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 136
- 239000002912 waste gas Substances 0.000 claims abstract description 105
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 17
- 238000005338 heat storage Methods 0.000 claims description 11
- 230000001174 ascending effect Effects 0.000 claims description 5
- 206010022000 influenza Diseases 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to an exhaust gas distribution device of a coke oven and a working method thereof, wherein the exhaust gas distribution device comprises a device body and an exhaust gas distribution mechanism; one end of the device body is connected with the small flue of the focusing furnace 1, and the other end of the device body is connected with a corresponding waste gas shutter; the bottom of the device body is provided with a back-matched waste gas inlet which is connected with a waste gas back-matched pipeline; the separator separates the corresponding end of the device body into 2 gas mixing channels; the waste gas distribution mechanism comprises a grid arranged on the partition board and a grid adjusting device arranged outside the device body. According to the invention, by arranging the waste gas distribution mechanism, the flow of waste gas entering the small flue of the coke oven is effectively controlled, the mixing effect of air and waste gas is greatly enhanced, and the long-direction heating uniformity of the coke oven is ensured; meanwhile, the number of the holes on the exhaust gas distribution device is greatly reduced, and the number of corresponding exhaust gas back-distribution branch pipes and valves is reduced, so that the occurrence rate of gas blowby is reduced, and the space occupation rate is reduced.
Description
Technical Field
The invention relates to the technical field of coke oven coking, in particular to an exhaust gas distribution device of a coke oven and a working method thereof.
Background
The waste gas exchange shutter is special exchange equipment connected with the coke oven regenerator and the coke oven flue and is used for controlling air and heating gas to enter the coke oven; when the heat accumulating chamber is provided with descending air flow, the corresponding waste gas shutter is used for discharging the burnt waste gas out of the coke oven.
At present, the coke ovens are classified into single-heating type coke ovens and double-heating type coke ovens according to different heating conditions. When the single-hot coke oven is heated by adopting coke oven gas, the single-hot coke oven is provided with an exhaust gas back-up device, and the exhaust gas back-up device comprises a fan, a pipeline and a check valve and is connected with a faucet device of an exhaust gas shutter. When the air flow in the coke oven heat storage chamber is upward air flow, the top air door of the waste gas shutter is opened, and meanwhile, the fan sucks out the combustion waste gas from the coke oven flue, and after passing through the waste gas pipeline and the check valve, the waste gas is introduced into the coke oven small flue through the opening at the bottom of the faucet device of the waste gas shutter to be mixed with air. The mixed gas enters each cell regenerator through the grate bricks. The exhaust gas back-mixing device has the function of diluting oxygen content by mixing combustion exhaust gas with air so as to realize oxygen-deficient combustion and improve the high-directional heating condition in the vertical flame path.
The conventional waste gas shutter is connected with the small flue of the coke oven by adopting a double-fork structure, and 2 branch pipes in the double-fork structure are connected with the small flue of the individual coke oven in a matched manner. When the exhaust gas back-matching mode is adopted, the bottoms of the double-fork structures are provided with holes corresponding to the small flues of the coke oven one by one, namely exhaust gas inlets; combustion waste gas enters the waste gas shutter through the waste gas inlet, but because the waste gas inlet is close to the small flue of the coke oven and the distance between the waste gas inlet and the small flue of the coke oven is small, air and waste gas are not fully mixed and enter the small flue of the coke oven, so that the mixing effect is not ideal, the oxygen content of air in the vertical flue of the coke oven is unevenly distributed, and the long-direction heating uniformity of the coke oven is poor. In addition, the bottom of two fork structures trompil volume is more, leads to corresponding exhaust duct branch pipe quantity, check valve quantity increase, and not only construction cost increases, makes the gas leak source increase to occupation area is many, inconvenient maintenance and operation.
Disclosure of Invention
The invention provides an exhaust gas distribution device of a coke oven and a working method thereof, wherein the exhaust gas distribution mechanism is arranged to effectively control the flow of exhaust gas entering a small flue of the coke oven, so that the mixing effect of air and exhaust gas is greatly enhanced, and the long-direction heating uniformity of the coke oven is ensured; meanwhile, the number of the holes on the exhaust gas distribution device is greatly reduced, and the number of corresponding exhaust gas back-distribution branch pipes and valves is reduced, so that the occurrence rate of gas blowby is reduced, and the space occupation rate is reduced.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
An exhaust gas distribution device of a coke oven comprises a device body and an exhaust gas distribution mechanism; one end of the device body is connected with a small flue of the coke oven 1 below the corresponding regenerator, and the other end of the device body is connected with a corresponding waste gas shutter; a back-up waste gas inlet is formed in the bottom of the device body close to one end of the small flue of the coke oven, and is connected with a waste gas back-up pipeline in a waste gas back-up system of the coke oven through a waste gas back-up branch pipe, and a valve is arranged on the waste gas back-up branch pipe; the device body at two sides of the back-matched waste gas inlet is internally provided with a baffle plate respectively to divide the corresponding end of the device body into 2 gas mixing channels; the waste gas distribution mechanism comprises a grid arranged on the partition board and a grid adjusting device arranged outside the device body.
The device body consists of a shell, a partition board and a sealing board; the shell consists of a rectangular box body and a quadrangular frustum pyramid box body which are connected; the outer end of the rectangular box body is connected with a corresponding waste gas shutter, and the outer end of the quadrangular frustum-shaped box body is connected with a corresponding small flue of the coke oven; the outer end of the quadrangular frustum pyramid-shaped box body is provided with a sealing plate, and the sealing plate is provided with faucet holes at positions corresponding to2 coke oven small flues; the 2 baffles are symmetrically arranged at two sides of the back-matched waste gas inlet in the quadrangular frustum pyramid box body, and the quadrangular frustum pyramid box body, the 2 baffles and the sealing plate form a closed structure with a triangular cross section.
The outer end of the rectangular box body is connected with the corresponding waste gas shutter through a flange; the outer end of the quadrangular frustum pyramid-shaped box body is connected with the corresponding small flue of the coke oven in a socket joint mode, and a sealing structure is arranged at the socket joint.
The back-matched waste gas inlet is connected with the waste gas back-matched branch pipe through a flange.
The device body is made of cast iron.
The grids comprise vertical grids arranged on the left side and the right side and horizontal grids arranged on the upper side and the lower side; a plurality of strip-shaped fixed ventilation openings are formed in the vertical grid along the vertical direction; the horizontal grille consists of a plurality of rotatable blades arranged in parallel.
The grid adjusting device consists of an adjusting rod, an adjusting handle, an adjusting bracket, a locking mechanism and an angle ruler; the adjustable blades are connected in series by the adjusting rod, and the upper end of the adjusting rod penetrates out of the top of the shell; the adjusting bracket is arranged at the top of the shell, the middle part of the adjusting handle is hinged with the adjusting bracket through a rotating shaft, and one end of the adjusting handle is hinged with the upper end of the adjusting rod; the adjusting bracket is provided with a rotating shaft locking mechanism and an angle ruler.
The working method of the waste gas distribution device of the coke oven is used for realizing waste gas back distribution of the coke oven; the method comprises the following steps:
1) When the air flow in the vertical flame path of the coke oven combustion chamber is changed into ascending air flow, an air door corresponding to the exhaust gas shutter is opened, and simultaneously, the exhaust gas in the exhaust gas return pipeline enters the corresponding exhaust gas distribution device through the exhaust gas return branch pipe; the angle of a horizontal grid in the waste gas distribution mechanism is adjusted in advance, waste gas is guided by the grid, then enters a gas mixing channel to be mixed with air flowing in through a waste gas shutter in a staggered way, and finally enters a corresponding small flue of the coke oven;
2) When the air flow in the vertical flame path of the coke oven combustion chamber is changed into descending air flow, the valve on the corresponding exhaust gas back-up branch pipe is closed, and the exhaust gas in the small flue of the coke oven directly flows into the corresponding exhaust gas shutter through the exhaust gas distribution device.
A working method of an exhaust gas distribution device of a coke oven is used for realizing external adjustment of the coke oven; the method comprises the following steps:
1) When the air flow in the vertical flame path of a certain coke oven combustion chamber is changed into ascending air flow, an air door corresponding to the exhaust gas shutter is opened, and meanwhile, the exhaust gas in the exhaust gas matching pipeline enters the corresponding exhaust gas distribution device through the exhaust gas matching branch pipe;
2) When the mixing amount of the waste gas in the corresponding heat storage chamber needs to be reduced, the adjusting handle drives the adjusting rod to adjust the rotating angle of the horizontal grating, so that the opening degree of the horizontal grating is reduced, and the adjusting amount is controlled through the angle gauge, so that the mixing amount of the waste gas is reduced to a set level;
3) When the mixing amount of the waste gas in the corresponding heat storage chamber needs to be increased, the adjusting handle drives the adjusting rod to adjust the rotating angle of the horizontal grating, so that the opening degree of the horizontal grating is increased, the adjusting amount is controlled through the angle gauge, and the mixing amount of the waste gas is increased to the set level.
Compared with the prior art, the invention has the beneficial effects that:
1) The exhaust gas back-distribution device is arranged by 1 corresponding to each small flue of the coke oven, only one back-distribution exhaust gas inlet is arranged at the bottom, the number of holes, the number of exhaust gas back-distribution branch pipes and the number of corresponding valves are greatly reduced, the occurrence rate of gas blowby is reduced, the cost is saved, and the overall space occupation rate of the exhaust gas back-distribution device is reduced;
2) The exhaust gas distribution device is provided with 2 groups of exhaust gas distribution mechanisms, the flow guiding directions of the exhaust gas and the air inflow directions are staggered, the mixing effect of the air and the exhaust gas is enhanced, and the air and the exhaust gas can be fully mixed, so that the long-direction heating uniformity of the coke oven is ensured;
3) Each group of waste gas distribution mechanisms can control the airflow velocity of the small smoke entering the coke oven by independently adjusting the opening of the corresponding horizontal grid, thereby controlling the flow of combustion-supporting gas entering the small smoke channel of the coke oven and avoiding the condition of insufficient combustion-supporting air in the vertical flame path;
4) The device body of the waste gas distribution device adopts a closed pipe body structure, is connected with the corresponding 1 focusing furnace small flue in a socket fit manner, and is provided with a sealing structure, so that the burner can be effectively prevented from leaking.
Drawings
Fig. 1 is a schematic view of the installation position of the exhaust gas distribution apparatus according to the present invention.
Fig. 2 is a schematic perspective view of an exhaust gas distribution apparatus according to the present invention.
Fig. 3 is a top view of the exhaust gas distribution apparatus of the present invention.
Fig. 4 is a B-B view in fig. 3.
Fig. 5 is a C-C view of fig. 3.
In the figure: 1. the exhaust gas recirculation device 11 comprises a device body 11-1, a rectangular box 11-2, a quadrangular frustum-shaped box 11-3, a sealing plate 11-4, a faucet 11-5, a recirculation exhaust gas inlet 12, an exhaust gas distribution mechanism 12-1, a horizontal grid 12-2, a vertical grid 12-3, an adjusting rod 12-4, an adjusting handle 12-5, an angle gauge 2, a coke oven small flue 3, an exhaust gas shutter 4, an exhaust gas recirculation pipe 5, and an exhaust gas recirculation branch pipe
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
As shown in fig. 1 to 5, the exhaust gas distribution device for a coke oven according to the present invention comprises a device body 11 and an exhaust gas distribution mechanism 12; one end of the device body 11 is connected with the small flue 2 of the coke oven below the corresponding regenerator, and the other end of the device body 11 is connected with the corresponding waste gas shutter 3; a back-matched waste gas inlet 11-5 is formed at the bottom of the device body 11 near one end of the coke oven small flue 2, and is connected with a waste gas back-matched pipeline 4 in a coke oven waste gas back-matched system through a waste gas back-matched branch pipe 5, and a valve is arranged on the waste gas back-matched branch pipe 5; the device body 11 at two sides of the back-matched waste gas inlet 11-5 is respectively provided with a baffle plate to divide the corresponding end of the device body 11 into 2 gas mixing channels; the exhaust gas distribution mechanism 12 includes a grill provided on the partition board and a grill adjusting device provided outside the device body 11.
The device body 11 consists of a shell, a partition plate and a sealing plate 11-3; the shell consists of a rectangular box body 11-1 and a quadrangular frustum pyramid box body 11-2 which are connected; the outer end of the rectangular box body 11-1 is connected with a corresponding waste gas shutter 3, and the outer end of the quadrangular frustum pyramid box body 11-2 is connected with a corresponding coke oven small flue 2; the outer end of the quadrangular frustum pyramid-shaped box body 11-2 is provided with a sealing plate 11-3, and the sealing plate 11-3 is provided with faucet sockets at positions corresponding to 2 coke oven small flues 2; the 2 partition plates are symmetrically arranged at two sides of the back-matched exhaust gas inlet 11-5 in the quadrangular frustum pyramid-shaped box body 11-2, and the quadrangular frustum pyramid-shaped box body 11-2, the 2 partition plates and the sealing plate 11-3 form a closed structure with a triangular cross section.
The outer end of the rectangular box body 11-1 is connected with the corresponding waste gas shutter 3 through a flange; the outer end of the quadrangular frustum pyramid-shaped box body 11-2 is connected with the corresponding small flue 2 of the coke oven in a socket joint mode, and a sealing structure is arranged at the socket joint.
The back-matched exhaust gas inlet 11-5 is connected with the exhaust gas back-matched branch pipe 5 through a flange.
The device body 11 is made of cast iron.
The grids comprise vertical grids 12-2 arranged on the left side and the right side and horizontal grids 12-1 arranged on the upper side and the lower side; the vertical grille 12-2 is vertically provided with a plurality of strip-shaped fixed ventilation openings; the horizontal grid 12-1 is comprised of a plurality of rotatable blades arranged in parallel.
The grid adjusting device consists of an adjusting rod 12-3, an adjusting handle 12-4, an adjusting bracket, a locking mechanism and an angle ruler 12-5; the rotatable blades are strung together by the adjusting rod 12-3, and the upper end of the adjusting rod 12-3 penetrates out of the top of the shell; the adjusting bracket is arranged at the top of the shell, the middle part of the adjusting handle 12-4 is hinged with the adjusting bracket through a rotating shaft, and one end of the adjusting handle 12-4 is hinged with the upper end of the adjusting rod 12-3; the adjusting bracket is provided with a rotating shaft locking mechanism and an angle gauge 12-5.
The working method of the waste gas distribution device of the coke oven is used for realizing waste gas back distribution of the coke oven; the method comprises the following steps:
1) When the air flow in the vertical flame path of the coke oven combustion chamber is changed into upward air flow, the air door of the corresponding waste gas shutter 3 is opened, and waste gas in the waste gas return pipeline 4 enters the corresponding waste gas distribution device 1 through the waste gas return branch pipe 5; the angle of the horizontal grille 12-1 in the waste gas distribution mechanism 12 is adjusted in advance, waste gas is guided by the grille, then enters the gas mixing channel to be mixed with air flowing in through the waste gas shutter 3 in a staggered way, and finally enters the corresponding small flue 2 of the coke oven;
2) When the air flow in the vertical flame path of the coke oven combustion chamber is changed into descending air flow, the valve on the corresponding exhaust gas back-up branch pipe 5 is closed, and the exhaust gas in the small flue 2 of the coke oven directly flows into the corresponding exhaust gas shutter 3 through the exhaust gas distribution device 1.
A working method of an exhaust gas distribution device of a coke oven is used for realizing external adjustment of the coke oven; the method comprises the following steps:
1) When the air flow in the vertical flame path of a certain coke oven combustion chamber is changed into ascending air flow, an air door corresponding to the exhaust gas shutter 3 is opened, and simultaneously, the exhaust gas in the exhaust gas matching pipeline 4 enters the corresponding exhaust gas distribution device 1 through the exhaust gas matching branch pipe 5;
2) When the mixing amount of the waste gas in the corresponding heat storage chamber needs to be reduced, the adjusting handle 12-4 drives the adjusting rod 12-3 to adjust the rotating angle of the horizontal grating 12-1, so that the opening degree of the horizontal grating 12-1 is reduced, and the adjusting amount is controlled through the angle gauge 12-5, so that the mixing amount of the waste gas is reduced to a set level;
3) When the mixing amount of the waste gas in the corresponding heat storage chamber needs to be increased, the adjusting handle 12-4 drives the adjusting rod 12-3 to adjust the rotating angle of the horizontal grating 12-1, so that the opening degree of the horizontal grating 12-1 is increased, and the adjusting amount is controlled through the angle gauge 12-5, so that the mixing amount of the waste gas is increased to a set level.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present invention, but the scope of the present invention is not limited to the following examples.
[ Example 1]
In this embodiment, one end of the exhaust gas distributing device 1 is connected to the exhaust gas shutter 3, and the other end is simultaneously connected to a small flue 2 of the coke oven in a matching manner. The bottom of the device body 11 is provided with a back-matched waste gas inlet 11-5 which is connected with a waste gas back-matched branch pipe 5, and the waste gas back-matched branch pipe 5 is connected with a waste gas back-matched pipeline 4.
1 Partition board is respectively arranged on the device body 11 at two sides of the back-matched waste gas inlet 11-5, grids are respectively arranged on the partition boards, each grid comprises a horizontal grid 12-1 at the upper side and the lower side and a vertical grid 12-2 at the left side and the right side, and a plurality of layers of blades forming the vertical grid 12-2 are fixedly arranged, namely, the vertical grids are of a fixed opening structure; the multi-layer blades forming the horizontal grating 12-1 are rotatable blades, the corresponding ends of the rotatable blades are connected with the same adjusting rod 12-3, and the top end of the adjusting rod 12-3 is connected with the adjusting handle 12-4 at the upper part of the device body 11. The adjusting principle is similar to that of a shutter.
In this embodiment, the device body 11 is an iron casting. The back-matched waste gas inlet 11-5 is connected with the waste gas back-matched branch pipe 5 by adopting flange fit. The device body 11 and the waste gas shutter 3 are connected by adopting flange fit. The refractory brick interface of the device body 11 and the corresponding end of the coke oven small flue 2 is installed in a socket joint mode and is sealed by a sealing material.
When the airflow in the vertical flame path of the coke oven combustion chamber changes to rise, the air door corresponding to the exhaust gas shutter 3 is opened, and meanwhile, the exhaust gas enters the exhaust gas distribution device 1 through the exhaust gas distribution branch pipe 5, and the exhaust gas is mixed with the air in a staggered way after being guided by the exhaust gas distribution mechanism 12, then enters the corresponding small flue 2 of the coke oven, finally enters the combustion chamber through the heat storage chamber, so that the lean oxygen combustion is realized, and the generation of nitrogen oxides is reduced. When the air flow in the corresponding combustion chamber vertical fire channel is changed into descending air flow, the valve on the exhaust gas back-distribution branch pipe 5 is closed, and the exhaust gas directly flows into the exhaust gas shutter 3 through the exhaust gas back-distribution device 1.
[ Example 2]
In this embodiment, the coke oven is an externally adjustable coke oven; the exhaust gas distribution device 1 is used for regulating the mixing amount of exhaust gas in a single heat storage chamber outside the coke oven.
When the air flow in a combustion chamber vertical fire channel is changed into upward air flow, the air door corresponding to the exhaust gas shutter 3 is opened, and simultaneously, the exhaust gas enters the exhaust gas distribution device 1 through the exhaust gas matching branch pipe 5. When the mixing amount of the waste gas in a certain heat storage chamber needs to be reduced, the adjusting handle 12-4 is pressed down to drive the adjusting rod 12-3 to move upwards, the adjusting amount is controlled through the angle gauge 12-5, the adjusting rod 12-3 drives each layer of rotatable blades of the horizontal grating 12-1 to simultaneously overturn and reduce the opening degree of the rotatable blades, and the waste gas distribution proportion in the waste gas distribution device 1 is changed, so that the mixing amount of the waste gas is reduced.
Similarly, when the mixing amount of the waste gas in a certain heat storage chamber needs to be increased, only the adjusting handle 12-4 is lifted to drive the adjusting rod 12-3 to move downwards, the adjusting amount is controlled through the angle gauge 12-5, the adjusting rod 12-3 drives each layer of rotatable blades of the horizontal grating 12-1 to simultaneously overturn and increase the opening degree of the rotatable blades, and the waste gas distribution proportion in the waste gas distribution device 1 is changed, so that the mixing amount of the waste gas is increased.
The waste gas is mixed with air in a staggered way after being guided by the grids, then enters the corresponding small flue 2 of the coke oven, enters the combustion chamber after passing through the regenerator, and realizes lean oxygen combustion, and reduces the generation of nitrogen oxides.
The method comprises the following steps of:
1) Finding the exhaust gas shutter 3 corresponding to the regenerator of the exhaust gas mixing amount to be adjusted, checking whether the air door of the exhaust gas shutter 3 is opened, and confirming whether the valve on the corresponding exhaust gas return branch pipe 5 is normally opened.
2) Recording angles of angle scales 12-5 corresponding to adjusting handles 12-4 in 2 waste gas distribution mechanisms 11 corresponding to the waste gas distribution device 1;
3) The opening of the corresponding horizontal grating 12-1 is increased through one adjusting handle 12-4, after the adjusting handle 12-4 is operated in place, the other adjusting handle 12-4 is reversely adjusted, and the adjusting angle value is the same as that of the previous adjusting handle, namely, the opening of the other horizontal grating 12-1 is reduced;
4) After the adjustment is finished, the specific adjustment value of the adjustment handle 12-4 in the exhaust gas distribution device 1 is recorded, so that the mixing amount of the exhaust gas of all the regenerators of the coke oven can be adjusted conveniently, and finally, the combustion condition of each combustion chamber is controlled to achieve an ideal state.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (7)
1. An exhaust gas distribution device of a coke oven is characterized by comprising a device body and an exhaust gas distribution mechanism; the device body consists of a shell, a partition board and a sealing board; the shell consists of a rectangular box body and a quadrangular frustum pyramid box body which are connected; the outer end of the rectangular box body is connected with a corresponding waste gas shutter, and the outer end of the quadrangular frustum-shaped box body is connected with a corresponding small flue of the coke oven; the outer end of the quadrangular frustum pyramid-shaped box body is provided with a sealing plate, and the sealing plate is provided with faucet holes at positions corresponding to 2 coke oven small flues; the 2 partition plates are symmetrically arranged at two sides of the back-matched waste gas inlet in the quadrangular frustum pyramid box body, and the quadrangular frustum pyramid box body, the 2 partition plates and the sealing plate form a closed structure with a triangular cross section; one end of the device body is connected with a small flue of the coke oven 1 below the corresponding regenerator, and the other end of the device body is connected with a corresponding waste gas shutter; a back-up waste gas inlet is formed in the bottom of the device body close to one end of the small flue of the coke oven, and is connected with a waste gas back-up pipeline in a waste gas back-up system of the coke oven through a waste gas back-up branch pipe, and a valve is arranged on the waste gas back-up branch pipe; the device body at two sides of the back-matched waste gas inlet is internally provided with a baffle plate respectively to divide the corresponding end of the device body into 2 gas mixing channels; the waste gas distribution mechanism comprises a grid arranged on the partition board and a grid adjusting device arranged outside the device body; the grids comprise vertical grids arranged on the left side and the right side and horizontal grids arranged on the upper side and the lower side; a plurality of strip-shaped fixed ventilation openings are formed in the vertical grid along the vertical direction; the horizontal grille consists of a plurality of rotatable blades arranged in parallel.
2. The exhaust gas distribution apparatus of a coke oven according to claim 1, wherein the outer end of the rectangular case is connected with the corresponding exhaust gas shutter through a flange; the outer end of the quadrangular frustum pyramid-shaped box body is connected with the corresponding small flue of the coke oven in a socket joint mode, and a sealing structure is arranged at the socket joint.
3. The exhaust gas distribution device of a coke oven according to claim 1, wherein the back-up exhaust gas inlet is connected to the exhaust gas back-up branch pipe by a flange.
4. The exhaust gas distribution device of a coke oven of claim 1, wherein the device body is cast iron.
5. The exhaust gas distribution device of a coke oven according to claim 1, wherein the grill adjusting device is composed of an adjusting lever, an adjusting handle, an adjusting bracket, a locking mechanism and an angle gauge; the adjustable blades are connected in series by the adjusting rod, and the upper end of the adjusting rod penetrates out of the top of the shell; the adjusting bracket is arranged at the top of the shell, the middle part of the adjusting handle is hinged with the adjusting bracket through a rotating shaft, and one end of the adjusting handle is hinged with the upper end of the adjusting rod; the adjusting bracket is provided with a rotating shaft locking mechanism and an angle ruler.
6. The method of operating an exhaust gas distribution apparatus for a coke oven as recited in any one of claims 1 to 5, wherein the exhaust gas distribution apparatus is adapted to effect a back-up of the coke oven; the method comprises the following steps:
1) When the air flow in the vertical flame path of the coke oven combustion chamber is changed into ascending air flow, an air door corresponding to the exhaust gas shutter is opened, and simultaneously, the exhaust gas in the exhaust gas return pipeline enters the corresponding exhaust gas distribution device through the exhaust gas return branch pipe; the angle of a horizontal grid in the waste gas distribution mechanism is adjusted in advance, waste gas is guided by the grid, then enters a gas mixing channel to be mixed with air flowing in through a waste gas shutter in a staggered way, and finally enters a corresponding small flue of the coke oven;
2) When the air flow in the vertical flame path of the coke oven combustion chamber is changed into descending air flow, the valve on the corresponding exhaust gas back-up branch pipe is closed, and the exhaust gas in the small flue of the coke oven directly flows into the corresponding exhaust gas shutter through the exhaust gas distribution device.
7. The method of operating an exhaust gas distribution device for a coke oven according to any one of claims 1 to 5, characterized in that it is used to achieve external regulation of the coke oven; the method comprises the following steps:
1) When the air flow in the vertical flame path of a certain coke oven combustion chamber is changed into ascending air flow, an air door corresponding to the exhaust gas shutter is opened, and meanwhile, the exhaust gas in the exhaust gas matching pipeline enters the corresponding exhaust gas distribution device through the exhaust gas matching branch pipe;
2) When the mixing amount of the waste gas in the corresponding heat storage chamber needs to be reduced, the adjusting handle drives the adjusting rod to adjust the rotating angle of the horizontal grating, so that the opening degree of the horizontal grating is reduced, and the adjusting amount is controlled through the angle gauge, so that the mixing amount of the waste gas is reduced to a set level;
3) When the mixing amount of the waste gas in the corresponding heat storage chamber needs to be increased, the adjusting handle drives the adjusting rod to adjust the rotating angle of the horizontal grating, so that the opening degree of the horizontal grating is increased, the adjusting amount is controlled through the angle gauge, and the mixing amount of the waste gas is increased to the set level.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137009A (en) * | 1990-10-31 | 1992-08-11 | Heribert Posch | Combustion device for wood and coal |
| JPH0581255U (en) * | 1992-04-10 | 1993-11-05 | 住友金属工業株式会社 | Lattice dust remover for coke dry fire extinguishing equipment |
| RU2036400C1 (en) * | 1991-06-03 | 1995-05-27 | Виктор Яковлевич Пряхин | Device for wood drying |
| KR20070031587A (en) * | 2005-09-15 | 2007-03-20 | 재단법인 포항산업과학연구원 | Method for reversing of coke oven |
| CN103968372A (en) * | 2013-01-28 | 2014-08-06 | 阿尔斯通技术有限公司 | Fluid distribution and mixing grid for mixing gases |
| CN203820822U (en) * | 2014-05-12 | 2014-09-10 | 陈维汉 | Coal gas and air grille premixing and ejection suction preheating combustion combustor |
| CN204275831U (en) * | 2014-08-21 | 2015-04-22 | 佛山市中豹科技发展有限公司 | A kind of gas mixer |
| CN206508804U (en) * | 2016-12-29 | 2017-09-22 | 大唐环境产业集团股份有限公司 | A kind of Novel SCR Benitration reactor fairing |
| CN107213809A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | The method that oxygen is mixed with fuel gas eddy flow |
| CN108034436A (en) * | 2017-12-05 | 2018-05-15 | 太原理工大学 | A kind of coke furnace system and its application |
| CN111286346A (en) * | 2020-03-26 | 2020-06-16 | 南京龙源环保有限公司 | Flue gas blending system and method for coke oven |
| CN211514106U (en) * | 2019-11-18 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Box-type ammonia air mixer |
| CN217230611U (en) * | 2022-04-28 | 2022-08-19 | 中冶焦耐(大连)工程技术有限公司 | Waste gas distribution device of coke oven |
-
2022
- 2022-04-28 CN CN202210456005.XA patent/CN114702971B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5137009A (en) * | 1990-10-31 | 1992-08-11 | Heribert Posch | Combustion device for wood and coal |
| RU2036400C1 (en) * | 1991-06-03 | 1995-05-27 | Виктор Яковлевич Пряхин | Device for wood drying |
| JPH0581255U (en) * | 1992-04-10 | 1993-11-05 | 住友金属工業株式会社 | Lattice dust remover for coke dry fire extinguishing equipment |
| KR20070031587A (en) * | 2005-09-15 | 2007-03-20 | 재단법인 포항산업과학연구원 | Method for reversing of coke oven |
| CN103968372A (en) * | 2013-01-28 | 2014-08-06 | 阿尔斯通技术有限公司 | Fluid distribution and mixing grid for mixing gases |
| CN203820822U (en) * | 2014-05-12 | 2014-09-10 | 陈维汉 | Coal gas and air grille premixing and ejection suction preheating combustion combustor |
| CN204275831U (en) * | 2014-08-21 | 2015-04-22 | 佛山市中豹科技发展有限公司 | A kind of gas mixer |
| CN107213809A (en) * | 2016-03-22 | 2017-09-29 | 中国石油化工股份有限公司 | The method that oxygen is mixed with fuel gas eddy flow |
| CN206508804U (en) * | 2016-12-29 | 2017-09-22 | 大唐环境产业集团股份有限公司 | A kind of Novel SCR Benitration reactor fairing |
| CN108034436A (en) * | 2017-12-05 | 2018-05-15 | 太原理工大学 | A kind of coke furnace system and its application |
| CN211514106U (en) * | 2019-11-18 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Box-type ammonia air mixer |
| CN111286346A (en) * | 2020-03-26 | 2020-06-16 | 南京龙源环保有限公司 | Flue gas blending system and method for coke oven |
| CN217230611U (en) * | 2022-04-28 | 2022-08-19 | 中冶焦耐(大连)工程技术有限公司 | Waste gas distribution device of coke oven |
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