CN108315025B - Carbonization chamber upper space temperature adjusting structure and adjusting method - Google Patents
Carbonization chamber upper space temperature adjusting structure and adjusting method Download PDFInfo
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- CN108315025B CN108315025B CN201810296300.7A CN201810296300A CN108315025B CN 108315025 B CN108315025 B CN 108315025B CN 201810296300 A CN201810296300 A CN 201810296300A CN 108315025 B CN108315025 B CN 108315025B
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- 238000003763 carbonization Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010410 layer Substances 0.000 claims abstract description 46
- 239000011449 brick Substances 0.000 claims abstract description 35
- 230000001105 regulatory effect Effects 0.000 claims abstract description 31
- 239000000571 coke Substances 0.000 claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 238000005192 partition Methods 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 12
- 239000011229 interlayer Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 239000002912 waste gas Substances 0.000 claims description 24
- 238000004939 coking Methods 0.000 claims description 22
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000003245 coal Substances 0.000 claims description 11
- 239000003034 coal gas Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims 4
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 238000009529 body temperature measurement Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- 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 carbonization chamber upper space temperature adjusting structure and a carbonization chamber upper space temperature adjusting method, wherein the carbonization chamber and a combustion chamber of a coke oven are arranged at intervals, the combustion chamber consists of a plurality of vertical flame paths, and a viewing hole is arranged above each vertical flame path; the vertical flame paths are duplex flame paths, each group of duplex flame paths are separated by a vertical flame path partition wall, and 2 vertical flame paths of each group of duplex flame paths are separated by a duplex flame path partition wall; the top of the duplex fire channel is respectively provided with an upper layer crossing hole and a lower layer crossing hole, and a separation layer is arranged between the upper layer crossing hole and the lower layer crossing hole; the interlayer is transversely arranged in the duplex fire channel in a through length mode, and two ends of the interlayer are respectively connected with the fire channel partition walls on two sides; communication holes are respectively formed in the interlayer right below the 2 vertical flame path observation holes; an air flow regulating device is arranged in the horizontal air flow channel of the upper layer crossing hole. The invention can conveniently, quickly and accurately adjust the temperature of the upper space of the carbonization chamber; and the adjusting brick blocks in the horizontal channel of the gas flow, so that the temperature measurement of the fire channel is not influenced by the observation hole.
Description
Technical Field
The invention relates to the technical field of coke ovens, in particular to a temperature adjusting structure and a temperature adjusting method for an upper space of a carbonization chamber.
Background
The upper space temperature of the coke oven carbonization chamber is an important dimension parameter in the Jiao Lujie construction design. The upper space of the coke oven carbonization chamber has overhigh temperature, which is not beneficial to improving the quality and yield of chemical products, and can increase the generation of graphite on the top of the coke oven and influence the normal production operation of the coke oven; the temperature of the upper space of the coke oven carbonization chamber is over-bottom, which can reduce the temperature of upper coke cake, affect the upper and lower even maturation of the coke cake and affect the quality and yield of coke.
At present, the temperature of the upper space of a carbonization chamber of most coke ovens cannot be conveniently and directly adjusted, and in the actual production process, the temperature of the upper space of the carbonization chamber can be changed only by adjusting the temperature of a flame path of a combustion chamber or adjusting the coal loading quantity of the carbonization chamber, however, the adjustment of the temperature of the flame path of the combustion chamber can possibly cause high-temperature combustion accidents and increase the generation of nitrogen oxides, and the adjustment of the coal loading quantity of the carbonization chamber can influence the coke yield, so that both methods have disadvantages.
The 7.63 m top-loading coke oven designed and developed by German wood company is characterized in that the upper part of a vertical flame path of a combustion chamber is divided into an upper layer and a lower layer which are 2 layers across a hole structure, and the two layers of middle channels across the hole are covered by a millstone brick to realize the temperature regulation of the upper space of a carbonization chamber. However, after the millstone brick is covered, the vertical flame path (also a temperature measuring hole) is shielded, so that the temperature measurement of the vertical flame path cannot be carried out, and the production operation of the coke oven is seriously influenced; in addition, the gas passing amount of the upper crossing hole cannot be accurately adjusted by adopting the grinding disc brick adjustment, so that the temperature of the upper space of the carbonization chamber is easily caused to be too high, and the quality and the yield of a chemical product are affected.
Disclosure of Invention
The invention provides a structure and a method for adjusting the temperature of the upper space of a carbonization chamber, which can conveniently, rapidly and accurately adjust the temperature of the upper space of the carbonization chamber; and the adjusting brick blocks in the horizontal channel of the gas flow, so that the temperature measurement of the fire channel is not influenced by the observation hole.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the upper space temperature regulating structure of the carbonization chamber is characterized in that the carbonization chamber and the combustion chamber of the coke oven are arranged at intervals, the combustion chamber consists of a plurality of vertical flame paths, and a viewing hole is arranged above each vertical flame path; the vertical flame paths are duplex flame paths, each group of duplex flame paths are separated by a vertical flame path partition wall, and 2 vertical flame paths of each group of duplex flame paths are separated by a duplex flame path partition wall; the top of the duplex fire channel is respectively provided with an upper layer crossing hole and a lower layer crossing hole, and a separation layer is arranged between the upper layer crossing hole and the lower layer crossing hole; the interlayer is transversely arranged in the duplex fire channel in a through length mode, and two ends of the interlayer are respectively connected with the fire channel partition walls on two sides; communication holes are respectively formed in the interlayer right below the 2 vertical flame path observation holes; an air flow regulating device is arranged in the horizontal air flow channel of the upper layer crossing hole.
The width of the upper crossing hole is equal to the width of the duplex fire channel; the air flow adjusting device comprises a vertical wall and adjusting bricks; in the upper layer crossing hole, a standing wall is arranged between 2 communication holes and near one side communication hole, an adjusting hole is formed in the standing wall, an adjusting brick is movably arranged at the adjusting hole, and the adjusting brick can partially or completely seal the adjusting hole.
The adjusting holes are 1 to a plurality of.
The adjusting brick can horizontally slide along the adjusting hole under the drive of the hook extending from the viewing hole.
The lower layer crossing hole is arranged on the double-vertical flame path partition wall.
The height of the top surface of the upper crossing hole is lower than the height of the coal line of the carbonization chamber.
A carbonization chamber upper space temperature adjusting method of the carbonization chamber upper space temperature adjusting structure comprises the following steps:
1) According to the coal loading amount of the carbonization chamber, the shrinkage degree of the coal cake and the combustion temperature of the vertical flame path, and comprehensively considering the requirements of a top-loading coking process and/or a tamping coking process, designing a double-layer crossing hole structure at the top of the double-combined flame path of the combustion chamber; the targets are: under the condition of closing the upper crossing hole, 2/3 coking cycle time, the upper space temperature of the coking chamber of the coke oven is lower than 850 ℃;
2) In the normal production process after the coke oven is put into operation, the upper layer crossing hole is in a closed state; at this time, coal gas and air burn in the lower part of the vertical flame path, and waste gas generated by combustion rises to the top of the vertical flame path and enters the vertical flame path with descending air flow through the crossing hole of the lower layer;
3) When the temperature of the upper space of the carbonization chamber at the time of 2/3 coking cycle is lower than 800 ℃ after the production state of the coke oven is adjusted, extending the hook into a combustion chamber vertical fire channel adjacent to the carbonization chamber through a fire hole at the upper part of the oven top, and opening a corresponding adjusting hole by sliding an adjusting brick;
when a plurality of regulating holes are arranged, firstly opening one regulating hole, re-measuring the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle, if the temperature still does not reach the expected temperature, increasing the number of the opened regulating holes, and repeating the steps until the temperature of the upper space of the carbonization chamber reaches the required temperature;
after the adjusting holes in the upper crossing holes are opened, waste gas generated by burning coal gas and air at the lower part of the vertical flame path rises to the top of the vertical flame path, one part of the waste gas enters the vertical flame path with descending air flow through the lower crossing holes, and the other part of the waste gas enters the vertical flame path with descending air flow through the upper crossing holes, wherein the waste gas passing through the upper crossing holes has a heat transfer effect on the upper space of the carbonization chamber, so that the temperature of the upper space of the carbonization chamber is increased;
4) When the production state of the coke oven is adjusted again and the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle is higher than 850 ℃, the hook is extended into a vertical flame path of a combustion chamber adjacent to the carbonization chamber through a viewing hole at the upper part of the oven top, and the sliding adjusting brick closes the corresponding adjusting hole;
when a plurality of regulating holes are arranged, firstly closing one regulating hole, re-measuring the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle, if the temperature still does not reach the expected temperature, increasing the number of the closed regulating holes, and repeating the steps until the temperature of the upper space of the carbonization chamber reaches the required temperature;
after the adjusting holes in the upper crossing holes are closed, waste gas generated by burning coal gas and air at the lower part of the vertical flame path rises to the top of the vertical flame path, most of the waste gas enters the vertical flame path with descending air flow through the lower crossing holes, the air quantity entering the vertical flame path with descending air flow through the upper crossing holes is reduced, the heat transfer effect of the waste gas passing through the upper crossing holes on the upper space of the carbonization chamber is reduced, and the temperature of the upper space of the carbonization chamber is reduced;
5) According to actual production conditions, the temperature of the upper space of the carbonization chamber is accurately adjusted by adjusting according to the step 3) or the step 4).
Compared with the prior art, the invention has the beneficial effects that:
1) The adjusting structure is simple in structure, and the temperature of the upper space of the carbonization chamber can be conveniently and rapidly changed by changing the state of the adjusting brick;
2) Compared with the way of blocking the millstone brick in the vertical channel of the gas flow in the conventional technology, the invention adopts the adjusting brick to block in the horizontal channel of the gas flow, and the temperature measurement of the fire channel through the fire hole is not affected;
3) A plurality of adjusting holes can be arranged in one upper crossing hole according to the requirement, so that the temperature of the upper space of the carbonization chamber is accurately improved.
Drawings
FIG. 1 is a front view of a structure for regulating the temperature of an upper space of a carbonization chamber according to the present invention.
FIG. 2 is a side view of a structure for regulating the temperature of an upper space of a carbonization chamber according to the present invention.
Fig. 3 is a perspective view of a temperature adjusting structure for an upper space of a carbonization chamber according to the present invention (the adjusting hole is opened).
Fig. 4 is a perspective view II (the adjusting hole is in a closed state) of a temperature adjusting structure for the upper space of the carbonization chamber.
In the figure: 1. double-fire-channel partition wall 2, lower crossing hole 3, partition layer 4, upper crossing hole 5, vertical wall 6, regulating brick 7, regulating hole 8, fire-viewing hole 9, fire-channel 10, fire-channel partition wall 11 and communication hole
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 and 2, in the upper space temperature regulating structure of the carbonization chamber, the carbonization chamber and the combustion chamber of the coke oven are arranged at intervals, the combustion chamber consists of a plurality of vertical flame paths 9, and a viewing hole 8 is arranged above each vertical flame path 9; the vertical flame paths are duplex flame paths, each group of duplex flame paths are separated by a vertical flame path partition wall 10, and 2 vertical flame paths 9 of each group of duplex flame paths are separated by a duplex flame path partition wall 1; the top of the duplex fire channel is respectively provided with an upper layer crossing hole 4 and a lower layer crossing hole 2, and a separation layer 3 is arranged between the upper layer crossing holes 4 and the lower layer crossing holes 2; the interlayer 3 is transversely arranged in the duplex fire channel in a through length mode, and two ends of the interlayer are respectively connected with the fire channel partition walls 10 on two sides; communication holes 11 are respectively formed on the interlayer 3 right below the 2 vertical flame path observation holes 8; the upper layer crossing the horizontal air flow channel of the hole 4 is provided with an air flow regulating device.
The width of the upper crossing hole 4 is equal to the width of the duplex fire path; the air flow adjusting device comprises a vertical wall 5 and adjusting bricks 6; in the upper layer crossing hole 4, a vertical wall 5 is arranged between 2 communication holes 11 and near one side communication hole 11, an adjusting hole 7 is arranged on the vertical wall 5, an adjusting brick 6 is movably arranged at the adjusting hole 7, and the adjusting brick 6 can partially or completely seal the adjusting hole 7.
The adjusting holes 7 are 1 to a plurality.
The adjusting brick 6 can horizontally slide along the adjusting hole 7 under the drive of a hook extending from the viewing hole 8.
The lower layer crossing hole 2 is arranged on the double-vertical flame path partition wall 1.
The height of the top surface of the upper crossing hole 4 is lower than the height of the coal line of the carbonization chamber.
A carbonization chamber upper space temperature adjusting method based on the carbonization chamber upper space temperature adjusting structure comprises the following steps:
1) According to the coal loading amount of the carbonization chamber, the shrinkage degree of the coal cake and the combustion temperature of the vertical flame path, and comprehensively considering the requirements of a top-loading coking process and/or a tamping coking process, designing a double-layer crossing hole structure at the top of the double-combined flame path of the combustion chamber;
2) In the normal production process after the coke oven is put into operation, the upper layer crossing hole 4 is in a closed state; at this time, the coal gas and air burn in the lower part of the vertical flame path 9, the waste gas generated by burning rises to the top of the vertical flame path 9, and enters the vertical flame path 9 with descending air flow through the lower layer crossing hole 2;
3) When the temperature of the upper space of the carbonization chamber at the time of 2/3 coking cycle is lower than 800 ℃ after the production state of the coke oven is adjusted, the hook is extended into a combustion chamber vertical flame path 9 adjacent to the carbonization chamber through a furnace top upper viewing hole 8, and a corresponding adjusting hole 7 is opened by a sliding adjusting brick 6; (as shown in FIG. 3)
When a plurality of regulating holes 7 are arranged, firstly opening one regulating hole 7, re-measuring the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle, if the temperature still does not reach the expected temperature, increasing the number of the opened regulating holes 7, and repeating the steps until the temperature of the upper space of the carbonization chamber reaches the required temperature;
after the adjusting holes 7 in the upper crossing holes 4 are opened, waste gas generated by burning coal gas and air at the lower part of the vertical flame path 9 rises to the top of the vertical flame path 9, one part of the waste gas enters the vertical flame path 9 with descending air flow through the lower crossing holes 2, and the other part of the waste gas enters the vertical flame path 9 with descending air flow through the upper crossing holes 4, wherein the waste gas passing through the upper crossing holes 4 has a heat transfer effect on the upper space of the carbonization chamber, so that the temperature of the upper space of the carbonization chamber is increased;
4) When the production state of the coke oven is adjusted again and the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle is higher than 850 ℃, the hook is extended into a combustion chamber vertical flame path 9 adjacent to the carbonization chamber through a furnace top upper viewing hole 8, and the sliding adjusting brick 6 closes the corresponding adjusting hole; (as shown in FIG. 4)
When a plurality of regulating holes 7 are arranged, firstly closing one regulating hole 7, re-measuring the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle, if the temperature still does not reach the expected temperature, increasing the number of the closed regulating holes 7, and repeating the steps until the temperature of the upper space of the carbonization chamber reaches the required temperature;
after the adjusting holes 7 in the upper crossing holes 4 are closed, the waste gas generated by the combustion of the gas and air at the lower part of the vertical flame path 9 rises to the top of the vertical flame path 9, most of the waste gas enters the vertical flame path 9 with descending air flow through the lower crossing holes 2, the air quantity entering the vertical flame path 9 with descending air flow through the upper crossing holes 4 is reduced, the heat transfer effect of the waste gas passing through the upper crossing holes 4 on the upper space of the carbonization chamber is reduced, and the temperature of the upper space of the carbonization chamber is reduced;
5) According to actual production conditions, the temperature of the upper space of the carbonization chamber is accurately adjusted by adjusting according to the step 3) or the step 4).
As shown in fig. 3 and 4, according to the upper space temperature adjusting structure of the carbonization chamber, the adjusting hole 7 is opened or closed by sliding the adjusting brick 6, so that the adjustment of the exhaust gas flow of the upper crossing hole 4 is realized, and the adjustment of the upper space temperature of the carbonization chamber is further realized; the vertical wall 5 is arranged close to the communication hole 11 at one side, so that the adjusting brick 6 can be conveniently adjusted in a sliding way through the top fire-viewing hole 8 by using a hook.
As a specific implementation scheme of the invention, the adjusting brick 6 can be arranged on one side of the vertical wall 5, a slide way is arranged above or above and below the adjusting hole 7 on the vertical wall 5, the top or the top and the bottom of the adjusting brick 6 are correspondingly provided with slide grooves, and the integral movement and the position adjustment of the adjusting brick 6 are realized by sliding the slide grooves along the slide way; the initial position of the adjusting brick 6 is at one side of the adjusting hole 7, and the adjusting hole 7 can be covered after sliding. The adjusting brick 6 is provided with a hook hole for matching with a hook extending from the viewing hole 8. When the regulating brick 6 is provided with a chute only at the bottom, it has a shape of narrow upper part and wide lower part in the width direction, such as a trapezoid, which can increase its stability in the high direction.
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 (6)
1. The upper space temperature regulating structure of the carbonization chamber is characterized in that the carbonization chamber and the combustion chamber of the coke oven are arranged at intervals, the combustion chamber consists of a plurality of vertical flame paths, and a viewing hole is arranged above each vertical flame path; the vertical flame paths are duplex flame paths, each group of duplex flame paths are separated by a vertical flame path partition wall, and 2 vertical flame paths of each group of duplex flame paths are separated by a duplex flame path partition wall; the top of the duplex fire channel is respectively provided with an upper layer crossing hole and a lower layer crossing hole, and a separation layer is arranged between the upper layer crossing hole and the lower layer crossing hole; the double-fire-passage fire-resistant barrier is characterized in that the barrier layer is transversely arranged in the double-fire-passage in a through way, and two ends of the barrier layer are respectively connected with the fire-passage barrier walls on two sides; communication holes are respectively formed in the interlayer right below the 2 vertical flame path observation holes; an air flow regulating device is arranged in the horizontal air flow channel of the upper crossing hole; the width of the upper crossing hole is equal to the width of the duplex fire channel; the air flow adjusting device comprises a vertical wall and adjusting bricks; in the upper layer crossing hole, a standing wall is arranged between 2 communication holes and near one side communication hole, an adjusting hole is formed in the standing wall, an adjusting brick is movably arranged at the adjusting hole, and the adjusting brick can partially or completely seal the adjusting hole.
2. The structure according to claim 1, wherein the number of the regulating holes is 1 to plural.
3. The structure according to claim 1, wherein the adjusting brick is capable of sliding horizontally along the adjusting hole under the driving of the hook extending from the viewing hole.
4. The carbonization chamber upper space temperature adjustment structure according to claim 1, wherein the lower layer crossing hole is provided on a double-vertical flame path partition wall.
5. The carbonization chamber headspace temperature adjustment structure as set forth in claim 1, wherein the top surface of said upper layer crossing hole is lower than the carbonization chamber coal line height.
6. A carbonization chamber upper space temperature adjustment method based on the carbonization chamber upper space temperature adjustment structure of claim 1, characterized by comprising:
1) According to the coal loading amount of the carbonization chamber, the shrinkage degree of the coal cake and the combustion temperature of the vertical flame path, and comprehensively considering the requirements of a top-loading coking process and/or a tamping coking process, designing a double-layer crossing hole structure at the top of the double-combined flame path of the combustion chamber; the targets are: under the condition of closing the upper crossing hole, 2/3 coking cycle time, the upper space temperature of the coking chamber of the coke oven is lower than 850 ℃;
2) In the normal production process after the coke oven is put into operation, the upper layer crossing hole is in a closed state; at this time, coal gas and air burn in the lower part of the vertical flame path, and waste gas generated by combustion rises to the top of the vertical flame path and enters the vertical flame path with descending air flow through the crossing hole of the lower layer;
3) When the temperature of the upper space of the carbonization chamber at the time of 2/3 coking cycle is lower than 800 ℃ after the production state of the coke oven is adjusted, extending the hook into a combustion chamber vertical fire channel adjacent to the carbonization chamber through a fire hole at the upper part of the oven top, and opening a corresponding adjusting hole by sliding an adjusting brick;
when a plurality of regulating holes are arranged, firstly opening one regulating hole, re-measuring the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle, if the temperature still does not reach the expected temperature, increasing the number of the opened regulating holes, and repeating the steps until the temperature of the upper space of the carbonization chamber reaches the required temperature;
after the adjusting holes in the upper crossing holes are opened, waste gas generated by burning coal gas and air at the lower part of the vertical flame path rises to the top of the vertical flame path, one part of the waste gas enters the vertical flame path with descending air flow through the lower crossing holes, and the other part of the waste gas enters the vertical flame path with descending air flow through the upper crossing holes, wherein the waste gas passing through the upper crossing holes has a heat transfer effect on the upper space of the carbonization chamber, so that the temperature of the upper space of the carbonization chamber is increased;
4) When the production state of the coke oven is adjusted again and the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle is higher than 850 ℃, the hook is extended into a vertical flame path of a combustion chamber adjacent to the carbonization chamber through a viewing hole at the upper part of the oven top, and the sliding adjusting brick closes the corresponding adjusting hole;
when a plurality of regulating holes are arranged, firstly closing one regulating hole, re-measuring the temperature of the upper space of the carbonization chamber at the moment of 2/3 coking cycle, if the temperature still does not reach the expected temperature, increasing the number of the closed regulating holes, and repeating the steps until the temperature of the upper space of the carbonization chamber reaches the required temperature;
after the adjusting holes in the upper crossing holes are closed, waste gas generated by burning coal gas and air at the lower part of the vertical flame path rises to the top of the vertical flame path, most of the waste gas enters the vertical flame path with descending air flow through the lower crossing holes, the air quantity entering the vertical flame path with descending air flow through the upper crossing holes is reduced, the heat transfer effect of the waste gas passing through the upper crossing holes on the upper space of the carbonization chamber is reduced, and the temperature of the upper space of the carbonization chamber is reduced;
5) According to actual production conditions, the temperature of the upper space of the carbonization chamber is accurately adjusted by adjusting according to the step 3) or the step 4).
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| CN111057558A (en) * | 2019-12-31 | 2020-04-24 | 山东钢铁集团日照有限公司 | Application method of hydrogen-rich gas generated after LNG (liquefied Natural gas) process in coke oven heating |
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