CN114790395B - Thermal insulation process for thermal state overhaul of coke oven regenerator - Google Patents
Thermal insulation process for thermal state overhaul of coke oven regenerator Download PDFInfo
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- CN114790395B CN114790395B CN202110099714.2A CN202110099714A CN114790395B CN 114790395 B CN114790395 B CN 114790395B CN 202110099714 A CN202110099714 A CN 202110099714A CN 114790395 B CN114790395 B CN 114790395B
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- regenerator
- overhaul
- gas
- coking
- maintenance
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000571 coke Substances 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 19
- 238000009413 insulation Methods 0.000 title claims abstract description 8
- 239000011449 brick Substances 0.000 claims abstract description 35
- 238000004939 coking Methods 0.000 claims abstract description 23
- 238000012423 maintenance Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000009467 reduction Effects 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 230000001172 regenerating effect Effects 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 48
- 238000005338 heat storage Methods 0.000 claims description 12
- 239000002912 waste gas Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052716 thallium Inorganic materials 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000004321 preservation Methods 0.000 description 9
- 238000003763 carbonization Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010200 validation analysis 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B21/00—Heating of coke ovens with combustible gases
- C10B21/10—Regulating and controlling the combustion
- C10B21/16—Regulating and controlling the combustion by controlling or varying the openings between the heating flues and the regenerator flues
-
- 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
- C10B5/00—Coke ovens with horizontal chambers
- C10B5/10—Coke ovens with horizontal chambers with heat-exchange devices
- C10B5/12—Coke ovens with horizontal chambers with heat-exchange devices with regenerators
-
- 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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- 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
Abstract
The invention relates to the technical field of coking technology. A thermal insulation process for thermal overhaul of a coke oven regenerator comprises the following steps: 1) the time of starting the thermal state overhaul of the regenerator, 2) the moment of closing the gas, 3) after the sealing wall of the regenerator is opened, the suction force of the coke oven exhaust gas system is used as a power source, external cold air enters the flue through the regenerator, the small flue and the shutter, the gas circulation way enables the regenerator to be further cooled, 4) the time of dismantling the checker bricks is carried out when the surface and the inside of the checker bricks are observed by naked eyes and no obvious bright color is generated, 5) before the overhaul, the gas valves of the overhaul regenerator and the adjacent regenerators are closed, so that the safe operation of constructors in the regenerator is ensured; 6) The maintenance starting time is selected to be carried out in the middle coking stage of the coking chamber, the furnace number of the coking chamber corresponding to the maintenance regenerative chamber and the furnace number of the adjacent coking chamber are subjected to cooling treatment, and no coke is discharged before the maintenance is finished. The invention is used for overhauling and preserving heat of the regenerator, and the rapid reduction of the surface temperature of the main wall and the single wall of the regenerator is avoided.
Description
Technical Field
The invention relates to the technical field of coking technology.
Background
The coke oven regenerator is used for preheating the air quantity and the lean gas quantity required by combustion by utilizing the heat of the accumulated exhaust gas. The regenerator is positioned under the carbonization chamber, the upper part of the regenerator is connected with the combustion chamber through a chute, and the lower part of the regenerator is respectively communicated with the split flue, the lean gas pipeline and the atmosphere through an exhaust gas shutter. Regenerator configurations include head spaces, checker bricks, grate bricks (nozzle plates) and small flues, and main, single, partition and seal walls. Vertical brick coal gas passages are also arranged in the main walls of the downward-spraying type and duplex type coke ovens, and the heat storage chambers of the large-scale coke ovens adopt a cell structure to divide the heat storage chambers into a plurality of small cells so as to independently regulate coal gas and air; the air or gas regenerator is longitudinally divided, so that the sectional heating of the combustion chamber is realized. Therefore, along with the trend of large-scale development of coke ovens, the complexity of the regenerator structure is continuously improved, and accordingly, the damage degree to the regenerator structure is also increased when the regenerator is overhauled.
The method for maintaining the furnace body of the focusing furnace in a thermal state under the condition of full length can greatly reduce the damage to the masonry, and under the condition of conditional conditions, a thermal state maintenance scheme is preferably adopted. The thermal state maintenance is to keep the furnace body at a certain high temperature, so as to prevent the masonry from being rapidly cooled and greatly contracted to generate large cracks; on the other hand, a relatively suitable operating environment is created for constructors, and the overhaul of the furnace body can be smoothly carried out under the condition of wearing the heat insulation protective articles.
The thermal state overhauling and heat preservation of the regenerator is different from that of the combustion chamber and the carbonization chamber, and the slow cooling of the combustion chamber and the carbonization chamber during overhauling can be controlled by adjusting the temperature of the combustion chamber. The temperature of the regenerator cannot be reduced by adjusting the temperature of the combustion chamber when the regenerator is overhauled, and once the gas quantity is changed, the temperature of the regenerator is not reduced, but is increased to some extent, so that the high temperature in the regenerator can be caused, and the regenerator cannot be overhauled normally.
Disclosure of Invention
The invention aims at solving the problems and provides a thermal insulation process for thermal state maintenance of a coke oven regenerator, which ensures that the interior of the maintenance regenerator is provided with an environment suitable for the operation of maintenance personnel and forms thermal state protection for a coke oven brickwork.
The purpose of the invention is realized in the following way:
a thermal insulation process for thermal overhaul of a coke oven regenerator comprises the following steps:
1) The time for starting the thermal state overhaul of the regenerator is selected to be carried out when the ascending air flow is finished, the gas is closed firstly, then the regenerator sealing wall is opened, and the advanced gas reduction and temperature reduction treatment is not carried out;
2) Closing the gas moment, closing a horizontal turning plate of the waste gas shutter, cutting off a channel for overhauling the regenerator and the waste gas flue, opening the horizontal turning plate after the regenerator sealing wall is opened, and conducting air circulation of the regenerator overhauling area;
3) After the regenerator sealing wall is opened, the suction force of the coke oven exhaust gas system is used as a power source, external cold air enters the flue through the regenerator, the small flue and the shutter, and the gas circulation way enables the regenerator to be further cooled, so that the method is also a measure for guaranteeing the oxygen content of the operation area of constructors; the concrete method is that the waste gas thallium of the shutter at the overhaul side of the regenerator is supported to a height of 150-400mm, the horizontal adjusting turning plate is fully opened, and the air circulation channel is conducted;
4) The time for detaching the checker bricks is carried out when no obvious bright color exists on the surfaces and the interiors of the checker bricks by naked eyes, so that the cooling speed of the main single-wall masonry of the regenerator is prevented from being too high; immediately taking out the lattice bricks, and preserving heat on the main single walls at two sides in a mode of sticking ceramic fiber blankets; in the process of dismantling the old checker bricks, the convex bricks at the top of the internal partition wall can be pushed down in advance, so that the interior of the regenerator is slowly cooled;
5) Before overhaul, closing gas valves of the overhaul heat storage chamber and the adjacent heat storage chambers to ensure the safe operation of constructors in the heat storage chambers;
6) The maintenance starting time is selected to be carried out in the middle coking stage of the coking chamber, the furnace number of the coking chamber corresponding to the maintenance regenerative chamber and the furnace number of the adjacent coking chamber are subjected to cooling treatment, and no coke is discharged before the maintenance is finished.
Furthermore, the gas is not subjected to advanced gas reduction and temperature reduction treatment before the overhaul of the regenerator, and the gas is only closed during the start-up.
Furthermore, in the overhaul process of the regenerator, the suction force of the coke oven exhaust gas system is used as a power source and is used as a safety guarantee measure for the oxygen content of an overhaul area.
Further, in the process of removing the brick body, the 'convex' brick at the top is pushed down in advance.
The beneficial effects of the invention are as follows:
1. the invention is adopted to overhaul and preserve heat of the regenerator, the internal environment temperature of the regenerator can be controlled to be about 80 ℃, the single operation time length is more than 30 minutes after constructors wear the heat insulation clothing, and the condition of maintaining the regenerator in a thermal state can be satisfied.
2. The invention can maintain the regenerator, avoid the rapid decrease of the surface temperature of the main wall and the single wall of the regenerator, and is beneficial to the maintenance of the furnace body and the service life of the furnace body.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1: and (3) an air flow path diagram of the regenerator overhaul process.
Fig. 2: and a heat preservation measure diagram of the overhaul process of the regenerator.
The gas side regenerator comprises a regenerator sealing wall, an overhaul area air flow direction, an overhaul operation area access platform, a regenerator inner part, a small flue area, an exhaust gas shutter, an exhaust gas flue, a regenerator top convex brick, a regenerator overhaul area, a gas side regenerator and an air side regenerator, wherein the regenerator sealing wall is arranged in the regenerator sealing wall, the overhaul area air flow direction is arranged in the overhaul operation area, the overhaul operation area access platform is arranged in the regenerator, the small flue area is arranged in the regenerator, the exhaust gas shutter is arranged in the exhaust gas flue, the top convex brick of the regenerator is arranged in the regenerator, the regenerator overhaul area is arranged in the regenerator, the gas side regenerator is arranged in the regenerator, and the gas side regenerator is arranged in the gas side regenerator.
The direction of the arrow is the air flow direction.
As shown in FIG. 1, in the overhaul process of the regenerator, fresh air enters the regenerator from the regenerator sealing wall by taking the suction force of the exhaust gas flue as a power source, passes through the upper part and the lower part of the regenerator, passes through the small flue area and the exhaust gas shutter, and enters the exhaust gas flue.
After the checker bricks are removed, ceramic fiber blankets are used for preserving heat of main walls, single walls and top brickworks at two sides, and the convex bricks at the top of the internal partition wall can be pushed down in advance in the process of removing the checker bricks, so that the interior of the regenerator is cooled slowly in advance.
Detailed Description
According to the heat accumulation and heat release principles of the heat accumulation chamber, the heat accumulation chamber is cooled, insulated and ventilated by adopting a series of standard operation sequences, so that the internal environment of the heat accumulation chamber has the technical condition of thermal state maintenance, the safety of operators is ensured, and the safety, stability and longevity of a coke oven body are ensured.
1. According to the working characteristics of heat exchange of the heat storage chamber, when the interior of the heat storage chamber is downdraft, hot waste gas of the combustion chamber is discharged into a flue through the heat storage chamber and a small flue, and the heat storage chamber is in a preheating stage with rising temperature; when the regenerator is updraft, cold air and cold gas enter the chute through the small flue and the regenerator, and are combusted in the combustion chamber, and the regenerator is in a stage of heat release and temperature reduction. According to the characteristic, gas closing and heat accumulating chamber wall opening are carried out on the heat accumulating chamber at the end of the rising gas flow, and the temperature of the heat accumulating chamber is at the lowest stage, so that the heat accumulating chamber is most suitable for carrying out maintenance work. The method comprises the steps of controlling the gas closing moment at the end of the upward gas flow of the regenerator, closing the horizontal turning plate of the shutter, and opening the horizontal turning plate after opening the hole.
2. After the regenerator is perforated, the external cold air is further cooled by taking the suction force of the coke oven exhaust gas system as a power source and entering the flue through the regenerator, the small flue and the shutter; on the other hand, the method is also a key measure for guaranteeing the oxygen content of the working environment of constructors. The concrete operation is that the shutter waste gas thallium at the overhaul side of the regenerator is supported to a certain height, the horizontal adjusting turning plate is fully opened, and the ventilation channel is conducted. See fig. 1.
3. In order to prevent the cooling speed of the main single wall of the regenerator from being too high, the checker bricks are prevented from being directly removed, the checker bricks are removed when the surface temperature of the checker bricks is reduced to below 500 ℃ (when no obvious bright color exists on the surface and the inside of the checker bricks is observed by naked eyes), and then the main single walls on two sides are immediately subjected to ceramic fiber pasting and heat preservation. In order to relieve the cooling speed of the regenerator, the convex bricks at the upper part of the regenerator partition wall are pushed down in advance. As shown in fig. 2.
4. In order to ensure the safe operation of constructors in the regenerator, measures are taken to repair the regenerator and close gas valves of adjacent regenerators.
5. In order to prevent the temperature change of the combustion chamber at the upper part of the regenerator and the coking chamber from being severe, maintenance work is selected in the middle coking stage, and the furnace number of the coking chamber corresponding to the maintenance regenerator and the furnace number of the adjacent coking chamber are subjected to external measures.
Examples
During the replacement process of the checker bricks of the regenerator, the Tai steel performs heat preservation operation on the regenerator, and the concrete embodiments are as follows:
heat preservation scheme for replacing checker bricks of regenerator
The replacement operation time of the checker bricks of the regenerator is long, the gas supply of the adjacent furnace numbers is effectively cut off during the replacement period, the adjacent carbonization chambers cannot produce coke, and heat preservation measures are needed to prevent the reduction of the furnace temperature; on the other hand, in order to ensure the operation safety of operators in the limited space of the regenerator, the effective ventilation in the regenerator should be ensured to prevent the operators from choking and being injured at high temperature. The following heat preservation measures (based on the overhaul of the gas side regenerator) are specially formulated.
1. Check and repair furnace number and buffer furnace number setting
2. Time selection for overhauling and starting work
The maintenance start time is too early, coke in the carbonization chamber is mature, the furnace body is cooled too fast, and the protection of the furnace body is not facilitated. The overhaul start time is too late, so that the heat absorption of coke in the carbonization chamber is reduced, the heat transfer from the carbonization chamber to the regenerator is increased, and the construction operation is not facilitated. For this reason, the start-up time is selected to be between 12 hours and 1/2 coking time corresponding to the coking chamber furnace number. The total coking time is 25-30 hours, the 1/2 coking time is about 12-15 hours, and the coking time is related to daily production tasks and cannot be determined.
3. Gas off time validation
The gas closing time is earlier than the opening time of the regenerator sealing wall, but not more than 20 minutes.
4. Furnace body heat preservation
1. Before the regenerator seals the wall trompil, burnt side overhauls the district and should be tight all around, prevents that the junk from damaging the shutter, on the other hand, carries out the isolation to shutter upper portion heat, does benefit to workman's operation.
2. After the regenerator sealing wall is opened, 1 lattice is removed every time, and after heat preservation is carried out for 1 lattice, 1 lattice is removed again. And the wall bodies and the tops on two sides are required to be insulated by pasting fiber cotton. On one hand, the furnace body is protected, and on the other hand, the construction of workers is facilitated.
3. And in the process of removing the checker bricks, the top convex bricks can be pushed down in advance, so that the brick body is cooled.
4. After the coke side sealing wall of the regenerator is restored, the gas cock is immediately opened to restore heating, and after the normal combustion of the vertical flame path is confirmed, the suction pressure of the shutter is regulated.
5. Notice matters
The internal temperature of each overhaul regenerator is different and influenced by different seasons and furnace numbers. In order to prevent the space temperature from suddenly increasing in the overhaul process, the overhaul furnace number and the buffer furnace number are set up without permission and cannot be adjusted at will.
The above embodiments are merely examples of the present invention, but the present invention is not limited to the above embodiments, and any changes or modifications within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (1)
1. A thermal insulation process for thermal state overhaul of a coke oven regenerator is characterized in that: the method comprises the following steps:
1) The time for starting the thermal state overhaul of the regenerator is selected to be carried out when the ascending air flow is finished, the gas is closed firstly, then the regenerator sealing wall is opened, and the advanced gas reduction and temperature reduction treatment is not carried out;
2) Closing the gas moment, closing a horizontal turning plate of the waste gas shutter, cutting off a channel for overhauling the regenerator and the waste gas flue, opening the horizontal turning plate after the regenerator sealing wall is opened, and conducting air circulation of the regenerator overhauling area;
3) After the regenerator sealing wall is opened, the suction force of the coke oven exhaust gas system is used as a power source, external cold air enters the flue through the regenerator, the small flue and the shutter, and the gas circulation way enables the regenerator to be further cooled, so that the method is also a measure for guaranteeing the oxygen content of the operation area of constructors; the concrete method is that the waste gas thallium of the shutter at the overhaul side of the regenerator is supported to a height of 150-400mm, the horizontal adjusting turning plate is fully opened, and the air circulation channel is conducted;
4) The time for detaching the checker bricks is carried out when no obvious bright color exists on the surfaces and the interiors of the checker bricks by naked eyes, so that the cooling speed of the main single-wall masonry of the regenerator is prevented from being too high; immediately taking out the lattice bricks, and preserving heat on the main single walls at two sides in a mode of sticking ceramic fiber blankets; in the process of dismantling the old checker bricks, pushing down the convex bricks at the top of the internal partition wall in advance to slowly cool the interior of the regenerator;
5) Before overhaul, closing gas valves of the overhaul heat storage chamber and the adjacent heat storage chambers to ensure the safe operation of constructors in the heat storage chambers;
6) The maintenance starting time is selected to be carried out in the middle coking stage of the coking chamber, cooling treatment is carried out on the furnace number of the coking chamber corresponding to the maintenance regenerative chamber and the furnace number of the adjacent coking chamber, and no coke is discharged before the maintenance is finished;
the gas is not reduced in advance and cooled before the overhaul of the regenerator, and the gas is only closed during the start-up;
in the overhaul process of the regenerator, the suction force of the coke oven waste gas system is used as a power source and used as a safety guarantee measure for the oxygen content of an overhaul area;
in the process of dismantling the brick body, the convex brick at the top is pushed down in advance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099714.2A CN114790395B (en) | 2021-01-26 | 2021-01-26 | Thermal insulation process for thermal state overhaul of coke oven regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110099714.2A CN114790395B (en) | 2021-01-26 | 2021-01-26 | Thermal insulation process for thermal state overhaul of coke oven regenerator |
Publications (2)
| Publication Number | Publication Date |
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| CN114790395A CN114790395A (en) | 2022-07-26 |
| CN114790395B true CN114790395B (en) | 2023-12-29 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07247481A (en) * | 1994-03-09 | 1995-09-26 | Otto:Kk | Method for hot repairing of coke oven |
| WO2009024059A1 (en) * | 2007-08-20 | 2009-02-26 | Beijing East World-Great Science And Technology Co., Ltd. | An automatic control method for heating coke oven |
| CN106032469A (en) * | 2015-03-11 | 2016-10-19 | 五冶集团上海有限公司 | Coke oven regenerative chamber checker brick on-line replacing method |
| CN106753449A (en) * | 2016-12-09 | 2017-05-31 | 李洪泽 | A kind of method for clearing up coke oven chute |
| CN110117494A (en) * | 2018-02-07 | 2019-08-13 | 五冶集团上海有限公司 | A kind of method for cleaning of 5.5 meters of tamping coke furnaces chute mouth tamper |
-
2021
- 2021-01-26 CN CN202110099714.2A patent/CN114790395B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07247481A (en) * | 1994-03-09 | 1995-09-26 | Otto:Kk | Method for hot repairing of coke oven |
| WO2009024059A1 (en) * | 2007-08-20 | 2009-02-26 | Beijing East World-Great Science And Technology Co., Ltd. | An automatic control method for heating coke oven |
| CN106032469A (en) * | 2015-03-11 | 2016-10-19 | 五冶集团上海有限公司 | Coke oven regenerative chamber checker brick on-line replacing method |
| CN106753449A (en) * | 2016-12-09 | 2017-05-31 | 李洪泽 | A kind of method for clearing up coke oven chute |
| CN110117494A (en) * | 2018-02-07 | 2019-08-13 | 五冶集团上海有限公司 | A kind of method for cleaning of 5.5 meters of tamping coke furnaces chute mouth tamper |
Non-Patent Citations (3)
| Title |
|---|
| 《炼焦工艺学》编写组.《炼焦工艺学》.冶金个工业出版社,1978,第426页. * |
| 武钢7.63m焦炉蓄热室格子砖变形熔损原因探讨;杨帆;严铁军;丁颖;吴木之;;钢铁(06);第95页右栏第2节-第96页右栏第2.3节 * |
| 章白下 等编.《焦炉维修》.冶金工业出版社,1985,第270-271页. * |
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