CN114790395A - Heat preservation process for thermal state overhaul of coke oven regenerator - Google Patents
Heat preservation process for thermal state overhaul of coke oven regenerator Download PDFInfo
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- CN114790395A CN114790395A CN202110099714.2A CN202110099714A CN114790395A CN 114790395 A CN114790395 A CN 114790395A CN 202110099714 A CN202110099714 A CN 202110099714A CN 114790395 A CN114790395 A CN 114790395A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000571 coke Substances 0.000 title claims abstract description 30
- 238000004321 preservation Methods 0.000 title claims abstract description 19
- 239000011449 brick Substances 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 28
- 238000012423 maintenance Methods 0.000 claims abstract description 25
- 238000004939 coking Methods 0.000 claims abstract description 21
- 230000001172 regenerating effect Effects 0.000 claims abstract description 19
- 239000002912 waste gas Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000003034 coal gas Substances 0.000 claims abstract description 11
- 238000005338 heat storage Methods 0.000 claims description 24
- 230000001174 ascending effect Effects 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- 239000000835 fiber 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
- 230000000007 visual effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 description 10
- 238000003763 carbonization Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010583 slow cooling Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation 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
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B29/00—Other details of coke ovens
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to the technical field of coking process. A heat preservation process for thermal state overhaul of a regenerative chamber of a coke oven comprises the following steps: 1) the method comprises the following steps of 1) starting the thermal storage chamber in a thermal state overhaul, 2) closing coal gas, 3) taking the suction force of a coke oven waste gas system as a power source after a sealing wall of the thermal storage chamber is opened, allowing outside cold air to enter a flue through the thermal storage chamber, a small flue and a shutter, and further cooling the thermal storage chamber through the gas circulation way, 4) removing a checker brick for time, and observing the surface and the interior of the checker brick by naked eyes when no obvious bright color exists, and 5) closing valves of the overhaul thermal storage chamber and the adjacent thermal storage chamber coal gas before overhaul to ensure the safe operation of constructors in the thermal storage chamber; 6) the maintenance starting time is selected to be carried out in the middle coking period of the coking chamber, the furnace number of the coking chamber corresponding to the maintenance regenerator and the furnace number of the adjacent coking chamber are cooled, and coke is not discharged before the maintenance is finished. The invention is adopted to maintain the heat of the regenerator, and avoid the rapid reduction of the surface temperature of the main wall and the single wall of the regenerator.
Description
Technical Field
The invention relates to the technical field of coking process.
Background
The coke oven regenerator is used for preheating the air quantity and the lean coal gas quantity required by combustion by utilizing the heat of accumulated waste gas. The heat accumulating chamber is located right below the carbonizing chamber, and is connected via inclined channel to the combustion chamber and communicated via waste gas shutter to the gas distributing flue, lean gas pipeline and atmosphere. The regenerator configuration includes a headspace, checker bricks, grate bricks (nozzle plates) and small flues as well as main, single, partition and closure walls. Vertical brick gas channels are also arranged in the main walls of the down-spraying and compound coke ovens, and a regenerator of a large coke oven adopts a cellular structure and is divided into a plurality of small cells, so that gas and air are independently regulated; the air or gas regenerator is divided longitudinally to realize the sectional heating of the combustor. Therefore, along with the trend of large-scale development of the coke oven, the complexity of the structure of the regenerative chamber is continuously improved, and the damage degree of the structure of the regenerative chamber is also increased when the regenerative chamber is correspondingly overhauled.
The method of thermal state maintenance is adopted for the coke oven body under the condition of full length, the damage to the masonry can be greatly reduced, and a thermal state maintenance scheme is adopted under the condition. The thermal state maintenance means that the furnace body is subjected to heat preservation treatment when a certain high-temperature condition of the furnace body is maintained, and on one hand, the brickwork is prevented 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 furnace body can be smoothly overhauled under the condition of wearing the heat-insulation protective articles.
The heat storage chamber is maintained and insulated in a thermal state, is different from the combustion chamber and the carbonization chamber, and the slow cooling during the maintenance of the combustion chamber and the carbonization chamber can be controlled by adjusting the temperature of the combustion chamber. And the slow cooling of regenerator when overhauing can not realize through adjusting the combustion chamber temperature, in case the gas volume changes, the temperature of regenerator not only can not reduce, still can rise on the contrary, can cause the inside high temperature of regenerator, unable normal tissue overhauls.
Disclosure of Invention
The invention aims to solve the problems and provides a heat preservation process for thermal state overhaul of a coke oven regenerator, which ensures that the interior of the overhaul regenerator has an environment suitable for operation of overhaul personnel and simultaneously forms thermal state protection for the coke oven brickwork.
The purpose of the invention is realized by the following steps:
a heat preservation process for thermal state overhaul of a regenerative chamber of a coke oven comprises the following steps:
1) the thermal state overhaul start-up time of the regenerator is selected to be carried out when the ascending airflow is finished, the coal gas is firstly closed, then the regenerator sealing wall is opened, and the advanced coal gas reduction and temperature reduction treatment is not carried out;
2) when the coal gas is closed, the horizontal turning plate of the waste gas shutter is closed at the same time, a channel for overhauling the regenerative chamber and the waste gas flue is cut off, the horizontal turning plate is opened after the sealing wall of the regenerative chamber is opened, and the air circulation of the overhauling area of the regenerative chamber is conducted;
3) after the sealing wall of the regenerator is opened, the suction force of a coke oven exhaust gas system is taken as a power source, outside cold air enters the flue through the regenerator, the small flue and the shutter, and the gas circulation way further cools the regenerator and is also a measure for ensuring the oxygen content in the operation area of constructors; the method specifically comprises the steps of supporting the waste gas thallium of the shutter at the overhaul side of the regenerator by the height of 150-400mm, opening all the horizontal adjusting turning plates and conducting an air circulation channel;
4) removing the checker bricks when no obvious bright color exists on the surface and inside of the checker bricks through visual observation so as to prevent the temperature reduction speed of the main single-wall brickwork of the regenerator from being too high; after the checker bricks are detached, the main single walls on the two sides are immediately insulated in a way of sticking ceramic fiber blankets; in the process of removing the old checker bricks, the convex bricks at the top of the internal partition wall can be pushed down in advance, so that the temperature in the regenerator is slowly reduced;
5) before maintenance, the gas valves of the maintenance regenerator and the adjacent regenerators are closed to ensure the safe operation of constructors in the regenerators;
6) the maintenance starting time is selected to be carried out in the middle coking period of the coking chamber, the furnace number of the coking chamber corresponding to the maintenance regenerator and the furnace number of the adjacent coking chamber are cooled, and coke is not discharged before the maintenance is finished.
Furthermore, the advanced gas reduction and temperature reduction treatment is not carried out before the heat storage chamber is overhauled, and the gas is only closed when the heat storage chamber is started.
Furthermore, in the process of overhauling the regenerator, the suction force of the coke oven exhaust system is used as a power source and is used as a safety guarantee measure for the oxygen content in the overhauling area.
Furthermore, in the process of dismantling the brick body, the convex brick at the top is pushed down in advance.
The beneficial effects of the invention are:
1. the invention is adopted to overhaul and preserve heat of the regenerator, the internal environment temperature of the regenerator can be controlled at about 80 ℃, the single operation time is more than 30 minutes after constructors wear the heat insulating clothing, and the condition of maintaining the regenerator in a hot state can be met.
2. The invention is adopted to maintain the heat storage chamber, thereby avoiding the rapid reduction of the surface temperature of the main wall and the single wall of the heat storage chamber, being beneficial to the maintenance of the furnace body and prolonging the service life of the furnace body.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1: the air circulation path diagram of the overhaul process of the regenerative chamber.
FIG. 2 is a drawing: a heat preservation measure chart in the overhaul process of the regenerator.
The heat storage chamber comprises a heat storage chamber sealing wall 1, an overhaul area air flow direction 2, an overhaul operation area access platform 3, a heat storage chamber interior 4, a small flue area 5, a waste gas shutter 6, a waste gas flue 7, a waste gas flue 8, a heat storage chamber top convex brick 9, a heat storage chamber overhaul area 10, a coal gas side heat storage chamber 11 and an air side heat storage chamber.
The direction of the arrow is the air flow direction.
As shown in fig. 1, in the process of overhauling the regenerator, fresh air is sucked from the flue of the exhaust gas as a power source, and then enters the regenerator from the regenerator sealing wall, passes through the upper part and the lower part of the regenerator, passes through the small flue region, passes through the exhaust gas shutter, and then enters the flue of the exhaust gas.
As shown in fig. 2, after the checker bricks are removed, the main wall, the single wall and the top masonry at two sides are insulated by using a ceramic fiber blanket, 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 temperature inside the regenerator is slowly reduced in advance.
Detailed Description
According to the heat accumulation and release principle of the regenerator, a series of standard operation sequences are adopted to realize cooling, heat preservation and ventilation of the regenerator, so that the internal environment of the regenerator has the technological conditions of thermal state maintenance, the safety of operators is guaranteed, and the safety, stability and long service life of a coke oven body are guaranteed.
1. According to the working characteristics of heat exchange of the regenerator, when the interior of the regenerator is downdraft, hot waste gas of the combustion chamber is discharged into a flue through the regenerator and a small flue, and the regenerator is in a preheating stage of temperature rise; when the heat storage chamber is in ascending air flow, cold air and cold coal gas enter the inclined channel through the small flue and the heat storage chamber and are combusted in the combustion chamber, and at the moment, the heat storage chamber is in a stage of releasing heat and reducing the temperature. According to the characteristic, the regenerator is switched off gas and the regenerator sealing wall is opened when the ascending gas flow is finished, and the temperature of the regenerator is at the lowest stage, so that the overhaul work is most suitable to be carried out. The specific method is that when the gas is closed, the horizontal turning plate of the shutter is closed at the end of the ascending gas flow of the regenerator, and the horizontal turning plate is opened after the hole is opened.
2. After the regenerator is perforated, the suction force of the coke oven exhaust system is used as a power source, so that the outside cold air enters the flue through the regenerator, the small flue and the shutter to be further cooled; on the other hand, the method is also a key measure for guaranteeing the oxygen content of the operation environment of the constructors. The specific operation is to prop up the waste gas thallium of the shutter at the overhaul side of the regenerator to a certain height, open all the turnover plates for horizontal adjustment and conduct the ventilation channel. See figure 1.
3. In order to prevent the temperature reduction speed of the main single wall of the regenerator from being too high and avoid directly removing the checker bricks of the regenerator, the checker bricks are cleaned when the surface temperature of the checker bricks is reduced to be below 500 ℃ (when the surface and the interior of the checker bricks are observed by naked eyes without obvious bright colors), and then the main single walls on two sides are immediately adhered with ceramic fibers for heat preservation. In order to relieve the cooling speed of the heat storage chamber, the convex bricks on the upper part of the partition wall of the heat storage chamber are pushed down in advance. As shown in fig. 2.
4. In order to ensure the safe operation of constructors in the regenerators, measures of overhauling the regenerators and closing gas valves of adjacent regenerators are taken.
5. In order to prevent the temperature of the combustion chamber and the carbonization chamber on the upper part of the regenerative chamber from changing violently, the maintenance work is selected in the middle stage of coking, and the furnace number of the carbonization chamber corresponding to the maintenance regenerative chamber and the furnace number of the adjacent carbonization chamber are treated by taking out-of-sequence measures.
Examples
The tai steel carries out heat preservation operation on the regenerator in the process of replacing checker bricks of the regenerator, and the specific embodiment is as follows:
heat preservation scheme for changing checker bricks of regenerator
The checker bricks of the regenerator are long in replacement operation time, the gas supply of adjacent furnace numbers is effectively cut off during the replacement, the adjacent carbonization chambers cannot produce coke, and heat preservation measures must be taken to prevent the reduction of the furnace temperature; on the other hand, in order to ensure the operation safety of the operators in the limited space of the heat storage chamber, the effective ventilation in the heat storage chamber is ensured, and the situations of suffocation and high-temperature injury of the operators are prevented. The following heat preservation measures (based on the maintenance of the gas-side regenerator) are specially made.
First, overhaul the furnace number and buffer the furnace number and set up
Second, selection of maintenance start time
The overhaul start time is too early, the coke in the carbonization chamber is not mature well, the temperature of the furnace body is too fast, and the protection of the furnace body is not facilitated. Overhauls the time of starting working late, and the heat absorption of coke in the coking chamber reduces, can increase the heat transfer of coking chamber toward the regenerator, is unfavorable for the construction operation. Therefore, the start-up time is selected to be between 12 hours and 1/2 coking times corresponding to the number of the coking chambers. The typical coking time is 25-30 hours, 1/2 is about 12-15 hours, and the coking time is related to the daily production task and cannot be determined.
Third, gas-off time confirmation
The gas closing time is earlier than the opening time of the regenerator sealing wall but not more than 20 minutes.
Fourth, furnace body heat preservation
1. Before the opening of the sealing wall of the regenerator, the coke side overhaul area is tight in periphery to prevent the shutter from being damaged by falling objects, and on the other hand, the heat on the upper part of the shutter is isolated, so that the operation of workers is facilitated.
2. After the wall sealing of the regenerator is opened, 1 lattice is removed every time, and after 1 lattice is insulated, 1 lattice is removed again. And the wall bodies and the tops on the two sides need to be adhered with cellucotton for heat preservation. On one hand, the furnace body is protected, and on the other hand, the construction of workers is facilitated.
3. In the process of dismantling the checker bricks, the top convex bricks can be pushed down in advance, so that the temperature reduction of the bricks is facilitated.
4. And after the heat storage chamber machine coke side sealing wall is recovered, immediately opening the gas cock to recover heating, and adjusting the suction pressure of the shutter after confirming that the vertical flame path is normal in combustion.
Attention points
The internal temperature of each overhauling regenerative chamber is different under the different influences of seasons and furnace numbers. In order to prevent the space temperature from suddenly increasing in the maintenance process, the settings of the maintenance furnace number and the buffering furnace number are not permitted to be adjusted randomly.
The above description is only an example of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (4)
1. A heat preservation process for thermal state overhaul of a coke oven regenerator is characterized by comprising the following steps: the method comprises the following steps:
1) the heat storage chamber thermal state overhaul start-up time is selected to be carried out when ascending airflow is finished, coal gas is firstly closed, then the heat storage chamber sealing wall is opened, and advanced coal gas reduction and temperature reduction treatment is not carried out;
2) when the coal gas is closed, the horizontal turning plate of the waste gas shutter is closed at the same time, a channel for overhauling the regenerative chamber and the waste gas flue is cut off, the horizontal turning plate is opened after the sealing wall of the regenerative chamber is opened, and the air circulation of the overhauling area of the regenerative chamber is conducted;
3) after the sealing wall of the regenerator is opened, the suction force of a coke oven exhaust gas system is taken as a power source, outside cold air enters the flue through the regenerator, the small flue and the shutter, and the gas circulation way further cools the regenerator and is also a measure for ensuring the oxygen content in the operation area of constructors; the method specifically comprises the steps of supporting the waste gas thallium of the shutter at the overhaul side of the regenerator by the height of 150-400mm, opening all the horizontal adjusting turning plates and conducting an air circulation channel;
4) removing the checker bricks when no obvious bright color exists on the surface and inside of the checker bricks through visual observation so as to prevent the temperature reduction speed of the main single-wall brickwork of the regenerator from being too high; after the checker bricks are detached, the main single walls on the two sides are immediately insulated in a way of sticking ceramic fiber blankets; in the process of removing the old checker bricks, the convex bricks at the top of the internal partition wall can be pushed down in advance, so that the temperature in the regenerator is slowly reduced;
5) before maintenance, the maintenance regenerator and the gas valves of the adjacent regenerators are closed to ensure the safe operation of constructors in the regenerators;
6) the maintenance starting time is selected to be carried out in the middle coking period of the coking chamber, the furnace number of the coking chamber corresponding to the maintenance regenerator and the furnace number of the adjacent coking chamber are cooled, and coke is not discharged before the maintenance is finished.
2. The heat preservation process for the thermal state overhaul of the regenerative chamber of the coke oven as claimed in claim 1, which is characterized in that: the gas is not reduced in advance before the heat storage chamber is overhauled, and the gas is closed only when the heat storage chamber is started.
3. The heat preservation process for the thermal state overhaul of the regenerative chamber of the coke oven as claimed in claim 1, which is characterized in that: in the process of overhauling the regenerative chamber, the suction force of a coke oven waste gas system is used as a power source and is used as a safety guarantee measure for the oxygen content in an overhauling area.
4. The heat preservation process for the thermal state overhaul of the regenerative chamber of the coke oven as claimed in claim 1, which is characterized in that: and in the process of removing the brick body, the convex brick at the top is pushed over 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 |
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| 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 |
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| CN114790395A true CN114790395A (en) | 2022-07-26 |
| CN114790395B 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 (1)
| Title |
|---|
| 杨帆;严铁军;丁颖;吴木之;: "武钢7.63m焦炉蓄热室格子砖变形熔损原因探讨", 钢铁, no. 06, pages 270 - 271 * |
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