CN111334313A - Maintenance method of coke oven combustion chamber - Google Patents
Maintenance method of coke oven combustion chamber Download PDFInfo
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- CN111334313A CN111334313A CN202010251022.0A CN202010251022A CN111334313A CN 111334313 A CN111334313 A CN 111334313A CN 202010251022 A CN202010251022 A CN 202010251022A CN 111334313 A CN111334313 A CN 111334313A
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- Prior art keywords
- combustion chamber
- coke oven
- building
- blocks
- chute
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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
- C10B29/00—Other details of coke ovens
- C10B29/02—Brickwork, e.g. casings, linings, walls
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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
- C10B29/00—Other details of coke ovens
- C10B29/06—Preventing or repairing leakages of the brickwork
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to the technical field of coke oven maintenance, in particular to a maintenance method of a coke oven combustion chamber. Prefabricating a large zero-expansion silica brick building block according to the thermal state size of the combustion chamber; reinforcing a cart rail at the top of the coke oven; removing the whole wall of the combustion chamber to be repaired of the coke oven to the surface of the chute port; cleaning the chute port to ensure the chute to be smooth; the prefabricated large zero-expansion silica brick blocks are hoisted to the position of a demolished combustion chamber for building, and the large blocks are hoisted to the building position by using a crane during building, so that the labor is saved, the construction time is shortened, the furnace temperature of adjacent furnace walls is not excessively reduced, and the large blocks are kept full of mortar during building. The invention shortens the construction period of uncovering overhaul of the combustion chamber of the coke oven, improves the integral tightness of the combustion chamber and prolongs the service life of the coke oven.
Description
Technical Field
The invention relates to the technical field of coke oven maintenance, in particular to a maintenance method of a coke oven combustion chamber.
Background
Coke ovens, i.e., large scale plants for the production of coke. The service life is generally about 20-30 years. Because the walls of the coke oven carbonization chamber and the combustion chamber are in a high-temperature state for a long time and are abraded in construction operation, the walls gradually crack, leak, collapse, deform and the like. At present, some enterprises try to maintain the coke oven in a hot state, when the wall of a combustion chamber is seriously damaged or deformed and needs to be uncovered for overhaul, the conventional enterprises are generally built by common silica bricks, but as shown in figure 1, the heat preservation effect of the wall of the adjacent combustion chamber cannot be ensured due to the complicated and various types of the common silica bricks and the long construction period; and secondly, the common silica bricks have more masonry mortar joints, and the whole tightness is not good after maintenance. Long time consumption, low efficiency, high cost and large consumption when being maintained.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a maintenance method of a coke oven combustion chamber. The construction period of uncovering overhaul of the combustion chamber of the coke oven is shortened, the integral tightness of the combustion chamber is improved, and the service life of the coke oven is prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
a maintenance method of a coke oven combustion chamber comprises the following steps:
firstly, prefabricating a large building block according to the thermal state size of a combustion chamber;
the shape of the prefabricated large building block is matched with that of a combustion chamber of the coke oven, and the size of the prefabricated large building block is consistent with that of the coke oven in a hot state. The prefabricated large building block is a zero-expansion silica brick large building block.
Secondly, reinforcing a cart track at the top of the coke oven;
the method comprises the steps of fixing a track by adopting I-shaped steel and a thick steel plate with the length of 20-25 mm, fixing the I-shaped steel on two sides of the track, fixing the steel plate below the track, enabling the length of the I-shaped steel and the length of the thick steel plate to be 5-8 m, enabling two ends of the I-shaped steel and the thick steel plate to be lapped at the positions of furnace tops above adjacent combustion chambers and carbonization chambers which are not dismantled, and dismantling the combustion chambers after the construction.
Step three, dismantling the whole wall of the combustion chamber to be repaired of the coke oven to the surface of the chute port;
the combustion chambers are dismantled from top to bottom, and the furnace walls of two adjacent combustion chambers are insulated by using aluminum silicate fiber mats along with the dismantling process, so that the temperature of the furnace walls of the adjacent combustion chambers is kept to be not lower than 800 ℃.
Step four, cleaning the chute port to ensure the chute to be smooth;
and fifthly, hoisting the prefabricated large zero-expansion silica brick blocks to the position of the dismantled combustion chamber for building, hoisting the large blocks to the building position by using a crane during building, saving labor, shortening construction time, ensuring that the furnace temperature of adjacent furnace walls is not excessively reduced, and building the combustion chamber by using the large blocks, wherein the integral mortar joint is 5-15% of that of the combustion chamber built by using common silica bricks, so that the whole tightness of the furnace walls is better.
And step six, keeping the large building blocks full of mortar in the building process.
The mortar is a mixture consisting of siliceous fire clay, water and phosphoric acid, and the weight portion of the mixture is 10:5: 0.1.
Compared with the prior art, the invention has the beneficial effects that:
the method for building the combustion chamber of the coke oven by using the large prefabricated zero-expansion silica brick blocks overcomes the problems of complexity and various types and long building construction period of the common silica brick blocks, shortens the building time, better protects adjacent oven walls, effectively improves the maintenance efficiency of the coke oven, has better integral tightness of the combustion chamber, prolongs the service life of the coke oven, has standard size of the repaired combustion chamber, levels the building body and improves the yield of the coke oven.
Drawings
FIG. 1 is an outer wall of a combustion chamber built by ordinary silica bricks;
FIG. 2 is an outer wall of a combustion chamber side flame path constructed by the method of the present invention;
FIG. 3 is the external wall of the middle flame path of the combustion chamber built by the method of the present invention.
In the figure: 1-common silica brick 2-big building block 3-big building block of another shape
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
when the furnace wall of the combustion chamber is seriously damaged or seriously deformed and needs to be uncovered for overhaul, the furnace wall is usually built by adopting common silica bricks, but as shown in figure 1, the outer wall of the combustion chamber built by the common silica bricks is shown in figure 1, and because the common silica bricks are complicated and various in shape and long in construction period, the heat insulation effect of the furnace walls of adjacent combustion chambers cannot be ensured; and secondly, the common silica bricks have more masonry mortar joints, and the whole tightness is not good after maintenance. Long time consumption, low efficiency, high cost and large consumption when being maintained.
[ examples ] A method for producing a compound
Combustion chamber for maintaining 6m high coke oven
The maintenance method comprises the following steps:
step one, prefabricating a large zero-expansion silica brick block according to the thermal state size of a combustion chamber, wherein the shape of the prefabricated large block is matched with that of the combustion chamber of the coke oven, and the size of the prefabricated large block is consistent with that of the coke oven in the thermal state.
Secondly, reinforcing a cart track at the top of the coke oven; the method comprises the steps of reinforcing a track of a large furnace roof vehicle, fixing the track by I16I-steel and 25mm thick steel plates with the same length, wherein the specific size of the I16I-steel is 160mm in height, 88mm in leg width and 63mm in belly thickness, the I-steel is fixed on two sides of the track, the steel plates are fixed on the I16I-steel and the thick steel plates 6m in length below the track, two ends of the thick steel plates are lapped on the top of adjacent combustion chambers and carbonization chambers which are not dismantled, and the combustion chambers to be repaired are dismantled after the construction is completed.
And step three, dismantling the whole combustion chamber walls to be repaired of the coke oven to the surface of the chute port, wherein the combustion chamber dismantling process adopts the sequence from top to bottom, and the furnace walls of two adjacent combustion chambers are insulated by using an aluminum silicate fiber felt along with the dismantling process, so that the temperature of the furnace walls of the adjacent combustion chambers is kept to be not lower than 800 ℃.
And step four, cleaning the chute port to ensure the chute to be smooth.
And fifthly, hoisting the prefabricated large zero-expansion silica brick blocks to the position of the demolished combustion chamber for building, and hoisting the large blocks to the building position by using a crane during building, so that the labor is saved, the construction time is shortened, and the furnace temperature of the adjacent furnace walls is not excessively reduced. When the combustion chamber is built by large building blocks, the number of the whole mortar joints is 10 percent of that of the common silica bricks, and the whole tightness of the furnace wall is better.
Fig. 2 is an outer wall of a combustion chamber side flame path constructed by the method of the present invention, and fig. 3 is an outer wall of a combustion chamber middle flame path constructed by the method of the present invention.
Step six: in the building process, the large building blocks are kept full of mortar, and the mortar is a mixture consisting of 10:5:0.1 of siliceous fire clay, water and phosphoric acid in parts by weight.
The method for building the combustion chamber of the coke oven by using the large prefabricated zero-expansion silica brick blocks overcomes the problems of complexity and various types and long building construction period of the common silica brick blocks, shortens the building time, better protects adjacent oven walls, effectively improves the maintenance efficiency of the coke oven, has better integral tightness of the combustion chamber, prolongs the service life of the coke oven, has standard size of the repaired combustion chamber, levels the building body and improves the yield of the coke oven.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A maintenance method of a coke oven combustion chamber is characterized by comprising the following steps:
firstly, prefabricating a large building block according to the thermal state size of a combustion chamber;
secondly, reinforcing a cart track at the top of the coke oven;
step three, dismantling the whole wall of the combustion chamber to be repaired of the coke oven to the surface of the chute port;
step four, cleaning the chute port to ensure the chute to be smooth;
hoisting the prefabricated large building blocks to the disassembled combustion chamber, and building the combustion chamber by using the large building blocks;
and step six, keeping the large building blocks full of mortar in the building process.
2. The method of claim 1, wherein the prefabricated blocks in step one are matched in shape and size to the coke oven combustion chamber in hot state.
3. The method of claim 1, wherein the large precast blocks in step one are zero expansion silica brick large blocks.
4. The method of claim 1, wherein the step two of reinforcing the coke oven crown cart rail comprises: i-shaped steel and a thick steel plate with the length of 20-25 mm are adopted to fix the track, the I-shaped steel is fixed on two sides of the track, the steel plate is fixed below the track, the lengths of the I-shaped steel and the thick steel plate are 5-8 m, and two ends of the I-shaped steel and the thick steel plate are lapped at the positions of furnace tops above adjacent combustion chambers and carbonization chambers which are not dismantled.
5. The method of claim 1, wherein the step three of removing the entire wall of the coke oven chamber to be repaired to the surface of the chute port comprises: the combustion chambers are dismantled from top to bottom, and the furnace walls of two adjacent combustion chambers are insulated by using aluminum silicate fiber mats along with the dismantling process, so that the temperature of the furnace walls of the adjacent combustion chambers is kept to be not lower than 800 ℃.
6. The maintenance method of the coke oven combustion chamber as claimed in claim 1, wherein in the fifth step, when the combustion chamber is built by the large building blocks, the whole mortar joint is 5-15% of that of the common silica bricks.
7. The method for maintaining the combustion chamber of the coke oven as claimed in claim 1, wherein the mortar in the sixth step is a mixture of siliceous mortar, water and phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251022.0A CN111334313A (en) | 2020-04-01 | 2020-04-01 | Maintenance method of coke oven combustion chamber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251022.0A CN111334313A (en) | 2020-04-01 | 2020-04-01 | Maintenance method of coke oven combustion chamber |
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| CN111334313A true CN111334313A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010251022.0A Pending CN111334313A (en) | 2020-04-01 | 2020-04-01 | Maintenance method of coke oven combustion chamber |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ178695A3 (en) * | 1993-01-23 | 1995-12-13 | Lorraine Laminage | Quartz prefabricate intended for use at very high temperatures and process for producing thereof |
| JPH10251650A (en) * | 1997-03-17 | 1998-09-22 | Nippon Steel Corp | Inner cylinder brickwork structure of coke dry quenching equipment and brick for inner cylinder |
| CN1613967A (en) * | 2003-11-07 | 2005-05-11 | 酒泉钢铁(集团)有限责任公司 | Process for heat maintaining whole walls of coke carbonating chamber |
| CN201406401Y (en) * | 2009-05-14 | 2010-02-17 | 中冶实久建设有限公司 | Reinforcing device of coal charging car track for coke oven on-line hot repair |
| CN104357067A (en) * | 2014-10-14 | 2015-02-18 | 辽宁中弘信冶金技术有限公司 | Coke oven maintenance method |
| CN107892926A (en) * | 2017-12-22 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of energy-saving fire door lining brick of coke oven |
| CN109762579A (en) * | 2019-03-11 | 2019-05-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of dry coke quenching level-sensing device mounting base that prefabricated pour is built |
-
2020
- 2020-04-01 CN CN202010251022.0A patent/CN111334313A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ178695A3 (en) * | 1993-01-23 | 1995-12-13 | Lorraine Laminage | Quartz prefabricate intended for use at very high temperatures and process for producing thereof |
| JPH10251650A (en) * | 1997-03-17 | 1998-09-22 | Nippon Steel Corp | Inner cylinder brickwork structure of coke dry quenching equipment and brick for inner cylinder |
| CN1613967A (en) * | 2003-11-07 | 2005-05-11 | 酒泉钢铁(集团)有限责任公司 | Process for heat maintaining whole walls of coke carbonating chamber |
| CN201406401Y (en) * | 2009-05-14 | 2010-02-17 | 中冶实久建设有限公司 | Reinforcing device of coal charging car track for coke oven on-line hot repair |
| CN104357067A (en) * | 2014-10-14 | 2015-02-18 | 辽宁中弘信冶金技术有限公司 | Coke oven maintenance method |
| CN107892926A (en) * | 2017-12-22 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of energy-saving fire door lining brick of coke oven |
| CN109762579A (en) * | 2019-03-11 | 2019-05-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of dry coke quenching level-sensing device mounting base that prefabricated pour is built |
Non-Patent Citations (1)
| Title |
|---|
| 上海五冶检修公司: "《焦炉设备状态维护与检修技术》", 30 April 2005, 上海交通大学出版社 * |
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Application publication date: 20200626 |