CN113403091A - Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover - Google Patents
Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover Download PDFInfo
- Publication number
- CN113403091A CN113403091A CN202110559902.9A CN202110559902A CN113403091A CN 113403091 A CN113403091 A CN 113403091A CN 202110559902 A CN202110559902 A CN 202110559902A CN 113403091 A CN113403091 A CN 113403091A
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- Prior art keywords
- dry quenching
- vault
- blowby
- primary
- dust remover
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- 238000010791 quenching Methods 0.000 title claims abstract description 47
- 230000000171 quenching effect Effects 0.000 title claims abstract description 47
- 239000000428 dust Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000571 coke Substances 0.000 title claims abstract description 24
- 230000000903 blocking effect Effects 0.000 title description 3
- 239000011449 brick Substances 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000012423 maintenance Methods 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 12
- 238000004321 preservation Methods 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052863 mullite Inorganic materials 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 4
- 239000012716 precipitator Substances 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract 1
- 230000009970 fire resistant effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004939 coking Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 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
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- 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
- C10B43/00—Preventing or removing incrustations
-
- 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
Landscapes
- 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
A method for online plugging blowby of vault masonry of a primary coke dry quenching dust remover is characterized by comprising the following steps: a. adjusting production condition of a dry quenching furnace, b, preparing maintenance construction equipment, c, equipping construction personnel with a portable O2Cutting a primary dust collector vault furnace shell steel plate, d, cleaning heat preservation particle fillers on the upper portion of a primary dust collector vault masonry, e, building heat insulation bricks, backfilling heat preservation particles, welding steel plates and completing online plugging of blowby of the primary dust collector vault masonry of the dry quenching coke after grouting is completed. The method for online plugging the blowby of the vault masonry of the coke dry quenching primary dust remover has the advantages of shortening the overhaul time, ensuring safe and reliable engineering quality, improving the production efficiency of the coke dry quenching furnace, reducing the maintenance cost and saving social refractory materials.
Description
Technical Field
The invention relates to a method for plugging blowby of kiln masonry, in particular to a method for plugging blowby of vault masonry of a primary dry quenching dust remover on line.
Background
In recent years, with the development of society and higher requirements on environmental protection and energy, dry quenching devices are adopted by more and more steel mills in China. When the vault masonry of the primary coke dry quenching dust remover is newly built, the mortar joint is possibly too large and the mortar is not full; or the air flow scours excessively during the production process, so that the vault masonry has a through seam, the sealing is poor, and the local temperature of the vault shell of the dust remover is overhigh and reddish after a period of dry quenching production. Aiming at the phenomenon, a mode of covering a heat insulation castable material on a primary dust remover vault shell or a mode of bricking the primary dust remover vault masonry after a furnace is shut down and the primary dust remover vault masonry is dismantled is adopted. The first method described above causes the primary precipitator dome shell steel sheet to be burnt and deformed; the other method has the disadvantages of large dismantling workload, high maintenance cost, long construction period and serious influence on production.
The known methods of repairing the dome shell of a primary precipitator therefore suffer from the inconveniences and problems described above.
Disclosure of Invention
The invention aims to provide a safe and reliable method for online blocking blowby of vault masonry of a primary coke dry quenching dust remover.
In order to achieve the purpose, the technical solution of the invention is as follows:
a method for online plugging blowby of vault masonry of a primary coke dry quenching dust remover is characterized by comprising the following steps:
a. production condition adjustment of dry quenching furnace
Keeping the normal material level of the dry quenching furnace, filling nitrogen, and reducing combustible components H in a circulating gas system of the dry quenching furnace2Adjusting the CO content and the air volume of the circulating gas to be half of the normal air volume, and carrying out heat preservation and pressure maintaining treatment on the system; monitoring H in circulating gas at the moment of dry quenching main control chamber2The concentration of combustible CO components is ensured to be controlled within a range with minimum risk;
b. maintenance construction machine preparation
Portable O2An alarm, a portable CO alarm, and a low-pressure blower safety device; heat preservation particles, ceramic fiber blankets and mullite fire clay are used for plugging the blowby material; a cutting machine, an electric welding machine and corresponding welding line and welding rod construction tools;
c. portable O for constructors2An alarm and a portable CO alarm, wherein a low-pressure blower is arranged at a cutting hole at the upper part of the vault of the coke dry quenching primary dust remover for blowing air, so that H around a construction site is reduced2The concentration of combustible CO components;cutting a vault furnace shell steel plate of the dry quenching primary dust remover by using a cutting machine, wherein the hole opening part is positioned in the middle of the vault structure;
d. cleaning the heat preservation particle filler on the top of the primary dust remover, removing the heat insulation bricks on the top of the furnace, exposing the refractory bricks on the working layer of the furnace top, filling and compacting a larger gap at the arch top by adopting a ceramic fiber blanket, and then performing grouting treatment; directly adopting grouting treatment for small gaps at the arch crown;
e. and after grouting is finished, building the heat insulation brick, fully paving 1 layer of ceramic fiber blanket with the thickness of 50mm on the surface of the heat insulation brick, filling heat insulation particles, and finally welding a steel plate.
The method for online plugging the blow-by of the vault masonry of the coke dry quenching primary dust remover can be further realized by adopting the following technical measures.
The method as described above, wherein the minimum risk range is H2The content of CO is controlled below 3%, and the content of CO is controlled below 6%.
The method of the preceding, wherein the size of the opening is 800 x 1500 mm.
In the method, the grouting treatment is carried out in two times, the grouting refractory slurry is prepared by adding 10 percent of industrial phosphoric acid with the concentration of 85 percent of mullite fire clay and water, and the first time is the refractory slurry with the density of 1.3g/cm3(ii) a The density of the slurry adopted for the second time is 1.7g/cm3。
After the technical scheme is adopted, the method for online plugging the blow-by of the vault masonry of the primary coke dry quenching dust remover has the following advantages:
1. the maintenance time is shortened;
2. the engineering quality is safe and reliable, and the production efficiency of the dry quenching furnace is improved;
3. the maintenance cost is reduced, and the manufacturing resources of the social refractory materials are saved.
Drawings
FIG. 1 is a schematic structural diagram of a primary dust collector in an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention discloses a method for online plugging blowby of vault masonry of a primary coke dry quenching dust remover, which comprises the following process flows:
adjusting the production condition of a dry quenching furnace → preparing a maintenance construction machine → cutting a steel plate of a vault furnace shell of a dust remover → completely cleaning filler in the vault → dismantling partial heat insulation bricks → filling large seams at the vault → grouting treatment → building heat insulation bricks → filling heat preservation particles → welding the vault steel plate furnace shell → recovering the normal production condition.
FIG. 1 is a schematic structural diagram of a primary dust collector in an embodiment of the present invention. The method for online plugging the blow-by of the vault masonry of the primary coke dry quenching dust remover comprises the following steps:
1. production condition adjustment of dry quenching furnace
The dry quenching furnace is kept at a normal material level, and a method of filling nitrogen is adopted firstly to reduce combustible components H in a circulating gas system of the dry quenching furnace2And regulating the air quantity of the circulating gas to about half of the normal air quantity according to the CO content, and carrying out heat preservation and pressure maintaining treatment on the system. Monitoring H in circulating gas at the moment of dry quenching main control chamber2The concentration of combustible components such as CO is surely controlled within a predetermined minimum risk range, and generally H2The content of CO is controlled below 3%, and the content of CO is controlled below 6%.
2. Maintenance construction machine preparation
Portable O2Safety equipment such as an alarm, a portable CO alarm, a low-pressure blower and the like; plugging blowby materials such as heat-insulating particles, ceramic fiber blankets, mullite bricks 5, fire clay and the like; a cutting machine, an electric welding machine and corresponding construction materials such as a welding line, a welding rod and the like.
3. The specific construction measures of online plugging are as follows:
1) portable O for constructors2Alarm and be equipped with portable CO alarm. A low-pressure blower is arranged at the cutting hole for blowing air, so that H around the construction site is reduced2And the concentration of combustible components such as CO. The furnace shell steel plate 6 is cut by a cutting machine, the position of an opening 7 is mainly in the middle of the arch structure, and the size of the opening is 800 multiplied by 1500 mm.
2) Cleaning the heat preservation particles 3 at the top of the primary dust remover, removing the heat insulation bricks 4 at the furnace top part of the leakage point 2 of the vault masonry 1, exposing the refractory bricks at the working layer of the furnace top, filling and compacting a larger gap at the vault by adopting a ceramic fiber blanket, and then performing grouting treatment; and directly adopting grouting treatment for the small gap at the arch crown.
3) The grouting treatment is carried out twice. The fire-resistant slurry for grouting is prepared by adding 10 percent of industrial phosphoric acid (with the concentration of 85 percent) and water into mullite fire-resistant slurry, and the density of the fire-resistant slurry adopted for the first time is lower and is about 1.3g/cm3(ii) a The second time using a slurry density of about 1.7g/cm3。
4) And after grouting is finished, building heat insulation bricks, paving 1 layer of ceramic fiber blanket with the thickness of 50mm on the surface of the heat insulation bricks, filling heat insulation particles, and finally welding steel plates.
The method for online plugging the blowby of the vault masonry of the primary coke dry quenching dust remover has the advantages that the basic parameters of the coke dry quenching production are properly adjusted under the condition that the coke dry quenching production is not influenced, the technical measures are adopted at the top of the primary coke dry quenching dust remover to plug the blowby point of the vault masonry, and the problems of high temperature and redness of the vault steel plate of the primary coke dry quenching dust remover are solved. The method shortens the maintenance time, improves the production efficiency of the dry quenching furnace, and has important significance in reducing the maintenance cost, saving the manufacturing resources of the social refractory materials and the like.
The method for online plugging blowby of vault masonry of the coke dry quenching primary dust remover disclosed by the invention is applied to maintenance engineering of a coke dry quenching furnace of a Pan steel coking company, has an obvious effect and is determined by relevant departments and units.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (4)
1. A method for online plugging blowby of vault masonry of a primary coke dry quenching dust remover is characterized by comprising the following steps:
a. production condition adjustment of dry quenching furnace
Keeping the normal material level of the dry quenching furnace, filling nitrogen, and reducing combustible components H in a circulating gas system of the dry quenching furnace2Adjusting the CO content and the air volume of the circulating gas to be half of the normal air volume, and carrying out heat preservation and pressure maintaining treatment on the system; monitoring H in circulating gas at the moment of dry quenching main control chamber2The concentration of combustible CO components is ensured to be controlled within a range with minimum risk;
b. maintenance construction machine preparation
Portable O2An alarm, a portable CO alarm, and a low-pressure blower safety device; heat preservation particles, ceramic fiber blankets and mullite fire clay are used for plugging the blowby material; a cutting machine, an electric welding machine and corresponding welding line and welding rod construction tools;
c. portable O for constructors2An alarm and a portable CO alarm, wherein a low-pressure blower is arranged at a cutting hole at the upper part of the vault of the coke dry quenching primary dust remover for blowing air, so that H around a construction site is reduced2The concentration of combustible CO components; cutting a vault furnace shell steel plate of the dry quenching primary dust remover by using a cutting machine, wherein the hole opening part is positioned in the middle of the vault structure;
d. cleaning the heat preservation particle filler on the top of the primary dust remover, removing the heat insulation bricks on the top of the furnace, exposing the refractory bricks on the working layer of the furnace top, filling and compacting a larger gap at the arch top by adopting a ceramic fiber blanket, and then performing grouting treatment; directly adopting grouting treatment for small gaps at the arch crown;
e. and after grouting is finished, building the heat insulation brick, fully paving 1 layer of ceramic fiber blanket with the thickness of 50mm on the surface of the heat insulation brick, filling heat insulation particles, and finally welding a steel plate.
2. The method of online plugging blowby of dry quenching primary precipitator vault masonry of claim 1 wherein said minimum hazard range is H2The content of CO is controlled below 3%, and the content of CO is controlled below 6%.
3. The method of online plugging blowby of dry quenching primary precipitator vault masonry of claim 1 wherein the size of the openings is 800 x 1500 mm.
4. The method for online plugging blowby of vault masonry of a coke dry quenching primary dust collector of claim 1, wherein the grouting treatment is performed in two steps, the grouted refractory mortar is prepared by mullite mortar with the addition of industrial phosphoric acid with the concentration of 85% and water, the first time, the density of the grouted refractory mortar is 1.3g/cm3(ii) a The density of the slurry adopted for the second time is 1.7g/cm3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559902.9A CN113403091A (en) | 2021-05-21 | 2021-05-21 | Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559902.9A CN113403091A (en) | 2021-05-21 | 2021-05-21 | Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover |
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| CN113403091A true CN113403091A (en) | 2021-09-17 |
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|---|---|---|---|
| CN202110559902.9A Pending CN113403091A (en) | 2021-05-21 | 2021-05-21 | Method for online blocking blowby of vault masonry of primary coke dry quenching dust remover |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4014750A (en) * | 1974-01-24 | 1977-03-29 | Dr. C. Otto & Comp. G.M.B.H. | Support apparatus for a battery of coke ovens |
| US4445977A (en) * | 1983-02-28 | 1984-05-01 | Furnco Construction Corporation | Coke oven having an offset expansion joint and method of installation thereof |
| JPH07268343A (en) * | 1994-03-31 | 1995-10-17 | Nkk Corp | Expansion joint for connecting primary dust removing device in coke dry quencher |
| CN102241995A (en) * | 2010-05-11 | 2011-11-16 | 五冶集团上海有限公司 | Dry quenching expansion joint firebrick structure construction technology |
| CN204224518U (en) * | 2014-11-25 | 2015-03-25 | 重庆钢铁股份有限公司 | Expansion joint is imported and exported in cork dry quenching disposable dedusting |
| CN104479697A (en) * | 2014-12-09 | 2015-04-01 | 攀钢集团攀枝花钢钒有限公司 | Treatment method for material jamming of rotating seal valve of dry quenching furnace |
| CN111569529A (en) * | 2020-04-20 | 2020-08-25 | 包头钢铁（集团）有限责任公司 | Method for rapidly processing faults of dry quenching discharge device |
-
2021
- 2021-05-21 CN CN202110559902.9A patent/CN113403091A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4014750A (en) * | 1974-01-24 | 1977-03-29 | Dr. C. Otto & Comp. G.M.B.H. | Support apparatus for a battery of coke ovens |
| US4445977A (en) * | 1983-02-28 | 1984-05-01 | Furnco Construction Corporation | Coke oven having an offset expansion joint and method of installation thereof |
| JPH07268343A (en) * | 1994-03-31 | 1995-10-17 | Nkk Corp | Expansion joint for connecting primary dust removing device in coke dry quencher |
| CN102241995A (en) * | 2010-05-11 | 2011-11-16 | 五冶集团上海有限公司 | Dry quenching expansion joint firebrick structure construction technology |
| CN204224518U (en) * | 2014-11-25 | 2015-03-25 | 重庆钢铁股份有限公司 | Expansion joint is imported and exported in cork dry quenching disposable dedusting |
| CN104479697A (en) * | 2014-12-09 | 2015-04-01 | 攀钢集团攀枝花钢钒有限公司 | Treatment method for material jamming of rotating seal valve of dry quenching furnace |
| CN111569529A (en) * | 2020-04-20 | 2020-08-25 | 包头钢铁（集团）有限责任公司 | Method for rapidly processing faults of dry quenching discharge device |
Non-Patent Citations (1)
| Title |
|---|
| 谭春华等: "干熄焦伸缩节浇注料结构改为耐火砖结构的施工技术", 《工业建筑》 * |
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Application publication date: 20210917 |