CN113355112A - Method for preventing coke oven gas from detonating - Google Patents
Method for preventing coke oven gas from detonating Download PDFInfo
- Publication number
- CN113355112A CN113355112A CN202110763596.0A CN202110763596A CN113355112A CN 113355112 A CN113355112 A CN 113355112A CN 202110763596 A CN202110763596 A CN 202110763596A CN 113355112 A CN113355112 A CN 113355112A
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- China
- Prior art keywords
- coke oven
- preventing
- gas
- groove
- oven gas
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000571 coke Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000005474 detonation Methods 0.000 claims abstract description 22
- 238000011049 filling Methods 0.000 claims abstract description 19
- 239000000314 lubricant Substances 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 7
- 239000010425 asbestos Substances 0.000 claims description 28
- 229910052895 riebeckite Inorganic materials 0.000 claims description 28
- 239000003960 organic solvent Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 235000014121 butter Nutrition 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000011068 loading method Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 48
- 238000007789 sealing Methods 0.000 description 10
- 239000000084 colloidal system Substances 0.000 description 7
- 239000003034 coal gas Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002912 waste gas Substances 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
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a method for preventing coke oven gas from detonating, and relates to the technical field of coke chemical industry. The method comprises the following steps of: removing the exchange cock from the on-off valve; cleaning a surface of the exchange plug; applying a lubricant to the surface of the exchange cock; loading the exchange cock into the on-off valve; opening the end cap; filling materials are arranged in the grooves; closing the end cap and abutting the end cap against the filler material. The method for preventing the detonation of the coke oven gas can prevent the detonation of the coke oven after the pipelines for supplying the gas are exchanged.
Description
Technical Field
The invention relates to the technical field of coke chemical industry, in particular to a method for preventing coke oven gas from detonating.
Background
The coke oven is an industrial oven for producing coke, and coke oven gas is used for indirectly heating a combustion chamber so as to ensure that coal entering a coke oven carbonization chamber reaches the temperature requirement and becomes coke. The combustion chamber is heated by using coal gas, half of the coal gas pipes are ventilated in the heating process, and half of the coal gas pipes are closed and exchanged once every 30 minutes. After the gas pipe exchange is completed, a detonation phenomenon often occurs. The occurrence of the detonation phenomenon brings a series of potential safety hazards to coking production: firstly, the coke oven masonry is damaged, so that the coal gas, air and waste gas are leaked, and the heating of the coke oven is influenced; secondly, the gas conveying and adjusting equipment is damaged, so that gas leaks and the temperature of the coke oven is influenced to be adjusted; thirdly, noise pollution increases the psychological burden of operators; fourthly, the operators are damaged, and the safety production is endangered.
The detonation phenomenon is mostly caused by the fact that air is sucked or a small amount of gas leaks to enable the gas to be mixed with the air and to be combusted in a small space due to the fact that the seal between the exchange cock and the valve body and the seal between the gas pipe and the coke oven base are not tight.
In view of the above problems, it is necessary to develop a method for preventing the detonation of coke oven gas to solve the problem of the occurrence of detonation of a coke oven after exchanging pipes for supplying gas.
Disclosure of Invention
The invention aims to provide a method for preventing coke oven gas from detonating, which can prevent the coke oven from detonating after a pipeline for supplying gas is exchanged.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for preventing the detonation of coke oven gas is characterized in that a base is arranged at the bottom of a coke oven, the base comprises a groove and an air inlet pipe, the air inlet pipe is communicated with the bottom of the groove and the inside of the coke oven, one end of a gas pipe is fixed in the groove through an end cover sleeved on the gas pipe, the gas pipe is provided with a switch valve, and the method comprises the following steps:
removing the exchange cock from the on-off valve;
cleaning a surface of the exchange plug;
applying a lubricant to the surface of the exchange cock;
loading the exchange cock into the on-off valve;
opening the end cap;
filling materials are arranged in the grooves;
closing the end cap and abutting the end cap against the filler material.
Preferably, cleaning the surface of the swap plug comprises rubbing the surface of the swap plug with sandpaper.
Preferably, cleaning the surface of the exchange plug comprises immersing the exchange plug in an organic solvent.
Preferably, the organic solvent is diesel.
Preferably, the lubricant is butter.
Preferably, the side wall of the groove is an inclined surface, and the inclined surface inclines from the opening of the groove to the air inlet pipe.
Preferably, the filling material includes the asbestos cord, the asbestos cord winding set up in the gas pipe stretches into the one end of recess, the outside of asbestos cord with the lateral wall butt of recess.
Preferably, the filling material further comprises colloid, and the colloid is continuously injected in the process that the asbestos rope is wound on the gas pipe so as to fix the asbestos rope.
Preferably, the cross section of the asbestos cord is rectangular.
Preferably, the cross-sectional dimension of the asbestos cord is 0.3mm by 0.3 mm.
The invention has the beneficial effects that:
the invention provides a method for preventing coke oven gas from detonating. In the method, the surface of the exchange cock is cleaned to remove dirt attached to the surface of the exchange cock, then the surface of the exchange cock is coated with a lubricant, and then the exchange cock is installed in the switch valve. Then filling materials are arranged in the grooves, and the filling materials are tightly pressed in the grooves through the end covers.
The sealing performance between the exchange cock and the switch valve is improved by removing dirt on the surface of the exchange cock, meanwhile, for avoiding diameter loss generated by the exchange cock in a long-term cleaning process, the lubricant is coated before the exchange cock is installed and used again, the lubricant can play a role in lubrication and has certain viscosity, a gap between the exchange cock and the switch valve can be tightly filled with the lubricant, and air is prevented from entering from a gap between the selective cock and the switch valve.
And the filling material is compressed tightly by the end cover, the groove and the gas pipe, so that gaps between the gas pipe and the gas inlet pipe and gaps between the gas pipe and the end cover are filled, the sealing property is improved, and the occurrence of detonation is effectively prevented.
Drawings
FIG. 1 is a schematic structural view of a coke oven and a base provided by the present invention.
In the figure:
1. a coke oven; 2. a base; 3. a gas pipe; 4. an end cap; 5. a filler material;
21. a groove; 22. an air inlet pipe; 31. the cock is exchanged.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The embodiment provides a method for preventing the detonation of coke oven gas. As shown in fig. 1, a base 2 is arranged at the bottom of a coke oven 1, the base 2 comprises a groove 21 and an air inlet pipe 22, the air inlet pipe 22 is communicated with the bottom of the groove 21 and the inside of the coke oven 1, one end of a gas pipe 3 is fixed in the groove 21 through an end cover 4 sleeved on the gas pipe 3, and the gas pipe 3 is provided with a switch valve. The method for preventing the detonation of the coke oven gas comprises the following steps:
removing the exchange cock 31 from the on-off valve;
cleaning the surface of the exchange cock 31;
applying a lubricant on the surface of the exchange cock 31;
the exchange cock 31 is fitted into the on-off valve;
firstly, the surface of the exchange cock 31 is cleaned to remove dirt attached to the surface of the exchange cock 31, then the surface of the exchange cock 31 is coated with a lubricant, and then the exchange cock 31 is installed in the switch valve. The sealing performance between the exchange cock 31 and the switch valve is improved by removing dirt on the surface of the exchange cock 31, and meanwhile, in order to avoid diameter loss generated in the long-term cleaning process of the exchange cock 31, a lubricant is coated before the exchange cock 31 is installed again for use, the lubricant can play a role in lubrication and has certain viscosity, so that the gap between the exchange cock 31 and the switch valve can be ensured to be tightly filled with the lubricant, and air is prevented from entering from the gap between the selective cock and the switch valve.
Opening the end cap 4;
filling material 5 is arranged in the groove 21;
the end cap 4 is closed and the end cap 4 is brought into abutment with the filler material 5.
A filler material 5 is provided in the recess 21 and the filler material 5 is compressed in the recess 21 by the end cap 4. And the filling material 5 is compressed by the end cover 4, the groove 21 and the gas pipe 3, so that gaps between the gas pipe 3 and the gas inlet pipe 22 and gaps between the gas pipe 3 and the end cover 4 are filled, the sealing property is improved, and the occurrence of detonation is effectively prevented.
Preferably, cleaning the surface of the swap plug 31 includes rubbing the surface of the swap plug 31 with sandpaper.
During the long-term use of the exchange cock 31, the oil used for lubrication or sealing on the surface of the exchange cock 31 is denatured by the high temperature, and dirt is formed to adhere to the surface of the exchange cock 31. These fouling increase the gap between the exchange cock 31 and the on-off valve, which results in insufficient sealing performance, gas can escape through the gap, air can enter through the gap, which results in mixing of gas and air, and gas combustion is detonated due to the high temperature of the coke oven 1. It is necessary to smooth the surface of the exchange cock 31 with a relatively hard tool such as sandpaper.
Preferably, cleaning the surface of the exchange cock 31 comprises immersing the exchange cock 31 in an organic solvent. Most of the dirt adhering to the surface of the exchange cock 31 is organic matter such as lubricating oil, and the organic solvent can dissolve the dirt adhering to the surface of the exchange cock 31, thereby reducing the difficulty of cleaning.
Preferably, the organic solvent is diesel. The diesel oil has good dissolving capacity for organic matters such as lubricating oil and the like, and tar and asphalt on the exchange cock 31 can be cleaned. To ensure that the soil is completely dissolved, the exchange cock 31 is immersed in the organic solvent and held for 2-6 hours. Among them, the optimum retention time is 4 hours.
Preferably, the lubricant is butter. The grease has certain compactness and viscosity while playing a lubricating role, so that the gap between the exchange cock 31 and the exchange valve body can be tightly filled with the grease, and air is prevented from entering from the gap between the exchange cock 31 and the switch valve.
Preferably, the side wall of the groove 21 is inclined and the inclined surface is inclined from the opening of the groove 21 to the air inlet pipe 22.
When the filling material 5 is compressed tightly by the groove 21, the gas pipe 3 and the end cover 4, the side wall of the groove 21 can enable the filling material 5 to receive a pressure towards the gas pipe 3 when being extruded by the end cover 4, so that the filling material 5 is attached to the side wall of the gas pipe 3, the gas pipe 3 and the gas inlet pipe 22 can be sealed, air or gas can be prevented from being mixed through a gap between the end cover 4 and the gas pipe 3, and the sealing performance can be further improved.
Preferably, the filling material 5 comprises an asbestos cord, the asbestos cord is wound on one end of the gas pipe 3 extending into the groove 21, and the outer side of the asbestos cord abuts against the side wall of the groove 21. Because the groove 21 is close to the coke oven 1, the temperature is high, the common filling material 5 is easy to melt or denature at high temperature, the sealing effect is reduced, and the safety accident can be caused seriously. The asbestos cord has strong heat resistance, can keep the performance unchanged for a long time, and ensures the sealing effect between the gas pipe 3 and the gas inlet pipe 22.
Preferably, the filling material 5 further comprises a colloid, and the colloid is continuously injected during the process of winding the asbestos cord around the gas pipe 3 to fix the asbestos cord. Because filling material 5 is the top-mounted, in order to solve the layering problem that asbestos rope winding process produced that drops, constantly pour into the colloid in order to fix the asbestos rope in the winding process of asbestos rope, the colloid can fill asbestos rope layer clearance simultaneously, increases the compactness of asbestos rope. The colloid is glass cement which is neutral and can not corrode objects, and meanwhile, the high viscosity of the glass cement can further improve the sealing property.
Preferably, the cross-section of the asbestos cord is rectangular. Compare in the asbestos rope of circular cross section, the asbestos rope that the cross section is the rectangle is compacter at the winding in-process, can not have the clearance.
Preferably, the cross-sectional dimension of the asbestos cord is 0.3mm by 0.3 mm.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. The method for preventing the detonation of the coke oven gas is characterized in that a base (2) is arranged at the bottom of the coke oven (1), the base (2) comprises a groove (21) and an air inlet pipe (22), the air inlet pipe (22) is communicated with the bottom of the groove (21) and the interior of the coke oven (1), one end of a gas pipe (3) is fixed in the groove (21) through an end cover (4) sleeved on the gas pipe (3), and the gas pipe (3) is provided with a switch valve, and the method comprises the following steps:
-removing an exchange cock (31) from the on-off valve;
cleaning the surface of the exchange cock (31);
-applying a lubricant on the surface of the exchange cock (31);
-fitting the exchange cock (31) into the on-off valve;
opening the end cap (4);
-arranging a filling material (5) in said groove (21);
closing the end cap (4) and abutting the end cap (4) against the filler material (5).
2. The method of preventing coke oven gas detonations according to claim 1, characterized in that cleaning the surface of the exchange cock (31) comprises rubbing the surface of the exchange cock (31) with sandpaper.
3. The method of preventing coke oven gas detonations according to claim 1, characterized in that cleaning the surface of the exchange cock (31) comprises immersing the exchange cock (31) in an organic solvent.
4. The method of preventing detonation of coke oven gas as claimed in claim 3, wherein the organic solvent is diesel.
5. The method of preventing detonation of coke oven gas as claimed in claim 1, wherein the lubricant is butter.
6. The method of preventing detonation of coke oven gas according to claim 1, characterized in that the side walls of the groove (21) are beveled and the bevel is inclined from the opening of the groove (21) to the inlet pipe (22).
7. The method of preventing coke oven gas detonations according to claim 1, characterized in that the filling material (5) comprises an asbestos cord, which is wound around the end of the gas pipe (3) protruding into the groove (21), the outer side of the asbestos cord abutting against the side wall of the groove (21).
8. The method for preventing the detonation of coke oven gas according to claim 7, characterized in that the filling material (5) further comprises a glue, which is continuously injected during the process of winding the asbestos cord around the gas pipe (3) to fix the asbestos cord.
9. The method of preventing coke oven gas detonations of claim 7, wherein the asbestos cord is rectangular in cross-section.
10. The method of preventing coke oven gas detonations of claim 9, wherein the cross-sectional dimension of the asbestos cord is 0.3mm by 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110763596.0A CN113355112A (en) | 2021-07-06 | 2021-07-06 | Method for preventing coke oven gas from detonating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110763596.0A CN113355112A (en) | 2021-07-06 | 2021-07-06 | Method for preventing coke oven gas from detonating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113355112A true CN113355112A (en) | 2021-09-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110763596.0A Pending CN113355112A (en) | 2021-07-06 | 2021-07-06 | Method for preventing coke oven gas from detonating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113355112A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040118746A1 (en) * | 2002-12-18 | 2004-06-24 | Chevron U.S.A. Inc. | Safe and automatic method for preparation of coke for removal from a coke vessel |
| KR20140080364A (en) * | 2012-12-20 | 2014-06-30 | 주식회사 포스코 | Protect cover appratus for adjust bolt and plunger plug of coke oven door |
| CN106883868A (en) * | 2015-12-16 | 2017-06-23 | 鞍钢股份有限公司 | Method for preventing basement of coke oven from detonating |
| CN107841318A (en) * | 2017-12-22 | 2018-03-27 | 中冶焦耐(大连)工程技术有限公司 | One-way heating system and heating method of externally heated low-rank pulverized coal continuous carbonization furnace |
-
2021
- 2021-07-06 CN CN202110763596.0A patent/CN113355112A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040118746A1 (en) * | 2002-12-18 | 2004-06-24 | Chevron U.S.A. Inc. | Safe and automatic method for preparation of coke for removal from a coke vessel |
| KR20140080364A (en) * | 2012-12-20 | 2014-06-30 | 주식회사 포스코 | Protect cover appratus for adjust bolt and plunger plug of coke oven door |
| CN106883868A (en) * | 2015-12-16 | 2017-06-23 | 鞍钢股份有限公司 | Method for preventing basement of coke oven from detonating |
| CN107841318A (en) * | 2017-12-22 | 2018-03-27 | 中冶焦耐(大连)工程技术有限公司 | One-way heating system and heating method of externally heated low-rank pulverized coal continuous carbonization furnace |
Non-Patent Citations (2)
| Title |
|---|
| 郑明东主编: "《炼焦学 第3版》", 30 September 2005, 北京：冶金工业出版社 * |
| 鞍山钢铁大学编: "《炼焦化学基础》", 31 March 1976 * |
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Application publication date: 20210907 |