CN117285945A - System and method for removing coke powder deposited inside dry coke quenching circulation system - Google Patents
System and method for removing coke powder deposited inside dry coke quenching circulation system Download PDFInfo
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- CN117285945A CN117285945A CN202311445926.7A CN202311445926A CN117285945A CN 117285945 A CN117285945 A CN 117285945A CN 202311445926 A CN202311445926 A CN 202311445926A CN 117285945 A CN117285945 A CN 117285945A
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- ash
- ash conveying
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- branch pipe
- coke
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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
- C10B43/00—Preventing or removing incrustations
- C10B43/02—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
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- 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)
- Coke Industry (AREA)
Abstract
本发明涉及一种干熄焦循环系统内部沉积焦粉的清除系统及其方法，属于干熄焦技术领域，包括干熄焦炉和锅炉出口竖井烟道，干熄焦炉的下气室安装有第一清灰机构，锅炉出口竖井烟道安装有第二清灰机构；第一清灰机构包括设置在下气室底部的第一输灰管道及设置在第一输灰管道和下气室之间的第一输灰支管，第一输灰管道的一端设置有配风硫化阀门，另一端与除尘管道相连接；第二清灰结构包括连接在锅炉出口竖井烟道底部的第二输灰支管，第二输灰支管的出灰端设置有集灰斗，集灰斗的底部通过第三输灰支管与第二输灰管道相连接，第二输灰管道与与除尘管道相连接，本发明操作简单，使用方便，可以在线清灰。The invention relates to a system and a method for removing coke powder deposited inside a dry coke quenching circulation system. It belongs to the technical field of dry coke quenching and includes a dry quenching coke oven and a boiler outlet shaft flue. The lower air chamber of the dry quenching coke oven is equipped with a The first ash cleaning mechanism, the boiler outlet shaft flue is equipped with a second ash cleaning mechanism; the first ash cleaning mechanism includes a first ash conveying pipe arranged at the bottom of the lower air chamber and a first ash conveying pipe arranged between the first ash conveying pipe and the lower air chamber. The first ash conveying branch pipe, one end of the first ash conveying pipe is provided with an air distribution vulcanization valve, and the other end is connected to the dust removal pipe; the second ash cleaning structure includes a second ash conveying branch pipe connected to the bottom of the boiler outlet shaft flue, An ash collecting hopper is provided at the ash outlet end of the second ash conveying branch pipe. The bottom of the ash collecting hopper is connected to the second ash conveying pipe through the third ash conveying branch pipe. The second ash conveying pipe is connected to the dust removal pipe. The operation of the present invention Simple, easy to use, and can be cleaned online.
Description
Technical Field
The invention relates to a system and a method for removing deposited coke powder in a coke dry quenching circulation system, and belongs to the technical field of coke dry quenching.
Background
The dry quenching is a novel quenching process utilizing the direct contact heat exchange of the hot coke and the inert gas, and a relatively closed circulation system is arranged in the dry quenching. In the dry quenching furnace, the coke and inert gas are directly subjected to heat exchange, and the coke is cooled to below 200 ℃ and discharged. The circulating fan blows the inert gas for cooling the coke into the dry quenching furnace from the gas supply device at the bottom of the dry quenching furnace, and the inert gas exchanges heat with the red hot coke in a countercurrent way. The temperature of the hot circulating gas discharged from the dry quenching furnace is about 800-960 ℃, the hot circulating gas enters a dry quenching boiler for heat exchange after being dedusted by a primary deduster, and the temperature is reduced to 160-180 ℃. The cold circulating gas from the boiler is dedusted by a multi-cyclone secondary deduster, pressurized by a circulating fan, cooled to 135 ℃ by a heat pipe exchanger and then enters a dry quenching furnace for recycling. The coke powder separated by the primary dust remover and the secondary dust remover is collected in a storage tank by special conveying equipment for outward transportation.
In normal dry quenching production, the content of coke powder dust in circulating gas entering a boiler is up to 8-12 g/m, a boiler outlet is connected with a secondary dedusting inlet through a shaft flue, and the coke powder in the circulating gas can be deposited at the bottom of the shaft flue. The circulating gas flow sectional area is reduced, the gas flow speed is accelerated, and the high-flow-rate gas carrying the coke powder causes abrasion to the cyclone and the gas guide pipe in the secondary dust removal. The efficiency of secondary dust removal is affected, and the abrasion to downstream equipment is increased.
The circulating gas blown out by the dry quenching circulating fan enters the dry quenching furnace through an upper air chamber and a lower air chamber at the bottom of the dry quenching furnace to finish the quenching process, and if secondary dust removal faults are encountered in the dry quenching production process or the secondary dust removal efficiency is low due to production load change, the problems of coke powder being brought into the lower air chamber of the dry quenching furnace through the circulating gas to deposit can be caused, a large amount of coke powder accumulation in the lower air chamber can cause the blockage of a circulating gas air channel, and finally the dry quenching furnace is required to be shut down for maintenance.
At present, no method for on-line cleaning is available for depositing coke powder at the bottom of a lower air chamber in a dry quenching system and depositing coke powder in a vertical shaft flue of a boiler outlet. If coke powder deposition occurs, production and maintenance are likely to be stopped. The method of manually entering the system equipment after the furnace is shut down is generally adopted for cleaning, so that the production is influenced, and the potential safety hazard caused by overhaul operation is increased.
Disclosure of Invention
The invention provides a system and a method for removing deposited coke powder in a dry quenching circulation system, which are simple to operate and convenient to use and can remove ash online, so as to solve the technical problems in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is that a system for removing deposited coke powder in a dry quenching circulating system comprises a dry quenching furnace and a boiler outlet shaft flue, wherein a first ash removing mechanism is arranged in a lower air chamber of the dry quenching furnace, and a second ash removing mechanism is arranged in the boiler outlet shaft flue;
the first ash removing mechanism comprises a first ash conveying pipeline arranged at the bottom of the lower air chamber and a first ash conveying branch pipe arranged between the first ash conveying pipeline and the lower air chamber, one end of the first ash conveying pipeline is provided with an air distribution vulcanizing valve, the other end of the first ash conveying pipeline is connected with a dust removing pipeline, and a first branch pipe control valve is arranged on the first ash conveying branch pipe;
the second ash removal structure is including connecting the second ash conveying branch pipe in boiler export shaft flue bottom, the ash end of second ash conveying branch pipe is provided with the album ash bucket, the bottom of album ash bucket is connected with the second ash conveying pipeline through the third ash conveying branch pipe, the second ash conveying pipeline is connected with the dust removal pipeline, be provided with second branch pipe control valve on second ash conveying branch pipe and the third ash conveying branch pipe respectively.
Preferably, the number of the first ash conveying branch pipes is three, and the first ash conveying branch pipes are respectively arranged along the bottom 45 DEG, 90 DEG and 135 DEG directions of the lower air chamber.
Preferably, the ash inlet end of the second ash conveying branch pipe is arranged at the position, which is 200mm above the angular position of the shaft flue of the furnace outlet, of the second ash conveying branch pipe, and the included angle between the second ash conveying branch pipe and the side wall of the shaft flue of the furnace outlet is 45 degrees.
Preferably, one end of the second ash conveying pipeline far away from the dust removing pipeline is also provided with a compressed air pipe.
When the system fails, the first branch pipe control valve and the second branch pipe control valve are opened, and the deposited dust in the lower air chamber and the flue of the furnace outlet shaft enters the dust removing pipeline through the first dust conveying pipeline and the second dust conveying pipeline respectively under the action of negative pressure of the dust removing pipeline.
Compared with the prior art, the invention has the following technical effects: the invention has simple structure and convenient use, utilizes the negative pressure of the existing dust removing pipeline to carry out quick dust removal on the lower air chamber and the furnace outlet shaft flue, can carry out on-line operation, and effectively solves the problems of increased system resistance, blockage of air channels, abrasion equipment and the like caused by the deposition of coke powder in the existing dry quenching system.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of a first ash removing mechanism in the present invention.
Fig. 3 is a schematic structural diagram of a second ash removing mechanism in the present invention.
Fig. 4 is a schematic view of the arrangement structure of the compressed air pipe in the present invention.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 4, a coke powder deposition removal system in a dry quenching circulation system comprises a dry quenching furnace 1 and a boiler outlet shaft flue 2, wherein a first ash removal mechanism 3 is arranged in a lower air chamber of the dry quenching furnace 1, and a second ash removal mechanism 4 is arranged in the boiler outlet shaft flue 2;
the first ash cleaning mechanism 3 comprises a first ash conveying pipeline 5 arranged at the bottom of the lower air chamber and a first ash conveying branch pipe 6 arranged between the first ash conveying pipeline and the lower air chamber, one end of the first ash conveying pipeline 5 is provided with an air distribution vulcanizing valve 7, the other end of the first ash conveying pipeline is connected with a dust removing pipeline, the first ash conveying branch pipe 6 is provided with a first branch pipe control valve 8, the number of the first ash conveying branch pipes 6 is three, and the first ash conveying branch pipes are respectively arranged along the bottom 45 DEG, 90 DEG and 135 DEG directions of the lower air chamber. The second ash removal structure 4 comprises a second ash conveying branch pipe 9 connected to the bottom of the boiler outlet shaft flue 2, an ash collecting hopper 10 is arranged at the ash outlet end of the second ash conveying branch pipe 9, the bottom of the ash collecting hopper 10 is connected with a second ash conveying pipeline 12 through a third ash conveying branch pipe 11, the second ash conveying pipeline 12 is connected with a dust removing pipeline, and second branch pipe control valves 13 are respectively arranged on the second ash conveying branch pipe 9 and the third ash conveying branch pipe 11. The ash inlet end of the second ash conveying branch pipe 9 is arranged at the position, which is 200mm above the angular position of the shaft flue of the furnace outlet, of the second ash conveying branch pipe, and the included angle between the second ash conveying branch pipe and the side wall of the shaft flue of the furnace outlet is 45 degrees. The end of the second ash conveying pipe 12 remote from the dust removal pipe is also provided with a compressed air pipe 14.
The existing dry quenching circulating system is a relatively closed circulating system which consists of a dry quenching furnace, a lower air chamber of the dry quenching furnace, primary dust removal, a boiler, a shaft flue of a boiler outlet, a circulating fan, a heat pipe heat exchanger and other devices. The hot coke in the dry quenching furnace and the inert gas are in direct contact heat exchange, and the inert gas in the system is circularly used in the system by virtue of the power provided by the circulating fan. The inert gas is used as a heat exchange medium to transfer the heat of the hot coke to the boiler to generate steam for completing heat exchange.
In order to clean coke powder in a lower air chamber and a boiler outlet shaft flue, three first ash conveying branch pipes 6 are arranged on a furnace shell at the bottom of the lower air chamber for dry quenching in the directions of 45 DEG, 90 DEG and 135 DEG, first branch pipe control valves 8 are arranged on the first ash conveying branch pipes 6, the first ash conveying branch pipes 6 are connected with first ash conveying pipelines 5, one ends of the first ash conveying pipelines 5 are provided with air distribution vulcanizing valves 7, and the other ends of the first ash conveying pipelines are connected with dust removing pipelines. When ash is removed, circulating gas blown out by the circulating fan passes through the air chamber to the inside of the dry quenching furnace to finish the heat exchange quenching process, the lower air chamber is a lower channel of circulating gas at the bottom of the dry quenching furnace, and the channel needs to be kept smooth and can not deposit coke powder. If the system fails, coke powder is deposited in the lower air chamber, and an effective method is needed to be adopted for cleaning. As shown in fig. 2, the air distribution vulcanizing valve at the tail end of the first ash conveying pipeline 5 is adjusted to be opened, and as the first ash conveying pipeline 5 is connected to a nearby dust removing pipeline, the dust removing pipeline is connected to a dry quenching ground dust removing station, a certain negative pressure is formed in the pipeline. The air intake can be adjusted by the air distribution and vulcanization valve, and the air flows into the nearby dust removal pipeline 1 through the air distribution and vulcanization valve and the first ash conveying pipeline 5.
The first ash conveying branch pipes 6 are connected with the first ash conveying pipeline 5, and negative pressure is formed in each ash conveying branch pipe due to the influence of jet flow. And because the ash conveying branch pipe is communicated with the lower air chamber, the deposited coke powder of the lower air chamber is sucked out through the negative pressure in the ash conveying branch pipe. And according to the position of the coke powder deposited at the bottom of the lower air chamber, the ash conveying valve on the first ash conveying branch pipe can be selectively adjusted to be opened and closed, the coke powder in the lower air chamber flows into the first ash conveying pipeline by the suction force of negative pressure in each ash conveying branch pipe, the coke powder in the first ash conveying pipeline and the air sucked by the air distribution vulcanizing valve are mixed and vulcanized and then are collected by a nearby dust removing pipeline, and finally, the coke powder is conveyed to a dry quenching ground dust removing station after being humidified.
As shown in fig. 3 and 4, a second ash conveying branch pipe 9 is installed at a position 200mm above the 90-degree corner position of the lower part of the shaft flue of the boiler outlet, the second ash conveying branch pipe 9 is inclined at an angle of 45 degrees with the side wall of the shaft flue, the ash outlet end of the second ash conveying branch pipe 9 is provided with an ash collecting hopper 10, the ash collecting hopper is designed to be open at the upper part, the coke powder is convenient to clean and the ash conveying condition is convenient to observe, the lower part of the ash collecting hopper is shaped as a conical hopper, the bottom of the ash collecting hopper 10 is connected with a second ash conveying pipeline 12 through a third ash conveying branch pipe 11, the second ash conveying pipeline 12 is connected with a dust removing pipeline, and second branch pipe control valves 13 are respectively arranged on the second ash conveying branch pipe 9 and the third ash conveying branch pipe 11. When ash removal is carried out, the second branch pipe control valve 13 at the bottom of the ash collecting hopper is closed firstly, then the second branch pipe control valve 13 on the second ash conveying branch pipe 9 is opened slowly, coke powder deposited at the bottom of a flue of a boiler outlet shaft automatically flows to the ash collecting hopper under the action of gravity, the material level condition in the ash collecting hopper is confirmed through an observation hole at the top of the ash collecting hopper, the second branch pipe control valve 13 on the second ash conveying branch pipe 9 is closed after the coke powder is filled in the ash collecting hopper, and the output of the coke powder deposited at the bottom of the flue of the furnace outlet shaft is stopped. And then adjusting and opening a second branch pipe control valve 13 at the bottom of the ash collecting hopper, enabling the coke powder in the ash collecting hopper to flow into a second ash conveying pipeline 12 under the action of gravity, sucking the second ash conveying pipeline 12 into negative pressure by the nearby ash conveying pipeline because the second ash conveying pipeline 12 is connected with the nearby ash conveying pipeline, sucking all the coke powder flowing into the second ash conveying pipeline 12 into the nearby ash conveying pipeline, blowing air through a compressed air pipe if the ash conveying quantity is large and the suction force of the ash conveying pipeline is insufficient, and ensuring that all the coke powder output in the ash collecting hopper can be collected to a ground dust collecting station through an accessory dust collecting pipeline and finally collecting the coke powder of the ground dust collecting station for humidification and outward transportation.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311445926.7A CN117285945A (en) | 2023-11-02 | 2023-11-02 | System and method for removing coke powder deposited inside dry coke quenching circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311445926.7A CN117285945A (en) | 2023-11-02 | 2023-11-02 | System and method for removing coke powder deposited inside dry coke quenching circulation system |
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| CN117285945A true CN117285945A (en) | 2023-12-26 |
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| CN202311445926.7A Pending CN117285945A (en) | 2023-11-02 | 2023-11-02 | System and method for removing coke powder deposited inside dry coke quenching circulation system |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204513425U (en) * | 2015-03-10 | 2015-07-29 | 石福军 | A kind of negative pressure is from drawing-in type boiler flue dust stratification removal system |
| CN105485895A (en) * | 2015-12-29 | 2016-04-13 | 广州市祈雅典锅炉有限公司 | Built-in biomass gasification combustion hot water boiler |
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | A CDQ dedusting system and process capable of efficiently recovering heat energy |
| CN206112970U (en) * | 2016-09-20 | 2017-04-19 | 国电科学技术研究院 | Circulating fluidized bed boiler unit based on put out sediment technique futilely |
| CN206831536U (en) * | 2017-06-14 | 2018-01-02 | 内蒙古伊泰化工有限责任公司 | Coal-burning boiler back-end ductwork dust stratification remove device |
| US20190049122A1 (en) * | 2017-08-09 | 2019-02-14 | Fire Chief Industries LLC | Furnace |
| CN209193888U (en) * | 2018-09-17 | 2019-08-02 | 陕西黑猫焦化股份有限公司 | A kind of deashing device of coke dry quenching boiler bottom |
| CN113773866A (en) * | 2020-06-09 | 2021-12-10 | 瑞安市阀门一厂 | Air inlet closed-circuit system of dry quenching furnace |
| CN215808576U (en) * | 2021-08-10 | 2022-02-11 | 济钢集团国际工程技术有限公司 | On-line ash removing device for dry quenching gas circulating pipeline |
| CN218024297U (en) * | 2022-08-12 | 2022-12-13 | 鞍山华泰环能工程技术有限公司 | Dry quenching system and dry quenching boiler outlet flue dust discharging device |
| CN116179228A (en) * | 2023-02-28 | 2023-05-30 | 中冶焦耐(大连)工程技术有限公司 | A Ash Removal System for Bottom Flue of CDQ Boiler |
| CN221397802U (en) * | 2023-11-02 | 2024-07-23 | 襄垣县鸿达煤化有限公司 | System for removing deposited coke powder in coke dry quenching circulation system |
-
2023
- 2023-11-02 CN CN202311445926.7A patent/CN117285945A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204513425U (en) * | 2015-03-10 | 2015-07-29 | 石福军 | A kind of negative pressure is from drawing-in type boiler flue dust stratification removal system |
| CN105485895A (en) * | 2015-12-29 | 2016-04-13 | 广州市祈雅典锅炉有限公司 | Built-in biomass gasification combustion hot water boiler |
| CN206112970U (en) * | 2016-09-20 | 2017-04-19 | 国电科学技术研究院 | Circulating fluidized bed boiler unit based on put out sediment technique futilely |
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | A CDQ dedusting system and process capable of efficiently recovering heat energy |
| CN206831536U (en) * | 2017-06-14 | 2018-01-02 | 内蒙古伊泰化工有限责任公司 | Coal-burning boiler back-end ductwork dust stratification remove device |
| US20190049122A1 (en) * | 2017-08-09 | 2019-02-14 | Fire Chief Industries LLC | Furnace |
| CN209193888U (en) * | 2018-09-17 | 2019-08-02 | 陕西黑猫焦化股份有限公司 | A kind of deashing device of coke dry quenching boiler bottom |
| CN113773866A (en) * | 2020-06-09 | 2021-12-10 | 瑞安市阀门一厂 | Air inlet closed-circuit system of dry quenching furnace |
| CN215808576U (en) * | 2021-08-10 | 2022-02-11 | 济钢集团国际工程技术有限公司 | On-line ash removing device for dry quenching gas circulating pipeline |
| CN218024297U (en) * | 2022-08-12 | 2022-12-13 | 鞍山华泰环能工程技术有限公司 | Dry quenching system and dry quenching boiler outlet flue dust discharging device |
| CN116179228A (en) * | 2023-02-28 | 2023-05-30 | 中冶焦耐(大连)工程技术有限公司 | A Ash Removal System for Bottom Flue of CDQ Boiler |
| CN221397802U (en) * | 2023-11-02 | 2024-07-23 | 襄垣县鸿达煤化有限公司 | System for removing deposited coke powder in coke dry quenching circulation system |
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