CN109355456A - A kind of converter coal gas purification recycles and combines the device and application method of final dusting - Google Patents
A kind of converter coal gas purification recycles and combines the device and application method of final dusting Download PDFInfo
- Publication number
- CN109355456A CN109355456A CN201811605176.4A CN201811605176A CN109355456A CN 109355456 A CN109355456 A CN 109355456A CN 201811605176 A CN201811605176 A CN 201811605176A CN 109355456 A CN109355456 A CN 109355456A
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- gas
- flue
- chimney
- converter
- coal gas
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/38—Removal of waste gases or dust
- C21C5/40—Offtakes or separating apparatus for converter waste gases or dust
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The device and application method of final dusting are recycled and combined the present invention provides a kind of converter coal gas purification, not only can guarantee system run all right, and can effectively solve the problems, such as that purified dust content of gas is excessively high and smoke stack emission concentration is often exceeded, it is highly-safe；It includes converter, chimney, enclosed hood, converter is installed in enclosed hood, enclosed hood is connected separately with gas purification recovery system, secondary flue gas dust pelletizing system, gas purification recovery system includes the gasification cooling flue being linked in sequence, wet cooling tower, gas valve, Gas Cleaning With Bag House device, gas fan, three-way switch valve, secondary flue gas dust pelletizing system includes the smoke duster being connected, smoke exhaust fan, gasification cooling flue is set to above converter after passing through enclosed hood, nitrogen mouth is provided on gasification cooling flue, chimney includes coal gas diffusion chimney, chimney, coal gas diffusion chimney is connected with three-way switch valve, smoke duster is connected with enclosed hood, smoke exhaust fan connects chimney.
Description
Technical field
The present invention relates to metallurgy industry pneumatic steelmaking environmental technology field, specially a kind of converter coal gas purification is recycled and is tied
Close the device and application method of final dusting.
Background technique
Existing steel converter coal gas purification recovery process mainly has two kinds of OG method (wet process) and LT method (dry method)；OG method master
It uses Venturi tube as cleaning equipment, then the water spray washing of converter raw coke oven gas is dusted in Venturi tube, but cleaning equipment
It is easy to produce fouling blockage problem with pipeline, clean-up effect cannot be guaranteed, and systematic running cost is then directed to wet process system with quite high
System there are the problem of, develop LT method, LT method cleaning equipment mainly uses electrostatic precipitator, and is removed by positive and negative electrode
Dirt, since electrostatic precipitator operating temperature is at 150 DEG C or so, needing directly to spray water to converter raw coke oven gas is evaporated cooling, and
Due to needing to control steel-making overall process, so that raw gas temperature and amount of water sprayed are difficult to control, electrostatic precipitator electrode is just
It is easy to corrosion fracture, to influence efficiency of dust collection；Therefore above-mentioned two kinds of methods run unstable, purified coal gas dust content
Amount be still it is relatively high, also will when often result in smoke stack emission concentration over-standard.
Summary of the invention
For existing steel converter coal gas purification recovery process method, system fluctuation of service, purified coal gas contains
The problem that dust quantity is still higher and smoke stack emission concentration is often exceeded, the present invention provides a kind of recycling of converter coal gas purification
And the device and application method of final dusting are combined, it not only can guarantee system run all right, and can effectively solve purified
The problem that dust content of gas is excessively high and smoke stack emission concentration is often exceeded, it is highly-safe.
Its technical solution is such that a kind of converter coal gas purification recycles and combines the device of final dusting comprising turns
Furnace, chimney, it is characterised in that: it further includes enclosed hood, and the converter is installed in the enclosed hood, and the enclosed hood connects respectively
It is connected to gas purification recovery system, secondary flue gas dust pelletizing system, the gas purification recovery system includes the vaporization being linked in sequence
Cooling stack, wet cooling tower, gas valve, Gas Cleaning With Bag House device, gas fan, three-way switch valve, the secondary flue gas remove
Dirt system includes the smoke duster being connected, smoke exhaust fan, and the gasification cooling flue is set to after passing through the enclosed hood
Above the converter, it being provided with nitrogen mouth on the gasification cooling flue, the chimney includes coal gas diffusion chimney, chimney,
The coal gas diffusion chimney is connected with the three-way switch valve, and the smoke duster is connected with the enclosed hood, described
Smoke exhaust fan connects the chimney.
It is further characterized by:
There are height gap, the tail ends of the gasification cooling flue between the smoke inlet of the gasification cooling flue and the converter
It is set as arc-shaped, the nitrogen mouth is set to the gasification cooling flue tail end；
The wet cooling tower, Gas Cleaning With Bag House device are cylindrical structure, described three-way switch valve one end and the coal gas
Blower is connected, the other end connects the coal gas diffusion chimney, third end connects external gas chamber, the coal gas diffusion chimney
Top discharge outlet is connected to atmosphere.
A kind of converter coal gas purification recycles and the application method of the device that combines final dusting, it is characterised in that: it includes
Following steps:
(1), as O in flue gas2When content is less than 2%, flue gas is directly entered gasification cooling flue and is cooled down indirectly, subsequently enters
Direct water-spraying control in wet cooling tower, gas valve are opened, and flue gas after cooling, which enters in Gas Cleaning With Bag House device, to be dusted,
Three-way switch valve is sent by gas fan after dedusting, if gas content, less than 30%, the three-way switch valve switches to release
Shelves, coal gas enter coal gas diffusion chimney and are diffused；If gas content is not less than 30%, the three-way switch valve is switched to back
Shelves are received, coal gas enters external gas chamber and recycled；
(2), as O in flue gas2When content is not less than 2%, the gas valve is closed, is then filled with nitrogen from nitrogen mouth, by the vapour
The flue gas changed in cooling stack carries out completely burned after the discharge of the smoke inlet of the gasification cooling flue, and the flue gas after burning is logical
Cross enclosed hood trapping after enter smoke duster in be filtered, until be filled into meet discharge standard after be sent by smoke exhaust fan
Chimney is discharged.
It is further characterized by:
In the step (1), direct flue-gas temperature after cooling is at 260 DEG C hereinafter, the dust contained flue gas concentration after dedusting is not more than
10mg/ marks m3。
The invention has the advantages that converter is installed in enclosed hood, enclosed hood is connected separately with gas purification recycling system
System, secondary flue gas dust pelletizing system, then the oxygen content of smoke gas that can be generated according to different times, i.e., oxygen content is lower can just enter coal
It in gas purification-recovery system, is then dusted by Gas Cleaning With Bag House device, while wider by Gas Cleaning With Bag House device
Operating temperature, it is easy to flue-gas temperature and amount of water sprayed are controlled, to improve efficiency of dust collection；When the oxygen content of flue gas is higher, cutting
Gas valve, while being passed through nitrogen and driving the flue gas in gasification cooling flue out of, it is fired completely in gasification cooling flue smoke inlet
It burns, the flue gas after burning is mixed with other flue gases, then by smoke duster dedusting rear discharge up to standard, to effectively solve
It has determined the problem that purified dust content of gas is excessively high and smoke stack emission concentration is often exceeded, safety is also relatively high, and into
One step improves gas purification stabilization efficiency and purified gas quality.
Detailed description of the invention
Fig. 1 is Structure and Process schematic diagram of the invention.
Specific embodiment
As shown in Figure 1, a kind of converter coal gas purification of the present invention recycles and combines the device of final dusting comprising converter 1,
Chimney further includes enclosed hood 11, and converter 1 is installed in enclosed hood 11, and 1 enclosing of converter can be got up by enclosed hood 11, made
The flue gas of generation is enclosed in enclosed hood 11；Enclosed hood 11 is connected separately with gas purification recovery system, secondary flue gas dedusting system
System, gas purification recovery system include that gasification cooling flue 2, wet cooling tower 4, gas valve 6, the coal gas cloth bag of sequential connection remove
Dirt device 7, gas fan 8, three-way switch valve 9, and wet cooling tower 4, gas valve 6, Gas Cleaning With Bag House device 7, gas fan 8,
Three-way switch valve 9, coal gas diffusion chimney 10 are connected between external gas chamber by gas piping 5, secondary flue gas dedusting system
System includes smoke duster 12, the smoke exhaust fan 13 being connected, and gasification cooling flue 2 is set to converter 1 after passing through enclosed hood 11
Top is provided with nitrogen mouth 3 on gasification cooling flue 2, and chimney includes coal gas diffusion chimney 10, chimney 14, coal gas diffusion cigarette
Chimney 10 is connected with three-way switch valve 9, and smoke duster 12 is connected with enclosed hood 11, and smoke exhaust fan 13 connects chimney
14。
There are height gap between the smoke inlet and converter 1 of gasification cooling flue 2, the tail end of gasification cooling flue 2 is arranged
To be arc-shaped, nitrogen mouth 3 is set to 2 tail end of gasification cooling flue；Wet cooling tower 4, Gas Cleaning With Bag House device 7 are cylinder
Body structure, wet cooling tower 4 is interior to be equipped with water injector, directly sprays water to the raw coke oven gas passed through and is evaporated cooling；Threeway switching
9 one end of valve is connected with gas fan 8, the other end connect coal gas diffusion chimney 10, third end connects external gas chamber, and coal gas is put
The top discharge outlet for dissipating chimney 10 is connected to atmosphere.
Wherein, converter 1 is steelmaking equipment；
Gasification cooling flue 2 is made of steel pipe, and 2 tail end of gasification cooling flue carries out pipe and surrounds round to pipe welding, in steel pipe
It is passed through deoxygenation soft water and indirect vaporizing cooling is carried out to the high-temperature flue gas by gasification cooling flue 2；
Raw coke oven gas access can be cut off by gas valve 6 or adjusts raw coke oven gas flow；
Gas fan 8 provides power for the flowing of raw coke oven gas, and gas fan 8 is arranged in Gas Cleaning With Bag House device 7 and threeway switches
Between valve 9；Three-way switch valve 9 switches between recycling and release according to gas composition；
12 shell of smoke duster is body structure, is internally provided with filter bag, can be dusted to flue gas；
Smoke exhaust fan 13 provides power for the flowing of flue gas.
A kind of converter coal gas purification recycles and the application method of the device that combines final dusting comprising following steps:
(1), as O in raw coke oven gas (i.e. containing the flue gas of coal gas)2When content is less than 2%, i.e., burnt before converter 1 phase and it is rear burn the phase it
Between the raw coke oven gas that generates can be directly entered gasification cooling flue 2 and cooled down indirectly, subsequently enter in wet cooling tower 4 directly
Water-spraying control, for the raw gas temperature after direct water-spraying control at 260 DEG C hereinafter, gas valve 6 is opened, flue gas after cooling enters coal
It is dusted in gas bag filter, the dust contained flue gas concentration after dedusting marks m no more than 10mg/3, the coal gas after dedusting passes through coal
Gas blower 8 is sent into three-way switch valve 9, and three-way switch valve 9 carries out recycling according to gas content and diffuses switching, if gas content is small
In 30%, the three-way switch valve switches to release shelves, and coal gas enters coal gas diffusion chimney and diffused；If gas content is not
Less than 30%, three-way switch valve 9 switches to recycling shelves, and coal gas enters external gas chamber and recycled；
(2), as O in raw coke oven gas2When content is not less than 2%, i.e., the flue gas generated in the charging of converter 1, tapping and other periods, just
It not can enter in gas purification recovery system, at this moment gas purification recovery system access can be cut off by gas valve 6, due to coal gas
Blower is again started up that comparison is slow, and power wastage is big after stopping, then 8 revolving speed of gas fan is turned down, so that gas fan is with lower
Rotary speed working, similar idle running, while being filled with nitrogen from nitrogen mouth 3, by the raw coke oven gas in gasification cooling flue 2 from Vaporizing cooling
After the smoke inlet discharge of flue 2, completely burned is carried out in 2 smoke inlet of gasification cooling flue, flue gas and other flue gases after burning
It mixes, and enters in smoke duster 12 after being trapped by enclosed hood 11 and be filtered, until after being filled into and meeting discharge standard
Chimney 14 is sent by smoke exhaust fan 13 to be discharged.
In gas purification recovery system of the invention, use Gas Cleaning With Bag House device 7, eliminate existing Venturi tube or
Electrostatic precipitator, can effectively improve purification efficiency, and the operating temperature of stable equipment operation, Gas Cleaning With Bag House device 7 reaches as high as
260 DEG C, operating temperature range width is easily controlled raw gas temperature and amount of water sprayed, and according to Gas Cleaning With Bag House device 7
Design feature, also changes previous gas purification recovery system operating process, and gas purification recovery system operating procedure obtains
Innovation, feature are to the smoke components that control enters Gas Cleaning With Bag House device 7, do not allow containing O2Amount is more than explosion limit
Flue gas enter in Gas Cleaning With Bag House device 7, it is highly-safe, and further improve gas purification stabilization efficiency and clean coal makings
Amount, smoke stack emission concentration is lower, and energy-saving and environmental protection effect is obvious, can replace existing wet cleaning recovery system completely.
Claims (5)
1. a kind of converter coal gas purification recycles and combines the device of final dusting comprising converter, chimney, it is characterised in that: its
Further include enclosed hood, the converter is installed in the enclosed hood, the enclosed hood be connected separately with gas purification recovery system,
Secondary flue gas dust pelletizing system, the gas purification recovery system include the gasification cooling flue being linked in sequence, wet cooling tower, coal
Air valve, Gas Cleaning With Bag House device, gas fan, three-way switch valve, the secondary flue gas dust pelletizing system include the flue gas being connected
Deduster, smoke exhaust fan, the gasification cooling flue are set to above the converter after passing through the enclosed hood, and the vaporization is cold
But nitrogen mouth is provided on flue, the chimney includes coal gas diffusion chimney, chimney, the coal gas diffusion chimney and described three
Direction changeover valve is connected, and the smoke duster is connected with the enclosed hood, and the smoke exhaust fan connects the chimney.
2. a kind of converter coal gas purification according to claim 1 recycles and combines the device of final dusting, it is characterised in that:
There are height gap between the smoke inlet of the gasification cooling flue and the converter, the tail end of the gasification cooling flue is arranged
To be arc-shaped, the nitrogen mouth is set to the gasification cooling flue tail end.
3. a kind of converter coal gas purification according to claim 1 recycles and combines the device of final dusting, it is characterised in that:
The wet cooling tower, Gas Cleaning With Bag House device are cylindrical structure, described three-way switch valve one end and the gas fan
It is connected, the other end connects the coal gas diffusion chimney, third end connects external gas chamber, the top of the coal gas diffusion chimney
Discharge outlet is connected to atmosphere.
4. a kind of any converter coal gas purification recycles and the use of the device that combines final dusting according to claim 1 ~ 3
Method, it is characterised in that: itself the following steps are included:
(1), as O in flue gas2When content is less than 2%, flue gas is directly entered gasification cooling flue and is cooled down indirectly, subsequently enters steaming
Direct water-spraying control in cooling tower is sent out, gas valve is opened, and flue gas after cooling, which enters in Gas Cleaning With Bag House device, to be dusted, and is removed
Three-way switch valve is sent by gas fan after dirt, if gas content, less than 30%, the three-way switch valve switches to release
Shelves, coal gas enter coal gas diffusion chimney and are diffused；If gas content is not less than 30%, the three-way switch valve is switched to back
Shelves are received, coal gas enters external gas chamber and recycled；
(2), as O in flue gas2When content is not less than 2%, the gas valve is closed, is then filled with nitrogen from nitrogen mouth, by the vapour
The flue gas changed in cooling stack carries out completely burned after the discharge of the smoke inlet of the gasification cooling flue, and the flue gas after burning is logical
Cross enclosed hood trapping after enter smoke duster in be filtered, until be filled into meet discharge standard after be sent by smoke exhaust fan
Chimney is discharged.
5. a kind of converter coal gas purification according to claim 5 recycles and the application method of the device that combines final dusting,
It is characterized by: in the step (1), direct flue-gas temperature after cooling is at 260 DEG C hereinafter, dust contained flue gas concentration after dedusting
M is marked no more than 10mg/3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605176.4A CN109355456A (en) | 2018-12-26 | 2018-12-26 | A kind of converter coal gas purification recycles and combines the device and application method of final dusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811605176.4A CN109355456A (en) | 2018-12-26 | 2018-12-26 | A kind of converter coal gas purification recycles and combines the device and application method of final dusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109355456A true CN109355456A (en) | 2019-02-19 |
Family
ID=65329455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811605176.4A Withdrawn CN109355456A (en) | 2018-12-26 | 2018-12-26 | A kind of converter coal gas purification recycles and combines the device and application method of final dusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109355456A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241284A (en) * | 2019-07-24 | 2019-09-17 | 马鞍山钢铁股份有限公司 | A kind of flue gas particles of steelmaking converter purification system and purification method again |
| CN116240334A (en) * | 2023-03-07 | 2023-06-09 | 中冶京诚工程技术有限公司 | Converter secondary dust removal end system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741814A (en) * | 1993-07-30 | 1995-02-10 | Sumitomo Metal Ind Ltd | Treatment of waste gas in converter |
| CN101033497A (en) * | 2007-04-06 | 2007-09-12 | 上海宝钢工程技术有限公司 | Converter coal gas wet-type cloth bag purification recovering process and system |
| CN101851695A (en) * | 2010-05-17 | 2010-10-06 | 尹华勤 | Dry bag-type coal gas purifying and recycling process for oxygen-resistant converter |
| CN101942538A (en) * | 2010-06-24 | 2011-01-12 | 北京国华新兴节能环保科技有限公司 | Process and equipment for dust collection and heat recovery by converter gas dry method |
| CN102899444A (en) * | 2012-10-26 | 2013-01-30 | 通化市五一环保科技股份有限公司 | System and method for treating converter flue gas |
| CN205064880U (en) * | 2015-10-30 | 2016-03-02 | 攀钢集团西昌钢钒有限公司 | Glasses valve voltage -sharing system of blast furnace raw coke oven gas |
| CN209568124U (en) * | 2018-12-26 | 2019-11-01 | 无锡雪浪环境科技股份有限公司 | A kind of converter coal gas purification recycles and combines the device of final dusting |
-
2018
- 2018-12-26 CN CN201811605176.4A patent/CN109355456A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741814A (en) * | 1993-07-30 | 1995-02-10 | Sumitomo Metal Ind Ltd | Treatment of waste gas in converter |
| CN101033497A (en) * | 2007-04-06 | 2007-09-12 | 上海宝钢工程技术有限公司 | Converter coal gas wet-type cloth bag purification recovering process and system |
| CN101851695A (en) * | 2010-05-17 | 2010-10-06 | 尹华勤 | Dry bag-type coal gas purifying and recycling process for oxygen-resistant converter |
| CN101942538A (en) * | 2010-06-24 | 2011-01-12 | 北京国华新兴节能环保科技有限公司 | Process and equipment for dust collection and heat recovery by converter gas dry method |
| CN102899444A (en) * | 2012-10-26 | 2013-01-30 | 通化市五一环保科技股份有限公司 | System and method for treating converter flue gas |
| CN205064880U (en) * | 2015-10-30 | 2016-03-02 | 攀钢集团西昌钢钒有限公司 | Glasses valve voltage -sharing system of blast furnace raw coke oven gas |
| CN209568124U (en) * | 2018-12-26 | 2019-11-01 | 无锡雪浪环境科技股份有限公司 | A kind of converter coal gas purification recycles and combines the device of final dusting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241284A (en) * | 2019-07-24 | 2019-09-17 | 马鞍山钢铁股份有限公司 | A kind of flue gas particles of steelmaking converter purification system and purification method again |
| CN116240334A (en) * | 2023-03-07 | 2023-06-09 | 中冶京诚工程技术有限公司 | Converter secondary dust removal end system |
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| CB02 | Change of applicant information |
Address after: 214000 no.2020 Lihu Avenue, Binhu District, Wuxi City, Jiangsu Province Applicant after: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 214128 Shuangxin economic Park, Taihu street, Binhu District, Wuxi City, Jiangsu Province Applicant before: WUXI XUELANG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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Application publication date: 20190219 |
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| WW01 | Invention patent application withdrawn after publication |