CN201023017Y - Converter gas wet type cloth bag purifying and recovering device - Google Patents
Converter gas wet type cloth bag purifying and recovering device Download PDFInfo
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- CN201023017Y CN201023017Y CNU2007200687029U CN200720068702U CN201023017Y CN 201023017 Y CN201023017 Y CN 201023017Y CN U2007200687029 U CNU2007200687029 U CN U2007200687029U CN 200720068702 U CN200720068702 U CN 200720068702U CN 201023017 Y CN201023017 Y CN 201023017Y
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Abstract
The utility model relates to a gas purifying and recycling device with a converter and a wet-type cloth bag comprising a steaming gas flue, an evaporative cooler or a saturated spray tower, a wet-type cloth bag dust cleaner, a gas water seal, a valve, an emission chimney and an auto-control device. The evaporative cooler or a saturated spray tower is connected with the steaming gas flue through a dry sealed flexible connecting equipment replacing the water sealed connecting equipment, and the evaporative cooler or a saturated spray tower is connected with the wet-type cloth bag dust cleaner through a pipe, then the back of the wet-type cloth bag dust cleaner is connected with a gas pipe, further the gas pipe is provided with a venturi flow counter, a gas fan, a valve, a three-way diverter valve, a emission chimney and a water sealed valve. The utility model has the advantages that the gas purifying efficiency is high, the operation resistance and energy consumption are low, the gas recycling quantity is large, the pipe is not easily blocked, the strict environmental protection requirement is achieved, the purpose of recycling the gas and the steel-smelting of converter negative-energy are achieved.
Description
Technical field
The utility model relates to the pneumatic steelmaking of metallurgical steel mill to be produced, particularly a kind of coal gas of high temperature wet-type cloth bag purification and the retracting device in the convertor steelmaking process.
Background technology
At present steel mill's converter cleaning and recovering process mainly adopts two kinds of wet method (being called for short OG) and dry method (abbreviation LT).
The converter gas wet purifier that with OG is representative mainly is made up of secondary purification device and dewater unit.The first order: adopt sizing or manual path transfer overflow Venturi tube (being called for short a literary composition), its effect is to be the cooling and the thick dedusting of raw coke oven gas; The second level: adopt automatic path transfer Venturi tube (being called for short two literary compositions) or adopt circumferential weld washer (being called for short RSW), its effect is to be the smart dedusting of raw coke oven gas; Dewater unit is as the moisture that removes in the piped gas.China has a considerable amount of coal gas of converter OG system to exist to some extent: high dust emission, coal gas discharging dust content surpasses 100mg/ mark m
3High equipment operation energy consumption, system's running resistance surpasses 20kPa; Low ton steel coal-gas recovering, average ton steel coal-gas recovering amount is only at 50 mark m
3About.
The converter gas dry method purifier that with LT is representative mainly is made up of devaporizer, electrostatic precipitator and gas cooler etc.Though and coal gas of converter LT purification recovery system obviously is better than OG on gas purification and system energy consumption, but because of the LT method needs from external imported technology, invest higher, more and the reasons such as equipment tackling key problem and operating experience of electrostatic precipitator fault, influenced and popularized, only there is block converter more than 10 in the whole nation at present, and the whole world has the coal gas of block converter more than 50 to adopt the dry cleaning recovery system.
Summary of the invention
Task of the present utility model provides a kind of improved converter coal gas wet-type cloth bag purification retracting device, it has solved the existing dust emission of wet method of the prior art and equipment operation energy consumption height, ton steel coal-gas recovering is low, and problems such as height, electrostatic precipitator fault are many need be introduced technology, be invested to dry method.
The technical solution of the utility model is as follows:
A kind of converter coal gas wet-type cloth bag purification retracting device, it comprises evaporated flue, devaporizer or saturated spray column, the wet-type cloth bag deduster, the coal gas water seal, valve diffuses chimney and automaton, be connected by the dry seal flexible connecting device between described devaporizer or saturated spray column and the evaporated flue, replace the water-stop jockey; Be connected by pipeline between described devaporizer or saturated spray column and the wet-type cloth bag deduster; The back of described wet-type cloth bag deduster connects gas piping, Venturi meter, gas fan, valve, three-way switch valve is installed on gas piping, is diffused chimney and water seal valve.
The advantage of converter coal gas wet-type cloth bag purification retracting device of the present utility model is, gas purification efficient height, and device running resistance and energy consumption are low, and coal-gas recovering amount height, pipeline are difficult for stopping up.Coal gas discharging dust content after the purification is marked m at 10mg/
3Below, the device running resistance is below 10kPa, and converter ton steel coal-gas recovering amount is at 90 mark m
3More than.
Wet-type cloth bag purification retracting device of the present utility model meets strict environmental protection requirement, has reached to reclaim the purpose of coal gas, and has realized that negative converter can make steel.This purification recovery device is both applicable to gas purification and recovery to newly-built converter project, also applicable to the technological transformation to existing coal gas of converter OG or LT system.
Description of drawings
Accompanying drawing is the structural representation of a kind of converter coal gas wet-type cloth bag purification retracting device of the present utility model.
Number in the figure 1 is converter, and 2 is gasification cooling flue, and 3 is the dry seal flexible connecting device, 4 is devaporizer or spray column, and 5 is the wet type pulsed jet cloth filter, and 6 is Venturi meter, 7 is gas fan, and 8 is silencer, and 9 is by-passing valve, 10 is three-way switch valve, and 11 are the water seal non-return valve, and 12 is the V-type water-sealed valve, 13 for diffusing chimney, and 14 for sending to gas chamber, and 15 is nitrogen or steam, 16 is shower water, and 17 is gas piping.
The specific embodiment
Referring to accompanying drawing, the utility model is a kind of converter coal gas wet-type cloth bag purification retracting device, it comprises devaporizer or saturated spray column 4, wet type pulsed jet cloth filter 5, the coal gas water seal, Venturi meter 6, gas fan 7, valve and three-way switch valve 10 diffuse chimney 13 and automaton.
Be connected by dry seal flexible connecting device 3 between devaporizer or saturated spray column 4 and the gasification cooling flue 2, replaced the water-stop jockey of prior art.
The utility model is a literary composition with sizing or the manual path transfer overflow Venturi tube that devaporizer or saturated spray column 4 have replaced in the wet cleaning device; The automatic path transfer Venturi tube that has replaced in the wet cleaning device with wet-type cloth bag deduster 5 is that two literary compositions or circumferential weld washer are RSW, or the electrostatic precipitator in the dry cleaning device.Be connected by pipeline between devaporizer or saturated spray column 4 and the wet-type cloth bag deduster 5.
The back of wet-type cloth bag deduster 5 connects gas piping 17, Venturi meter 6, gas fan 7, valve and three-way switch valve 10 is installed on gas piping 17, is diffused chimney 13 and water seal valve.The valve of being installed on gas piping 17 has with diffusing the by-passing valve 9 that chimney 13 connects.The water seal valve of being installed on gas piping 17 has water seal non-return valve 11 and V-type water-sealed valve 12.
In order to save power consumption, fluid-flywheel clutch set up by air-introduced machine or variable-frequency motor carries out speed governing, in non-blowing process reduction of speed running.Silencer 8 is equipped with in the gas fan outlet of being adorned on the gas piping, can control noise less than 85dB.
Devaporizer 4 mainly is made up of apparatus body, spray gun, water supply and five parts such as air supply system and control system.Select water, nitrogen or steam two-phase flow automatic nozzle for use, to obtain stable fine water-spray particle.According to coal gas of converter temperature and tolerance fluctuation, by in device, spraying into an amount of air water mist particle, make water smoke in device, be vaporized into water vapour and enter gas phase, utilize the latent heat of vaporization of water that flue-gas temperature is reduced to design temperature in moment, simultaneously the water seal ash bucket is removed and fallen into to most crude particle dust in the flue gas.
Wet type pulsed jet cloth filter 5 mainly partly is made up of deduster housing, wet type filter bag, pulse jet mechanism, water seal ash bucket automatic sewage discharging device, spray and rinse-system and control system etc.Filter bag is to be made by the overlay film of permeable watertight or class coating material, the surface attachment water membrane, and when dust-laden coal gas was passed in the export-oriented bag by bag, dust was trapped in outer surface by filter bag and is passed through by purified gas.Along with thickening of filter bag outer surface dust layer, the deduster running resistance rises, and prescribes a time limit when resistance reaches going up of setting value, and control system starting impulse nitrogen-blow mechanism carries out automatic ash removing, and the water seal ash bucket is stripped from and is fallen into to dirt mud.
Purification recovery device of the present utility model also has following characteristics: converter mouth elementary errors pressure-controlled is controlled automatically by speed-changing draught fan; Adopt the lower blower fan of power to replace the high wet method blower fan of power; Dehydrator in the cancellation wet method system, or the gas cooler in the dry method system.
The workflow of converter coal gas wet-type cloth bag purification retracting device of the present utility model is as follows:
The high temperature dust coal gas of the blowing period generation of metallurgical steel mill converter in steelmaking process is reduced to 800 ℃～1000 ℃ by the evaporated flue cooling system with gas temperature, enters this gas purification retracting device then.When high temperature dust coal gas enters devaporizer or saturated spray column by the dry seal flexible connecting device, coal gas and water smoke carry out heat and mass, flue dust and water smoke clash into and condense simultaneously, most crude particle dust is removed and falls into the water seal ash bucket, this moment, gas temperature was reduced to rapidly about 75 ℃.Then, enter the wet-type cloth bag deduster through the coal gas after cooling and the thick dedusting by pipeline, after the cloth bag spray equipment was further sprayed water cooling processing, saturated coal gas entered the filter bag layer and purifies.Coal gas after the purification, its dust content is marked m less than 10mg/
3, the signals such as gas composition according to gas analyzer is measured are switched by three-way switch valve, reclaim respectively or diffuse, and it is not high because of carbon monoxide content in the flue gas to bessemerize initial stage and latter stage, by entering atmosphere after the chimney burning.When payoff period, coal gas is sent into gas chamber through water seal valve such as water seal non-return valve, V-type water-sealed valve and gas main.
Purification recovery device of the present utility model has automatic flushing and dirt eliminating function, can regularly wash automatically the dirt mud that is deposited in the coal gas dust removal pipeline; To be deposited in coal gas water seal and each equipment water seal ash bucket mud and sewage, enter factory's open channel or blowdown main to the Treatment of Sludge station by each water seal automatic sewage discharging device and rinse-system.
Purification recovery device of the present utility model is applicable to gas purification and recovery to newly-built converter project, also applicable to the overall technique transformation to existing coal gas of converter OG system.Mainly take following measures: with the literary composition in devaporizer or the saturated spray column replacement OG system, evaporated flue adopts the dry seal flexible connecting device to replace the water-stop jockey with being connected of devaporizer or saturated spray column, with two literary compositions or the RSW in the wet-type cloth bag deduster replacement OG system, change the lower blower fan apparatus of power, and the dehydrator in the cancellation OG system and the control requirement of the system of modification etc.When being used for the segmentation transformation, the major measure of taking is: two literary compositions or RSW with in the wet-type cloth bag deduster replacement OG system, change the lower blower fan of power, and the control requirement of the dehydrator in the cancellation OG system and the system of modification etc.
Purification recovery device of the present utility model is also applicable to the technological transformation to existing coal gas of converter LT system.Mainly take following measures: with the electrostatic precipitator in the wet-type cloth bag deduster replacement LT system, gas cooler in the cancellation LT system, the control of modification system requires and checks whether blower fan apparatus needs to change or ventilating fan only, sets up plumbing and sludge treating system etc.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the utility model, and be not with opposing qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claim conversion, the modification of the foregoing description.
Claims (5)
1. converter coal gas wet-type cloth bag purification retracting device, it comprises evaporated flue, devaporizer or saturated spray column, the wet-type cloth bag deduster, coal gas water seal, valve, diffuse chimney and automaton, it is characterized in that, be connected by the dry seal flexible connecting device between described devaporizer or saturated spray column and the evaporated flue, replace the water-stop jockey; Be connected by pipeline between described devaporizer or saturated spray column and the wet-type cloth bag deduster; The back of described wet-type cloth bag deduster connects gas piping, Venturi meter, gas fan, valve, three-way switch valve is installed on gas piping, is diffused chimney and water seal valve.
2. converter coal gas wet-type cloth bag purification retracting device according to claim 1 is characterized in that, the valve of being installed on the described gas piping has with diffusing the by-passing valve that chimney connects.
3. converter coal gas wet-type cloth bag purification retracting device according to claim 1 is characterized in that the water seal valve of being installed on the described gas piping has the water seal non-return valve.
4. converter coal gas wet-type cloth bag purification retracting device according to claim 1 is characterized in that the water seal valve of being installed on the described gas piping has the V-type water-sealed valve.
5. converter coal gas wet-type cloth bag purification retracting device according to claim 1 is characterized in that, silencer is equipped with in the gas fan outlet of being adorned on the described gas piping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200687029U CN201023017Y (en) | 2007-04-06 | 2007-04-06 | Converter gas wet type cloth bag purifying and recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200687029U CN201023017Y (en) | 2007-04-06 | 2007-04-06 | Converter gas wet type cloth bag purifying and recovering device |
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| Publication Number | Publication Date |
|---|---|
| CN201023017Y true CN201023017Y (en) | 2008-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200687029U Expired - Fee Related CN201023017Y (en) | 2007-04-06 | 2007-04-06 | Converter gas wet type cloth bag purifying and recovering device |
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| CN (1) | CN201023017Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619376B (en) * | 2009-07-31 | 2011-01-12 | 清华大学 | System for recovering converter gas sensible heat |
| CN102183155A (en) * | 2011-03-25 | 2011-09-14 | 宝钢工程技术集团有限公司 | Smoke high-temperature dust removal and steam and coal gas recovery system and method for calcium carbide furnace |
| CN110833736A (en) * | 2019-11-26 | 2020-02-25 | 江西晶昊盐化有限公司 | Parallel pretreatment type two-stage wet dust removal method and application thereof |
-
2007
- 2007-04-06 CN CNU2007200687029U patent/CN201023017Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619376B (en) * | 2009-07-31 | 2011-01-12 | 清华大学 | System for recovering converter gas sensible heat |
| CN102183155A (en) * | 2011-03-25 | 2011-09-14 | 宝钢工程技术集团有限公司 | Smoke high-temperature dust removal and steam and coal gas recovery system and method for calcium carbide furnace |
| CN110833736A (en) * | 2019-11-26 | 2020-02-25 | 江西晶昊盐化有限公司 | Parallel pretreatment type two-stage wet dust removal method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BAOSTEEL ENGINEERING + TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BAOGANG ENGINEERING TECHN CO., LTD., SHANGHAI Effective date: 20100720 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100720 Address after: 201900 Shanghai city Baoshan District Tieli Road No. 2510 Patentee after: Baosteel Engeneering &Technology Group Co., Ltd. Address before: 201900 Shanghai city Baoshan District Tieli Road No. 2510 Patentee before: Shanghai Baogang Engineering Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20130406 |