CN2770757Y - Blast furnace gas low-pressure pulse bag type dust collector - Google Patents
Blast furnace gas low-pressure pulse bag type dust collector Download PDFInfo
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- CN2770757Y CN2770757Y CN 200420118845 CN200420118845U CN2770757Y CN 2770757 Y CN2770757 Y CN 2770757Y CN 200420118845 CN200420118845 CN 200420118845 CN 200420118845 U CN200420118845 U CN 200420118845U CN 2770757 Y CN2770757 Y CN 2770757Y
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- dust collector
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Abstract
The utility model relates to a low-pressure pulse cloth-bag type dust collector for blast furnace gas, which is especially suitable for gas dry dust removal of a large blast furnace. The utility model comprises a spraying device and a filter bag. The utility model is characterized in that two spraying devices which are formed by pulse valves (2) and air separating bags (3) are arranged on a casing body (1) of the pulse cloth bag type dust collector so as to synchronously and oppositely blow, the length of the filter bag is from 8 m to 10 m, and a spraying pipe (5) is connected with both sides of the pulse valves (2). The utility model improves the pulsed spraying capability of the dust collector through the improvement of the device, and changes the standard filter bag with the length of 6 m into the over-long filter bag with the length of 8 m to 10 m so as to causes the dust collector to reduce land occupation and investment. The utility model is similarly suitable for all fume purifying occasions of the low-pressure pulse cloth-bag type dust collector, has universality and similarly has the effect of reduction of land occupation and investment.
Description
Technical field
The utility model relates to the used low pressure pulse bag filter of steel and iron industry blast furnace gas dry dusting, equally also is applicable to the low pressure pulse bag filter transformation in other each production field.
Technical background
The coal gas dry-method dedusting technology is applied day by day in the blast furnace ironmaking production, and promotional value is particularly more arranged in large blast furnace production.Because that it has is energy-conservation, water saving, environmental protection, good purification, simplify working process, series of advantages such as investment and producing cost are low.
That the coal gas sack cleaner has is high temperature resistant, high pressure, anti-flaming, explosion-proof, gas defence characteristics, therefore invests higherly, is the highest class of cost in all sack cleaners.Occupation of land is many in addition, makes blast furnace always scheme to arrange and acquires a certain degree of difficulty.
How arranging compactness, reduce and take up an area of, reduce investment, is the problem that this technology answers emphasis to consider.So the filter bag that how to extend, make sack cleaner to spatial development, reduce the casing number, should be the main direction of current research.Certainly, prerequisite is that the deduster efficiency of dust collection is constant, and the blowback effect is constant.
Usually action of low-voltage pulse cloth bag length is 6 meters, because the filter bag lengthening, same diameter casing has more big filter area.Changing 130 * 8 meters filter bags of Φ with 130 * 6 meters of Φ is example, long 2 meters of filter bag, and every case filter area increases by 1/3.If deduster has designed 12 casings, when adopting 8 meters long bags, area is constant, and as long as casing is 9, and it is about 20% to save investment, is worth millions of units.Because casing is few, also reduced near land used valuable blast furnace, make horizontal layout more compact, reasonable.
In like manner, with 10 meters long filter bags, the casing number can be still less, and benefit is better.Improvement expenses comprises that increasing by a cover divides gas bag and pulse valve, filter bag and 4 meters of casing lengthenings, coal gas to import and export caliber and valve increasing etc., and inexpensive, comprehensive benefit is better.
Be not limited to coal gas, if can use long filter bag instead same benefit arranged all for all large-scale pulsed jet cloth filters.Present environmental protection dedusting exhaust gas volumn is 50～1,000,000 m easily
3/ h invests up to ten million units, for reducing investment and taking up an area of effect same is arranged all.
Summary of the invention
The purpose of this utility model is to improve existing equipment, and a kind of blast furnace gas low pressure pulse bag filter of overlength filter bag is provided.Improving content is that filter bag is lengthened to 8-10 rice, even longer, has further developed this technology.
The utility model relates to the blast furnace gas low pressure pulse bag filter, comprise blowing device, filter bag, it is characterized in that: the blowing device of two cover pulse valves being installed on the pulsed jet cloth filter housing and being divided gas bag to form, carry out synchronously to blowing, filter bag length is lengthened to 8～10 meters from 6 meters, even longer, the winding-up pipe links to each other with the both sides pulse valve.
Facts have proved that long bag is feasible under the dedusting of blast furnace gas condition; Experimental determination shows, does not do the ability that the existing pulse dust collector of any change has 8 meters filter bags of blowback.Will be better if do some improvement effects.
Such as considering to improve jetting pressure.The action of low-voltage pulse jetting pressure should be higher than the 0.15MPa～0.2MPa of purification medium gas pressure.Suitably improve jetting pressure and can guarantee the long bag of blowback ability, exceeding 0.3MPa～0.4MPa effect such as pressure will be better, as long as pulse valve can bear.
Such as adopting the high-performance pulse valve.The pulse valve blowback time of using is 60～80 milliseconds at present, if after adopting novel 50～60 milliseconds of pulse valves, explosive force is stronger, will effectively improve the blowback ability.
Can also use the dipulse valve instead to blowing technology.Common pulse valve winding-up one row's filter bag, the utility model have adopted two pulse valves to close to blow row's filter bag to increase the winding-up dynamics, therefore can use 10 meters or longer filter bag.Two pulse valves are given electricity simultaneously, and the winding-up dynamics has been strengthened in winding-up synchronously.Also do corresponding improvement on the structure, as establish two covers and divide gas bag and pulse valve; Winding-up pipe two ends all are communicated with pulse valve; Accomplish detachably, and two interface all has the sealing of " O " shape sealing ring; Winding-up pipe spout is also selected different apertures etc. for use according to the high velocity air characteristics.
The filter bag lengthening can be divided into two and go on foot.The first step at first realizes 8 meters filter bags.Do not change or improve jetting pressure, improve pulse valve and can realize by above-mentioned not making; If adopt bivalve to add above improvement to blowing, filter bag can use the long bag of 8-10 rice specification, even longer.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is an equipment schematic diagram of the present utility model.
Fig. 2 is Figure 1A-A profile
3. fens gas bag 4. filter bags of 1. pulsed jet cloth filter housings, 2. pulse valves and skeleton 5. winding-up pipes among the figure
The specific embodiment
1 originally have only a cover pulse valve 2 and divide gas bag 3 on the pulsed jet cloth filter housing in Fig. 1, Fig. 2, the utility model increases by a cover pulse valve and divides gas bag, and every row's filter bag changes 2 and guarantee synchronous winding-up into by a pulse valve, strengthens the blowback dynamics.Filter bag length can be lengthened to 10 meters by 6～8 meters, even longer.Winding-up pipe 5 changes two ends into and connects, and detachable, injection diameter also redesigns.
The utility model is from improving jetting pressure, the novel pulse valve of improvement and exploiting potentialities and set about and 6 meters long filter bags can be lengthened to 8 meters; Adopt bivalve to blowing apparatus again, then can further improve filter bag length, realized to the spatial development purpose.
The utility model not only has realistic meaning to blast furnace gas dry dusting, adopts the large-scale gas cleaning engineering of pulsed jet cloth filter to be of universal significance equally to other, and actual is how to transform existing bag pulse dedusting, make it the problem that is more suitable for maximizing.
Claims (1)
1. a blast furnace gas low pressure pulse bag filter comprises blowing device, filter bag, it is characterized in that: the blowing device that two cover pulse valves (2) is installed on pulsed jet cloth filter housing (1) and divides gas bag (3) to form, carry out synchronously to blowing; Described filter bag (4) length is 8～10 meters, and winding-up pipe (5) links to each other with both sides pulse valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118845 CN2770757Y (en) | 2004-12-28 | 2004-12-28 | Blast furnace gas low-pressure pulse bag type dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420118845 CN2770757Y (en) | 2004-12-28 | 2004-12-28 | Blast furnace gas low-pressure pulse bag type dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2770757Y true CN2770757Y (en) | 2006-04-12 |
Family
ID=36704543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420118845 Expired - Lifetime CN2770757Y (en) | 2004-12-28 | 2004-12-28 | Blast furnace gas low-pressure pulse bag type dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2770757Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985078A (en) * | 2010-12-14 | 2011-03-16 | 江苏新中环保股份有限公司 | Blowing system of flat bag-type dust collector |
| CN105498932A (en) * | 2016-02-03 | 2016-04-20 | 江苏新业重工股份有限公司 | Horizontal slag roller milling system |
-
2004
- 2004-12-28 CN CN 200420118845 patent/CN2770757Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985078A (en) * | 2010-12-14 | 2011-03-16 | 江苏新中环保股份有限公司 | Blowing system of flat bag-type dust collector |
| CN105498932A (en) * | 2016-02-03 | 2016-04-20 | 江苏新业重工股份有限公司 | Horizontal slag roller milling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141228 Granted publication date: 20060412 |