CN102580416A - Method for preventing filter bag of bag type collector from blockage - Google Patents
Method for preventing filter bag of bag type collector from blockage Download PDFInfo
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- CN102580416A CN102580416A CN201210073481XA CN201210073481A CN102580416A CN 102580416 A CN102580416 A CN 102580416A CN 201210073481X A CN201210073481X A CN 201210073481XA CN 201210073481 A CN201210073481 A CN 201210073481A CN 102580416 A CN102580416 A CN 102580416A
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- bag
- high temperature
- sack cleaner
- hot gas
- flue dust
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a method for preventing the filter bag of a bag type collector from blockage. In the method, high temperature waste hot gas in waste heat discharge pipe (2) of a galvanizing furnace (1) is transported to an aspiration channel (5) of a bag type dust collector (4) in an optimized air quantity and air speed through a high temperature resisting circular steel tube (3), high temperature waste hot gas is used for heating soot in the filtering bag of the bag type dust collector (4) to be under an optimized dew-point temperature, meanwhile, under the vibrating effect of a pulse vibration device, particles in the soot are prevented from dropping off from the outer wall of the filtering bag, and clean air is directly discharged out of the filtering bag. In the method, the 30 percent of rest energy of a galvanization furnace can be sufficiently used, heat waste is reduced, environment pollutions are reduced, the energy is saved, the emission is discharged, the filtering bag of the bag type dust collector is prevented from blockage, the service life is prolonged, the cost is saved, and the invention overcomes the defects of high energy consumption, complex control and operation, high cost and the like caused by that European manufacturers add electrical assisted heating in the bag type dust collector to reduce blockages of filtering bag of the bag type dust collector.
Description
Technical field
The invention belongs to the galvanizing by dipping technical field, be specifically related to the method that prevents in the galvanizing by dipping process that bag-type duster filtering bag from stopping up.
Background technology
Sack cleaner is an equipment of collecting galvanizing industry being used to of generally using the flue dust of zinc-plated generation, and filter bag stops up and is meant that the zinc cigarette is adsorbed on the filter bag outer wall, is difficult to come off; Cause the blower fan resistance big, generation is vibrated even can't be used, owing to the device structure reason; Be difficult to artificial the removing; Filter bag is only scrapped, and causes a large amount of wastes, and production cost is higher.It is very complicated that filter bag produces the reason of stopping up, and mainly is relevant with hot dip galvanizing process, geographical environment and weather conditions.Dedusting is to collect the flue dust that zinc-plated operation produces in the hot dip galvanizing process; In fact hot galvanizing process is exactly the process of steel matrix and zinc liquid generation alloying reaction; Because the effect of fluxing agent can produce volume of smoke, zinc-plated flue dust mainly is made up of zinc oxide fine particles, zinc ammonium chloride double salt particulate, zinc oxide fine particles, alchlor gas, other flue dust and steam in this process; These gases are bigger to the operating environment influence, and general galvanizing factory all can use cleaner.The cleaner kind is more, and the sack cleaner efficiency of dust collection is high, good air purification effect, but zinc-plated flue dust gets into deduster through the preceding suction inlet of pot, piles up at the filter bag surface filtration, results in blockage easily.
Zinc chloride ammonia double salt be workpiece to help plating be from fluxing agent, to bring, in galvanizing is produced,, spray ammonium chloride during zinc-plated pot and also can receive heat sublimation to produce the zinc chloride ammonia gas in order to improve the surface quality of plating piece, the cooling back forms particulate.Zinc chloride ammonia is deliquescence very easily, forms glue with other solid dusts, with filter bag fiber bonding, under inclement weather conditions; Even the formation muddy, filter bag is stopped up rapidly, pressure reduction increases to 3000Pa, and the blower fan resistance increases; Vibration is strong, can't dedusting, and service life is short.Some producers are employed in the method that increases electric assistant heating in the sack cleaner in Europe at present, though certain effect that filter bag stops up that prevents is arranged, have increased energy resource consumption, and complex equipments, control operation inconvenience, and cost is high.And galvanizing stove both domestic and external itself needs energy heating, manufactures and designs best galvanizing furnace efficiency of utilization and can reach 70%, but still has 30% heat energy directly to discharge, and causes energy waste and environmental pollution.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve the deficiency of prior art; Provide that a kind of technological design is reasonable, practical operation is convenient, high efficiency; Can make full use of the heat energy of galvanizing stove itself; Economic environmental protection, environmental pollution is little, can effectively reduce the method that bag-type duster filtering bag stops up.
Technical scheme: in order to realize above purpose, the technical scheme that the present invention takes is:
A kind of method that prevents that bag-type duster filtering bag from stopping up, it may further comprise the steps:
High temperature in the waste heat discharge pipe of galvanizing furnace expense hot gas is transported to the aspiration channel of sack cleaner through high temperature resistant round steel pipe; High temperature expense hot gas heats the flue dust in the bag-type duster filtering bag; Make the flue dust temperature that gets in the bag-type duster filtering bag meet or exceed the dew-point temperature of flue gas; Under the vibration effect of impulse oscillation device, the particle in the flue dust is come off from the filter bag outer wall simultaneously, clean gas is directly discharged filter bag;
The waste heat discharge pipe of above-described galvanizing furnace and the aspiration channel of sack cleaner are connected with high temperature resistant round steel pipe; Round steel pipe one end is positioned at the aspiration channel center of sack cleaner; The other end is inboard concordant with the waste heat discharge pipe; Round steel pipe becomes 30 degree angles with the aspiration channel of sack cleaner, and at the middle part of round steel pipe the butterfly valve that is used to control high temperature expense hot gas flow is installed.Round steel pipe becomes 30 degree angles with the aspiration channel of sack cleaner, can effectively control the intake and the flow velocity of high temperature expense hot gas.
As preferred version, the above-described method that prevents that bag-type duster filtering bag from stopping up, the temperature of the high temperature expense hot gas in the waste heat discharge pipe of described galvanizing furnace is 600 to 700 ℃.
As preferred version, the above-described method that prevents that bag-type duster filtering bag from stopping up, high temperature expense hot gas is heated to 40 to 70 ℃ to the flue dust in the bag-type duster filtering bag.The present invention is through the dew-point temperature of the flue dust in a large amount of measuring bag-type duster filtering bags, because the flue dust in the filter bag will bond with the filter bag fiber when being lower than dew-point temperature, under inclement weather conditions; Even formation muddy; Filter bag is stopped up rapidly, and the temperature of therefore controlling the flue dust in the bag-type duster filtering bag is even more important, and the present invention is through a large amount of 10 to 200 ℃ of flue dust heating-up temperatures of experiment screening; Testing result shows; When the flue dust in the bag-type duster filtering bag is heated to 40 to 70 ℃, can prevent effectively that the flue dust deliquescence is agglomerating, stop up filter bag.
As preferred version, the above-described method that prevents that bag-type duster filtering bag from stopping up was respectively 70 to 80 M3/ minutes 2000 to 2300 M3/ minutes through the flue dust of bag-type duster filtering bag and the air quantity of high temperature expense hot gas.The temperature that the present invention takes hot gas according to the temperature and the high temperature of the flue dust of bag-type duster filtering bag; Taking the air quantity mixed volume ratio of hot gas through a large amount of experiment screening flue dust and high temperature, is 200 to 3000 M3/ minutes through a large amount of experiment screening flue dust air quantity, and the component of high temperature expense hot gas is 5 to 100 M3/ minutes; Experimental result shows; When the air quantity of the flue dust of bag-type duster filtering bag and high temperature expense hot gas was respectively 2000 to 2300 M3/ minutes and 70 to 80 M3/ minutes, high temperature took hot gas and can the flue dust of heat transferred low temperature be heated the low temperature flue dust; Make the temperature of flue dust reach 40 to 70 ℃; Thereby can effectively prevent the flue dust deliquescence, prevent to stop up filter bag, prolong the service life of sack cleaner.And can be to the excessive heating of flue dust, wasted heat influences environment.The control of high temperature expense hot gas flow of the present invention is realized by the butterfly valve on the round steel pipe that connects waste heat discharge pipe and sack cleaner aspiration channel, and is easy to operate.
As preferred version, the above-described method that prevents that bag-type duster filtering bag from stopping up is 25 to 30 meters/minute through the flue dust of bag-type duster filtering bag and the flow velocity of high temperature expense hot gas.The present invention designs the flow velocity of flue dust and high temperature expense hot gas according to the generation speed of bag-type duster filtering bag flue dust; The flow velocity that takes hot gas through 2 to 100 meters/minute high temperature of a large amount of experiment screenings; Experimental result shows; When the flow velocity of flue dust and high temperature expense hot gas is 25 to 30 meters/minute, can timely the flue dust in the bag-type duster filtering bag be drained, flue dust can not occur and assemble.
Beneficial effect: the method that prevents that bag-type duster filtering bag from stopping up provided by the invention compared with prior art has the following advantages:
The method that prevents that bag-type duster filtering bag from stopping up of the present invention; According to the design feature of sack cleaner and galvanizing furnace waste heat discharge pipe, with the round steel pipe of band thermal current control valve the two is connected, and the dew-point temperature through a large amount of measuring bag-type duster filtering bag flue dust; And through a large amount of mixed air volume and flow velocitys that optimize flue dust and high temperature expense hot gas of testing; Thereby the heat that makes high temperature expense hot gas can evenly pass to the flue dust of low temperature, makes the temperature of flue dust in the sack cleaner be higher than the temperature of deliquescence, under the vibration effect of impulse oscillation device; Particle in the flue dust is come off from the filter bag outer wall; Clean gas is directly discharged filter bag, can reach to reduce environmental pollution and prolong the sack cleaner purpose in service life, and production cost is low.The method that prevents that bag-type duster filtering bag from stopping up provided by the invention; Can make full use of the dump energy of galvanizing furnace 30%, can not only reduce the waste of heat, reduce the pollution of environment; Energy-saving and emission-reduction; And can prevent the bag-type duster filtering bag obstruction, European producer be can overcome and the energy resource consumption height that the obstruction of the electric assistant heating minimizing of increase bag-type duster filtering bag is brought in the sack cleaner, shortcomings such as control operation complicacy and cost height are employed in.
Description of drawings
Fig. 1 is the structural representation that galvanizing furnace of the present invention is connected with sack cleaner.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Prevent the method that bag-type duster filtering bag stops up, it may further comprise the steps:
As shown in Figure 1; High temperature in the waste heat discharge pipe (2) of galvanizing furnace (1) expense hot gas is transported to the aspiration channel (5) of sack cleaner (4) through high temperature resistant round steel pipe (3); High temperature expense hot gas heats the flue dust in sack cleaner (4) filter bag, makes the flue dust temperature that gets in sack cleaner (4) filter bag meet or exceed the dew-point temperature of flue gas, and the while is under the vibration effect of impulse oscillation device; Particle in the flue dust is come off from the filter bag outer wall, and clean gas is directly discharged filter bag;
The waste heat discharge pipe (2) of above-described galvanizing furnace (1) and the aspiration channel (5) of sack cleaner (4) are connected with high temperature resistant round steel pipe (3); Round steel pipe (3) one ends are positioned at aspiration channel (5) center of sack cleaner (4); The other end is inboard concordant with waste heat discharge pipe (2); Round steel pipe (3) becomes 30 degree angles with the aspiration channel (5) of sack cleaner (4), and at the middle part of round steel pipe (3) butterfly valve (6) that is used to control high temperature expense hot gas flow is installed.
The above-described method that prevents that bag-type duster filtering bag from stopping up, the temperature of the high temperature expense hot gas in the waste heat discharge pipe (2) of described galvanizing furnace (1) is 600 to 700 ℃.
The above-described method that prevents that bag-type duster filtering bag from stopping up, high temperature expense hot gas is heated to 40 to 70 ℃ to the flue dust in sack cleaner (4) filter bag.
The above-described method that prevents that bag-type duster filtering bag from stopping up is 2000 to 2300 M3/ minutes through sack cleaner (4) filter bag flue dust air quantity, and the air quantity of high temperature expense hot gas is 70 to 80 M3/ minutes.
The above-described method that prevents that bag-type duster filtering bag from stopping up is 25 to 30 meters/minute through the flue dust of sack cleaner (4) filter bag and the flow velocity of high temperature expense hot gas.
Sack cleaner, filter area 2100M2, air quantity 2300M3/ minute, filter bag model Ф 153 * 5800; 760 of quantity use 3 months filter bags to stop up by prior art, and the filter bag surface becomes the sposh shape; The filter bag inside and outside differential pressure surpasses 3000Pa, and blower fan, aspiration channel vibration acutely can't be used.
Press the embodiment of the invention 1 described scheme implementation: sack cleaner, filter area 2100M2, air quantity 2300M3/ minute; Filter bag model Ф 153 * 5800,760 of quantity were normally used 2 years; Obstruction did not appear in filter bag of dust collector; The filter bag inside and outside differential pressure remains on about 1500 Pa, and the air draught dedusting is smooth and easy, uses good.
Embodiment 3
Sack cleaner, filtering surface 1600M2, air quantity 1900M3; Filter bag model Ф 153 * 5800,560 of filter bags, the initial stage uses 3 months filter bags to stop up. and the filter bag surface becomes the sposh shape; The filter bag inside and outside differential pressure surpasses 3200Pa, and blower fan, aspiration channel vibration acutely can't be used.
Press the embodiment of the invention 1 described scheme implementation: sack cleaner, filtering surface 1600M2, air quantity 1900M3/ minute; Filter bag model Ф 153 * 5800,560 of quantity were normally used 21 months; Filter bag of dust collector does not have caking; The filter bag inside and outside differential pressure remains on about 1200 Pa, and the air draught dedusting is smooth and easy, uses good.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (5)
1. prevent the method that bag-type duster filtering bag stops up, it is characterized in that it may further comprise the steps:
High temperature in the waste heat discharge pipe (2) of galvanizing furnace (1) expense hot gas is transported to the aspiration channel (5) of sack cleaner (4) through high temperature resistant round steel pipe (3); High temperature expense hot gas heats the flue dust in sack cleaner (4) filter bag; Make the flue dust temperature that gets in sack cleaner (4) filter bag meet or exceed the dew-point temperature of flue gas; Under the vibration effect of impulse oscillation device, the particle in the flue dust is come off from the filter bag outer wall simultaneously, clean gas is directly discharged filter bag;
The waste heat discharge pipe (2) of above-described galvanizing furnace (1) and the aspiration channel (5) of sack cleaner (4) are connected with high temperature resistant round steel pipe (3); Round steel pipe (3) one ends are positioned at aspiration channel (5) center of sack cleaner (4); The other end is inboard concordant with waste heat discharge pipe (2); Round steel pipe (3) becomes 30 degree angles with the aspiration channel (5) of sack cleaner (4), and at the middle part of round steel pipe (3) butterfly valve (6) that is used to control high temperature expense hot gas flow is installed.
2. the method that prevents that bag-type duster filtering bag from stopping up according to claim 1 is characterized in that, the temperature of the high temperature expense hot gas in the waste heat discharge pipe (2) of described galvanizing furnace (1) is 600 to 700 ℃.
3. the method that prevents that bag-type duster filtering bag from stopping up according to claim 1 is characterized in that, high temperature expense hot gas is heated to 40 to 70 ℃ to the flue dust in sack cleaner (4) filter bag.
4. the method that prevents that bag-type duster filtering bag from stopping up according to claim 1 is characterized in that, the flue dust air quantity through sack cleaner (4) filter bag is 2000 to 2300 M3/ minutes, and the air quantity of high temperature expense hot gas is 70 to 80 M3/ minutes.
5. the method that prevents that bag-type duster filtering bag from stopping up according to claim 1 is characterized in that, is 25 to 30 meters/minute through the flue dust of sack cleaner (4) filter bag and the flow velocity of high temperature expense hot gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210073481XA CN102580416A (en) | 2012-03-20 | 2012-03-20 | Method for preventing filter bag of bag type collector from blockage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210073481XA CN102580416A (en) | 2012-03-20 | 2012-03-20 | Method for preventing filter bag of bag type collector from blockage |
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| CN102580416A true CN102580416A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210073481XA Pending CN102580416A (en) | 2012-03-20 | 2012-03-20 | Method for preventing filter bag of bag type collector from blockage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104645741A (en) * | 2013-11-22 | 2015-05-27 | 河北建支铸造集团有限公司 | Quicklime-adding apparatus of bag-type dust remover |
| CN105854449A (en) * | 2016-05-17 | 2016-08-17 | 江汉大学 | High-temperature high-humidity flue gas bag type dust collection and ash removal method and device thereof |
| CN115581975A (en) * | 2022-12-08 | 2023-01-10 | 协鑫高科纳米新材料(徐州)有限公司 | Dust remover is retrieved with tiny particle to fumed silica production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035441A (en) * | 1988-03-03 | 1989-09-13 | 上海第三钢铁厂 | The dry purification process of flux galvanizing smog |
| CN1467406A (en) * | 2002-07-08 | 2004-01-14 | 无锡市东方环境工程设计研究所有限公 | Dew-resist low-resistance impulse dust remover |
| CN101780357A (en) * | 2010-03-05 | 2010-07-21 | 中冶焦耐(大连)工程技术有限公司 | Technique and device for dry dedusting of wet dust-laden gas |
| CN102371097A (en) * | 2011-10-20 | 2012-03-14 | 无锡市西漳环保设备有限公司 | Anti-dew-condensation heating dust removal device |
-
2012
- 2012-03-20 CN CN201210073481XA patent/CN102580416A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035441A (en) * | 1988-03-03 | 1989-09-13 | 上海第三钢铁厂 | The dry purification process of flux galvanizing smog |
| CN1467406A (en) * | 2002-07-08 | 2004-01-14 | 无锡市东方环境工程设计研究所有限公 | Dew-resist low-resistance impulse dust remover |
| CN101780357A (en) * | 2010-03-05 | 2010-07-21 | 中冶焦耐(大连)工程技术有限公司 | Technique and device for dry dedusting of wet dust-laden gas |
| CN102371097A (en) * | 2011-10-20 | 2012-03-14 | 无锡市西漳环保设备有限公司 | Anti-dew-condensation heating dust removal device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104645741A (en) * | 2013-11-22 | 2015-05-27 | 河北建支铸造集团有限公司 | Quicklime-adding apparatus of bag-type dust remover |
| CN105854449A (en) * | 2016-05-17 | 2016-08-17 | 江汉大学 | High-temperature high-humidity flue gas bag type dust collection and ash removal method and device thereof |
| CN115581975A (en) * | 2022-12-08 | 2023-01-10 | 协鑫高科纳米新材料(徐州)有限公司 | Dust remover is retrieved with tiny particle to fumed silica production |
| CN115581975B (en) * | 2022-12-08 | 2023-03-10 | 协鑫高科纳米新材料(徐州)有限公司 | Dust remover is retrieved with tiny particle to fumed silica production |
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Application publication date: 20120718 |