CN101441034A - Method and device for purifying enclosed calcium carbide furnace gas - Google Patents
Method and device for purifying enclosed calcium carbide furnace gas Download PDFInfo
- Publication number
- CN101441034A CN101441034A CNA2008101363083A CN200810136308A CN101441034A CN 101441034 A CN101441034 A CN 101441034A CN A2008101363083 A CNA2008101363083 A CN A2008101363083A CN 200810136308 A CN200810136308 A CN 200810136308A CN 101441034 A CN101441034 A CN 101441034A
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- furnace gas
- water
- cooled
- calcium carbide
- heat exchanger
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to furnace gas purification method for an airtight calcium carbide furnace and a purification device thereof, comprising a fabric filter and a coil tube type water-cooling heat exchanger communicated with the fabric filter, wherein an outlet end of the fabric filter is communicated with to a filter fan through pipeline. Furnace gas enters coil tube type water-cooling heat exchanger for carrying out water cooling through suction of the filter fan, dust in furnace gas is settled, and then the cooled and settled furnace gas enters the high temperature fabric filter for dedusting. The invention is provided with advantages of simple structure, clean fan and good furnace gas cleaning effect.
Description
Technical field
The present invention relates to a kind of flue gas cleaning device and purification method thereof, be specifically related to a kind of purification method and device of enclosed calcium carbide burner gas.
Background technology
The raw coke of calcium carbide production and lime produce calcium carbide under the effect of resistance arc heat, also produce a large amount of furnace gases simultaneously.Come out furnace gas temperature about 600 ~ 800 ℃ from furnace of calcium carbide, moment maximum temperature can reach 1000 ℃, calorific value content height.Can be used as the fuel of equipment such as raw material of wood-charcoal dry heat wind furnace, gas burning lime kiln, power plant, boiler.Make energy recovery utilize again, realize recycling economy, improve added value of product.
Calcium carbide furnace gas by volume percentage composition contains CO 70 ~ 90%, H
25 ~ 7%, O
20.2 ~ 0.6%, CO
22 ~ 5%, CH
40 ~ 5%, N
21 ~ 4%, tar 150 ~ 600mg/Nm
3, dirt 100 ~ 150g/Nm
3Has easily sticking, the easy characteristic such as stifled of high temperature, inflammable, explosive, dust.
1, in order to guarantee the stability of furnace gas source of the gas, need set up gas holder buffering, this inevitable requirement temperature can not be too high (general temperature≤50 ℃ be advisable).
2, when furnace gas temperature≤225 ℃, tar reaches freezing point and separates out in the furnace gas, causes sticking burnt, the caliber of pipeline to diminish gradually, influence the furnace gas conveying.
3, if select the fuel of furnace gas, calcium carbide furnace gas is required to have good stability as gas burning kiln, and its Dust Capacity≤50mg/Nm
3
And the method for flue gas cleaning at present mainly is to make passage form malleation by blower fan, enter sack cleaner again after furnace gas is blown into cooler and lowers the temperature, because pressure is not enough, simultaneously also need be in the blower fan supercharging of the other end of sack cleaner, blower fan can be for a long time for the high environment work down of dust content like this, can cause blower fan to damage, can operate as normal, the regularly dust on the removing blower fan in order to guarantee blower fan.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, designed and developed out a kind of simple in structure, blower fan cleaning, enclosed calcium carbide furnace gas method and purifier that flue gas cleaning is effective.
The present invention is achieved by the following technical solutions:
The enclosed calcium carbide furnace gas system comprises the cooler that is provided with after the furnace gas import, and is positioned at behind the cooler and the sack cleaner that is connected with cooler, and the output of described sack cleaner is by pipeline connection pure qi (oxygen) blower fan.
The enclosed calcium carbide furnace gas system, described cooler is a water cooling heat exchanger.
The enclosed calcium carbide furnace gas system, described water cooling heat exchanger is the coiled water cooling heat exchanger.
The enclosed calcium carbide furnace gas system is provided with a water-cooled settler between described water cooling heat exchanger and the furnace gas import.
The enclosed calcium carbide furnace gas system, described water cooling heat exchanger or water-cooled settler or water cooling heat exchanger and water-cooled settler are connected with frequency-variable controller.
The purification method of enclosed calcium carbide furnace gas system, include furnace gas by cooler cooling and enter the sack cleaner dedusting, the swabbing action of furnace gas by the pure qi (oxygen) blower fan at first enters water-cooled heat exchange cooler and carries out water-cooled cooling, and the dust in the furnace gas is carried out sedimentation handle, again the furnace gas behind the cooling-sedimentation is entered the high temperature cloth bag dust collector and carry out dedusting.
It is preceding through the cooling of water-cooled settler, sedimentation that a kind of enclosed calcium carbide furnace gas method, described furnace gas enter water-cooled heat exchange cooler.
A kind of enclosed calcium carbide furnace gas method, described water-cooled settler or water-cooled heat exchange cooler are by the more predefined temperature control of frequency-variable controller chilling temperature.
The present invention passes through pipeline connection pure qi (oxygen) blower fan by the output at sack cleaner.So just make the flue gas cleaning passage form negative pressure, after the pure qi (oxygen) blower fan is positioned at sack cleaner, make the pure qi (oxygen) blower fan for the work down of cleaning work condition environment.The fault rate of blower fan reduces greatly, and system is stable.Need not to clean often blower fan.Because the pressure of negative pressure is bigger, whole system only needs a typhoon machine to get final product, and system architecture is simple, and manufacturing cost reduces.Water-cooled settler and water-cooled heat exchange cooler not only can be lowered the temperature to high-temperature furnace gas, can also carry out sedimentation to dust-laden gas simultaneously, have played the pretreated function of dedusting.With frequency-variable controller control water-cooled settler and water-cooled heat exchange cooler, can realize VFC, both the temperature of setting was as required lowered the temperature, can damage follow-up cleaner because if furnace gas temperature is too high, if furnace gas temperature is low excessively, have tar and produce, can stick with paste bag.
Description of drawings
Accompanying drawing is the system architecture schematic diagram.
The specific embodiment
Shown in accompanying drawing.
Embodiment 1
The enclosed calcium carbide furnace gas system comprises before sack cleaner 5 and the sack cleaner 5 and the coiled water cooling heat exchanger 4 that is connected with sack cleaner 5, and the output of sack cleaner 5 is by pipeline connection pure qi (oxygen) blower fan 6.The swabbing action of furnace gas 1 by pure qi (oxygen) blower fan 6 enters coiled water cooling heat exchanger 4 and carries out water-cooled cooling, and the dust in the furnace gas carried out sedimentation handle, and the furnace gas behind the cooling-sedimentation entered high temperature cloth bag dust collector 5 again and carries out dedusting.
Embodiment 2
The enclosed calcium carbide furnace gas system, comprise before sack cleaner 5 and the sack cleaner 5 and the coiled water cooling heat exchanger 4 that is connected with sack cleaner 5, be communicated with a water-cooled settler 3 before the coiled water cooling heat exchanger 4, coiled water cooling heat exchanger 4 or water-cooled settler 3 are connected with frequency-variable controller 2.The output of sack cleaner 5 is by pipeline connection pure qi (oxygen) blower fan 6.The swabbing action of furnace gas 1 by pure qi (oxygen) blower fan 6 enters water-cooled settler 3 and carries out water-cooled cooling, and the dust in the furnace gas carried out the dedusting preliminary treatment, furnace gas after the cooling sedimentation is entered coiled water cooling heat exchanger 4 carry out water-cooled cooling, and the dust in the furnace gas is carried out sedimentation handle, again the furnace gas behind the cooling-sedimentation is entered high temperature cloth bag dust collector 5 and carry out dedusting.With frequency-variable controller 2 control water-cooled settler 3 and coiled water cooling heat exchangers 4, the temperature that makes water-cooled settler 3 and coiled water cooling heat exchanger 4 set is as required lowered the temperature, can damage follow-up cleaner because if furnace gas temperature is too high, if furnace gas temperature is low excessively, have tar and produce, can stick with paste bag.
Claims (8)
1, enclosed calcium carbide furnace gas system comprises the cooler that is provided with after the furnace gas import, and is positioned at behind the cooler and the sack cleaner that is connected with cooler, and the output that it is characterized in that described sack cleaner is by pipeline connection pure qi (oxygen) blower fan.
2, enclosed calcium carbide furnace gas according to claim 1 system is characterized in that described cooler is a water cooling heat exchanger.
3, enclosed calcium carbide furnace gas according to claim 2 system is characterized in that described water cooling heat exchanger is the coiled water cooling heat exchanger.
4, enclosed calcium carbide furnace gas according to claim 3 system is characterized in that being provided with between described water cooling heat exchanger and the furnace gas import water-cooled settler.
5, according to claim 3 or 4 described enclosed calcium carbide furnace gas systems, it is characterized in that described water cooling heat exchanger or water-cooled settler or water cooling heat exchanger and water-cooled settler are connected with frequency-variable controller.
6, the purification method of enclosed calcium carbide furnace gas according to claim 1 system, include furnace gas by cooler cooling and enter the sack cleaner dedusting, it is characterized in that the swabbing action of furnace gas by the pure qi (oxygen) blower fan at first enters water-cooled heat exchange cooler and carry out water-cooled cooling, and the dust in the furnace gas is carried out sedimentation handle, again the furnace gas behind the cooling-sedimentation is entered the high temperature cloth bag dust collector and carry out dedusting.
7, a kind of enclosed calcium carbide furnace gas method according to claim 6, it is preceding through the cooling of water-cooled settler, sedimentation to it is characterized in that described furnace gas enters water-cooled heat exchange cooler.
8, according to according to claim 6 or 7 described a kind of enclosed calcium carbide furnace gas methods, it is characterized in that described water-cooled settler or water-cooled heat exchange cooler are by the more predefined temperature control of frequency-variable controller chilling temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101363083A CN101441034A (en) | 2008-12-01 | 2008-12-01 | Method and device for purifying enclosed calcium carbide furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101363083A CN101441034A (en) | 2008-12-01 | 2008-12-01 | Method and device for purifying enclosed calcium carbide furnace gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101441034A true CN101441034A (en) | 2009-05-27 |
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ID=40725574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101363083A Pending CN101441034A (en) | 2008-12-01 | 2008-12-01 | Method and device for purifying enclosed calcium carbide furnace gas |
Country Status (1)
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| CN (1) | CN101441034A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382689A (en) * | 2011-08-09 | 2012-03-21 | 中国天辰工程有限公司 | Positive-pressure dry dust removing and purifying method for calcium carbide furnace gas |
| CN105536374A (en) * | 2016-01-29 | 2016-05-04 | 青岛青力环保设备有限公司 | Cupola tail gas treatment system |
| CN108180763A (en) * | 2018-01-11 | 2018-06-19 | 重庆岩昱节能科技有限公司 | A kind of calcium carbide device for recycling heat and application method |
| CN113654363A (en) * | 2021-08-09 | 2021-11-16 | 泰州市振华电炉有限公司 | Waste gas treatment device for metallurgical electric furnace |
-
2008
- 2008-12-01 CN CNA2008101363083A patent/CN101441034A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382689A (en) * | 2011-08-09 | 2012-03-21 | 中国天辰工程有限公司 | Positive-pressure dry dust removing and purifying method for calcium carbide furnace gas |
| CN102382689B (en) * | 2011-08-09 | 2013-12-11 | 中国天辰工程有限公司 | Positive-pressure dry dust removing and purifying method for calcium carbide furnace gas |
| CN105536374A (en) * | 2016-01-29 | 2016-05-04 | 青岛青力环保设备有限公司 | Cupola tail gas treatment system |
| CN108180763A (en) * | 2018-01-11 | 2018-06-19 | 重庆岩昱节能科技有限公司 | A kind of calcium carbide device for recycling heat and application method |
| CN108180763B (en) * | 2018-01-11 | 2019-05-24 | 重庆岩昱节能科技有限公司 | A kind of calcium carbide device for recycling heat and application method |
| CN113654363A (en) * | 2021-08-09 | 2021-11-16 | 泰州市振华电炉有限公司 | Waste gas treatment device for metallurgical electric furnace |
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| PB01 | Publication | ||
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Application publication date: 20090527 |