CN202074841U - Furnace gas purifying device for closed calcium carbide furnace - Google Patents
Furnace gas purifying device for closed calcium carbide furnace Download PDFInfo
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- CN202074841U CN202074841U CN2011201275272U CN201120127527U CN202074841U CN 202074841 U CN202074841 U CN 202074841U CN 2011201275272 U CN2011201275272 U CN 2011201275272U CN 201120127527 U CN201120127527 U CN 201120127527U CN 202074841 U CN202074841 U CN 202074841U
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- calcium carbide
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- furnace gas
- sack cleaner
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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
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Abstract
The utility model discloses a furnace gas purifying device for a closed calcium carbide furnace. The furnace gas purifying device comprises a water cooler, an air cooling cyclone and a bag type dust collector which are sequentially communicated. The furnace gas purifying device has a simple structure and is convenient to use, the water cooler and the air cooling cyclone are used for cooling and dust removing, and then the bag type dust collector is used for filtering and dust removing, the dust content of the purified furnace gas can reach the national emission standard of 50 mg/Nm3 for the industrial furnaces, and the furnace gas is pure and can be further comprehensively utilized.
Description
Technical field
The utility model relates to a kind of furnace gas evolution device, specifically is a kind of flue gas cleaning device of closed calcium carbide furnace.
Background technology
China's calcium carbide industry has 450 tame enterprises approximately, more than 600 furnace of calcium carbide arranged, annual production occupies first place in the world, there is inadequate natural endowment in domestic calcium carbide industry in scale, the type of furnace, layout, energy-saving and environmental protection, raw material is of poor quality, managerial skills are lower, energy consumption height, pollution simultaneously weighs, and what give prominence to aspect the calcium carbide production technology is exactly: it is not good that flue gas is recycled efficient on the one hand, and the purification techniques of furnace of calcium carbide flue gas is very backward on the other hand.The about 80-90%'s of domestic calcium carbide industry is to be the internal combustion type electric furnace; the wasting of resources is bigger; along with progress of science and technology and national attention to the energy; it is imperative that the internal combustion type stove changes the totally-enclosed furnace of calcium carbide into; the Eleventh Five-Year Plan period; the research and development that China's calcium carbide industry will strengthen environmental protection technology; strengthen the control of comprehensive energy; strengthen the research and development of energy utilization technology, the degree of minimizing environmental pollution; active adoption totally-enclosed furnace of calcium carbide is so adopt the internal combustion type furnace of calcium carbide to transform the domestic comparative maturity of technology of totally-enclosed furnace of calcium carbide as in a large number.The major technique of totally-enclosed furnace of calcium carbide and equipment are from external introduction, and generally larger, production efficiency is higher, but its gas cleaning and heat energy utilization are not obtained ripe and unified technology so far as yet.Even the flue gas dry cleaning technology through investigation totally-enclosed stove also is a difficult problem in developed country.Its difficulty be its fume high-temperature, dust carefully sticking light, carbon monoxide content is high, tar content is high and separate out easily, the variation of cigarette temperature waits factor greatly, and have certain danger.
The utility model content
The technical problems to be solved in the utility model provides a kind of flue gas cleaning device of closed calcium carbide furnace, solves the problem of present gas cleaning difficulty.
The technical solution of the utility model is:
A kind of flue gas cleaning device of closed calcium carbide furnace comprises the water cooler, air-cooled type cooling cyclone and the sack cleaner that are communicated with successively;
Described water cooler comprises urceolus, is provided with 40-50 root cooling tube in the urceolus, and the two ends of cooling tube are connected with the end cap of urceolus;
Described air-cooled type cooling cyclone comprises air-cooled multitube cooler and cyclone dust collectors;
Described sack cleaner is made up of the cloth envelop collector of 2-4 platform parallel connection.
Furnace gas pipeline between described water cooler and the air-cooled type cooling cyclone is provided with water-cooling jacket; Described air-cooled type cooling cyclone is communicated with sack cleaner by thick gas blower fan; Described sack cleaner is connected with booster fan with the pure qi (oxygen) blower fan.
The bottom of described water cooler, air-cooled type cooling cyclone and sack cleaner all is connected with ash-storing bin by the ash discharge pipeline.
The high temperature dust furnace gas that the furnace of calcium carbide top is extracted out is through pre-cooled, temperature is reduced to 350-400 ℃, be delivered to then in the water cooler described in the utility model, remove part crude particle dust in the furnace gas, furnace gas is cooled to and is lower than after 400 ℃, be delivered in the air-cooled type cooling cyclone through furnace gas pipeline and carry out two, three grades of coolings, big slightly dust is transported to ash-storing bin, slightly little dust is cooled to 220-260 ℃ with furnace gas, deliver in the cloth envelop collector of many parallel connections through thick gas blower fan, 260-300 ℃ of cloth bag in the filter and SLD energy heatproof are delivered to each user place or emptying through pure qi (oxygen) blower fan and booster fan again.
The utility model is simple in structure, and is easy to use, and by water cooler, the cooling of air-cooled type cooling cyclone, dedusting, by the sack cleaner dust removal by filtration, the furnace gas after the purification contains dust content can reach national Industrial Stoves less than 50mg/Nm then
3Discharge standard, furnace gas is pure, can further fully utilize.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
One, sees Fig. 1, a kind of flue gas cleaning device of closed calcium carbide furnace, comprise the water cooler, air-cooled type cooling cyclone and the sack cleaner that are communicated with successively, the bottom of water cooler, air-cooled type cooling cyclone and sack cleaner all is connected with ash-storing bin 12 by ash discharge pipeline 11; Water cooler comprises urceolus 1, is provided with 50 cooling tubes 2 in the urceolus 1, and the two ends of cooling tube 2 are connected with the end cap 3 of urceolus 1; The air-cooled type cooling cyclone comprises air-cooled multitube cooler 4 and cyclone dust collectors 5; Sack cleaner is made up of the cloth envelop collector 6 of 3 parallel connections; Furnace gas pipeline between water cooler and the air-cooled type cooling cyclone is provided with water-cooling jacket 7, and the air-cooled type cooling cyclone is communicated with sack cleaner by thick gas blower fan 8, and the rear of sack cleaner is connected with pure qi (oxygen) blower fan 9 and booster fan 10.
Two, the explanation of the capital equipment in the present embodiment:
1, one-level water cooler:
Comprise urceolus 1, be provided with 50 cooling tubes 2 in the urceolus 1, the two ends of cooling tube 2 are connected with the end cap 3 of urceolus 1, cooling tube 2 Nei Tongre flue gases, and the outer High-Pressure Water that feeds of pipe makes all manage the equal rate of temperature fall that has of outer walls; Its underpart is provided with expansion chamber, is beneficial to powder and discharges from ash-valve smoothly.Total consumption of cooling-water of water cooler: 50t/h, running resistance:＜1500Pa 〉;
2, two, three grades of air-cooled type cooling cyclones:
The air-cooled type cooling cyclone comprises air-cooled multitube cooler 4 and cyclone dust collectors 5, has distinguishing features such as volume is little, heat exchange area big, light weight.Its bottom is provided with expansion chamber, is beneficial to powder and discharges from ash-valve smoothly.Total cold blast rate: 10000-15000m
3/ h, running resistance:＜1500Pa 〉.
It adopts the frequency control blower fan, and chain with the gas outlet furnace gas temperature.When the furnace gas parameter changes, regulate cold flow automatically, control furnace gas export temperature is about 220 ℃.
3, sack cleaner:
At the flue gas feature of totally-enclosed furnace of calcium carbide, selected pressure-tight formula sack cleaner for use, and adopted advanced pulse dust cleaning mode, deduster is made an integral body, three groups in parallel, establish an ash bucket for every group, entire equipment is very compact, reaches 100% airtight, has reduced the link of leaking out.Than general bag dust collector scheme, no matter reliability, or discharging, running resistance, air-flow distribute all to have significantly and improve.
4. blind controller system:
Control system is mainly monitored following data:
1) one-level water cooler out temperature
2) two, force 3 wind cooler outlet temperature
3) system's furnace gas flow
4) system pressure loss
5) bag dust collector inlet outlet pressure differential;
6) oxygen content in the pure qi (oxygen), carbon monoxide content and hydrogen content
7) total system adopts PC control and supervision
5. auxiliary equipment:
For cleaning system is worked effectively, must in whole flow process, dispose three accessory systems, i.e. cooling water, compressed air and nitrogen system.
A, cooling water system total amount are about 50-60m
3/ h supplies with one-level water cooler, furnace gas pipeline, thick gas blower fan, pure qi (oxygen) blower fan and booster fan etc. play cooling effect in purification equipment respectively, and maximum pressure is 3.5kg/cm
2, test pressure is 4.6kg/cm
2
B., the thick tolerance of compressed air system is: 1.0Nm
3/ min, pressure is 6kg, is mainly used in to open or close Pneumatic butterfly valve, compressed air is supplied with following equipment and valve: thick stack pressure control valve, furnace gas pipeline pressure-control valve and filter pressure-control valve.
C, nitrogen are supplied with important measures as safeguard protection and sack cleaner deashing, use in sack cleaner operation and system shutdown maintenance and critical accident.
Three, the instructions for use of present embodiment smoke eliminator:
(1), because of containing a large amount of tar ingredients in the calcium carbide furnace gas, and tar is below 180-190 ℃ the time, will be condensed into liquid separates out with mix dust and becomes very sticking mixture to be bonded on conveyance conduit and the equipment, block system very easily, for this reason, furnace gas comes out to each conveying process of user from stove one, and furnace gas temperature must remain on more than 220 ℃, guarantees that tar is not separated out.
(2), because the cloth bag of blower fan, filter, whole system airtight, and furnace gas temperature is crossed high reason, influence the service life of blower fan, filter, more severe patient has destroyed the sealing of whole smoke eliminator, can cause the blast of smoke eliminator localized seepage, so each equipment heat resistance must meet the furnace gas delivery temperature, generally by 280 ℃ of designs, in order to leave certain nargin, the furnace gas temperature upper limit can be controlled at 260 ℃.
(3), for guarantee furnace gas when the air-cooled type cooling cyclone comes out between 220-260 ℃, conveyance conduit and filter must be mixed electric heating cable and attemperator.
(4), because the calcium carbide burner gas dustiness is big, so pipeline, the filter ash discharging hole carried should have certain inclination angle to arrange, be convenient to the dust discharge, but otherwise dust block system.
(5), because furnace gas is poisonous, harmful, the flammable explosive gas based on CO, the sealing of smoke eliminator necessarily will be got well, and the duty of smoke eliminator is in pressure-fired, thick gas, pure qi (oxygen) two typhoon machines before and after the cloth envelop collector will guarantee that exactly filter is in barotropic state, in case negative pressure occurs, reliable automatic instrument device should be arranged, can regulate automatically, replenish N2 pressurising or parking.
(6), since the working of a furnace of furnace of calcium carbide in continuous variation, furnace gas temperature fluctuates, and when the furnace gas cooling system is installed, have certain adjusting allowance will think about the upper and lower bound of furnace gas temperature.
(7), the equipment of smoke eliminator such as blower fan, blower fan axle envelope, deduster should be considered the adverse circumstances of its high temperature dust should leave enough allowances during installation.
(8), the control of pressure, flow and the cooling and dedusting etc. of whole smoke eliminator, except that computer controlled automatic is arranged, also should consider the safety interlock system of system.
Claims (3)
1. the flue gas cleaning device of a closed calcium carbide furnace is characterized in that: comprise the water cooler, air-cooled type cooling cyclone and the sack cleaner that are communicated with successively;
Described water cooler comprises urceolus, is provided with 40-50 root cooling tube in the urceolus, and the two ends of cooling tube are connected with the end cap of urceolus;
Described air-cooled type cooling cyclone comprises air-cooled multitube cooler and cyclone dust collectors;
Described sack cleaner is made up of the cloth envelop collector of 2-4 platform parallel connection.
2. the flue gas cleaning device of a kind of closed calcium carbide furnace according to claim 1, it is characterized in that: the furnace gas pipeline between described water cooler and the air-cooled type cooling cyclone is provided with water-cooling jacket; Described air-cooled type cooling cyclone is communicated with sack cleaner by thick gas blower fan; Described sack cleaner is connected with booster fan with the pure qi (oxygen) blower fan.
3. the flue gas cleaning device of a kind of closed calcium carbide furnace according to claim 1, it is characterized in that: the bottom of described water cooler, air-cooled type cooling cyclone and sack cleaner all is connected with ash-storing bin by the ash discharge pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201275272U CN202074841U (en) | 2011-04-26 | 2011-04-26 | Furnace gas purifying device for closed calcium carbide furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201275272U CN202074841U (en) | 2011-04-26 | 2011-04-26 | Furnace gas purifying device for closed calcium carbide furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202074841U true CN202074841U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201275272U Expired - Fee Related CN202074841U (en) | 2011-04-26 | 2011-04-26 | Furnace gas purifying device for closed calcium carbide furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641637A (en) * | 2012-04-10 | 2012-08-22 | 安徽省元琛环保科技有限公司 | Dust removal system with novel bypass device |
| CN103372360A (en) * | 2013-08-02 | 2013-10-30 | 合肥合意环保科技工程有限公司 | Automatic temperature control dry method for purification and recycling of enclosed calcium carbide furnace tail gas and device for the method |
| CN104006668A (en) * | 2014-05-22 | 2014-08-27 | 江苏华德工业炉有限公司 | Recyclable smoke dust recycling and purifying device of industrial furnace |
| CN104108716A (en) * | 2014-05-19 | 2014-10-22 | 顾君尧 | Calcium carbide cooling molding device |
| CN104511223A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Calcium carbide furnace tail gas purification system |
| CN106225497A (en) * | 2016-09-22 | 2016-12-14 | 郑州旭飞光电科技有限公司 | Glass furnace smoke evacuation system |
-
2011
- 2011-04-26 CN CN2011201275272U patent/CN202074841U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641637A (en) * | 2012-04-10 | 2012-08-22 | 安徽省元琛环保科技有限公司 | Dust removal system with novel bypass device |
| CN102641637B (en) * | 2012-04-10 | 2014-03-26 | 安徽省元琛环保科技有限公司 | Dust removal system with bypass device, one for use and one for spare |
| CN103372360A (en) * | 2013-08-02 | 2013-10-30 | 合肥合意环保科技工程有限公司 | Automatic temperature control dry method for purification and recycling of enclosed calcium carbide furnace tail gas and device for the method |
| CN104511223A (en) * | 2013-09-30 | 2015-04-15 | 宁夏嘉翔自控技术有限公司 | Calcium carbide furnace tail gas purification system |
| CN104108716A (en) * | 2014-05-19 | 2014-10-22 | 顾君尧 | Calcium carbide cooling molding device |
| CN104006668A (en) * | 2014-05-22 | 2014-08-27 | 江苏华德工业炉有限公司 | Recyclable smoke dust recycling and purifying device of industrial furnace |
| CN104006668B (en) * | 2014-05-22 | 2015-12-09 | 江苏华德工业炉有限公司 | Industrial furnace recoverable version fume recovery purifier |
| CN106225497A (en) * | 2016-09-22 | 2016-12-14 | 郑州旭飞光电科技有限公司 | Glass furnace smoke evacuation system |
| CN106225497B (en) * | 2016-09-22 | 2018-08-17 | 郑州旭飞光电科技有限公司 | Glass furnace smoke evacuation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20160426 |