CN103182232B - The processing method of micro-dust in a kind of calcium carbide stove exhaust - Google Patents
The processing method of micro-dust in a kind of calcium carbide stove exhaust Download PDFInfo
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- CN103182232B CN103182232B CN201310090873.1A CN201310090873A CN103182232B CN 103182232 B CN103182232 B CN 103182232B CN 201310090873 A CN201310090873 A CN 201310090873A CN 103182232 B CN103182232 B CN 103182232B
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Abstract
The present invention relates to the processing method of micro-dust in a kind of calcium carbide stove exhaust, comprise the compressor, surge tank, wet scrubber, gas-liquid separator and the filter that are connected successively, constituted the degree of depth dust pelletizing system in calcium carbide stove exhaust purification process by above equipment; The calcium carbide stove exhaust containing dust after compressor adherence pressure enters wet scrubber dedusting after surge tank, go out the calcium carbide stove exhaust gas-liquid mixture of wet scrubber through gas-liquid separator separates dust-laden water droplet, be filtered the tiny dust-laden drop that removing is not separated again, then the calcium carbide stove exhaust after dedusting sent degree of depth dust pelletizing system.Solve in calcium carbide stove exhaust containing little, the tough dust of a large amount of grain graininess; easy blocking pipe and equipment; temperature is wayward; there is the problems such as potential safety hazard; have that equipment is few, technology is feasible, the advantage of safety and stability, the object of calcium carbide stove exhaust dedusting, energy-saving and emission-reduction, protection of the environment can be reached.Can be widely used in tails dedusting treatment technology.
Description
Technical field
The present invention relates to tails dedusting technical field, be specially adapted in the processing method of micro-dust in calcium carbide furnace gas.
Background technology
Calcium carbide is highly energy-consuming, maximum discharge industry.During calcium carbide is produced, calcium carbide furnace gas is greatest contamination source.Data show, nearly 400 of current national calcium carbide manufacturing enterprise, add up to annual production more than 1,500 ten thousand tons.Waste gas about 8,000,000 tons (carbon dioxide), 600,000 tons, the dust of annual furnace of calcium carbide discharge, cause very big pollution to environment; Especially calcium carbide furnace gas main component is carbon monoxide (75% ~ 90%), all point " sky lamp " in vain, is equivalent to waste 2,400,000 tons of standard coals every year, discharges about 1,200 ten thousand tons of CO simultaneously
2.
Due to the existence of the impurity such as sulphur, phosphorus, cyanogen, tar and a large amount of flue dust in calcium carbide furnace gas, have impact on the utilization of calcium carbide furnace gas.Owing to not having desirable calcium carbide furnace gas Recovery Purifying technology, a lot of producer of China can only burn furnace gas air defense, and enter air after the burning that applies a torch, both severe contamination atmospheric environment, caused again the significant wastage of CO resource.Therefore recycle calcium carbide stove exhaust economize energy, protection of the environment, energy-saving and emission-reduction tool are of great significance.
First the comprehensive utilization carrying out calcium carbide furnace gas is the purifying problem that will solve calcium carbide furnace gas, and the purification of current calcium carbide furnace gas and utilization still belong to international technical barrier.Realize the difficult problem that calcium carbide furnace gas comprehensive utilization needs to solve: one of them is exactly the dedusting of furnace gas.Because furnace gas temperature is high, contained dust granules degree is equivalent to flue dust level, and containing tar, this brings difficulty to flue gas cleaning; Owing to containing a large amount of tar ingredients in tail gas in prior art, dust viscosity is large, easy blocking pipe and equipment, exhaust temperature is wayward, containing the CO gas of 85% in tail gas, it belongs to flammable explosive gas, all there is potential safety hazard to equipment and personnel, and the inside and outside dry cleaning method Processes and apparatus adopted in native land all cannot normally use.Therefore the calcium carbide furnace gas dedusting technology that economical rationality, technology are feasible is researched and developed, extremely urgent.
Summary of the invention
The invention reside in and solve in current calcium carbide stove exhaust comprehensive utilization process owing to containing little, the tough dust of a large amount of grain graininess in calcium carbide stove exhaust, easy blocking pipe and equipment, temperature is wayward, there is the problems such as potential safety hazard, so provide a kind of efficiency of dust collection high, pollute little, technology is feasible, the processing method of micro-dust in the calcium carbide stove exhaust of safety and stability.
The technical solution used in the present invention is: the processing method of micro-dust in a kind of calcium carbide stove exhaust of the present invention, comprise the compressor, surge tank, wet scrubber, gas-liquid separator and the filter that are connected successively, constituted the degree of depth dust pelletizing system in calcium carbide stove exhaust purification process by above equipment; The calcium carbide stove exhaust containing dust after compressor adherence pressure enters wet scrubber dedusting after surge tank, go out the calcium carbide stove exhaust gas-liquid mixture of wet scrubber through gas-liquid separator separates dust-laden water droplet, be filtered the tiny dust-laden drop that removing is not separated again, then the calcium carbide stove exhaust after dedusting sent degree of depth dust pelletizing system.
The processing method of micro-dust in described calcium carbide stove exhaust, wet scrubber is Venturi scrubber, in the trunnion of Venturi scrubber, atomized water mixed at high speed, making contact that calcium carbide stove exhaust and Venturi scrubber shower nozzle spray, and make that the dust in calcium carbide stove exhaust is wetting enters liquid phase, go out the calcium carbide stove exhaust gas-liquid mixture of Venturi scrubber through gas-liquid separator separates dust-laden water droplet, after being filtered the not separated tiny dust-laden drop of removing again, gas after dedusting is sent degree of depth dust pelletizing system.
The processing method of micro-dust in described calcium carbide stove exhaust, Venturi scrubber can be two or more, and necking down size is determined by actual production capacity, and two or more Venturi scrubber can share a filter.
The processing method of micro-dust in described calcium carbide stove exhaust, filter is coke filter.
The processing method of micro-dust in described calcium carbide stove exhaust, filter is zeolite molecular sieve filter.
The processing method of micro-dust in described calcium carbide stove exhaust, the Stress control of degree of depth dust pelletizing system is at 0.6Mpa-8.0 Mpa, adjustment pressure is carried out by the water yield entering Venturi scrubber, regulative mode can be the mode of variable frequency adjustment or other adjustable pressures, specifically determines according to needs of production.
The processing method of micro-dust in described calcium carbide stove exhaust, after the process of degree of depth dust pelletizing system, gas dust content is to 8mg/m
3below.
The processing method of micro-dust in described calcium carbide stove exhaust, the calcium carbide stove exhaust after Venturi scrubber process has to pass through metre filter or carries out drying to calcium carbide stove exhaust.
Principle of the present invention: containing the gas of micro-dust under large discharge condition, the kinetic transformation in Venturi scrubber is utilized to be the static energy stage, make dust-laden particle and water enlarge active surface, make dust thoroughly enter interior water and appearance water, and be converted at static energy the process that kinetic energy utilizes centrifugal force to be separated by the dust settling containing inside and outside water in cyclone hydraulic separators.Gas volume is compressed, thus reduces dust kinetic energy, improve dust content in unit volume simultaneously, increasing contact probability when mixing with water, simultaneously due to the reduction of dust kinetic energy, making unit water droplet can catch more dust, again through gas-liquid separation, reach the object of micro-dust separation.
Beneficial effect of the present invention: the present invention is by compressing calcium carbide stove exhaust through compressor, Venturi scrubber is entered again after surge tank, atomized water mixed at high speed, making contact that in the rear pipe of Venturi scrubber, calcium carbide stove exhaust and shower nozzle spray, and make that dust is wetting enters liquid phase, dust-laden water droplet is separated through gas-liquid separator by the calcium carbide stove exhaust gas-liquid mixture going out Venturi scrubber, after being filtered the not separated tiny dust-laden drop of removing again, gas transmitting system after processing, gas dust content can be reduced to 8 mg/m
3below.The invention solves in current calcium carbide stove exhaust comprehensive utilization process due to little containing a large amount of grain graininess in calcium carbide stove exhaust, tough dust, easy blocking pipe and equipment, temperature is wayward, there is the problems such as potential safety hazard, compared with prior art, the present invention effectively improves the effect of calcium carbide stove exhaust dust removal process, trace dust treatment effeciency is higher than normal wet efficiency of dust collection, being combined completely of dust and water is reached in Venturi scrubber, there is equipment few, pollute little, technology is feasible, the advantage of safety and stability, calcium carbide stove exhaust dedusting can be reached, energy-saving and emission-reduction, the object of protection of the environment.The present invention can be widely used in, in tails dedusting treatment technology, being specially adapted in the processing method of micro-dust in calcium carbide stove exhaust.
Accompanying drawing illustrates:
Fig. 1 is process chart of the present invention.
In Fig. 1: 1 be compressor, 2 be surge tank, 3 be gas-liquid separator, 4 be filter, 5 be Venturi scrubber, 6 for plunger displacement pump.
Detailed description of the invention:
With reference to accompanying drawing 1, the present embodiment comprises the compressor 1, surge tank 2, wet scrubber, gas-liquid separator 3 and the filter 4 that are connected successively, is constituted the degree of depth dust pelletizing system in calcium carbide stove exhaust purification process by above equipment; The calcium carbide stove exhaust containing dust after compressor adherence pressure enters wet scrubber dedusting after surge tank, fresh water (FW) enters wet scrubber after plunger displacement pump 6, go out the calcium carbide stove exhaust gas-liquid mixture of wet scrubber through gas-liquid separator separates dust-laden water droplet, be filtered the tiny dust-laden drop that removing is not separated again, then the calcium carbide stove exhaust after dedusting sent degree of depth dust pelletizing system.
Another embodiment difference is that wet scrubber is Venturi scrubber 5, in the trunnion of Venturi scrubber, atomized water mixed at high speed, making contact that calcium carbide stove exhaust and Venturi scrubber shower nozzle spray, and make that the dust in calcium carbide stove exhaust is wetting enters liquid phase, go out the calcium carbide stove exhaust gas-liquid mixture of Venturi scrubber through gas-liquid separator separates dust-laden water droplet, after being filtered the not separated tiny dust-laden drop of removing again, gas after dedusting is sent degree of depth dust pelletizing system.
Another embodiment difference is that Venturi scrubber is two, and necking down size is determined by actual production capacity, and two Venturi scrubbers share a filter.
Another embodiment difference is that Venturi scrubber is three, and necking down size is determined by actual production capacity, and three Venturi scrubbers share a filter.
Another embodiment difference is that filter is coke filter.
Another embodiment difference is that filter is zeolite molecular sieve filter.
Another embodiment difference is that the Stress control of degree of depth dust pelletizing system is at 0.6Mpa.
Another embodiment difference is that the Stress control of degree of depth dust pelletizing system is at 0.8Mpa.
Another embodiment difference is that the Stress control of degree of depth dust pelletizing system is at 4.2Mpa.
Another embodiment difference is that the Stress control of degree of depth dust pelletizing system is at 7.0Mpa.
Another embodiment difference is that the Stress control of degree of depth dust pelletizing system is at 8.0 Mpa.
Another embodiment difference is that gas dust content is to 8mg/m after the process of degree of depth dust pelletizing system
3.
Another embodiment difference is that gas dust content is to 6mg/m after the process of degree of depth dust pelletizing system
3.
Another embodiment difference is that gas dust content is to 2mg/m after the process of degree of depth dust pelletizing system
3.
Another embodiment difference is that gas dust content is to 0.5mg/m after the process of degree of depth dust pelletizing system
3.
Claims (3)
1. the processing method of micro-dust in a calcium carbide stove exhaust, it is characterized in that comprising the compressor, surge tank, wet scrubber, gas-liquid separator and the filter that are connected successively, constituted the degree of depth dust pelletizing system in calcium carbide stove exhaust purification process by above equipment; The calcium carbide stove exhaust containing dust after compressor adherence pressure enters wet scrubber dedusting after surge tank, go out the calcium carbide stove exhaust gas-liquid mixture of wet scrubber through gas-liquid separator separates dust-laden water droplet, be filtered the tiny dust-laden drop that removing is not separated again, then the calcium carbide stove exhaust after dedusting sent degree of depth dust pelletizing system; Described wet scrubber is Venturi scrubber; Venturi scrubber is two or is greater than two, and necking down size is determined by actual production capacity, and two or the Venturi scrubber that is greater than two can share a filter; The Stress control of degree of depth dust pelletizing system is at 0.6MPa-8.0MPa; After the process of degree of depth dust pelletizing system, gas dust content is to 8mg/m
3below.
2. the processing method of micro-dust in calcium carbide stove exhaust according to claim 1, is characterized in that: described filter is coke filter.
3. the processing method of micro-dust in calcium carbide stove exhaust according to claim 1, is characterized in that: described filter is zeolite molecular sieve filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310090873.1A CN103182232B (en) | 2013-03-21 | 2013-03-21 | The processing method of micro-dust in a kind of calcium carbide stove exhaust |
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| CN201310090873.1A CN103182232B (en) | 2013-03-21 | 2013-03-21 | The processing method of micro-dust in a kind of calcium carbide stove exhaust |
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| CN103182232A CN103182232A (en) | 2013-07-03 |
| CN103182232B true CN103182232B (en) | 2015-10-28 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104707410B (en) * | 2013-12-17 | 2016-09-28 | 张哲源 | A kind of plant effluent exhaust extractor |
| CN105060294A (en) * | 2015-07-20 | 2015-11-18 | 常州市好利莱光电科技有限公司 | Method for purifying and recovering CO in tail gas of calcium carbide furnace |
| CN107010627B (en) * | 2017-04-11 | 2020-12-25 | 北京柯林斯达科技发展有限公司 | Method for producing pellet calcium carbide raw material by recycling calcium carbide furnace gas fly ash, semi coke powder and quicklime powder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405644Y (en) * | 1999-12-18 | 2000-11-15 | 戴若 | Electric stone-ash collecting device |
| CN2601124Y (en) * | 2003-06-13 | 2004-01-28 | 安徽皖维高新材料股份有限公司 | Enclosed combustion gas purifying system of calcium carbide furnace |
| CN1701838A (en) * | 2005-04-01 | 2005-11-30 | 吴运明 | Technology for radically treating industrial coal flue dust contamination by waterlogging to remove dust and sulphur |
| CN101016484A (en) * | 2006-12-29 | 2007-08-15 | 中国天辰化学工程公司 | Method of purifying calcium carbide furnace gas |
| CN102580429A (en) * | 2012-02-24 | 2012-07-18 | 青海宜化化工有限责任公司 | Waste gas dust removal system for calcium carbide furnace |
-
2013
- 2013-03-21 CN CN201310090873.1A patent/CN103182232B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2405644Y (en) * | 1999-12-18 | 2000-11-15 | 戴若 | Electric stone-ash collecting device |
| CN2601124Y (en) * | 2003-06-13 | 2004-01-28 | 安徽皖维高新材料股份有限公司 | Enclosed combustion gas purifying system of calcium carbide furnace |
| CN1701838A (en) * | 2005-04-01 | 2005-11-30 | 吴运明 | Technology for radically treating industrial coal flue dust contamination by waterlogging to remove dust and sulphur |
| CN101016484A (en) * | 2006-12-29 | 2007-08-15 | 中国天辰化学工程公司 | Method of purifying calcium carbide furnace gas |
| CN102580429A (en) * | 2012-02-24 | 2012-07-18 | 青海宜化化工有限责任公司 | Waste gas dust removal system for calcium carbide furnace |
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