CN1219583C - High temperature fume dust removal, desulfurization device and its control technology - Google Patents
High temperature fume dust removal, desulfurization device and its control technology Download PDFInfo
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- CN1219583C CN1219583C CN 03157043 CN03157043A CN1219583C CN 1219583 C CN1219583 C CN 1219583C CN 03157043 CN03157043 CN 03157043 CN 03157043 A CN03157043 A CN 03157043A CN 1219583 C CN1219583 C CN 1219583C
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- flue gas
- sulphur
- filter course
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Abstract
The present invention relates to a device for removing dust and sulphur in high-temperature flue gas and a control technology thereof, which belongs to the technical fields of industrial ecology and environmental protection projects. The device for removing the dust and the sulphur is composed of valves 1, 2, 3 and 4, a U-shaped pressure meter 5, a powder dust collector 6, a powder dust automatic measurer 7, a distributor 8, a heat-bulb anemoscope 9, a blower 10, a dust remover 11 and a filter layer 12; the device for removing the dust and the sulphur is characterized in that the filter layer in the dust remover is composed of quartz sand and a sulphur removing agent as an auxiliary agent, and high-temperature flue gas can directly enter the dust remover for removing the dust and the sulphur without cooling the flue gas; thereby, the dust remover has the double functions of removing the dust and the sulphur simultaneously, the flue gas with the high temperature of 800 to 1000 DEG C can be treated, the sensible heat of the flue gas can be fully recycled, the dust removal efficiency can be over 99%, and the sulfur content in the flue gas can achieve the state standard of flue gas discharge.
Description
Technical field:
This technology belongs to industrial ecology and environment-friendly engineering technical field, is suitable for the high temperature dust gas sweetening and the dedusting of industries such as chemical industry, oil, metallurgy, electric power, is specially adapted to the dedusting of (up to nearly thousand degree) high-temperature flue gas more than 250 ℃ in the metallurgical industry.
Background technology:
Dust collection method at present both at home and abroad commonly used has two kinds of wet method and dry method dusts, and mainly there is following problem in they:
The sensible heat (high-temperature flue gas contains a large amount of available energy) of flue gas has been wasted in wet dedusting, and will be with a large amount of coolings and water for dust removal in dust removal process, thus large amount of sewage produced, increased back step water treatment operation, both cause secondary pollution, wasted the energy again.
Dry method dust mainly contains modes such as gravitational precipitator, cyclone dust collectors, sack cleaner and electrostatic precipitator.Using more in industry is sack cleaner, but because of it needs spray cooling before handling, not only causes obvious heat of smoke to lose, and also can be difficult to cleaning and stops using because of collecting grey pulping.Therefore the textile filtering medium that bag-type dust adopts generally can only need cooling to handle before high-temperature flue gas enters cloth bag 80 ℃～200 ℃ operate as normal, this has not only increased dedusting operation and construction investment, and has wasted sensible heats a large amount of in the flue gas.In industries such as chemical industry, oil, metallurgy, electric power, often produce high temperature dust gas, especially in metallurgical industry, flue-gas temperature is (high reach nearly thousand degree) more than 250 ℃, and contains a large amount of dust.Under hot conditions, it is big that the dusty gas viscous force becomes, and humidity also descends significantly, and the phenomenon of fine grained cohesion greatly reduces, so have more highly difficult to the separation of particle.And influence the normal operation of cleaner.
Birmingham, GBR university chemical industry is to propose a kind of high-temperature dust removal method of using refractory ceramics as filter the later stage nineties, better dust removal effect, accumulated in ceramic porous medium inside but exist except that dust, worsened gas permeability, influence the blowback effect and increase gas-flow resistance.
Summary of the invention:
The present invention seeks to develop a kind of deduster that filters high temperature dust gas, by the chemical property of stratum granulosum flue gas is carried out desulfurization and reclaims high temperature waste hot simultaneously, reach the effect of achieving many things at one stroke.
A kind of high temperature fume dust removal, desulfurizer and control technology, dedusting, desulfurizer is by valve 1,2,3,4, U-shaped pressure gauge 5, dust collection 6, dust automatic measuring instrument 7, distributing device 8, hot-bulb anemobiagraph 9, blower fan 10, deduster 11, filter course 12 is formed, it is characterized in that the present invention selects quartz sand and be aided with the Ca fimily desulfurizing agent to serve as filter course as filter medium, the filter course grain diameter is 0.6～2.5mm, thickness of bed layer is 50～120mm, the rate of filtration is 0.1～0.5m/s, cycle 15～the 30min of blowback, be 1.7～2.2mm wherein with the filter course grain diameter, thickness of bed layer is 80～100mm, the rate of filtration is that the parameter of 0.2～0.3m/s selects desulfuration efficiency the highest, and the cycle 20min of blowback is advisable.Specific implementation process (Fig. 1): just blow: valve-off 2,3, open valve 1,4, start blower fan 10, flue dust is blown in the fluid bed from valve 1, obtain filtering and desulfurization by filter course, dust is stayed in the filter course, and filtered smoke gas is discharged through valve 4, measures the dust content of outlet flue gas with automatic flue dust isokinetic sampling instrument 9.Blowback: valve-off 1,4, open valve 2,3, with blower fan 10 blowbacks, the grit of staying in the filtering layer is blown to nearly fluidized state, collect in the dust collection 6 at valve 2 places.When gathering a certain amount of dust in the filtering layer and need change, start distributing device 8 and change filter material layer again.
This apparatus features is:
The efficiency of dust collection height can reach more than 99%;
Can handle 800～1000 ℃ of high-temperature smokes, the sensible heat of flue gas is recycled fully;
Have dedusting and desulfidation (desulfurization can reach qualified discharge) simultaneously;
Equipment is anti-corrosion, and is wear-resisting, durable, with low cost;
The control system mature and reliable.
The present invention can be used for the desulfurization and the dedusting of industry high temperature dust gases more than 250 ℃ such as chemical industry, oil, metallurgy, electric power, is specially adapted to the desulfurization and the dedusting of nearly 1000 ℃ of high-temperature flue gas in the metallurgical industry.
Experiment showed, that this device combination property is superior, efficiency of dust collection is specially adapted to the capture of particle diameter greater than 10 μ m dust more than 99%.
Description of drawings:
Fig. 1 is high-temperature dust removal, desulfurizer schematic diagram.
Fig. 2 is efficiency of dust collection and a thickness of filter bed graph of a relation under 1.7～2.2mm for the filter course grain diameter.
Efficiency of dust collection and the rate of filtration graph of a relation when Fig. 3 is 82mm for thickness of bed layer.
Fig. 4 is the relation of the different thickness of filter bed rates of filtration and efficiency of dust collection.
Fig. 5 is the rate of filtration and an efficiency of dust collection relation under the different-grain diameter.
The specific embodiment:
1, a kind of high temperature fume dust removal, desulphurization system device and control technology, dedusting, desulphurization system device are made up of valve 1,2,3,4, U-shaped pressure gauge 5, dust collection 6, dust automatic measuring instrument 7, distributing device 8, hot-bulb anemobiagraph 9, blower fan 10, deduster 11, filter course 12, select quartz sand and be aided with the Ca fimily desulfurizing agent to serve as filter course as filter medium, the filter course grain diameter is 0.6～2.5mm, thickness of bed layer is 50mm, the rate of filtration is 0.1m/s, the cycle 15min of blowback.
2, a kind of high temperature fume dust removal, desulphurization system device and control technology, dedusting, desulphurization system device are made up of valve 1,2,3,4, U-shaped pressure gauge 5, dust collection 6, dust automatic measuring instrument 7, distributing device 8, hot-bulb anemobiagraph 9, blower fan 10, deduster 11, filter course 12, select quartz sand and be aided with the Ca fimily desulfurizing agent to serve as filter course as filter medium, the filter course grain diameter is 1.7～2.2mm, thickness of bed layer is 90mm, the rate of filtration is 0.25m/s, the cycle 20min of blowback.
3, a kind of high temperature fume dust removal, desulphurization system device and control technology, dedusting, desulphurization system device are made up of valve 1,2,3,4, U-shaped pressure gauge 5, dust collection 6, dust automatic measuring instrument 7, distributing device 8, hot-bulb anemobiagraph 9, blower fan 10, deduster 11, filter course 12, select quartz sand and be aided with the Ca fimily desulfurizing agent to serve as filter course as filter medium, the filter course grain diameter is 1.7～2.2mm, thickness of bed layer is 120mm, the rate of filtration is 0.5m/s, the cycle 30min of blowback.
Specific implementation process (Fig. 1): just blow: valve-off 2,3, open valve 1,4, start blower fan 10, flue dust is blown in the fluid bed from valve 1, obtain filtering and desulfurization by filter course, dust is stayed in the filter course, and filtered smoke gas is discharged through valve 4, measures the dust content of outlet flue gas with automatic flue dust isokinetic sampling instrument 9.Blowback: valve-off 1,4, open valve 2,3, with blower fan 10 blowbacks, the grit of staying in the filtering layer is blown to nearly fluidized state, collect in the dust collection 6 at valve 2 places.When gathering a certain amount of dust in the filtering layer and need change, start distributing device 8 and change filter material layer again.
Claims (2)
1, the control method of a kind of flue gas ash removal and desulfurizer, dust-removing desulfurating apparatus is by valve (1), (2), (3), (4), U-shaped pressure gauge (5), dust collection (6), dust automatic measuring instrument (7), distributing device (8), hot-bulb anemobiagraph (9), blower fan (10), deduster (11) and filter course (12) are formed, it is characterized in that selecting quartz sand and be aided with the Ca fimily desulfurizing agent serving as filter course as filter medium, the filter course grain diameter is 0.6～2.5mm, the filter course thickness of bed layer is 50～120mm, the rate of filtration is 0.1～0.5m/s, and the cycle of blowback is 15～30min.
2, the control method of a kind of according to claim 1 flue gas ash removal and desulfurizer is characterized in that the filter course grain diameter is 1.7～2.2mm, and the filter course thickness of bed layer is 80～100mm, and the rate of filtration is 0.2～0.3m/s, and the cycle of blowback is 20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03157043 CN1219583C (en) | 2003-09-12 | 2003-09-12 | High temperature fume dust removal, desulfurization device and its control technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03157043 CN1219583C (en) | 2003-09-12 | 2003-09-12 | High temperature fume dust removal, desulfurization device and its control technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1522790A CN1522790A (en) | 2004-08-25 |
| CN1219583C true CN1219583C (en) | 2005-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03157043 Expired - Fee Related CN1219583C (en) | 2003-09-12 | 2003-09-12 | High temperature fume dust removal, desulfurization device and its control technology |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305550C (en) * | 2004-11-22 | 2007-03-21 | 宁波大学 | Granular bed gas purifying device and its method |
| CN1321724C (en) * | 2005-07-13 | 2007-06-20 | 杭州理想科技有限公司 | Super-thin spray cyclone double-way double-cycle dust-removing desulfurating apparatus |
| CN100364641C (en) * | 2006-01-05 | 2008-01-30 | 宁波大学 | Granular gas purifier |
| CN100493679C (en) * | 2007-06-07 | 2009-06-03 | 中电投远达环保工程有限公司 | Method of controlling fume speed inside desulfurizing absorption tower |
| CN114618297B (en) * | 2022-04-15 | 2023-11-17 | 深圳凯盛科技工程有限公司 | Manufacturing method, device and system of flue gas treatment device |
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2003
- 2003-09-12 CN CN 03157043 patent/CN1219583C/en not_active Expired - Fee Related
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| CN1522790A (en) | 2004-08-25 |
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Granted publication date: 20050921 |