CN101890341B - Carbon-doped fiber filter cloth for removing mercury in coal-fired flue gas and preparation method thereof - Google Patents
Carbon-doped fiber filter cloth for removing mercury in coal-fired flue gas and preparation method thereof Download PDFInfo
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- CN101890341B CN101890341B CN 201010241604 CN201010241604A CN101890341B CN 101890341 B CN101890341 B CN 101890341B CN 201010241604 CN201010241604 CN 201010241604 CN 201010241604 A CN201010241604 A CN 201010241604A CN 101890341 B CN101890341 B CN 101890341B
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Abstract
The invention discloses a carbon-doped fiber filter cloth for removing mercury in a coal-fired flue gas and a preparation method thereof. The carbon-doped fiber filter cloth comprises the components of PPS fiber and active carbon powder in a weight ratio of 1 to 1, wherein the active carbon powder is adhered to the surface of the fiber in a fusion mode to form uniform adsorption active sites to heavy metal mercury in the filter cloth. The preparation method is conducted on an opening and cleaning system, a carding system, a needling system, a drying system, a spraying system, a thermoforming system and an active carbon powder spraying system. The carbon-doped fiber filter cloth has high temperature resistance and high strength, and particularly has a comparatively significant effect in adsorbing and removing the heavy metal mercury in the coal-fired flue gas; besides, the preparation method is simple and feasible, has a low cost and is easy for large-scale industrial production.
Description
Technical field
The invention belongs to the heavy metal mercury in coal-fired flue gas field that removes, particularly a kind of be used to removing carbon-doped fiber filter cloth of Mercury In Coal Combustion Flue Gas and preparation method thereof.
Background technology
Mercury is a kind of low melting point, high-volatile liquid metal, even 0 ℃ it also can volatilize; In case sucked by human body, just can cause nerve to poison and the deep tissue pathology, and mercury toxicity have accumulation, often needed several years or just to some extent discovery of more than ten years, very big to human health damage.And China is the big country of production of energy and consumption, and coal fire discharged thing is the main source of China's atmosphere pollution, and the trace element mercury in the coal can move in the burning of coal process, has approximately 86% mercury to be distributed in the flue gas.Therefore, the atmosphere pollution that brings and environmental loss are suitable serious, administer and the researchers that pollute control have brought huge burden to atmosphere.At present slightly fruitful improvement method is the method that sprays into adsorbent in the flue gas after burning, but the method exist certain defective (adsorbent with low cost, the removal efficiency right such as flying dust is lower; The adsorbent that removal efficiency is higher, higher again such as the active carbon price, input cost is larger, and the coal-burning power plant is difficult to accept, it is difficult to promote).
The NACF carbon content is high, specific area is large, micropore is abundant, pore-size distribution is high, compare with traditional granular or powdered active carbon: the NACF carbon content is high, external surface area is large, pore-size distribution is narrow, and adsorption capacity is large, be approximately the 1.5-10 of traditional granular or powdered active carbon doubly, and adsorption efficiency is high, trace materials absorption to the ppb level is effective especially, and adsorption desorption speed is fast, and the traditional granular or powdered active carbon 10-100 that is approximately doubly, heavy metal Hg in the coal-fired flue-gas there is preferably adsorbing and removing effect, but NACF is more crisp, and fiber is shorter, is difficult to spin, so can't make the higher cloth bag of intensity, fail to be applied in the bag dust abatement field.
Summary of the invention
Technical problem to be solved by this invention provides a kind of be used to removing carbon-doped fiber filter cloth of Mercury In Coal Combustion Flue Gas and preparation method thereof, this carbon-doped fiber filter cloth can be high temperature resistant, intensity is high, especially the absorption of heavy metal mercury in coal-fired flue gas is deviate to have comparatively significant effect, and the preparation method is simple, cost is lower, is easy to large-scale industrial production.
A kind of carbon-doped fiber filter cloth be used to removing Mercury In Coal Combustion Flue Gas of the present invention, its component comprises: weight ratio is 1: 1 PPS fiber and activated carbon powder, active carbon powder sticks on the fiber surface in the mode that merges, in the uniform adsorption activity position to heavy metal Hg of the inner formation of filter cloth.
The particle diameter of described activated carbon powder is nanoscale, and phosphorus content is higher than 80%.
The preparation method of a kind of carbon-doped fiber filter cloth be used to removing Mercury In Coal Combustion Flue Gas of the present invention comprises:
(1) with the shredding in the opening or cleaning system of PPS fiber, then by the activated carbon powder spraying system nano level active powdered carbon is ejected on the good PPS fiber of shredding;
(2) melt the PPS fiber mixing combing that has activated carbon powder and make fleece prepared, again spray into activated carbon powder, make PPS carbon-doped fiber nonwoven by the mechanical adhesion needle point method;
(3) respectively viscose and activated carbon powder are sprayed onto nonwoven surface by spraying colloid system and activated carbon powder spraying system, finally by folded net and thermal finalization system and cut and batch, make carbon-doped fiber filter cloth.
Activated carbon powder spraying system in the described step (1) needs three covers, and nozzle arranges enclosed hood.
Should be in described technical process, to not reclaimed by the activated carbon powder of fiber institute adhesive tape, in order to reuse.
This kind is to utilize the ultrafine nanometer aerosol particle under the effect that has momentum gradient to exist for the carbon-doped fiber filter cloth that removes heavy metal mercury in coal-fired flue gas, can and stick to principle on the solid to the little side of momentum motion, by the active carbon spraying system nano level active powdered carbon is sprayed on the PPS fiber.The preparation process of this kind filter cloth is at opening or cleaning system, combing system, acupuncture system, drying system, spraying colloid system, finish on thermal finalization system and the activated carbon powder spraying system, not tackled it by the activated carbon powder of fiber institute adhesive tape and reclaim in the preparation process is in order to reuse.
Beneficial effect
(1) the present invention is by PPS fiber adhesive tape active carbon powder, thereby increased fiber itself to the absorption of heavy metal in flue gas mercury line position alive, improved the removal efficiency to heavy metal Hg, this carbon-doped fiber filter cloth can be high temperature resistant, intensity is high, can use it for the field that removes pellet and heavy metal Hg in the coal-fired flue-gas;
(2) activated carbon powder has good electric conductivity and to the suction-operated of acidic and alkaline gas high-quality, is greatly improved so that PPS mixes the service life of charcoal cloth bag;
(3) preparation method's simple possible of the present invention, cost is lower, is easy to large-scale industrial production.
Description of drawings
Fig. 1 is the structural representation of carbon-doped fiber filter cloth;
Fig. 2 is the producing principle figure of carbon-doped fiber filter cloth;
Fig. 3 is the production process charts of carbon-doped fiber filter cloth;
Among the figure, 1 melts the PPS fiber that has activated carbon powder, 2 plocoid active carbon powders, 3 carbon-doped fiber filter cloths.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
With the shredding in the opening or cleaning system of PPS fiber, then by the activated carbon powder spraying system nano level active powdered carbon is ejected on the good PPS fiber of shredding, melt the PPS fiber mixing combing that has activated carbon powder and make fleece prepared, again spray into activated carbon powder, then make PPS carbon-doped fiber nonwoven by the mechanical adhesion needle point method, respectively viscose and activated carbon powder are sprayed onto nonwoven surface by spraying colloid system and activated carbon powder spraying system again, finally by folded net and thermal finalization system and cut and batch, make carbon-doped fiber filter cloth.
Facts have proved, use filter cloth of the present invention to carry out pellet in the coal-fired flue-gas and heavy metal Hg united and remove, can reach desirable effect; Be greatly improved the service life of cloth bag, can reach more than 90% obvious environment benefit to the removal efficiency of heavy metal Hg.
Claims (5)
1. carbon-doped fiber filter cloth that is used for removing Mercury In Coal Combustion Flue Gas, its component comprises: weight ratio is PPS fiber and the activated carbon powder of 1:1, active carbon powder sticks on the fiber surface in the mode that merges, in the uniform adsorption activity position to heavy metal Hg of the inner formation of filter cloth; The preparation method of described carbon-doped fiber filter cloth comprises:
(1) with the shredding in the opening or cleaning system of PPS fiber, then by the activated carbon powder spraying system nano level active powdered carbon is ejected on the good PPS fiber of shredding;
(2) melt the PPS fiber mixing combing that has activated carbon powder and make fleece prepared, again spray into activated carbon powder, make PPS carbon-doped fiber nonwoven by the mechanical adhesion needle point method;
(3) respectively viscose and activated carbon powder are sprayed onto nonwoven surface by spraying colloid system and activated carbon powder spraying system, finally by folded net and thermal finalization system and cut and batch, make carbon-doped fiber filter cloth.
2. a kind of carbon-doped fiber filter cloth be used to removing Mercury In Coal Combustion Flue Gas according to claim 1, it is characterized in that: the particle diameter of described activated carbon powder is nanoscale, and phosphorus content is higher than 80%.
3. preparation method who is used for removing the carbon-doped fiber filter cloth of Mercury In Coal Combustion Flue Gas comprises:
(1) with the shredding in the opening or cleaning system of PPS fiber, then by the activated carbon powder spraying system nano level active powdered carbon is ejected on the good PPS fiber of shredding;
(2) melt the PPS fiber mixing combing that has activated carbon powder and make fleece prepared, again spray into activated carbon powder, make PPS carbon-doped fiber nonwoven by the mechanical adhesion needle point method;
(3) respectively viscose and activated carbon powder are sprayed onto nonwoven surface by spraying colloid system and activated carbon powder spraying system, finally by folded net and thermal finalization system and cut and batch, make carbon-doped fiber filter cloth.
4. the preparation method of a kind of carbon-doped fiber filter cloth be used to removing Mercury In Coal Combustion Flue Gas according to claim 3 is characterized in that: activated carbon powder spraying system needs three covers in the described step (1), nozzle arranges enclosed hood.
5. the preparation method of a kind of carbon-doped fiber filter cloth be used to removing Mercury In Coal Combustion Flue Gas according to claim 3 is characterized in that: should be in described preparation process, to not reclaimed by the activated carbon powder of fiber institute adhesive tape, in order to reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010241604 CN101890341B (en) | 2010-07-30 | 2010-07-30 | Carbon-doped fiber filter cloth for removing mercury in coal-fired flue gas and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010241604 CN101890341B (en) | 2010-07-30 | 2010-07-30 | Carbon-doped fiber filter cloth for removing mercury in coal-fired flue gas and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101890341A CN101890341A (en) | 2010-11-24 |
| CN101890341B true CN101890341B (en) | 2013-01-02 |
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| CN102797114B (en) * | 2012-08-17 | 2016-09-07 | 苏州希尔克新材料有限公司 | The process equipment of a kind of elastic spacer for air filtering box and preparation technology |
| CN103949152B (en) * | 2014-04-23 | 2018-02-27 | 林小晓 | The method and nanometer flue gas removing heavy-metal device of a kind of middle heavy metal that removes smoke |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2669958Y (en) * | 2003-11-21 | 2005-01-12 | 沈阳环境科学研究院 | Composite high-temperature resistant adsorption filtering felt |
| CN101632885A (en) * | 2009-08-28 | 2010-01-27 | 东华大学 | Activated carbon non-woven filter cloth for coal-fired flue gas mercury removal and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008027530A1 (en) * | 2006-09-01 | 2008-03-06 | Seldon Technologies, Llc | Nanostructured materials comprising support fibers coated with metal containing compounds and methods of using the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2669958Y (en) * | 2003-11-21 | 2005-01-12 | 沈阳环境科学研究院 | Composite high-temperature resistant adsorption filtering felt |
| CN101632885A (en) * | 2009-08-28 | 2010-01-27 | 东华大学 | Activated carbon non-woven filter cloth for coal-fired flue gas mercury removal and preparation method thereof |
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