Membrane-laminated fiberglass filter medium capable of denitration and dust removal
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A glass fiber and film-coated filter material technology, which is applied in the field of air pollution control, can solve the problems of unsuitability for industrial production, catalyst powder and filter material cannot be firmly combined, and achieve the effect of avoiding adverse effects and firm combination
Active Publication Date: 2013-12-25
ANHUI JINHON GREENISM TECH
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Problems solved by technology
The catalyst powder and the filter material in these several methods cannot be firmly combined, and are not suitable for industrial production.
Method used
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Embodiment 1
[0042] 1. Remove NO X Catalyst suspension preparation:
[0043] (1) Weigh zeolite, diatomaceous earth, and sepiolite in a weight ratio of 4:2:1, mix them evenly, put them in 1.0mol / L hydrochloric acid solution, soak them in a water bath at 60°C for 24 hours, wash until neutral, and filter , dried, calcined at 460°C for 4 hours, cooled naturally and crushed through a 300-mesh sieve for use;
[0044] (2) Add 15% nano-Mn-Ce / TiO to the above crushed and sieved powder 2 Powder, 12% sodium silicate and 8% calcium lignosulfonate, grind at 5000rpm for 15 minutes at high speed, then add appropriate amount of water to beat to make a suspension with a concentration of 65%.
[0045] 2. Remove NO X Catalyst batch preparation:
[0046] Its composition is as follows (percentage by weight):
[0047] remove NO X Catalyst suspension solution 20%
[0048] Fluoropolymer Emulsion 30%
[0049] Silane coupling agent KH550 1%
[0050] Fluorinated polyacrylate emulsion wi...
Embodiment 2
[0061] 1. Remove NO X Catalyst suspension preparation:
[0062] (1) Weigh zeolite, diatomaceous earth, and sepiolite in a weight ratio of 5:3:1, mix them evenly, put them in 1.0mol / L hydrochloric acid solution, soak them in a water bath at a temperature of 50°C for 36 hours, wash until neutral, and filter , dried, calcined at 480°C for 3 hours, cooled naturally, crushed through a 300-mesh sieve, and set aside;
[0063] (2) Add 5% precious metal Pt nano-powder, 8% sodium silicate and 4% calcium lignosulfonate to the above crushed and sieved powder, grind at 6000rpm for 10min at high speed, and then add appropriate amount of water for beating to make a concentration It can be 55% suspension.
[0064] 2. Remove NO X Catalyst batch preparation:
[0065] Its composition is as follows (percentage by weight):
[0066] remove NO X Catalyst suspension solution 10%
[0067] Fluoropolymer Emulsion 15%
[0068] Silane coupling agent KH550 0.2%
[0069] Fluo...
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Abstract
The invention discloses a membrane-laminated fiberglass filter medium capable of denitration and dust removal. The membrane-laminated fiberglass filter medium capable of denitration and dust removal comprises a fiberglass filter base material, a NOX catalyst removing dip coating layer and an expanding micropore polytetrafluoroethylene filtering film; the membrane-laminated fiberglass filter medium capable of denitration and dust removal is characterized in that firstly, soakage drying post treatment is carried out on the fiberglass filter base material by using a NOX catalyst removing batch mixture, the NOX catalyst removing dip coating layer is formed on the surface of fiberglass, high-temperature hot pressing is carried out on the NOX catalyst removing dip coating layer and a polytetrafluoroethylene surface film, and the functional membrane-laminated filter medium which has a NOX catalyst removing function and can prevent the PM2.5 is prepared. The membrane-laminated fiberglass filter medium capable of denitration and dust removal provided by the invention can not only avoid the detrimental effect on a catalyst caused by flying ash particles, but also effectively reduce tiny dust such as PM2.5, and the discharge of the smoke dust which is below 5mg/Nm<3> is realized; the combination of catalyst powder and the filter medium are firm, the inherent properties of the filter medium are not affected, and the filter medium is particularly suitable for industrialized production.
Description
technical field [0001] The invention relates to a functional filter material for denitrification and dust removal, which belongs to the technical field of air pollution control. Background technique [0002] Flue gas NO removal X Among the technologies, the ammonia-based SCR technology has developed the fastest in recent years and has been widely used in Western Europe and Japan. It uses ammonia as a reducing agent, sprays it into high-temperature flue gas, and under the action of a catalyst, selectively converts NO X reduced to N 2 and H 2 O. This method has the advantages of high removal efficiency (up to 90%), no by-products, and no secondary pollution. [0003] The bag type dust removal technology is mature, and the filter material is the key component of the bag type dust collector. The glass fiber coated filter material can effectively reduce the emission of fine dust such as PM2.5, achieving 5mg / Nm 3 The following smoke and dust emissions. [0004] deNO X Dust...
Claims
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Application Information
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