Needled felt surface processing agent and impregnation technology thereof

A technology of surface treatment agent and needle-punched felt, applied in the field of needle-punched felt surface treatment agent and its impregnation process, can solve the problems of difficulty in meeting the minimum requirements, easy to be corroded by acidic substances, difficulty in cleaning dust, etc. Strong effect of dust removal and self-cleaning ability

Inactive Publication Date: 2006-09-06
SINOMA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This needle-punched felt filter material has serious defects such as being easily corroded by acidic substances and difficult to clean dust when used in coal-fired boilers

Method used

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  • Needled felt surface processing agent and impregnation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～9

[0028] Table 1 shows the formulations of 9 needle felt surface treatment agents selected for the embodiment of the present invention. In the header column of Table 1:

[0029] "PTFE emulsion" means a fluoropolymer emulsion (solid content 60%, commercially available). The molecular weight of polytetrafluoroethylene used in fluoropolymer emulsion ranges from 2,000,000 to 4,000,000;

[0030] "A6" represents a commercially available polyurethane aqueous solution (solid content: 35%, commercially available).

[0031] "285 silicone oil emulsion" means commercially available 285 benzyl silicone oil emulsion (solid content 35%, commercially available).

[0032] "TiO 2 "Represents that the nanomaterial used is nanoscale titanium oxide, and the particle size is 50-100 nanometers (commercially available).

[0033] Select commercially available KH-570, the chemical name is γ-methacryloxypropyltrimethoxysilane, and the molecular formula is CH 2 =CCH 3 COCH 2 CH 2 CH 2 Si(OCH 2 CH...

Embodiment 10

[0049] In the present embodiment, "FEP emulsion" adopts polytetrafluoroethylene hexafluoroethylene copolymer emulsion, (solid content 50%), and this component weight percentage is constant; "A6" adopts commercially available polyacrylate (solid content 38%), the component weight percent is constant; adopt commercially available nanometer zinc oxide (ZnO) to replace the titanium oxide (TiO 2 ), the particle size is 50-100 nanometers, and the component weight percentage is constant. The preparation process and dipping process of other ingredients and formula are the same as those in Examples 1-9.

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Abstract

The invention relates the needled felt surface processing agent and impregnation technology. The surface processing agent comprises film-forming agent, fabric finishing agent and coupling agent. The formulation is following: 1 4-15% fluoroplymer emulsion; 2 1-20% macromolecular ester polyaromatics; 3 1-8% silicon oil emulsion; 4 0.1-1% coupling agent; 5 0.3-3% nano materials; 6 water. The technology comprises the following steps: unfolding the needled felt, through impregnating bath, squeezing with pair roller extruding machine, drying the wet felt, wrapping the needled felt, and getting the product. The technology improves the physical chemical properties and durability of needled felt filter material.

Description

technical field [0001] A surface treatment agent for needled felt and its impregnation process, relating to the formulation of the surface treatment agent for a needle felt filter material (hereinafter referred to as filter material) and its process treatment method. Background technique [0002] In order to protect the atmospheric environment, all countries have strict requirements on the emission of industrial kiln dust. The flue gas discharged into the atmosphere must be treated by dust removal equipment to remove various harmful gases and dust that pollute the environment in the flue gas, so as to meet the requirements of the relevant national environmental protection regulations. [0003] At present, coal-fired boilers at home and abroad generally use filter materials made of needle-punched felt to filter out harmful components in flue gas. Compared with the existing electrostatic dust removal method, this dust removal method has a higher dust removal rate. However, th...

Claims

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Application Information

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IPC IPC(8): D06M15/256
Inventor 王小兵严荣楼徐涛朱平马洪波
Owner SINOMA SCI & TECH
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