ECR/PTFE fiber composite filtering base cloth processing method

Abstract

The invention discloses an ECR / PTFE fiber composite filtering base cloth processing method; an ECR / PTFE fiber composite filtering base cloth is formed by blending and weaving ECR fibers and PTFE fibers; the features are that a surface chemical treatment agent is used for dipping pressing treatment after the ECR / PTFE fiber composite filtering base cloth is weaved, and comprises PTFE emulsion, hydroxy silicone oil, a silane coupling agent A151 and superfine graphite; compared with the prior art, the advantages are that the ECR / PTFE fiber composite filtering base cloth has filtering base cloth fibers with high in high acid resistant performance, high filtering performance and high cost performance, has better acid resistant performance than a GF / PTFE fiber composite filter base cloth, is longer in life than the GF / PTFE fiber composite filter base cloth, even though the prices of the two are close; the ECR / PTFE fiber composite filtering base cloth has the best acid resistant performance, and can be applied to the high acidic high temperature flue gas dedusting filtering field.

Description

technical field [0001] The invention relates to the technical field of flue gas treatment, in particular to a treatment method for ECR / PTFE fiber composite filter base cloth. Background technique [0002] The overall deterioration of my country's environment has not been fundamentally curbed, and environmental problems have become one of the main factors threatening human health, public safety and social stability. my country is the largest coal-fired production and consumption country. Coal-fired power generation emits 5 million tons of soot every year, and most of the soot is fine dust below PM10. Industrial dust occupies an important position in air pollution. Moreover, the high SO content in this flue gas 2 , NO X and HC and other highly acidic gases, where SO 2 Emissions account for more than 50% of the country's total emissions. For coal-fired highly acidic flue gas dedusting, most of the high-temperature filter base fabrics such as PPS (polyphenylene sulfide), PTF...

AI Technical Summary

Problems solved by technology

PPS is expensive, and it is not resistant to oxidation, and its high-temperature resistance grade remains unchanged, while PTFE has low strength, poor dimensional stability, and high price, making it difficult to use alone. GF has poor acid resistance (especially E glass fiber), so it requires the same price as GF, while GF has poor acid resistance (especially E glass fiber). It is the purpose of the present invention that inorganic fibers with good acid resistance replace GF and PTFE fibers to compound and prepare high-performance filter base cloth