A high-temperature filter material production process for bag-type dust removal

Abstract

The invention discloses a high-temperature filter material manufacturing technology for bag type dust removal. The manufacturing technology comprises the following steps: (1) mixing polyimide fiber and polyphenyl thioether fiber according to the weight ratio of (30-70) / (70-30), and manufacturing a 30-60 g / m<2 > filter material dust receiving surface layer through a spunlace technology; (2) compositing the filter material dust receiving surface layer through a needle punching technology on a pecie of polyphenyl thioether base cloth, and manufacturing the filter material needle grey cloth; (3) conducting calendering shaping on the filter material needle grey cloth; (4) conducting singeing easily-dedusting treatment on the dust receiving surface layer of the filter material needle grey cloth subjected to calendering; (5) impregnating the treated filter material needle grey cloth with an polytetrafluoroethylene emulsion. According to the manufacturing technology, the polyimide fiber is implanted into the filter material surface layer (dust receiving surface layer) through a composite method to improve the filterability of the filter material; because the polyimide fiber adopts a irregularly-shaped (leaf-shaped) section structure, so that the polyimide fiber has a very large filtering surface area, and excellent filterability; meanwhile, the pressed powder stripping quality is good when the soot cleaning is conducted, so that the dust is easy to remove, the dust cannot be infiltrated into the filtering cloth, and the filtration resistance can be reduced.

Description

technical field [0001] The invention relates to the field of bag type dust removal material preparation, in particular to a high temperature filter material production process for bag type dust removal. Background technique [0002] At present, my country's economy has entered a stage of rapid development, and heavy industries (electric power, building materials, metallurgy, chemical industry, etc.) based on resources, energy, and consumption are developing rapidly. my country has become the world's largest steel, cement, coal, and chemical fiber producer. ; The second largest producer of electricity, non-ferrous metals and fertilizers. The development of high energy consumption and high pollution industries has brought serious environmental pollution problems. Air pollutants emitted by heavy industries are mainly characterized by high-temperature flue gas, and soot-like particulate matter is one of the main control objects. In the past, electrostatic precipitators were mai...

AI Technical Summary

Problems solved by technology

But at present, the research and development of high-temperature-resistant fibers in my country is still in its infancy, and there are few domestically-made high-temperature-resistant synthetic fibers, most of which rely on imports.

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