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PPS impregnated membrane filter material and its preparation method and equipment
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A membrane-coated filter material and a membrane-coated technology are applied in the field of PPS-impregnated membrane-coated filter materials and their preparation to achieve the effects of high membrane coating efficiency, excellent performance and low membrane coating cost.
Active Publication Date: 2020-01-14
TIANDINGFENG NONWOVENS CO LTD
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[0005] The purpose of this invention is to provide a new type of PPS filter material and production process to solve the existing problems in the use and production of PPS filter material, so that the produced PPS filter material can meet the development needs of the bag dust removal market
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[0024] According to the second aspect of the present invention, a kind of preparation method of PPS impregnated film-coated filter material is provided, and this preparation method comprises the steps:
[0025] PTFE impregnation treatment, the PPS filter material is subjected to tentering, impregnation and drying treatment in sequence;
[0026] PTFE coating treatment, the PPS filter material impregnated with PTFE is subjected to PTFE coating treatment.
[0027] After PTFE impregnation treatment, it can improve the adaptability of PPS filter material to the complex working conditions of dust collectors with acidic gas, alkaline gas and oxidative gas;
[0028] The air permeability of the filter material treated with PTFE film is better, and the air permeability can reach 2-5m 3 / m 2 .min@200Pa, can adapt to discharge at 10mg / m 3 The requirements of the high emission standards, and the PTFE film on the surface of the PPS filter material after film treatment can repel water and...
Embodiment 1
[0057] figure 1 A production schematic diagram of PTFE coating treatment according to an embodiment of the present invention is shown.
[0058] The invention provides a kind of preparation method of PPS impregnated membrane filter material, and this preparation method comprises the following steps:
[0059] PTFE impregnation treatment, the 550g / m 2 The PPS filter material is subjected to tentering, impregnation and drying in sequence;
[0060] The eight-section oven temperature of the stenter setting machine used for stenter setting is set to 175°C, 185°C, 190°C, 200°C, 210°C, 215°C, 225°C, 230°C; the PTFE emulsion ratio used for impregnation is 15 %; The temperature of the four sections of the vertical dryer used for drying is set to 140°C, 140°C, 140°C, and 150°C respectively; the speed of the main machine is set to 4.5m / min.
[0061] Such as figure 1 As shown, PTFE coating treatment, the PPS filter material 4 after PTFE impregnation treatment is subjected to PTFE coatin...
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Abstract
The invention discloses a PPS dip-coated filter material and a preparation method and device thereof. The PPS dip-coated filter material sequentially comprises a PPS filter material layer, a PTFE dipping layer and a PTFE coating layer. According to the PPS filter material, the long-term service temperature can reach 160 DEG C and the instantaneous service temperature can reach 190 DEG C, the air permeability can reach 2-5m<3> / m<2>.min@200Pa, and the continuous service life can reach over 3 years. Therefore, a PPS filter material product is more excellent in performance, and the problems that an existing PPS filter material is short in service life, poor in acid and alkali resistance, corrosion resistance and oxidation resistance, low in service temperature and poor in filter accuracy, and cannot easily adapt to high emission requirements of which the emission standard reaches 10mg / m<<3> are mainly solved.
Description
technical field [0001] The invention belongs to the technical field of high-temperature filter material for atmospheric dust removal for industrial use, and more specifically relates to a PPS impregnated film-coated filter material and a preparation method and equipment thereof. Background technique [0002] At present, the PPS filter material is mainly used in the coal-fired boiler dust filtration industry. The PPS filter material used in the PPS filter bag on the market is mostly ordinary singeing and calendering filter material, water-repellent and oil-repellent filter material, PTFE impregnated filter material and PTFE coating Filter material, these PPS filter bags have a lot of problems during the use process, for example, the filter bag is pasted and the dust cannot be cleaned normally, the filter bag is oxidized and the filter bag is damaged, the filter bag is too ventilated and the discharge exceeds the standard, etc. These problems give The development of the enviro...
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