Preparation method of high-temperature-resistant filter felt
A technology of filter felt and high temperature resistance, which is applied in the field of filter felt preparation and high temperature resistant filter felt preparation, can solve the problems of high shrinkage, low SiO2 content, poor high temperature resistance, etc., and achieve high flame retardancy, high filtration efficiency, and wide application The effect of applying the foreground
Active Publication Date: 2016-08-24
SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
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Problems solved by technology
However, its glass fiber has not been pre-treated, and SiO 2 The content is still relatively low, the high temperature resistance is poor, the strength is not enough, and the shrinkage rate is high
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0029] A method for preparing a high temperature resistant filter felt, characterized in that it is carried out according to the following steps:
[0030] ①Acid treatment process: the glass fiber yarn is leached through the acid solution in the acid tank, then washed with water, dried in a drying oven, and finally each fiber yarn is wound on its own drum; the acid treatment process parameters: The concentration of hydrochloric acid is 12%, the temperature of the acid solution is 110°C, and the leaching time is 60 minutes;
[0031] ② Thermal sintering process: sintering the leached fibers to fully dehydrate the inside of the fibers and close the micropores; the thermal sintering process described above: the sintering temperature is 700°C;
[0032] ③Slitting process: after the glass fiber filaments are cut, they are quantified, loosened, and sent to the cotton feeder, and the cotton feeder is quantitatively fed to the carding machine;
[0033] ④ Carding into a web: Open the fib...
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Abstract
The invention relates to a preparation method of a high-temperature-resistant filter felt. The preparation method includes the specific steps: subjecting glass fiber to acid treatment and thermal sintering process to increase SiO2 content in glass and reduce shrinkage of the glass; by combing, laying and needling processes, preparing short glass fiber bundles into high-silica glass fiber needled felt, combining with base cloth, impregnating, and curing and setting to form the high-temperature-resistant filter felt. The preparation method has the advantages that after acid treatment and thermal sintering, SiO2 content of the glass fiber is increased and shrinkage of the glass fiber is decreased; the high-silica glass fiber can be used at 900 DEG C for a long time and can be used in the high-temperature insulating material field, the high-temperature smoke filtering field and other fields; the high-temperature-resistant filter felt composed of the high-silica glass fiber needled felt and the base cloth features high temperature resistance, flame retardancy, high filtering efficiency and the like, can effectively filter PM2.5 and has a promising application prospect in filtration of high-temperature flues and filtration of special gas heat media.
Description
technical field [0001] The invention relates to a method for preparing a filter felt, in particular to a method for preparing a high-temperature-resistant filter felt, which belongs to the field of filter materials. Background technique [0002] With the rapid development of science and technology, the continuous rise of industries such as electric power, steel, and construction has created a more affluent, convenient, and faster life for people, and at the same time, it has also posed a serious threat to the sustainable development of energy and the environment in our country. . Among the air pollutants emitted by these social industries, the main ones are corrosive chemicals such as high-temperature flue gas and dust emitted by industrial furnaces and garbage incineration. If they are directly discharged into the atmosphere without treatment, they will directly or indirectly affect people's health. Respiratory system, cardiovascular system, central nervous system, immune ...
Claims
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IPC IPC(8): B01D39/20D04H1/4218D06M15/256D06M15/643D06M13/517D06M13/148D06M101/22D06M101/36
CPCB01D39/202D04H1/4218D06M13/148D06M13/517D06M15/256D06M15/643D06M2101/22D06M2101/36
Inventor 陈照峰李艳明吴操李斌斌王蕾叶信立
Owner SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD