Polytetrafluoroethylene millipore membrane for purifying PM2.5

A polytetrafluoroethylene and microporous membrane technology, which is applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as uneven distribution, large pore size, and inability to filter dust, and achieve uniform membrane thickness, Uniform fiber thickness to avoid inconsistent filtration efficiency

Inactive Publication Date: 2013-07-24
LINGQI ENVIRONMENTAL PROTECTION EQUIP FACTORY SHANGHAI
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Problems solved by technology

[0006] The design index and use level requirements of the electrostatic precipitator used in the dust removal of flue gas and exhaust gas in various industrial fields in my country are relatively low, and the dust emission concentration is 100mg/Nm 3 It is difficult to satisfy the dust emission concentration at 30mg/Nm 3 Requirements for below and reduction of particles bel

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  • Polytetrafluoroethylene millipore membrane for purifying PM2.5

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Embodiment Construction

[0027] A polytetrafluoroethylene microporous membrane for purifying PM2.5 of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] Referring to Fig. 1, a polytetrafluoroethylene microporous membrane for purifying PM2.5 according to the invention includes a polytetrafluoroethylene microporous membrane 1.

[0029] The polytetrafluoroethylene microporous membrane 1 is formed by fibers in a three-dimensional cross-shaped structure.

[0030] The thickness of the polytetrafluoroethylene microporous membrane 1 formed by fibers with a three-dimensional cross-shaped structure is 5-8 μm, and the thickness tolerance is ±1.5 μm.

[0031] The polytetrafluoroethylene microporous membrane 1 formed of fibers with a three-dimensional cross-shaped structure has a pore diameter of 0.2 μm-0.5 μm and a porosity of 80%-90%.

[0032] The strength of the polytetrafluoroethylene microporous membrane 1 formed by fibers in a three-dimens...

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Abstract

The invention provides a polytetrafluoroethylene millipore membrane for purifying PM2.5. The polytetrafluoroethylene millipore membrane is characterized in that the polytetrafluoroethylene millipore membrane is formed by a fiber of a three dimensional cross structure, wherein the polytetrafluoroethylene millipore membrane formed by the fiber of the three dimensional cross structure comprises following parameters: 5-8mum of thickness, 0.2-0.5mum of aperture, 80-90% of amount of porosity, 25-30MPa of intensity, 50-90% of resilience, 2-12m3/(m2.min) of ventilating amount, and +-1.5mum of thickness tolerance. The polytetrafluoroethylene millipore membrane for purifying PM2.5 in the invention, has advantages of uniform fiber thickness, high amount of porosity, good resilience, uniform membrane thickness, multi-layer filtration, high filtrating efficiency, high and low temperature resistance, and high chemical resistance, can effectively filtrate dust with 2.5mum of particle diameter. The polytetrafluoroethylene millipore membrane for purifying PM2.5 in the invention, is suitable for application in a membrane coated filtrating material.

Description

technical field [0001] The invention relates to a polytetrafluoroethylene membrane, in particular to a polytetrafluoroethylene microporous membrane for purifying PM2.5. Background technique [0002] PTFE-coated filter material can be widely used in steel mills, coal-fired power plants, waste incineration power plants, cement plants, cement kiln head, kiln tail, chemical industry, coal-fired boilers, etc. Play an unprecedented backbone. [0003] In recent years, with the country's increasing emphasis on environmental protection, in February 2012, the State Council agreed to release the newly revised "Ambient Air Quality Standards", adding PM2.5 monitoring indicators. [0004] PM, the English full name is particulate matter, which is particulate matter. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 μm in the atmosphere, also known as particulate matter that can enter the lungs. Although PM2.5 is only a small component of the earth's atmospheri...

Claims

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Application Information

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IPC IPC(8): B01D71/36B01D46/54
Inventor 茅惠东黄磊冷瑞娟顾根林陈海峰黄斌香
Owner LINGQI ENVIRONMENTAL PROTECTION EQUIP FACTORY SHANGHAI
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