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A filter material for decomposition of dioxin in high-temperature smoke and dust and its preparation method

A filter material and soot technology, which is applied in the field of filter material and its preparation for the decomposition of dioxin in high-temperature soot, can solve the problems of reducing fiber strength, fiber fragility, and low yield, so as to reduce loss and make the preparation process simple and easy line effect

Inactive Publication Date: 2016-02-17
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When these methods process fibers or microporous films, they all cause wear and tear on the dies of the equipment to varying degrees (the dies of equipment for processing polytetrafluoroethylene fibers and films require a high degree of smoothness), and the yield is low (catalysts added to the fibers will Reduce fiber strength, fibers are vulnerable to needle punching and spunlace)

Method used

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  • A filter material for decomposition of dioxin in high-temperature smoke and dust and its preparation method
  • A filter material for decomposition of dioxin in high-temperature smoke and dust and its preparation method
  • A filter material for decomposition of dioxin in high-temperature smoke and dust and its preparation method

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preparation example Construction

[0036] The preparation method of filter material of the present invention comprises the following steps:

[0037] (1) Supported catalytic inner core: PTFE resin, activated carbon, and catalyst are evenly mixed in a weight percentage of 1:0.1~10:0.01~1, and then pressed and sintered at high temperature in sequence to obtain a supported catalytic inner core;

[0038] (2) Filter material for the decomposition of dioxins in high-temperature smoke and dust: the supporting catalytic inner core is filled in a film-coated dust removal bag and used as a support for the dust removal bag to obtain a filter material for the decomposition of dioxins in high-temperature smoke and dust.

[0039] The preferred pressing condition is normal temperature, the pressure is 0.02 MPa to 80 MPa, and the pressing time is 1 hour to 24 hours.

[0040] The preferred sintering conditions are a temperature of 200° C. to 360° C. and a sintering time of 1 hour to 24 hours.

[0041] Preferred catalysts can be...

Embodiment 1

[0047] (1) Supporting catalytic inner core: Mix polytetrafluoroethylene resin, activated carbon, and catalyst in a weight percentage of 1:0.1:0.01, and follow the attached figure 1 The shape in is pressed at 0.02 MPa, pressed for 24 hours, and sintered at 200°C for 24 hours to prepare a supported catalytic inner core. The catalyst is a three-way catalyst of vanadium pentoxide-tungsten-titanium dioxide;

[0048] (2) Filtration material for dioxin decomposition in high-temperature smoke and dust: 8 supporting catalytic inner cores are packed in a film-coated dust removal bag to form a film-coated dust removal bag-supporting catalytic inner core structure to prepare dioxins in high-temperature smoke and dust The decomposed filter material has a particle interception efficiency of 99.95%, and a dioxin decomposition efficiency of 95%.

Embodiment 2

[0050] (1) Supporting catalytic inner core: mix polytetrafluoroethylene resin, activated carbon, and catalyst in a weight percentage of 1:10:1, and follow the attached figure 2 The shape is pressed at 80 MPa, pressed for 1 hour, and sintered at 360 ° C for 1 hour to prepare a supported catalytic inner core. The catalyst is a three-way catalyst of vanadium pentoxide-tungsten oxide-titanium dioxide;

[0051] (2) Filtration material for the decomposition of dioxins in high-temperature smoke and dust: 20 supporting catalytic inner cores are packed in a film-coated dust removal bag to form a film-coated dust removal bag-supporting catalytic inner core structure to prepare dioxins in high-temperature smoke and dust The decomposed filter material has a particle interception efficiency of 99.999%, and a dioxin decomposition efficiency of 99%.

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Abstract

The invention discloses a filter material for decomposition of dioxin in high temperature smoke dust and a preparation method of the filter material. The filter material is formed by filling a laminated dust removal bag with a supported catalytic inner core, wherein the supported catalytic inner core comprises the following components: polytetrafluoroethylene resin, activated carbon and a catalyst. The preparation method comprises the following steps: uniformly mixing the polytetrafluoroethylene resin, activated carbon and the catalyst according to a weight percent of 1 to (0.1-10) to (0.01-1), and sequentially pressing and performing high-temperature sintering, thereby obtaining the supported catalytic inner core; and filling the laminated dust removal bag with the supported catalytic inner core which serves as a dust removal bag supporting body, thereby obtaining the filter material for decomposition of dioxin in high temperature smoke dust. According to the invention, the supported catalytic inner core replacing a traditional stainless steel wire liner is used for decomposing dioxin without influencing the performances of equipment used for processing polytetrafluoroethylene fibers and films, and the preparation process is simple and feasible.

Description

technical field [0001] The invention relates to a filter material and a preparation method thereof, in particular to a filter material for decomposition of dioxin in high-temperature smoke and dust and a preparation method thereof. Background technique [0002] Waste incineration has become one of the most important and effective technologies for waste disposal in various countries. Waste incineration treatment can not only turn waste into treasure, but also regenerate energy resources through steam-electric co-generation, and can reduce the volume of waste by about 90%. However, the incineration process will inevitably produce a large amount of pollutants, such as particulate matter, acid gas, heavy metals and dioxins. These pollutants are extremely harmful to human health, and dioxin is the most harmful and the most difficult to remove. [0003] Particles in garbage incineration generally use dust-removing bags, which are generally processed into non-woven fabrics by acu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01D53/86B01D53/70
Inventor 郭玉海朱海霖唐红艳王峰张华鹏
Owner ZHEJIANG SCI-TECH UNIV
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