Textile Filters Play An Advantageous Role In Environmental Protection And Emission Reduction Win In Technology

< p > in order to give full play to the superiority of textile filter materials, the relevant units have organized a symposium on the use of high temperature dust filters and their filter bags in Wuqing, Tianjin.

At the meeting, experts from research, production and use departments of raw materials, filter bags and dust remover published their own opinions.

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< p > < strong > Wang Fenghua, deputy general manager of the special spandex Business Department of Shanghai textile (Group) Co., Ltd. < /strong > /p >

< p > companies focus on differentiated markets.

On the one hand, the location of materials in the market is not clear, positioning is duplicated; on the other hand, material supply exceeds customer demand, and mining of product application is not enough.

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The application of < p > a href= "http://www.91se91.com/news/index_c.asp" > Mixed Filter > /a > how to cope with the demand of the work condition? The imported brand has high added value and better after-sale service. We should draw lessons from the guidance of the product application case and the technical guidance of technicians to make up for the deficiency in the country.

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< p > can the standard really reflect the market demand? Is it necessary to update the testing index? The third party platform is not enough to establish a binding force, the entry threshold of the enterprises is relatively low, and the price war should be opposed, so we should invest more in basic technology research and development.

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< p > the products of the company can be applied to all fields of the use of aramid, mainly used in the cement field.

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< p > < strong > Professor Wang Hua, Sichuan Textile Science Research Institute < /strong > < /p >

< p > this year's PPS a href= "http://www.91se91.com/news/index_c.asp" > raw material < /a > has a good situation. For example, the annual supply of red crane chemical in Zigong is around 1000 tons.

In terms of price, imported PPS resin is more expensive.

At present, the price of domestic PPS fiber is low and the profit margins are low, forcing the fiber factories to mix or recycle the products.

However, the cost savings in this way are small and have a great influence on later quality.

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< p > the leading producers of PPS in China include Sichuan Deyang, rite, Eiffel, Donghua in Xiaoshan and Zhejiang, Jiangsu and Danyang in five.

Domestic fiber is generally 2.2 points special.

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< p > from the equipment, the five combined equipment in Jiangsu is the best, with 175 screws and 7500 tons / year production capacity, but the factory mainly produces polyester. Deyang has 120 tons of screw production capacity of 4000 tons / year, RT 2500 tons / year, Eiffel 65 small screw 1500 tons / year, Zhejiang Donghua production capacity is 7500 tons / year, the total annual output is about 2500~3000 tons.

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< p > raw material sources, Zigong Honghe has less supply, Deyang does not sell outside, Japanese factoring is more expensive, about 10 dollars, tank pull is also about 8~9 dollars, and PHILPS raw materials have not yet entered the Chinese market.

Doped fibers are not easy to see from appearance, but can be identified by inspection.

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< p > < strong > Xu Zhiliang, vice chairman of Zhejiang gel tech environmental protection special technology Co., Ltd. < /strong > /p >

< p > as a PTFE manufacturer, gel Tess carried out the research and development of microfiber in 2010.

The disadvantage of PTFE membrane filter media is uneven air permeability, and the gradient of filter product 0.8~0.9D strength is also defective.

The improved products are mainly used in waste incineration projects, steel and coal fired power plants, etc.

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< p > at present, the product performance of the company is no worse than that of foreign products. It has delivered 5 projects and 2 projects to be delivered.

The fiber can be mixed with glass fiber and acrylic to make composite material. As a high quality filter material, the next goal of gel is is to improve the life of PTFE products.

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< p > however, what is worrying is that in the PTFE industry, the PFAA organization of the United States launched a ban on PFOA, affecting the production and use of PTFE.

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< p > < strong > Guo Yuhai, Professor of materials and textile, Zhejiang Sci-Tech University, < /strong > < /p >

< p > in the past three years, < a href= "http://www.91se91.com/news/index_c.asp" > fiber > /a > rapid development, split membrane method (filament filament) has a large capacity, and there are two to three domestic enterprises for making emulsion method.

At present, the use of PTFE fiber as a thin film has made great progress compared with foreign products. However, the thickness of the domestic film is too thin, generally 5~10 micron, and the foreign products are mostly 2~20 microns.

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< p > last year, the school and the cooperation of gel Tess carried out a national 863 special project for coal-fired power plants, and 6 demonstration projects have been set up, mainly for PTFE coated filter media.

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< p > technology, combined with catalyst and fiber, the decomposition temperature of domestic catalyst is relatively high, generally at 210 degrees centigrade, and the application effect is not good. The United States Shell can decompose the catalyst at 140 degrees centigrade.

In the future, the goal is to treat carbon dioxide on the basis of desulphurization and denitrification. Recently, the NDRC has imposed restrictions on it, and 3 enterprises in China can absorb carbon dioxide sequestration.

More and more attention is paid to carbon dioxide emissions.

There are about 30~40 manufacturers in the domestic production of filter membrane, but the production is very good. The purpose of film mulching is to achieve zero carbon dioxide emissions. Technically, we should control the size of the hole and control the thickness of the membrane.

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