The Annual Meeting Of Funing Textile Industry Association And The Separation Of Middle Class Filter

On September 18, the annual meeting of filtration and separation textiles branch of China Industrial Textiles Industry Association and the innovation and Development Forum of filtering textile materials was held in Funing, Jiangsu Province.

Mr. Sun Xiaoyin, deputy director of Textile Industry Association of China, director of Textile Industry Association of China, Mr. Sun Xiaoyin, director of Textile Industry Association of China, director of Textile Industry Association of China Ye Zhimin and nearly 400 industry insiders attended the meeting.

Xu Huaming, Secretary of Funing County Party committee, said in his speech that in recent years, Funing, Jiangsu Province, has built the environmental protection filter material industry as a characteristic industry in the industrial system of new energy, intelligent metal processing and environmental protection filter material, which will form a scale of 5 billion within this year. At present, the quality of environmental protection filter media industry in Funing has realized the transformation from quantitative change to qualitative change. There are 176 enterprises of various types in the county, and the market share of national filter material is more than 40%. It has become the production base of environmental protection filter material with the highest concentration, the most complete chain, the largest brand influence and the largest market share in China. The development of filter material enterprises in Funing area has realized the transformation from single to group. There are 136 enterprises in the 55000 square kilometer environmental protection filter material industrial park, which has won the title of national textile industry cluster innovation and development demonstration area, and Funing has become the only environmental protection filter material town in China. The investment environment in Funing has also changed from a very good to a better one. The Funing government has set up a special guidance fund for industrial development, strengthened the support of enterprise employment, land and talents, and created better conditions for industrial development. In the future, Funing will continue to deepen industry cooperation and make greater contributions to the development of China's environmental protection filter media industry.

In his speech, Li Lingshen said that from January to July this year, the industrial added value of China's industrial textiles industry reached 60%, the industry's profit growth reached 224%, and the export of related products reached 55.7 billion US dollars, with a year-on-year increase of 276%, and a number of production indicators set industry development records. The medical and health textiles have made great contributions to the fight against the new epidemic. The textiles for filtration and separation, transportation, geotechnical construction and national defense and military industry are less affected by the epidemic, and the industry has achieved stable development. After years of development, Funing environmental protection filter material industry has a certain influence in domestic and foreign markets.

Li Lingshen put forward three suggestions for the future development of Funing environmental protection filter material industry. The first is to create a world-class industrial cluster. Funing filter material industry has advanced equipment, advanced technology and rich international exchange experience. At present, it has the basic strength to impact the world-class industrial cluster. The second is to improve the advanced nature of the industry. The international trade situation is complex and changeable. The cost of scientific and technological innovation and achievement promotion is higher and higher. Infrastructure construction and high-value development of the industrial chain are more important. Although Funing's filter material industry has formed a whole industrial chain from fiber, nonwoven materials, base cloth and filter bags to filter equipment and engineering services, it should continue to carry out scientific and technological innovation in the future, We will strengthen the cooperation between industry, University and Research Institute and improve the ability of independent research and development. The third is to realize the sustainable development of the industry. The environmental protection filter material itself is a green industry. Funing filter material performs well in intelligent manufacturing, big data construction, practicing the spirit of craftsman and model worker. In the future, we should continue to pay attention to the sustainable construction of the industry, strengthen the green market expansion, and develop the industry with high quality.

Iron and steel industry is an important application field of environmental protection filter materials. At the meeting, Yao Qun, Secretary General of bag dust removal Committee of China Environmental Protection Industry Association and chief engineer of Tiancheng Environmental Protection Technology Co., Ltd. of Sinosteel group, introduced the application and problems of bag dust removal technology in iron and steel industry. Bag filter is the mainstream technology of ultra-low emission, which determines the success or failure of ultra-low emission in non electric industry. At present, 95% of iron and steel plants adopt bag filter. Pre charged bag filter is the core and mainstream device of ultra-low emission in steel industry. The pre charged bag filter adopts pre charged + straight through bag filter + PM2.5 filter material to form an integrated device, which has the advantages of continuous and stable emission less than 10mg / m3, energy saving of more than 40%, 3-year recoverable investment, land occupation reduced by 35%, ash bin number reduced by 50%, ash conveying device reduced by 50%, reliable and stable, fault point reduced by 90%, intelligent remote control and unattended. The intelligent management and control cloud platform technology of bag type dust removal system can be used for real-time monitoring, operation evaluation, remote supervision, fault diagnosis and elimination, accident warning and life prediction. The overall technology is internationally advanced and has attracted more and more attention from the industry. However, there are still some problems in the bag filter industry, such as insufficient understanding of the nature and operation process of the flue gas, and the filter bag is off-line and falling off the bottom, which should be paid attention to by the industry.

At the meeting, the awarding ceremony of China nonwovens (Funing) vocational skills training center and the unveiling ceremony of "Funing Cup" of national textile sewing workers (filter bag) vocational skills competition were also held.

Xia Qianjun, President of the filtration and separation textiles branch of Zhongzhong Association and executive director of Nanjing Jihua 3521 Special Equipment Co., Ltd., made the annual work report of the filtration and separation textiles branch of Zhongzhong Association. According to him, the textile industry for filtration and separation will show a certain growth in 2019. In the first half of the year, the market slowed down, while in the second half, the demand was strong, but the production capacity increased significantly, the market competition was fierce, and the profit margin was reduced. At the beginning of the new year 2020, the outbreak of the new crown epidemic has brought many business opportunities to the filtration and separation industry. The gas-solid barrier, air purification and filtration products such as hoods, protective clothing products and related industrial chain enterprises such as meltblown cloth, polytetrafluoroethylene air filtration membrane, electrospinning nanofiber membrane and other industrial chain enterprises have been developed to a certain extent. Some enterprises seize the opportunity and win new development opportunities and vitality. Xia Qianjun suggested that in the current new competitive environment, enterprises should timely adjust their development strategies and change their business models. They should not only grasp the opportunity to act quickly, but also control risks, and improve their ability to resist risks. At the same time, they should integrate innovation mechanism, strengthen the integration and cooperation of industrial chain, and realize cross-border integration.

In the topic report, Wang zuojie, professor senior engineer of Tianjin cement industry design and Research Institute, introduced the application status and problems of filter materials in cement industry. The progress of filter material technology has promoted the progress of dust removal technology in cement industry. The filter materials used in cement industry should have the characteristics of high temperature resistance, corrosion resistance, hydrolysis resistance, antistatic, high air permeability and long service life. The commonly used raw materials include polyester, aramid, polysulfone, acrylic, glass fiber and other fibers. At present, the progress of dust removal technology pays more attention to the progress of dust collector body structure technology. With the advantages of high-quality, high-efficiency and low-efficiency, the filter bag is designed to reduce the dust emission. In addition, reasonable filtering wind speed of bag filter is very important for ultra-low dust emission. At present, there are some problems in the application of filter material dust removal in cement industry, such as rough manufacturing, unreasonable equipment structure and so on. Wang zuojie suggested that the performance of filter materials could be improved from the aspects of filtration efficiency, filtration resistance, temperature resistance, chemical corrosion resistance, hydrolysis resistance, durability and economic performance, so as to expand its application in cement industry.

Professor Guo Yuhai of Zhejiang University of science and technology introduced the application of PTFE materials in the field of filtration and personal protection. He said that at present, PTFE materials can be used in high-temperature dust removal, bubble point membranes such as medical, food, electronics, semiconductors, clean workshops, fresh air systems, filters and other (ultra) efficient filtration, as well as water filtration and other fields. In personal protection applications, PTFE can be used in the production of masks. Fully fibrotic PTFE film is an effective way to achieve high efficiency and low resistance. High shear processing technology of PTFE resin with full fibrosis and blending technology of fiber hybrid PTFE resin are the key technologies. In terms of medical protective clothing, PE (PP) microporous membrane, PU membrane and PTFE membrane can be used for disposable protective clothing production. The group standard T / zmds 30001-2020 "reusable medical protective clothing" was issued in April this year, which is conducive to the application and promotion of PTFE materials in the industry.

Wu Haibo, associate professor of Donghua University, introduced the research and application of polypropylene spunbonded melt blown air filter material with low resistance and high dust capacity. In the system of fresh air, automobile, mask and filter, the performance of low resistance and high dust capacity is convenient to save energy and prolong service life. The current air filter materials are difficult to meet the requirements due to their fine fiber diameter and compact structure. Two component spunbonded filter materials with micron diameter were prepared, which had a fluffy three-dimensional structure. The morphology, strength, pore size and distribution, and porosity of the two-component spunbonded materials can be controlled by the blowing temperature, draft air pressure and thermal bonding consolidation. After testing, the filtration resistance of the final two-component spunbonded material is only 35.14pa, the dust capacity is 9.36g/m2, and the filtration efficiency after electret is 97.02%. The study of two-component spunbonded filter materials can provide a new idea for the design and development of filter materials.

Chang Deqiang, associate professor of Northeast University, introduced the application of micro aerosol and filtration protection. Aerosol refers to the gas dispersion system composed of solid or liquid particles suspended in the gas medium, with the size of 0.001 ~ 100 μ M. Natural products, combustion products, industrial production, artificial powder and so on can be called the sources of aerosols. Electrostatic treatment process can effectively filter aerosol. The electret treated melt blown nonwovens have the advantages of high filtration efficiency and low filtration resistance because of its persistent static electricity, which can capture fine dust by electrostatic effect. Polypropylene is an ideal material for electret fiber because of its high resistivity and large charge injection capacity. After 1440 hours of storage, the melt blown nonwovens remained unchanged.

Zhu Ruidian, deputy director of Guangzhou inspection, testing and Certification Group Co., Ltd., analyzed the standard analysis of epidemic protective masks. He said that China's medical masks are divided into medical protective masks (gb19083), medical surgical masks (yy0469) and disposable medical masks (YY / t0969), while non-medical masks include self-priming filtering anti particulate matter respirator (gb2626), daily protective masks (GB / t32610) and children's masks (GB / t38880); EU masks include medical masks (en14683) and anti particulate inhalation filter respirators (en149); Masks in the United States are divided into medical masks (ASTM F 2100) and particulate matter filter respirators (42 CFR Part 84). The main technical requirements of various mask standards at home and abroad are different. At present, there is a high unqualified rate in mask testing. The reason is not that the product quality is not up to standard, but is caused by many factors, such as the qualification of the inspected enterprises is not equal, the reference standards are not matched, and the enterprises' cognition of the standards is not accurate.

Hou Haoqing, Professor of Jiangxi Normal University, introduced the production and application of electrospun polyimide nanofibers. At present, electrospun polyimide (PI) nanofibers have been industrialized in Jiangxi Xiancai company. Compared with other electrospun nanofiber products, the biggest feature of PI nanofiber nonwovens is self-supporting. Compared with existing meltblown fabrics, PI nanofiber nonwovens are characterized by high temperature resistance and high porosity. Electrospun PI nanofibers can be used in lithium battery separator, filament yarn and fabric, electrospun polyimide superfine fiber, electrospun polyimide microfiber filament aerogel and other fields. These electrospun fiber products have been applied or are being developed and applied in social activities, contributing to the progress of national defense construction and social life, and have broad development prospects.

During the meeting, the participants visited Funing environmental protection filter material intelligent manufacturing industrial park, Funing environmental protection filter media technology center, and environmental protection filter material online and offline trading market.