1, the status and trends of foreign technology Since the 1960s, the applications of adsorption-enrichment-desorption enrichment-regenerative catalytic oxidation post-treatment technology have emerged in countries such as Europe and the United States. Dürr in Germany, Megtec in the United States, Enguil in the United States, and Biothermica in Canada are all in the industry Possession of the vast majority of the market. As the core technology of the overall technology, the improvement of adsorbent quality and the improvement of its utilization methods can significantly help improve the emission control level. The Swedish CarlMunters innovatively proposed the idea of ​​making the adsorbent material a rotor with honeycomb structure for the separation process and filed a patent in 1974. In 1986, Munters Company of Sweden took the lead in using honeycomb zeolite runner for VOCs exhaust gas treatment. In 1988, Western Japan Techno Co., Ltd. bonded corrugated and flat-shaped ceramic fiber paper with an inorganic binder to form a honeycomb-shaped rotor and then coated the hydrophobic zeolite in a honeycomb shape Access to the surface of the adsorption runner, and its successful use of VOCs purification. In addition, Nippon Nippon company's related products also represent the advanced world level. Currently in Japan, the United States, Europe and other countries and Taiwan, runner adsorption enrichment technology in the low concentration, large amount of wind industrial organic waste gas treatment has been widely used. Overall, the production technology of zeolite adsorption wheel is still in the hands of foreign enterprises, mainly Munters Corporation of Sweden, Sweden DST Corporation, Sweden ProFlute Corporation, Western Japan Institute of Technology, Japan Ni Jia Si (NICHIAS) company, Japan Daikin (Daikin) company, the United States atea-WKUSA and so on. The most common, most efficient and thorough treatment technologies used in the combustion of concentrated VOCs are oxidative combustion and catalytic combustion. Among them, the catalytic combustion technology enables VOCs oxidation reaction occurs at lower temperatures, effectively reducing equipment operating power. In the catalytic combustion technology based on the increase of ceramic regenerator and waste heat recovery system is regenerative catalytic combustion technology (referred to as RCO), can significantly reduce energy consumption. In the last century, Mitsubishi Corporation of Japan designed a thermal storage device switched by a moving valve and adopted a ceramic honeycomb body with high heat storage capacity, and carried out practical applications. In addition to continual improvement of equipment technology, catalyst development is also a key element affecting exhaust gas treatment. Foreign researchers have reported a series of Pd, Au, Ce, Al2O3 loaded Pt and other metal catalysts for VOCs catalytic combustion degradation experimental results. SüD-Chemie in Germany is one of the more successful companies currently developing VOCs for oxidative degradation. Although a few foreign companies have mastered the key technology of zeolite concentrator, the optimization and matching scheme of the enrichment system and the oxidation system still needs to be perfected, and the foreign related products are expensive, which limits the large scale of this technology in the domestic coating and automobile spraying industries Promote the application. 2, the status of domestic technology and trends Domestic zeolite adsorption and concentration equipment started late, more manufacturers to assembly, the agency as the main business model, as the core of the device zeolite adsorption unit basically relies on imports, foreign production technology companies have also set up equipment assembly plants in the country. However, the existing gap between domestic zeolite runner forming and preparation technology and foreign countries is gradually narrowing. Up to now, many R & D teams of universities and research institutes in China have carried out related research on zeolite runners, including South China University of Technology and Zhejiang University. However, if you want to reach and surpass foreign similar products, you need innovative research and development of wheel preparation technology, the formation of a wheel with independent intellectual property rights preparation technology. In recent years, China has matured in the development of catalytic combustion technology and has already had examples of industrial application and promotion in China. For the catalytic combustion technology, the use of honeycomb full-effect heat exchanger to recover low-grade heat source, to further optimize the structural design of the system and to achieve standardization, modular design is the future trend of development, representative companies include Qingdao Huashi Jie Environmental Technology Limited Company, Beijing Orleans Ao Fine Ceramics Co., Ltd., Fuzhou Jiayuan Environmental Co., Ltd. and so on. At present, relevant technical specifications of industrial organic waste gas in China are: Technical Policies for Prevention and Control of Volatile Organic Compounds (VOCs), Technical Code for Treatment of Industrial Organic Waste Gas by Adsorption Process, Technical Code for Engineering Treatment of Industrial Organic Waste Gas by Catalytic Combustion, , Series of standards are: "HJ / T4389-2007 industrial exhaust catalytic purification device", "HJ / T386-2007 industrial exhaust adsorption purification device", "HJ / T387-2007 industrial exhaust gas purification purification device", "GB20101-2006 coating Operating Safety Regulations Organic Waste Gas Purification Equipment Safety Technical Regulations "and so on. But so far, there are still no zeolite adsorption wheel device and zeolite adsorption thermal storage catalytic oxidation coupling device and other related technical specifications, manufacturing standards and product technical requirements. With the continuous improvement of technology and coating industry VOCs control the growing market, the urgent need to develop the appropriate standards and norms. All in all, the relevant technological research has been carried out in China and has a good foundation for research. However, breakthroughs are needed in the research and development of core materials, systematic integration and application of demonstration projects. The overall level of improvement and even more than the leading international level, to enhance the domestic paint and other industries gale, low concentrations of VOCs treatment level and equipment levels have significant help to promote the development of domestic industrial organic waste gas treatment industry. Hydraulic Components,Hydraulic Valve Block Parts,Aluminum Hydraulic Valve Block,Hydraulic Valve Core Parts Ningbo MHC Machinery CO LTD , https://www.mhcvacuumparts.com
Status and Trend of Research and Development of Zeolite Runner at Home and Abroad