Plate and gasket are the critical part of a removable Plate Heat Exchanger. The main function of the plate is to isolate the medium and perform heat exchange. Its main materials are stainless steel (304/304L, 316/316L, 254SMO), titanium, nickel, titanium-palladium alloy, Hastelloy, etc. The sealing gasket is installed in the gasket groove around the plates to seal the periphery between the plates to prevent the fluid from leaking out, and according to the design requirements, seal part of the corner holes so that the hot and cold media flow according to their own flow paths. The structure of the plate heat exchanger consists of a fixed frame, a movable frame and corrugated plates sandwiched between the two frames. Hot and cold liquids pass sequentially through the area between the corrugated plates separated by sealed elastomer paths. To prevent leaks, good gasket elastomers are installed around the perimeter of the plates and large fastening bolts are used to hold the plates together. The structure of the plate heat exchanger makes sealing a key part of this equipment, responsible for the service life of the entire equipment. Depending on the process medium, the gasket must be chemically and/or temperature resistant. Spetech supplies seals for most existing plate heat exchangers: power industry, petroleum processing, food and beverage industry, sugar industry, chemical, pulp and paper industry. The most commonly used materials are: NBR, HNBR, EPDM, FPM (different grades). There are two basic ideas for the installation of seals: glue seals and clip seals. Clip-on washers do not require any adhesives for installation. This modification makes it possible to mount the spacers by installing clips in the grooves in the plate. As a result, the gasket is highly resistant to pressure and can be replaced quickly and easily.
Heat Exchanger Plate&Gasket,Phe Gasket,Gea Gasket,Nbr Gasket Guangdong Jiema Energy Saving Technology Co.,Ltd , https://www.jiemaheatexchanger.com
According to the introduction of the Ministry of Science and Technology, in the process of implementing the strategy of rejuvenating the country through science and education and comprehensively advancing the construction of an innovative country, China will expedite the implementation of major science and technology projects and strive to break through the key scientific and technological problems that drive the technological revolution and promote industrial rejuvenation. China Petroleum and Chemical Industry Association proposed that the development of the industry must rely on science and technology, science and technology must be oriented to the development of the industry economy. The petrochemical industry urgently needs to implement the principle of “independent innovation, key leapfrogging, support for development, and lead the future†and accelerate the transformation of scientific and technological achievements.
In response to the problem that science and technology generally reflected by scientific research units and enterprises can hardly translate into productivity and innovation from the market, the "Government Work Report" emphasizes that it is necessary to deepen the reform of the science and technology system and focus on resolving the disconnection between technology and economy, and promote the use of enterprises as the mainstay of the market. The construction of a technological innovation system that is oriented, combined with production, study and research, promotes the optimal allocation, open sharing, and efficient use of scientific and technological resources.
According to the “Technical Guidelines for the Revitalization of the Petroleum and Chemical Industry†issued by the Petrochemical Association, the key areas in which science and technology support the revitalization of the petrochemical industry mainly include: oil and gas exploration and development, petroleum refining, petrochemicals, fertilizers, pesticides, rubber processing, new coal chemical industry, Chlor-alkali, new chemical materials, fine chemicals, chemical equipment, and environmental protection.
Luo Haizhang, chairman of the China Pesticide Industry Association, said that the “Government Work Report†put forward the word “good†and vigorously pushed the economy into an innovation-driven, endogenous growth and development track, which was very timely for the traditional chemical industries such as pesticides. The pesticide industry must continuously improve the level of product technology, equipment, and automation, strengthen the construction of enterprise technology centers, and improve independent innovation capabilities. For example, many companies have established postdoctoral workstations and established national-level enterprise technology centers in recent years. This practice is worth promoting.
In order to optimize the structure of pesticide products, promote industrial technological progress, speed up the elimination of backward production capacity, and strengthen ecological and environmental protection, the pesticide industry will vigorously promote a number of new clean production technologies such as cyanide-method paraquat, methane-methide acetochlor, etc. Technology; Continuous development of pesticide product varieties with independent intellectual property rights; Focus on the development of sudden major pest control technologies and new varieties of pesticides; Development environment compatible, easy-to-use suspension agents, water emulsions, microemulsions, water dispersible granules New preparations such as microcapsules; key technologies for the development of the "three wastes" processing high-efficiency technologies and intermediates for cleaner production.
The international financial crisis has pushed the products and technologies with low technological content and low added value to the edge of elimination. Wu Yongyuan, deputy secretary-general of China Polyurethane Industry Association, felt deeply about this. He said that the polyurethane industry, especially downstream products, should pay attention to the new economic development model, increase innovation, and improve product technology level and quality level, which is the key to enterprises emerging from crisis and maintaining sustainable development. This year, the country will successively issue relevant industry access conditions. The association shall increase support and policy inclination, and encourage the technological progress and product quality of large-scale MDI and TDI devices, support the industrialization of high-value-added specialty isocyanates, and further strengthen the planned The construction of isocyanate chemical industry park will build a world-class isocyanate production base with complete supporting industries, fully recycled materials, energy consumption and low "three wastes" emissions.
Weng Hanyuan stated that the polyurethane industry will rely on the National Polyurethane Engineering Technology Center and a number of state-level enterprise technology centers to provide key technologies for low-carbon, energy-saving and emission-reduction technologies in the industry, focusing on enterprises, supporting the state and local governments. , To develop polyurethane base materials such as isocyanate, polyether polyol, and propylene oxide, so that the technology and scale gradually reach the international level.
Some industries directly related to consumers need to rely on innovation to improve product quality and quality to meet people's needs. Ma Zhanfeng, secretary-general of the China Plastics Processing Industry Association, said that under the government's policy of expanding domestic demand, the plastics industry must pay more attention to scientific research and enhance its ability to independently innovate. At present, the speed of renewal of plastic products is accelerating. Some domestic companies are pursuing R&D and promotion in plastics modification and special materials, and expanding their applications in home appliances and electrical and electronic accessories, automobiles, and railway high-speed buses. They are also striving to achieve breakthroughs in the construction and packaging markets, and Constantly expanding its high-end market share.
With the improvement of understanding, improving the level of technology has truly become the company's internal needs. For instance, Cao Chaoyang, chairman of Fengshen Tire Co., Ltd., stated that corporate innovation is not merely a technological innovation but a systematic project, which is an overall innovation in all aspects such as enterprise architecture, mechanism, system, and production process management. Corporate innovation must not only foster the ability of independent innovation, but also dare to introduce new technologies and concepts from other industries in the world.
The oil and chemical industry is a technology-intensive industry. Its development is guided by science and technology. Endogenous technological progress is an important factor in ensuring sustained economic growth. This is in line with the innovation-driven and endogenous growth that Premier Wen Jiabao proposed in this year's "Government Work Report." The combination of the country's "Rejuvenating China through Science and Education" and the industry's "Strengthening Science and Technology" strategy will promote science and technology to play a powerful supporting role in the development of the industry.