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The environmental protection industry is one of the four pillar industries in the world today and is the hotspot and focus of future industrial development in the world. It provides the main material basis and technical support for environmental protection and is an increasingly important part of the national economy. In view of this, relevant experts pointed out that the environmental protection machinery industry is facing unprecedented opportunities for development.
The sustainable development strategy currently being implemented makes the environmental protection machinery industry unrestrained to undertake the task of providing technical equipment for the "vigorous cycle of ecological environment and sustainable use of natural resources". Guo Baolin, vice president and secretary-general of the China Environmental Protection Machinery Industry Association, pointed out that compared with traditional mechanical products, the environmental protection machinery industry has been rapidly developed under the support of national policies and the guidance of laws.
Statistics show that in 1998 China’s economic losses caused by environmental degradation amounted to 430 billion yuan. The annual economic loss caused by natural disasters in China accounts for 3% of GDP, while the natural disaster losses in Japan account for only 0.8%, and the United States accounts for 0.06%. Experts estimated that investing 10,000 yuan in environmental protection can reduce and prevent disaster losses by 100,000 yuan, and the input-output effect is 1:10. To this end, the state has successively promulgated laws such as the "Environment Protection Law of the People's Republic of China," Ten Measures for China's Environment and Development, China's Agenda 21, the Ninth Five-Year Plan for National Environmental Protection, and the Vision for 2010. Regulations and documents. The "National Plan for Ecological Environment Construction" passed in 1999 proposed to use 50 years to complete a batch of projects that have a major impact on improving China's ecological environment. During the “Ninth Five-Year Plan†period, a total of 3.6 billion yuan was invested in pollution control, accounting for 0.93% of GDP, an increase of RMB 230 billion compared with the “Eighth Five-Year Planâ€. All this shows that our government has increased the sustainable development to the height of the national strategy and accelerated the pace of implementation.
Guo Baolin said that after the start-ups in the 1970s and the exploration in the 1980s, the environmental protection machinery industry in China has developed rapidly in the 1990s. In 2000, the total output value of the national environmental protection industry reached 1080 billion yuan, of which, the output value of environmental protection equipment (products) was 30 billion yuan, accounting for 27.8%. It is expected that from now until 2010, it will be an unprecedented period for the development of China's environmental protection equipment industry, and China's environmental protection equipment industry will face a broader market.
First of all, as for the treatment of municipal solid waste, the daily domestic garbage production in China is 286,000 tons, which increases at a rate of about 7%. According to statistics, the nation’s garbage inventory over the past years has reached more than 6 billion tons, and the area of ​​land occupied by infringement is 500 million square meters. However, the current level of mechanization of garbage disposal is low and inefficient, and a large amount of waste disposal equipment with high technical content is urgently needed.
Secondly, 51% of the 40 billion cubic meters of waste water discharged annually in China are from cities, and the pollution from surface water bodies is mainly from industrial and urban waste discharges. However, there are currently more than 400 urban sewage treatment plants that have been built and operated throughout the country, with a daily treatment capacity of 25.34 million cubic meters.
In recent years, in order to effectively prevent and control water pollution, the construction of urban sewage treatment plants across the country has gradually received attention. Many cities have incorporated the construction of sewage treatment plants into municipal infrastructure construction, but the construction speed is far behind the needs of water pollution prevention and control. According to the forecast of the Ministry of Construction, the wastewater treatment rate of China's urban inflow management network should reach 47% by 2005 and reach 70% in 2015. This large-scale construction of urban sewage treatment facilities indicates that the state and governments at all levels are responsible for the treatment of urban sewage. .
Third, there are nearly 200 million kilowatts of thermal power plants and nearly 500,000 industrial boilers and 180,000 industrial kilns in the iron and steel, non-ferrous metals, chemicals, and building materials industries that need to be treated for sulfur dioxide. With the improvement of people's living standards and concern for good health, dust pollution control equipment will also become a big market. The introduction of foreign advanced equipment in many areas is too costly, but it is still a blank in China's machinery manufacturing industry, which all contain huge business opportunities.
Experts suggest that China should seize the opportunity to focus on promoting the close integration of scientific research units and production enterprises, focus on the needs of the market, accelerate the construction of enterprise technology centers, carry out technological innovation, and promote the upgrading of products. Through the improvement of independent development capabilities and adaptation to the introduction of foreign advanced technology, it will be well-digested, absorbed and innovated, accelerate the commercialization and industrialization of scientific and technological achievements, and reverse the backwardness of product technology. At the same time, further improve the industry management system, optimize the company's production structure, and standardize product quality standards.
1, according to the characteristics of the fin structure
According to the shape and structure of the fin, the fin tube can be divided into the following types: Square finned tube (Square finned tube), spiral finned tube, Longitudinal Finned tube, Helical Serrated finned tube Tubes, Inner finned tube,
2, according to whether the fin material of the fin tube is the same as the tube body material, it can be divided into single metal fin tube and bimetal composite fin tube.
3, according to different processing technology of fin tube, fin tube can be divided into: rolled fin tube (extruded fin tube), welding fin tube, rolling fin tube, set fin tube.
Finned tube main performance requirements as a heat exchanger finned tube, long-term work in high temperature flue gas conditions, such as boiler heat exchanger with finned tube in a bad environment, high temperature and pressure and corrosive atmosphere, which requires finned tube should have high performance indicators.
1) Anti-corrosion performance (anti-corrosion)
2) Wear resistance (anti-wear)
3) Lower contact resistance
4) Higher Stability
5) Production technology status of anti-ash finned tube A set of finned tube.
Environmental protection machinery is expected to become China's machinery industry pillar industry
Experts predict that environmental protection machinery, as a new industry, is expected to grow from a childish industry to a certain scale, occupy a larger proportion in the machinery industry, have a wider service area, higher input and output, and have a greater impact on the national economy. Affected machinery industry pillar industries.
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