![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Since the 1980s, dust removal equipment has been greatly developed in various countries around the world.
United States
After the CleanAir Act was enacted in 1963, it was revised several times in 1970, 1975, and 1977. The Clean Air Act, revised and supplemented in 1990, passed the Congress and became the most rigorous and detailed regulation in the world. . Its main contents include determining the types of harmful air pollutants, and dividing the country into the compliance area, the non-standard area (which varies with the pollutants), the latter to meet the deadline, and the implementation of the emission permit system, in addition to Relevant provisions on vehicle emissions, acid rain and ozone layer protection.
In terms of standards, the United States has established National Ambient Air Quality Standards (NAAQS), National Hazardous Pollutant Emission Standards (NE-SNAPS) and New Pollution Source Performance Standards (NSPS), which control pollutant emissions and are increasingly becoming more Strict, for example, for power stations, the United States in the early 20th century, the emission standard is 0.6lb/10^6Btu. In 1971, the NSPS was 0.116/10^6Btu, and the 1978 NSPS was further reduced to 0.031b/Btu, only the 20th century. The first 1/20.
Germany
The emission standard for various industrial pollutants is 50mg/m^3. The average daily concentration of the 17B1mSchV standard published recently is l0mg/m^3, and the average concentration of 1/2 hour is 30mg/m^3.
Adopting strict emission standards, German dust emissions have been gradually reduced since the 1960s, and have decreased by about 65% in the past 30 years, with further reductions, and the total suspended solids (TSP) concentration in the environment has also decreased by about 65%. .
Japan
For a typical coal-fired power plant flue gas cleaning system requires an outlet dust emission concentration is less than 30mg / Nm ^ 3, while in coal-fired power nearby cities, which is similar to the fuel requirements of the plant, requires less than 10mg / Nm ^ 3.
China
Since the first release of the pilot emission standards for 13 substances in 1973, various industrial sectors have successively established dust emission standards for the industry. For example, the emission standards for industrial boilers are determined according to the first, second and third regions of the atmospheric environment standards. The 1983 standard (GB3841-83) is 200,400,600 mg/Nm^3, and the standard published in 1992 (GB13271 one). 91) For the installation before August 1, 1992, respectively, 200,300,400mg/Nm^3, and after August 1st, the installation is 100,250,350mg/Nm^3, and the SO2 emission concentration is also required.
The first-class areas are nature reserves, scenic spots and other areas that require special protection; the second-class areas are residential areas, mixed mixed commercial and commercial areas, cultural areas, industrial areas and rural areas.
Ambient air functional area quality requirements
Class 1 zone is subject to primary concentration limits
The second-class concentration limit is applicable to the second-class zone.
Market prospects
Foreign experience:
The US market for dust control equipment in 1993 was 1.53X10^9, US dollars, slightly higher than the gas processing equipment 1.456X10^9 US dollars, one of which was the reduction of flue gas desulfurization equipment in power plants. In the air pollution control apparatus, the power station ranks first, followed by chemical, paper accounted for the first three, four petroleum refining accounted for the first, then followed by the metallurgical, cement, mining and the like.
Authoritative forecast:
China's cement, thermal power, iron and steel industry of air pollutant emission standards have been improved, but others such as coke dust emissions standards, electrolytic aluminum and other industries are still between 100-150mg / m3, with the existing gap between European and American national emission standards are Big. It is expected that the emission standards will be more stringent in the future, and tightening the soot emission standards below 30mg/m3 will accelerate the industrial dust removal equipment from the lower efficiency dust collector to the newer dust collector. China Environmental Protection Machinery Association predicts that the demand for bag filters in China will be about 40 billion yuan within five years from 2015.
Industry analysis:
With the increasingly strict environmental protection restrictions, the market demand for dust removal equipment has been continuously expanded. For example, the market space for dust collectors in domestic thermal power plants is currently around 8 billion yuan, and the transformation market is expected to reach 2 billion to 3 billion yuan in the next 2-3 years. scale. The low-efficiency electrostatic precipitators installed in more than 90% of the 800 million kilowatt thermal power units that have been put into operation in China have gradually changed to a new type of dust collector. The potential market space is 40 billion yuan, five times that of the current market.
China's emission standards are increasing day by day, especially the requirements for particle control are becoming more and more strict. At the same time, the research and development of industrial dust collectors are promoted, resulting in the rapid development of high-efficiency dust removal equipment, dust collector manufacturing and general contracting industry and high temperature. The filter material industry will directly benefit.
Stainless Steel Pipe,Ss Pipe,Stainless Steel Pipe Fittings,Stainless Steel Fittings
CHINA·SNGONG FLANGE MANUFACTURING CO., LTD. , https://www.sngonges.com