Sulfur dioxide treatment technology for coal-fired industrial boilers?

What is the specific content of sulfur dioxide treatment technology for coal-fired industrial boilers? Zhong Da Consulting will answer your questions below.

Air purification technology: 1 introduction [1-3]

Since the early 1980s, with the sustained and rapid development of China's economy, the acceleration of chemical industry and the increasing population, coal consumption has greatly increased at an annual rate of 3-9%, and China's atmospheric environment has been seriously polluted, especially by SO2 and soot, making it the most polluted country in the world. Over the years, the average annual daily concentration of SO2 above 1/3 in China's annual assessment has exceeded the national secondary air quality standard. Under the action of SO2 pollution, acid rain pollution in China has become more and more serious, becoming the third largest acid rain area in the world. In the future, the contradiction between the substantial increase of coal and the continuous increase of SO2 emissions is not optimistic. The serious pollution of sulfur dioxide to the atmospheric environment has caused environmental safety problems in China and caused considerable economic losses to people, ecological environment, economic development and social progress.

Through the analysis of the sources of pollutants in the atmospheric environment, it shows that the air pollution in China belongs to soot pollution, in which SO2, soot and other pollutants are mainly produced by coal burning. SO2 and soot emitted by coal combustion account for 90% and 70% of the total SO2 and soot emissions respectively, CO2 emitted by coal combustion accounts for 85% of the total CO2 emissions, and CO2 emitted by coal-fired industrial boilers accounts for 30% of the total CO2 emissions. It can be seen that it is of great significance to control the emission of SO2 and soot from coal combustion to control air pollution in China. The main sources of SO2 emission from coal combustion in China are coal-fired power plants, coal-fired industrial boilers, coal-fired industrial kilns and civil small coal stoves, accounting for 40%, 25%, 5% and 20% of the total SO2 emission from coal combustion respectively. It can be seen that controlling SO2 pollution in coal-fired industrial boilers is of great significance to controlling SO2 pollution in China's atmosphere. Coal-fired industrial boilers have the characteristics of great difficulty in sulfur dioxide pollution control technology and large economic investment, and have become the focus of attention of the whole society.

Over the years, the practice of air pollution control in China shows that it is difficult to control SO2 pollution in the air of coal-fired industrial boilers by traditional methods, such as simply applying dust removal and technical equipment. Only by starting with the atmospheric environmental problems, adopting clean fuels and eliminating small boilers,

Only by adopting clean combustion technology of industrial sulfur-fixed briquette, coal water slurry and circulating fluidized bed and a set of scientific and comprehensive prevention and control technologies can SO2 pollution in coal-fired industrial boilers be prevented simply, economically and effectively. This set of prevention and control technology has high combustion efficiency, generally around 90%; High thermal efficiency, generally above 80%; Both the concentration of soot and SO2 meet the requirements of Emission Standard of Air Pollutants for Boilers, which greatly reduces the waste of resources and has good economic, environmental and social benefits. It is the best substitute technology for SO2 pollution prevention of coal-fired industrial boilers in China at present and in the future. Only by adopting this set of comprehensive pollution prevention and control technology can China's air pollution be expected to be prevented. Even with the sustained and rapid economic development, the air pollution in China can be prevented, which is essentially incomparable with the traditional pollution prevention technology in the past. The implementation of this comprehensive air pollution prevention and control technology in China is of great significance and far-reaching influence on the sustainable development of China's economy.

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