Traditional Culture Encyclopedia - Weather inquiry - What is the problem reflected by the frequent smog weather?
What is the problem reflected by the frequent smog weather?
Although the mechanism of smog is still controversial, the widespread use of industrial boilers is undoubtedly a very important one. In order to control air pollution, in recent years, the state has issued many policies and guiding opinions on the control of industrial coal-fired boilers, which are listed as follows:
The Action Plan for the Prevention and Control of Air Pollution (referred to as "National Ten Articles" in the State Council in September of 20 13) requires that coal-fired boilers with a capacity of 18 tons and below will be basically eliminated by 20 17, and new coal-fired boilers with a capacity of 20 tons and below will be prohibited.
Notice on printing and distributing the implementation plan of comprehensive improvement project of energy saving and environmental protection for coal-fired boilers
At the end of 20 14, the National Development and Reform Commission, the Ministry of Environmental Protection, the Ministry of Finance, the General Administration of Quality Supervision, Inspection and Quarantine, the Ministry of Industry and Information Technology, the State Administration of Taxation and the National Energy Administration jointly issued the Notice on Printing and Distributing the Implementation Plan for the Comprehensive Improvement Project of Energy Conservation and Environmental Protection of Coal-fired Boilers (245 1 [20 14]), which was implemented simultaneously. Through the interpretation of the plan, we can clearly get the following information:
1) By 20 18, it is planned to popularize 500,000 tons of high-efficiency boilers and eliminate backward coal-fired boilers.
400,000 tons of steam to complete the energy-saving transformation of 400,000 tons of coal-fired boilers;
2) The average operating efficiency of coal-fired industrial boilers should be increased by 6 percentage points on the basis of 20 13,
Form an energy-saving capacity of 40 million tons of standard coal per year; 6,543,800 tons of soot, 6,543,800 tons of sulfur dioxide and 240,000 tons of nitrogen oxides were reduced;
3) It is forbidden to build new coal-fired boilers with a capacity of less than 20 tons/hour in the built-up areas of cities at prefecture level and above.
In principle, no new coal-fired boilers of10t/h and below will be built in other areas. In principle, no new coal-fired boilers will be built in the built-up areas of cities above the prefecture level in Beijing, Tianjin, Hebei, Shanxi and Shandong;
4) Newly produced and installed coal-fired boilers with a capacity of 20 tons/hour and above shall be equipped with efficient desulfurization devices.
And efficient dust removal facilities.
As can be seen from the above policy interpretation, first, the pace of governance of existing coal-fired boilers has been greatly accelerated. Similar to thermal power transformation, the elimination targets of this plan are those coal-fired boilers with small capacity and backward technology. It can be said that the transformation of the old boiler in operation is imminent. Second, the construction of new coal-fired boilers will be greatly restricted. Even if the threshold for new coal-fired boilers is increasing, their operation will be strictly controlled.
The above is at the national level, and specific regions have documents issued by their respective regional governments and competent departments.
According to the Action Plan for the Prevention and Control of Air Pollution in Ten Provinces and Cities, by 20 17 years, small coal-fired boilers below 10 tons will be eliminated, and new boilers must be more than 20 tons. By 2020, no new coal-fired boilers of less than 35 tons will be approved.
As the most serious air pollution area in China, Hebei Province is bound to be subjected to the strictest control, among which the control of coal-fired boilers bears the brunt.
Specific to each city depends on the specific documents of the local development and reform commission, environmental protection bureau and municipal government. Our company has an investment project of heating and gas supply in Baigou Park, which is particularly difficult to push at 20 13, because we are also coal-fired boilers, but the difference is that we are clean coal technology, but the local development and reform commission and environmental protection are very conservative, which can't blame them. After all, the pressure of political achievements is too great.
Now, after a period of implementation of measures such as dismantling and merging, reducing coal pressure and changing coal into gas, the serious pollution of boilers has been alleviated, because natural gas is really scarce and too expensive to use, and in turn, coal-fired boilers have to be considered, but the old coal-fired boilers can no longer be used, and boilers using clean coal combustion technology must be used to strengthen tail gas control. In fact, this kind of boiler can completely meet the environmental protection emission standards, even cleaner than gas boilers!
Since the release of the new emission standard of air pollutants for boilers (release draft GB13271-2014) last year, the approval of coal-fired boilers in various places has been shrinking, and the pollutant emission limit standards of coal-fired boilers in use and newly built at different times have been clearly defined. Various provinces and cities have successively issued local policies to strengthen the restrictions on coal-fired boilers.
For the general region, it is definitely impossible to reach the designated position in one step. In fact, many cities in North China, even central cities such as Shijiazhuang, still need to build coal-fired boilers. Why, because the natural gas pipeline network may not be in place, even if it is in place, ordinary users can't afford it.
What we are investigating now is that in all areas, if the emissions of coal-fired boilers do not exceed the standard, the EIA should still pass, and the rest depends on whether there are specific requirements of local governments, development and reform commissions, housing and construction departments, economic and information committees and special inspections.
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