Phase out coal-fired boilers, promote air pollution control is an important measure to improve the air quality of the environment. Zhangjiakou City, Hebei Province, according to the central and provincial government deployment requirements, in-depth launched out of control for coal-fired boilers, and comprehensively promote the city's 35 tons of steam / coal-fired boiler sales and less "clear" work to ensure the city's air quality improved and enhanced.
The phase-out of coal-fired boiler from the following three points.
First, the coal-fired boilers carry out a comprehensive investigation work.
Depth investigation and the remodeling phase out coal-fired boilers and "coal to electricity", "coal to gas" and so on, electricity consumption by verifying the number of boilers and eliminated the need for the transformation of gas to develop a control list in 2018 coal-fired boilers to natural gas, electricity security for the ability to determine the "coal to electricity", the number of "coal to gas," the boiler. Do a boiler in a table, as well as finishing the complete elimination of the transformation of the way, rectification, acceptance, responsibility for people's list, to lay the foundation for the next phase out coal-fired boilers governance.
Second, carry out the phase-out coal-fired boilers.
Carry out a comprehensive phase-out 35 tons of steam / hour and below the coal-fired boiler, stove, operating a small coal stove, the main urban built-up areas and the urban fringe, and built-up areas within the county Economic Development Zone range, a ban on new coal-fired boilers other regional ban on new 35 steam tons / hour and below the coal-fired boilers. For central heating central heating in the official website of the area covered, when not incorporated central heating, heating mode using a variety of propulsion power, natural gas, industrial waste heat utilization, and energy from the source to control pollution.
Third, strongly promote the boiler-depth treatment.
Focus on pollution control bulk coal, comprehensive transformation of the use of coal boilers and generators. Stoker addition, stoker furnace, over the remaining 65 tons of steam / h coal-fired boiler to complete the transformation process ultra-low emissions, the city above 35 t steam / hour is then mounted boiler line monitoring devices, and environmental protection authorities and networking, production facilities and quality facilities simultaneously, real-time monitoring.
For example, medium pressure feed water temperature of the boiler mostly heated to 172 deg.] C, typically heated to a high pressure furnace 215 ℃. Since the causes of the leakage of high pressure heater, water supply to the boiler feed water through the bypass when the high pressure splitting operation in the heater. After the temperature of the boiler feed water decreases, the fuel portion of the heat to be used to increase the water temperature.
After low-nitrogen gas boiler after transformation, the value of nitrogen oxide emissions can be as low as 30 mg / m or less, and fast boiler introduced more environmentally friendly ultra-low nitrogen gas boiler, NOx emissions may be less than 18 mg / cubic meter, recognized by the Central Authority, the national Tourism Administration and other units of the country prefix, also successfully applied the 2014 APEC meeting in Beijing.
Common hot excellent energy efficiency water boiler Accident (d) In addition to the common hot water boiler water, explosion, burst pipe incidents, there are other problems that may breed accidents, such as boiler deformation, improper operation, etc., may cause boiler accidents. (1) Boilers modification. If the hot water boiler operating at high load conditions, will vary with the corresponding deformation level of the furnace body and gas flow pressure expansion occurs. The reason for this situation is mostly ineffective in this one fireman or regulatory pressure gauge failure to form a miscarriage of justice. It is because of these improper handling, evolved into the explosion. (2) improper operation. Boiler cleaning inadequate, improper operation over the water, economizer operation obstruction and other issues that are not standardized, correct operation, can also cause accidents occur when running hot water boiler. In short, no matter what type of boiler accident, and whether these accidents are caused by whatever reason, will be on the normal operation of enterprises resulting in more or less the economy, and even personnel losses, for this situation, enterprises should improve the management mechanism and do security work, strengthen personnel training, possible trouble.