Popular Science: Common lpg fired fire tube boiler combustion: Currently in the boiler industry, there are three main combustion. Xiao Bian access to a wealth of information, a brief introduction and comparative advantages and disadvantages of these three combustion mode, allowing you to more quickly grasp the knowledge combustion boiler.
Biomass coal steam boiler
Yangzhou City in Jiangsu Province, the municipal government issued a notice of 2019 annual remediation tasks lpg fired fire tube boiler, with the text published a list of boiler regulation, as follows.
3, the nitrogen gas boiler oxide (NOx) emission limit is not higher than 50 mg / m transformation, in accordance with other indicators of "boiler air emission standards" in the gas-fired boiler particularly performed emission limits.
(1) prohibits blended with other fuels such as coal, bags and other supporting efficient dust removal facilities, and effectively discharge standards. Emission standards in accordance with "boiler air emission standards" in coal-fired boilers particularly performed emission limits.
Full implementation of the above steam 2,65 t / h coal-fired boiler transformation ultra-low emission, soot, sulfur dioxide, nitrogen oxides, respectively, 10 mg / m, 35 mg / m, 50 mg / cubic meter.
3, disable all kinds of close small coal-fired facilities (tea boiler and furnace operating coal-fired stove, rural production, aquaculture and other coal-fired facilities), switching to natural gas, electricity, solar and other clean energy. In remote rural areas, could be replaced by forming biomass as a fuel, but must use a professional boiler, supporting efficient dust removal facilities, to ensure that pollutant discharge standards, emissions standards refer to "boiler air pollutant emission standards" in particular coal-fired boiler emission limits carried out.
4, a low nitrogen gas boiler and treatment for the transformation, the installation of low NOx combustion by the low NOx combustion mode, etc., to ensure that the nitrogen oxide emission limit is not higher than 50 mg / m. Other indicators according to "boiler air emission standards" in the gas-fired boiler particularly performed emission limits.
5, forming a comprehensive remediation biomass fuel boilers, biomass fired boiler clean-up does not meet the special requirements of the boiler, not supporting a biomass fired boiler emissions and efficient dust removal facilities of non-compliance. To meet the special requirements of the boiler and supporting efficient dust removal facilities, the establishment of accounting and retain more than one year, emission standards refer to "boiler air pollutant emission standards" emission limits in particular the implementation of coal-fired boilers. More than 10 tons of steam installation of gas-line monitoring instruments, and networking with the environmental protection department. Located in the city built-up area forming ultra-low emission biomass boilers implement reform.
6, bulk coal sales within the city limits are all clear according to the law, the use of bulk coal user implementation of the "coal to electricity" for street vendors and other "coal to gas" campaign, a pin number management. At the same time, prohibiting the establishment of long-term supervision mechanism bulk coal, non-bulk coal inflows.
The commonly used pressure controller and electric contact pressure gauge can make steam pressure overpressure alarm and cut off burner when it reaches the limit, the pressure controller can adjust single fire or double fire combustion according to the actual operating pressure. For large-scale burners, the fuel quantity can be adjusted according to the pressure, and the pressure stable safety valve is always the last line of defense in lpg fired fire tube boiler protection. When the boiler pressure exceeds the limit, According to the design of safety valve setting pressure, exhaust steam pressure to ensure normal operation of the boiler. Temperature protection is an important procedure in the process of boiler safe operation, especially for steam boiler temperature regulation and protection; at the same time, when the hot water boiler is overheated, it can achieve the regulation and protection function. The commonly used temperature protection device for boiler is bimetallic temperature controller.