Dzl Horizontal Special Design Biomass Hot Water Boiler
The solid fuel fired and biomass fired boilers are mainly used in hotel, hospital, university, central heating, refineries, utilities, petrochemical, chemical, paper and pulp, steel and iron, food processing, power station, and other major processing industries. Solid fuel boiler is chain grate type boiler burning coal, biomass or mix-firing both. It adopts membrane water wall, with economizer in the rear of boiler. High combustion efficiency, energy saving and low emission. Three-pass tube design incorporating a wet back turnaround that eliminates the need for rear door refractory. Larger steam disengagement area providing high quality steam, larger steam storage capability for quicker response to sudden steam demand. Equipped with PLC-based control system to realize automatic operating in start-up, standby and shutdown control Designed, constructed and stamped in accordance with the requirements of the American Society of Mechanical Engineers.
Such boilers are mainly fueled by natural gas, oil, gas, etc. For customers, the fuel used in such boilers is relatively high in price relative to fuels such as coal and biomass. However, the boiler is easy to use and the fuel is transported by pipeline without storage. Biomass fuels, and fuels such as coal, need to be processed in advance when used in boilers, and because of the large amount of consumption, fuel transportation, and fuel storage are not small expenses. However, the oil and gas water boilers produced by ZG boiler do not need these additional inputs.
There are build on the control of emissions of nitrogen oxides boiler in order to achieve NOx emissions from combustion boilers of less than 30mg / m3, reached the world advanced level. Austrian far low nitrogen fuel gas boiler Staged Combustion Process of the invention into three regions in the furnace combustion techniques, primary combustion zone into the small portion of the fuel, the fuel required for the combustion air into the furnace in stages, the air volume of 80% left and right into the main combustion zone, the primary combustion zone of the upper (downstream of the flame) of the fuel injected into the secondary combustion and the formation of Carrying out a reducing atmosphere in the third zone into the combustion air required Further, complete burnout process. To create a discharge for the control of nitrogen oxides boiler fuel and air in order to achieve staged combustion gas boilers achieve emission limits is very basic configuration of environmental protection facilities, comprising an electrostatic precipitator or bag filter, gas boiler efficient desulfurization apparatus, a selective catalytic reduction (SCR) or selective non-catalytic reduction (SNCR) and the like denitration apparatus. All aspects of air pollution sources to install automatic monitoring facilities, steam boilers and networking with the environmental protection department, install a distributed control system (DCS system), real-time monitoring of gas boiler pollutant emissions. All-premixed combustion technology implementation of a number of Austrian far improved combustion technology after years of build have on the control of emissions of nitrogen oxides boiler fuel and air in order to achieve staged combustion. This technique can be gas boiler NOx emissions chain by 70% -60%. At present, to solve pollution problems of small and medium industrial gas boilers have four energy saving way. First, clean fuels covered by the remaining gas boilers, boiler premix combustion technology implementation of a number of improved combustion technology after years of Austrian far as natural gas boilers, biomass boilers and so on; Second, the rising water boiler technology.
To further reduce emissions, improve air quality, the Shanghai Municipal Government put forward the views of accelerating the implementation of small and medium sized boilers mentioned standard transformation of the urban area. Details are as follows.
As of 2020 before the end of September, the city mentioned standard transformation is completed with small boilers. Among them, the city center before the end of 2019 to complete the transformation mentioned standard, to Shanghai, "Boiler Air Pollutants Emission Standards" (DB31 / 3872018) requirements, to encourage compliance in advance.
In January 2018 - September 2020 period, complete boiler mentioned standard transformation and acceptance, discharge standards under the "50%, 75%" and other major conditions of the city's small and medium-load boiler unit.
City, District, together, support the implementation of fiscal policy. Giving special one-off subsidies, municipal and district levels in line with the financial support of the above-mentioned range. Specific binding transformation of the former boiler capacity and completion time, be supported in accordance with the following criteria: