The coal-fired steam power plant boilers is improved on the basis of absorbing the advantages of circulating fluidized bed boiler at home and abroad. By reducing the circulation rate, optimizing the structure of key parts and other measures, the defects such as boiler wear, coking blockage of the return device, high concentration of the original exhaust dust of the boiler and difficulty in discharging slag are effectively solved. The steam power plant boiler has more reasonable structure, better performance, safer and more reliable operation, which reduces the cost of equipment operation and maintenance to the greatest extent.
This series of CFB boiler is an energy-saving circulating fluidized bed combustion technology based on the reconfiguration of flow pattern. The coal-fired circulating fluidized bed boiler overcomes the two problems of high power consumption and wear in conventional circulating fluidized bed boiler plants. Plant power consumption can be reduced by at least 30%. At the same time, the reduction of boiler wear leads to the increase of boiler availability and the corresponding reduction of maintenance costs. This series of boiler combustion efficiency is high, because of the intense mass and heat exchange in the fluidized bed unburned coal particles through multiple cycles can increase its residence time in the furnace, is very conducive to fuel burnout.
DHX type coal fired boiler not only flammable bituminous coal, lignite and other flammable coal. It is also combustible with anthracite and other difficult coal burning, waste slag can be comprehensive utilization, slag carbon content is generally less than 2%, but also burn bark, garbage and other biomass fuel. The steam power plant boiler desulfurization rate of up to 80%–90% can be obtained with proper calcium to sulfur ratio and limestone particle size. At the same time, due to the lower combustion temperature and the use of graded air supply, the nitrogen oxides produced by this type of boiler during combustion are far lower than that of pulverized coal furnace, so its sulfur dioxide and nitrogen oxides emissions are lower.
This series of boiler products is guided by CFB map to reduce the effective stock of the fast bed. The invalid storage of the bubbling bed under the circulating bed was reduced appropriately with the restriction of large particle burnout. Avoid unnecessary fan energy consumption and heating surface wear caused by excess storage. In practice, the analysis of the material balance system in circulating fluidized bed shows that in order to improve the quality of the bed and reduce the amount of bed material, the concrete means can be as follows: improving the separation efficiency of the separator, improving the flow characteristics of the material return device, controlling the fuel strength to meet the design requirements, updating the design guidelines for heat transfer coefficient and combustion share distribution.
The coal fired steam power plant boilers effect of environmental protection and energy saving is remarkable, and the load adjustment range is wide. It is the first choice for urban central heating and industrial production, with high economic and environmental benefits. Mainly used in large central heating, production and supply of gas engineering or city, a variety of enterprise heating system. The product adopts a number of patented technologies, can run continuously for a long time, the failure rate is very low, flammable with anthracite, bituminous coal, lignite and coal gangue and other low caloric value fuel.
The steam power plant boiler adopt the special optimization design, subvert the traditional concept of smoke pollution treatment. This series of products run safely and reliably. Through the optimization of the heating surface in the furnace, the primary and secondary air, feeding device, not only improve the combustion efficiency, but also reduce the discharge of harmful substances such as NOx boiler outlet. Zozen Boilers specialize in producing various types of boiler products, our factory has been dedicated to providing customers with quality boiler service for many years, welcome to consult and purchase!