Generally,the firing type coal dust fire with biomass for CFB price of 8 tph coal fire chain grate boiler is usually used to generate power in power plant.CFB boiler technology is a new type clean coal technology,while co-firing of biomass and certain types of waste with coal can be a good environmental and economic solution.

DZL series bagasses steam price of 8 tph coal fire chain grate boiler in distillery, its capacity is from 2 to 10 ton. This boiler can be used in smaller distillery. DZL series boiler can burn coal fuel, biomass fuel, and mixed fuels, so does SZL series and DHL series. DZL series chain grate boiler, its features like Inverted "α" arch furnace technology, combustion efficiency improved. It is a kind of fire tube boiler, automatic operation system, packaged boiler.

Biomass power generation is attracting more and more attention because its nearly net zero emission of carbon dioxide and its high fuel flexibility. Compared to coal, biomass has lowemission of SOx and particulate matters from the combustion process because its low sulphur and ash content. So biomass utilization played a significant role in the development of environmentally friendly society. Grate-fired price of 8 tph coal fire chain grate boiler has the advantages of lOW investment cost and high ruel flexibitity and it iS the main technology of biomass power generation and heat supply. In this paper, numerical similation of the flow field Was carried out with FLUENT software for double—grate biomass fired boiler, the results were validated by experimental data taken from a 1/30 scale cold model of the prototype.

Phase out coal-fired price of 8 tph coal fire chain grate 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.