Project Site: Shandong, China
Equipment: 4 MTW215 European Mills (Secondary Phase) and other auxiliary machines used for feeding, powder preparation, dust removal, powder collection, transportation, storage and nitrogen protection
Finished Product: Coal powder
Input Size: ＜50mm
Output Size: 200meshes, D80
The energy company is a research and development base focusing on the efficient and clean use of coal in Shandong Province. The technology of micro coal atomization, its result of independent research and development, can boost the transformation and upgrading of coal industry effectively. The so-called micro coal refers to the coal powder meeting the standard of fineness after coal is ground by mills. Through the technology of micro coal atomization, the fuel can mix with air fully to form a rotary vortex and then the fuel enters the industrial boilers and burns in suspension inside. The use of thermal system, monitoring and controlling system and exhaust purifying system achieves the efficient combustion with emissions reaching the emission standards of gas. Except for the increase of input-output ratio, the clean coal production which used our 4 MTW215 European Mill (Secondary Phase) and other auxiliary machines reduced the emission of dust, SO2 and nitrogen oxides greatly.
(1）Depression of Coal Enterprises
According to the report released by China National Coal Association, over 70% coal companies are suffering financial losses. The operation faces difficulties and the situation of this industry is severe. Meanwhile, China actively advocates and supports the market-oriented reform and structural management in coal industry by releasing related policies. Under the condition of balancing supply and demand, it is urgent for coal industry to upgrade.
(2) Support of National Policies
The Action Plan of Clean Use of Coal (2015-2020) released by China National Energy Bureau clearly stipulates that by 2020 the use ratio of efficient boilers must reach 50% at least in some areas. According to the fifth plenary of CPC’s 18th Central Committee, the clean use of fossil energy must be put on the schedule, coal included. So it can be concluded that the promotion of efficient and environmental coal powder boiler will be a key energy-saving technology in China.
(3) Support from Local Government
To stimulate transformation and upgrading, Shandong government subsidized some major PPP projects. Meanwhile, Shandong province launched an action plan (2015-2018) to promote efficient and environmental coal powder boilers. The plan showed that the efficient coal powder boilers can be used for heat supply and steam supply and therefore the boilers should be popularized and applied as soon as possible.
(4) Environmental Pressure
Using coal briquette as the fuel, traditional industrial boilers discharge a great deal of dust and contaminant. However the use of coal powder makes local area free from pollution with all emissions below the national standards. The emission of dust is ≤30mg/m3, SO2 ≤100mg/m3, nitrogen oxides ≤200mg/m3.
(5) Economic and Environmental Profits Brought by Combustion of Coal Powder
The use of coal powder boilers can burn over 98% of coal powder. Meanwhile, compared to the traditional boilers, the coal powder boilers can save energy by over 30% while heat efficiency keeps above 90%. The operation costs can be reduced by 20-30%. What’s more, the unit cost of fuel of coal powder boilers occupies one third of that of gas boilers only.
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