"People's Republic of China Air Pollution Prevention Law" the latest revision with effect from January 1st, 2016, on which the provisions of section "Boiler Air Pollutants Emission Standards" (GB13271-2014): Since July 1st, 2016, all fuel coal boilers are required to fulfill the laws and regulations of new emission standards, China requires a comprehensive remediation of the small coal-fired boilers, and accelerates the transformation projects of desulfurization and denitrification, dust of the key industries,. Then, in all parts of China, environmental infrastructure constructions have been constantly promoted, eliminate the backward production capacity on focus of the environmental protection, to promote economic development and structural transformation.

 

Energy-saving boiler, is a technology which can improve the thermal efficiency of the boiler to 70% -80%, and at the same time save coal combustion of 10% -15%; it makes the automotive control to come true, through the boiler energy-saving information control system of boiler equipment induced draft fan, blower, grate, pumps and other parts of, and therefore to achieve enhanced combustion, full combustion or even complete combustion. Boiler exhaust gas contains large amounts of carbon dioxide, nitrogen dioxide, sulfur dioxide, and even the products of incomplete combustion of carbon monoxide, nitric oxide and other toxic gases. Scientific proofed that even through carbon dioxide does not directly cause air pollution, the excess will affect atmospheric environment to cause the greenhouse effect.

 

The removal of nitrogen dioxide in the coal-fired boiler exhaust in industrial usually uses WO₃ denitration catalyst, and SCR denitration system is commonly used. Since WO₃ plays the main role of anti-vulcanization, poisoning resistance (alkali metal poisoning, etc.) and so on in the denitration catalyst; at the same time, it can enhance the temperature adaptability of the carrier--titanium dioxide, avoid the carrier sintered caused by instantaneous high temperature, and thus play a role in anti-vector sintering. The abandon using of coal is the major cause of air pollution, experts pointed out that the green development conservation of boiler energy saving and emission reducing can effectively promote to improve the quality of air, therefore, WO₃ will play an effective influence to make emissions meet the national standards.