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For the "Eleventh Five-Year" furnace renovation project, efficient energy-saving rotary kiln
At present, the country in the use of industrial boilers to maintain more than 50 million units, about 1.8 million tons of steam / hour. About 48 million coal-fired boilers, accounting for about 85% of the total capacity of industrial boilers, the average capacity of about 3.4 tons of steam / hour, of which 20 tons of steam ton / hour more than 80%. 113 air pollution control key cities in the coal-fired industrial boilers 24 million units, 900,000 tons of steam ton / hour, accounting for 1/2 of the country. Industrial boilers are mainly used for factory power, building heating and other fields, the annual consumption of coal about 400 million tons.
China's coal-fired industrial boiler efficiency is low, heavy pollution, energy-saving potential. Boiler design efficiency of 72% -80%, the average operating efficiency of about 60% -65%, the average operating efficiency than the advanced level of foreign low 15-20 percentage points; annual emissions of about 2 million tons of soot, sulfur dioxide is about 600 million tons, Second to the second largest soot type of thermal power plant pollution sources. The main problems are: single boiler capacity is small, equipment aging; boiler average load less than 65%, "big horse car"; boiler automatic control level is low, low quality combustion equipment and auxiliary equipment; use of coal Lack of skilled professional operators; pollution control facilities simple, most do not install or not run desulfurization device, serious pollution emissions; energy-saving supervision and management of the absence of such as.
The main problems of industrial furnaces are: low level of technology, low equipment, small scale; high energy consumption, most lack of pollution control facilities, serious pollution; low management and management, extensive management; lack of energy efficiency standards and energy conservation policies.
New rotary kiln update, alternative inefficient boiler: the use of new efficient boiler room system to improve boiler thermal efficiency. Reconstruction of the existing boiler room system: for the existing boiler owners auxiliary mismatch, automation and system efficiency issues, the integration of existing advanced technology, transformation of the existing boiler room system to improve the overall efficiency of the boiler room. In view of the current low quality coal, coal is not stable, and the boiler does not match the low efficiency of the problem, the production of energy efficient rotary kiln mainly focus on the northern region, the construction of regional boiler dedicated.