It is understood that China's nitrogenous fertilizer industry most of the intermittent fixed-bed gasification technology. The high energy consumption, serious pollution, and demanding of raw materials. With this technique, the nitrogen of coal consumption in China, accounting for 87% of the nitrogen raw coal to anthracite. While only 18 percent of China's coal output of anthracite, National anthracite supply is very tight. With the sharp rise in energy prices, nitrogen fertilizer business in the face of increasingly severe coal supply situation, it is also faced with the predicament of rising production costs, most companies have been at a loss edge. 

In this case, a lot of nitrogen fertilizer business began to consider the use of new coal gasifier technology roadmap transformation of raw materials, especially the use of pulverized coal gasifier, a new coal slurry gasifier. It is understood that, compared with the fixed bed gasification technology, new coal gasification technology in energy saving and environmental protection advantages. Compared with the conventional atmospheric pressure fixed-bed gasifier, in the same coal raw materials, advanced coal gasification technology enables the synthesis of ammonia per ton of product energy consumption an average of 0.22 tons of standard coal; high temperature gasification temperature of 1400 ℃, the new coal gasifier, organic pollutants will be completely decomposed, coal range is also greatly broadened. 

However, relative to atmospheric pressure fixed bed coal gasifier, a new gasifier. Thus, the domestic institutions are being developed to investment lower the gasifier. Aerospace furnace inventor, Aerospace Long March Chemical Engineering Co., Ltd. Technical Director THE CHEMICAL briefed reporters, they are currently developing the 1.0 MPa to 1.5 MPa atmospheric pressure fixed bed overall rehabilitation programs, and transformation of nitrogen raw material route. The new gasifier using the program, and coal to transform Section do not require the transformation from raw materials into a diameter of 2.8 m investment than the gasifier can save 60%. (Zhang Xinggang)