The chemical industry process is mainly divided into three steps: raw material processing, chemical reaction, and product refining. Among them, the chemical reaction is a key step, and the reaction is carried out under conditions of a certain temperature and pressure, and a large amount of steam of different qualities is required to be heated in the processes of polymerization, condensation, drying, melting, molding, and the like. With the promulgation of the new "Air Pollution Emission Standards", small coal stoves will be gradually phased out, replaced by low-emission gas stoves, fluidized beds and biomass boilers.
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