Pollutants emission effects have been especially considered in the study on steam power system economic operation, and accordingly, mathematic models are recommended for pollutants emission.
在蒸汽动力系统运行的研究中引入了污染物排放问题，并建立了各污染物的数学模型。
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The carbon dioxide emission sources of a refinery are typically widely distributed and large amounts of carbon dioxide will be emitted in the processes of supplying heat, steam and electricity.
The method has the advantages that the method recycles the prior externally-exhausted steam and achieves the aims of energy conservation, emission reduction and consumption reduction well.