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PDF(791 KB)
钙化合物在煤热解过程中的作用
Effect of calcium compounds on pyrolysis of coals
煤热解联产焦炭、焦油和煤气，是煤化工的重要分支。为了提高焦油和煤气的品质及产率，国内外研究了多种催化剂对煤热解过程的影响，大量文献表明，含钙化合物可以催化焦油裂解、提高焦油品质和煤气中高附加值组分（如H2和CO）的产率。本文基于近30年来的文献数据，从钙化合物对煤热解产物的收率、组成以及性质的影响方面展开评述，分析了钙化合物对煤热解过程的作用机理、对S和N迁移的影响，最后提出了需要进一步解决的问题。
Coal pyrolysis has been employed for more than a century to produce coke, tar and coal gas. To enhance the quality of the tar and gas and to increase their yields many researches were carried out on catalysis of coal pyrolysis. A notable trend among these studies is the role of calcium compounds, which were found to catalyze tar into lighter fractions and gases of higher market value, reduce S and N contents in the products,and overcome operation problems. This article reviews the developments made and knowledge gained in past decades on the subject, analyzes the mechanisms involved, and attempts to show the researches needed in the future.
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