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摘要
以60万t/a甲醇制烯烃装置反应温度变化为基础，探讨了反应机理、催化剂性能与反应温度变化的关系，研究了反应温度在较窄区间内的变化对催化剂定碳、生焦率、乙烯/丙烯产物比、低碳烯烃选择性及副产物产量的影响，分析了反应温度与产品经济性的关系。结果表明，通过调节反应温度，维持双烯选择性微小变化，可以根据市场需求调节乙烯、丙烯选择性，从而按需调节乙烯/丙烯产物比；同时验证了实验室小试，结果与工业装置变化规律相符。
Abstract
Based on the change of reaction temperature in a 600,000 T/a methanol to olefin unit,the relationships between reaction mechanism,catalyst performance and reaction temperature change are studied,the effects of reaction temperature change in a narrow range on catalyst carbon determination,coke yield rate,ethylene to propylene production ratio,low-carbon olefin selectivity and by-product yield are studied,and the relationship between reaction temperature and product economy is also analyzed.It is shown that the selectivity of ethylene and propylene can be adjusted slightly according to the demand by adjusting the reaction temperature and thus the ethylene-propylene production ratio can be adjusted upon demand.At the same time,the laboratory test results are consistent with the same change law of industrial device.
关键词
甲醇制烯烃
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产品经济性
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选择性
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生焦率
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定碳
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乙丙比
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反应温度
Key words
methanol to olefins
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product economy
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selectivity
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coke yield rate
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carbon determination
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ethylene to propylene production ratio
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reaction temperature
甲醇制烯烃装置较窄反应温度区间下乙烯、丙烯产物比的变化规律研究[J].
现代化工, 2020, 40(12): 215-218 DOI:10.16606/j.cnki.issn0253-4320.2020.12.045
