Process flow diagram and operating procedures for coal-based ethanol

The process flow for coal-based ethanol is as follows: 1. Coal sorting: Removing impurities from raw coal to obtain pure coal material. 2. Coal gasification: Coal is fed into a gasifier along with steam and oxygen, where it is heated and circulated to undergo thermochemical reactions, resulting in the production of syngas. 3. Syngas conversion: Converting syngas into ethanol using catalytic reactions. 4. Separation and purification: The reaction products are subjected to processes such as separation, purification, and refinement to obtain ethanol of high purity. The operating procedures are as follows: 1. Coal selection: Sort, clean, and dry the raw coal in accordance with the requirements regarding coal quality. 2. Gasification: Control the temperature, pressure, and gas ratios of the gasification reaction to ensure its stability and efficiency. 3. Syngas conversion: By controlling the reaction temperature, pressure, as well as the type and amount of catalyst, it is possible to regulate the reaction rate, product selectivity, and yield. 4. Separation and purification: Appropriate separation, purification, and refinement methods such as distillation, extraction, and crystallization are used to obtain ethanol products of high purity. For information on coal-based ethanol, you can refer to the following websites and publications: 1. Official website of the Coal-Based Ethanol Research Institute at the University of Science and Technology of China: http://iem.ustc.edu.cn/ 2. Relevant papers published in the journal “Energy Engineering”: http://www.wanfangdata.com.cn/search/list?q=%E7%85%A4%E5%9F%BA%E4%B9%99%E9%86%87 3. Relevant articles published in the journal “Chemical Industry Progress”: http://www.wanfangdata.com.cn/search/list?q=%E7%85%A4%E5%9F%BA%E4%B9%99%E9%86%87 4. Technical report on coal-based ethanol issued by the International Energy Agency (IEA): https://www.iea.org/reports/coal-based-ethanol