煤气化制甲醇,粗合成气碳多氢少,不满足甲醇合成的最佳氢碳比。为了弥补氢气量的不足,部分粗合成气需要经变换制氢。而采用天然气一段蒸汽催化转化制合成气,其中氢多碳少,两种技术联合正好弥补了煤气化制甲醇的缺陷,提高了氢气的利用率,减少了煤基合成气的变换量,达到了节能减排的目的。 Coal gasification of methanol, crude synthesis gas less hydrogen gas, methanol synthesis does not meet the best hydrogen-carbon ratio. In order to compensate for the lack of hydrogen, some of the raw syngas needs to be converted to hydrogen. The use of a section of natural gas steam catalytic conversion of syngas, in which less hydrogen and more carbon, the combination of the two technologies just make up for the lack of methanol gasification and improve the utilization of hydrogen, reducing the conversion of coal-based syngas reached The purpose of energy-saving emission reduction.