In October 2008, the QDB series catalyst was successfully started up in the 150,000 tons per year methanol conversion unit of Anhui Linquan Chemical Co., Ltd. As the unit adopts the domestic pulverized coal technology HT-L pulverized coal pressurized gasification, the CO content in the raw coal gas is as high as 70%, and the water/gas ratio is as high as 1.1, the conversion load is high, and the catalyst bed reaction depth and bed hot spots are not easy to control. Based on the design concept and start-up experience of the "Guangxi Liuzhou" low water/gas ammonia production and "Henan Kaixiang" low water/gas methanol conversion unit, our company proposed to control the first conversion furnace conversion reaction depth and bed hot spot temperature by adjusting the water/gas ratio and inlet temperature in the raw gas. The industrial operation results prove that it is completely feasible to use the QDB-05/QDB-04 catalyst produced by Qingdao Lianxin Chemical Co., Ltd. and the method of adjusting the water/gas scheme to control the reaction depth and bed hot spot temperature to produce methanol from process gas with high CO content and high water content. When the load is 50%, the temperature of each hot spot in the bed does not exceed 450℃. The operation is stable, the indicators are easy to adjust, and there is no methanogenic side reaction during the conversion process.
Link: China Chemical Industry News reported that the low water/gas sulfur-resistant conversion process was successfully used in the "aerospace furnace"
