Article source: China Chemical Industry News
Report from this newspaper (Reporter Zhang Xingang) Baling Petrochemical has implemented technical transformation of Shell's pulverized coal gasification unit, changing the high water gas shift process to a low water gas process. It has been one and a half years since the device was put into operation in June 2010. The results show that it can It saves at least 30 tons/hour of medium-pressure steam and reduces the amount of low-pressure steam vented accordingly, achieving significant economic and social benefits.
The 500,000 tons/year ammonia synthesis plant of Sinopec Baling Branch is the first Shell pulverized coal gasification ammonia production plant built in my country. In order to avoid the occurrence of methanation side reactions, the initial conversion section was designed with a high water/gas process. However, there have always been problems such as rapid deactivation of the preconversion furnace catalyst, unstable operation, high steam consumption, and low gas content at the outlet of the low conversion furnace that did not meet the design specifications. question. To this end, Qingdao Lianxin Chemical Co., Ltd. and other units have successfully developed a new low-water/gas-sulfur-tolerant shift process for pulverized coal gasification and the QDB-05 catalyst, which not only solved the problem of high-concentration coal gas feed gas shift reaction, but also stabilized the conversion operation, and significantly reduced the steam consumption and process condensate emissions, achieving innovation and breakthrough in sulfur-resistant conversion technology, filling the gaps at home and abroad.
