Successful first ignition, feeding, and commissioning of the gasifier in Dahuahua Group’s ammonia synthesis plant

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This post was last edited by Qingfeng Liu on 2009-10-13 at 08:53. Ammonia synthesis project: Successful first ignition of the gasification unit. At 18:37 on September 27, 2009, and amid great anticipation from many people, the gasification unit of the Matsuji Island ammonia synthesis project was successfully ignited for the first time, producing stable and high-quality syngas – a valuable gift for the country’s 60th anniversary. The completion of this milestone marks a significant breakthrough in the highly anticipated project to convert the ammonia synthesis plant from using oil to coal – a project that has required three years of hard work by the project team and all involved units; the construction of this facility has now reached its intended goals. The ammonia synthesis gasification unit that was successfully commissioned this time utilizes the 8.7 MPa slurry coal gasification patent technology introduced from GE in the United States. It employs the internationally recognized GE clean gasification technology as well as Linde’s low-temperature methanol washing purification technology, making it highly environmentally friendly. It involves using pressurized water-coal slurry along with oxygen in controlled amounts to carry out a partial oxidation reaction in a gasifier, thereby producing raw gas, which is then subjected to conversion, purification, and synthesis to ultimately yield gaseous and liquid ammonia products. After commissioning, the gasifier operates in a two-in-one-backup configuration; two sets of high-pressure, medium-pressure, low-pressure, and vacuum flash systems are used to treat the black water emitted by the gasifier, ensuring stability while also being energy-efficient and environmentally friendly. Designed by Hualu Technology Co., Ltd., and constructed by Shisan Huajian. It is understood that this set of equipment is the second set in China to be successfully put into operation after Nanhua Company. To date, the gasification unit has been operating smoothly; as of 7 p.m. on October 4, it had run continuously for 168 hours, setting a new record for the first operation of a gasification unit of this type. The syngas, slag, ash and other products as well as by-products produced all meet the design requirements. The syngas produced there completed the catalyst sulfidation step in the shift process on October 2, thereby establishing the shift process flow and enabling progress toward the subsequent purification and synthesis steps. The entire project team is fully prepared and making every effort to make one last attempt to produce qualified liquid and gaseous ammonia products as soon as possible.