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Ningxia Baofeng Energy’s 2.2 million tons per year methanol synthesis unit successfully produced MTO-grade methanol. Author/Source: Coal Chemical Engineering 114 Forum. Date: May 31, 2020. Clicks: 42. At 2 a.m. on May 29, the 2.2 million tons per year methanol synthesis unit part of Ningxia Baofeng Energy Group Co., Ltd.’s project for producing 600,000 tons per year of olefins through coke gasification, constructed by China National Sixth Engineering Corporation, successfully produced MTO-grade methanol. Liuhua Construction is responsible for the entire construction process of the methanol project, with its third subsidiary undertaking the construction of the air separation unit and the synthesis unit as part of this project. This time, high-quality MTO-grade methanol was successfully produced, with a methanol content of ≥95%, potassium and sodium ion levels of <0.1 ppm, and a permanganate index of ≥18 minutes, all meeting the design specifications. The methanol synthesis plant utilizes the British Davy methanol synthesis technology, with all equipment being domestically produced. In particular, the Davy patented methanol synthesis tower was manufactured in China for the first time. After startup trials, the various units of the methanol synthesis plant operated stably, successfully achieving the goal of completing the trial operation of the methanol synthesis facility. In October 2019, the latter stage of the project for producing 600,000 tons per year of olefins via coke gasification, namely the project for producing 600,000 tons per year of olefins from methanol, was put into operation. On April 9, 2020, the 105,000 cubic meter per day air separation unit of Baofeng Energy was successfully commissioned for the first time. Unit 2 of the 105,000 cubic meter per day air separation compressor unit – the largest domestically produced compressor unit of its kind, designed and manufactured by SHENGU Group – began producing high-quality oxygen and nitrogen products at 9:08 a.m. on that day. At 10 a.m. on April 11, 2020, the first ignition of Boiler Unit No. 9 in the power station project of the Ningxia Baofeng Coke Gasification to Olefins project, constructed by China National Chemical Engineering Corporation Sixth Construction Co., Ltd., was successfully completed. The construction site for the 600,000 tons per year olefin production facility via coke gasification by Ningxia Baofeng Energy Group Co., Ltd. is Area A of the Linhe Comprehensive Project Zone in the Ningdong Energy and Chemical Industry Base. The total investment in this project amounts to 1,527,887 million yuan, of which 1,429,736 million yuan is allocated to construction costs. The scale of the project includes a 2.2 million tons per year coke gasification unit for methanol production, a 600,000 tons per year methanol-to-olefins unit, a 300,000 tons per year polyethylene plant, a 300,000 tons per year polypropylene plant, as well as various supporting utility systems and auxiliary facilities. There are changes to the construction details of the project at Ningxia Baofeng Energy Group Co., Ltd. for the production of 600,000 tons per year of olefins via coke gasification; the process optimization involves changing the gasification units from 30 fixed-bed gasifiers to 6 fluidized-bed gasifiers ； The air separation unit has been changed from 3 sets of 80,000 Nm3/h to 2 sets of 105,000 Nm3/h; the cryogenic separation unit has been removed ； The low-temperature methanol washing unit, refrigeration station unit, sulfur recovery unit, and methanol synthesis and compression unit have all been changed from 2 sets to 1 set ； The power station was changed from 4 boilers of 500 t/h to 3 boilers of 420 t/h.