New-generation technology boosts yields of ethylene and propylene by over 10%; China Coal Mengda DMTO passes 72-hour test

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The last edit to this post was made by liaifeng on 2018-9-3 at 09:12. New generation technologies increase the yield of ethylene and propylene by over 10%. The DMTO unit of China Coal Mengda has passed a 72-hour performance test. Author/Source: China Chemical Industry News; Date: 2016-09-01; Clicks: 87. On August 24, reporters learned from Inner Mongolia China Coal Mengda New Energy Chemical Co., Ltd. that the methanol-to-olefins (DMTO) unit of China Coal Mengda’s 600,000-ton coal-to-olefins project, which has attracted considerable attention in the industry, successfully passed a 72-hour performance test. Since the project began operation, its various technical parameters have been satisfactory, the product quality is acceptable, and it has been able to operate at full capacity for extended periods of time – which indicates that the next generation of methanol-to-olefins (DMTO) technology, having undergone numerous improvements, is becoming increasingly mature. From July 21 to 24, China Coal Mengda Company, in collaboration with DMTO technology patent holder Xinxing New Energy Technology Co., Ltd. and Sinopec Luoyang Engineering Co., Ltd., conducted performance evaluations on methanol-to-olefins plants that utilize DMTO technology. The performance assessment results show that the various parameters of this device are at the leading level among devices of similar type; all technical specifications meet the requirements specified in the contract, with some of them even exceeding those requirements and reaching a world-leading level. Professor Li Jilin, deputy dean of the School of Mining at Inner Mongolia University of Science and Technology, told reporters that this project is the 10th production line in China to adopt DMTO technology, and the technology used is the latest generation of DMTO technology developed independently in China. Its features, level of advancement, and breakthrough points are as follows: building on earlier technologies, it reprocesses the C4+ components in methanol-to-olefins products, thereby increasing the yields of ethylene and propylene by over 10%, resulting in a new generation of process technology for higher olefin production ； Its methanol conversion efficiency reaches 99.97%; only about 2.67 tons of methanol are required per ton of ethylene and propylene produced. Additionally, a single production unit is capable of processing 3 million tons of methanol per year ； This technology, having passed industrial performance assessments, demonstrates that China’s DMTO high-tech technology, which is at the forefront of the world, is becoming increasingly mature. According to Xu Zhengang, director of the Coal Chemical Engineering Research Institute of China National Coal Group, this facility is one of the key units in the 500,000-ton per year engineering plastics production project carried out by China National Coal Group Mengda New Energy Chemical Co., Ltd. The facility uses purchased pure methanol as raw material, with a designed methanol feed rate of 225 tons per hour (in pure form), which means that it can process 1.8 million tons of methanol per year (in pure form). In addition, the 600,000 tons per year olefin separation unit of this project utilizes the non-deep cooling separation technology from Rumus Corporation in the United States ； The 300,000 tons/year polyethylene plant utilizes Unipol patent technology from the American company Univation ； The 300,000 tons per year polypropylene plant utilizes Unipol patented technology from Dow Chemical Company in the United States. It is reported that the 600,000-ton coal-to-olefins project of China Coal Mengda is located in the Wushenzhao Chemical Industry Zone in Wushen Banner, Ordos City, Inner Mongolia, with a total investment of 10.4 billion yuan. Construction of the project began on March 25, 2013, and it successfully carried out its first trial run with material feeding on April 15, 2016.