On January 29, a signing ceremony was held in Chengdu to finalize the contract for two invention patent technologies and engineering designs between the Southwest Research and Design Institute of Chemical Engineering and Sichuan Tianyi Science and Technology Co., Ltd. This agreement also covers the construction of a 400,000-ton-per-year dimethyl ether (DME) industrial facility by Ningxia Baota Group. The project is currently the world's largest gas-phase DME production plant, marking a significant breakthrough for China in this advanced energy technology sector. The successful implementation of this large-scale project is expected to serve as a key demonstration for the broader commercialization and adoption of DME as an alternative fuel.
According to reports, the Baota Group conducted extensive research and market analysis both domestically and internationally on DME technologies. They engaged in discussions with leading research institutions and ultimately chose the Southwest Research and Design Institute and Tianke Group due to their advanced, reliable, and mature technologies. The project is anticipated to require an investment of 120 million yuan and is scheduled to begin operations by the end of 2008.
The facility will utilize a methanol gas-phase catalytic dehydration process, featuring a unique vaporization decanter structure and a simplified separation process. This design is expected to reduce capital investment by 30% and significantly lower energy consumption. Compared to similar facilities worldwide, the steam consumption per ton of product will be 0.5 tons less. Additionally, the use of self-developed catalysts will achieve a methanol-to-DME selectivity of over 99.5%, nearly eliminating exhaust emissions and reducing methanol consumption per ton of product.
Over a decade ago, the Southwest Institute pioneered the construction of several gas-phase methanol-dehydration-based DME plants, including kiloton-scale and 10,000-ton-scale units for companies like Guangdong Zhongshan Fine Chemicals Co., Ltd. Today, the institute and Tianke Group have successfully deployed more than 40 DME production units globally. All these projects meet or exceed design specifications, with dimethyl ether content ranging from 99% to 99.9% and product yields reaching up to 98%. This ongoing success underscores the maturity and efficiency of the technology, reinforcing its potential for future expansion and application in clean energy initiatives.
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