On January 29, a signing ceremony was held in Chengdu to formalize a contract between the Southwest Research and Design Institute of Chemical Engineering and Sichuan Tianyi Science and Technology Co., Ltd. for the licensing of two invention patent technologies and engineering designs. This agreement also includes the construction of a 400,000-ton-per-year dimethyl ether (DME) industrial plant by Ningxia Baota Group. The facility is currently the largest gas-phase DME production unit in the world, marking a significant technological breakthrough for China in the field of clean energy and chemical production. According to reports, the Baota Group conducted extensive research on DME technologies and market trends both domestically and internationally, engaging in discussions with leading scientific institutions. After thorough evaluation, they selected the Southwest Branch and Tianke Group due to their advanced, reliable, and mature technologies. The project is expected to require an investment of 120 million yuan and is scheduled to begin operations by the end of 2008. The plant will utilize a methanol gas-phase catalytic dehydration process, featuring a unique vaporization decanter design and a simplified separation process. This innovative approach is expected to reduce capital investment by 30% and significantly lower energy consumption. Specifically, steam usage per ton of product will be 0.5 tons less than that of similar facilities worldwide. 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 fuel-grade DME at companies like Guangdong Zhongshan Fine Chemicals Co., Ltd. Today, the institute and Tianke Group have successfully implemented more than 40 DME production units globally, all meeting or exceeding technical and economic performance standards. The DME produced has a purity of 99% to 99.9%, with a product yield as high as 98%. This project further solidifies China’s growing leadership in DME technology and its potential to drive sustainable industrial development.

Stereo Light Curing Molding - Sla

STEREO LIGHT CURING MOLDING - SLA
It mainly uses photosensitive resin as a raw material, and utilizes the characteristic that liquid photosensitive resin will cure quickly under ultraviolet laser beam irradiation. The photosensitive resin is generally liquid, and it immediately initiates a polymerization reaction and completes curing when irradiated with a certain wavelength of ultraviolet light (250 nm to 400 nm). SLA focuses on the surface of the light-curing material by focusing ultraviolet light of a specific wavelength and intensity to solidify it sequentially from point to line and from line to surface, thereby completing the drawing of a layered cross-section.

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