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Successful Installation of Methanol Washing Tower for Inner Mongolia Rongxin Chemical’s Coal-based Ethylene Glycol and Polyoxymethylenes Circular Economy Demonstration Project Author/Source: Date: 2019-06-11 Clicks: 11 Recently, the upper section of the methanol washing tower T21001 for Inner Mongolia Rongxin Chemical Co., Ltd.’s 400,000-ton coal-based ethylene glycol and 300,000-ton polyoxymethylenes circular economy demonstration project was successfully installed on site; once completed, this tower will be 118 meters tall. At 7:30 a.m. on May 27, lifting of the upper section of the methanol scrubber tower began, and by 10:00 a.m., the tower was in place. The operation took two and a half hours, and the lifting was completed successfully. The successful hoisting and installation of the methanol scrubber tower marks the near completion of the installation of the purification equipment for the Rongxin project, with pipeline installation work entering its peak phase. The tower was designed by Hualu Engineering Technology Co., Ltd. and manufactured by Xi’an Nuclear Equipment Co., Ltd. It arrives in six sections in total; the ground sections are assembled into three groups, with two aerial assemblies being carried out. The third section of the tower being lifted this time weighs about 280 tons. The first batch arrived on January 20, 2019, and the first aerial alignment was carried out on April 14, 2019. It is reported that this project’s single-series processing capacity for low-temperature methanol washing ranks among the highest in the world; it features a high height, low operating energy consumption, and advanced process technology, although the manufacturing and installation of its equipment are complex. To ensure the smooth progress of on-site construction and lifting of the tower, the Rongxin project team developed a detailed schedule for each construction phase, specifying the exact dates and assigning responsibilities to individual persons. By coordinating the close cooperation of various construction units involved in equipment manufacturing, lifting, anti-corrosion, and insulation work, it is ensured that all preparatory tasks prior to lifting are completed on schedule. The 400,000-ton coal-to-ethylene glycol and 300,000-ton polyoxymethylenemethane circular economy demonstration project of Inner Mongolia Rongxin Chemical Co., Ltd. is located in the Sanyangliang Industrial Park in Dalaat Banner, Inner Mongolia Autonomous Region. It represents a major project undertaken by the company to extend its industrial chain and promote the clean utilization of coal, building on its initial 900,000-ton coal-to-methanol project. The total investment in the project is 7.68 billion yuan, and construction commenced in August 2017. Zhang Yuzhen, deputy general manager of Yanzhou Coal Industry Ordos Energy Chemical Co., Ltd., said that the project is expected to complete the entire process and begin trial operations in September 2019. Using coal as raw material and the four-nozzle gasification technology developed by East China University of Science and Technology, the project produces CO and H2 required for ethylene glycol production, as well as syngas needed for methanol synthesis; ethylene glycol is synthesized via an indirect method, while DMMn is synthesized indirectly from methanol. Among them, the ethylene glycol plant signed EPC general contract agreements for the project with China Fifth Ring Engineering Co., Ltd. and Huashuo Technology Co., Ltd.