【Ten Years of Rapid Development in Chemical Equipment】Industrial demonstration plants with a capacity of 5,000 tons per year for the production of anisole passed the evaluation from 1519 to 2024

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This post was last edited by Desert Fish on 2024-3-25 at 09:34. 2024: A time of blossoming spring and joy on the forum **********************【Ten Years of Progress in Chemical Equipment】A continuously updated summary thread – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Industry Forum) ***************** On March 19, 2024, the 5,000-ton/year industrial demonstration plant for anisole, developed independently by Shaanxi Coal and Chemical Technology Research Institute Co., Ltd., passed a 168-hour on-site calibration test organized by the Shaanxi Petroleum and Chemical Industry Federation in Huazhou District, Weinan City, Shaanxi Province. The expert group, headed by Ma Xiaoxun, a professor at the School of Chemical Engineering at Northwest University, believes that this technological achievement possesses independent intellectual property rights, features advanced processes, efficient catalysts, and a green and environmentally friendly production method for anisole. Using phenol as the raw material and replacing the highly toxic traditional dimethyl sulfate process with green dimethyl carbonate, this technology has developed an innovative and complete new green production process for anisole, filling a gap in China. The expert group listened to the work reports, and by inspecting the production facilities and control rooms as well as reviewing relevant original documents such as operation records and analysis results, they assessed key aspects including the process parameters for anisole production, the operating condition of the equipment, the material balance within the system, the conversion rate of raw materials, the selectivity of the products, the yield and purity, various types of consumption, and the emissions of waste gases, wastewater, and solid waste. The assessment results show that during the evaluation period, the anisole production plant operated stably for 168 hours; the process operating conditions met the design requirements, with a production capacity of over 5,000 tons per year. The reaction time per reactor was ≤7.8 hours, the phenol conversion rate was >99.99%, the anisole selectivity was >99.93%, the product yield was 98.91%, and the product purity was >99.92%. These technical parameters satisfied the requirements of the major scientific and technological projects in Shaanxi Province. The production process of anisole does not use alkalis or solvents, resulting in a significant reduction in the amount of waste liquids and solids generated. The exhaust gases are treated to meet regulatory standards before being released, and the cost is lower than that of the traditional dimethyl sulfate process. This project is a major scientific and technological initiative in Shaanxi Province: the development and demonstration of an environmentally friendly green process for synthesizing a series of methyl aromatic ethers using phenolic compounds as raw materials. In recent years, the Huazhou branch of the Shaanxi Coal Research Institute has built production facilities for fine chemicals, enabling the flexible manufacture of a range of methyl aromatic ether products such as anisole, p-anisole, phthalyl ether, terephthalyl ether, and 1,2,3-trimethoxybenzene. It is reported that anisole is a high-value fine chemical product primarily used as an intermediate in organic synthesis, as a fragrance, and as an additive. Currently, the dimethyl sulfate production method is employed in China, which carries high safety risks and generates large amounts of wastewater with high salt content and high COD levels, posing environmental pollution problems.