Beiyuan Group was granted an invention patent: “A device and method for synthesizing vinyl chloride via the acetylene method””

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According to data from the Tianyancha app, Beiyuan Group (601568) has newly obtained an invention patent grant. The title of the patent is “A device and method for synthesizing vinyl chloride via the acetylene method”; the patent application number is CN202210212569.9, and the grant date is October 28, 2025. Patent abstract: This invention belongs to the field of vinyl chloride synthesis, and particularly discloses an apparatus and method for synthesizing vinyl chloride via the acetylene method. The device includes a mixing unit, a preheating unit, a reaction unit, a first demisting unit, a condensation unit, and a second demisting unit, which are arranged in sequence along the flow direction of the reaction gas ； As well as a shell-and-tube heat exchange unit and a liquid catalyst supply unit. A first tube box is provided between the tube side inlet of the shell-and-tube heat exchange unit and the outlet of the reaction unit, while a second tube box is placed between the tube side outlet of the shell-and-tube heat exchange unit and the inlet of the reaction unit to form a circulation loop. The first and second tube boxes are connected respectively to the output pipeline and the recovery pipeline of the catalyst supply unit, and these pipelines are connected to a storage tank ； A steam drum unit is provided between the inlet and outlet of the shell side of the shell-and-tube heat exchange unit. This device enables self-circulating gas-liquid reactions; it requires no additional power equipment and can produce high-quality by-product steam, offering advantages in terms of energy conservation, emission reduction, and good economic efficiency.