China Chengda Engineering Co., Ltd. has obtained a patent titled “A spraying device for the hydrogenation of carbon dioxide to p-tert-butylbenzene”
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According to information from the Intellectual Property Office as of May 31, 2025, **China Chengda Engineering Co., Ltd. has been granted a patent titled “A spraying device for the hydrogenation of carbon dioxide to p-tertbutylbenzene,” with the approval number CN222918651U; the application was filed in July 2024.** The patent abstract indicates that this utility model relates to the field of chemical engineering, and discloses a spraying device for the hydrogenation of carbon dioxide to produce p-tertbutylbenzene. It includes a liquid-phase aromatic hydrocarbon return pipeline, a fluidized-bed reactor, and nozzles located within the fluidized-bed reactor; the liquid-phase aromatic hydrocarbon return pipeline is connected to the nozzles. This practical new design solves problems existing in the prior art, such as the low yield of the target product.
According to news from April 5, 2025, **information from the Intellectual Property Office shows that China Chengda Engineering Co., Ltd. has obtained a patent titled “A Ventilated and Rainproof Exterior Wall Structure,” with the approval announcement number CN 222716276 U; the application was filed in June 2024. The patent abstract indicates that this utility model discloses a ventilation and weatherproofing exterior wall structure, which falls within the field of petrochemical technology. It includes a factory building support structure, an upper exterior wall positioned above the factory building support structure, ventilation openings located on the factory building support structure below the upper exterior wall, ventilation and weatherproofing components installed at these ventilation openings, as well as a support framework used to hold up these ventilation and weatherproofing components. This utility model features a rational design: an air ventilation and snow/rain protection component is installed on the upper edge of the ventilation opening. The ventilation opening facilitates air convection, while the snow/rain protection component effectively prevents rain and snow from entering.
According to news from October 29, 2024, **information from the Intellectual Property Office shows that China Chengda Engineering Co., Ltd. has obtained a patent titled “A Thermal Standby Process for Ammonia Synthesis and the Synthesis Tower,” with the approval announcement number CN 116239127 B; the application was filed in February 2023.
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