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According to news from April 5, **information from the Intellectual Property Office shows that Beijing Aerospace Petrochemical Technology Equipment Engineering Co., Ltd. has filed a patent application for a device named “An integrated system for dust removal and catalytic upgrading of gases produced by the pyrolysis of waste plastics”, with the publication number CN 119752494 A; the application was submitted in December 2024. The patent abstract indicates that an integrated device for dust removal and catalytic upgrading of pyrolyzed plastic gas includes a housing, a fixed catalyst bed, a filtration element, and a nitrogen injection system ； The filter element is installed inside the housing, dividing the interior space of the housing into a pre-filtering chamber and a post-filtering chamber ； The nitrogen back-blow mechanism is installed on the nitrogen injection main pipe inside the housing, and it is used to inject nitrogen from the filter element’s inlet port into the interior of the filter element ； The fixed catalyst bed is installed within the aforementioned post-filtering chamber ； The fixed catalyst bed is filled with catalyst ； The unpurified waste plastic pyrolysis gas enters from the bottom of the housing; a filter element is used to capture any dust present in the pyrolysis gas, and this filtered gas is then discharged through the outlet at the bottom of the housing. The filtered pyrolysis gas proceeds to a fixed catalyst bed, where it reacts with the catalysts to undergo catalytic purification, after which the gas is discharged through the outlet at the top of the housing. According to Tianyancha, Beijing Aerospace Petrochemical Technology Equipment Engineering Co., Ltd. was established in 1991 and is located in Beijing; it is a company that focuses on research and experimental development. The registered capital of the enterprise is 100 million RMB, and the paid-in capital is also 100 million RMB. According to the big data analysis conducted by Tianyancha, Beijing Aerospace Petrochemical Technology Equipment Engineering Co., Ltd. has invested in 6 companies in total and participated in 5,000 bidding projects. In terms of property-related information, there are 16 trademark records and 492 patent records; additionally, the company holds 86 administrative licenses.