Sinopec was granted a utility model patent: “A waste heat recovery system for ethylene plants””

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According to data from the Tianyancha app, Sinopec (600028) has newly obtained a utility model patent, titled “A waste heat recovery system for ethylene plants”. The patent application number is CN202520483917.5, and it was granted on March 20, 2026. Patent abstract: This utility model relates to the field of ethylene plant technology, and discloses a waste heat recovery system for ethylene plants, which includes a first heat exchanger, a second heat exchanger, a process water and wastewater unit, a desalinated water unit, and a circulating water unit ； The process water and wastewater unit includes a wastewater inlet pipe, a first wastewater transfer pipe, a second wastewater transfer pipe, and a wastewater discharge pipe ； The desalinated water unit includes a desalinated water inlet pipe, a desalinated water transfer pipe, a deaerator, a desalinated water outlet pipe, and a steam inlet pipe ； The circulating water unit includes a circulating water inlet pipe and a circulating water outlet pipe ； The waste heat recovery system for ethylene plants provided by this utility model utilizes a first heat exchanger, a second heat exchanger, a wastewater inlet pipe, a first wastewater transfer pipe, a second wastewater transfer pipe, a wastewater discharge pipe, a desalinated water inlet pipe, and a desalinated water transfer pipe to heat the desalinated water using the heat from process water and wastewater. This reduces the amount of circulating water and steam required, thereby lowering the energy consumption of the ethylene plant. Since the beginning of this year, Sinopec has obtained 1,043 new patent approvals, a 47.32% increase compared to the same period last year. Based on the company’s financial figures for the first half of 2025, the company invested 6.186 billion yuan in research and development during that period, representing a 3.05% increase compared to the previous year. According to big data analysis by Tianyancha, the Dongxing Gas Station of Sinopec Sales Co., Ltd. in Zhuhai, Guangdong, has participated in 4 bidding projects ； In addition, the company holds 8 administrative licenses.