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Official Announcement | Ruihua Technology Secures Another Patent Grant from the USPTO

Warm Congratulations

Official Announcement | Warm Congratulations: Ruihua Technology Secures USPTO Patent Grant for Proprietary Styrene Process InnovationRecently, a proprietary technology independently developed by Changzhou Ruihua Chemical Engineering Technology Co., Ltd. (Beijing Stock Exchange: 920099) — titled "Low-Pressure-Drop Ethylbenzene Evaporator and Energy-Saving Vaporization Process for Ethylbenzene in Styrene Dehydrogenation Reaction Systems" — has been officially granted a patent by the United States Patent and Trademark Office (USPTO).

Low-Pressure-Drop Ethylbenzene Evaporator and Energy-Saving Vaporization Process for Ethylbenzene in Styrene Dehydrogenation Reaction Systems

This invention patent relates to an energy-saving process for the styrene production sector. The process employs a low-pressure-drop ethylbenzene evaporator with a double-layer structure that integrates heat exchange and gas-liquid separation functions. Steam generated by recovering waste heat via the main condenser is compressed to replace externally sourced low-pressure steam, and used as the primary steam feed for the ethylbenzene vaporizer. This design significantly reduces low-pressure steam consumption in the reaction system while cutting circulating cooling water usage, delivering dual savings in both utilities. The patented technology provides an integrated equipment-and-process solution for the green, energy-efficient upgrade of the styrene industry, and offers strong support for Ruihua’s sustainable growth and continuous technological advancement.

Sustained Technological Breakthroughs · New Records of Excellence

From proprietary in-house R&D to a global intellectual property (IP) deployment strategy, Ruihua Technology has now filed over 100 domestic and international patent applications.

Moving forward, Changzhou Ruihua Chemical Engineering Technology Co., Ltd. (Beijing Stock Exchange: 920099) will stay true to our founding mission of technological innovation, continue to ramp up R&D investment, and deepen our focus on core tracks of green chemical engineering and energy-saving process technologies. We will leverage a growing portfolio of original, high-value proprietary core technologies to empower the global petrochemical sector’s low-carbon transition, cement our leadership in the domestic market with robust, cutting-edge technological prowess, and expand our global footprint. Ultimately, we aim to drive the high-quality, sustainable development of the worldwide chemical industry.

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