MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202647115959 A) filed by China Petroleum & Chemical Corporation; and Sinopec Research Institute Of Petroleum Processing on September 28, 2026, for Method And System For Producing Light Aromatic Hydrocarbon.
Inventors include Yuan, Qimin; Geng, Sulong; Zhao, Xiangyu; Tang, Jinlian; Ma, Wenming; and Bai, Fengyu.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: Provided in the present invention are a method and system for producing a light aromatic hydrocarbon. A catalytic cracking cycle oil undergoes a two-stage hydrogenation treatment in the presence of hydrogen and a hydrogenation catalyst, and the hydrogenated oil gas passes through a first rectification tower device to obtain an overhead light fraction, a light aromatic hydrocarbon-rich fraction, a first recycle fraction having a specific distillation range, and a second recycle fraction having a specific distillation range; and the first recycle fraction enters a first reaction zone of a catalytic cracking device for a catalytic cracking reaction, and the second recycle fraction enters a second reaction zone of the catalytic cracking device for a reaction or returns to a second section of the hydrogenation treatment for recycling. Furthermore, a reaction product obtained from catalytic cracking is separated by a second rectification tower device to obtain a first fraction oil gas, a second fraction oil, and an oil slurry, the second fraction oil returns to a first section of the hydrogenation treatment, and optionally, the first fraction oil gas along with the hydrogenated oil gas enters the first rectification tower device for separation. In the present invention, a catalytic conversion product and a hydrogenation product are effectively separated in the same separation system and then undergo catalytic conversion in different zones, thereby saving the separation equipment and device investment while improving the yield of the produced light aromatic hydrocarbon.
Disclaimer: Curated by HT Syndication.
