Pretreatment method and system for fraction oil for production of alkylbenzene

US11306262B2 · kind B2 · utility

Assignee

• Inner Mongolia Yitai Coal-based New Materials Research Institute Co., Ltd. · CN

Inventors

• Zhen Qian · 翁根苏木, CN
• Jingwei Wu · 达尔罕壕村, CN
• Xiaolong Zhang · 红钢城街道, CN
• Jingquan Zhang · 翁根苏木, CN
• Juncheng Li · 翁根苏木, CN
• Qinge Jian · Gaorihan, CN

Key dates

• Filing date: Jun 11, 2019
• Grant date: Apr 19, 2022
• Expiry date: Jun 11, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G2400/22
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Disclosed are a pretreatment method and system for a fraction oil for the production of alkylbenzene, the method comprising: adding a fraction oil, a weak base solution and an inorganic salt solution into a reactor, and leaving same to stand and layering same after the reaction is complete; adding water and an inorganic salt solution into an oil phase for washing with water; extracting same with a polar solvent having a high boiling point, and then adsorbing same with an adsorbent to separate oxygen-containing compounds in the neutral fraction oil; sending the extraction agent containing the oxygen-containing compounds to an extraction agent recovery unit; and then sending the neutral fraction oil to an alkylation reactor for a reaction.