Fluidized bed reactor, device and method for preparing low-carbon olefins from oxygen-containing compound

US12286594B2 · kind B2 · utility

Assignee

• DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES · CN

Inventors

• Mao Ye · Dalian, CN
• Tao Zhang · Beijing, CN
• Jinling Zhang · Qinhuangdao City, CN
• Shuliang Xu · Dalian, CN
• Hailong Tang · Dalian, CN
• Xiangao Wang · Dalian, CN
• Cheng Zhang · Dalian, CN
• Jinming Jia · Dalian, CN
• Jing Wang · 安丰镇, CN
• Hua Li · Gongguan, TW
• Chenggong Li · Dalian, CN
• Zhongmin Liu · 东风镇, CN

Key dates

• Filing date: Oct 16, 2020
• Grant date: Apr 29, 2025
• Expiry date: Dec 6, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/40
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A fluidized bed reactor, a device, and a method for producing low-carbon olefins from oxygen-containing compound are provided. The fluidized bed reactor includes a reactor shell, a reaction zone, a coke control zone and a delivery pipe, where there are n baffles arranged in the coke control zone, and the n baffles divide the coke control zone into n sub-coke control zones which include a first sub-coke control zone, a second sub-coke control zone, and an nth sub-coke control zone; at least one catalyst circulation hole is provided on each of the n-1 baffles, so that the catalyst flows in an annular shape in the coke control zone, where n is an integer. The device and method can be adapted to a new generation of DMTO catalyst, and the unit consumption of production ranges from 2.50 to 2.58 tons of methanol/ton of low-carbon olefins.