Method and device for preparing low-carbon olefin
By employing catalytic conversion, etherification, and isomerization processes, and utilizing amorphous silica-alumina catalysts and zeolite catalysts, the problem of high selectivity for methanol-to-methane conversion in the production of low-carbon olefins from methyl tert-butyl ether was solved, thereby increasing the yields of ethylene and propylene and achieving low-cost production of low-carbon olefins.
Patent Information
- Application Number
- CN202411528425.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2026-05-01
AI Technical Summary
In the existing technology, there are few methods for producing low-carbon olefins by cracking methyl tert-butyl ether, and these methods have the problems of high selectivity for methanol to methane and low yields of ethylene and propylene.
The process employs catalytic conversion, etherification, and isomerization. By combining a catalytic conversion reactor, separation unit, etherification unit, and isomerization unit, and utilizing amorphous silica-alumina catalysts and zeolite catalysts, the reaction conditions are controlled to improve the yield of low-carbon olefins. Further conversion is achieved by recycling the etherified olefins.
This enables low-cost production of low-carbon olefins, improves the selectivity of ethylene and propylene, reduces methane yield, minimizes methanol content, and achieves efficient utilization of carbon resources.