Method and system for preparing synthesis gas by coupling methanol-to-olefin demethanizing tower top gas and CO incinerator
By mixing the top gas from the methanol-to-olefins demethanizer with carbon dioxide and catalytically reacting it in a carbon monoxide incinerator to generate syngas, the carbon dioxide emission problem is solved, and efficient resource utilization and greenhouse effect reduction are achieved.
CN122079074APending Publication Date: 2026-05-26GUO NENG YULIN CHEM CO LTD
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUO NENG YULIN CHEM CO LTD
- Filing Date
- 2026-01-05
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
In existing technologies, the overhead gas from the methanol-to-olefins demethanizer is not effectively utilized, leading to increased carbon dioxide emissions and contributing to the greenhouse effect.
Method used
The overhead gas from the methanol-to-olefins demethanizer is mixed with supplemented carbon dioxide and then subjected to a catalytic reaction in a carbon monoxide incinerator to generate syngas. The heat from the carbon monoxide incinerator is used for heat recovery and carbon dioxide conversion.
Benefits of technology
It has achieved the effective utilization and emission reduction of carbon dioxide, generated syngas that can be used in chemical products, and improved resource utilization efficiency.
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Figure CN122079074A_ABST
Abstract
The invention discloses a method and a system for preparing synthesis gas by coupling methanol-to-olefin demethanizing tower top gas and a CO incinerator, and relates to the technical field of methanol downstream processing in the coal chemical industry. According to the invention, heat generated by the carbon monoxide incinerator is utilized to recycle and convert the methanol-to-olefin demethanizing tower top gas and carbon dioxide discharged from a factory so as to prepare the synthesis gas required for synthesizing chemical products, in the synthesis gas, the methane conversion rate can reach 70%-99%, the hydrogen / carbon monoxide ratio is 0.8-1.0, and the conversion rate of the methanol to olefin demethanizing tower top gas can reach 70%-99%. And trace components such as ethane, propane, methanol and the like in the demethanizing tower top gas can be well converted.
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