Method for continuously preparing formic acid by using green carbon carbon source

The method for continuous preparation of formic acid using a microchannel reaction device and carbon dioxide as a green carbon source solves the problems of insufficient utilization of green carbon source and imprecise reaction control in existing technologies, and achieves a highly selective, low-carbon and environmentally friendly formic acid preparation effect.

CN122301664APending Publication Date: 2026-06-30CHINA PETROLEUM & CHEMICAL CORP +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies have failed to effectively utilize green carbon sources to synthesize formic acid, and conventional reactors cannot precisely control reaction conditions, resulting in low selectivity and large experimental errors.

Method used

Using a microchannel reactor and a green carbon source of carbon dioxide, formic acid is continuously prepared in the microchannel reactor by adjusting the flow rates of hydrogen and carbon dioxide and utilizing a variety of catalysts. The reactor consists of a three-layer structure, including a heat transfer layer and a reaction layer, and the module material is special glass.

Benefits of technology

It achieves highly selective and environmentally friendly formic acid preparation, reduces experimental errors, improves mass and heat transfer efficiency, and meets green, low-carbon and environmental protection requirements.

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Abstract

This invention discloses a method for the continuous preparation of formic acid using a green carbon source. The method involves adding a slurry of catalyst and water to a microchannel reactor, adjusting the flow rates of hydrogen and carbon dioxide (the green carbon source) according to the feed rate, and synthesizing formic acid after microchannel reaction. The microchannel reactor employs a multi-module structure, with the reaction plate consisting of three layers: the first and third layers are heat transfer layers, and the middle layer is the reaction layer, with multiple reaction modules connected in series. This invention can use various types of catalysts, exhibiting strong adaptability, and provides mild reaction conditions, achieving good reaction results. Compared to conventional reactors, the microchannel reactor allows for precise control of reaction conditions, and the larger heat exchange area significantly improves mass and heat transfer efficiency. The online continuous reaction of this invention breaks the intermittent operation mode of conventional reactors, reducing experimental errors caused by intermittent operation.
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Citation Information

Patent Citations

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