Production equipment and process for removing formic acid in DMMn products
The invention belongs to the technical field of fine chemical engineering of transforming from coal chemical industry to petrochemical industry, and relates to production equipment and process for removing formic acid in DMMn products. The equipment body comprises a primary flash evaporation system...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the technical field of fine chemical engineering of transforming from coal chemical industry to petrochemical industry, and relates to production equipment and process for removing formic acid in DMMn products. The equipment body comprises a primary flash evaporation system and an alkaline washing system. The invention belongs to the field of fine chemical engineering of transforming from coal chemical industry to petrochemical industry; according to a conventional process, solid alkali is used in the production process, resistance drop in the equipment is relatively great, and formic acid, formaldehyde and water contained in the material cannot be removed; according to the device and the method disclosed by the invention, liquid alkali is adopted to replace the solid alkali to perform production and operation, and proved by actual production and verification, liquid alkali can completely remove formic acid in the material, also can remove a little amount of formaldehyde and water, an |
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