Production process and flow chart of fumaric acid
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Production process and flow chart of fumaric acid
I also want to know, by the way, the process for maleic acid and the content of fumaric acid in the product
When producing phthalic anhydride, maleic acid is definitely produced as a by-product, right?
That is, it’s produced using phthalic anhydride wastewater as a raw material.
There are two types of raw materials: one is the acidic water generated as a by-product after the absorption of phthalic anhydride exhaust gases, and the other is the cis-anhydride acidic aqueous solution, which is an intermediate product in the cis-anhydride production process. The production process is not complex; simply add an inversion agent.