Process for recovering alcohols in a fermenter
AssigneeIfp Energies Nouvelles
InventorsVincent Coupard, Helena Gonzalez Penas, Eszter Toth, Mehdi Le Moel
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Abstract
The present invention concerns a process for recovering fermentation products present in a fermentation mash produced in a bioreactor (9), comprising a step a) in which a gas stream (15) is sent into the fermentation mash under pressure in order to entrain at least a portion of the products and produce a gas stream (16) which is enriched in fermentation products. The process comprises a step h) for storage of the fermentation gases and the gas stream which is sent to the step a) is constituted by the stored fermentation gases.
Claims18
A process for recovering fermentation products present in a fermentation mash, which fermentation mash has been produced in a bioreactor, comprising
- storing fermentation gases that have been produced in the bioreactor,
- sending said stored fermentation gases as a gas stream into the fermentation mash under sufficient pressure to entrain at least a portion of the fermentation products and thereby produce a gas stream which is enriched in fermentation products, and
- bringing said gas stream which is enriched in fermentation products into contact with a solvent so as to produce a solvent which is enriched in fermentation products.
A process for the production of fermentation products, comprising the following steps:
- i. fermenting an aqueous solution of C5 and/or C6 sugars in a bioreactor in the presence of a microorganism so as to produce a fermentation mash containing fermentation products and fermentation gases;
- ii. sending the fermentation gas produced in the bioreactor to a storage unit;
- iii. sending the stored fermentation gases to the aqueous fermentation broth under sufficient pressure to entrain the fermentation products in the gas stream and thereby produce a gas stream which is enriched in fermentation products;
- iv. bringing said gas stream which is enriched in fermentation products into contact with an organic solvent so as to produce a solvent which is enriched in fermentation products;
- v. regenerating said organic solvent which is enriched in fermentation products so as to produce a stream which is enriched in fermentation products and a regenerated solvent.
Dependencies are inferred from the claim text.