Recovery of sulphuric acid
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorsJohannes Wouterus Van Groenestijn, Jacob Hendrik Obbo Hazewinkel, Raymond Johannes Maria Creusen, Koen Peter Henri Meesters
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Abstract
The invention is directed to a process for the recovery of sulphuric acid from a mixture comprising sulphuric acid and hydrocarbons, in particular carbohydrates. In accordance with the present invention the mixture comprising sulphuric acid and carbohydrates, is contacted with an anion selective membrane, thus producing a sulphuric acid rich filtrate stream and a stream depleted in sulphuric acid.
Claims8
A process for recovery of sulphuric acid from a mixture comprising sulphuric acid and organic matter, comprising the step of contacting said mixture with an anion selective membrane, thus producing a sulphuric acid rich filtrate stream and a stream depleted in sulphuric acid, wherein said mixture originates from a contacting step wherein biomass is contacted with a fresh stream of sulphuric acid, and wherein said fresh stream of sulphuric acid is at least partly obtained from the filtrate that is obtained by said step of contacting said mixture with said anion selective membrane, and wherein said fresh stream of sulphuric acid further contains sulphuric acid that is obtained by burning H2S.
Dependencies are inferred from the claim text.