摘要:
The invention is directed to a process for the production and recovery of chemicals, in particular hydrocarbons, from a fermentation medium, wherein solvent impregnated carriers are used. Accordingly, the invention provides a process for the production of hydrocarbon from a fermentation liquid comprising:
forming said hydrocarbon from said fermentation liquid using a biocatalyst; contacting said fermentation liquid with a solvent impregnated carrier, whereby said formed hydrocarbon is sorbed by said solvent impregnated carrier; regenerating said solvent impregnated carrier, whereby a stream of said hydrocarbon is obtained; and optionally, recycling said regenerated solvent impregnated carrier. In particular, PHB (4-hydroxybenzoic acid) can be produced and isolated from the fermentation medium by means of such a "solvent extraction" procedure, which uses porous solid supports for the "immobilization" of the solvent.
摘要:
Process for desorbing gas absorbed in an absorption liquid, the process comprising passing heated absorption liquid through a second channel of said desorption unit in counter-current flow with said absorption liquid in said first channel, while said absorption liquid in said first and second channel exchange heat through a corrugated plate separating at least a part of said first and second channel. Gas desorption unit, comprising an assembly of plates, wherein the plates comprise a corrugated part comprising ridges and valleys, and a first channel there between, adapted for counter-current flow of said gaseous and liquid stream in said first channel, and a said second channel for a liquid stream in counter-current flow with the liquid stream in the first channel.
摘要:
The invention is directed to a method and apparatus for carrying out a continuous physical or chemical process, in particular crystallisation, sad process comprising flowing a fluid through a channel comprising an inlet and an outlet for said fluid, wherein said channel is at least in part curved and comprises at least two curvatures, allowing said chemical process to occur, while reversing the direction of the flow of said fluid in said channel multiple times.
摘要:
The invention is directed to a membrane gas desorption process, a gas separation process and a membrane gas desorption module. A more energy efficient and compact membrane gas desorption process can be obtained by integrating membrane gas desorption and heat exchange. In the process, lean absorption liquid is evaporated downstream the membrane and the vapour is provided at the permeate side of the membrane. The vapour passes through the membrane and condenses in the rich absorption liquid at the retentate side of the membrane, thus heating said rich absorption liquid and causing desorption of absorbed gas.
摘要:
Object of the present invention is to provide a membrane absorption and permeation method which facilitates absorption into the absorption liquid. In a first aspect this object is met by transferring at least one compound from a feed stream to an absorption liquid stream comprising: - feeding said feed stream to a feed stream compartment of a membrane unit; - feeding said absorption liquid stream to an absorption liquid compartment of said membrane unit; - wherein in said membrane unit said feed stream compartment and said absorption liquid compartment are separated by a membrane; - wherein said absorption liquid flows through said absorption liquid compartment in a direction that is essentially parallel to said membrane; - wherein the residence time of said absorption liquid in said membrane unit is τ; wherein τ = V /ϕ v , wherein V is the volume of said absorption liquid compartment and ϕ v is the volumetric flow rate of said absorption liquid stream; and - wherein for a duration less than τ the flow direction of said absorption liquid is changed.
摘要:
The invention discloses a method for in-situ extracting a reduced carbon dioxide product or product mixture from an electrochemical cell, and the use of a three-compartment electrochemical cell for in-situ extraction of organic carboxylic acids such as formic acid, acetic acid, oxalic acid, and/or salts thereof for commercial use. The method of the invention comprises introducing carbon dioxide-rich absorbent into a cathode compartment of an electrochemical cell, applying an electrical potential between an anode and a cathode in the electrochemical cell sufficient for the cathode to reduce carbon dioxide into a reduced carbon dioxide product of product mixture in the carbon dioxide-rich absorbent, thereby providing a carbon dioxide-poor absorbent, collecting reduced carbon dioxide product or product mixture via in-situ extraction into an acidic environment, and wherein the anode is separated from the cathode by more than one separator.
摘要:
The invention relates to a chemical conversion process and to a process for removing particles from a reaction mixture. The chemical conversion process of the invention comprises plasmonic heating of a reaction mixture, which reaction mixture comprises at least a one component and plasmonic particles, by exposing said reaction mixture to light comprising one or more wavelengths which are absorbed by at least part of the plasmonic particles, thereby controlling the reaction rate of one or more chemical reactions.
摘要:
The invention is directed to a membrane gas desorption process, a gas separation process and a membrane gas desorption module. A more energy efficient and compact membrane gas desorption process can be obtained by integrating membrane gas desorption and heat exchange. The process comprises: (a) providing rich absorption liquid, rich in said gas, (b) heating said rich absorption liquid, (c) contacting heated absorption liquid with a membrane, thereby desorbing at least part of said gas and evaporating part of said absorption liquid, providing vapour, passing desorbed gas and vapour through said membrane from a retentate side to a permeate side of said membrane, providing lean absorption liquid, (d) condensing at least part of said vapour on one or more condensers in heat exchange with the rich absorption liquid, providing a condensate, and using at least part of the heat of condensation for heating said rich absorption liquid in (b).
摘要:
The invention is directed to a method for lowering the amine content in an aerosol. More in particular, the invention relates to a post-combustion carbon dioxide capture process, wherein the content of an amine in an aerosol is lowered. The method of the invention for lowering the content of one or more amines in an aerosol comprising said one or more amines solubilised in aqueous aerosol droplets, comprises heating the aerosol and washing the aerosol with aqueous acid solution having a water activity which is lower than the water activity of the aqueous aerosol droplets.
摘要:
The invention relates to the field of reduction of CO 2 emission, more in particular to CO 2 capture and conversion. The invention further relates to the culturing of algae. One object of the present invention is to provide an alternative method for capturing and conversion of CO 2 from a gaseous stream.