PROCESS AND APPARATUS FOR PRODUCING ETHYLENE VIA PREPARATION OF SYNGAS
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Abstract
A process for producing ethylene from a carbonaceous containing feedstock the process comprising the steps of a) reforming the carbonaceous containing feedstock into a first product stream comprising carbon dioxide, carbon monoxide and hydrogen; b) fermenting the first product stream with an acetogenic anaerobic bacteria to produce a second product stream comprising ethanol; c) concentrating ethanol from the second product stream into a third product stream and; d) dehydrating ethanol in the third product stream to produce ethylene.
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Citations
38 Claims
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1-18. -18. (canceled)
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19. A process for producing ethylene from a carbonaceous containing feedstock the process comprising the steps of
a) reforming the carbonaceous containing feedstock into a first product stream comprising carbon dioxide, carbon monoxide and hydrogen; -
b) fermenting the first product stream with an acetogenic anaerobic bacteria to produce a second product stream comprising ethanol; c) concentrating ethanol from the second product stream into a third product stream; and d) dehydrating ethanol in the third product stream to produce a first, ethylene enriched, carbonaceous fraction, a second, ethylene depleted, carbonaceous fraction and water and d1) recycling at least a part of the water, optionally after treatment, to step b) and/or to step a) and/or recycling at least a part of the second, ethylene depleted carbonaceous fraction as a feedstock to step a). - View Dependent Claims (21, 22, 23, 24, 25, 28, 29, 30, 31, 32, 33, 35, 36)
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20. A process for producing an olefin derivative the process comprising
a) reforming the carbonaceous containing feedstock into a first product stream comprising carbon dioxide, carbon monoxide and hydrogen; -
b) fermenting the first product stream with an acetogenic anaerobic bacteria to produce a second product stream comprising ethanol; c) concentrating ethanol from the second product stream into a third product stream; d) dehydrating ethanol in the third product stream to produce a first, ethylene enriched, carbonaceous fraction, a second, ethylene depleted, carbonaceous fraction and water and d1) recycling at least a part of the water, optionally after treatment, to step b) and/or to step a) and/or recycling at least a part of the second, ethylene depleted carbonaceous fraction as a feedstock to step a); and e) converting the ethylene into an olefin derivative. - View Dependent Claims (26, 27, 34)
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37. Apparatus for producing ethylene comprising
i) a reformer for reforming a carbonaceous feedstock into a first product stream comprising carbon dioxide, carbon monoxide and hydrogen; -
ii) a fermenter for fermenting the first product stream into a second product stream comprising ethanol; iii) means for concentrating ethanol from the second product stream; iv) a dehydrator for dehydrating the ethanol to a first, ethylene enriched, carbonaceous fraction, a second, ethylene depleted, carbonaceous fraction and water; and either or both v) means for recycling at least a portion of the second, ethylene depleted, carbonaceous fraction to the reformer and vi) means for recycling at least a portion of the water to the fermenter and/or reformer. - View Dependent Claims (38)
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Specification