Process for the treatment of a product stream
First Claim
1. A process for the treatment of a product stream from an autothermal cracking process, said product stream comprising one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, and wherein the oxygenates are present in the product stream prior to treatment at a total concentration in the range 100-5000 parts per million by weight, said process comprising(A) contacting the product stream with an aqueous stream comprising at least one compound selected from those represented by formulas:
- (1) H2N—
OR1, and(2) H2N—
NR2R3,where;
R1 is selected from H and carbon containing substituents,R2 is H, andR3 is a ketyl group of formula C(O)NR4R5 where R4 is H or an alkyl and R5 is H, an alkyl or NH2,to provide a selective removal of oxygenates in the presence of carbon dioxide, and(B) subsequently passing the oxygenate treated stream from step (A) to an amine based carbon dioxide removal system to remove the carbon dioxide therein.
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Accused Products
Abstract
Process for treating a product stream typically from an autothermal cracking process, the product stream comprising one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, by contacting the product stream with at least one compound selected from (1) H2N—OR1, and (2) H2N—NR2R3, where R1, R2 and R3 may each be independently selected from H and carbon-containing substituents.
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Citations
5 Claims
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1. A process for the treatment of a product stream from an autothermal cracking process, said product stream comprising one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, and wherein the oxygenates are present in the product stream prior to treatment at a total concentration in the range 100-5000 parts per million by weight, said process comprising
(A) contacting the product stream with an aqueous stream comprising at least one compound selected from those represented by formulas: -
(1) H2N—
OR1, and(2) H2N—
NR2R3,where; R1 is selected from H and carbon containing substituents, R2 is H, and R3 is a ketyl group of formula C(O)NR4R5 where R4 is H or an alkyl and R5 is H, an alkyl or NH2, to provide a selective removal of oxygenates in the presence of carbon dioxide, and (B) subsequently passing the oxygenate treated stream from step (A) to an amine based carbon dioxide removal system to remove the carbon dioxide therein. - View Dependent Claims (2, 3, 4, 5)
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Specification