Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking
Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between -10 and - 40 DEG C to free the cracked gas from meth...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
07.09.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between -10 and - 40 DEG C to free the cracked gas from methane and hydrogen gas, whereafter the remaining stream is treated by distillation in a distillation unit to obtain a C4/C5 containing stream and the ethylene and propylene containing stream; whereafter the C4/C5 stream is treated with a hydrogen containing stream in a hydrogenation unit, whereafter a part of the hydrogenated C4/C5 stream is cooled to a temperature between -10 and -40 DEG C and recycled to the absorptive demethanizer and a part of the hydrogenated C4/C5 stream is separated. |
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Bibliography: | Application Number: CN20038015998 |