发明名称 |
PROCESSING OF HIGH NORMAL PARAFFIN CONCENTRATION NAPHTHA FEEDSTOCKS |
摘要 |
<p>IMPROVED PROCESSING OF HIGH NORMAL PARAFFIN CONCENTRATION NAPHTHA FEEDSTOCKS Normal paraffins present in high concentrations in light naphtha streams are separated from non-normal paraffins in a four or more bed adsorption system employing, on a cyclic basis, the processing steps of (1) cocurrent purge/adsorption, (2) cocurrent feed/adsorption, (3) countercurrent purge and (4) countercurrent displacement. A processing sequence is employed wherein the cocurrent purge/adsorption and countercurrent purge steps are carried out on a discontinuous basis, while cocurrent feed/adsorption and countercurrent displacement steps are carried out in overlapping sequence. Control means are provided to assure that the high normal paraffin-containing hydrocarbon feed gas and stripping gas are passed to the appropriate beds for said cocurrent purge/adsorption and countercurrent purge steps on a non-continuous basis, said feed gas being continuously fed to a mix drum for mixture with countercurrent purge effluent before removal for use in said cocurrent purge/adsorption step and in said cocurrent feed/adsorption step of the overall four-step process.</p> |
申请公布号 |
CA1268717(A) |
申请公布日期 |
1990.05.08 |
申请号 |
CA19860505422 |
申请日期 |
1986.03.27 |
申请人 |
UNION CARBIDE CORPORATION |
发明人 |
GRAY, ROBERT L., JR.;OETINGER, PETER L. |
分类号 |
C10G25/03;(IPC1-7):B01D53/04 |
主分类号 |
C10G25/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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