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公开(公告)号：US3721064A
公开(公告)日：1973-03-20
申请号：US3721064D
申请日：1971-02-25
Applicant: UNION CARBIDE CORP
Inventor： SYMONIAK M , LEE M
Abstract: Straight-chain and branched-chain monoolefins are separated by size selective molecular sieving in a vapor phase, isobaric, isothermal fixed bed process employing adsorption co-purge and countercurrent purge steps in cyclic sequence. The process utilizes a paraffinic hydrocarbon of higher carbon number than the olefin for the purge which permits distillation recovery of the separated olefins from the purge paraffin which is recycled. The straight chain paraffin content of the purge is greater than the straight chain olefin content of the feed whereby the molecular sieve is at least partially loaded with straight chain paraffin during all steps of the process.
Abstract translation: 直链和支链单烯烃通过在气相中的尺寸选择性分子筛分离，使用吸附共同吹扫的等压固定床方法和循环顺序的逆流清洗步骤分离。 该方法利用比烯烃更高碳数的链烷烃进行吹扫，其允许从再循环的吹扫石蜡中蒸馏回收分离的烯烃。 吹扫的直链链烷烃含量大于进料的直链烯烃含量，由此在该方法的所有步骤期间分子筛至少部分地加载有直链链烷烃。
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公开(公告)号：US3725299A
公开(公告)日：1973-04-03
申请号：US3725299D
申请日：1970-08-06
Applicant: UNION CARBIDE CORP
Inventor： TURNOCK P , BANCROFT W , LEE M
CPC classification number: C10G25/05 , C01B33/2807 , Y10S502/517
Abstract: The sweetening of natural gasoline liquid fractions employing molecular sieve type adsorbents to selectively adsorb the sulfur compound impurities is accomplished using a minimum of nonsorbable purge gas for regeneration purposes. The process comprises using a low boiling condensable paraffin to purge the sulfur compounds from the principal adsorption bed, condensing said paraffin, purifying same in the liquid phase by passage through a large pore molecular sieve bed, and thereafter removing the sulfur compounds from the latter bed with a non-sorbable purge gas.
Abstract translation: 使用分子筛型吸附剂选择性吸附硫化合物杂质的天然汽油液体馏分的增甜是使用最少的不可吸收的净化气体进行再生的目的。 该方法包括使用低沸点可冷凝石蜡从主要吸附床清除硫化合物，冷凝所述石蜡，通过通过大孔分子筛床在液相中纯化，然后从后一个床除去硫化合物 具有不可吸收的吹扫气体。
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