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US5863315A Process for the separation of isoalkanes/n-alkanes by gas phase adsorption using a pressure swing and four adsorbers 失效
标题翻译：使用压力摆动和四个吸附器通过气相吸附分离异烷烃/正烷烃的方法
公开(公告)号：US5863315A
公开(公告)日：1999-01-26
申请号：US900532
申请日：1997-07-25
申请人： Sophie Jullian , Jean-Louis Ambrosino , Alain Chansolme , Valerie Wiss-Henrard
发明人： Sophie Jullian , Jean-Louis Ambrosino , Alain Chansolme , Valerie Wiss-Henrard
IPC分类号： B01D53/04 , B01J20/18 , C07C7/13 , C10G25/03 , B01D53/047
CPC分类号： C10G25/03 , C07C7/13
摘要： Four adsorbers 1 to 4, each operating in a cycle comprising (described for adsorber 2): an adsorption step 1 wherein a feed from adsorber 2 is circulated to adsorber 2; an adsorption step 2 wherein feed is injected to the bottom of adsorber 2 and a product rich in isoparaffins is recovered from the head of adsorber 2; an adsorption step 3 wherein a portion of the fluid leaving adsorber 2 is sent to adsorber 3; an adsorption step 4 wherein the head of adsorber 2 receiving the feed is connected to the bottom of adsorber 3; a first depressurisation step 5 wherein adsorber 2 at high pressure is connected to adsorber 4 at a lower pressure; a second depressurisation step 6 wherein the head of adsorber 2 is closed; a stripping step 7 wherein the bottom of adsorber 2, which receives desorbent overhead, is connected to the top of adsorber 2; two principal stripping steps 8 and 9 wherein adsorber 2 alone is supplied with desorbent; a stripping finishing step 10 wherein adsorber 2 is continued to be supplied with desorbent and the outlet from the adsorber 2 is connected to adsorber 3; a first pressurisation step 11 to an intermediate pressure wherein the bottoms of adsorbers 2 and 4 are connected together; and a second pressurisation step 12 wherein a stream providing a portion of the effluent from adsorber 1 is introduced into the bottom of adsorber 2.
摘要翻译：四个吸附器1至4，每个在包括（对于吸附器2描述）的循环中操作：吸附步骤1，其中来自吸附器2的进料循环到吸附器2; 从吸附器2的头部回收吸附步骤2，其中将进料注入吸附器2的底部和富含异构烷烃的产物; 吸附步骤3，其中离开吸附器2的一部分流体被送到吸附器3; 吸附步骤4，其中接收进料的吸附器2的头部连接到吸附器3的底部; 第一减压步骤5，其中高压吸附器2以较低压力连接到吸附器4; 第二减压步骤6，其中吸附器2的头部关闭; 汽提步骤7，其中接收解吸塔顶的吸附器2的底部连接到吸附器2的顶部; 两个主要的汽提步骤8和9，其中单独的吸附器2被提供解吸剂; 剥离完成步骤10，其中吸附器2继续被提供解吸剂，并且吸附器2的出口连接到吸附器3; 第一加压步骤11到中间压力，其中吸附器2和4的底部连接在一起; 和第二加压步骤12，其中将提供一部分来自吸附器1的流出物的流引入吸附器2的底部。

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