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3. 发明申请

US20090069615A1 METHOD AND EQUIPMENT FOR PREPARING ISOBUTYLENE USING TERTIARY BUTYL ALCOHOL 审中-公开
标题翻译：使用仲丁醇制备异丁烯的方法和设备
公开(公告)号：US20090069615A1
公开(公告)日：2009-03-12
申请号：US12204588
申请日：2008-09-04
申请人： Jianqiu Yu , Deyu Chen , Junxiong Li , Zihong Chen , Gonghao Chen , Qinyu Huang , Caiyuan Chen
发明人： Jianqiu Yu , Deyu Chen , Junxiong Li , Zihong Chen , Gonghao Chen , Qinyu Huang , Caiyuan Chen
IPC分类号： C07C1/20 , B01J19/00
CPC分类号： C07C1/24 , B01D3/146 , C07C11/09
摘要： This invention discloses a method and equipment for preparing isobutylene using tertiary butyl alcohol. The equipment comprises a reaction vessel and a separating column. The upper portion of the separating column is fitted with a column top condenser, and the bottom of the column is fitted with a heater. The reaction vessel and the separating column are connected to each other by means of a pipe. One end of the dehydration column is connected to the heater at the bottom of the separating column, and the other end, after passing through a cooling unit, is connected to a distributor at the top of the separating column. A condenser with an outlet is connected to the outside of the said column top condenser. Isobutylene gas, which is generated as the solid superacid catalyst continuously reacts with and splits the tertiary butyl alcohol being introduced into the reaction vessel, flows together with boiling tertiary butyl alcohol gas into the separating column and is conducted by the distributor to the dehydrated extractant. Isobutylene gas flows out of the top of the column and passes through the condenser whereby it is cooled to become liquid isobutylene finished product. Unreacted tertiary butyl alcohol is condensed by the column top condenser to form liquid condensate, part of which is refluxed within the column and part of which flows out, returning to the reaction vessel. The dehydrated extractant passes through the distributor and enters the separating column from the top of the column. After the moisture in the rising gas is extracted and separated, it flows to the bottom of the column. After the dehydrated extractant has absorbed water, it is sent to the dehydration column where it is heated, the steam is separated from it, and the product is obtained.
摘要翻译：本发明公开了使用叔丁醇制备异丁烯的方法和设备。该设备包括反应容器和分离塔。分离塔的上部装有塔顶冷凝器，塔的底部装有加热器。反应容器和分离塔通过管道相互连接。脱水塔的一端连接到分离塔底部的加热器，另一端经过冷却单元连接到分离塔顶部的分配器。具有出口的冷凝器连接到所述塔顶冷凝器的外部。与固体超强酸催化剂连续反应而生成的异丁烯气体与引入反应容器的叔丁醇一起与沸腾的叔丁醇气体一起与分离塔一起流通，并由分配器进行脱水萃取剂。异丁烯气体从塔顶流出并通过冷凝器，由此被冷却成液态异丁烯成品。未反应的叔丁醇通过塔顶冷凝器冷凝以形成液体冷凝物，其中一部分在塔内回流并部分流出，返回反应容器。脱水的萃取剂通过分配器并从柱的顶部进入分离柱。在提升和分离上升气体中的水分后，它流到塔底。脱水萃取剂吸收水后，送至脱水塔加热，蒸汽与其分离，得到产品。

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