公开(公告)号：US4816607A

公开(公告)日：1989-03-28

申请号：US211317

申请日：1988-06-24

申请人： Bipin V. Vora ,  Peter R. Pujado ,  Richard E. Conser

发明人： Bipin V. Vora ,  Peter R. Pujado ,  Richard E. Conser

IPC分类号： C07C5/27 ,  C07C41/06

CPC分类号： C07C41/06 ,  C07C5/2791

摘要： A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C.sub.4 isoparaffins, normal paraffins, an etherification recycle and butane isomerization effluent enter a deisobutanizer column. Normal paraffins withdrawn from the fractionator are isomerized and returned to the fractionator, and isoparaffins are withdrawn from the fractionator and dehydrogenated. The resulting olefins enter an etherification zone for reaction of isobutene with a C.sub.2 -C.sub.5 alcohol. Unreacted paraffins and olefins comprise a portion of the etherification effluent entering the deisobutanizer. After separation for recovery of the ether product, unreacted paraffins and olefins are passed through a dehydrogenation zone for saturation of the olefins and then returned to the deisobutanizer column. Normal butanes are withdrawn as a sidecut from the deisobutanizer. The sidecut passes to an isomerization zone and a mixture of isobutane and normal butane is recycled to the deisobutanizer. In a highly preferred embodiment, spent catalyst from the isomerization zone fulfills the catalyst requirement of the dehydrogenation zone.

摘要翻译： 公开了一种用于从轻链烷烃和醇生产包括甲基叔丁基醚（MTBE）的醚的多步烃转化方法。 C4异构烷烃，正链烷烃，醚化再循环和丁烷异构化流出物的混合物进入脱异丁烷塔。 从分馏器中取出的正链烷烃被异构化并返回到分馏器中，异链烷烃从分馏器中取出并脱氢。 所得烯烃进入醚化区以使异丁烯与C 2 -C 5醇反应。 未反应的链烷烃和烯烃包含进入脱异丁烷的醚化流出物的一部分。 在分离回收醚产物后，将未反应的链烷烃和烯烃通过脱氢区以使烯烃饱和，然后返回到脱异丁烷塔。 正常丁烷作为脱离异构体的副产物被撤回。 旁路经过异构化区，异丁烷和正丁烷的混合物再循环到脱异丁烷。 在非常优选的实施方案中，来自异构化区的废催化剂满足脱氢区的催化剂需求。

公开(公告)号：US4754078A

公开(公告)日：1988-06-28

申请号：US020806

申请日：1987-03-02

申请人： Bipin V. Vora ,  Peter R. Pujado ,  Richard E. Conser

发明人： Bipin V. Vora ,  Peter R. Pujado ,  Richard E. Conser

IPC分类号： C07C5/27 ,  C07C41/06

CPC分类号： C07C41/06 ,  C07C5/2791

摘要： A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C.sub.4 isoparaffins, normal paraffins, an etherification recycle and butane isomerization effluent enter a deisobutanizer column. Normal paraffins withdrawn from the fractionator are isomerized and returned to the fractionator, and isoparaffins are withdrawn from the fractionator and dehyrogenated. The resulting olefins enter an etherification zone for reaction of isobutene with a C.sub.2 -C.sub.5 alcohol. Unreacted paraffins and olefins comprise the etherification effluent entering the deisobutanizer. Normal butanes and olefins are withdrawn as a sidecut from the deisobutanizer. Hydrogenation of the sidecut saturates any olefins contained therein which would interfere with the isomerization of normal butanes. The saturated sidecut passes to an isomerization zone and a mixture of isobutane and normal butane is recycled to the deisobutanizer. In a highly perferred embodiment, spent catalyst from the isomerization zone fulfills the catalyst requirement of the dehydrogenation zone.

摘要翻译： 公开了一种用于从轻链烷烃和醇生产包括甲基叔丁基醚（MTBE）的醚的多步烃转化方法。 C4异构烷烃，正链烷烃，醚化再循环和丁烷异构化流出物的混合物进入脱异丁烷塔。 从分馏器中取出的正链烷烃被异构化并返回到分馏器中，并从分馏器中取出异链烷烃并进行脱氢。 所得烯烃进入醚化区以使异丁烯与C 2 -C 5醇反应。 未反应的链烷烃和烯烃包含进入脱异丁烷的醚化流出物。 正丁烷和烯烃作为脱离异构化剂的副反应物被排出。 旁路的氢化使其中含有的任何烯烃饱和会干扰正常丁烷的异构化。 饱和侧面经过异构化区，异丁烷和正丁烷的混合物再循环到脱异丁烷。 在高度推断的实施方案中，来自异构化区域的废催化剂满足脱氢区的催化剂需求。