专利名称：METHOD FOR THE PRODUCTION OF
BUTADIENE AND 1-BUTENE
发明人：JOHANN, THORSTEN,SCHINDLER, GOETZ-PETER,BRODHAGEN, ANDREAS,CRONE,SVEN,BENFER, REGINA,SIGL, MARCUS,DUDA,MARK
申请号：EP04804420.0申请日：20041230公开号：EP1708977B1公开日：20100609
摘要：The invention relates to a method for producing butadiene from n-butane,comprising the steps of A) providing an input gas flow a containing n-butane; B) feedingsaid input gas flow a containing n-butane into at least one first dehydrogenation zoneand dehydrogenating n-butane in a non-oxidative catalytic manner, whereby a productgas flow b containing n-butane, 1-butene, 2-butene, butadiene, hydrogen, low-boilingsecondary components, and optional steam is obtained; C) feeding the product gas flowb resulting from the non-oxidative catalytic dehydrogenation process and an oxygen-containing gas into at least one second dehydrogenation zone and oxidativelydehydrogenating 1-butene and 2-butene, whereby a product gas flow c containing n-butane, 2-butene, butadiene, hydrogen, low-boiling secondary components, and steam isobtained, said second product gas flow c having a higher butadiene content than productgas flow b; D) eliminating hydrogen, the low-boiling secondary components, and steam,whereby a C4 product gas flow d essentially comprising n-butane, 2-butene, and
butadiene is obtained; E) separating the C4 product gas flow d into a recirculation flow e1essentially comprising n-butane and 2-butene and a valuable product flow e2
substantially comprising butadiene by means of extractive distillation; F) feeding flow e1essentially comprising n-butane and 2-butene as well as a circulating flow g containing 1-butene and 2-butene into a distillation zone and separating the same into a 1-butene-richvaluable product flow f1, a recirculation flow f2 containing 2-butene and n-butane, and aflow f3 containing 2-butene, and redirecting the recirculation flow f2 into the first
dehydrogenation zone; G) feeding flow f3 containing 2-butene into an isomerization zoneand isomerizing 2-butene to 1-butene, whereby a circulating flow g containing 1-buteneand 2-butene is obtained, and redirecting the circulating gas flow g into the distillationzone.
申请人：BASF SE,BASF SE,BASF SE
地址：DE
国籍：DE
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容