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    • 9. 发明申请
    • Method For The Production Of Propene From Propane
    • 丙烷生产丙烯的方法
    • US20080207975A1
    • 2008-08-28
    • US11722367
    • 2005-12-20
    • Sven CroneOtto MachhammerGotz-Peter Schindler
    • Sven CroneOtto MachhammerGotz-Peter Schindler
    • C07C5/00
    • C07C5/3337C07C7/04C07C11/06
    • The invention relates to a process for preparing propene from propane, comprising the steps:A) a feed gas stream a comprising propane is provided;B) the feed gas stream a comprising propane and an oxygenous gas stream are fed into a dehydrogenation zone and propane is subjected to a nonoxidative catalytic, autothermal dehydrogenation to propene to obtain a product gas stream b comprising propane, propene, methane, ethane, ethene, nitrogen, carbon monoxide, carbon dioxide, steam and hydrogen;C) product gas stream b is cooled and steam is removed by condensation to obtain a steam-depleted product gas stream c;D) uncondensable or low-boiling gas constituents are removed by contacting product gas stream c with an inert absorbent and subsequently desorbing the gases dissolved in the inert absorbent to obtain a C3 hydrocarbon stream d1 and an offgas stream d2 comprising methane, ethane, ethene, nitrogen, carbon monoxide, carbon dioxide and hydrogen;E) the C3 hydrocarbon stream d1 is cooled and compressed to obtain a liquid C3 hydrocarbon stream e1;F) the liquid C3− hydrocarbon stream e1 is fed into a first distillation zone and separated distillatively into a stream f1 composed of propane and propene and a stream f2 comprising ethane and ethene;G) stream f1 is fed into a (second) distillation zone and separated distillatively into a product stream g1 composed of propene and a stream g2 composed of propane, and stream g2 is recycled at least partly into the dehydrogenation zone.
    • 本发明涉及一种从丙烷制备丙烯的方法,包括以下步骤:A)提供包含丙烷的原料气流a; B)将包含丙烷和含氧气流的原料气流a进料到脱氢区,丙烷经受非氧化催化,自热脱氢至丙烯以获得包含丙烷,丙烯,甲烷,乙烷,乙烯的产物气流b ,氮气,一氧化碳,二氧化碳,蒸气和氢气; C)产物气流b被冷却并通过冷凝除去蒸汽,得到蒸汽消耗产物气流c; D)通过使产物气流c与惰性吸收剂接触并随后将溶解在惰性吸收剂中的气体解吸,得到C 3 N 3烃流d 1和废气,除去不可冷凝或低沸点气体成分 流d 2包含甲烷,乙烷,乙烯,氮气,一氧化碳,二氧化碳和氢气; E)将C 3 C 3烃流d 1冷却并压缩,得到液体C 3烃流e1; F)将液体C 3 - C 3 - 烃流e 1进料到第一蒸馏区并蒸馏分离成由丙烷和丙烯组成的料流f 1和包含乙烷和乙烯的料流f 2; G)流f 1进料到(第二)蒸馏区并蒸馏分离成由丙烯构成的产物流g 1和由丙烷组成的料流g 2,并且流g 2至少部分地再循环到脱氢区中。