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    • 15. 发明公开
    • VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG
    • VERFAHREN ZUR HERSTELLUNG冯1,3-BUTADIEN澳大利亚N-BUTENEN DURCH氧化剂DEHYDRIERUNG
    • EP3063112A1
    • 2016-09-07
    • EP14790068.2
    • 2014-10-27
    • BASF SE
    • GRÜNE, PhilippHAMMEN, OliverSCHMITT, ChristineBALEGEDDE RAMACHANDRAN, Ragavendra PrasadJOSCH, Jan PabloWALSDORFF, Christian
    • C07C5/327C07C5/333C07C11/167
    • C07C5/48B01J23/002B01J23/8878B01J37/0045B01J2523/00C07C7/08C07C7/11C07C2523/04C07C2523/18C07C2523/26C07C2523/28C07C2523/745C07C2523/75C07C2523/887C07C11/167B01J2523/13B01J2523/54B01J2523/67B01J2523/68B01J2523/842B01J2523/845
    • A process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a1 comprising n-butenes; B) feeding the input gas stream a1 comprising n-butenes, an oxygenous gas and an oxygenous cycle gas stream a2 into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, steam, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b and optionally at least partly removing high-boiling secondary components and steam, giving a product gas stream b'; Cb) compressing and cooling the product gas stream b' in at least one compression and cooling stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, steam, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases; Da) absorbing the C4 hydrocarbons comprising butadiene and n-butenes in an aromatic hydrocarbon solvent as an absorbent and removing uncondensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, any carbon oxides, aromatic hydrocarbon solvent and any inert gases as gas stream d2 from the gas stream c2, giving an absorbent stream laden with C4 hydrocarbons and the gas stream d2, and then desorbing the C4 hydrocarbons from the laden absorbent stream, giving a C4 product gas stream d1; Db) at least partly recycling the gas stream d2 as cycle gas stream a2 into the oxidative dehydrogenation zone, wherein the content of aromatic hydrocarbon solvent in the cycle gas stream a2 is limited to less than 1% by volume.
    • 一种从正丁烯制备丁二烯的方法,包括以下步骤:A)提供包含正丁烯的输入气流a1; B)将包含正丁烯,氧气和氧循环气流a2的输入气流a1进料到至少一个氧化脱氢区并将正丁烯氧化脱氢成丁二烯,得到包含丁二烯的产物气流b,未转化的n - 丁烯,蒸汽,氧气,低沸点烃和高沸点次级组分,有或没有碳氧化物和有或无惰性气体; Ca)冷却产物气流b并任选地至少部分除去高沸点次级组分和蒸汽,得到产物气流b'; Cb)在至少一个压缩和冷却阶段压缩和冷却产物气流b',得到至少一个含水的冷凝物流c1和一个包含丁二烯,正丁烯,蒸汽,氧和低沸点烃的气流c2, 或不含碳氧化物,有或没有惰性气体; Da)在芳族烃溶剂中吸收包含丁二烯和正丁烯的C 4烃作为吸收剂,并除去包含氧,低沸点烃,任何碳氧化物,芳族烃溶剂和任何惰性气体作为气体的不可冷凝和低沸点气体组分 来自气流c2的液流d2,得到载有C 4烃和气流d2的吸收剂流,然后从负载的吸收剂流中解吸C4烃,得到C4产物气流d1; Db)至少部分地将作为循环气流a2的气流d2再循环到氧化脱氢区中,其中循环气流a2中的芳族烃溶剂的含量被限制为小于1体积%。
    • 20. 发明公开
    • VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN DURCH DEHYDRIERUNG VON N-BUTENEN UNTER BEREITSTELLUNG EINES BUTANE UND 2-BUTENE ENTHALTENDEN STOFFSTROMES
    • EP3218334A1
    • 2017-09-20
    • EP15790976.3
    • 2015-11-09
    • BASF SELinde Aktiengesellschaft
    • UNGELENK, JanGRÜNE, PhilippWALSDORFF, ChristianJOSCH, Jan PabloBENDER, Michael
    • C07C4/06C07C5/48C07C7/08C07C7/09C07C7/11C07C7/148C07C11/167C07C11/08
    • C07C5/48C07C2/10C07C2/62C07C6/04C07C7/08C07C7/11C07C2521/04C07C2523/18C07C2523/28C07C2523/30C07C2523/36C07C2523/755C07C2527/043C07C2527/1206C07C2527/126C07C11/167C07C11/08C07C9/10C07C9/21C07C11/06C07C11/02
    • The invention relates to a method for producing 1,3-butadiene from n-butenes, comprising the following steps: A) providing a feed gas flow a, containing butanes, 1-butene, 2-butene, isobutene, and possibly 1,3-butadiene, from a fluid catalytic cracking plant; B) separating isobutene from the feed gas flow a, wherein a material flow b, containing butanes, 1-butene, 2-butene, and possibly 1,3-butadiene, is obtained; C) feeding the material flow b, containing butanes, 1-butene, and 2-butene, possibly a gas containing oxygen, and possibly water vapor into at least one dehydrogenation zone and dehydrogenating 1-butene and 2-butene into 1,3-butadiene, wherein a product gas flow c, containing 1,3-butadiene, butanes, 2-butene, water vapor, possibly oxygen, low-boiling hydrocarbons, high-boiling secondary components, possibly carbon oxides, and possibly inert gases, is obtained; D) cooling and compressing the product gas flow c, wherein at least an aqueous condensate flow d1 and a gas flow d2, containing 1,3-butadiene, butanes, 2-butene, water vapor, possibly oxygen, low-boiling hydrocarbons, possibly carbon oxides, and possibly inert gases, are obtained; Ea) separating non-condensable and low-boiling gas constituents, comprising low-boiling hydrocarbons, possibly oxygen, possibly carbon oxides, and possibly inert gases, as a gas flow e2 from the gas flow d2 by absorbing the C4 hydrocarbons, comprising 1,3-butadiene, butanes, and 2-butene, in an absorbent, wherein an absorbent flow loaded with C4 hydrocarbons and the gas flow e2 are obtained, and Eb) subsequently desorbing the C4 hydrocarbons from the loaded absorbent flow, wherein a C4 hydrocarbon flow e1 is obtained; F) separating the C4 hydrocarbon flow e1 by extractive distillation by means of a solvent selective for 1,3-butadiene into a material flow f1, containing 1,3-butadiene and the solvent, and a material flow f2, containing butanes and 2-butene, characterized in that at least 90% of the 1-butene contained in flow b is converted in step C) and a product flow f2 containing butanes and 2-butene is obtained in step F.
    • 本发明涉及由正丁烯生产1,3-丁二烯的方法,其包括以下步骤:A)提供包含丁烷,1-丁烯,2-丁烯,异丁烯和可能的1,3-丁二烯的进料气流a; 来自流化催化裂化装置的丁二烯; B)从原料气流a分离异丁烯,其中获得含有丁烷,1-丁烯,2-丁烯和可能的1,3-丁二烯的物料流b; C)将含丁烷,1-丁烯和2-丁烯的材料流b,可能含有氧气的气体和可能的水蒸汽送入至少一个脱氢区,并将1-丁烯和2-丁烯脱氢成1,3-丁二烯, 丁二烯,其中获得包含1,3-丁二烯,丁烷,2-丁烯,水蒸气,可能的氧气,低沸点烃,高沸点次要组分,可能的碳氧化物和可能的惰性气体的产物气流c ; D)冷却并压缩产物气流c,其中至少含有可能含有1,3-丁二烯,丁烷,2-丁烯,水蒸汽,可能的氧,低沸点烃的含水冷凝物流d1和气流d2 碳氧化物和可能的惰性气体; Ea)将包含低沸点烃,可能氧,可能碳氧化物和可能的惰性气体的不可冷凝和低沸点气体成分作为来自气流d2的气体流e2通过吸收包含1, 3-丁二烯,丁烷和2-丁烯,在吸收剂中获得负载有C 4烃和气流e 2的吸收剂流,并且E b)随后从负载的吸收剂流中解吸C 4烃,其中C 4烃流 e1被获得; F)通过萃取蒸馏借助于对1,3-丁二烯选择性的溶剂将C4烃流e1分离成包含1,3-丁二烯和溶剂的物料流f1和包含丁烷和2-丁烯的物料流f2, 其特征在于流程b中包含的1-丁烯的至少90%在步骤C)中转化并且在步骤F中获得包含丁烷和2-丁烯的产物流f2。