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    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION
    6.
    发明公开
    PROCESS FOR PREPARING 1,3-BUTADIENE FROM N-BUTENES BY OXIDATIVE DEHYDROGENATION 审中-公开
    由氧化脱氢制备N-丁烯制备1,3-丁二烯的方法

    公开(公告)号：EP3215478A1

    公开(公告)日：2017-09-13

    申请号：EP15788406.5

    申请日：2015-11-02

    申请人： BASF SE ,  Linde AG

    发明人： GRÜNE, Philipp ,  DEUBLEIN, Stephan ,  WALSDORFF, Christian ,  JOSCH, Jan Pablo ,  RAHM, Rainer ,  REYNEKE, Hendrik ,  WELLENHOFER, Anton ,  WENNING, Ulrike ,  TOEGEL, Christine ,  BOELT, Heinz

    IPC分类号： C07C5/48 ,  C07C7/04 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167

    CPC分类号： C07C5/48 ,  C07C7/005 ,  C07C7/04 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167 ,  C07C2523/31 ,  C07C2523/843 ,  C07C2523/847

    摘要： The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes; B) feeding the input gas stream a comprising n-butenes and a gas containing at least oxygen 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, water vapor, 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 by contacting with a circulating cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase comprising an organic solvent; Cb) compressing the cooled product gas stream b which may have been depleted of high-boiling secondary components in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, water vapor, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases;D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, as gas stream d2 from the gas stream c2 by absorbing the C4 hydrocarbons comprising butadiene and n-butenes in an absorbent, 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; E) separating the C4 product stream d1 by extractive distillation with a butadiene- selective solvent into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes; F) distilling the stream e1 comprising butadiene and the selective solvent into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene; which comprises G) removing a portion of the aqueous phase of the cooling medium which circulates in step Ca) and has an aqueous phase and an organic phase as aqueous purge stream g; H) distillatively separating the aqueous purge stream g into a fraction h1 enriched in organic constituents and a fraction h2 depleted of organic constituents.

    摘要翻译： 本发明涉及由正丁烯制备丁二烯的方法，其包括以下步骤：A）提供包含正丁烯的输入气流a; B）将包含正丁烯的输入气流a和至少含氧的气体送入至少一个氧化脱氢区，并将正丁烯氧化脱氢为丁二烯，得到含丁二烯的产物气流b，未转化的正丁烯，水 蒸气，氧气，低沸点烃和高沸点次要组分，有或没有碳氧化物，有或没有惰性气体; Ca）通过在至少一个冷却区中与循环冷却介质接触来冷却产物气流b，所述冷却介质至少部分再循环并且具有水相和包含有机溶剂的有机相; Cb）将在至少一个压缩阶段中可能已经耗尽高沸点次要组分的冷却产物气流b压缩，得到至少一种含水冷凝物流c1和一种气体料流c2，所述气体料流包含丁二烯，正丁烯，水蒸气， 氧和低沸点烃，有或没有碳氧化物，有或没有惰性气体; D）除去含有氧和低沸点烃的不可冷凝和低沸点气体成分，有或没有碳氧化物，有或没有惰性气体，如 通过在吸收剂中吸收包含丁二烯和正丁烯的C 4烃，从气流c 2中产生气流d 2，产生负载有C 4烃和气流d 2的吸收剂流，然后从负载吸收剂流解吸C 4烃，得到 C4产物气流d1; E）通过用丁二烯选择性溶剂萃取蒸馏将C4产物流d1分离成包含丁二烯和选择性溶剂的物流e1和包含正丁烯的物流e2; F）将包含丁二烯和选择性溶剂的物流e1蒸馏成基本上由选择性溶剂组成的物流f1和包含丁二烯的物流f2; 其包括G）除去在步骤Ca）中循环的冷却介质的一部分水相并且具有水相和有机相作为含水清洗流g; H）蒸馏分离含水清扫流g成为富含有机成分的部分h1和贫化有机成分的部分h2。

    VERFAHREN ZUR HERSTELLUNG VON BUTADIEN DURCH OXIDATIVE DEHYDRIERUNG VON N-BUTENEN
    7.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON BUTADIEN DURCH OXIDATIVE DEHYDRIERUNG VON N-BUTENEN 审中-公开

    公开(公告)号：EP3383831A1

    公开(公告)日：2018-10-10

    申请号：EP16805129.0

    申请日：2016-12-02

    申请人： BASF SE ,  Linde AG

    发明人： JOSCH, Jan Pablo ,  BALEGEDDE RAMACHANDRAN, Ragavendra Prasad ,  GRUENE, Philipp ,  RISSEL, Steffen ,  GEMBALA, Martin ,  WENNING, Ulrike ,  WELLENHOFER, Anton ,  REYNEKE, Hendrik ,  TOEGEL, Christine

    IPC分类号： C07C5/48

    CPC分类号： C07C5/48 ,  B01D3/40 ,  B01J19/0053 ,  B01J2219/00121 ,  B01J2219/00425 ,  C07C7/005 ,  C07C7/08 ,  C07C7/09 ,  C07C7/11 ,  C07C11/167

    摘要： The method according to the invention has the steps of A) providing a feed gas flow a which contains n-butene; B) feeding the n-butene-containing feed gas flow a and an oxygen-containing gas into a dehydrogenation reactor and oxidatively dehydrogenating n-butene into butadiene; C) cooling and compressing the product gas flow b in at least one cooling stage comprising a quench column and in a compression stage comprising a compressor, wherein the product gas flow b is brought into contact with at least one coolant being circulated; D) separating non-condensable and low-boiling gas components as gas flow d2 out of the gas flow c2 by absorbing the C
    4 hydrocarbons in at least one absorption agent being circulated; E) separating the C
    4 product flow d1 into a material flow e1, which contains butadiene and a selective solvent, and a material flow e2, which contains n-butene, by means of an extractive distillation using the solvent which is selective for butadiene; F) distilling the material flow e1, which contains butadiene and the selective solvent, into a material flow f1, which substantially consists of the selective solvent, and a butadiene-containing material flow f2. The invention is characterized in that the following measures (i) to (iii) are taken: (i) preventing the formation of explosive gas mixtures by monitoring the oxygen concentration in the oxygen-containing gas flows fed into the dehydrogenation zone and controlling the mass flows of oxygen-containing gas flows and hydrocarbon-containing gas flows such that no explosive gas mixtures can be formed; (ii) interrupting the supply of the oxygen-containing gas mixture into the dehydrogenation zone if a threshold for the oxygen concentration in the dehydrogenation gas mixture is exceeded; and (iii) carrying out steps A) to F) in equipment which is designed to be explosion-resistant, wherein liquid-conducting pipelines are designed to be explosion-resistant, and gas lines are designed to be detonation-resistant.

    VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG
    8.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG 审中-公开

    公开(公告)号：EP3197851A1

    公开(公告)日：2017-08-02

    申请号：EP15763001.3

    申请日：2015-09-14

    申请人： BASF SE ,  Linde AG

    发明人： JOSCH, Jan Pablo ,  GRÜNE, Philipp ,  BENFER, Regina ,  VICARI, Maximilian ,  BIEGNER, Andre ,  BLOCH, Gregor ,  BOELT, Heinz ,  REYNEKE, Hendrik ,  TOEGEL, Christine ,  WENNING, Ulrike

    IPC分类号： C07C5/48 ,  C07C7/08 ,  C07C7/11 ,  C07C7/04 ,  C07C11/167

    CPC分类号： C07C5/48 ,  B01D3/40 ,  C07C5/333 ,  C07C7/005 ,  C07C7/05 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167

    摘要： The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream (a) comprising n-butenes, B) feeding the input gas stream (a) comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, wherein a product gas stream (b) comprising butadiene, unconverted n-butenes, water vapour, oxygen, low-boiling hydrocarbons and high-boiling secondary components, optionally carbon oxides and optionally inert gases is obtained; Ca) cooling the product gas stream (b) by bringing into contact with a cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase ; Cb) compressing the cooled product gas stream (b) which may have been depleted of high-boiling secondary components in at least one compression stage, giving at least one aqueous condensate stream (c1) and one gas stream (c2) comprising butadiene, n-butenes, water vapour, oxygen and low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases; D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, as gas stream (d2) from the gas stream (c2) by absorbing the C
    4 hydrocarbons comprising butadiene and n-butenes in an absorbent, giving an absorbent stream laden with C
    4 hydrocarbons and the gas stream (d2), and then desorbing the C
    4 hydrocarbons from the laden absorbent stream, giving a C
    4 product gas stream (d1), E) separating the C
    4 product stream (d1) by extractive distillation with a butadiene-selective solvent into a stream (e1) comprising butadiene and the selective solvent and a stream (e2) comprising n-butenes; F) distilling the stream (e1) comprising butadiene and the selective solvent into a stream (f1) consisting essentially of the selective solvent and a stream (f2) comprising butadiene, charactersied in that step Cb) comprises at least two compression stages Cba) and at least two cooling stages Cbb), which are designed as quench columns, in the cooling stage, the cooling takes place by bringing into direct contact with the two phase cooling medium having an aqueous and an organic phase.

    摘要翻译： 本发明涉及由正丁烯制备丁二烯的方法，其包括以下步骤：A）提供包含正丁烯的输入气流（a），B）将包含正丁烯的输入气流（a）和 将至少含氧的气体送入至少一个氧化脱氢区并将正丁烯氧化脱氢成丁二烯，其中产物气流（b）包含丁二烯，未转化的正丁烯，水蒸气，氧气，低沸点烃和高沸点 获得次要组分，任选的碳氧化物和任选的惰性气体; Ca）通过在至少一个冷却区中与冷却介质接触来冷却产物气流（b），冷却介质至少部分地再循环并且具有水相和有机相; Cb）压缩在至少一个压缩阶段中可能已经耗尽高沸点次要组分的冷却产物气流（b），得到至少一种含水冷凝物流（c1）和一种包含丁二烯的气体流（c2），n 丁烯，水蒸汽，氧气和低沸点烃，任选的碳氧化物和任选的惰性气体; D）通过吸收包含丁二烯的C4烃作为来自气流（c2）的气流（d2），从气体流（c2）中除去含有氧气和低沸点烃的含有或不含有碳氧化物和有或没有惰性气体的不可冷凝和低沸点气体成分 和正丁烯在吸收剂中反应，产生充满C4烃和气体物流（d2）的吸收剂物流，然后从装载的吸收剂物流中解吸出C4烃，得到C4产物气流（d1），E） C4产物流（d1）通过用丁二烯选择性溶剂萃取蒸馏到包含丁二烯和选择性溶剂的物流（e1）和包含正丁烯的物流（e2）中; F）将包含丁二烯和选择性溶剂的物流（e1）蒸馏成基本上由选择性溶剂组成的物流（f1）和包含丁二烯的物流（f2），其特征在于该步骤Cb）包括至少两个压缩阶段Cba）和 在冷却阶段中设计为骤冷塔的至少两个冷却阶段Cbb）通过与具有水相和有机相的两相冷却介质直接接触而进行冷却。

    VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG
    10.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG 有权
    VERFAHREN ZUR HERSTELLUNG冯1,3-BUTADIEN澳大利亚N-BUTENEN DURCH氧化剂DEHYDRIERUNG

    公开(公告)号：EP3063112A1

    公开(公告)日：2016-09-07

    申请号：EP14790068.2

    申请日：2014-10-27

    申请人： BASF SE

    发明人： GRÜNE, Philipp ,  HAMMEN, Oliver ,  SCHMITT, Christine ,  BALEGEDDE RAMACHANDRAN, Ragavendra Prasad ,  JOSCH, Jan Pablo ,  WALSDORFF, Christian

    IPC分类号： C07C5/327 ,  C07C5/333 ,  C07C11/167

    CPC分类号： C07C5/48 ,  B01J23/002 ,  B01J23/8878 ,  B01J37/0045 ,  B01J2523/00 ,  C07C7/08 ,  C07C7/11 ,  C07C2523/04 ,  C07C2523/18 ,  C07C2523/26 ,  C07C2523/28 ,  C07C2523/745 ,  C07C2523/75 ,  C07C2523/887 ,  C07C11/167 ,  B01J2523/13 ,  B01J2523/54 ,  B01J2523/67 ,  B01J2523/68 ,  B01J2523/842 ,  B01J2523/845

    摘要： 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.

    摘要翻译： 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％。