Method for Producing Butadiene From N-Butane
    1.
    发明申请
    Method for Producing Butadiene From N-Butane 有权
    从丁烷生产丁二烯的方法

    公开(公告)号:US20070244349A1

    公开(公告)日:2007-10-18

    申请号:US11718814

    申请日:2005-11-11

    IPC分类号: C07C5/333 C07C11/167

    CPC分类号: C07C7/09 C07C5/333 C07C11/167

    摘要: Processes for producing butadiene from n-butane comprising: (a) providing a feed gas stream comprising n-butane; (b) non-oxidatively dehydrogenating the feed gas stream in the presence of a catalyst in a first dehydrogenation zone to form a first intermediate gas stream comprising n-butane, 1-butene, 2-butene, butadiene and hydrogen; (c) oxidatively dehydrogenating the first intermediate gas stream in the presence of an oxygenous gas having an oxygen content of at least 75% by volume in a second dehydrogenation zone to form a second intermediate gas stream comprising n-butane, butadiene, hydrogen, carbon dioxide and steam; (d) compressing and cooling the second intermediate gas to form a first condensate stream comprising water and a third intermediate gas stream comprising n-butane, butadiene, hydrogen, carbon dioxide and steam; (e) compressing and cooling the third intermediate gas to form a second condensate stream comprising n-butane, butadiene and water and a fourth intermediate gas stream comprising n-butane, butadiene, hydrogen and carbon dioxide; (f) cooling the fourth intermediate gas stream to form a third condensate stream comprising n-butane and butadiene, and an offgas stream comprising carbon dioxide and hydrogen; (g) removing water from the second condensate stream and combining the second condensate stream and third condensate stream to form a C4 hydrocarbon stream comprising n-butane and butadiene; and (h) separating the C4 hydrocarbon stream to form a recycle stream comprising n-butane and a product stream comprising butadiene; wherein at least a portion of the recycle stream is fed to the first dehydrogenation zone.

    摘要翻译: 用于从正丁烷生产丁二烯的方法包括:(a)提供包含正丁烷的进料气流; (b)在催化剂存在下在第一脱氢区中使进料气流非氧化脱氢,以形成包含正丁烷,1-丁烯,2-丁烯,丁二烯和氢的第一中间气流; (c)在第二脱氢区中在氧含量至少为75体积%的氧气存在下,使第一中间气流氧化脱氢以形成包含正丁烷,丁二烯,氢,碳的第二中间气流 二氧化碳和蒸汽; (d)压缩和冷却第二中间气体以形成包含水的第一冷凝物流和包含正丁烷,丁二烯,氢气,二氧化碳和蒸汽的第三中间气流; (e)压缩和冷却第三中间气体以形成包含正丁烷,丁二烯和水的第二冷凝物流和包含正丁烷,丁二烯,氢气和二氧化碳的第四中间气流; (f)冷却第四中间气流以形成包含正丁烷和丁二烯的第三冷凝物流和包含二氧化碳和氢气的废气流; (g)从第二冷凝物流中除去水并将第二冷凝物流和第三冷凝物流合并以形成包含正丁烷和丁二烯的C 4烃流; 和(h)分离C 4 O 4烃流以形成包含正丁烷和包含丁二烯的产物流的再循环料流; 其中所述再循环流的至少一部分被供给到所述第一脱氢区。

    Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof
    2.
    发明授权
    Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof 失效
    用于生产马来酸酐的催化剂前体及其制备方法

    公开(公告)号:US07157403B2

    公开(公告)日:2007-01-02

    申请号:US10507609

    申请日:2003-03-12

    IPC分类号: B01J27/198 C07D307/60

    摘要: A process for preparing a vanadium, phosphorus, and oxygen catalyst precursor for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms, by reacting vanadium pentoxide (I) in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms (II) with a pentavalent or trivalent phosphorus compound (III) in a temperature range from 80 to 160° C. with stirring and subsequently filtering the resultant suspension, in which (a) the way in which the phosphorus compound (III) and the vanadium pentoxide (I) are combined in the presence of the alcohol (II), (b) the action of a stirring power of from 0.01 to 0.6 W/kg suspension, and/or (c) the filtration at a temperature from 65° C. to 160° C. are used to set a filtration resistance αH·η of

    摘要翻译: 通过在一次或二次存在下使五氧化二钒(I)反应,通过使具有至少四个碳原子的烃的非均相催化气相氧化来制备用于制备马来酸酐的钒,磷和氧催化剂前体的方法, 具有3至6个碳原子的非环状或环状,无支链或支链的饱和醇(II)与五价或三价磷化合物(III)在80至160℃的温度范围内搅拌并随后过滤得到的悬浮液, 其中(a)在醇(II)的存在下将磷化合物(III)和五氧化二钒(I)组合的方式,(b)搅拌功率为0.01至0.6W / kg悬浮液,和/或(c)在65℃至160℃的温度下进行过滤,以设定过滤阻力<50% / SUP> mPa.s / m 2; 从该方法获得的催化剂前体; 从催化剂前体制备催化剂的方法; 可从该方法获得的催化剂; 以及在该催化剂上制备马来酐的方法。

    Method for the production of a catalyst containing vanadium, phosphorus, and oxygen
    4.
    发明授权
    Method for the production of a catalyst containing vanadium, phosphorus, and oxygen 失效
    用于生产含有钒,磷和氧的催化剂的方法

    公开(公告)号:US07060649B2

    公开(公告)日:2006-06-13

    申请号:US10507601

    申请日:2003-03-12

    摘要: Disclosed is a method for producing a catalyst containing vanadium, phosphorus, and oxygen, which is used for oxidizing the gas phase of a hydrocarbon having at least four carbon atoms to maleic anhydride. According to the inventive method, a corresponding catalyst precursor which contains vanadium, phosphorus, and oxygen and is provided with particles having an average diameter of at least 2 mm is converted into a catalytically active form by means of calcination, and a flow of the catalyst precursor is transported on a conveyor belt across at least one calcination area over a distance 1n at an essentially steady speed in order to be calcinated. The variation over time of the gas temperature in relation to the set point value amounts to ≦5° C. at each position in the area of the flow of the catalyst precursor, which lies within the second half 1n/2 of the calcination area, while the local difference in the gas temperature between any positions in the area of the flow of the catalyst precursor, which is located within the second half 1n/2 of the calcination area, amounts to ≦5° C.

    摘要翻译: 公开了一种用于生产含有钒,磷和氧的催化剂的方法,其用于将具有至少四个碳原子的烃的气相氧化为马来酸酐。 根据本发明的方法,将含有钒,磷和氧并且具有平均直径至少为2mm的颗粒的相应催化剂前体通过煅烧转化为催化活性形式,并且催化剂流 前驱体在传送带上以基本上稳定的速度穿过至少一个煅烧区域在距离1&lt; N&gt;运输,以便被煅烧。 气体温度随时间的变化相对于设定点值在催化剂前体的流动区域内的每个位置处为<= 5℃,位于第二半 SUB> / 2,而位于催化剂前体的流动区域内的任何位置之间的气体温度的局部差异位于第二半 煅烧面积等于<= 5℃

    Electrocatalytic selective oxidation of hydrocarbons
    5.
    发明授权
    Electrocatalytic selective oxidation of hydrocarbons 失效
    碳氢化合物的电催化选择性氧化

    公开(公告)号:US06210557B1

    公开(公告)日:2001-04-03

    申请号:US09395214

    申请日:1999-09-14

    IPC分类号: C25B300

    摘要: A process for the electrochemical oxidation of organic compounds, wherein the anode material used is a mixed oxide of formula (I) MoaBibX1cX2dX3eX4fX5gOh  (I) where X1 is V, Nb, Cr, W, Ta, Ga, Ce, and/or La; X2 is Li, La, K, Rb, Cs, Cu, Ag, Au, Pd and/or Pt; X3 is Fe, Co, Ni and/or Zn; X4 is Sn, Rb, Sb and/or Te; X5 is Ti, Zr, Si and/or Al; and where a is 0-3; b is 0-3; c is 0-12.5; d is 0-5; e is 0-1.5; f is 0-1; and g is 0-25 with the proviso that a+d≧0.15.

    摘要翻译: 一种用于有机化合物的电化学氧化的方法,其中所用的阳极材料是式(I)的混合氧化物,其中X 1是V,Nb,Cr,W,Ta,Ga,Ce和/或La; X2是Li,La,K,Rb,Cs,Cu,Ag,Au,Pd和/或Pt; X3是Fe,Co,Ni和/或Zn; X4是Sn,Rb,Sb和/或Te; X5是Ti,Zr,Si和/或Al; 而a为0-3; b为0-3; c为0-12.5; d为0-5; e为0-1.5; f为0-1; 而g为0-25,条件是a + d> = 0.15。

    Method for producing butadiene from n-butane
    6.
    发明授权
    Method for producing butadiene from n-butane 失效
    从正丁烷生产丁二烯的方法

    公开(公告)号:US08088962B2

    公开(公告)日:2012-01-03

    申请号:US11813935

    申请日:2006-01-16

    IPC分类号: C07C5/333

    摘要: A process for preparing butadiene, comprising A) providing a stream (a) comprising n-butane; B) feeding stream (a) comprising into at least one first dehydrogenation zone and nonoxidatively catalytically dehydrogenating n-butane to obtain a stream (b) comprising n-butane, 1-butene, 2-butene, butadiene, hydrogen and low-boiling secondary constituents; C) feeding stream (b) and an oxygenous gas into at least one second dehydrogenation zone and oxidatively dehydrogenating n-butane, 1-butene and 2-butene to obtain a stream (c) comprising n-butane, 2-butene, butadiene, low-boiling secondary constituents, carbon oxides and steam, wherein stream (c) has a higher content of butadiene than stream (b); D) removing the low-boiling secondary constituents and steam to obtain a stream (d) substantially consisting of n-butane, 2-butene and butadiene; E) separating stream (d) into a stream (e1) consisting substantially of n-butane and 2-butene and a stream (e2) consisting substantially of butadiene by extractive distillation; F) recycling stream (e1) into the first dehydrogenation zone.

    摘要翻译: 一种制备丁二烯的方法,包括A)提供包含正丁烷的料流(a); B)将包含至少一个第一脱氢区和非氧化催化脱氢的正丁烷的料流(a)进料,以获得包含正丁烷,1-丁烯,2-丁烯,丁二烯,氢和低沸点二级 成分; C)将进料流(b)和氧气送入至少一个第二脱氢区,并使正丁烷,1-丁烯和2-丁烯氧化脱氢得到包含正丁烷,2-丁烯,丁二烯, 低沸点次级成分,碳氧化物和蒸汽,其中物流(c)具有比物流(b)更高的丁二烯含量; D)除去低沸点二次成分和蒸汽,得到基本上由正丁烷,2-丁烯和丁二烯组成的料流(d); E)通过萃取蒸馏将料流(d)分离成基本上由正丁烷和2-丁烯组成的料流(e1)和基本上由丁二烯组成的料流(e2); F)再循环流(e1)进入第一脱氢区。

    Method for producing butadiene from n-butane
    7.
    发明授权
    Method for producing butadiene from n-butane 有权
    从正丁烷生产丁二烯的方法

    公开(公告)号:US07495138B2

    公开(公告)日:2009-02-24

    申请号:US11722278

    申请日:2005-12-19

    IPC分类号: C07C5/333

    CPC分类号: C07C5/333 C07C11/167

    摘要: A process for preparing butadiene, comprising nonoxidatively dehydrogenating n-butane from a stream (a) in a first dehydrogenation zone to obtain stream (b) comprising 1-butene, 2-butene, and butadiene; oxidatively dehydrogenating the 1-butene and 2-butene of (b) in the presence of an oxygenous gas in a second dehydrogenation zone to obtain stream (c) comprising n-butane, butadiene, hydrogen, and steam; compressing and cooling (c) to obtain stream (d2) comprising n-butane, butadiene, hydrogen, and steam; extractively distilling (d2) into stream (e1) comprising butadiene and stream (e2) comprising n-butane, hydrogen, and steam; optionally compressing and cooling (e2) to obtain stream (f1) comprising n-butane and water and stream (f2) comprising n-butane and hydrogen and optionally recycling (f1) into the first dehydrogenation zone; separating (f2) into stream (g1) comprising n-butane and stream (g2) comprising hydrogen by contacting (f2) with a high boiling absorbent and subsequently desorbing the gas constituents dissolved in the absorbent.

    摘要翻译: 一种制备丁二烯的方法,包括在第一脱氢区中从流(a)中非氧化脱氢的正丁烷获得包含1-丁烯,2-丁烯和丁二烯的料流(b) 在第二脱氢区中在有氧气体存在下使(b)的1-丁烯和2-丁烯氧化脱氢,得到包含正丁烷,丁二烯,氢和蒸汽的料流(c) 压缩并冷却(c)以获得包含正丁烷,丁二烯,氢气和蒸汽的流(d2); 将包含丁二烯的流(e1)和包含正丁烷,氢气和蒸汽的物流(e2)萃取蒸馏(d2) 任选地压缩和冷却(e2)以获得包含正丁烷和水的流(f1)和包含正丁烷和氢气的流(f2),并任选地再循环(f1)到第一脱氢区中; 通过使(f2)与高沸点吸收剂接触并随后解吸溶解在吸收剂中的气体组分,将(f2)分离成包含正丁烷和包含氢的流(g2)(g1)的流(g1)。

    In situ recoating of catalyst beds
    9.
    发明申请
    In situ recoating of catalyst beds 失效
    催化剂床的原位重涂

    公开(公告)号:US20060205586A1

    公开(公告)日:2006-09-14

    申请号:US10551858

    申请日:2004-04-02

    IPC分类号: B01J38/48

    摘要: A process for coating internals in a reactor, except for the coating of electrically heatable, at least partly open-cell foams, with a catalytically active material or a precursor thereof is described, in which an aerosol which contains, as a disperse phase, the catalytically active material or the precursor thereof is provided and the aerosol is passed through the reactor at a velocity which is established so that the disperse phase of the aerosol is deposited on the internals in the reactor.

    摘要翻译: 描述了用催化活性材料或其前体在反应器中涂覆内部材料的方法,除了电可加热的至少部分开放泡沫的涂层,其中包含作为分散相的气溶胶, 提供了催化活性材料或其前体,气雾剂以一定速度通过反应器,使得气溶胶的分散相沉积在反应器内部。