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1. 发明授权

US07060649B2 Method for the production of a catalyst containing vanadium, phosphorus, and oxygen 失效
标题翻译：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
申请人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner , Raimund Felder
发明人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner , Raimund Felder
IPC分类号： B01J27/198 , B30B15/30 , F16P3/00 , F16P3/18 , F16P3/05
CPC分类号： B01J8/10 , B01J8/067 , B01J19/22 , B01J27/198 , B01J35/023 , B01J35/026 , B01J35/1014 , B01J35/1038 , B01J37/0009 , B01J37/08 , B01J37/14 , B01J37/18 , B01J2208/00849 , B01J2208/00876 , B01J2219/182 , C07C51/215 , C07C51/252 , C07C57/145
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℃

2. 发明申请

US20050153834A1 Method for the production of a catalyst containing vanadium, phosphorus, and oxygen 失效
标题翻译：用于生产含有钒，磷和氧的催化剂的方法
公开(公告)号：US20050153834A1
公开(公告)日：2005-07-14
申请号：US10507601
申请日：2003-03-12
申请人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner , Raimund Felder
发明人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner , Raimund Felder
IPC分类号： C07D307/60 , B01J27/198 , B01J35/02 , B01J35/10 , B01J37/00 , B01J37/08 , B01J37/14 , B01J37/18 , C07C51/215 , C07C51/25
CPC分类号： B01J8/10 , B01J8/067 , B01J19/22 , B01J27/198 , B01J35/023 , B01J35/026 , B01J35/1014 , B01J35/1038 , B01J37/0009 , B01J37/08 , B01J37/14 , B01J37/18 , B01J2208/00849 , B01J2208/00876 , B01J2219/182 , C07C51/215 , C07C51/252 , C07C57/145
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 ln 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 ln/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 lnn/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一定距离上被运输，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℃，其位于第二半导体区域内， SUB> / 2，而位于第二半层之间的催化剂前体的流动区域中的任何位置之间的气体温度的局部差异的煅烧面积相当于<= 5℃

3. 发明授权

US07169732B2 Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof 有权
标题翻译：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：US07169732B2
公开(公告)日：2007-01-30
申请号：US10507610
申请日：2003-03-12
申请人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
发明人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
IPC分类号： B01J27/18 , C07D307/60
CPC分类号： C07C51/252 , B01J23/002 , B01J27/198 , B01J35/002 , B01J35/1014 , B01J37/0018 , B01J37/031 , B01J2523/00 , C07C51/215 , C07C57/145 , B01J2523/51 , B01J2523/55
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, which comprises (a) reacting vanadium pentoxide with from 102 to 110% strength phosphoric acid in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) setting an organic carbon content of ≦1.1% by weight in the isolated precipitate by heat treatment in a temperature range from 250 to 350° C., the heat-treated product, following the addition of 3.0% by weight of graphite, giving a powder X-ray diffraction diagram which in the 2θ region features a ratio of the height of the peak of any pyrophosphate phase present at 28.5° to the height of the peak due to the graphite at 26.6° of ≦0.1; and (d) shaping the heat-treated product obtained from step (c) into particles having an averaged diameter of at least 2 mm; a catalyst precursor obtainable from this process; a process for preparing a catalyst from the catalyst precursor; a catalyst obtainable from that process; and also a process for preparing maleic anhydride over that catalyst.
摘要翻译：一种制备用于通过异构催化气相氧化具有至少四个碳原子的烃来制备马来酸酐的钒，磷和氧催化剂前体的方法，其包括（a）使五氧化二钒与102-110％强度的磷酸在80至160℃的温度范围内在具有3至6个碳原子的伯或仲，非环或环状，无支链或支链的饱和醇存在下进行酸反应。（b）分离形成的沉淀物; （c）通过在250-350℃的温度范围内通过热处理将分离的沉淀物中的有机碳含量<= 1.1重量％设定为热处理产物，添加3.0重量％的石墨，给出粉末X射线衍射图，其在2θ区域的特征是存在于28.5°的任何焦磷酸盐相的峰的高度与由于石灰在26.6°<= 0.1处的峰的高度之比; 和（d）将由步骤（c）获得的热处理产物成型为具有至少2mm的平均直径的颗粒; 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酸酐的方法。

4. 发明申请

US20050222435A1 Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof 失效
标题翻译：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：US20050222435A1
公开(公告)日：2005-10-06
申请号：US10507609
申请日：2003-03-12
申请人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
发明人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
IPC分类号： C07D307/60 , B01J27/198 , B01J35/10 , B01J37/00 , B01J37/04 , B01J37/08 , C07B61/00 , C07C51/215 , C07C51/25 , C07D307/34
CPC分类号： C07C51/252 , B01J23/002 , B01J27/198 , B01J35/1014 , B01J35/1038 , B01J37/0009 , B01J37/009 , B01J37/08 , B01J2523/00 , C07C51/215 , C07C57/145 , B01J2523/51 , B01J2523/55
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酸酐的方法。

5. 发明申请

US20050222436A1 Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof 有权
标题翻译：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：US20050222436A1
公开(公告)日：2005-10-06
申请号：US10507610
申请日：2003-03-12
申请人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
发明人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
IPC分类号： C07D307/60 , B01J27/198 , B01J35/00 , B01J35/02 , B01J35/10 , B01J37/00 , B01J37/03 , B01J37/08 , C07B61/00 , C07C51/215 , C07C51/25 , C07D307/34
CPC分类号： C07C51/252 , B01J23/002 , B01J27/198 , B01J35/002 , B01J35/1014 , B01J37/0018 , B01J37/031 , B01J2523/00 , C07C51/215 , C07C57/145 , B01J2523/51 , B01J2523/55
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, which comprises (a) reacting vanadium pentoxide with from 102 to 110% strength phosphoric acid in the presence of a primary or secondary, noncyclic or cyclic, unbranched or branched, saturated alcohol having from 3 to 6 carbon atoms in a temperature range from 80 to 160° C.; (b) isolating the precipitate formed; (c) setting an organic carbon content of ≦1.1% by weight in the isolated precipitate by heat treatment in a temperature range from 250 to 350° C., the heat-treated product, following the addition of 3.0% by weight of graphite, giving a powder X-ray diffraction diagram which in the 2θ region features a ratio of the height of the peak of any pyrophosphate phase present at 28.5° to the height of the peak due to the graphite at 26.6° of ≦0.1; and (d) shaping the heat-treated product obtained from step (c) into particles having an averaged diameter of at least 2 mm; a catalyst precursor obtainable from this process; a process for preparing a catalyst from the catalyst precursor; a catalyst obtainable from that process; and also a process for preparing maleic anhydride over that catalyst.
摘要翻译：一种制备用于通过异构催化气相氧化具有至少四个碳原子的烃来制备马来酸酐的钒，磷和氧催化剂前体的方法，其包括（a）使五氧化二钒与102-110％强度的磷酸在80至160℃的温度范围内在具有3至6个碳原子的伯或仲，非环或环状，无支链或支链的饱和醇存在下进行酸反应。（b）分离形成的沉淀物; （c）通过在250-350℃的温度范围内通过热处理将分离的沉淀物中的有机碳含量<= 1.1重量％设定为热处理产物，添加3.0重量％的石墨，给出粉末X射线衍射图，其在2θ区域的特征是存在于28.5°的任何焦磷酸盐相的峰的高度与由于石灰在26.6°<= 0.1处的峰的高度之比; 和（d）将由步骤（c）获得的热处理产物成型为具有至少2mm的平均直径的颗粒; 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酸酐的方法。

6. 发明授权

US07157403B2 Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof 失效
标题翻译：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
申请人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
发明人： Jens Weiguny , Sebastian Storck , Mark Duda , Cornelia Dobner
IPC分类号： B01J27/198 , C07D307/60
CPC分类号： C07C51/252 , B01J23/002 , B01J27/198 , B01J35/1014 , B01J35/1038 , B01J37/0009 , B01J37/009 , B01J37/08 , B01J2523/00 , C07C51/215 , C07C57/145 , B01J2523/51 , B01J2523/55
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。

7. 发明申请

US20080227992A1 Catalyst and Methods for Producing Maleic Anhydride 审中-公开
标题翻译：用于生产马来酸酐的催化剂和方法
公开(公告)号：US20080227992A1
公开(公告)日：2008-09-18
申请号：US11997023
申请日：2006-07-21
申请人： Cornelia Dobner , Mark Duda , Andreas Raichle , Hagen Wilmer , Frank Rosowski , Markus Holzle
发明人： Cornelia Dobner , Mark Duda , Andreas Raichle , Hagen Wilmer , Frank Rosowski , Markus Holzle
IPC分类号： C07D307/60 , B01J27/198 , B01J27/16
CPC分类号： B01J37/0009 , B01J23/002 , B01J23/8472 , B01J27/198 , B01J35/002 , B01J37/031 , B01J37/04 , B01J37/16 , B01J2523/00 , C07C51/215 , C07C57/145 , B01J2523/51 , B01J2523/55 , B01J2523/842
摘要： Catalysts comprising a catalytically active composition, the catalytically active composition comprising vanadium, phosphorus, iron and oxygen, wherein the catalytically active composition has an iron:vanadium atomic ratio of 0.005 to
摘要翻译：包含催化活性组合物的催化剂，包含钒，磷，铁和氧的催化活性组合物，其中催化活性组合物的铁：钒原子比为0.005至0.05，并且其中催化活性组合物中的铁衍生自铁原料，包含磷酸铁（III）; 并描述了制备这种催化剂的方法及其用途来制备马来酸酐。

8. 发明申请

US20050256319A1 Method for producing maleic anhydride 有权
公开(公告)号：US20050256319A1
公开(公告)日：2005-11-17
申请号：US10522993
申请日：2003-07-22
申请人： Jens Weiguny , Wilhelm Ruppel , Mark Duda
发明人： Jens Weiguny , Wilhelm Ruppel , Mark Duda
IPC分类号： C07B61/00 , C07D307/60 , C07D307/36
CPC分类号： C07D307/60
摘要： Process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of hydrocarbons having at least four carbon atoms by means of oxygen-containing gases at from 350 to 500° C. in the presence of a volatile phosphorus compound over a vanadium-, phosphorus- and oxygen-containing catalyst in a shell-and-tube reactor unit having at least one reaction zone cooled by means of a heat transfer medium, in which the temperature and/or the amount of the heat transfer medium flowing into the first (relative to the feed direction) reaction zone are set so that the mean temperature of the heat transfer medium in the first reaction zone TSB(1st zone), which is calculated as the mean of the inflow temperature and the outflow temperature of the heat transfer medium, is in accordance with the formulae (I) and (II) TSB(1st zone)≦TR(1st zone)−TSafety(1st zone) (I) TSB, Ymax(1st zone)−TA(1st zone)≦TSB(1st zone)≦TSB, Ymax(1st zone)+TB(1st zone) (II), where TR(1st zone) is the runaway temperature of the first reaction zone; TSafety(1st zone) is the safety temperature of the first reaction zone and has a value of 1° C.; TSB, Ymax(1st zone) is the mean temperature of the heat transfer medium in the first reaction zone at which the maximum maleic anhydride yield is achieved in the range TSB(1st zone)≦TR(1st zone); TA(1st zone) is 20° C.; and TB(1st zone) is 10° C.

9. 发明授权

US07087767B2 Method for producing maleic anhydride 有权
公开(公告)号：US07087767B2
公开(公告)日：2006-08-08
申请号：US10522993
申请日：2003-07-22
申请人： Jens Weiguny , Wilhelm Ruppel , Mark Duda
发明人： Jens Weiguny , Wilhelm Ruppel , Mark Duda
IPC分类号： C07D307/60
CPC分类号： C07D307/60
摘要： Process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of hydrocarbons having at least four carbon atoms by means of oxygen-containing gases at from 350 to 500° C. in the presence of a volatile phosphorus compound over a vanadium-, phosphorus- and oxygen-containing catalyst in a shell-and-tube reactor unit having at least one reaction zone cooled by means of a heat transfer medium, in which the temperature and/or the amount of the heat transfer medium flowing into the first (relative to the feed direction) reaction zone are set so that the mean temperature of the heat transfer medium in the first reaction zone TSB(1st zone), which is calculated as the mean of the inflow temperature and the outflow temperature of the heat transfer medium, is in accordance with the formulae (I) and (II) TSB(1st zone)≦TR(1st zone)−TSafety(1st zone) (I) TSB, Ymax(1st zone)−TA(1st zone)≦TSB(1st zone)≦TSB, Ymax(1st zone)+TB(1st zone), (II) where TR(1st zone) is the runaway temperature of the first reaction zone; TSafety(1st zone) is the safety temperature of the first reaction zone and has a value of 1° C.; TSB, Ymax(1st zone) is the mean temperature of the heat transfer medium in the first reaction zone at which the maximum maleic anhydride yield is achieved in the range TSB(1st zone)≦TR(1st zone); TA(1st zone) is 20° C.; and TB(1st zone) is 10° C.

10. 发明申请

US20070244349A1 Method for Producing Butadiene From N-Butane 有权
标题翻译：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
申请人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
发明人： Sven Crone , Catharina Klanner , Gotz-Peter Schindler , Mark Duda , Frieder Borgmeier
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。

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