公开(公告)号：US20070276158A1

公开(公告)日：2007-11-29

申请号：US11752391

申请日：2007-05-23

申请人： Michel Haas ,  Dietmar Wastian ,  Tim Loddenkemper ,  Bernd Ruffer

发明人： Michel Haas ,  Dietmar Wastian ,  Tim Loddenkemper ,  Bernd Ruffer

IPC分类号： C07C51/58

CPC分类号： C01B7/0706 ,  B01D53/62 ,  B01D2251/502 ,  B01D2257/502 ,  C01B32/80 ,  Y02A50/2341

摘要： Processes for separating carbon monoxide from a hydrogen chloride-containing gas, which comprise reacting the carbon monoxide with chlorine to form phosgene and then optionally separating the phosgene from the hydrogen chloride-containing gas. The hydrogen chloride-containing gas that is used preferably derives from a phosgenation or isocyanate forming reaction.

摘要翻译： 用于从含氯化氢的气体中分离一氧化碳的方法，其包括使一氧化碳与氯气反应以形成光气，然后任选地从含氯化氢的气体中分离光气。 所用的含氯化氢的气体优选来自光气化或异氰酸酯形成反应。

公开(公告)号：US07041858B1

公开(公告)日：2006-05-09

申请号：US11054012

申请日：2005-02-09

申请人： Juergen Muennig ,  Bernd Pennemann ,  Dietmar Wastian ,  Volker Michele ,  Jesse Caravaggio ,  John F. Gisch, Jr.

发明人： Juergen Muennig ,  Bernd Pennemann ,  Dietmar Wastian ,  Volker Michele ,  Jesse Caravaggio ,  John F. Gisch, Jr.

IPC分类号： C07C205/00

CPC分类号： C07C201/08 ,  C07C205/06

摘要： The present invention is directed to a process for the isothermal nitration of aromatic organic compounds, wherein an aromatic organic compound is brought into contact and reacted with a mixture of sulfuric acid and nitric acid. The mixture of sulfuric acid and nitric acid, and the aromatic organic compound are brought into contact with each other through a mixing nozzle which comprises a substantially cylindrical tubular reactor and an annular gap which surrounds the tubular reactor. The aromatic organic compound flows through the tubular reactor, and the mixture of sulfuric acid and nitric acid flows through the annular gap, and they are mixed together upon emerging from the tubular reactor and the annular gap, wherein the ratio of the average rates of flow of the aromatic organic compound in the tubular reactor, and of the mixture of sulphuric acid and nitric acid in the annular gap ranges from 0.5:1 to 10:1.

摘要翻译： 本发明涉及芳族有机化合物的等温硝化方法，其中使芳族有机化合物与硫酸和硝酸的混合物接触并反应。 硫酸和硝酸的混合物和芳香族有机化合物通过混合喷嘴相互接触，所述混合喷嘴包括基本上圆柱形的管式反应器和围绕管状反应器的环形间隙。 芳族有机化合物流过管状反应器，硫酸和硝酸的混合物流过环形间隙，并且在从管式反应器和环形间隙出现时将它们混合在一起，其中平均流速 的管状反应器中的芳族有机化合物，以及环状间隙中的硫酸和硝酸的混合物的范围为0.5:1至10:1。

公开(公告)号：US08097751B2

公开(公告)日：2012-01-17

申请号：US11171572

申请日：2005-06-30

申请人： Daniel Koch ,  Spotswood Miller ,  Ricardo Serra ,  Dietmar Wastian ,  Jürgen Kirsch ,  Gerhard Wegener

发明人： Daniel Koch ,  Spotswood Miller ,  Ricardo Serra ,  Dietmar Wastian ,  Jürgen Kirsch ,  Gerhard Wegener

IPC分类号： C07C249/00

CPC分类号： C07C263/10 ,  C07C265/14

摘要： A two-stage process for the preparation of organic isocyanates by reacting primary amines with phosgene in which: a) in a first stage, amine and phosgene are reacted in an adiabatically managed reaction, in which the temperature of reaction is restricted to values between 100 and 220° C. by actively adjusting the absolute pressure in the reactor to values between 8 and 50 bar by decompression, and the temperature is held at values between 100 and 220° C. until the stoichiometric conversion of phosgene has reached at least 80%; and then b) in a second stage, the reaction mixture from a) is decompressed to an absolute pressure of 1 to 15 bar and the reaction mixture is reacted further at temperatures between 90 and 240° C., optionally with the introduction of heat.

摘要翻译： 通过使伯胺与光气反应来制备有机异氰酸酯的两阶段方法，其中：a）在第一阶段中，胺和光气在绝热管理的反应中反应，其中反应温度限于100 通过减压将反应器中的绝对压力积极调节至8巴和50巴之间，并将温度保持在100至220℃之间，直到光气的化学计量转化率达到至少80％ ; 然后b）在第二阶段中，将来自a）的反应混合物减压至1至15巴的绝对压力，并且反应混合物进一步在90-240℃的温度下进行反应，任选地加热。

公开(公告)号：US06953869B2

公开(公告)日：2005-10-11

申请号：US10878079

申请日：2004-06-28

申请人： Jürgen Münnig ,  Dietmar Wastian ,  Wolfgang Lorenz ,  Berthold Keggenhoff

发明人： Jürgen Münnig ,  Dietmar Wastian ,  Wolfgang Lorenz ,  Berthold Keggenhoff

IPC分类号： C07C201/08 ,  C02F1/26 ,  C02F1/66 ,  C02F9/00 ,  C07C201/16 ,  C07C205/06 ,  C07C205/00

CPC分类号： C02F1/26 ,  C02F1/66 ,  C02F9/00 ,  C02F2103/36 ,  C07C201/16 ,  C07C205/06

摘要： The present invention relates to a process for working up organic secondary components which are formed in the one-stage or two-stage nitration of toluene to dinitrotoluene. These organic secondary components are present in the acidic and alkaline waste water from the dinitrotoluene washing step and in the aqueous distillate from the sulfuric acid concentration step, together with small amounts of mononitrotoluene and dinitrotoluene. This process comprises a) combining the acidic and alkaline waste waters from the washing step and the aqueous distillate from the sulfuric acid concentration step such that the resulting mixture has a pH below 5, b) separating the aqueous and organic phases which form by phase separation, and c) recycling the organic phase from step b) into the nitration process.

摘要翻译： 本发明涉及一种处理甲苯一硝基甲苯硝化成二硝基甲苯形成有机二次成分的方法。 这些有机次要组分存在于来自二硝基甲苯洗涤步骤的酸性和碱性废水中以及来自硫酸浓缩步骤的含水馏出物中，以及少量的一硝基甲苯和二硝基甲苯。 该方法包括：a）从硫酸浓缩步骤中将洗涤步骤的酸性和碱性废水与含水馏出物混合，使得所得混合物的pH值低于5，b）分离通过相分离形成的水相和有机相 ，和c）将来自步骤b）的有机相再循环到硝化过程中。

公开(公告)号：US06936741B2

公开(公告)日：2005-08-30

申请号：US10878211

申请日：2004-06-28

申请人： Jürgen Münnig ,  Dietmar Wastian ,  Wolfgang Lorenz ,  Berthold Keggenhoff

发明人： Jürgen Münnig ,  Dietmar Wastian ,  Wolfgang Lorenz ,  Berthold Keggenhoff

IPC分类号： B01D19/00 ,  B01D11/04 ,  C02F1/20 ,  C02F1/26 ,  C02F1/52 ,  C02F9/00 ,  C07C201/06 ,  C07C201/16 ,  C07C205/00

CPC分类号： C02F1/26 ,  C02F1/66 ,  C02F9/00 ,  C02F2103/36 ,  C07C201/16 ,  C07C205/06 ,  C07C205/22 ,  C07C205/24 ,  C07C205/57

摘要： The present invention relates to a process for working up or treating aqueous waste waters which are formed during the nitration of toluene to dinitrotoluene with nitrating acid. These aqueous waste waters containing acidic wash water and alkaline wash water from the dinitrotoluene washing step, and distillate from the sulfuric acid concentration step. The process comprises, a) combining the acidic and alkaline waste waters from the washing step and the aqueous distillate from the sulfuric acid concentration step such that the resulting mixture has a pH below 5, b) separating the aqueous and organic phases which are formed by phase separation, c) subjecting the aqueous phase from b) to an extraction step, wherein d) the organic components contained in the aqueous phase from c) are extracted with toluene, and e) introducing the toluene phase enriched with the organic components into the toluene nitration.

摘要翻译： 本发明涉及一种处理或处理在用硝酸将甲苯硝化成二硝基甲苯期间形成的废水的处理方法。 这些含有来自二硝基甲苯洗涤步骤的酸性洗涤水和碱性洗涤水的含水废水，以及来自硫酸浓缩步骤的馏出物。 该方法包括：a）将来自洗涤步骤的酸性和碱性废水与来自硫酸浓缩步骤的含水馏出物混合，使得所得混合物的pH值低于5，b）将由下式形成的水相和有机相分离： 相分离，c）使来自b）的水相进行萃取步骤，其中d）来自c）的水相中含有的有机组分用甲苯萃取，e）将富含有机组分的甲苯相引入 甲苯硝化。

公开(公告)号：US20060025556A1

公开(公告)日：2006-02-02

申请号：US11171572

申请日：2005-06-30

申请人： Daniel Koch ,  Spotswood Miller ,  Ricardo Serra ,  Dietmar Wastian ,  Jurgen Kirsch ,  Gerhard Wegener

发明人： Daniel Koch ,  Spotswood Miller ,  Ricardo Serra ,  Dietmar Wastian ,  Jurgen Kirsch ,  Gerhard Wegener

IPC分类号： C08G18/00

CPC分类号： C07C263/10 ,  C07C265/14

摘要： A two-stage process for the preparation of organic isocyanates by reacting primary amines with phosgene in which a) in a first stage, amine and phosgene are reacted in an adiabatically managed reaction, in which the temperature of reaction is restricted to values between 100 and 220° C. by actively adjusting the absolute pressure in the reactor to values between 8 and 50 bar by decompression, and the temperature is held at values between 100 and 220° C. until the stoichiometric conversion of phosgene has reached at least 80%, and then b) in a second stage, the reaction mixture from a) is decompressed to an absolute pressure of 1 to 15 bar and the reaction mixture is reacted further at temperatures between 90 and 240° C., optionally with the introduction of heat.

摘要翻译： 通过使伯胺与光气反应制备有机异氰酸酯的两阶段方法，其中a）在第一阶段，胺和光气在绝热管理的反应中反应，其中反应温度限于100至 通过减压将反应器中的绝对压力积极地调节到8至50巴之间，并将温度保持在100至220℃之间，直至光气的化学计量转化率达到至少80％为止， 然后b）在第二阶段中，将来自a）的反应混合物减压至1至15巴的绝对压力，并且反应混合物进一步在90-240℃的温度下进行反应，任选地加热。

公开(公告)号：US06528690B2

公开(公告)日：2003-03-04

申请号：US09169087

申请日：1998-10-10

申请人： Uwe Klingler ,  Hans-Georg Pirkl ,  Thomas Schieb ,  Dietmar Wastian

发明人： Uwe Klingler ,  Hans-Georg Pirkl ,  Thomas Schieb ,  Dietmar Wastian

IPC分类号： C07C20500

CPC分类号： C07C201/08 ,  C07C205/06

摘要： Dinitrotoluene (DNT) is produced by the adiabatic nitration of toluene with nitric acid at a temperature of from about 60 to about 200° C. and at a molar ratio of toluene to nitric acid of from about 1:1.5 to about 1:3.0. The reaction mixture thus-obtained is concentrated to a water content of up to 30% by weight. The dinitrotoluene which is present in the reaction mixture is at least partially (if not completely) removed from the reaction mixture either before or after concentration of the reaction mixture. The DNT which is still present in the vapor generated during the concentration of the reaction mixture is kept liquid by the addition of a solvent to the vapors generated during concentration of the reaction mixture. The solvent added to vapor, together with any DNT present in the vapor is recovered. This solvent/DNT mixture may be recycled directly to the reaction vessel. The solvent/DNT mixture may also be separated. The separated solvent may be recycled to the solvent addition step. The separated DNT may be combined with the recovered DNT product or it may be recycled to the nitration reaction mixture.

摘要翻译： 二硝基甲苯（DNT）通过甲苯与硝酸在约60至约200℃的温度和甲苯与硝酸的摩尔比为约1:1.5至约1:3.0的绝热硝化来制备。 将由此获得的反应混合物浓缩至至多30重量％的含水量。 存在于反应混合物中的二硝基甲苯在反应混合物浓缩之前或之后至少部分（如果不是完全）从反应混合物中除去。 仍然存在于反应混合物浓缩期间产生的蒸汽中的DNT通过向反应混合物浓缩期间产生的蒸气中加入溶剂而保持液体。 加入到蒸气中的溶剂与蒸气中存在的任何DNT一起被回收。 该溶剂/ DNT混合物可以直接再循环到反应容器中。 溶剂/ DNT混合物也可以分离。 分离的溶剂可以再循环到溶剂添加步骤中。 分离的DNT可以与回收的DNT产物组合，或者可以将其再循环到硝化反应混合物中。

公开(公告)号：US06258986B1

公开(公告)日：2001-07-10

申请号：US08511028

申请日：1995-08-03

申请人： Uwe Klingler ,  Thomas Schieb ,  Dietmar Wastian ,  Gerhard Wiechers ,  Jürgen Zimmerman

发明人： Uwe Klingler ,  Thomas Schieb ,  Dietmar Wastian ,  Gerhard Wiechers ,  Jürgen Zimmerman

IPC分类号： C07C20500

CPC分类号： C07C201/08 ,  C07C205/06

摘要： Dinitrotoluene is produced by nitrating toluene with nitrating acid under adiabatic conditions in a manner such that some mononitrotoluene is present in reaction mixture. The nitration reaction mixture is then treated to remove at least 5% by weight of water before the reaction mixture is separated into an acid phase and an organic phase. The product dinitrotoluene is recovered from the organic phase. The acid phase may be recycled after nitric acid has been added to replace that which was used in the nitration reaction.

摘要翻译： 二硝基甲苯通过在绝热条件下以硝酸将硝酸甲苯以使得一些单硝基甲苯存在于反应混合物中的方式制备。 然后处理硝化反应混合物以除去至少5重量％的水，然后将反应混合物分离成酸相和有机相。 从有机相中回收产物二硝基甲苯。 在添加硝酸后，酸相可以循环使用，以代替硝化反应中所用的酸相。