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    • 34. 发明申请
    • Method for producing dinitriles
    • US20070155978A1
    • 2007-07-05
    • US10586500
    • 2005-01-27
    • Tim JungkampRobert BaumannMichael BartschGerd HaderleinHermann LuykenJens Scheidel
    • Tim JungkampRobert BaumannMichael BartschGerd HaderleinHermann LuykenJens Scheidel
    • C07C253/10
    • C07C253/10C07C255/04
    • A process is described for preparing adiponitrile and methylglutaronitrile, characterized by the following process steps: (a) reacting a reactant stream comprising pentenenitriles with hydrogen cyanide in the presence of at least one catalyst and of at least one promoter to obtain a reaction stream which comprises pentenenitriles, the at least one catalyst, catalyst degradation products, the at least one promoter, adiponitrile and methylglutaronitrile, (b) distilling the reaction stream to obtain a stream 3 which is depleted in pentenenitriles and comprises the at least one catalyst, catalyst degradation products, the at least one promoter, adiponitrile and methylglutaronitrile as the bottom product and a stream 4 enriched in pentenenitriles as the top product, (c) extracting the stream 3 using an extractant present in stream 5 to obtain a stream 6 enriched with extractant as the top product which comprises the catalyst, and a stream 7 depleted in extractant as the bottom product which comprises catalyst degradation products, the at least one promoter, pentenenitriles, adiponitrile and methylglutaronitrile, (d) distilling the stream 6 to obtain a stream 8 comprising the catalyst as the bottom product and a stream 9 comprising the extractant as the top product, (e) distilling the stream 7 to obtain a stream 10 as the bottom product which comprises catalyst degradation products, the at least one promoter, pentenenitriles, adiponitrile and methylglutaronitrile, and a stream 11 comprising the extractant as the top product, (f) distilling the stream 10 to obtain a stream 12 as the bottom product which comprises catalyst degradation products, the at least one promoter, adiponitrile and methylglutaronitrile, and a stream 13 comprising pentenenitriles as the top product, (g) distilling the stream 12 to obtain a stream 14 as the bottom product which comprises catalyst degradation products and the at least one promoter, and a stream 15 as the top product which comprises adiponitrile and methylglutaronitrile, (h) distilling the stream 15 to obtain a stream 16 comprising adiponitrile as the bottoms and a stream 17 comprising methylglutaronitrile as the top product.
    • 35. 发明授权
    • Method for the recycling of a Lewis acid
    • 路易斯酸回收方法
    • US07084294B2
    • 2006-08-01
    • US10520007
    • 2003-07-04
    • Tim JungkampJens ScheidelHermann LuykenMichael BartschRobert BaumannGerd Haderlein
    • Tim JungkampJens ScheidelHermann LuykenMichael BartschRobert BaumannGerd Haderlein
    • C07C253/10
    • B01J31/24B01J27/32B01J31/1845B01J31/4015B01J31/403B01J2231/343C07C253/10Y02P20/584C07C255/07
    • A process for the recovery of a Lewis acid from a reaction mixture (I) which has been obtained in the hydrocyanation of an olefinically unsaturated compound to a nitrile which has a miscibility gap with water under certain pressure and temperature conditions, in the presence of a catalyst system comprising a Lewis acid and a complex compound. The method comprises a) removing the complex compound from mixture (I) to give a mixture (II), b) adding water to mixture (II) and placing mixture (II) under pressure and temperature conditions to provide a phase (III) and a phase (IV), c) adding a liquid diluent (V) which c1) does not form an azeotrope with water and whose boiling point under certain pressure conditions is higher than that of water, or c2) forms an azeotrope or heteroazeotrope with water under certain pressure conditions,  to phase (III), d) subjecting the mixture of phase (III) and liquid diluent (V) to distillation under the pressure conditions mentioned in step c1) or c2), and e) subjecting mixture (VII) to hydrocyanation of an olefinically unsaturated compound to give the nitrile.
    • 从在不饱和化合物的氢氰化中获得的反应混合物(I)中回收路易斯酸的方法,该反应混合物在一定压力和温度条件下,在与 催化剂体系包含路易斯酸和络合物。 该方法包括:a)从混合物(I)中除去配合物,得到混合物(II),b)在混合物(II)中加入水并将混合物(II)置于压力和温度条件下以提供相(III)和 相(Ⅳ),c)加入一种不与水形成共沸物的液体稀释剂(Ⅴ),其某些压力条件下的沸点高于水,或c2)与水形成共沸混合物 (III),d)在步骤c1)或c2)所述的压力条件下使相(III)和液体稀释剂(V)的混合物进行蒸馏,和e)使混合物(VII) 对烯属不饱和化合物进行氢化,得到腈。