公开(公告)号：US20080227214A1

公开(公告)日：2008-09-18

申请号：US10586473

申请日：2005-01-26

申请人： Tim Jungkamp ,  Robert Baumann ,  Thorsten Schroder ,  Michael Bartsch ,  Gerd Haderlein ,  Hermann Luyken ,  Jens Scheidel

发明人： Tim Jungkamp ,  Robert Baumann ,  Thorsten Schroder ,  Michael Bartsch ,  Gerd Haderlein ,  Hermann Luyken ,  Jens Scheidel

IPC分类号： G01N31/16 ,  C07C253/10 ,  G01J5/02 ,  G01N9/00 ,  G01N30/02 ,  G01N25/18

CPC分类号： C07C253/10 ,  Y10T436/172307 ,  C07C255/07

摘要： A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene in the presence of at least one catalyst, wherein unhydrocyanated 1,3-butadiene is removed from the effluent of the hydrocyanation and recycled into the process, and the recycled 1,3-butadiene is monitored for the content of hydrogen cyanide.

摘要翻译： 描述了一种通过在至少一种催化剂存在下氢化1,3-丁二烯制备3-戊烯腈的方法，其中将未氢化的1,3-丁二烯从氢化氰化物的流出物中除去并再循环至该方法中 ，监测氰化氢含量的3-丁二烯。

公开(公告)号：US20060096390A1

公开(公告)日：2006-05-11

申请号：US11258698

申请日：2005-10-26

申请人： Kourosh Kolahi ,  Thorsten Schroder ,  Ralf Storm

发明人： Kourosh Kolahi ,  Thorsten Schroder ,  Ralf Storm

IPC分类号： G01F1/84

CPC分类号： G01F1/8404 ,  G01F1/8413 ,  G01F1/8431 ,  G01F1/8436 ,  G01F1/849 ,  G01N2009/006

摘要： A method for operating a mass flowmeter that employs the Coriolis principle and through which flows a medium, wherein the mass flowmeter incorporates a measuring tube that can be stimulated to oscillate, the measuring tube is stimulated to oscillate at a minimum of two mutually different frequencies and/or in at least two mutually different natural oscillating modes, and the resulting oscillations of the measuring tube are recorded. The density of the medium flowing through the measuring tube is determined by evaluating the acquired oscillations of the measuring tube on the basis of a physical-mathematical model for the dynamics of the mass flowmeter. In this fashion, highly accurate measurements are obtained for determining the density of the medium flowing through the measuring tube.

摘要翻译： 一种用于操作质量流量计的方法，该质量流量计采用科里奥利原理并通过其流动介质，其中质量流量计包括可被刺激振荡的测量管，测量管被刺激以至少两个相互不同的频率振荡， /或至少两种相互不同的自然振荡模式，并记录测量管的所得振荡。 流经测量管的介质的密度通过基于用于质量流量计的动力学的物理数学模型评估测量管的获取的振荡来确定。 以这种方式，获得用于确定流过测量管的介质的密度的高精度测量。