公开(公告)号：US4954260A

公开(公告)日：1990-09-04

申请号：US363156

申请日：1989-06-08

申请人： Zvi Ludmer ,  Reuel Shinnar ,  Victor Yakhot

发明人： Zvi Ludmer ,  Reuel Shinnar ,  Victor Yakhot

IPC分类号： B01D11/04 ,  C08J9/00

CPC分类号： B01D11/043

摘要： A multistage countercurrent separation apparatus and method is described. Each stage includes a mixer zone and a settler zone, both of which have temperature control means to achieve a first temperature and a second temperature, respectively, in the mixer and settler zones. Solvents used in the process are selected so that they have at least one immiscibility transition temperature such that they form a single homogeneous phase at said first temperature and two heterogeneous phases at said second temperature. By carrying out the process, a solute or solutes introduced into the system may appropriately be efficiently concentrated or separated with minimal agitation. Furthermore, because emulsification by rapid agitation is avoided, the homogeneous phase quickly coalesces upon passing into the heterogeneous phase, thereby increasing the throughput which may be achieved by the extraction process.

公开(公告)号：US5277884A

公开(公告)日：1994-01-11

申请号：US844539

申请日：1992-03-02

申请人： Reuel Shinnar ,  A. Ullmann ,  Zvi Ludmer

发明人： Reuel Shinnar ,  A. Ullmann ,  Zvi Ludmer

IPC分类号： B01D53/14 ,  B01D53/34

CPC分类号： B01D53/1493

摘要： A novel class of solvents is described that have improved selectivity for H.sub.2 S as compared to CO.sub.2. The solvents are based on adding suitable second partially miscible solvent to known solvents. In specific, it is shown that adding 20% of dodecane to NMP (normal methyl pyrolidinone) increases the selectivity of the solvent for H.sub.2 S as compared to CO.sub.2 by 50%. This leads to important process improvements and reduction in the cost of the removal process.

摘要翻译： 描述了与二氧化碳相比，改进了对H2S的选择性的一类新型溶剂。 溶剂基于向已知溶剂中加入合适的第二部分可混溶的溶剂。 具体来说，显示向NMP（正丁基吡咯烷酮）中加入20％的十二烷可以使二氧化硫溶剂对H2S的选择性提高50％。 这导致重要的过程改进和减少拆卸过程的成本。