US 7,597,742 B2
Process for treating a loaded solvent stream having a time-varying concentration of contaminant
Anders Carlsson, Amsterdam (Netherlands); Gijsbert Jan Van Heeringen, Amsterdam (Netherlands); and Thijme Last, Amsterdam (Netherlands)
Assigned to Shell Oil Company, Houston, Tex. (US)
Appl. No. 10/592,851
PCT Filed Mar. 16, 2005, PCT No. PCT/EP2005/051187
§ 371(c)(1), (2), (4) Date Sep. 14, 2006,
PCT Pub. No. WO2005/090269, PCT Pub. Date Sep. 29, 2005.
Claims priority of application No. 04251543 (EP), filed on Mar. 18, 2004.
Prior Publication US 2008/0229924 A1, Sep. 25, 2008
Int. Cl. B01D 47/00 (2006.01)
U.S. Cl. 95—11  [95/8; 95/13; 95/159; 95/169; 95/191; 95/207; 95/235] 12 Claims
OG exemplary drawing
 
1. A process for treating a loaded solvent stream having a time-varying contaminant concentration, the process comprising the steps of: (a) providing a plurality of hold-up tanks; (b) feeding the loaded solvent stream in dependence on its contaminant concentration to one or more of the hold-up tanks and; (c) allowing loaded solvent to flow from the plurality of hold-up tanks to obtain a smoothed loaded solvent stream having a reduced time-varying contaminant concentration.