Process and apparatus for size selective separation of micro- an

Details Process and apparatus for size selective separation of micro- an Process and apparatus for size selective separation of micro- an

1998-11-17

2000-09-05

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210650, 210653, 210805, 23295R, B01D 6100

Patent

active

061137952

ABSTRACT:
Processes and apparatuses are provided for continuously harvesting particles from organic solution-laden near-critical and supercritical fluids. Broadly, the processes and apparatuses utilize a filter or separator comprising a thin membrane supported on a sintered stainless steel tube. A feed stream comprising the desired particles, a supercritical antisolvent for the particles (preferably CO.sub.2), and a solvent for the particles, is contacted with the membrane layer of the filter under supercritical conditions for the mixture of antisolvent and solvent. The preferred antisolvents are substantially miscible with the solvent and have a critical temperature of less than 160.degree. C. The desired particles are retained by the filter while the solvent and most of the antisolvent pass through the filter, resulting in separation of the particles from the solvent.

REFERENCES:
patent: 4958529 (1990-09-01), Vestal
patent: 5160044 (1992-11-01), Tan
patent: 5430224 (1995-07-01), Schucker
patent: 5527466 (1996-06-01), Li et al.
patent: 5639441 (1997-06-01), Sievers et al.
patent: 5864923 (1999-02-01), Rouanet et al.
patent: 5961835 (1999-10-01), Sarrade et al.
patent: 5981474 (1999-09-01), Manning et al.

Affiliated with

Also associated with

Rating

Process and apparatus for size selective separation of micro- an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for size selective separation of micro- an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for size selective separation of micro- an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2208673