Apparatus and method for supercritical fluid extraction

Details Apparatus and method for supercritical fluid extraction Apparatus and method for supercritical fluid extraction

1994-03-08

1997-06-03

Spear, Frank

Liquid purification or separation

Processes

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

2104161, B01D 1100

Patent

active

056350708

ABSTRACT:
To pump supercritical carbon dioxide into a supercritical extractor without overpressure in the reservoir and to record the volume being delivered, the pumping speed is controlled and the volume pumped is determined from a pressure-related signal used in a feedback circuit. The feedback controls the velocity of pumping in conjunction with programmed values to avoid destructive reverse torque. A cam in the pump controls piston stroke, has a depressurization portion with an initial slope equal to but in the opposite direction of the final slope, rounded transition slopes, increasing linear velocity to the refill portion and constant velocity in the refill portion.

REFERENCES:
patent: 5180293 (1993-01-01), Hartl

Affiliated with

Also associated with

Rating

Apparatus and method for supercritical fluid extraction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for supercritical fluid extraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for supercritical fluid extraction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-388688