Pulsed vapor desorber

Details Pulsed vapor desorber Pulsed vapor desorber

2007-07-17

2007-07-17

Lawrence, Frank M. (Department: 1724)

Gas separation: processes

Solid sorption

C095S148000

Reexamination Certificate

active

10853563

ABSTRACT:
Vapor concentrators are used to provide a higher concentration of trace target vapor than would normally be available in the environment. This is accomplished by allowing the trace target vapor to adsorb onto a concentrating surface and subsequently releasing the trace target vapor by heating the surface. An improved desorbing method is providing by a fast pulse of photons, which only heats the near surface region, rather than the entire mass of the substrate on which the concentrating surface resides. Since all of the trace target vapor is released in a short time interval, the vapor is less diluted by carrier gas than would occur during the slower temperature ramp that results when the entire substrate mass is heated. A more highly concentrated target vapor is produced with less input of energy.

REFERENCES:
patent: 4910965 (1990-03-01), Lepofsky et al.
patent: 5482524 (1996-01-01), Nakano et al.
patent: 5667559 (1997-09-01), Vickery
patent: 6149717 (2000-11-01), Satyapal et al.
patent: 6517610 (2003-02-01), de la Houssaye
patent: 6605814 (2003-08-01), Tadika et al.
U.S. Appl. No. 10/295,010 filed Nov. 14, 2002, Cyclone Sampling Nozzle for an Ion Mobility Spectrometer, Motchkine et al.
U.S. Appl. No. 10/295,039 filed Nov. 14, 2002, Radiative Sample Warming for an Ion Mobility Spectrometer, Motchkine et al.
U.S. Appl. No. 10/349,491 filed Jan. 22, 2003, Explosive Detection System, Krasnobaev et al.
U.S. Appl. No. 10/754,088 filed Jan. 7, 2004, Virtual Wall Gas Sampling for an Ion Mobility Spectrometer, Krasnobaev et al.
U.S. Appl. No. 10/818,434 filed Apr. 5, 2004, Modified Vortex for an Ion Mobility Spectrometer, Krasnobaev et al.
U.S. Appl. No. 10/890,820 filed Jul. 14, 2004, Flash Vapor Sampling for a Trace Chemical Detector, Belyakov et al.

Affiliated with

Also associated with

Rating

Pulsed vapor desorber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pulsed vapor desorber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsed vapor desorber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3751804