Process for purification by cryogenic sublimation

Details Process for purification by cryogenic sublimation Process for purification by cryogenic sublimation

1975-06-23

1976-11-16

Tayman, Jr., James H.

Chemistry: physical processes

Physical processes

Sublimation

23293R, 23293A, 23295R, 23264, 23252A, 217 71, 159DIG5, 260706, 2606065, 34 5, 423584, 423300, 423407, 423491, 423341, 423489, 423492, 2604488A, 260429R, 260541, 260542, B01D 700

Patent

active

039921590

ABSTRACT:
A process is described for purifying liquids by cryogenic sublimation. This process involves solidifying the liquid by reducing the temperature and pressure to below the triple point. Purification is then carried out by direct transformation from the solid to the vapor phase. Because of increased differentials in vapor pressures at the low temperature at which the procedure is carried out, this purification process is highly efficient and is also particularly suitable for liquids that are susceptible to decomposition with ordinary purification procedures requiring elevated temperatures. The procedure is also advantageous in separating azeotropes, structurally similar compounds, as well as treating flammable, hydroscopic, corrosive and fuming compounds.

REFERENCES:
patent: 2064468 (1936-12-01), Foster
patent: 2852517 (1958-09-01), Lynn
patent: 2993764 (1961-07-01), Grulet et al.
patent: 3012860 (1961-12-01), Meeker et al.
patent: 3111461 (1963-11-01), Hickman
patent: 3276848 (1966-10-01), Barr, Sr., et al.
patent: 3422167 (1969-01-01), Bowman et al.
patent: 3516935 (1970-06-01), Monforte et al.
patent: 3551533 (1970-12-01), Monforte et al.
patent: 3755530 (1973-08-01), Avila et al.

Affiliated with

Also associated with

Rating

Process for purification by cryogenic sublimation 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 for purification by cryogenic sublimation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for purification by cryogenic sublimation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-668778