Refrigeration – Storage of solidified or liquified gas – Spraying of cryogen
Patent
1995-06-07
1997-05-27
Eley, Timothy V.
Refrigeration
Storage of solidified or liquified gas
Spraying of cryogen
62 60, 451 39, 451 53, 451 75, 451446, 451 7, B24B 4914, B24C 312, F17C 702, B65B 6308
Patent
active
056321503
ABSTRACT:
An improved blast cleaning system and an improved method of blast cleaning using solid carbon dioxide pellets is provided. A compressed air source--preferably an air compressor--is used to produce a compressed air or carrier gas stream which is cooled to the desired temperature by injection of a cryogen--preferably liquid nitrogen--before the solid carbon dioxide pellets are introduced into the carrier gas stream. Solid carbon dioxide pellets are then added to the cooled compressed air stream and then propelled towards the surface to be cleaned. Using a compressed air stream which is precooled to the desired operating temperature helps to minimize the sublimation of the carbon dioxide pellets. The use of the precooled compressed air stream also allows greater control of the hardness, size, density, impact forces, stripping rates, and stripping efficiencies of the carbon dioxide pellets. An improved method of transporting solid carbon dioxide pellets which can be used for nonblasting applications (e.g., charging shipping containers for frozen or chilled foods) is also provided.
REFERENCES:
patent: 4038786 (1977-08-01), Fong
patent: 4389820 (1983-06-01), Fong et al.
patent: 4481779 (1984-11-01), Barthel
patent: 4495775 (1985-01-01), Young et al.
patent: 4617064 (1986-10-01), Moore
patent: 5184427 (1993-02-01), Armstrong
patent: 5319946 (1994-06-01), Manificat
patent: 5321955 (1994-06-01), Leonard
patent: 5365699 (1994-11-01), Armstrong et al.
patent: 5445553 (1995-08-01), Cryer et al.
Eley Timothy V.
Liquid Carbonic Corporation
LandOfFree
Carbon dioxide pellet blast and carrier gas system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Carbon dioxide pellet blast and carrier gas system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon dioxide pellet blast and carrier gas system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2321515