Intrinsically safe flammable solvent processing method and...

Details Intrinsically safe flammable solvent processing method and... Intrinsically safe flammable solvent processing method and...

2006-03-06

2008-11-04

Lu, Jiping (Department: 3749)

Drying and gas or vapor contact with solids

Process

With contacting of material treated with solid or liquid agent

C034S348000, C034S404000, C034S410000, C034S417000, C034S423000

Reexamination Certificate

active

07444761

ABSTRACT:
Parts to be chemically treated are processed in a controlled-environment processing chamber. The process includes applying a negative gauge pressure to the chamber to remove air or other non-condensable gases. The process includes introducing an oxygen free solvent or aqueous solution in a vapor or liquid state. A first system removes oxygen and volatile contaminants from the object being processed and chamber, and a second system further recovers residual solvent from the object and chamber. Eliminating oxygen from the process prevents deflagration within the system thus allowing for the use of flammable solvents within the process.

REFERENCES:
patent: 6418942 (2002-07-01), Gray et al.
patent: 6743300 (2004-06-01), Gray
patent: 6783601 (2004-08-01), Gray et al.
patent: 6783602 (2004-08-01), Gray
patent: 6802137 (2004-10-01), Gray
patent: 6824620 (2004-11-01), Gray et al.

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