Pressure gradient passivation of carbonaceous material normally

Details Pressure gradient passivation of carbonaceous material normally Pressure gradient passivation of carbonaceous material normally

1999-07-15

2000-11-14

Howard, Jacqueline V.

Fuel and related compositions

Particulate

Treated to reduce spontaneous ignition

44607, 44608, 44620, 44628, C10L 500

Patent

active

061464325

ABSTRACT:
This invention is a process for the passivation or deactivation with resp to oxygen of a carbonaceous material by the exposure of the carbonaceous material to an oxygenated gas in which the oxygenated gas pressure is increased from a first pressure to a second pressure and then the pressure is changed to a third pressure. Preferably a cyclic process which comprises exposing the carbonaceous material to the gas at low pressure and increasing the pressure to a second higher pressure and then returning the pressure to a lower pressure is used. The cycle is repeated at least twice wherein the higher pressure may be increased after a selected number of cycles.

REFERENCES:
patent: 4249909 (1981-02-01), Comolli
patent: 4328002 (1982-05-01), Bender
patent: 4778482 (1988-10-01), Bixel et al.
patent: 4783199 (1988-11-01), Bixel et al.
patent: 4828576 (1989-05-01), Bixel et al.
patent: 5601692 (1997-02-01), Rinker et al.
patent: 5711769 (1998-01-01), Rinker et al.
patent: 5863304 (1999-01-01), Vrall et al.

Affiliated with

Also associated with

Rating

Pressure gradient passivation of carbonaceous material normally does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pressure gradient passivation of carbonaceous material normally , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure gradient passivation of carbonaceous material normally will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2061297