Processes for the manufacture of enriched pitches and carbon fib

Details Processes for the manufacture of enriched pitches and carbon fib Processes for the manufacture of enriched pitches and carbon fib

1986-03-12

1991-02-26

Doll, John

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

4234471, 4234472, 4234476, 423448, 208 39, 208 44, 264 292, D01F 9145

Patent

active

049960377

ABSTRACT:
There are provided improved processes for the manufacture of enriched pitches, carbon fiber precursors, carbon fibers, and graphite fibers. The improvement comprises employing an elevated wiped-film evaporator in a wiped-film evaporator system comprising the wiped-film evaporator and a means for recovering enriched pitch, such as a positive displacement pump, to form an enriched pitch from catalytic pitch and regulating the operating conditions of the wiped-film evaporator system to provide the desired enriched pitch. The wiped-film evaporator is located a specific distance above the means for recovering enriched pitch. The vertical distance between the outlet of the wiped-film evaporator and the inlet of the means for recovering enriched pitch is within the range of about 10 feet to about 40 feet, preferably about 20 feet to about 40 feet.

REFERENCES:
patent: 3348600 (1967-10-01), Monty
patent: 3349828 (1967-10-01), Monty
patent: 3919376 (1975-11-01), Schulz
patent: 4448670 (1984-05-01), Dickakian
patent: 4497789 (1985-02-01), Sawran et al.
patent: 4528087 (1985-07-01), Shibatani et al.
patent: 4597853 (1986-07-01), Moriya et al.
"Case History-Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning, Form #24-152-85 (Waltham, Mass.).
"Information About Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning, 1984 & 1985.
"Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning, Aug. 1983, Chemical Processing.
"A Design Guide for Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning, 1984.
Case History-"Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning, 1985, Form #24-153-85 (Buffalo, N.Y.).
Case History-"Syltherm.RTM. 800 Heat Transfer Liquid" Dow Corining, 1985, Form #24-296-85 (Oildale, CA).
"A Guide to Specifying Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning, Form #24-183-85, 1985.
"A Design Guide for Syltherm.RTM. 800 Heat Transfer Liquid", Dow Corning , 1985.
"Syltherm.RTM. 800 Heat Transfer System Design Checklist", Dow Corning, Version 2.2.

Affiliated with

Also associated with

Rating

Processes for the manufacture of enriched pitches and carbon fib does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Processes for the manufacture of enriched pitches and carbon fib, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processes for the manufacture of enriched pitches and carbon fib will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-293077