Process for producing pitch

Details Process for producing pitch Process for producing pitch

C - Chemistry, Metallurgy

10

C

196/36

C10C 3/00 (2006.01) C10G 9/00 (2006.01)

Patent

CA 1132072

PROCESS FOR PRODUCING PITCH ABSTRACT OF THE DISCLOSURE A process is disclosed for producing pitches of high quality in a high yield by subjecting selected crude oil to adiabatic thermal and steam cracking process at a temperature between 700°C. and 1000°C. to produce gases containing ethylene, propylene and the like and a tar pitch having an ethylene-to-acetylene ratio above 5; adjusting the pitch content of the tar pitch in the range between 20 and 80 wt% (if this content is outside this specified range); heat-treating at a temperature between about 450°C. and about 550°C. under a pressure between about 50 and about 150 kg/cm2 (G) for abut 1 to 15 minutes, and subsequently heat-soaking at a temperature between about 350 and about 450°C. under a pressure between about 0.5 and about 10 kg/cm2 (G) for about 15 minutes to 10 hours.

321671

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