PROCESS FOR THE PRODUCTION OF PETROLEUM TAR PITCH FOR USE AS A BINDER IN THE PRODUCTION OF ELECTRODES

摘要

A process for the production of petroleum tar pitch with the using a fresh hydrocarbon feedstock, preheating it, treating the heated feedstock and passing fractionating the treated feedstock into gases, light distillates and a bottom fractionation stream, then dividing the bottom fraction stream into a recycle stream and a cracked fraction stream and using the cracked fraction stream in a reduced pressure distillation tower so that the light cracked fraction is fractionated light vacuum gas oil, heavy vacuum gas oil and a high quality petroleum tar pitch.

主权项

1. A process for the production of petroleum tar pitch comprising:
a. providing a fresh hydrocarbon feedstock; b. pre-heating at least a portion of the feedstock in a furnace to a temperature of about 380° to 480° C.; c. feeding at least a portion of the heated feedstock to a reactor and treating at least a portion of the heated feedstock in the reactor under controlled conditions so as to promote condensation and polymerization reactions; d. passing at least a portion of the treated feedstock to a fractionating tower wherein at least a portion of the treated feedstock is fractionated into (1) gases, (2) light distillates and (3) a bottom fractionation stream; e. dividing the bottom fraction stream into a recycle stream and a cracked fraction stream; f. feeding the cracked fraction stream to a reduced pressure distillation tower wherein the light cracked fraction is further fractionated into (1) light vacuum gas oil, (2) heavy vacuum gas oil and (3) a high quality petroleum tar pitch; g. recycling the recycled stream and admixing the recycle stream with the fresh feedstock; and h. mixing the petroleum tar pitch with a refining element in the form of anode grade coke, to create a petroleum tar pitch product.