Method of producing petroleum coke calcinate

Details Method of producing petroleum coke calcinate Method of producing petroleum coke calcinate

1977-07-18

1979-11-27

Scovronek, Joseph

Distillation: processes, thermolytic

Including burning of vaporized product

201 14, 201 15, 201 33, 202131, 423461, 432 13, 432106, C10B 4906, C10B 5100

Patent

active

041760107

ABSTRACT:
Green petroleum coke is indirectly dried, then calcined in a cylindric rotary kiln and indirectly cooled utilizing a one-way gas flow in the system. Most of the dust in the vapor from the drying step is directly burned in a steam boiler whose off-gases are used to heat the dryer. Any residual dust in the gas is collected in an electro-filter. This dust together with dust which settles out from the dryer and the kiln is collected and added in controlled amounts to the dried coke before calcining. Hydrocarbons expelled during calcining are partially burned off with a stream of secondary air introduced at the coke exit end of the kiln. Most of the remaining hydrocarbons are burned off before they leave the coke inlet end of the kiln. The calcined coke product contains 0.1% by weight of hydrocarbons. The final off-gas from the process has a residual dust content of less than 100 mg
m.sup.3.

REFERENCES:
patent: 2927062 (1960-03-01), Reintjes
patent: 3173852 (1965-03-01), Smith
patent: 3302937 (1967-02-01), Pixley
patent: 3595542 (1971-07-01), Ashman
patent: 3759795 (1973-09-01), Oliver et al.
patent: 3867261 (1975-02-01), Solano
patent: 3888621 (1975-06-01), Williams
patent: 4012202 (1977-03-01), Byrne et al.
patent: 4077763 (1978-03-01), Jager et al.

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