Process for the production of hydrogenated tar and distillates a

Details Process for the production of hydrogenated tar and distillates a Process for the production of hydrogenated tar and distillates a

1981-11-16

1983-09-27

Garris, Bradley

Distillation: processes, thermolytic

And refining char, e.g., desulfurizing coke

201 29, 201 33, 201 34, 201 38, 201 44, C10B 4906, C10B 5702, C10B 5712

Patent

active

044067445

ABSTRACT:
The production of hydrogenated tar and distillates from coal which is passed through successive condensing, hydrogenation, desulfurization and cooling zones of a dense bed while a flue gas is discharged into the lower portion of the desulfurization zone in admixture with steam and hydrogen for countercurrent flow contact with the coal and coke solids. The gases evolved from the desulfurization zone are passed into countercurrent contact with the coal in the preceding hydrogenation zone where the high boiling coal tar fractions evolved from the coal are hydrogenated and pyrolyzed. The total effluent from the hydrogenation zone is then passed into countercurrent contact with the coal in the condensing zone, preheating the coal by direct contact and initiating the pyrolysis of the coal. The preferred method is practiced in a vertical kiln through which the coal is passed as a dense, compact gravitating bed of solids. The kiln preferably has a centrally disposed gas burner with an oscillating internal baffle which prevents agglomeration of the coal solids.

REFERENCES:
patent: 1690935 (1928-11-01), Hubmann
patent: 3284915 (1966-11-01), Berg
patent: 3316155 (1967-04-01), Holowaty et al.
patent: 3349022 (1967-10-01), Mitchell et al.
patent: 3705086 (1972-12-01), Schmalfeld et al.
patent: 3841992 (1974-10-01), Jones et al.
patent: 4002534 (1977-01-01), Rammler et al.
patent: 4203960 (1980-05-01), Bauer et al.

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