Stripping ammonia from liquid effluent of a hydrodenitrification

Details Stripping ammonia from liquid effluent of a hydrodenitrification Stripping ammonia from liquid effluent of a hydrodenitrification

1976-08-05

1977-11-22

Crasanakis, George

Mineral oils: processes and products

Refining

Nitrogen contaminant removal

C10G 2302

Patent

active

040595030

ABSTRACT:
A nitrogen containing feedstock is hydrodenitrified by passing the feed through at least two hydrodenitrification zones, with ammonia produced in the hydrodenitrification being purged from the system prior to the last hydrodenitrification zone to maintain a low ammonia partial pressure in the last hydrodenitrification zone. The ammonia is preferably purged by stripping ammonia from the liquid portion of the effluent withdrawn from the next to last hydrodenitrification zone. Improved denitrification is obtained by maintaining a low ammonia partial pressure in the last hydrodenitrification zone.

REFERENCES:
patent: 3026260 (1962-03-01), Watkins
patent: 3145160 (1964-08-01), Jacobson
patent: 3215617 (1965-11-01), Burch et al.
patent: 3717571 (1973-02-01), Schulman

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