Refinery atmospheric pipestill with ammonia stripping

Details Refinery atmospheric pipestill with ammonia stripping Refinery atmospheric pipestill with ammonia stripping

1998-10-06

1999-09-14

Myers, Helane

Mineral oils: processes and products

Fractionation

Distillation

208347, 208348, 208356, B01D 300

Patent

active

059518537

ABSTRACT:
In an atmospheric pipestill stripping process where steam is utilized as the stripping gas to strip bottoms and side stream products, the improvement comprising utilizing ammonia or a ammonia and steam mixture as said stripping gas wherein when an ammonia and steam mixture is utilized the ratio of ammonia to steam is about 0.1:1 to about 100:1. In a refinery atmospheric pipestill stripping process utilizing a stripping gas, said process comprising utilizing a gas selected from the group consisting of ammonia and a mixture of ammonia and steam as said stripping gas wherein when an ammonia and steam mixture is utilized the ratio of ammonia to steam is about 0.1:1 to about 100:1.

REFERENCES:
patent: 4457837 (1984-07-01), Farnham
patent: 4486299 (1984-12-01), Kettinger
patent: 4806229 (1989-02-01), Ferguson et al.
patent: 5326482 (1994-07-01), Leard et al.
patent: 5714664 (1998-02-01), Fearnside et al.

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