Chemistry of inorganic compounds – Nitrogen or compound thereof – Oxygen containing
Patent
1988-04-05
1989-09-26
Doll, John
Chemistry of inorganic compounds
Nitrogen or compound thereof
Oxygen containing
C01B 2140
Patent
active
048698903
ABSTRACT:
The present invention is a process for the control of nitric acid plant stack opacity in the range from 0 to 10 percent during plant startup and shutdown. The process is a series of sequential steps which encompass maximizing pressure, water and air flow to the absorber and adding ammonia upstream of the catalytic combustor. The process is typically accomplished through an automatic control system.
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Andersen et al., "Catalytic Treatment of Nitric Acid Plant Tail Gas", Industrial and Engineering Chemistry, vol. 53, No. 3 (Mar. 1961), pp. 199-204.
Adams Joseph B.
Gaspar James A.
Stash Paul J.
Air Products and Chemicals Inc.
Doll John
Jones II Willard
Langel Wayne A.
Marsh William F.
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