Method of abating corrosion in crude oil distillation units
Patent
·
OSTI ID:5393780
This patent describes an improvement in a process for abating corrosion in a crude column overhead transfer line operated at at temperature above the nominal aqueous dew point in contact with a crude oil feed stream containing sulfur oxides, ammonia and a hydrochloric acid neutralizing corrosion inhibitor thus forming ammonium chloride and ammonium bisulfate. The improvement comprises maintaining a chloride level in the crude oil feed stream sufficient to provide a mole ratio of ammonium chloride to ammonium bisulfate of greater than about 20 in the crude column overseas system.
- Assignee:
- Shell Oil Co., Houston, TX
- Patent Number(s):
- US 4855035
- Application Number:
- PPN: US 7244239A
- OSTI ID:
- 5393780
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020400* -- Petroleum-- Processing
AMMONIA
AMMONIUM CHLORIDES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
AMMONIUM SULFATES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
CORROSION INHIBITORS
CORROSION PROTECTION
DISTILLATION
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PIPES
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
SULFUR OXIDES
020400* -- Petroleum-- Processing
AMMONIA
AMMONIUM CHLORIDES
AMMONIUM COMPOUNDS
AMMONIUM HALIDES
AMMONIUM SULFATES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
CORROSION INHIBITORS
CORROSION PROTECTION
DISTILLATION
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PIPES
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
SULFUR OXIDES