Method of desulfurizing and deodorizing sulfur bearing hydrocarbon feedstocks

Patent · Tue Nov 22 00:00:00 EST 1988

OSTI ID:6480771

Kutty, K K; James, V A

This patent describes a process for producing a substantially sulfur-free liquid hydrocarbon having a boiling range of about 150/sup 0/-200/sup 0/C, an aromatic content between about 15-18 percent by weight, and a flash point of 38/sup 0/-43/sup 0/C, from sulfur-bearing hydrocarbon liquid boiling in the kerosene range, which comprises the steps of: (a) contacting the sulfur-bearing liquid hydrocarbon with sodium hydride in an amount ranging from about 0.01 to about 5 percent by weight based on the weight of the sulfur-bearing liquid hydrocarbon, in the liquid phase and in a hydrogen free environment at normal atmospheric pressure, and heating the mixture to boiling to form an insoluble sulfide sludge and a hydrocarbon liquid having a reduced sulfur content; (b) distilling the hydrocarbon liquid formed in step (a) and collecting a fraction boiling in the range of about 150/sup 0/-200/sup 0/C; (c) contacting the hydrocarbon fraction from step (b) with sulfuric acid and permitting the mixture of the hydrocarbon and the acid to separate into an acid fraction and hydrocarbon fraction, the contacting being conducted at normal atmospheric pressure; (d) contacting the hydrocarbon fraction from step (c) sequentially with an alkaline oxidizing agent, a strong alkaline neutralizing agent, and a hot wash water to form a substantially sulfur-free hydrocarbon fraction and an aqueous fraction; and, (e) recovering the sulfur-free hydrocarbon fraction.

• Assignee: Al Sanea Chemical Products, Safat
• Patent Number(s): US 4786405
• OSTI ID: 6480771
• Resource Relation: Patent File Date: Filed date 4 Mar 1986
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
PETROLEUM FRACTIONS
DESULFURIZATION
ACIDIFICATION
ALKALINE EARTH METAL COMPOUNDS
AQUEOUS SOLUTIONS
AROMATICS
BOILING POINTS
COMBUSTION PROPERTIES
DISTILLATION
HIGH TEMPERATURE
MIXING
ODORANTS
OXIDATION
OXIDIZERS
PH VALUE
REMOVAL
SODIUM HYDRIDES
SULFURIC ACID
ALKALI METAL COMPOUNDS
CHEMICAL REACTIONS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDRIDES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MIXTURES
ORGANIC COMPOUNDS
PETROLEUM
PHYSICAL PROPERTIES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLUTIONS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
020400* - Petroleum- Processing