Recovery of nickel chloride and sulfur from waste products

Patent · Tue Feb 23 00:00:00 EST 1988

OSTI ID:5213364

Tao, F S; Mitchell, J B

The method of treating a charge composition containing elemental sulfur and an insoluble sulfide of a transition metal to recover therefrom the metal in a soluble form and elemental sulfur is described which comprises: heating the composition under essentially anaerobic conditions, to a temperature above the volatilization point of sulfur thereby volatilizing sulfur and forming a residue which is substantially free of elemental sulfur; separating the volatilized sulfur from the residue; recovering the separated sulfur; acidifying the residue with an acid containing an anion which forms a water-soluble salt of the transition metal thereby forming solubilized metal salt and hydrogen sulfide; withdrawing the hydrogen sulfide; and recovering the solubilized metal salt.

• Assignee: Texaco, Inc., White Plains, NY
• Patent Number(s): US 4726937
• OSTI ID: 5213364
• Resource Relation: Patent File Date: Filed date 23 Jul 1986
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
NICKEL CHLORIDES
RECOVERY
PETROLEUM RESIDUES
SEPARATION PROCESSES
WASTE PROCESSING
SULFUR
ACIDIFICATION
ANAEROBIC CONDITIONS
DESULFURIZATION
HEATING
SULFIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
MANAGEMENT
NICKEL COMPOUNDS
NONMETALS
PETROLEUM
PETROLEUM FRACTIONS
PROCESSING
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
020800* - Petroleum- Waste Management