초록 ▼

A process for removing arsenic and/or selenium from carbonaceous materials. The arsenic and/or selenium are separated by reaction with a metal oxide and/or metal sulfide which is itself derived from a metal complex, and organometallic compound and/or a metal salt of an organic acid which is soluble

A process for removing arsenic and/or selenium from carbonaceous materials. The arsenic and/or selenium are separated by reaction with a metal oxide and/or metal sulfide which is itself derived from a metal complex, and organometallic compound and/or a metal salt of an organic acid which is soluble in said carbonaceous fluid and which either decomposes to the corresponding metal oxide and/or metal sulfide or which can be converted to the corresponding metal sulfide or metal oxide. The reaction of the metal oxide and/or metal sulfide with the arsenic and/or selenium is accomplished at a temperature within the range from about 300°F. to about 800°F. preferably from about 500°F. to about 750°F., most preferably from about 680°F. to about 750°F. and in either an inert or reducing atmosphere. Preferably, the conversion is accomplished in a reducing atmosphere and in the presence of molecular hydrogen.

대표청구항 ▼

A method for separating arsenic and/or selenium from a shale oil consisting essentially of the steps of: (a) combining said shale oil with a metal complex, selected from the group consisting of the mono- and dihydrocarbyl-substituted metal complexes of dithiocarbamic acids, dithiophosphoric acids an

A method for separating arsenic and/or selenium from a shale oil consisting essentially of the steps of: (a) combining said shale oil with a metal complex, selected from the group consisting of the mono- and dihydrocarbyl-substituted metal complexes of dithiocarbamic acids, dithiophosphoric acids and xanthic acid, said metal being selected from the metals of Groups VI-A and VIII-A of the Periodic Table of the Elements, and mixtures thereof, which metal complex is soluble in said shale oil and which will decompose to the corresponding metal sulfide; (b) converting said metal complex to the corresponding metal sulfide by heating; (c) contacting said shale oil and said converted metal complex at a temperature within the range from about 300°F. to about 800°F. in an inert or reducing atmosphere for a period of time within the range from about 10 to about 180 minutes, such that said converted metal complex reacts with arsenic and/or selenium in the shale oil; (d) separating the reacted arsenic and/or selenium from said shale oil; and (e) recovering a shale oil having a reduced concentration of arsenic and/or selenium.