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US 4,432,865 AGranted
Process for treating used motor oil and synthetic crude oil
OwnerGeorge R. Normaninventor
Life of this patent
Estimating the term…
Abstract
A process for treating used motor oil or synthetic crude oil comprising: (i) contacting said used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compound to react undesired contaminants contained in said used motor oil or synthetic crude oil with components (A) and/or (B) to form one or more reaction products; and (ii) separating said reaction products from said used motor oil or synthetic crude oil. A process for reclaiming used motor oil is also disclosed.
Claims45
A process for treating used motor oil or synthetic crude oil comprising:
- (i) separating substantially all water from said used motor oil or said synthetic crude oil to provide a substantially anhydrous used motor oil or synthetic crude oil;
- (ii) contacting said substantially anhydrous used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compound to react undesired contaminants contained in said used motor oil or synthetic crude oil with components (A) and/or (B) to form one or more reaction products;
- and
- (iii) separating said reaction products from said used motor oil or synthetic crude oil.
1 more element
A process for treating used motor oil or synthetic crude oil containing undesired nitrogen-containing materials and/or metallic contaminants comprising:
- (i) contacting said used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) cellulose fibers to react said nitrogen-containing materials and/or metallic contaminants with components (A) and/or (B) to form one or more reaction products;
- and
- (ii) separating said reaction products from said used motor oil or synthetic crude oil.
A process for reducing the metallic content of used motor oil comprising:
- (i) separating substantially all water from said used motor oil to provide a substantially anhydrous used motor oil;
- (ii) contacting said substantially anhydrous used motor oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compound until substantially all of said metallic contaminants have reacted with component (A) and/or (B) to form one or more reaction products;
- and
- (iii) separating said reaction products from said used motor oil.
1 more element
A process for treating used motor oil or synthetic crude oil comprising:
- (i) contacting said used motor oil with (A) from about 0.1 to about 5% by weight based on the weight of said used motor oil or synthetic crude oil of a polyfunctional mineral acid and/or the anhydride of said acid and (B) from about 0.1 to about 5% by weight based on the weight of said used motor oil or synthetic crude oil of cellulose fibers until substantially all of the metallic contaminants in said used motor oil or synthetic crude oil have reacted with component (A) and/or (B) to form one or more reaction products;
- and
- (ii) separating said reaction products from said used motor oil or synthetic crude oil.
A process for reclaiming used motor oil comprising the steps of:
- (i) separating bulk water and solid contaminants from said oil;
- (ii) separating fine particulates and remaining suspended water from said oil;
- (iii) vacuum drying said oil at a temperature in the range of about 250.degree. F. to about 400.degree. F. and a pressure in the range of about 2 to about 50 torr to remove dissolved water and light hydrocarbons from said oil;
- (iv) vacuum distilling said oil at a temperature in the range of about 40.degree. F. to about 350.degree. F. and a pressure in the range of about 0.001 to about 0.1 torr to separate substantially all remaining non-metallic contaminants from said oil;
- (v) contacting said oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) a polyhydroxy compound until substantially all metallic contaminants in said oil have reacted with component (A) and/or (B) to form one or more reaction products;
- (vi) separating the reaction products formed in step (v) and any unreacted components (A) and/or (B) from said oil;
- (vii) hydrotreating said oil in the presence of hydrogen and a hydrogenation catalyst at a temperature in the range of about 500.degree. F. to about 800.degree. F. to remove residual polar materials and unsaturated compounds;
- and
- (viii) stripping said oil to remove light hydrocarbons with boiling point below about 600.degree. F.
6 more elements
A process for reclaiming used motor oil comprising the steps of:
- (i) separating bulk water and solid contaminants from said oil;
- (ii) separating fine particulates and remaining suspended water from said oil;
- (iii) vacuum drying said oil at a temperature in the range of about 250.degree. F. to about 400.degree. F. and a pressure in the range of about 2 to about 50 torr to remove dissolved water and light hydrocarbons from said oil;
- (iv) vacuum distilling said oil at a temperature in the range of about 40.degree. F. to about 350.degree. F. and a pressure in the range of about 0.001 to about 0.1 torr to separate substantially all remaining non-metallic contaminants from said oil;
- (v) contacting said oil with (A) from about 0.1 to about 5% by weight based on the weight of said oil of a polyfunctional mineral acid and/or the anhydride of said acid and (B) from about 0.1 to about 5% by weight based on the weight of said oil of cellulose fibers until substantially all metallic contaminants in said oil have reacted with component (A) and/or (B) to form one or more reaction products;
- (vi) separating the reaction products formed in step (v) and any unreacted components (A) and/or (B) from said oil;
- (vii) hydrotreating said oil in the presence of hydrogen and a hydrogenation catalyst at a temperature in the range of about 500.degree. F. to about 800.degree. F. to remove residual polar materials and unsaturated compounds;
- and
- (viii) stripping said oil to remove light hydrocarbons with boiling point below about 600.degree. F.
6 more elements
A process for treating used motor oil or synthetic crude oil comprising:
- (i) contacting said used motor oil or synthetic crude oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) cellulose fibers to react undesired contaminants contained in said used motor oil or synthetic crude oil with components (A) and/or (B) to form one or more reaction products;
- and
- (ii) separating said reaction products from said used motor oil or synthetic crude oil.
A process for reducing the metallic content of used motor oil comprising:
- (i) contacting said used motor oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) cellulose fibers until substantially all of said metallic contaminants have reacted with component (A) and/or (B) to form one or more reaction products;
- and
- (ii) separating said reaction products from said used motor oil.
A process for reclaiming used motor oil comprising the steps of:
- (i) separating bulk water and solid contaminants from said oil;
- (ii) separating fine particulates and remaining suspended water from said oil;
- (iii) vacuum drying said oil at a temperature in the range of about 250.degree. F. to about 400.degree. F. and a pressure in the range of about 2 to about 50 torr to remove dissolved water and light hydrocarbons from said oil;
- (iv) vacuum distilling said oil at a temperature in the range of about 40.degree. F. to about 350.degree. F. and a pressure in the range of about 0.001 to about 0.1 torr to separate substantially all remaining non-metallic contaminants from said oil;
- (v) contacting said oil with an effective amount of (A) a polyfunctional mineral acid and/or the anhydride of said acid and (B) cellulose fibers until substantially all metallic contaminants in said oil have reacted with component (A) and/or (B) to form one or more reaction products;
- (vi) separating the reaction products formed in step (v) and any unreacted components (A) and/or (B) from said oil;
- (vii) hydrotreating said oil in the presence of hydrogen and a hydrogenation catalyst at a temperature in the range of about 500.degree. F. to about 800.degree. F. to remove residual polar materials and unsaturated compounds;
- and
- (viii) stripping said oil to remove light hydrocarbons with boiling point below about 600.degree. F.
6 more elements
Dependencies are inferred from the claim text.