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US3755152A Expired / Lapsed US ⏱️ 0.0 years remaining

Removing contaminants from organic materials

Assignee: OUVOE CHEM IND Inc
•
Filing: 1970-09-14
•
Granted: 1973-08-28
•
Expires: 1990-09-14
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Abstract

Abstract A treating method is described wherein oils or other organic liquids having contaminants therein which are difficult to separate from the oils are removed by mixing and finely subdividing granules of two different surface active adsorbents, such as an activated carbon adsorbent and a molecular sieve adsorbent, adding the mixed adsorbents to the contaminated oil or the like, and, preferably with high shear mixing and heating, allowing the mixed adsorbents to remove the contaminants, and separating the colloidal sized solid adsorbents from the treated materials in a suitable manner, such as by filtration, for example. Examples of oils able to be treated include nonhydrocarbon oils such as silicone oils as well as hydrocarbon oils such as mineral oils and the like. With this method, it is possible to in some instances remove contaminants without removing additives, if desired.

Inventors

  • 👤 G Gulick

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 14:49
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C10G25/05; C10G25/06

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 25 words
A method for removing contaminants as defined in claim 1 wherein said organic material is heated to at least about 50* C during treatment thereof.
Claim 2
Dependent Claim 29 words
A method for removing contaminants as defined in claim 1 wherein said contaminated material is simultaneously heated to at least 50*C and subjected to a high shear mixing action.
Claim 3
Dependent Claim 27 words
A method for removing contaminants as defined in claim 1 in which said contaminated material is a silicone oil adapted for use in an oil diffusion pump.
Claim 4
Dependent Claim 31 words
A method for removing contaminants as defined in claim 1 in which said contaminated material is a petroleum base oil having contaminants therein including iron, aluminum, metal soaps, and color-forming bodies.
Claim 5
Dependent Claim 47 words
A method as defined in claim 1 in which said mixed adsorbent material is added to said contaminated material in an amount of from about one part of adsorbent per 200 parts of contaminated material to about one part of adsorbent per 20 parts of contaminated material.
Claim 6
Independent Claim 152 words
A method of treating a body of contaminated organic oil having dispersed therein as contaminants a minor amount of an insoluble material subdivided into particles of such size as to be highly dispersed within said liquid and to resist separation of said contaminants from said organic liquid by gravitational and other physical forces, said method including mixing and subdividing to colloidal size an activated carbon adsorbent material and a molecular sieve adsorbed material to form a mixed adsorbent of colloidal size particles, said mixed adsorbent material having a strongly adsorbed gas phase on the exterior of said adsorbent particles so as to render said mixture highly fluent, intimately mixing said mixed adsorbent and said contaminated organic oil to expose said contaminant particles to the gas phase on said adsorbent particles, and physically removing said mixed adsorbent particles from said oil with said contaminant particles adsorbed on the surface of said adsorbent particles.
Claim 7
Dependent Claim 17 words
A method as defined in claim 7 wherein said contaminated organic oil comprises a contaminated silicone oil.
Claim 8
Dependent Claim 28 words
A method as defined in claim 7 wherein said contaminated oil is a petroleum base oil having contaminants therein which include iron, aluminum, metal soaps, and color-forming bodies.

References Cited (Backward Citations)

US1759343A Cited
GB287141A Cited
US2060091A Cited
US2202806A Cited
US2961396A Cited
US3094569A Cited
US3098814A Cited
US3211644A Cited
US3654144A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-08-27 1977-02-26 1977-08-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-08-27 1981-02-26 1981-08-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-08-27 1985-02-26 1985-08-28 $7700.00 Window Closed / Lapsed

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