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.
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.