摘要:
Oil and water emulsions containing a high molecular weight polymer (e.g. a partially hydrolyzed polyacrylamide) and a surfactant (e.g. monovalent cation-containing petroleum sulfonate) are broken with a de-emulsifying agent made up of a divalent cation-containing salt, e.g. CaCl.sub.2, and a strong oxidizing or reducing agent, e.g. sodium hypochlorite or hydrazine.
摘要:
A process for breaking an oil-in-water or a water-in-oil emulsion comprising treating the emulsion with a demulsifier prepared by; (a) forming a water soluble polyurea by reacting a polyisocyanate and a polyamine in a non-protonic liquid carbonyl solvent; and (b) forming the demulsifier by reacting the water soluble polymer with an alkylating agent.
摘要:
An improved device for soaking up water that is collected in the bottom of an oil tank, and removing the water therefrom; the device comprising a porous envelope lowered by a tethering line to the tank bottom, the envelope containing sinking weights and Sterculia Lychnophora Hance powder which is unaffected by oils but which readily absorbs water in great volume by being expandable to over fifteen times its original size when fully saturated, thus effectively removing the water when the device is lifted from the tank.
摘要:
The present invention provides a procedure for removing mineral matter and water from a primary bitumen froth recovered from tar sands which comprises diluting the raw bitumen froth with a hydrocarbon diluent boiling in the range of 350*-750*F. and thereafter settling the diluted bitumen froth in an autoclave settling zone to provide a froth product and a tailings product. The tailings product is thereafter subject to centrifugal force to provide a centrifugal tailings product and a centrifugal froth product. The centrifugal froth product is recycled to the settler zone.
摘要:
An improved method for processing bitumen froth containing water, mineral matter, and bitumen to provide a froth product substantially reduced in water and mineral matter which comprises diluting the bitumen froth with a liquid hydrocarbon diluent boiling in the range of 350*-750*F., thereafter subjecting said diluted froth to centrifuging and settling steps, said settling conducted at elevated temperature and pressure to provide a bitumen froth product substantially reduced in water and mineral matter.
摘要:
RESIDUAL MOISTURE AND SULFUR AND OTHER RESIDUAL REDUCING AGENT IMPURITIES CONTAINED IN DRYCLEANING SOLVENTS ARE REMOVED BY ADDING TO THE SOLVENTS AN UNSUBSTITUTED AROMATIC HYDROCARBON OR A HALOGEN OR ALKYL SUBSTITUTED AROMATIC HYDROCARBON DRIED CELLULOSIC MATERIAL ON WHICH HAS BEEN PRECIPITATED A FINE DEPOSIT OF LEAD DICHROMATE. THE SAME MATERIALS MAY ALSO BE ADDED TO PETROLEUM PRODUCTS IN ORDER TO REMOVE SULFUR IMPURITIES THEREFROM.
摘要:
Accumulations of tramp oils are removed from oil-in-water emulsions utilized as cleaners, lubricants and coolants by introducing into the emulsion a small but effective amount of a high molecular weight, water-soluble anionic polymer and heating the treated emulsion at an elevated temperature whereby the tramp oils are coalesced and floated to the surface of the emulsion. The essentially continuous but distinct tramp oil and emulsion phases are then readily separated.
摘要:
A WIDE VARIETY OF MINERAL OIL (PETROLEUM) SUSPENSIONS OF THE OIL-IN-WATER, WATER-IN-OIL TYPES, PARTICULARLY THOSE CONTAINING FINELY DIVIDED SOLID SUSPENDED MATTER ARE BROKEN INTO AN ECONIMICALLY VALUABLE MINERAL OIL FRACTION LOW IN SUSPENDED SOLIDS AND WATER AND AN ECOLOGICALLY ACCEPTABLE WASTE WATER BY USING A HIGH MOLECULAR WEIGHT WATER SOLUBLE POLYELECTROLYTE, SUCH AS A POLYACCYLAMIDE, AND AT LEAST ONE SURFACE ACTING AGENT SUCH AS AN ALKYL SULFOSUCCINATE. OTHER POLYELECTROLYTES AND OTHER SURFACTANTS AND MIXTURES THEREOF ARE EFFECTIVE WITH A WIDE VARIETY OF SUCH EMULSION-SUSPENSIONS; AND RESULT IN AN ECOLOGICALLY EFFECTIVE SEPARATING PROCEDURE. THE COMBINATION OF (1) A PREFERENTIALLY WATER SOLUBLE SURFACTANT SUCH AS SODIUM ISOPROPYLNAPHTHALENE SULFONATE WHICH IS PARTICULARLY EFFECTIVE IN COALESCING WATER PARTICLES, (2) A PREFERENTIALLY OIL SOLUBLE SURFACTANT SUCH AS SODIUM DI(2ETHYLHEXYLESULFOSUCCINATE WHICH IS PARTICULARLY EFFECTIVE
IN COALESCING OIL PARTICLES, AND (3) A HIGH MOLECULAR WEIGHT POLYACRYLAMIDE OF UP TO ABOUT 20 MILLION MOLECULAR WEIGHT WHICH IS PARTICULARLY EFFECTIVE IN FLOCCULATING FINELY DIVIDED SOLIDS, POTENTIATE AND SYNERGISTICALLY AID EACH OTHER AND WITH HEAT TO THIN THE OIL LAYER, IF IT IS VISCOUS, GIVES PARTICULARLY ECOLOGICAL ADVANTAGEOUS RESULTS.
摘要:
Disclosed is a process of facilitating the separation of oil from oil-in-water liquid emulsion systems. The system is contacted with a separation aid including either (1) certain polymers, (2) polymers in conjunction with certain salts, or (3) polymers in conjunction with salts and silica sol. The polymers are water soluble cationic vinyl polymers. The salts are water soluble salts of polyvalent metals which salts in water solution give an acid reaction.
摘要:
A PROCESS OF EMPLOYING POLYURETHANES AS DEMULSIFERS IN PREVENTING, BREAKING AND/OR RESOLVING EMULSIONS OF THE WATER-IN-OIL TYPE, AND MORE PARTICULARLY PETROLEUM EMULSIONS.