Gas Research Institute

Gavlin Associates, Inc.

Custom Organics, Inc.

Safety Kleen Corporation

Halocarbon Product Corporation

Gilbert Gavlin

Boris Goltsin

Douglas A Larson

William M Langdon, Deceased

Boris Coltsin

Abid Hashim Bengali

Gunther Erlebacher

Romas Cesas

A glycol solvent selected from a glycol and a tetramethylammonium carboxylate having improved dehydrating capacity and a reduced aborbency for aliphatic and aromatic hydrocarbons.

Glycol solvents and process

A solvent composition comprising a glycol, a potassium carboxylate and a neopentyl alcohol having improved dehydrating capacity and reduced absorbency for aliphatic and aromatic hydrocarbons.

Glycol solvents and method thereof

A process for dehydrating gaseous fluids, such as natural gas, in which the gaseous fluid is contacted with a substantially anhydrous composition having a glycol and an aromatics solubility depressant. The glycol is preferably ethylene glycol, diethylene glycol, triethylene glycol, and mixtures thereof.

Gas dehydration process

A process for dehydrating gaseous fluids, such as natural gas, in which the gaseous fluid is contacted with a dehydrating composition having a glycol and a dissolved salt of at least one alkali metal carboxylate. The glycol is preferably ethylene glycol, diethylene glycol, triethylene glycol and mixtures thereof. The dissolved salt preferably constitutes up to about 33% by weight of the dehydrating composition.

A process for dehydrating natural gas involving the use of a water absorbing composition containing a glycol and an aromatic solubility depressant.

Process for dehydrating natural gas

An apparatus for removing non-volatile residues and impurities from a used solvent includes a self-scrubbing heating distillation subassembly for separating purified solvent for reuse and a controlled waste collector subassembly for overflowing concentrated residues and impurities stripped from the used solvent into an easy-to-service container. The apparatus may be disposed in a parallel in-line relationship with a circulating solvent flow circuit, such as in a dry cleaning operation, to continuously withdraw and purify aliquot portions of the circulating solvent stream, returning good solvent back to the flow circuit and concentrating non-volatile residues and impurities to a removable, environmentally sound serviceable container. The new and improved self-scrubbing heater assembly causes a rapid turbulent reboiling flow of solvent within a confined column and substantially avoids build up of residues on heat exchange surfaces for prolonged heater life and longer uninterrupted service life before service is needed.

On-site, controlled waste concentrator and solvent regenerator apparatus

A method for the separation of Isoflurane from its admixture with other compounds produced in the chlorination of 2-difluoromethoxy-1,1,1-trifluoroethane including subjecting the mixture to distillation, distilling off the Isoflurane and effecting said distillation as an extractive distillation employing an extractive solvent which retards the vapor pressure of Isoflurane.

Purification of isoflurane by extractive distillation

The present invention relates to the recovery of three aprotic amide solvents from their water solutions by extraction with a selected class of organic solvents characterized generally by having two electron withdrawing substituents, exemplified by fluorine and chlorine, located on a carbon atom which also contains a hydrogen atom.

Recovery of aprotic amides

The present invention relates to the recovery of N,N-dimethylacetamide from a mixture containing N,N-dimethylacetamide and acetic acid. Potassium hydroxide is added to the mixture to neutralize the acetic acid and form potassium acetate having a low solubility in N,N-dimethylacetamide and a high affinity for water. The water concentration is adjusted to a desired range and a water non-solvent such as benzene is added to effect separation of an aqueous solution of potassium acetate from the dimethylacetamide as two distinct phases. The phases are then separated and the dimethylacetamide removed from the solvent phase by distillation.

Growing community of inventors

Lincolnwood, IL, United States of America

Gilbert Gavlin