Nalco Chemical Company

Nl Industries

Improtec

David G Braithwaite

Ronald J Allain

William P Hettinger, Jr

Joseph P Maniscalco

Ansell L Reid

Donald G Ries

Virgil L Seale

R Keith Darlington

Jason M Voyce

Thomas Cheavens

A novel composition, and extraction process for the dehydration of a hydrated aliphatic, monohydric alcohol to produce a fuel grade alcohol. A select group of alkali-metal and alkaline-earth metal salts are added to and dissolved within a low volatility polyhydric alcohol to form a solution, or solvent extractant, and said solvent extractant contacted and dissolved within said aliphatic, monohydric hydrated alcohol, the solvent extractant distilled, condensed, and a dehydrated fuel grade aliphatic monohydric fuel grade alcohol recovered.

Extractive distillation process for the production of fuel grade alcohols

A method of catalytically converting acrylonitrile and water with a metallic conversion catalyst into pure acrylamide crystals.

Solvents for the catalytic production of acrylamide from acrylonitrile

This invention outlines a process to beneficiate carnallite ores in such a way as to obtain anhydrous MgCl.sub.2 of sufficient purity to be used as feed for an electrolysis cell producing magnesium metal. Commercially acceptable potassium chloride as also recovered. The organic solvents and the anhydrous ammonia used to obtain the beneficiation of these carnallite materials are recovered for recycle in the process.

Preparation of useful MgCl.sub.2. solution with subsequent recovery of

A two-step process for removing boron impurities from aqueous solutions of magnesium chloride which comprises treating these solutions with more than 3 moles of methanol in the presence of an acid catalyst to form trimethyl borate and then removing the trimethyl borate and excess methanol from such solutions by means of distillation and then extracting from the thus-treated solutions any remaining boron compounds by means of a hydrocarbon liquid. The hydrocarbon liquid extraction step may be used prior to the methanol treatment.

Two-step process for removing boron compounds from aqueous solutions of

A method for removing boric acid and salts therefrom from ethylene glycol-magnesium chloride solutions which contain at least 100 ppm of boron which comprises reducing the pH of such solutions below 7 and then adding thereto at least 3 moles of methanol based on the amount of boric acid or salt thereof present in said solution and then subjecting the thus-treated ethylene glycol-magnesium chloride solution to distillation at a temperature sufficient to remove trimethyl borate-methanol therefrom, thereby reducing the level of boron in the starting solution to not more than 35 ppm.

Boron removal from ethylene glycol-magnesium chloride solutions

In a process of producing anhydrous magnesium chloride of the type comprising:

Polyethers to obtain anhydrous magnesium chloride

A method of beneficiating a mixed salt mineral ore containing potassium and magnesium sulfates and/or their hydrates which allows the recovery of anhydrous magnesium chloride and the simultaneous recovery of commercially acceptable potassium sulfate.

Preparation of a MgCl.sub.2 solution for Nalco's MgCl.sub.2 process from

An anti-foaming agent is added to magnesium chloride containing brine prior to spray drying to produce a spray dried product comprising discrete particles of relatively high bulk density.

Method for producing high bulk density magnesium chloride

Anhydrous magnesium chloride may be prepared for magnesium chloride hydrate by the following sequence of process steps:

Anhydrous magnesium chloride process

A process for the liquid/liquid extraction of aromatic hydrocarbons from organic solvent mixtures containing aromatic and aliphatic hydrocarbons by the use of certain ethers and esters as extractants is disclosed.

Liquid/liquid extraction using certain ethers and esters

Pure, high surface area alumina is produced by the reaction of aluminum salts with lower aliphatic epoxides in an aqueous media and is washed with aqueous solutions of ammonia which have a pH of at least 7.

Process for producing a pure high surface area alumina

Magnesium metal is produced by electrolysis of a molten magnesium chloride electrolyte containing fluoride ions, the electrolyte being derived from holding pond brines which are partially deboronated, concentrated, gelled and spray dried in the presence of hydrochloric acid gas to form discrete particles of high density anhydrous magnesium chloride feed material for electrolytic cells.

Process for producing magnesium metal from magnesium chloride brines

A gelling agent is added to a brine containing magnesium chloride to convert the brine into a gel which is spray dried to produce dried magnesium chloride comprising substantially solid discrete particles of magnesium chloride having bulk densities in the range from about 12 to 45 pounds per cubic foot.

High bulk density magnesium chloride and method for making same

Anhydrous magnesium chloride may be prepared from magnesium chloride hydrates by the following sequence of processing steps: 1. Dissolving the magnesium chloride hydrate in ethylene glycol to form a magnesium chloride hydrate solution. 2. Heating the thus-formed solution to remove all the water therefrom thereby forming a ethylene glycol anhydrous magnesium chloride solution. 3. Treating the water-free magnesium chloride-ethylene glycol solution with ammonia to form a magnesium chloride ammonia complex which precipitates from the ethylene glycol. 4. Removing the precipitate from the ethylene glycol and washing it with a low boiling solvent for ethylene glycol to remove any ethylene glycol entrained in the precipitate. 5. Heating the magnesium chloride ammonia complex to drive off the ammonia which leaves as a finished product completely anhydrous magnesium chloride.

Anhydrous magnesium chloride using ethylene glycol and ammonia

Minute amounts of boron present in naturally occurring brines found in oceans, inland seas, salt lakes and the like are removed by treating the brine with an oxide of aluminum.

Growing community of inventors

Brookhaven, MS, United States of America

David G Braithwaite