Victor E Braman

US Patent:

6667021, Dec 23, 2003

Filed:

Sep 12, 2001

Appl. No.:

09/950875

Inventors:

Victor Eugene Braman - Green River WY
Marco Antonio Cortes - Green River WY
Stephen Tremayne Gaddis - Sweetwater WY
Kenneth Douglas Boyle - Sweetwater WY

Assignee:

General Chemical Corporation - Parsippany NJ

International Classification:

C01D 700

US Classification:

423422, 423421, 4232062, 23302 T

Abstract:

n the manufacture of sodium carbonate having increased CO uptakes the carbonation reaction to form sodium bicarbonate is enhanced by the addition of particular amounts of a cationic quaternary amine, selected from the family of dialkylethoxylated quaternary salts, benzylalkyl quaternary salts, or a combination of quaternary salts from these families, to treat the 25-30% by weight sodium carbonate liquor prior to filtration. The manufactured product yields a modified sodium carbonate liquor product that, when crystallized and converted to any anhydrous product, is more readily carbonated with CO in the production of sodium bicarbonate. The cationic additive reacts with organic materials in the sodium carbonate liquor to form solid polymeric by-products. Thus the treatment with a cationic compound is made prior to filtering the liquor. After filtering to remove the polymeric by-products and other solid materials, the liquor is evaporated or crystallized to produce a purified and modified sodium carbonate.

US Patent:

7645435, Jan 12, 2010

Filed:

Apr 26, 2004

Appl. No.:

10/831859

Inventors:

Victor E. Braman - Green River WY, US
Marco A. Cortes - Green River WY, US
Falcon A. Price - Green River WY, US
Stephen T. Gaddis - Green River WY, US
Todd M. Lessard - Green River WY, US
James M. Shepard - Wilmington DE, US
Derral W. Smith - Green River WY, US

Assignee:

General Chemical Industrial Products, Inc. - East Hanover NJ

International Classification:

C01D 7/12

US Classification:

423427, 4232062

Abstract:

A process is described for recovering sodium carbonate or other sodium-based chemicals from sodium-bearing streams, including in particular mine water, evaporative pond water and sodium carbonate decahydrate deposits, recycle and purge streams, and other waste streams. In the process sodium bicarbonate-bearing streams are decarbonized to reduce the sodium bicarbonate concentration in a combination with other sodium-bearing streams, resulting in a liquor suitable as feed to a sodium carbonate decahydrate or sodium carbonate monohydrate process. The sodium bicarbonate stream is combined in a mix tank with other sodium carbonate bearing streams where the concentration is adjusted to form a liquor suitable to feed a sodium decahydrate or sodium carbonate monohydrate evaporation/crystallization step. In the process the combination of the various sodium-bearing streams is decarbonized to below 3. 5% sodium bicarbonate when fed to a sodium decahydrate process and to below 1% sodium bicarbonate when fed to a sodium carbonate monohydrate process.

US Patent:

20030143149, Jul 31, 2003

Filed:

Jan 31, 2002

Appl. No.:

10/061477

Inventors:

Victor Braman - Green River WY, US
Marco Cortes - Green River WY, US
Falcon Price - Green River WY, US
Stephen Gaddis - Green River WY, US
Todd Lessard - Green River WY, US
James Shepard - Wilmington DE, US
Derral Smith - Green River WY, US

International Classification:

C01D007/00

US Classification:

423/426000

Abstract:

A process is described for recovering sodium carbonate or other sodium-based chemicals from sodium-bearing streams, including in particular mine water, evaporative pond water and sodium carbonate decahydrate deposits, recycle and purge streams, and other waste streams. In the process selected sodium bicarbonate-bearing streams are decarbonized to reduce the sodium bicarbonate concentration in a combination with other sodium-bearing streams, resulting in a liquor suitable as feed to a sodium carbonate decahydrate or sodium carbonate monohydrate process. The sodium bicarbonate concentration can be reduced using any number of known processes such as reacting said sodium bicarbonate with a neutralizing agent such as calcium oxide, calcium hydroxide, sodium hydroxide, or other alkali. Sodium bicarbonate can also be stripped using steam or air. The sodium bicarbonate reduced stream is combined with other sodium-bearing streams where the concentration is adjusted to form a liquor suitable to feed a sodium decahydrate or sodium carbonate monohydrate evaporation/crystallization step. Alternatively, the decarbonized stream can be concentrated using sodium carbonate decahydrate crystals formed from said sodium carbonate decahydrate process. Additionally, waste streams dilute in sodium carbonate concentration can be heated, especially with waste process heat, and recycled to existing sodium carbonate decahydrate deposits in evaporation ponds prior to combining said stream with other waste streams, purge streams, recycle streams, or sodium decahydrate crystals with the intention of recovering sodium carbonate from such streams and deposits and further processing the resulting liquor through an evaporation/crystallization step whereby various selected sodium carbonate salts are produced. The combination of the various sodium-bearing streams is decarbonized to below 3.5% sodium bicarbonate when fed to a sodium decahydrate process and to below 1% sodium bicarbonate when fed to a sodium carbonate monhydrate process. The feed streams are adjusted in sodium carbonate concentration by higher concentrated sodium carbonate-bearing streams or by addition of sodium carbonate decahydrate produced from said streams or recovered form evaporation pond deposits, are then processed to produce sodium carbonate decahydrate or sodium carbonate monohydrate or further processed to form other sodium carbonate salts.

US Patent:

6270740, Aug 7, 2001

Filed:

Sep 9, 1999

Appl. No.:

9/392443

Inventors:

James Milo Shepard - Hockessin DE
Victor Eugene Braman - Green River WY
Kenneth Douglas Boyle - Green River WY
Carter Jay Moore - Green River WY

Assignee:

General Chemical Corporation - Parsippany NJ

International Classification:

C01D 700
C01D 710

US Classification:

423422

Abstract:

An improved method of purifying sodium carbonate from a natural source whereby a dissolved sodium carbonate product is treated with a cationic compound, such as a quaternary amine, to react with carbon-containing contaminants and filtering the product. The filtered modified sodium carbonate solution is then crystallized and dried. The modified sodium carbonate has a greater reactivity or uptake of carbon dioxide for the manufacture of sodium bicarbonate than conventional sodium carbonates.