Michael L Durham

US Patent:

6797035, Sep 28, 2004

Filed:

Sep 16, 2002

Appl. No.:

10/245608

Inventors:

Kenneth E. Baldrey - Denver CO
Michael D. Durham - Castle Rock CO

Assignee:

ADA Environmental Solutions, LLC - Littleton CO

International Classification:

B03C 3013

US Classification:

95 58, 95 65, 95 71, 95216, 95230, 96 52, 96 74, 96356, 96360, 423395, 423397

Abstract:

The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting an additive containing nitrate and/or nitrite anions with the gas stream; collecting the undesired particles and additive on a collection surface to form an aggregate on the collection surface comprising the additive and undesired particles; and removing the agglomerate from the collection zone. The anions can be compounded with one or more of potassium, sodium, calcium, and aluminum. In a preferred composition, the anion(s) is/are compounded with potassium. The process may be applied to electrostatic precipitators to improve undesired particle collection efficiency.

US Patent:

8124036, Feb 28, 2012

Filed:

Oct 27, 2006

Appl. No.:

11/553849

Inventors:

Kenneth E. Baldrey - Denver CO, US
Sharon Sjostrom - Denver CO, US
Nina Bergan French - Napa CA, US
Michael D. Durham - Castle Rock CO, US

Assignee:

ADA-ES, Inc. - Littleton CO

International Classification:

C01G 9/00
C01G 11/00
C01G 13/00
C22B 17/00
C22B 19/00
C22B 43/00

US Classification:

423 99, 423210, 4232132, 423107, 423462, 95133, 95134

Abstract:

The present invention is directed to an additive, primarily for combustion of low sulfur and high alkali coals, that includes a transition metal to impact positively bottom ash slag and optionally a halogen to effect mercury oxidation and collection in the flue gas.

US Patent:

8293196, Oct 23, 2012

Filed:

Aug 4, 2011

Appl. No.:

13/198381

Inventors:

Kenneth E. Baldrey - Denver CO, US
Sharon Sjostrom - Denver CO, US
Nina Bergan French - Napa CA, US
Michael D. Durham - Castle Rock CO, US

Assignee:

ADA-ES, Inc. - Littleton CO

International Classification:

C01G 9/00
C01G 11/00
C01G 13/00
C22B 17/00
C22B 19/00
C22B 43/00

US Classification:

423 99, 423210, 4232132, 423107, 423462, 95133, 95134

Abstract:

The present invention is directed to an additive, primarily for combustion of low sulfur and high alkali coals, that includes a transition metal to impact positively bottom ash slag and optionally a halogen to effect mercury oxidation and collection in the flue gas.

US Patent:

8439989, May 14, 2013

Filed:

May 21, 2010

Appl. No.:

12/785184

Inventors:

Kenneth E. Baldrey - Denver CO, US
Sharon Sjostrom - Denver CO, US
Nina Bergan French - Napa CA, US
Michael D. Durham - Castle Rock CO, US
Stephen Allen Johnson - Windham NH, US
John Wurster - Evergreen CO, US
John Philip Comer - Manchester NH, US

Assignee:

ADA-ES, Inc. - Littleton CO

International Classification:

C10L 5/00

US Classification:

44620, 44621

Abstract:

The present invention is directed to an additive, primarily for low sulfur and high alkali coals, that includes a transition metal and optionally a halogen to effect mercury oxidation.

US Patent:

20120216729, Aug 30, 2012

Filed:

Feb 6, 2012

Appl. No.:

13/366985

Inventors:

Kenneth E. Baldrey - Denver CO, US
Ramon E. Bisque - Golden CO, US
Michael D. Durham - Castle Rock CO, US

Assignee:

ADA-ES, INC. - Littleton CO

International Classification:

F23J 7/00

US Classification:

110342

Abstract:

The present disclosure is directed to the application of additives to a feed material at a location remote from an industrial facility using the feed material.

US Patent:

62678027, Jul 31, 2001

Filed:

Jun 17, 1999

Appl. No.:

9/335428

Inventors:

Kenneth Eugene Baldrey - Denver CO
Ramon Edward Bisque - Golden CO
Michael Dean Durham - Castle Rock CO
Douglas W. Jackson - Lakewood CO

Assignee:

ADA Environmental Solutions, LLC - Littleton CO

International Classification:

B03C 3013

US Classification:

95 58

Abstract:

The method and apparatus of the present invention are directed to conditioning particulate-containing gas streams using novel additives. The additive is an organometallic salt, preferably of a carboxylic acid, that decomposes in the gas stream to produce mobile metal compounds that significantly reduce the resistivity of the particles. The additive is particularly effective under hot-side conditions when used to condition particles to be collected by an electrostatic precipitator.

US Patent:

44314345, Feb 14, 1984

Filed:

Mar 6, 1981

Appl. No.:

6/241074

Inventors:

George A. Rinard - Denver CO
Michael D. Durham - Englewood CO

Assignee:

University of Denver, Colorado Seminary - Denver CO

International Classification:

B03C 301

US Classification:

55135

Abstract:

An improved electrostatic precipitator for removing high resistivity particles from a gas stream. The precipitator includes a charger section having a plurality of corona electrodes and hollow tubular collector electrodes. These electrodes are arranged in parallel, alternating arrangement in a single plane which is positioned perpendicular to the gas flow. The electrodes are connected to a high voltage electrical source while produces a thin high current electrical field which electrically charges the particles present. A temperature control fluid is passed through the collector electrodes to control the temperature of the particles collected so as to maintain the resistivity of the particles in a range in which back ionization will not occur. Due to the size and geometry of the charger section and the temperature control of the particle layer, an extremely high voltage, high current electrical field can be maintained. A collector section can be provided spaced downstream from the charging section.

US Patent:

20220331738, Oct 20, 2022

Filed:

Dec 30, 2021

Appl. No.:

17/566084

Inventors:

- Highlands Ranch CO, US
Connie Senior - Littleton CO, US
Jon Lagarenne - Castle Rock CO, US
Kenneth E. Baldrey - Denver CO, US
Ramon Bisque - Golden CO, US
Michael D. Durham - Castle Rock CO, US
Nina Bergan French - Napa CA, US

Assignee:

ADA-ES, INC. - Highlands Ranch CO

International Classification:

B01D 53/64
B01D 46/00
C10L 10/00
F23J 7/00
F23J 15/02

Abstract:

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.