Joshua J Larson

US Patent:

6974565, Dec 13, 2005

Filed:

Mar 4, 2003

Appl. No.:

10/382348

Inventors:

Kathleen S. Pahlman - Bloomington MN, US
Steve C. Carlton - Emily MN, US
Ray V. Huff - Florence AL, US
Charles F. Hammel - Escondido CA, US
Richard M. Boren - Bakersfield CA, US
Kevin P. Kronbeck - Baxter MN, US
Joshua E. Larson - Burnsville MN, US
Patrick A. Tuzinski - Bloomington MN, US
Steve G. Axen - Golden CO, US

Assignee:

Enviroscrub Technologies Corporation - Bloomington MN

International Classification:

B01D053/46
B01D053/50
B01D053/56

US Classification:

423210, 4232391, 42324401, 4232155, 95 19, 95 21, 96113, 96114, 422170, 422171, 422178

Abstract:

System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. The oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e. g. , bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies.

US Patent:

20020150516, Oct 17, 2002

Filed:

Jan 11, 2002

Appl. No.:

10/044089

Inventors:

John Pahlman - , US
Kathleen Pahlman - Bloomington MN, US
Steve Carlton - Emily MN, US
Ray Huff - Florence AL, US
Charles Hammel - Escondido CA, US
Richard Boren - Bakersfield CA, US
Kevin Kronbeck - Baxter MN, US
Joshua Larson - Burnsville MN, US
Patrick Tuzinski - Bloomington MN, US
Steve Axen - Golden CO, US

Assignee:

EnviroScrub Technologies Corporation

International Classification:

B01D053/50
B01D053/46
B01D053/56
B01D053/60

US Classification:

422/171000, 423/244060, 423/239100, 423/247000, 422/170000, 422/105000, 422/109000, 422/110000, 422/112000

Abstract:

System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. The oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. With respect to pollutant removal, the sorbent may interact with a pollutant as a catalyst, reactant, adsorbent or absorbent. Removal may occur in single-stage, dual-stage, or multi-stage systems with a variety of different configurations and reaction zones, e.g., bag house, cyclones, fluidized beds, and the like. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies. Reacted sorbent may be removed from the reaction action zones for recycling or recycled or regenerated with useful and marketable by-products being recovered during regeneration.

US Patent:

20030113239, Jun 19, 2003

Filed:

Sep 13, 2001

Appl. No.:

09/951697

Inventors:

John Pahlman - Bloomington MN, US
Kathleen Pahlman - Bloomington MN, US
Steven Carlton - Emily MN, US
Ray Huff - Florence AL, US
Charles Hammel - Escondido CA, US
Richard Boren - Bakersfield CA, US
Kevin Kronbeck - Baxter MN, US
Joshua Larson - Burnsville MN, US
Patrick Tuzinski - Bloomington MN, US
Steve Axen - Golden CO, US

International Classification:

B01D053/46
B01D053/50
B01D053/56

US Classification:

422/171000, 422/112000, 422/170000, 422/169000, 422/172000

Abstract:

Systems and process for wet and combinations of wet and dry removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, and oxides of carbon from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the system for removal or capture of pollutants. In wet removal, oxides of manganese are mixed in a slurry which is introduced into reaction zones of the system. In dry removal, the oxides of manganese are introduced from feeders into reaction zones of the system where they are contacted with a gas from which pollutants are to be removed. Removal may occur in single-stage, dual-stage, or multi-stage systems with at least one of the reaction zones being a wet scrubber. A variety dry scrubber may be utilized in combination wet and dry removal systems. Process parameters, particularly system differential pressure, are controlled by electronic controls to maintain minimal system differential pressure, and to monitor and adjust pollutant removal efficiencies. Reacted sorbent may be removed from the reaction action zones for recycling or recycled or regenerated with useful and marketable by-products being recovered during regeneration.