Kurt W Johnson

US Patent:

6594553, Jul 15, 2003

Filed:

Apr 18, 2000

Appl. No.:

09/552183

Inventors:

Kurt W. Johnson - Stafford Springs CT
Ferdinand A. Ruszala - Colchester CT
Peter T. Stromberg - Simsbury CT
James F. Durant - Bloomfield CT

Assignee:

Alstom (Switzerland) Ltd - Baden

International Classification:

G05B 2100

US Classification:

700273, 700266, 423539

Abstract:

The present invention provides, according to one aspect thereof, a computer controlled process for reducing SO from a flue gas. The process includes the basic steps of providing an aqueous treatment solution containing an inorganic salt and a control unit for controlling the introduction of the aqueous treatment solution containing an inorganic salt and controlling the control unit in response to a computer program to effect introduction of the aqueous treatment solution into contact with alkaline earth material. Thereafter, the process includes heating the alkaline earth material in the presence of the flue gas containing SO to remove the SO. The alkaline earth material may be limestone or dolomite. The inorganic salt is selected from the group consisting of thermally decomposable sodium compounds including sodium carbonate, sodium bicarbonate, sodium hydroxide, sodium nitrate, and sodium acetate. In selected applications of the process of the present invention, the inorganic sodium compound has a concentration of between 0.

US Patent:

7780765, Aug 24, 2010

Filed:

Jun 30, 2008

Appl. No.:

12/164400

Inventors:

Srivats Srinivasachar - Sturbridge MA, US
Shin G. Kang - Simsbury CT, US
Kurt W. Johnson - East Windsor CT, US

Assignee:

ALSTOM Technologies Ltd

International Classification:

B01D 53/02

US Classification:

95134, 95 58, 110203, 110345, 423210

Abstract:

A method for removing mercury from flue gases generated by the combustion of coal comprises: storing a starter batch of activated carbon in an agglomerated state; de-agglomerating the starter batch in a separation device to create a contact batch of activated carbon; transporting the contact batch to a contact location; injecting the contact batch into contact with the flue gas at a contact location having a temperature between 400 F. and 1100 F. , whereupon the activated carbon of the contact batch adsorbs mercury from the flue gas; and removing the activated carbon having mercury adsorbed thereon from the flue gas. The transporting step is conducted with substantially no intermediate storage of the contact batch following the de-agglomeration of the starter batch to prevent re-agglomeration of the activated carbon prior to injection.

US Patent:

8069797, Dec 6, 2011

Filed:

Oct 8, 2004

Appl. No.:

10/961697

Inventors:

Srivats Srinivasachar - Sturbridge MA, US
Shin G. Kang - Simsbury CT, US
Kurt W. Johnson - East Windsor CT, US

Assignee:

ALSTOM Technology Ltd.

International Classification:

F23J 11/00

US Classification:

110345, 110342

Abstract:

A system for removing elemental mercury or mercury compounds handles carbonaceous sorbent of a starter batch stored in a silo in an agglomerated state. The sorbent is fed by a feeder to a separation device , which comminutes (if necessary) and de-agglomerates the sorbent particles to their primary size distribution. This device may be a particle-particle separator or a jet mill, where compressed air or high-pressure steam is the energy source. The de-agglomerated sorbent of a contact batch created from the starter batch is conveyed by an airsteam for injection at a contact location in a flue gas duct whereat carbonaceous sorbent of the contact batch adsorbs mercury from the flue gas.

US Patent:

8148284, Apr 3, 2012

Filed:

Feb 11, 2008

Appl. No.:

12/028991

Inventors:

James F. Durant - Windsor CT, US
David J. Matteson - Avon CT, US
Kurt W. Johnson - Canton CT, US

Assignee:

ALSTOM Technology Ltd - Baden

International Classification:

B01D 15/00

US Classification:

502 22, 502 25, 502 29, 502 30, 502 31

Abstract:

A system for effecting the pretreatment therewith of a sorbent comprising a conveying line (), such as a pipe, and a plurality of solution nozzles operative for purposes of introducing a solution to treat the sorbent. More particularly, the conveying line () includes an inlet (), an outlet (), and an inner surface () that is operative to define a passageway () through which sorbent particles are capable of being transported between the inlet () of the conveying line () and the outlet () of the conveying line (). Each of the plurality of solution nozzles includes a respective one of a plurality of orifices () that are designed to be disposed circumferentially about the inner surface () of the conveying line () and that are designed to be operative to effect therewith the injection of an aqueous solution of a liquid sorbent conditioner into the passageway () in order to thereby effect therewith the pretreatment of sorbent particles that are being transported through the passageway () in the conveying line ().

US Patent:

8387252, Mar 5, 2013

Filed:

Oct 7, 2009

Appl. No.:

12/575227

Inventors:

Kurt Johnson - Ringgold GA, US
Robert Hunter - Ringgold GA, US
David Duplissey - Chattanooga TN, US

Assignee:

National Boiler Service, Inc. - Trenton GA

International Classification:

B25D 51/24
B23Q 3/00
B23P 19/04

US Classification:

29890051, 269287, 29256

Abstract:

A boiler tube clamp including a first portion having a first substantially U-shaped midsection with a first inner surface configured for receiving and pressing against one side of a boiler tube, a first hinge member arranged on one end of the first midsection, and a threaded bolt hingedly attached to the other end of the first midsection, and a second portion having a second substantially U-shaped midsection with a second inner surface configured for receiving and pressing against the other side of the boiler tube. The clamp further includes a second hinge member arranged on one end of the second midsection and hingedly connected to the first hinge member so that the first inner surface and the second inner surface close toward one another. An open slot is arranged at the other end of the second midsection configured for detachably receiving the threaded bolt. A lip extends radially out from an outer surface of the second midsection and arranged adjacent to an edge thereof.

US Patent:

20180112303, Apr 26, 2018

Filed:

Oct 21, 2016

Appl. No.:

15/331221

Inventors:

- Baden, CH
Kurt William JOHNSON - Soddy Daisy TN, US
Randall Lee PRICE - Chattanooga TN, US
Matthew Eric JENNINGS - Chattanooga TN, US

International Classification:

C23C 4/11
C23C 4/134
C23C 4/02
C09D 1/00
C09D 7/12
F28F 9/16

Abstract:

A feedstock for a thermal spray process is disclosed. The feedstock includes fly ash derived from coal combustion. A method for coating an article is disclosed. The method includes applying the feedstock as a coating precursor by a thermal spray process. The fly ash preferentially forms a coating disposed on a substrate of the article.