Kurt O 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:

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 ().