The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2000
Filed:
Jul. 30, 1999
Thomas S Czarnecki, Pleasant Valley, CT (US);
Gustave E Friedrichs, Canton, CT (US);
Douglas F Grabowski, Suffield, CT (US);
Michael C Tanca, Tarriffville, CT (US);
ABB Alstom Power Inc., Windsor, CT (US);
Abstract
A method and an assembly for efficiently converting waste water to a gaseous state in a fossil fuel-fired power generation system is provided. The method includes feeding the slurry to the spray dryer reactor, the slurry having a predetermined ratio of liquid to absorbent, and controlling the feed rate of the slurry into the spray dryer reactor as a function of the monitored sulfur oxide level such that the sulfur oxide level is maintained within an acceptable range. The method also includes supplying supplemental liquid in the form of waste water into the spray dryer reactor in a non-proportionate manner relative to the feed of absorbent into the spray dryer reactor such that the ratio of liquid to absorbent in the spray dryer reactor changes. Both the supply rate of supplemental liquid into the spray dryer reactor and the temperature of the flue gas entering the spray dryer reactor are controlled in dependence upon the temperature of the flue gas exiting the spray dryer reactor such that, in the event that the sensed temperature of the flue gas exiting the spray dryer reactor is below a minimum acceptable flue gas exit temperature, the supply rate of supplemental liquid is controlled according to a prescribed manner.