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:
Jan. 10, 1995
Filed:
Oct. 13, 1992
Rolf Ryham, Roswell, GA (US);
Tuomo S Nykanen, Glens Falls, NY (US);
Brian F Greenwood, Glens Falls, NY (US);
Johan Gullichsen, Helsinki, FI;
Erkki Kiiskila, Karhula, FI;
Esko Mattelmaki, Varkaus, FI;
Joseph R Phillips, Glens Falls, NY (US);
Jan Richardsen, Roswell, GA (US);
Jarmo Soderman, Helsinki, FI;
Karl G Wiklund, Karhula, FI;
Kamyr, Inc., Glens Falls, NY (US);
Abstract
A pulp mill has zero or minimum liquid discharges. The large amounts of liquid that must be processed to achieve this result are handled utilizing a multiple effect evaporator provided with heat from a steam exhaust of a condensing type steam turbine. Super heated steam from the recovery and bark boilers is fed to the turbine to generate electricity for the production of bleaching chemical and other uses in the mill. Three or four steam exhausts having different composite temperature and pressure values are taken from the turbine and used where most suitable in the pulp mill. For evaporation of bleach plant effluent the steam taken from the turbine preferably has a pressure of about 1-3 psia and a temperature of about 120.degree.-140 .degree. F, and has no significant adverse affect on power generation.