Igor Liba Feb 20, 2010:

boil out procedure http://www.banksengineering.com/boilout.htm

Igor Liba Feb 20, 2010:

http://www4.ncsu.edu/~hubbe/EqipUnit/Boilout.htm

The purpose of a boil-out is to remove deposits of pitch, fibers, minerals, and biological slime from the wetted surfaces of a paper machine during a shutdown. The word "boil-out" has very little to do with boiling, except that the temperature within the paper machine usually is raised during a boil-out. The most common additives used during boil-out procedures are sodium hydroxide and detergents. Some mill operators alternate between alkaline boilouts and acidic boilouts. Enzymes also can be used to help release deposits from the surfaces of papermaking equipment. The frequency of boil-outs is widely variable. Some paper machines run for months without a boil-out. Others, due to chronic deposit problems, may require a boil-out within several hours of running. Effective use of retention aids, talc, and biocides has the potential to reduce the need for boiling out the paper machine as frequently.

Ide sice o papierensky stroj, ale princip je ten isty.

Jan Chupac Feb 19, 2010:

http://www.frymaster.com/docs/uploaded/fry/products/Operatio... Pozrel som si túto stránku, zdá sa že je to dokument, ktorý Viola prekladá. Vyplýva to aj z tohot textu: Never leave the fryer unattended during the boil-out process. If the boil-out solution boils over, turn the fryer off immediately and let the solution cool for a few minutes before resuming the process. To lessen the chance of boil over, turn the fryer’s gas valve knob to the PILOT position occasionally.