Methods of controlling the quality of return industrial water and the struggle with scale

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Coke Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5208368

Vanyushova, T A

The final result of many industrial processes is determined by the quality of the return water in the by-product coke industry. It is no accident that the regulations concerning the industrial use of coking by-product plants put the upper temporary hardness limit for return water at a level of 5-6 mg-eq/l. However, an experiment on the use of a heat exchange device and boiler units indicates that evaluating return water as a heat carrier only by this index (without taking into account the amount of suspended particles) is not sufficient. Fresh industrial water of the Novolipetsk Metallurgical Complex which, in the summertime, has a temporary hardness of about 3-4 mg eq/l is not fit for use in heat exchange devices without special treatment because of its tendency to scale-formation. An investigation of its composition indicated that all its hardness at a pH of 8.15-8.25 is due to bicarbonates. Methods for controlling the water quality are discussed.

• Research Organization: Novolipetsk Metallurgical Complex, USSR
• OSTI ID: 5208368
• Journal Information: Coke Chem. USSR (Engl. Transl.); (United States), Journal Name: Coke Chem. USSR (Engl. Transl.); (United States) Vol. 9; ISSN COKCA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
& Peat-- Products & By-Products
BOILERS
BY-PRODUCTS
COKE OVENS
COKING PLANTS
CONTROL
HEAT EXCHANGERS
INDUSTRIAL PLANTS
SCALE CONTROL
WATER TREATMENT