UNITOR ALKALINITY CONTROL

Unitor Alkalinity Control

浓缩碱性锅炉水处理剂

655 571307

General description

Concentrated liquid alkaline product for corrosion and scale control in boilers.

Features

·                 Convenient liquid treatment which provides the basic alkalinity on which successful water treatment depends

·                 Maintains alkalinity within optimum limits

·                 Provides optimum conditions for hardness control to function

·                 Assists in precipitation and blowdown of magnesium and calcium salts

·                 Neutralises acid conditions

·                 Allows efficiency to be maintained, and reduces maintenance.

·                 Can be used with most treatment chemicals, in conjunction with a coordinated treatment programme

·                 Will assist in keeping silica in suspension

·                 Simple test to determine level of treatment

·                 Can be used in boilers of all pressures

·                 Can be used as a neutraliser after acid cleaning operations in different systems

·                 Approved by the Norwegian National Institute of the Public Health for the use as neutraliser after acid cleaning operations in fresh water generators

Ordering information

 Product Number                                     Product name

 571307                                             ALKALINITY CONTROL 25 LTR

Directions for use

This treatment is part of Wilhelmsen Ships Service Coordinated Treatment Programme. Alkalinity Control provides the alkaline conditions for Hardness Control to function correctly. Without the correct precipitation and subsequent blowdown of hardness salts, scale will form. This will result in restriction in water flow, ineffective heat transfer and local corrosion. The end effect would be an inefficient boiler and ultimately component failure. Alkalinity Control also provides the alkaline conditions required for corrosion control, by neutralisation of acidic gases.

Dosing method

For optimum results dose Alkalinity Control direct to the boiler with a Unitor Boiler Water Treatment Dosing unit, or via the bypass pot-feeder installed in the boiler feed line.

Dosage and control

A proper level of treatment is maintained by testing for p-Alkalinity. The level is determined by the pressure and type of boiler. Refer to the dosage table below for correct dose rates. The normal method of raising the alkalinity level is by adding the required quantity of Alkalinity Control after testing for p-Alkalinity. 225 ml/ton will raise the p-Alkalinity by 100 ppm.

USING THE TABLE: Select the section corresponding to the pressure of the boiler to be treated and read across the table to obtain the level of treatment required.

Dosage of Alkalinity Control in ml/ton boiler volume

Proper treatment should normally give a pH between 9.5 and 11. These are recommended values based on experience and are in no way intended to replace the boiler manufacturer's specifications or company regulations.

Sampling and testing

A representative sample of boiler water should be drawn for analysis daily. The sample should always be taken from the same point after blowdown, cooled and tested immediately. Follow the Spectrapak Test Kit instructions and log the results on the log sheets provided by Wilhelmsen Ships Service. It is important that regular testing is carried out to ensure levels of treatment are correct.

Further Technical Data