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LIQUITREAT 25 LTR

_Product Code

Product group:
655
Product number:
571273

NALFLEET™ Liquitreat™ is a liquid blend of alkaline compounds, scale and corrosion inhibitors, oxygen scavenger and sludge conditioner.

Product information

Features

  • Liquid multi-functional treatment for simplified dosing and handling
  • Suitable for use with auxiliary boilers and waste heat units
  • Contains sulphite oxygen scavenger

Benefits

  • Combined with good control of feed water temperature will ensure effective oxygen removal
  • Heating surfaces are maintained at optimum thermal efficiency
  • Smoke and water tube boilers maintained at peak level efficiency; up to 18 bar pressure

Specification

Physical properties

Appearance Colorless
Density [g/ml] 1,1
Form Liquid
pH 13-14

Technical data

Not Compatible Avoid aluminium, zinc and galvanised steel.

SDS

Directions for use

The main attributes of NALFLEET™ Liquitreat fall into the following categories:

  • Control of alkalinity: The correct level of alkalinity ensures that optimum conditions exist for: Precipitation of hardness salts in conjunction with phosphate.
  • Neutralisation of acid conditions. Avoidance of caustic corrosion. Control of magnesium and calcium salts.
  • Control of hardness: NALFLEET™ Liquitreat provides a phosphate reserve to effectively react with and precipitate the hardness salts introduced with the feedwater.
  • Conditioning of sludge: Boiler sludge can only be removed by blowdown if it is free flowing. NALFLEET™ Liquitreat will ensure this by preventing the sludge from adhering to metal surfaces. The resulting sludge is composed of small particles flowing towards the bottom of the boiler for removal by routine blowdown.
  • Control of oxygen: Oxygen scavenging becomes more important with the increase in boiler pressure. The oxygen scavenger will effectively react with dissolved oxygen even at lower temperatures.

Typical control limits are: P-Alkalinity: 150-300 ppm CaCO3, Sulphite: 50-100 ppm Na2SO3, Chlorides: 200 ppm Cl max, Conductivity <2250us, Condensate pH 8.5-9.2

Dosing method

Liquitreat is best continuously fed into the boiler feed line with a WSS boiler water dosing unit. The amount required for initial dosage can be obtained from the dosage chart. Consult your WSS representative for specific dosing instructions.

Dosage and control

Wilhelmsen Ships Service strongly recommends the use of NALFLEET™ Condensate Control in conjunction with NALFLEET™ Liquitreat. NALFLEET™ Condensate Control is a volatile amine that neutralizes carbonic acid in the condensate return. For optimum protection against oxygen corrosion, we recommend to maintain a minimum temperature of 85°C in the hotwell.

Note: Where feed water temeperatures and or steam rates are variable you should dose a seperate oxygen scavenger to acheive the right balance of alkalinity and oxygen scavenger for best corrosion protection. NALFLEET™ Liquitreat is formulated for use in conjunction with good quality feed water.

Litres of Liqutreat per ton boiler volume to achieve 200 ppm P-Alkalinity as ppm CaCO3

P-Alkalinity*

0

50

100

150

200

250

300

350

Dose/ton**

2,4

1,8

1,2

0,6

0

0

0

Blowdown

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 WSS Test Kit instructions and log the results in Waterproof. The results should be sent to WSS as stated in the Waterproof instructions.

It is important that regular testing is carried out to ensure that treatment levels are correct.