Hardness Phosphate Control
Phosphate Control
Phosphate Boiler Water Treatment Hardness Control is a white dry powder Phosphate Boiler Water Treatment product is used for the reduction of hardness in boilers. Hardness Control is highly soluble in water and It will precipitate calcium hardness
Key details
| Generic name | Phosphate Control |
|---|---|
| IMPA code | 551441 |
| Active matter (%) | 90-95 |
| Standard packing | 25.00 Kg.PWD |
| Available pack sizes | Hardness Phosphate Control protects against Deposition and corrosion of boiler systems reduces efficiency, and increases fuel and water consumption, and usage of RXSOL Hardness Phosphate Control regularly enhances boiler efficiency. This product is available in 25, 50, and 210 kg |
| Supply locations | Hardness Phosphate Control is available in several packaging sizes at several stock points like Fujairah, Dubai, Muscat, Barka, Nairobi Kenya, Uganda, Africa Canada, Bristish Columbia, Mumbai, Thane, Kandla, Gandhidham, Vizag, Vishakhapatnam, Ennore, Chennai, Kolkata. |
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For optimum results dose Hardness Control direct to the boiler via the bypass pot-feeder. The dry powder should be dissolved in hot water (50°C) at a ratio of 1 part powder to twenty parts condensate (e.g. 500 grams/10 litres). Ensure that treatment is fully dissolved before dosing.
This treatment dosed at 1.49 grams per ton of distilled water provides 1.0 ppm phosphate.
Feed Points: Dose with other BOILER CHEMICAL/alkaline liquid by diluting withcondensate and feed directly into the system drum (below the water level) using a bypass pot feeder. For low-pressure boilers, It may be dosed to the hotwell or condensate return tank, although this is not the preferred method.
Dosage and control
|
Phophate test result in pPM PO4 |
|||||||
|
Pressure |
0 - 10 |
10 - 20 |
20 - 30 |
30 - 40 |
40 - 50 |
> 50 |
Control range |
|
0-40 Bar |
23 |
11.5 |
Satisfactory |
Satisfactory |
Blow Down |
20-50 |
|
|
41-60 Bar |
17 |
5.5 |
Satisfactory |
Blow Down |
Blow Down |
15-30 |
|
|
> 60 Bar |
5.5 |
Satisfactory |
Satisfactory |
Blow Down |
Blow Down |
10-25 |
Select row on righthand side for applicable pressure range. Compare test result with comment in table and dose stated amount of product per ton boiler water volume.
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 sample of boiler water should be drawn for analysis daily. The sample should always be taken from the same point after blow down, cooled and tested immediately. Follow the Rxsol Hardness Test Kit instructions and fill the Boiler Water Log Form according to result results. It is important that regular testing is carried out to ensure levels of treatment are correct.
Physical Properties :
Appearance :White powder
Corrosive action :NonE
pH 1% solution :8.8
Flash point :None
<p style="text-align: justify;">
<span style="text-align: justify;">Phosphate/pH relationship recommended to control boiler corrosion. Different forms of phosphate consume or add caustic as the phosphate shifts to the proper form. For example, addition of monosodium phosphate consumes caustic as it reacts with caustic to form disodium phosphate in the boiler water according to the following reaction:</span></p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="72%">
<tbody>
<tr>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">NaH<sub>2</sub>PO<sub>4</sub></span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">+</span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">NaOH</span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;"><font face="Symbol">®</font></span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">Na<sub>2</sub>HPO<sub>4</sub></span></td>
<td align="middle" style="margin: 0px;" width="15%">
<span style="text-shadow: none;">+</span></td>
<td align="middle" style="margin: 0px;" width="15%">
<span style="text-shadow: none;">H<sub>2</sub>O</span></td>
</tr>
<tr>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">monosodium phosphate</span></td>
<td align="middle" style="margin: 0px;" width="14%">
</td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">sodium hydroxide</span></td>
<td align="middle" style="margin: 0px;" width="14%">
</td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">disodium phosphate</span></td>
<td align="middle" style="margin: 0px;" width="15%">
</td>
<td align="middle" style="margin: 0px;" width="15%">
<span style="text-shadow: none;">water</span></td>
</tr>
</tbody>
</table>
<p style="text-align: justify;">
<br />
Conversely, addition of trisodium phosphate adds caustic, increasing boiler water pH:</p>
<table border="0" cellpadding="3" cellspacing="0" style="color: rgb(102, 102, 102); font-family: Arial, Helvetica, san-serif; text-align: center;" width="72%">
<tbody>
<tr>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">Na<sub>3</sub>PO<sub>4</sub></span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">+</span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">H<sub>2</sub>O</span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;"><font face="Symbol">®</font></span></td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">Na<sub>2</sub>HPO<sub>4</sub></span></td>
<td align="middle" style="margin: 0px;" width="15%">
<span style="text-shadow: none;">+</span></td>
<td align="middle" style="margin: 0px;" width="15%">
<span style="text-shadow: none;">NaOH</span></td>
</tr>
<tr>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">trisodium phosphate</span></td>
<td align="middle" style="margin: 0px;" width="14%">
</td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">water</span></td>
<td align="middle" style="margin: 0px;" width="14%">
</td>
<td align="middle" style="margin: 0px;" width="14%">
<span style="text-shadow: none;">disodium phosphate</span></td>
<td align="middle" style="margin: 0px;" width="15%">
</td>
<td align="middle" style="margin: 0px;" width="15%">
<span style="text-shadow: none;">sodium hydroxide</span><br />
</td>
</tr>
</tbody>
</table>
Benefit and Features
- Highly active phosphate based compound, economical in use.
- Easily dissolved in water for dosing.
- Scale problems due to calcium are eliminated.
- Maintains sludge in a non-adherent state for ease of blow down.
- Simple test to determine level of treatment.
-
Can be used for boilers of all pressures.
Rxsol Hardness Control does not influence the alkalinity in the system
RXSOL brand is well known name for Hardness Phosphate control manufacturer, Exporter and supplier in Mumbai, Chennai, Kolkata, Vizag, Goa, Kochin, Manglore, Kandla, Gandhidham, Fujairah, Dubai, Sharjah, Uae, Gulf Middle East
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