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Oxygen Scavenger Carbohydrazide
Powerful concentrated corrosion inhibitor acts as oxygen scavengers used to effectively remove dissolved OXYGEN
Carbohydrazide in BOILER means no oxygen is entering the boiler Carbohydrazide will help to Decrease oxygen on HP, LP boiler. Carbohydrazid also called Carbodihydrazide, is a high performance oxygen scavenger which can be used in all types of boilers. Carbohydrazide is a white, water-soluble solid that decomposes upon melting point around 153°C.
Carbohydrazide can be used as oxygen scrubber as direct replacement for Hydrazine in any boiler without the associated safety hazards and handling precautions. The product is based on volatile chemistry and so leaves no dissolved solids and minimal ammonia to the boiler system.
Carbohydrazide does provide outstanding protection from oxygen corrosion together with excellent feed water and boiler system passivation. Carbohydrazide reacts directly with oxygen. It helps prevent oxygen damage and continues to passivate metal surfaces during wet lay-up. Carbohydrazide can also be used as a curing agent for epoxide-type resins.
BENEFITS -
RAPID REACTION :
The catalyst RXSOL-81-6119-220 speeds up the removal of dissolved oxygen. Oxygen can be removed completely even from cold water due to catalytic action. Normal reaction time is as low as 15 to 20 seconds as against 10 to 30 minutes for uncatalysed sulphite.
EASY TO HANDLE :
RXSOL-81-6119-220 is a free flowing powder. It is soluble in water even at lower feed water temperature.It is non-toxic and non-corrosive and, therefore, can be handled easily.
pH CONTROL :
RXSOL-81-6119-220 is formulated to get proper pH control for optimum availability of catalyst for rapid oxygen removal.
COST EFFECTIVE :
The catalytic action reduces the excessive requirement of sulphite in feed water for the rapid removal of oxygen. Thus the quantity required is lower, making RXSOL-81-6119-220 treatment cost effective.
APPLICATION AND DOSAGE :
RXSOL-81-6119-220 solution should be dosed continuously. Dissolve the required quantity of RXSOL-81-6119-220 gently in boiler feed water in a separate tank. Dose this solution continuously in the boiler feed water line after the deaerator.
Above 8 ppm of sodium sulphite is required for the removal of 1 ppm of dissolved oxygen from boiler
feed water. About 10% to 20% of excess sulphite should be dosed to provide oxygen consuming reserve.
The table below gives the approximate dosage.
| Feed Water Temperature | RXSOL-81-6119-220 dosage in gms per ton ofsteam generation |
|
More than 80oC |
15 |
| 60 to 80oC | 30 |
| 40 to 60oC | 60 |
| Less than 40oC | 100 |
The rmax will provide technical assistance in arriving at optimum dosages for your operating conditions and requirements and in selecting a suitable dosing system for your plant
Physical properties :::
Carbohydrazide the Hydrazide of carbonic acid
| Molecular formula: | OC(N₂H₃)₂ |
| CAS No.: | |
| Molecular weight: | 90.09 |
| Description: | White Solid |
| odor: | Characteristic Smell |
| Density: | 1.34 (25/4°C) |
| Solubility: | Soluble in Water, Ethanol |
| vapor density: | 1.04 (air = 1) |
| vapor pressure: |
14.4 mm Hg at 25°C |
As proper level Carbohydrazide protect metal machinery parts from corrosion.
Carbohydrazide is one of popular an alternative Oxygen Scavenger. It is very important to protect boiler components from feed boiler water corrosion.
Carbohydrazide also passivates metals and reduces metal oxides converting ferric oxide to ferrous oxide and converting cupric oxide to cuprous oxide.
Carbohydrazide is widely used in the production of drugs, herbicides, plant growth regulators, and dyestuffs. Carbohydrazide is a white crystalline solid with a melting point of 153-154 °C. It decomposes upon melting. It is very water soluble and largely insoluble in organic solvents.