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THERMIC FLUID DECARBONISING CHEMICAL |
Thermic Fluid is the heating media which transfer the heat in close loop cycle.
It is available in two forms……….
- Mineral heat transfer oil.
- Synthetic heat transfer oil.
Mineral oil can withstand maximum temperature up to 280˚C. Synthetic oil can withstand maximum temperature up to 310˚C.
Continuous use of thermic fluid systems results in to deteriorating of Thermic fluid.
The main causes for deterioration are oxidation & cracking. |
- Oxidation: Oxidation at higher temperatures causes formation of sticky carbon. This causes choking of the system & reduced heat transfer efficiency & also produces acidic products. These add to viscosity of the oil along with increase in corrosion rate at internal parts of thermic fluid heating system.
- Cracking: Overheating of the thermic fluid caused by insufficient circulation. This results in to de-polymerization of long chain compound. This localized heating above cracking temperature of oil. Cracking results in to release higher hydrocarbons which increases viscosity & reduces flash point of thermic fluid. Polymerization cause by these hydrocarbons form deposits reducing flow rate & heat transfer efficiency.
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- PARAMETERS OF THERMI FLUID TO BE CHEKED :
- Appearance
- Moisture content
- Flash Point
- Fire Point
- Auto ignitation temperature
- Kinematics Velocity
- Density
- Specific Gravity
- Coefficient of Thermal Expansion
- Average molecular weight
- Pour point
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- DETERATION OF THERMIC FLUID:
- PARAMTERS:
- Reduction in flash point.
- Increase in Viscosity.
- Colour changes to darker shade.
- Increase in acid no.
- Lowering of boiling point.
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- Reduction in pump circulation in pump circulation rate.
- Reduction in heat transfer efficiency.
- Higher fuel consumption.
- Less Productivity
- Reduction in life.
- Safety hazards.
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CHEMICALS USE FOR THERMIC FLUID DECARBONIZING ARE:
- Thermin- DC
- Fueline-R
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COMPARSION BETWEEN
FUELINE – R (OFFLINE PRODUCT)
AND
THERMIN-DC (ONLINE PRODUCT)
Sr. |
Parameter |
Fueline-R |
Thermin-DC |
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INGRADIENTS – MFG. DETAILS. |
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Base |
Synthetic Lude Oil |
Synthetic Thermic Fluid |
-
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Strong carbon dispersant. |
Organic oil based |
Organic oil based |
-
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Viscosity reducer. |
Higher mol. Wt. |
Higher mol. Wt. |
-
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Penitratant |
Synthetic |
Synthetic |
-
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Ionic emulsifier |
Organic 10m |
Organic 10m |
-
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Corr.inhibitor |
Built in base |
Built in base |
-
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PROCESS BLENDING |
COLD |
CLOD |
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PHYSICAL & CHEMICAL PROPERTIES. |
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-
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pH |
Acidic |
Acidic |
-
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Specific Gravity |
0.75 – 0.85 |
0.75 – 0.9 |
-
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Viscosity |
15-20cst |
18-30cst |
-
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Flash Point – open cup |
140-160˚C |
190-200˚C |
-
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Working temp.-close lop |
120˚C |
310˚C |
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EFFECT ON THERMIC FLUID. |
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Application |
Offline |
Online |
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Thermic fluid after treatment |
Complete drain |
Reused as normal |
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pH |
Increases slightly |
Increases slightly |
-
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Specific Gravity |
Decreases nominally |
Decreases nominally |
-
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Viscosity |
Decreases drastically |
Decreases drastically |
-
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Flash Point |
Remains same |
Remains same |
-
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Acid Valve |
Decreases slightly |
Decreases slightly |
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Autoignitation Temperature |
Remains same |
Remains same |
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Pour Point |
Decreases |
Decreases |
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CASES OF WORKING. |
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FUELINE-R |
THERMIN-DC |
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Working Conditions |
Flash point below 150˚C |
Flash point below 150˚C |
Flash point above 150˚C |
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Type of action |
Offline work |
Online work |
Online work |
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Working temperature |
Less than 100˚C |
Up to 300˚C |
Up to 300˚C |
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Dose |
7-10% |
3-5% |
3-5% |
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Down time |
24-36hrs. |
Nil |
Nil |
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Addition when |
Immediate |
4 day prior to drain |
Immediate |
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THERMIN DC
ONLINE THERMIC FLUID DECARBONIZING CHEMICAL
Thermin DC is a powerful formation which is a combination of strong carbon dispersant, emulsifier & corrosion inhibitor.
This formulation is used effectively for online decarbonization of entire thermic fluid system.
FUELINE – R
PRODUCT DETAILS ADVANTAE OF USING FUELINE – R
Fueline – R is powerful formulation which is combination of strong carbon dispersant, emulsifier & corrosion inhibitor.
This formulation is used effectively for decarbonization & descaling of entire thermic fluid system. This is an ideal solution
to be applied before replacement of thermic fluid from any system.
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