Properties of YD heat transfer oil
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Does that teacher know the properties of YD heat transfer oil?
Technical Specifications
Items: YD300, YD310, YD320, YD330, YD340, YD350
Appearance: Light yellow, transparent, homogeneous, non-separating
Color: Orange-yellow, transparent
Kinematic viscosity at 50°C: mm²/s – 16–22, 17–23, 18–26, 20–28, 22–30, 24–32
Flash point (open cup), °C: Not less than 175, 180, 184, 190, 195, 198
Acid value, mg KOH/g: 0.03, 0.03, 0.03, 0.04, 0.05, 0.05
Residue on ignition: No more than 0.025, 0.025, 0.030, 0.030, 0.050, 0.050
Pour point, °C: Not higher than -10, -10, -12, -12, -12, -12
Moisture content: Trace amounts
Specific gravity: 0.84–0.85, 0.84–0.85, 0.85–0.87, 0.85–0.87, 0.86–0.90, 0.86–0.90
Copper strip corrosion test: Passed, passed, passed, passed, passed, passed
Process temperature limit: Less than 300, 310, 330, 330, 350, 360°C
Mechanical impurities: None
Maximum operating temperature, °C: 300, 310, 325, 330, 340, 350
Thermal expansion coefficient: 250, 7.03–7.05, 6.88–6.96, 6.80–6.86, 6.69–6.95, 6.95–6.99, 7.01–7.04; 300, 8.2–8, 7.8–7, 6.7–7, 7.5–7.7, 7.4–7.6, 7.3–7.5
Thermal conductivity, kcal/m·h·°C: 1000: 0.113, 0.112, 0.111, 0.110, 0.106, 0.105; 2000: 0.107, 0.106, 0.105, 0.100, 0.096, 0.095
Specific heat capacity: 1000: 0.570, 0.565, 0.560, 0.555, 0.550, 0.545; 2000: 0.665, 0.660, 0.655, 0.650, 0.645, 0.640
Viscosity: 100: 5.00, 5.05, 5.10, 5.15, 5.20, 5.50; 2000: 1.00, 1.05, 1.10, 1.15, 1.20, 1.50
Applications and equipment of heat transfer oils in industrial fields:
Chemical industry and petroleum: Distillation, rectification, concentration, evaporation
Polymerization, condensation, melting processes
Petroleum and gas processing: Gas drying, purification, raw material transportation, heavy oil heating systems
Plastics and rubber processing: Hot pressing, calendering, extrusion, film processing equipment
Fine chemicals: Synthesis equipment for pharmaceutical and pesticide intermediates
Fats and oils industry: Fatty acid distillation, deodorization, esterification, concentration equipment
Synthetic fibers: Polymerization reactions, melt spinning, thermosetting fiber finishing equipment
Carbon processing: Asphalt melting, impregnation, mixing and molding equipment
Papermaking: Thermal melting machines, corrugated board processing machines, dryers
Wood processing: Composite board pressing, drying equipment
Automobile manufacturing: Coating drying, surface treatment equipment
Electrical industry: Wire and cable manufacturing
Construction and building materials industry: Asphalt melting, insulation, concrete curing, gypsum board drying equipment
Energy industry: Waste heat recovery, solar energy utilization systems
Food processing: Grain drying, food baking equipment
Textile and dyeing industry: Heat-setting dyeing, thermal setting, drying equipment
Heating and air conditioning industry: Heat sources for heating systems
Guidelines for using YD heat transfer oils:
1. An expansion tank and an oil storage tank must be installed in the heating circulation system to ensure safe operation. 2. The oil temperature in the expansion tank should generally be below 60°C. 3. Bypass microporous filters (with a general pore size of around 20μ) should be installed in the circulation system pipelines, and they need to be cleaned and replaced regularly. 4. Oil-resistant, pressure-resistant, and high-temperature-resistant gaskets should be used at valve and flange connections to prevent leakage of heat transfer oil. 5. In the hot oil furnace system, high-level exhaust and low-level drainage facilities should be installed, with regular discharge of waste materials. 6. Before using heat transfer oil in the new hot oil furnace system, clean the interior of the furnace of rust and other impurities using TY-1 hot oil furnace cleaner, and remove any impurities and moisture ； When a used hot oil furnace system is overhauled or its oil is replaced, a cleaning agent is used to remove the oil residues and carbon deposits inside the furnace. 7. During the startup phase of the hot oil furnace, dehydration and removal of light components are necessary; the heating rate should not be too fast, at around 20°C per hour. 8. When driving, start the circulation pump first, then ignite the engine ； When stopping the machine, first shut down the fire; keep the circulation pump running until the oil temperature drops below 100°C before stopping the pump. 9. In the event of a sudden power outage, the oil inlet valves of the furnace should be closed to allow the hot oil inside the furnace tubes to flow into the low-level tank, while the cold oil from the expansion tank flows into the furnace tubes. 10. When different types of heat transfer oils are used together, mixing tests must be conducted, and proof confirming their safety and reliability must be provided before use. 11. The flow velocity of the heat transfer oil inside the pipes is greater than 2 meters per second ； The temperature difference between the inlet and outlet of the hot oil furnace is around 30°C, and temperature, pressure, and flow meters are installed at both the inlet and outlet. 12. The operating temperature of the heat transfer oil is above 280°C, and the failure criteria are tested every six months ； Below 280°C, the scrap criteria are tested once a year. When the viscosity change is greater than ±20% ； The flash point variation is greater than ±15% ； Acid value greater than 0.5 mgKOH/g ； Residual carbon greater than 1.5W% ； When its comprehensive evaluation index is greater than 80, oil change can be performed.
Items: YD300, YD310, YD320, YD330, YD340, YD350
Appearance: Light yellow, transparent, homogeneous, non-separating
Color: Orange-yellow, transparent
Kinematic viscosity at 50°C: mm²/s – 16–22, 17–23, 18–26, 20–28, 22–30, 24–32
Flash point (open cup), °C: Not less than 175, 180, 184, 190, 195, 198
Acid value, mg KOH/g: 0.03, 0.03, 0.03, 0.04, 0.05, 0.05
Residue on ignition: No more than 0.025, 0.025, 0.030, 0.030, 0.050, 0.050
Pour point, °C: Not higher than -10, -10, -12, -12, -12, -12
Moisture content: Trace amounts
Specific gravity: 0.84–0.85, 0.84–0.85, 0.85–0.87, 0.85–0.87, 0.86–0.90, 0.86–0.90
Copper strip corrosion test: Passed, passed, passed, passed, passed, passed
Process temperature limit: Less than 300, 310, 330, 330, 350, 360°C
Mechanical impurities: None
Maximum operating temperature, °C: 300, 310, 325, 330, 340, 350
Thermal expansion coefficient: 250, 7.03–7.05, 6.88–6.96, 6.80–6.86, 6.69–6.95, 6.95–6.99, 7.01–7.04; 300, 8.2–8, 7.8–7, 6.7–7, 7.5–7.7, 7.4–7.6, 7.3–7.5
Thermal conductivity, kcal/m·h·°C: 1000: 0.113, 0.112, 0.111, 0.110, 0.106, 0.105; 2000: 0.107, 0.106, 0.105, 0.100, 0.096, 0.095
Specific heat capacity: 1000: 0.570, 0.565, 0.560, 0.555, 0.550, 0.545; 2000: 0.665, 0.660, 0.655, 0.650, 0.645, 0.640
Viscosity: 100: 5.00, 5.05, 5.10, 5.15, 5.20, 5.50; 2000: 1.00, 1.05, 1.10, 1.15, 1.20, 1.50
Applications and equipment of heat transfer oils in industrial fields:
Chemical industry and petroleum: Distillation, rectification, concentration, evaporation
Polymerization, condensation, melting processes
Petroleum and gas processing: Gas drying, purification, raw material transportation, heavy oil heating systems
Plastics and rubber processing: Hot pressing, calendering, extrusion, film processing equipment
Fine chemicals: Synthesis equipment for pharmaceutical and pesticide intermediates
Fats and oils industry: Fatty acid distillation, deodorization, esterification, concentration equipment
Synthetic fibers: Polymerization reactions, melt spinning, thermosetting fiber finishing equipment
Carbon processing: Asphalt melting, impregnation, mixing and molding equipment
Papermaking: Thermal melting machines, corrugated board processing machines, dryers
Wood processing: Composite board pressing, drying equipment
Automobile manufacturing: Coating drying, surface treatment equipment
Electrical industry: Wire and cable manufacturing
Construction and building materials industry: Asphalt melting, insulation, concrete curing, gypsum board drying equipment
Energy industry: Waste heat recovery, solar energy utilization systems
Food processing: Grain drying, food baking equipment
Textile and dyeing industry: Heat-setting dyeing, thermal setting, drying equipment
Heating and air conditioning industry: Heat sources for heating systems
Guidelines for using YD heat transfer oils:
1. An expansion tank and an oil storage tank must be installed in the heating circulation system to ensure safe operation. 2. The oil temperature in the expansion tank should generally be below 60°C. 3. Bypass microporous filters (with a general pore size of around 20μ) should be installed in the circulation system pipelines, and they need to be cleaned and replaced regularly. 4. Oil-resistant, pressure-resistant, and high-temperature-resistant gaskets should be used at valve and flange connections to prevent leakage of heat transfer oil. 5. In the hot oil furnace system, high-level exhaust and low-level drainage facilities should be installed, with regular discharge of waste materials. 6. Before using heat transfer oil in the new hot oil furnace system, clean the interior of the furnace of rust and other impurities using TY-1 hot oil furnace cleaner, and remove any impurities and moisture ； When a used hot oil furnace system is overhauled or its oil is replaced, a cleaning agent is used to remove the oil residues and carbon deposits inside the furnace. 7. During the startup phase of the hot oil furnace, dehydration and removal of light components are necessary; the heating rate should not be too fast, at around 20°C per hour. 8. When driving, start the circulation pump first, then ignite the engine ； When stopping the machine, first shut down the fire; keep the circulation pump running until the oil temperature drops below 100°C before stopping the pump. 9. In the event of a sudden power outage, the oil inlet valves of the furnace should be closed to allow the hot oil inside the furnace tubes to flow into the low-level tank, while the cold oil from the expansion tank flows into the furnace tubes. 10. When different types of heat transfer oils are used together, mixing tests must be conducted, and proof confirming their safety and reliability must be provided before use. 11. The flow velocity of the heat transfer oil inside the pipes is greater than 2 meters per second ； The temperature difference between the inlet and outlet of the hot oil furnace is around 30°C, and temperature, pressure, and flow meters are installed at both the inlet and outlet. 12. The operating temperature of the heat transfer oil is above 280°C, and the failure criteria are tested every six months ； Below 280°C, the scrap criteria are tested once a year. When the viscosity change is greater than ±20% ； The flash point variation is greater than ±15% ； Acid value greater than 0.5 mgKOH/g ； Residual carbon greater than 1.5W% ； When its comprehensive evaluation index is greater than 80, oil change can be performed.
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2# SQP20070627 Where can I find the technical specifications for heat transfer oil?
I. Potential dangers associated with the various properties of heat transfer oil during use 1. Thermal stability During use, due to local overheating in the heating system, heat transfer oil can undergo thermal cracking reactions, resulting in the formation of volatile oligomers with low flash points. Polymerization reactions between these oligomers then lead to the formation of insoluble and non-melting polymers, which not only hinder the flow of the oil and reduce its heat transfer efficiency but also increase the risk of local overheating, deformation, and even rupture of the pipes. 2 Oxidation Stability: In heat transfer oils, the air present in them, along with any residual air in the heating medium system, can undergo oxidation reactions when heated. This results in the formation of organic acids and gums that adhere to the oil transport pipes. Such phenomena not only reduce the service life of the heat transfer medium and cause pipe blockages, but they also lead to acidic corrosion of the pipes, increasing the risk of leaks in the system. II. Protection of heat transfer oil during use 1. Preventing the oxidation of heat transfer oil Since heat transfer oil is prone to oxidation reactions when operating at high temperatures in heat transfer systems, which leads to its deterioration, high-temperature expansion tanks are usually filled with nitrogen to maintain a sealed environment within the heat transfer system, thereby preventing the oil from coming into contact with air and extending its service life. 2. Prevent coking of heat transfer oil When the operating temperature of the heat transfer oil exceeds its maximum allowable temperature, coking occurs on the walls of the oil conduits. As the layer of coke thickens, the higher wall temperature further promotes the formation of more coke; this continuous thickening of the wall layers leads to a decline in the heat transfer efficiency, with an explosion potentially occurring at any time. Therefore, it is necessary to strictly control the temperature of the heat transfer oil at the outlet of the heat carrier so that it does not exceed the maximum operating temperature, and the maximum film temperature of the heat carrier should be lower than the allowable oil film temperature. 3. Regularly inspect for leakage points. Strengthen on-site monitoring to ensure that the heat transfer system is in good condition and free of leaks; regularly check for corrosion and leakage in the equipment, and carry out repairs promptly upon detecting any leaks. Therefore, the heat transfer medium system must be designed properly; during operation, the wall thickness and pressure resistance of the equipment should be regularly checked, and pressure gauges, safety valves, and vent pipes should be installed on the equipment and pipelines. 4. Prevent water and other impurities from entering the heat carrier. As the heat carrier is heated, the water dissolved in it vaporizes rapidly, causing the pressure inside the heat transfer tube to rise sharply to an uncontrollable level, which can lead to explosion accidents. Therefore, before being put into use, the heat transfer oil should be heated slowly to remove water and other light impurities from it. 5. Regular testing of heat transfer oil parameters Periodically measure and analyze physical and chemical properties of the heat carrier such as residual carbon, acid value, viscosity, flash point, and melting point, in order to keep track of any changes in its quality and to determine the reasons for such changes. When the acid value exceeds 0.5 mgKOH/g, the viscosity changes by 15%, the flash point changes by 20%, and the residual carbon (by mass) reaches 1.5%, it indicates that the properties of the heat transfer oil have changed. New heat carriers should be replenished regularly and appropriately to keep the carbon residue level in the system basically stable.