Heat transfer oil T66
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Regarding heat transfer oil: 1. T66 is currently in short supply in China; it’s needed soon. What are the ways to obtain it? 2. Those of you who are currently using this product, could you please provide the contact information for suppliers? I’ve been looking for it for several days with no progress. 3. Are there any other grades that are currently performing well? I would like to express my thanks in advance; QQ: 42656213
Please refer to the following: Product description of THERMINOL® 66 synthetic heat transfer oil. THERMINOL® 66 is the most widely used high-temperature liquid synthetic heat transfer oil in the world; it can be used in a temperature range of -7 ℃ to 345 ℃ and possesses the following important properties. High thermal stability – THERMINOL® 66 is a liquid heat transfer oil used for heat transfer at high temperatures, and it can provide reliable operation for several years even at operating temperatures of 345 °C. In fact, THERMINOL® 66 has passed the heat stability test at 350°C. Excellent customer feedback – THERMINOL® 66 is the most widely used high-temperature liquid-phase synthesis thermal oil in the world, and no other thermal oil enjoys such a high level of customer satisfaction as it does. Reliability – THERMINOL® 66 has demonstrated its excellent performance in thousands of large-scale installations around the world. It should be noted that when a problem occurs in the heat transfer oil system, the production line must stop operating; therefore, do not choose heat transfer oil whose reliability has not been proven. For operating temperatures above 310°C, THERMINOL® 66 is your best choice. Anti-coking property – THERMINOL® 66 offers excellent performance in preventing the formation of solid particles and scale, ensuring more reliable operation of heat transfer oil systems. Application areas THERMINOL® 66 is widely used in various industrial fields, such as: the fiber industry ； Petroleum industry ； Plastic industry ； Oil industry: For more information on system design and applications, please email us or contact our sales representative. Typical properties of THERMINOL® 66:
Operating temperature range: –7 ℃ to 345 ℃
Appearance: Clear, light yellow liquid
Composition: Modified triphenyl compound
Water content: 150 ppm
Flash point: 184 ℃
Ignition point: 212 ℃
Auto-ignition point: 374 ℃
Dynamic viscosity at 40 ℃ and 100 ℃: 29.6 mm2/s and 3.8 mm2/s respectively
Density (at 25 ℃): 1005 kg/m3
Specific gravity (at 20 ℃): 1.012
Coefficient of thermal expansion (at 200 ℃): 0.000819/℃
Average molecular weight: 252
Freezing point: –32 ℃
Pumpability: 2000 mm2/s at –3 ℃, 300 mm2/s at 11 ℃
Minimum temperature for full turbulent flow (Re=10000): 20 feet/second in 1-inch pipes; 72 ℃ and 53 ℃ respectively
Minimum temperature in the turbulent transition zone (Re=2000): 20 feet/second in 1-inch pipes; 35 ℃ and 26 ℃ respectively
Boiling range (10% to 90%): 348 ℃ to 392 ℃
Normal boiling point: 359 ℃
Maximum allowable main fluid temperature: 345 ℃
Heat of vaporization: 272 kJ/kg
Optimal operating range: 0–345 ℃
Maximum allowable film temperature: 375 ℃
Quasicritical temperature: 569 ℃
Quasicritical pressure: 24.3 bar
Quasicritical density: 317 kg/m3
Wanda Xceltherm-HT Synthetic Heat Transfer Oil
Product description: HT is the most widely used high-temperature liquid synthetic heat transfer oil in the world. It can be used in a temperature range of –37 ℃ to 350 ℃, and it possesses the following important properties. High thermal stability—HT is a liquid heat transfer oil used for heat transfer at high temperatures, offering reliable operation for several years. Good customer feedback – HT is the most widely used high-temperature liquid-phase synthesis heat transfer oil in the world, enjoying a high level of customer satisfaction. Reliability—HT has demonstrated its excellent performance in thousands of large-scale installations around the world. For operating temperatures above 310°C, Xceltherm-HT is your best choice. Anti-coking property – Xceltherm-HT exhibits excellent performance in preventing the formation of solid particles and scale, ensuring more reliable operation of the heat transfer oil system. Application scope: HT is widely used in the industrial sector, such as in the chemical fiber industry ； Petroleum industry ； Plastic industry ； Petroleum industry. Typical characteristics: Xceltherm-HT has a temperature range of –37 ℃ to 350 ℃. It appears as a clear, light yellow liquid. Its components include modified benzene dibenzyltoluene; it is a high-performance synthetic heat transfer oil. Product type: V. Chemical composition: Enkli-Ⅴ T350. Brand: Enkli. Chemical name: Dibenzyltoluene. Product description: This product has the same chemical composition as DBT from Total in France and NeoSK-1400 from RIKEN in Japan. 1. Good molecular stability: The chemical composition of Enkli-Ⅴ T350 is diphenylmethyltoluene, with a single molecular structure. Heat and oxidation resistant; in properly designed and properly operated systems, there is little cracking and coking, resulting in a long service life. 2. High product purity: The Enkli-Ⅴ T350 content is over 98%, with no residual carbon or light components. 3. Good thermal stability: Enkli-Ⅴ T350 has a high initial boiling point, a narrow boiling range, and low vapor pressure; it remains in liquid state at an operating temperature of 350°C, resulting in minimal evaporation losses and low degradation due to high-temperature cracking, thus exhibiting high thermal stability. It can be used as heat transfer oil No. 400. 4. Low viscosity: The dynamic viscosity of Enkli-Ⅴ T350 is less than 1/2 that of partially hydrogenated triphenyls, which helps to reduce system resistance and energy consumption. 5. High thermal conductivity: The heat transfer coefficient of Enkli-Ⅴ T350 is 1463 W/m2·K at 320°C, which is 15% higher than that of triphenylhydride. 6. Good safety performance: Enkli-Ⅴ T350 has a high boiling point (390°C), a high flash point (200°C), a high auto-ignition temperature (470°C), and low vapor pressure, which facilitates safe production and helps prevent fires ； Dibenzyltoluene is odorless, non-toxic, and harmless; it does not cause cancer, birth defects, or genetic mutations, which makes it beneficial for the protection of workers and the environment. Benzyl toluene Product description: This product has the same chemical composition as DBT from Total in France and NeoSK-1400 from Kyowa Research Institute in Japan. 1. Good molecular stability: T350 is composed of diphenylmethyltoluene, featuring a single molecular structure. Heat and oxidation resistant; in properly designed and properly operated systems, there is little cracking and coking, resulting in a long service life. 2. High product purity: The T350 content is over 98%, with no residual carbon or light components. 3. Good thermal stability: T350 has a high initial boiling point, a narrow boiling range, and low vapor pressure; it remains in liquid state at an operating temperature of 350°C, resulting in minimal evaporation losses and low degradation due to high-temperature cracking, thus offering excellent thermal stability. It can be used as heat transfer oil No. 400. 4. Low viscosity: The dynamic viscosity of T350 is less than 1/2 that of partially hydrogenated triphenyls, which helps to reduce system resistance and energy consumption. 5. High thermal conductivity: The heat transfer coefficient of T350 is 1463 W/m2·K at 320°C, which is 15% higher than that of triphenylhydride. 6. Good safety performance: T350 has a high boiling point (390°C), a high flash point (200°C), a high auto-ignition temperature (470°C), and low vapor pressure, which facilitates safe production and fire prevention ； Dibenzyltoluene is odorless, non-toxic, and harmless; it does not cause cancer, birth defects, or genetic mutations, which makes it beneficial for the protection of workers and the environment.
Operating temperature range: –7 ℃ to 345 ℃
Appearance: Clear, light yellow liquid
Composition: Modified triphenyl compound
Water content: 150 ppm
Flash point: 184 ℃
Ignition point: 212 ℃
Auto-ignition point: 374 ℃
Dynamic viscosity at 40 ℃ and 100 ℃: 29.6 mm2/s and 3.8 mm2/s respectively
Density (at 25 ℃): 1005 kg/m3
Specific gravity (at 20 ℃): 1.012
Coefficient of thermal expansion (at 200 ℃): 0.000819/℃
Average molecular weight: 252
Freezing point: –32 ℃
Pumpability: 2000 mm2/s at –3 ℃, 300 mm2/s at 11 ℃
Minimum temperature for full turbulent flow (Re=10000): 20 feet/second in 1-inch pipes; 72 ℃ and 53 ℃ respectively
Minimum temperature in the turbulent transition zone (Re=2000): 20 feet/second in 1-inch pipes; 35 ℃ and 26 ℃ respectively
Boiling range (10% to 90%): 348 ℃ to 392 ℃
Normal boiling point: 359 ℃
Maximum allowable main fluid temperature: 345 ℃
Heat of vaporization: 272 kJ/kg
Optimal operating range: 0–345 ℃
Maximum allowable film temperature: 375 ℃
Quasicritical temperature: 569 ℃
Quasicritical pressure: 24.3 bar
Quasicritical density: 317 kg/m3
Wanda Xceltherm-HT Synthetic Heat Transfer Oil
Product description: HT is the most widely used high-temperature liquid synthetic heat transfer oil in the world. It can be used in a temperature range of –37 ℃ to 350 ℃, and it possesses the following important properties. High thermal stability—HT is a liquid heat transfer oil used for heat transfer at high temperatures, offering reliable operation for several years. Good customer feedback – HT is the most widely used high-temperature liquid-phase synthesis heat transfer oil in the world, enjoying a high level of customer satisfaction. Reliability—HT has demonstrated its excellent performance in thousands of large-scale installations around the world. For operating temperatures above 310°C, Xceltherm-HT is your best choice. Anti-coking property – Xceltherm-HT exhibits excellent performance in preventing the formation of solid particles and scale, ensuring more reliable operation of the heat transfer oil system. Application scope: HT is widely used in the industrial sector, such as in the chemical fiber industry ； Petroleum industry ； Plastic industry ； Petroleum industry. Typical characteristics: Xceltherm-HT has a temperature range of –37 ℃ to 350 ℃. It appears as a clear, light yellow liquid. Its components include modified benzene dibenzyltoluene; it is a high-performance synthetic heat transfer oil. Product type: V. Chemical composition: Enkli-Ⅴ T350. Brand: Enkli. Chemical name: Dibenzyltoluene. Product description: This product has the same chemical composition as DBT from Total in France and NeoSK-1400 from RIKEN in Japan. 1. Good molecular stability: The chemical composition of Enkli-Ⅴ T350 is diphenylmethyltoluene, with a single molecular structure. Heat and oxidation resistant; in properly designed and properly operated systems, there is little cracking and coking, resulting in a long service life. 2. High product purity: The Enkli-Ⅴ T350 content is over 98%, with no residual carbon or light components. 3. Good thermal stability: Enkli-Ⅴ T350 has a high initial boiling point, a narrow boiling range, and low vapor pressure; it remains in liquid state at an operating temperature of 350°C, resulting in minimal evaporation losses and low degradation due to high-temperature cracking, thus exhibiting high thermal stability. It can be used as heat transfer oil No. 400. 4. Low viscosity: The dynamic viscosity of Enkli-Ⅴ T350 is less than 1/2 that of partially hydrogenated triphenyls, which helps to reduce system resistance and energy consumption. 5. High thermal conductivity: The heat transfer coefficient of Enkli-Ⅴ T350 is 1463 W/m2·K at 320°C, which is 15% higher than that of triphenylhydride. 6. Good safety performance: Enkli-Ⅴ T350 has a high boiling point (390°C), a high flash point (200°C), a high auto-ignition temperature (470°C), and low vapor pressure, which facilitates safe production and helps prevent fires ； Dibenzyltoluene is odorless, non-toxic, and harmless; it does not cause cancer, birth defects, or genetic mutations, which makes it beneficial for the protection of workers and the environment. Benzyl toluene Product description: This product has the same chemical composition as DBT from Total in France and NeoSK-1400 from Kyowa Research Institute in Japan. 1. Good molecular stability: T350 is composed of diphenylmethyltoluene, featuring a single molecular structure. Heat and oxidation resistant; in properly designed and properly operated systems, there is little cracking and coking, resulting in a long service life. 2. High product purity: The T350 content is over 98%, with no residual carbon or light components. 3. Good thermal stability: T350 has a high initial boiling point, a narrow boiling range, and low vapor pressure; it remains in liquid state at an operating temperature of 350°C, resulting in minimal evaporation losses and low degradation due to high-temperature cracking, thus offering excellent thermal stability. It can be used as heat transfer oil No. 400. 4. Low viscosity: The dynamic viscosity of T350 is less than 1/2 that of partially hydrogenated triphenyls, which helps to reduce system resistance and energy consumption. 5. High thermal conductivity: The heat transfer coefficient of T350 is 1463 W/m2·K at 320°C, which is 15% higher than that of triphenylhydride. 6. Good safety performance: T350 has a high boiling point (390°C), a high flash point (200°C), a high auto-ignition temperature (470°C), and low vapor pressure, which facilitates safe production and fire prevention ； Dibenzyltoluene is odorless, non-toxic, and harmless; it does not cause cancer, birth defects, or genetic mutations, which makes it beneficial for the protection of workers and the environment.
We’re using it now, but unfortunately I don’t know how to get in touch with them either; it has to be imported from abroad.
This heat transfer oil, dibenzyltoluene, seems to be available in Liaoning. I saw it online before.
Reply to 5# Heat transfer oil: Could you kindly reveal what type of heat transfer oil your company uses?
The manufacturer is Suzhou Shounuo Thermal Oil Co., Ltd
Actually, polysilicon plants don’t need thermal oil at such high prices; I specialize in 320-grade thermal oil, and several polysilicon manufacturers use my product. If you’re interested, feel free to contact me at 13673119808
High-temperature heat transfer oils generally come in the following brands and models: Dow DOWTHERM RP – USA, Sasol Marlotherm SH – Germany, Sogen 1400 – Japan, Akema DBT – France, and Shounuo T66 – USA. In the Chinese market, T66 has a high share of market; in the European market, SH has a high share. In terms of quality, the RP diarylalkyl types are the best, and their price is also slightly higher ； Next are SH, 1400, DBT, and other dibenzyltoluene compounds ； Those with lower quality are T66 hydrogenated triphenyl compounds. We provide the sales of imported synthetic heat transfer oils as well as technical services. Chen Ziqiang 15850306757 QQ for discussion: 391764210
This post was last edited by flootherm on 2011-8-2 at 12:26. 1) A rough assessment of thermal stability can be made based on the bond energy in the molecular structure; the order is roughly as follows: Shunuo T-66 ≥ Dow RP > dibenzyltoluene (Sasol Marlotherm SH-Germany, Kyocera NSK-1400-Japan, AkzoNobel DBT-France). 2) Based on the actual test results from specialized testing institutions: 1) Shunuo T-66: At 350 degrees, after being kept at that temperature for 1000 hours, its fragmentation rate is approximately 8.9%； As determined by the Special Inspection Agency, the maximum allowable operating temperature is 350 degrees. It belongs to the L-QD350 type. 2) Dow RP: No data available yet ； If there are any in the future, I’ll add them later. 3) Dibenzyltoluene (NSK-1400): At 330 degrees, after being held at that temperature for 1000 hours, its fission rate is approximately 7.7% ； As determined by the Special Inspection Agency, the maximum allowable operating temperature is 330 degrees. It belongs to the L-QD330 type. The spirit of undergraduate studies ultimately lies in letting the data speak.
What great material I’ve come across! Thank you so much. I’m extremely grateful for everyone’s support; if there are more good resources available, I hope they can be shared more often
The relationship between the Special Inspection Agency and Shuonuo is extraordinary