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details Thermal oil is a kind of professional oil with good heat resistance for indirect transfer of heat。Because it has heating symmetry, temperature control control..It can cause high temperature under low saturated steam pressure, the heat conduction effect is very good, green energy saving, transportation and practical operation are convenient and other characteristics, and it has been widely used in a variety of places in recent years, and its main uses and usage are more and more。
Heat conduction oil has the characteristics of heat cracking and organic chemical air oxidation, good heat transfer efficiency, fast heat removal, and very good heat resistance。Heat transfer oil as a heat transfer medium for industrial production oil has the following characteristics: under the standard of basically superheated steam, a very high operating temperature can be obtained。That can greatly reduce the actual operating pressure and protective provisions of the high temperature heating system software，Improve the reliability of system software and machine equipment;Processing requirements for heating and cooling at different temperatures can be considered in a wider temperature range，Or use the same heat transfer oil in the same system software to complete the processing process of high temperature heating and ultra-low temperature refrigeration。That is, it can reduce the diversity of system software and actual operation;The water treatment device and machine equipment are eliminated, the thermal efficiency of the system software is improved, and the maintenance labor of the machine equipment and pipes is reduced。That is, it can reduce the initial project investment and actual operation cost of the heating system software;In the case of leakage of system software caused by accidents, the heat transfer oil may ignite when it meets with the fire, which is the deficiency of the comparison between the heat transfer oil system software and the water vapor system software。However, it is not under the standard of leakage, because the thermal oil system software works under the bottom pressure standard, the actual operating protection factor is higher than the water and steam system software。Comparison of heat transfer oil and molten salt, another kind of high temperature heat transfer medium，When the operating temperature is above 400℃，Molten salt has certain advantages over thermal oil in the price and service life of heat transfer media，However, it has significant shortcomings in other aspects，Especially in the system software practical operation convenience level，The physical properties are relatively stable，It is not as easy to catch fire as light oil。
From the perspective of application and protection, its key features are：
1.In the allowable temperature range, the heat resistance is good, less slag formation, and the use period is longer。2.In the allowable temperature range, the thermal conductivity and flow performance are better than the pumpability characteristics。
3.No odor, no corrosion of machinery and equipment, little harm to the environment。
4.The freezing point is lower, the melting point is higher, and the low melting point component is less。Within the allowable temperature range, the saturated steam pressure is not high, and the volatilization damage is less。
5.When the temperature is higher than 70 ° C, the contact with the gas will be obviously oxidized by the air, and the system software needs to be sealed in hot work, and only allows it to touch the gas at the temperature below 70 ° C。
6.After heat, the volume increases obviously, and the moisture content is much higher than that of water。Temperature rise 100℃, volume moisture content reached 8% ~ 10%。
7.Excessive temperature will produce cracking or condensation reaction, slag formation or carbon accumulation in vessels and pipes。
8.When water or low melting point components are infiltrated, the steam pressure will be significantly increased after heat 。
9.The open flash point, ignition point and spontaneous combustion point are high, and it is not easy to ignite under the allowed temperature and closed condition。
10.According to the customer's settled area and the natural environment of the machine and equipment, it is proposed to select the suitable ultra-low temperature characteristics of the heat transfer oil。
Key characteristics
Heat resistance is heat conduction fluid.Important performance indicators。The heat resistance is not the same, and the level of catalytic cracking and convergence in its application is not the same。Catalytic cracking results in low boiling of small molecular water，Easy to make the system software cause gas resistance，Cavitation of the pump，In addition, it also leads to higher volatilization loss of oil products and air pollution;Thermal polymerization results in high boiling of biological macromolecules，It slowly builds up on the surface of electric heaters and pipes，The resulting carbon deposits will harm the heat transfer efficiency and temperature control precision of the system software。L-Q series product heat transfer fluid selected with excellent heat resistance of the basic oil and preservatives, so the commodity has优良Heat resistance。
Oxidation stability of air is another key performance index of heat transfer fluid。Open system software or swelling tank do not use N2 closed system software, oil and gas contact the page will produce REDOX reaction。Generally speaking, under the standard of higher than 60 ° C, the oil and gas contact produces air oxidation, and the oxidation products slowly produce collagen fibers and residues, which adhere to the electric heater and the pipe surface and cause carbon deposition。In addition, acidic substances caused by REDOX reactions will continue to etch machinery and equipment, leading to leaks。L-Q series product heat transfer fluid selected with excellent anti-oxidation basic oil and high temperature anti-oxygen and anti-scale preservatives, can inhibit the rate of air oxidation of oil sludge and the trend of accumulation, so that the system software to maintain a stable actual effect of heat transfer。
The initial distillation point of low volatile heat transfer liquid is selected to indicate its volatile substance。The heat conduction fluid applied in the open heating system software, such as the initial distillation point is less than the application temperature, easy to cause cavitation of the pump, the computer operating system causes gas resistance, and the volatilization loss is too large。The high initial distillation point of the L-Q series heat transfer fluid enables it to have a very low saturated vapor pressure and evaporation loss, which can ensure the stability of the actual operation。
Good protection coefficient Heat conduction fluid selection of open flash point and spontaneous combustion point indicates its protection coefficient。The open flash point is used to indicate that it is a heat carrier in a closed cycle防护Coefficient, and spontaneous ignition point can predict the fire tendency in the air when the heat conduction fluid leaks at high temperature standards。The L-Q series heat transfer fluid has a high open flash point and spontaneous combustion point, which can ensure practical operation防护系数。
Heat conduction characteristics L-Q series products not only have high heat resistance, but also have excellent heat conduction characteristics。Suitable viscosity can produce higher circulatory system efficiency;The high specific heat and thermal conductivity index of constant pressure can transfer or digest and absorb heat reasonably, and improve the rationality and operation efficiency of natural materials。
运用
When the heat transfer fluid of L-Q series products is used in the heat transfer system software that does not use N2 enclosed in the swelling tank, the oil temperature in the swelling tank should be maintained less than 60℃..Large oil temperature need not exceed 180℃。
Closed test heating system software L-Q series product heat transfer fluid is used in N2 closed heat transfer system software, because of blocking gas, so that it has a longer service life。
.The large application temperature refers to the temperature matching that the mildew rate of a product measured by the heat resistance experiment does not exceed 10%, that is, the main liquid measured by the electric heater inlet and outlet.Large mean temperature。In specific applications, the average temperature of the main liquid measured at the inlet and outlet of the electric heater should be higher.Large application temperature.少低20℃。Identified as L-QB heat transfer fluid.Large application temperature of 300℃,L-QC heat transfer fluid.Large application temperature of 320℃,L-QD heat conduction fluid.The maximum application temperature is 350℃。
Scope of application
Industrial production industry: The use of industrial production and equipment rubber and plastic products industrial production: pressing, injection molding, extrusion molding, vulcanized rubber, artificial leather production and processing, plastic film production and processing。
Bio-chemical industry: pharmaceutical industry, chemical fertilizer intermediates, rubber antioxidants, surface activators, spices, etc。
Oil chemical plant: fatty acid steam distillation, oil dissolution, steam distillation, concentration, nitration reaction。
Printing and dyeing auxiliaries: polycondensation, melting textile, thermosetting, chemical fiber carding。
Paper industry: hot melt machine, wave plate processing equipment, dryer equipment。
Wood processing: sandwich panel suppression, dryer equipment。
Household appliances production and processing: cable and cable manufacturing。
Energy industry: waste direct expansion, solar energy utilization, geothermal heating for nuclear reactors。
Food industry: grain drying, food baking。
Air conditioning industrial production: home heating plant and。
Petrochemical plant: aggregation, dissolution, steam distillation, concentration, volatilization, melting equipment, etc。
Building materials industry: leaching and melting, heat insulation, paper gypsum board air drying。
Printing and dyeing industry production: hot melt color, heat setting, air drying equipment。
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