What are the precautions for the use of heat transfer fluid?

Heat transfer oil is widely used as a heat transfer medium for industrial oil, and the following will take you to understand the protection matters in the use process of heat transfer oil.

1. Prevent water and other impurities from being mixed in the heat carrier with the heating of the heat carrier, the water dissolved in it rapidly vaporizes, and the pressure in the heat pipe rises sharply to an uncontrollable degree, causing accidents. Therefore, the heat transfer oil should be slowly heated before being put into use to remove water and other light main impurities in the heat transfer oil.

2. Avoid the oxidation of heat transfer oil Because the heat transfer oil is prone to oxidation reaction when running at high temperature in the heat carrier, resulting in the deterioration and deterioration of the heat transfer oil, the high-temperature expansion tank is usually protected by nitrogen filling to ensure the closure of the heat carrier system, avoid contact between the heat transfer oil and the air, and prolong the service life of the heat transfer oil.

3. Regularly test the indicators of heat transfer oilRegularly measure and analyze the physical and chemical indicators such as residual carbon, acid value, viscosity, flash point, melting point and other physical and chemical indicators of the heat carrier, timely grasp the quality changes, and analyze the reasons for the changes. When the acid number is exceeded, the viscosity changes by 15%, the flash point changes by 20%, and the residual carbon (mass fraction) is reached, it proves that the properties of the heat transfer fluid have changed. New heat carriers are appropriately replenished on a regular basis to keep the amount of carbon residue in the system basically stable.

Fourth, to avoid the coking of the heat transfer oil in the operating temperature exceeds the high use temperature, there will be coking in the oil guide pipe wall, with the thickening of the coking layer, the high temperature of the oil guide pipe wall and promote the adhesion coking, the thickening of the pipe wall temperature is further improved, with the continuous thickening of the pipe wall heat transfer performance deteriorates, at any time may occur ** accident. Therefore, the temperature of the heat transfer oil at the outlet of the heat carrier should not exceed the high use temperature, and the high film temperature of the heat carrier should be less than the allowable oil film temperature.

5. Regularly check the leakage point to strengthen on-site monitoring, ensure that the heat carrier system is intact and leaky, regularly check the corrosion and leakage of the equipment, and repair the leakage in time. Therefore, the heat carrier system should be reasonably designed, the wall thickness and compressive strength of the equipment should be regularly tested during use, and pressure gauges, safety valves and venting pipes should be installed on the equipment and pipelines.

1.According to the grade of heat transfer oil and the requirements of heat use process, correctly select various grades of energy-saving heat transfer oil, and strictly abide by the provisions of the Ministry of Chemical Industry's "Safety Technical Regulations for Heat Carrier Heating Furnace", and use heat transfer oil correctly.

2.In use, it should be carefully inspected, strictly waterproof, acid, alkali and low boiling point leakage into the use system, and install a filter device to prevent mechanical debris from entering and ensure the purity of the oil.

3.Energy-saving heat transfer oil is suitable for coal-fired, gas-fired and oil-fired heating furnaces as heat carriers, and when heating equipment such as electric heating reactors are used, they should have expansion tanks and storage tanks and other safety components and supporting facilities such as temperature control instruments to ensure safe operation.

4.When replacing the old heating equipment with new heat transfer oil, the inner wall debris must be eliminated, so as not to affect the heat transfer efficiency and service life of the heat transfer oil.

5.Heat transfer oil put into use, at the beginning of the operation of the first start of the circulating oil pump after running for half an hour, and then ignition to heat up, in the first use should be slowly warmed up per hour 20, when the temperature rises to about 130, to keep warm for a period of time, when the temperature rises to 180 -200 and then keep warm for a period of time before it can be put into normal use.

6.After half a year of use, the high-temperature heat transfer oil should be analyzed once. If the heat transfer effect is found to be poor or abnormal is found after long-term use, it should be decided according to the results of oil analysis (the main control items, the residual carbon is not greater, the acid value is not greater than, and the flash point changes.

Heat transfer fluid. It is the former name of "heat carrier oil" in GB T 4016-1983 "Terminology of Petroleum Products", and the English name is Heat Transfer Oil, which is a special oil with good thermal stability for indirect heat transfer.

Due to its ability to heat evenly, the temperature control is accurate, and it can be used at low vapor pressure.

It has the characteristics of high temperature, good heat transfer effect, energy saving, convenient transportation and operation, etc., and has been widely used in various occasions in recent years, and its use and dosage are increasing.

Characteristics of heat transfer fluids:

Heat transfer oil has the properties of thermal cracking resistance and chemical oxidation, good heat transfer efficiency, fast heat dissipation, and good thermal stability. As a heat transfer medium for industrial oil, heat transfer oil has the following characteristics: under almost atmospheric pressure conditions, it can obtain a very high operating temperature.

That is, it can greatly reduce the operating pressure and safety requirements of the high-temperature heating system, and improve the reliability of the system and equipment; It can meet the process requirements of heating and cooling at different temperatures in a wider temperature range, or use the same heat transfer oil in the same system to achieve high-temperature heating and arguing low-temperature cooling process requirements at the same time.

The above content refers to Encyclopedia - Heat Transfer Oil.

Thermal oil is a high-temperature lubricating chain oil, usually made from mineral oil or synthetic oil. Its main role is to transfer heat at high temperatures, for example in industrial heating processes.

You can understand the hot oil of the guide limb with medium energy temperature control, and the quality is guaranteed!

Oleochemical industry: fatty acid distillation, oil decomposition, distillation, concentration, nitrification. Chemical Fiber Industry:

Fine chemicals: synthesis of pharmaceuticals, pesticide intermediates, antioxidants, surfactants, spices, etc. <

1. Oleochemical industry: fatty acid distillation, oil decomposition, distillation, concentration, nitrification.

3. Gongsong Fu Hunger Industry: Application Industry and Equipment Rubber and Plastic Industry, Hot Pressing, Calendering, Extrusion, Vulcanization, Artificial Leather Processing, Film Processing.

4. Fine chemicals: medicine, pesticides, antioxidants, surfactants, spices, etc.

5. Electrical processing: wire and cable manufacturing.

6. Energy industry: waste heat, solar energy utilization, reactor heating.

7. Food industry: grain drying, food baking.

8. Air conditioning industry: household heating chemical industry.

9. Paper industry: hot melt machine, corrugated plate processing machine, dryer.

10. Wood processing: composite panel pressing, dryer.

1.In the allowable temperature range, the thermal stability is good, the coking is less, and the service life is long.

2.Within the allowable temperature range, the thermal conductivity, fluidity and pumpability performance are good.

3.Low toxicity, tasteless, does not corrode equipment, and has little impact on the environment.

4.The freezing point is lower, the boiling point is higher, and the content of low-boiling point components is less. Within the allowable temperature range, the vapor pressure is not high, and the evaporation loss is small.

5.When the temperature is higher than 70, it will be strongly oxidized in contact with the air, and its heated working system needs to be sealed, and only allow it to contact with the air at a temperature below 70.

6.After heating, the volume expands significantly, and the expansion rate is much greater than that of water. The temperature rise is 100, and the volume expansion rate can reach 8% 10%.

7.Cracking or condensation occurs when overheated, and coking or carbon deposits occur in vessels and pipes.

8.When mixed with water or low-boiling components, the vapor pressure increases significantly when heated.

9.The flash point, ignition point and spontaneous ignition point are all high, and it will not catch fire and burn at the allowable temperature and in a closed state.

10.According to the area where the user lives and the working environment of the equipment, it is recommended to choose a suitable heat transfer oil with low temperature performance.

It is widely used in petroleum, chemical industry, oil and fat, food, textile printing and dyeing, medicine, synthetic fiber, papermaking, plastics, rubber, wood, building materials, metallurgy, mechanical processing and casting, air conditioning and electrical equipment, fat and paint, wrestling, automobile manufacturing, carbon industry. It is also used in road construction engineering, national defense scientific research, and shipping industry.

In addition to the above-mentioned industries, it is also used in warm water sounders, hot water generators, steam generators, radiators, as well as heat for soap and detergent industry, tar processing industry, and laundry industry.

While we need to understand the purpose of heat transfer fluid, the first thing we need to do is understand the function of heat transfer fluid. It has the function of chemical oxidation, its heat transfer efficiency is very good, its heat dissipation effect is also fast, and its stability is also very fast. Heat transfer oilIt is used as an industrial oil for heat transfer, and it has the following characteristics:

In the case of atmospheric pressure, it can obtain very high operating temperatures. It can not only reduce the high temperature very quickly, but also ensure its safety, improve the reliability of the entire operating system and the reliability of the entire device. The purpose of heat transfer oil is to meet the needs of heating or cooling at different temperatures in a wide temperature range, or the same heat transfer oil can be used in the same working system to meet the needs of heating at high temperature and cooling at low temperature at the same time.

Heat transfer oil can not only reduce the complexity of the operating system and system operation, but also save the operation of a piece of equipment, improve the operation efficiency of the whole system, and reduce the workload for the whole equipment. This not only reduces the investment in the heating system, but also saves some operating costs. Although the use of heat transfer oil is good, it will also have disadvantages, that is, if there is any system leakage in the event of an accident, the heat transfer oil will become a fuse, and fire may occur.

However, if there is no leakage, and the heat transfer oil is working under pressure, then its working safety index will be very high, and there will generally be no conflict. Compared with other types of heat transfer, if the temperature is above 400 degrees Celsius during operation, the heat transfer medium of heat transfer oil will be better than others, and the price is reasonable, which has an absolute advantage. But it also has disadvantages in some aspects, especially in that complex operating situation.

The range of uses of heat transfer oil: industrial, fine chemical, and paper industry. It is also necessary to pay attention to the safety of heat transfer oil, first, to ensure the operation of the whole condition, to use it within a certain temperature, otherwise it may deteriorate, but also to avoid it contact with the air, in order to prolong its service life.

Second, it is necessary to avoid the temperature of Chinese when it is running.

The purpose of heat transfer oil is to be used in the work of industrial enterprises, which plays an important role, so that the whole operation changes with it. The completion of the product has accelerated the pace, and has not saved a lot of money for industrial enterprises, so that the entire industrial enterprises have obtained corresponding profits, and has made great contributions to industrial enterprises.

Some of the hazards and measures that occur in the process of leading to the use of oil should be protected during transportation, and special materials should be used for one year.