Conduction oil and preparing method thereof

Abstract

The invention belongs to the field of heat conduction oil, and relates to a heat conduction oil and a preparation method thereof, comprising: base oil, antioxidant, antirust agent, dispersant, coke inhibitor, surfactant, detergent, metal passivator; and The above formulation and base oil are mixed in portions at 65° C. and stirred for 3 hours to obtain heat transfer oil. In the present invention, by compounding antioxidant, detergent, dispersant, antirust agent, scorch inhibitor, metal deactivator, surfactant and base oil, the heat transfer oil with thermal oxidation stability has a long service life The invention has the advantages of prolongation and no coking, can reduce the generation and discharge of low boiling substances, is safe and environmentally friendly, has wide application, reasonable raw material compatibility, simple preparation method, and easy-to-obtain raw materials.

Description

technical field [0001] The invention belongs to the field of heat-conducting oil, and relates to a heat-conducting oil and a preparation method thereof. Background technique [0002] With the development of modern industry, energy is becoming more and more tense, and energy saving and environmental protection are getting more and more attention from all over the world. As an excellent heat transfer medium, heat transfer oil has high temperature and low pressure heat transfer performance, high thermal efficiency, uniform heat transfer, temperature It has the advantages of accurate control, convenient transportation and low operating cost. It has been found to be the most widely used and the largest amount of heat carrier. [0003] The heat transfer oil generally uses appropriate fractions of alkanes, cycloalkanes and aromatics, and the dissociation energy of various hydrocarbons is generally 330-420kj / g molecule. It can be cracked at a high temperature above 1000 °C. But i...

AI Technical Summary

Problems solved by technology

[0007] Heat transfer oil is mostly used under continuous high temperature conditions, and its operating temperature is generally between 200-400 ° C. If heat transfer oil is operated in a high temperature environment for a long time, thermal cracking, polycondensation and oxidation reactions will occur. As a result of thermal cracking reactions, low boiling point substances will be produced. , leading to lower flash point and lower safety

Low boiling point substances will also undergo polymerization and condensation to form high molecular substances, colloids, etc., resulting in increased viscosity and carbon residue, causing coking, which adheres to the tube wall of the heating furnace, reducing heat transfer efficiency and increasing energy consumption

The oxidation reaction produces organic acid, which increases the acid value of the heat transfer oil. Deep oxidation also produces insoluble acid mud, which increases the viscosity of the heat transfer oil, which eventually shortens the service life of the heat transfer oil and even damages the equipment. Therefore, the heating rate and Service life is especially important

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