Water-borne organic cold carrying/heat conduction medium and preparation method thereof

Abstract

The invention relates to a water-borne organic cold carrying / heat conduction medium and a preparation method. The water-borne organic cold carrying / heat conduction medium is prepared by the following steps of using propylene glycol, diethylene glycol, tri-ethylene glycol and deionized water as base liquids, and using succinic acid, adipic acid, tricarboxylic acid, diethanol amine, triethanolamine, tris(dimethylamino)phosphine, mercaptobenzothiazole, benzotriazole, tris(N,N-diethylamino)phosphine and polymaleic anhydride with polymerizing degree of 8000 as compound corrosion and scale inhibitors; respectively adding, heating by phases, stirring, and dissolving. The prepared water-borne organic cold carrying / heat conduction medium has the characteristics that the excellent corrosion and scale inhibition property is realized for a multi-metal system, and the electrochemical corrosion and heat corrosion are effectively prevented; the reserve alkalinity is more than 20ml, so that the medium has stable PH (potential of hydrogen) value, and the long-time effect of the medium property is guaranteed; the heat conduction coefficient is slightly better than the heat conduction coefficient of heat conduction oil, and the medium can normally work at the temperature range of -40 to 210 DEG C, can be used as a cold carrier and an anti-freezing agent at low temperature, and can also be used as a heat conduction liquid at high temperature; the property is stable at high temperature, the viscosity is low at low temperature, the corrosion and scale inhibition property is lasting, the environment-friendly effect is realized, and the heat conduction coefficient is good.

Description

technical field [0001] The invention relates to the field of organic materials, in particular to an aqueous organic-mounted cold / heat conducting medium. Background technique [0002] At present, the important heat transfer medium of heating oil furnaces in industrial production is heat transfer oil, and the carrier refrigerant is mostly air and water. [0003] Heat transfer oil has the characteristics of high boiling point, high flash point, accurate temperature control, high temperature under low vapor pressure, good heat transfer effect, energy saving, convenient transportation and operation, etc., and has been widely used in various indirect heat transfer fields in recent years . Although heat transfer oil has many advantages, it also has many fatal disadvantages. (1) Easy to coke. After the coking phenomenon occurs, it not only hinders the flow of heat transfer oil, reduces heat transfer efficiency and increases fuel consumption, but also causes local overheating defo...

AI Technical Summary

Problems solved by technology

After the coking phenomenon occurs, it not only hinders the flow of heat transfer oil, reduces heat transfer efficiency and increases fuel consumption, but also causes local overheating and deformation of the pipeline to cause explosion.

(2) Easy to corrode

The nitrogen sealing effect in the heat transfer oil system is not good. In the presence of oxygen, it is easy to oxidize into phytic acid and colloids to adhere to the oil pipeline. Risk of running leaks

Moreover, due to its complex composition, it is particularly difficult to add corrosion and scale inhibitors to solve its corrosion problems. At present, there is no successful case of adding corrosion inhibitors to heat transfer oil to solve its corrosion

(3) Frequent replacement

(4) The operating environment has very strict requirements on water content, and a small amount of water can bring great harm to the system operation

[0006] At present, there are imported products that can meet the above indicators, but the use temperature is limited to below 180°C, and the price is very expensive