An industrial refrigerant
A refrigerant and industrial technology, applied in the field of heat transfer medium for industrial production, can solve the problems of increasing the viscosity of the aqueous solution, limiting the scope of application, decreasing the fluidity, etc. Effect
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Embodiment 1
[0019] The weight composition of the refrigerant is as follows: 95% of propylene glycol methyl ether, 0.05% of sodium benzoate, 0.1% of sodium molybdate, 0.1% of benzotriazole, 2% of methanol and 2.75% of water. The freezing point of the brine is below -95°C, the viscosity is 73.4cP at -65°C, and it can be used at an ambient temperature of -65 to 115°C. Non-toxic, non-volatile, non-scaling, non-mildew, non-corrosive to metals, good fluidity at low temperature.
Embodiment 2
[0021] The weight composition of the refrigerant is as follows: 88% of propylene glycol butyl ether, 2.5% of sodium lactate, 0.1% of polyaspartic acid, 0.5% of benzotriazole and 8.9% of ethanol. The brine has a boiling point of 170°C and a freezing point of -100°C, and can be used at an ambient temperature of -50 to 165°C. Can be widely used in food, chemical, pharmaceutical and other fields.
Embodiment 3
[0023] The weight composition of the brine is: 50% of propylene glycol methyl ether, 42% of propylene glycol butyl ether, 0.5% of sodium phytate, 1% of sodium lactate, 0.2% of polyepoxysuccinic acid, 0.3% of benzotriazole, and 6% of methanol. The brine has a freezing point of -80°C and can be used at a temperature of -60 to 150°C. It can be used in beer, food, pharmaceutical, silicone and petrochemical industries.
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