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Refractorymaterialsformoltensaltfurnaces

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The molten salt boiler uses ternary or binary inorganic molten salt (a mixture of potassium nitrate, sodium nitrate, sodium nitrite, vân vân.) as the heat transfer medium uses coal, oil, or gas as the fuel for heating, and uses the molten salt circulation pump to force the liquid phase Circulation, the heat energy is delivered to the heating equipment and then returned to the special industrial boiler for reheating. The entire boiler system is mainly composed of a molten salt circulation system, a combustion chamber system, and a heating system. Molten salt working temperature ranges from 250°C to 580°C.

molten salt furnace
molten salt furnace

Molten salt furnace classification

Classification according to the circulation method of molten salt boiler

Can be divided into natural circulation molten salt furnaces and forced circulation molten salt furnaces.

According to different heat sources

Can be divided into coal-fired, oil-fired, gas-fired, electric-heated molten salt furnaces, etc.

Classification according to the structural form of molten salt boiler

It can be divided into cylindrical, square box, and tube frame molten salt furnaces.

Classification according to the overall placement form of the molten salt boiler

Can be divided into vertical molten salt furnaces and horizontal molten salt furnaces.

Refractory materials for molten salt furnaces combustion chamber

molten salt furnaces system
molten salt boiler system
  1. Material requirements for combustion holes and furnace tops
    Its long-term use temperature is 1350℃, and it needs to have good thermal shock stability, using mullite castable.
  2. Material requirements for the bottom of the combustion chamber
    The bottom uses high-aluminum wear-resistant castable.
  3. Insulation material requirements around the top of the pipe and the burner holes
    The thinnest part of the insulation layer at the top of the coil is only 250mm. It is necessary to ensure long-term use and reduce the temperature of the furnace top guard plate to below 100°C.

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