The lighter the insulation material in the RTO regenerative oxidation furnace is the better. Because the furnace body of the RTO regenerative oxidation furnace is made of steel plates, using low-density insulation materials can reduce load-bearing, and the low-density RTO refractory insulation furnace lining has small heat storage. It is more conducive to heat accumulation in the grid-type regenerative bricks, which are used to heat VOC gas to reach the thermal oxidation temperature and promote combustion, thereby reducing the amount of combustion-supporting natural gas.
The currently widely used RTO furnace insulation material is Energy-saving lightweight insulation ceramic fiber products- ceramic fiber module + ceramic fiber blanket. The two materials are used in combination. The ceramic fiber module is used as the main body of the RTO regenerative oxidation furnace insulation lining, and the ceramic fiber blanket Used as a compensation blanket between the backing layer and the module.
Advantages of ceramic fiber products lining insulation structure of RTO regenerative oxidation furnace
1. The RTO furnace has good thermal sensitivity: the ceramic fiber furnace lining has low heat storage.
2. Save space: The ceramic fiber furnace lining has a thinner insulation thickness than other furnace linings, which increases the space of the regenerator and is more conducive to VOC heating. The pipe insulation layer (pipe insulation layer) can be reasonably selected according to the space requirements. The lightweight insulation material of the insulation jacket interlayer can be reasonably selected according to the space requirements.
3. Low thermal conductivity: The thermal conductivity of the ceramic fiber products furnace lining is lower than 0.03w/(m.k), and the heat insulation effect is good, which better protects the heat in the furnace from being lost, thereby reducing the start-up of gas heating and reducing operating costs.
4. Good thermal shock resistance: The ceramic fiber furnace lining has good thermal shock resistance and can cope with the alternation of hot and cold caused by temperature changes caused by the periodic replacement of the air inlet of the RTO furnace, ensuring that the furnace lining is intact. Due to the excellent resilience of the lightweight and high-temperature-resistant ceramic fiber lining of the RTO furnace, an airtight overall refractory layer is immediately formed after the pre-compressed refractory module is installed and the packing tape is removed, without the need to reserve expansion joints.
5. Strong chemical stability: The raw materials for ceramic fiber production are inorganic non-metallic materials, which have extremely strong chemical stability and are not easily affected by harsh atmospheres and oil pollution. The surface temperature of the furnace body is low and the service life is long.
