Auxiliary combustion chamber lining issue
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During the maintenance of the catalytic unit, it was found that the refractory bricks in the auxiliary combustion chamber had fallen off, likely due to excessively high temperatures at the beginning of operation. How should this situation be handled? Can insulation lining used in the two devices be applied?
Applying insulation lining inside the two vessels is not allowed; repair must be carried out using the fire-resistant bricks and fire-resistant mortar specified in the original design.
It’s still necessary to ensure that the auxiliary combustion chamber is used – that’s the right approach: lol
Our equipment is the same; all modern high-efficiency auxiliary combustion chambers work in this way. The problem lies in the fact that the air flow within the furnace isn’t properly regulated, which results in heat not being carried away or in heat being directed to the rear and upper parts of the furnace. If the furnace lining has peeled off over a large area, it must be redone entirely; the anchor bolts and mesh panels need to be rewelded in accordance with the requirements of the furnace’s manufacturer. It is likely caused by the excessive rapid heating of the furnace lining during startup, with the high temperatures leading to severe thermal erosion of the furnace lining.
Is your high-efficiency auxiliary combustion chamber a low-pressure drop auxiliary combustion chamber, a product from Luoyang Ruichang?
This post was last edited by longziyun on 2018-9-20 09:46. The auxiliary combustion chamber, commonly known as a small furnace, is a furnace in its own right; although it is connected to the main furnace, it is not part of the reactor or regenerator. It is a burner designed to withstand temperatures as high as 1000°C from the flames. Its furnace walls, bricks, and lining materials are not the same thing – the linings of those other components are designed to be wear-resistant, while this component’s primary requirement is heat resistance.
I’m not very familiar with catalysis – is there a possibility of secondary combustion?
This post was last edited by Green Lotus on 2018-9-20 09:32: “Up to 1500°C high temperature”? It’s not that high; once it exceeds 1000, the gauge shows an overload and stops displaying the value.