Solutions to air leakage in heating furnaces
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The oxygen content at the top of the heating furnace is 2%, the oxygen content entering the air preheater is 5%, and the oxygen content in the chimney is 8%. How to detect and solve the air leakage problem of the heating furnace? It is estimated that there is air leakage in the convection section and air preheater. Is there any good detection method? What is the best way to repair air preheater tube bundle leaks?
A little insight. You have to carefully compare the changes in the composition of each section and what substances are heated in the convection section. The best detection method is to shut down the furnace.
1. Check whether the tube sheet or interface between the fresh air and flue gas in the air preheater is corroded or damaged. 2. Whether the sealing baffle of the direct exhaust chimney is sealed. 3.