High outlet temperature of the waste heat boiler in the sulfur plant
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This post was last edited by adsl121 on 2009-12-15 09:22. What are the reasons why the outlet temperature of the waste heat boiler is much higher than the designed value? What is the impact?
This post was last edited by adsl121 on 2009-12-15 09:23. Scaling on the tubes of the waste heat boiler reduces its heat transfer capacity. Stop acid cleaning.
This post was last edited by adsl121 on 2009-12-15 09:24. The possible reasons are as follows: 1. The amount of acidic gas is too high, exceeding the designed capacity. 2. The pressure control of the steam drum in the waste heat boiler is too high. 3. Excessive air supply results in too high a furnace temperature. 4. The residual heat extraction effect of the pot is poor.
This post was last edited by adsl121 on 2009-12-15 09:23. Agree with the comment above! The drum pressure can be appropriately reduced!
The analysis on the 3rd floor is excellent; you can look into the reasons from several aspects.
It is possible to determine whether the waste heat boiler is scaled by examining the steam generation rate of the drum. If, with all other conditions remaining the same, the steam generation volume differs significantly from normal levels, scaling may occur.
The inner side of the steam pipe wall does not suffer from scaling, so there are no significant changes in the amount of steam. However, ammonia salts and other impurities may accumulate on the outer wall, affecting the heat exchange efficiency and leading to excessively high temperatures downstream of the sulfur production waste heat boiler. Since the pipes downstream of this boiler are typically made of carbon steel with a heat resistance limit of 380 degrees, temperatures exceeding this limit can cause carbonization in the pipes.