Urgent!! The icing problem in the ammonia vaporization tower
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The ammonia vaporization tower at our coking plant freezes severely in winter. The temperature here drops to minus 20 degrees at night; steam is constantly being released from the top of the tower, and there’s a lot of ice there, which needs to be removed every day. Cleaning that ice at such high altitudes is also very dangerous. Are there any better improvement measures?
We’ve never had this phenomenon here; the key is that it doesn’t freeze or snow here... There’s no need to worry about this issue! :) You can try the pure calcium-based deicer
During your studies, how is the treatment of coking wastewater done there?
You can make some modifications to the top of the tower. In the past, our winter temperatures ranged from minus 20 to minus 30 degrees, so our design was intended for use indoors.
Top of the tower? The temperature at the top of the ammonia vaporization tower should be 110 degrees. Isn’t the ammonia gas produced by vaporization sent to the saturator?
“The tower top was constantly releasing steam, and there was a lot of ice at the top of the tower?” Why is there steam? Where does it come from?
1. First, the ammonia-stripping off-gas must not be released directly (it is presumed that the ice formation you experienced was caused by the condensation of this released gas). Instead, it should be condensed into concentrated ammonia water for other purposes, such as desulfurization； Or directly introduce ammonia vapor into the saturator ； This is the fundamental measure for governance. 2. In addition, the top of the ammonia vaporization tower should be equipped with safety facilities such as fences and ladders; these facilities are necessary to ensure people’s safety in case they need to go to the top of the tower for any reason.
My friend, what’s on top of the tower is steam; it should be ammonia vapor. The correct process is for it to pass through a partial condenser and then into a saturator
Reply to 7# Desert Poplar: The top of the ammonia condenser at the tower is open, and steam is generated when the circulating water is heated
Reply to 10# tom791225: It’s because the temperature control of the reducer is set too high, and there isn’t enough water flow; otherwise, steam would be emitted, but not such an excessive amount of water vapor. Otherwise, it would be too unsafe to remove ice from such high up