Reason for the high water spray rate in the quencher of the full cryogenic conversion system
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Full cryogenic conversion system: Reasons for the high water spray volume in the quencher. Let me explain the process first. The temperature of the incoming gas is 264 degrees; after cooling, it drops to 200 degrees. However, a large amount of water is required. Is this due to poor spraying efficiency? Should the nozzles be modified? The current nozzles consist of three tubes with several small holes that spray water onto the packing. Last edited by *aoye613 on 2009-4-20 21:12]
It is possible to determine whether the water volume is large or not by performing a heat balance calculation; all that is needed is to know the gas flow rate, composition, and water volume. It is also possible to determine whether the exhaust gas is saturated. A more direct approach is to discharge the drain directly on-site; without water, there’s no major problem.
The spraying effect will definitely be poor – it wastes water and fails to achieve the desired cooling effect. What is the diameter of the tower? We can create an inlet water distributor for you to ensure an **improved effect**, resulting in greater efficiency and lower energy consumption.
“I cannot agree with the current practice of using nozzles that have only three tubes with a few small holes. The effect of cold-jet atomization is definitely poor; the inlet temperature is only 265 degrees, and if the vaporization packing isn’t thick enough, it’s inevitable that water will be carried along. Sometimes it is not possible to tell whether the waste stream contains water; those small droplets, when carried into the catalyst bed, can also cause caking and lead to a loss of low-temperature activity.
It is best to use nozzles with good atomization performance; those that are less prone to clogging are ideal, and it’s best if there are multiple nozzles delivering a uniform distribution of small spray volumes. Even at a temperature of 264°C, the spray volume should not be too high. The nozzles you mentioned can easily carry unnebulated water to the catalyst layer, causing the catalyst to become pulverized, form scars, and even become deactivated due to sulfation.