What is the reason for the high steam consumption after replacing the urea two-stage decomposition tower with structured packing?
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The urea two-stage decomposition tower originally used Pall ring packing; after switching to structured packing, the vapor-liquid separation performance improved, but steam consumption increased. Could those with more experience please explain why this is the case? This post was last edited by yunanshu on 2008-4-22 08:42.]
How did you find out that the steam consumption is high? Could you explain it in more detail?
Please provide parameters such as load, tower diameter, and loading capacity, and I can help you calculate it.
Urea production: 610 tons per day; tower diameter: 800 MM; packing height: 1500 MM
What form is the original poster using?
After replacing the Pall ring packing with structured packing, the residence time of the material in the structured packing increases, allowing for more thorough decomposition; according to the law of conservation of energy, more steam is required as a result
Please explain more clearly, the author: what kind of decomposition tower is referred to in the second paragraph? Is it hydrolysis, or some other type of decomposition? Please provide more detailed information on the process parameters so that everyone can help analyze it for you
First, you need to check whether your steam is at the same temperature and pressure, and secondly, consider the increase in residence time
:Is the skirt section of the urea synthesis tower also covered with insulation material? What is the full name of the \"Standard Design from the Fourth Chemical Engineering Institute\"?
Is it just that the opening degree of the steam valve in the two-stage decomposition heater is larger? Has the overall steam consumption decreased, and has the ammonia consumption decreased as well? If that is the case, then the decomposition rate of methylammonium and the total ammonia evaporation rate in the two-stage decomposition tower increase, resulting in a reduction in overall energy consumption.