Crystallization in a two-stage evaporation separator
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Are there any effective ways to prevent clogging in the two-stage evaporation separator and the gas pipelines? I’m begging for advice from all the experts and masters,,, urgent!
The last edit to this post was made by 1025199692 on 2015-8-29 at 21:10. In the urea production process, the temperature can be reduced appropriately, or the equipment can be scaled up and the gas phase pipe raised.
Periodic high-flow flushing or continuous low-flow flushing
Was steam used for rinsing? If so, what was the effect?
Is the vapor pipeline for the two-stage evaporation on the side or at the top? Generally, such issues do not occur at the top. If the structure of the equipment cannot be changed, then check whether there are any damages to the two-stage steam ejectors. During regular cleaning, the ammonia solution used for cleaning can be replaced with medium-pressure cleaning water to enhance the cleaning effect.
Our company’s two-stage separators and gas pipes also tend to crystallize; it is necessary to initiate a circulation process for flushing every 3–5 days. Later, by enhancing the insulation of the gas pipes as well as improving the flushing procedures, the situation improved slightly
Rinsing with condensate at regular intervals will yield better results.
No, you should try to perform the rinsing yourself; start by rinsing for one minute, and if the temperature doesn’t drop significantly, you can increase the rinsing time.