How to quickly determine a decline in the urine tower conversion rate
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I would like to ask the more experienced colleagues: if the conversion rate of the synthesis tower decreases while the system is operating, are there any indicators that can be used to detect this in a timely manner? (Our factory uses a full-circulation process for aqueous solutions) This post was last edited by lxq700918 on 2009-2-8 at 11:39.]
Poster: What kind of craftsmanship do you use? In the case of a CO2 stripping process, this can be reflected first in the steam consumption of the stripping tower and the temperature of the liquid exiting the tower. With all other operating conditions remaining unchanged, if the steam consumption in the stripping tower increases and the temperature of the liquid exiting the stripping tower rises, it is likely that the conversion rate in the synthesis tower has decreased. In the case of an aqueous solution process, it can be reflected first in the P4 opening degree and the amount of steam added at Stage 1. With all other operating conditions unchanged, if the opening of valve P4 increases, the steam pressure before further heating rises, or the opening of TC301 increases, it is possible that the conversion rate in the urea tower has decreased. The above suggestions are for reference only.
It can also be determined from the temperature and pressure of the synthesis tower.