Method for adjusting water level in high-pressure washer
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When starting up the urea plant, it is necessary to calculate the amount of water to be added to the high-pressure scrubber based on the load requirements; however, this amount cannot be too large, as too much water will cause the H/C ratio to exceed the acceptable levels. As for how to control the amount of water added, I’ve seen that some large-scale plants have a small bypass line installed before the water enters the high-pressure scrubber, and by opening the valve on this bypass line, the exact amount of water needed to feed into the system can be determined. However, in our setup, there is no such auxiliary line, nor is there a flow meter. The minimum flow rate of the pump is 13 T/h; control is achieved by opening the valve of the auxiliary line. It is extremely difficult to find this balance point, and it’s also impossible to estimate the amount of water entering the system. I would like to ask fellow sailors how you manage the water level in your boats when driving.
Typically, in large fertilizer plants, a small side line is used to divert some water in order to control the amount of water entering the high-pressure system. In the situation described by the poster, it can only be estimated based on the water volume entering and leaving the low-pressure system. Close the discharge valve of the low-pressure ammonium methoxide level tank to maintain a stable water flow from the absorption system to the low-pressure system, and adjust the ammonium methoxide pump bypass to keep the level in the low-pressure ammonium methoxide level tank roughly constant. At this point, the amount of water entering the high-pressure system is equal to the amount of water added by the absorption system, making it easier to determine.
It’s the method suggested by the friend upstairs to control the addition of water (ammonia solution), based on flow rate.