Problems in the pipeline layout for urea high-pressure granulation
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What is the impact if there are right-angle bends in the pipeline leading to the upper tower when high-tower granulation is used?
In the urea project, the most important thing is to reduce resistance, which also applies to the granulation pipeline. Therefore, right angles should not be used~~~
Increasing the urine resistance in the upward pipeline makes it easy for the urine channels to become blocked; therefore, neither the design nor the construction of the urine upward pipelines should allow for right-angle turns.
Large-radius elbows can be used, and the slope must be taken into account to prevent blockages.
1. Try to minimize the use of elbows in pipeline layout; right-angle elbows are acceptable, but they should not be used frequently. 2. The pipes must have a slope during construction, with as few horizontal sections as possible.
In pipeline layout diagrams, straight bends should be avoided as much as possible; instead, elbows with large radii should be used. Horizontal pipes should be avoided, and these issues can be resolved by using upward slopes, which helps to prevent pipe blockages when the system is shut down.
Such urine pipelines should avoid right-angle bends and large slopes as much as possible; where this is unavoidable, the slope should be made as steep as feasible
The effects are as follows: it increases the shaft power of the pump, and the urine volume in the upper tower increases by about one degree accordingly. The most worrying thing is that it’s possible not to empty everything completely at the right-angle corner where parking and dumping occur; steam flow is hindered there, and urine crystals can form in such corners.