Measurement issues related to liquid level in cold hydrogenation
Thread Content
I would like the experts to explain how the liquid levels in the rapid cooling tower and the residual liquid stripping tower are measured during cryogenic hydrogenation. What are the key considerations when using the differential pressure backwashing method for measurement? (In our differential pressure measurement backflushing method, circulating hydrogen is used for backflushing; there is chlorosilane liquid inside the pipeline, and the pressure difference between the backflushing pressure and the pressure inside the tank is 1.5–2.0 bar. The backflushing pipes tend to get clogged, which leads to inaccurate measurements and frequent repairs.)
The original poster has identified the root of the problem; if changes are to be made, they should be made at the source. There’s no need to use recycled hydrogen – otherwise, any repairs done will be pointless, and the same problems will persist.
Using an ultrasonic level gauge for measurement, everything is fine; the aforementioned problems will not occur
The level gauge originally installed on the tower was slightly modified to install a radar level gauge. Previous nuclear level gauges were never accurate
I think level measurement is still in the exploratory stage; some people mention ultrasound, which might work, but it ultimately depends on the results!
During the preliminary discussions on the cold hydrogenation process, when the topic of level gauge issues came up, others mentioned using radiation measurement; I haven’t used it myself, so I’m not sure about its effectiveness!