Issues with the selection of level gauges for liquid sulfur storage tanks! ! !
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In the sulfur-based acid production process, 8-meter-high liquid sulfur storage tanks were originally equipped with insulated magnetic flap level gauges (wall-mounted). However, after two months of use, the magnetism of the float inside these gauges disappeared; our on-site maintenance team attributed this to high temperatures causing the loss of magnetism. I’m not sure if that’s really the case. I was wondering if other factories also use this type of level gauge. Or could you explain it? I’ve heard that low-frequency radar can be used to measure such liquid levels, but from my past experience, sulfur vapor present above tends to crystallize easily when cooled. Is it necessary to add a blowing device?
Now, the Wigerda level gauges come with a high-frequency radar level gauge, so there’s no problem in this case! It’s just too expensive
The last edit to this post was made by zxb1990 on 2016-6-25 at 21:27. I’m not sure what the operating temperatures in your facilities are; for our ordinary sulfuric acid storage tanks, I use ultrasonic level gauges
The storage tank for dilute sulfuric acid can use an external-mounted ultrasonic level gauge :)
A single-flange level transmitter can be used
It can’t be a pressure vessel at normal pressure; it seems that a single-flange design isn’t suitable. Subjectively, I think radars and the like aren’t very reliable; external measurement methods could be considered, what about double flanges? What about the buoy? Pay attention to the material. High temperatures might cause the magnetic flap to lose its magnetism, but I’ve never seen that happen……
It has nothing to do with low frequency/high frequency. Contactless detection instruments are definitely necessary, and radar is the best choice. When considering different models of radar, it is important to determine which one has the best resistance to condensation and crystallization. To resolve this problem fundamentally, it is necessary to provide heat tracing at the radar process interface to prevent crystallization from occurring as much as possible.
It’s better to choose ultrasound. Those who select radiation are also regulated. Ultrasonic waves are still powerful.
Backblowing is recommended; we used backblowing for sulfur recovery in the past
Personally, I recommend using ultrasound; if that’s not an option, dual flanges can be used instead