Selection of a concentration detector for concentrating dilute sulfuric acid to 75% sulfuric acid concentration
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This post was last edited by Wang Genrong on 2017-4-25 09:14. We are designing a dilute sulfuric acid concentration unit, which requires control valves as well as monitoring and control instruments. The specific parameters are as follows: Medium: 20%–75% sulfuric acid; Temperature: Room temperature–125°C; Pressure: Atmospheric pressure–-0.095 MPa. It is required to measure temperature, pressure, liquid level, sulfuric acid concentration, and sulfuric acid density in real time, with the measurement values to be displayed on-site as well as transmitted via a 4–20 mA signal. See if there are any instruments, meters, control valves, etc. that meet the requirements. Please actively recommend manufacturers and models of instruments and meters that meet the requirements. Thank you!
The measurement of sulfuric acid can be carried out as long as care is taken regarding crystallization and corrosion, which are common issues.
This post was last edited by zxg.wylton on 2017-4-24 08:27. Temperature-rated PTFE sleeves, pressure sensors of type HC276 with PTFE diaphragms, level radars equipped with PTFE isolation windows – all control valves are also lined with PTFE: domestic products are sufficient for these applications. Density four-fluoride lined mass flow meter, Rossmount is the best choice. For the concentration, please contact EMC Corporation in the United States. For pressure transmission, Yokogawa or Rosemount are the best choices, with diaphragm HC276. However, the overall design and selection need to be refined; otherwise, some of the choices might not work well. How do you make your jars?
HC can only be used at around 100 degrees Celsius; tantalum might be required, but the temperature must not exceed 150 degrees Celsius.
Yes, I estimate that there will be no direct contact with the medium due to pressure, and the temperature is likely to be at room temperature as well.
A routine and simple question :lol
The GDLD606 high-frequency radar, in its corrosion-resistant version, can be used to measure sulfuric acid levels
It’s not necessarily straightforward either; for example, how can all gauges with linings operate reliably under negative pressure? If there is a large amount of steam in the tank, measuring the liquid level using radar may also be unreliable. We have used valves with PTFE linings from 4 different brands, including those designed for specific applications; almost all of them did not function properly. Some of them broke down after just half an hour of operation, but after making adjustments to them, they were able to operate for over 10 years, with a minimum of 4 years of service life.
ZXG has profound expertise and conducts in-depth analyses. Speaking of fluorinated lining control valves, I was just wondering – the only brand that I find to be satisfactory at the moment is RICHTER. Do you have any other good recommendations? Thank you!
I’m not sure whether the poster intends to use domestic or imported products. If imported products are chosen, I can provide models from Romon and E+H. If needed, please let me know your QQ or email address and I’ll send you the models and instructions