What is the best instrument for measuring liquid sulfur?
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This post was last edited by LU66 on 2010-6-15 21:28. Sulfur acid production plants all require the combustion of liquid sulfur; therefore, it is important to determine the most suitable flow meter for measuring liquid sulfur so as to ensure stable operation over long periods of time. Different plants use different types of meters. Please share your experiences – which manufacturer’s meters do you use, and what is their performance and reliability like? What are the lessons learned from using it? Be more detailed! Liquid sulfur parameters: density 1.8 g/cm3, pressure 1.8 MPa, temperature 140°C, viscosity 7.75–9.4 cp (140–160°C) ； Insulated with a steam jacket (steam pressure 0.4 MPa). This post was last edited by LU66 on 2007-12-11 23:13]
There are many metal tube float flowmeters for industrial use.
A mass flow meter will work as well, but it’s more expensive. The rotor is also a good option, but remember to add a magnetic filter.
The rotor is also a good option, but remember to add a magnetic filter. During my studies… In the past, the rotameters in our factory would often get stuck, probably because there was no filter in place.
We use three types of liquid sulfur flowmeters: mass flowmeters, rotameters, and target flowmeters, each with its own advantages and disadvantages. 1. Mass flow meter (has been in use for 5 years; difficult to repair when it breaks down, fairly accurate, expensive; mainly used for measurement in trade settlements). 2. Rotameter (has been in use for 5 years; has never broken down, average accuracy, inexpensive; used in sulfonation guns). 3. Target flow meter (has been in use for only a year; average accuracy, not expensive; used in sulfonation guns)
Regarding flow measurement for sulfonic acid, from a professional perspective, the available flow meters for this medium include mass flow meters, metal float flow meters, target flow meters, wedge flow meters, twin-rotor flow meters, etc. However, it is necessary to conduct thorough research on how to make the most of each type of meter; for example, considering the installation location and method, as well as ways to provide heat to prevent blockages due to liquefaction Many factory meters are selected correctly, but proper attention is not given to their installation or insulation, resulting in suboptimal performance. I hope everyone can exchange information on the various details: where it should be installed, what measures can be taken to prevent blockages, and how to avoid sedimentation of liquid sulfur inside the flow meter that could cause blockages. This post was last edited by LU66 on 2007-11-3 16:32 ]
The purpose of posting this is to encourage everyone to think more, communicate more, and improve together. Why aren’t people enthusiastic?
I’ve tried various types of scales, but I’ll go with a platform scale for weighing
Are you joking? Is the instantaneous flow rate of liquid sulfur measured using a scale? ? ?
Our company uses wedge flow meters. Due to negligence on the part of the maintenance staff, no jacket was installed; electric heating was used at the beginning of operation, but it is no longer needed now. Since sulfuric acid production is relatively stable, it is possible to maintain production by simply monitoring the pressure of the sulfur injection system. In my opinion, whether it is truly necessary to install flow meters is questionable.
We have 3 sets of sulfuric acid production units, each with a capacity of 300,000–400,000 tons. The sulfur injection flow meters used are all float type flow meters equipped with jackets for insulation; the installation method is similar in all cases, but the brands of these instruments differ, which results in varying performance levels. Due to the limitations of its principle, the float flow meter has the converter installed together with the measuring tube, which requires the converter to be able to withstand the conditions of the field environment as well as high temperatures. We have used products from Tokyo Keikaku, Kolon, and Yokogawa; among them, we admire those from Tokyo Keikaku the most. Although they don’t have an attractive appearance, they use needle indicators on-site (and can transmit signals in the 4-20mA range). We’ve been using them for 5 years now without any problems, while those from Kolon and Yokogawa started to malfunction after less than a year of use. Now we mostly use products from Tokyo Keikaku ； It shows that choosing the right model makes a difference in terms of performance! However, the meters produced by Tokyo Keikaku are too expensive; a DN50 model with a jacket costs over 40,000 RMB.