Material and manufacturer recommendations for domestic Roots compressors used in MVR
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Our material is a high-boiling-point acid, and there may be a small amount of entrainment in the vapor. What is a suitable material for the liquid-contacting parts of the compressor? Also, our evaporation rate is 1t/hr; which compressor brand in China is the best? How high will the temperature rise be?
Do you need a complete system solution? If so, the owner can send the parameters to my email at 3225774384@qq.com
Our operating conditions are quite special – there is no steam heat source； The medium is highly corrosive – the cost of large-area heat exchangers is simply unaffordable. Therefore, I’m looking for alternative solutions; drawing on the energy-saving principles of MVR, I want to use steam compression along with indirect heat exchange to recover heat and reduce its consumption.
I work in chemical process design; if you provide me with the parameters, I can help you take a look. QQ: 691951325
For an evaporation rate of 1 t/h, it is not recommended to use MVR as the energy-saving effect is not significant
I agree with what was said above: the energy savings are not significant when the system is of small size. But as the original poster mentioned, he doesn’t have steam available, so he can only use MVR along with a steam generator
Thank you to all colleagues who have responded so enthusiastically :handshake
Hello, owner. Given the lack of steam, you can opt for a MVR evaporator + steam generator setup. Relatively higher investment, but more energy-efficient. Another option is to use a steam boiler in combination with a conventional evaporator. For more details, add me on QQ 409372256
Hello, owner. Given the lack of steam, you can opt for a MVR evaporator + steam generator setup. Relatively higher investment, but more energy-efficient. Another option is to use a steam boiler in combination with a conventional evaporator. For more details, add me on QQ 409372256
With such a small quantity and high acidity, it is recommended to use a graphite heat exchanger along with a steam generator, which will definitely save on investment
It depends on what the corrosive medium is. In any case, during previous discussions with the manufacturer, impellers made of 316L, 2205, and titanium alloys were available (of course, they were single-screw types). Rotary vane pumps are likely the best option as well. Additionally, the poster mentioned that there is no steam involved – is it used to evaporate highly boiling acidic wastewater, or something else? If steam itself is not suitable for compression or cannot be easily turned into saturated vapor, then it’s probably better not to use an MVR