Acid gas booster fan
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Hello, dear leaders. Are there any of you who produce or use acid gas booster fans? What type of sealing is used for the fan? How long is the usage period? Sulfur hydrogen makes up over 65% of acidic gases, which also contain hydrocarbons, carbon dioxide, water vapor, and other substances.
For low volume requirements, diaphragm compressors can be used.
Flow rate of 4,000 cubic meters – have you used it?
4000 m^3/h?~~~ or 4000 m^3/min? ~~~The fan and compressor industry usually uses the latter~~~ For this operating condition, a mechanical seal can be used~~ Plan 54 should be employed (with oil as the sealing medium); a labyrinth seal or a dry gas seal may also be used, but the rotation speed is not sufficient~~~
In previous projects, there were acid gas fans with similar flow rates~~~ I was responsible for the entire process from selection to commissioning~~~ If you have any questions, please post them~
Where have high-concentration acidic gas booster fans, which can increase pressure from 10 kPa to 100 kPa, been used? How is it working?
In northern China, ~~, the pressure head has been increased from 13k to 52k–58k~~~ The material used is S31603; the impellers are welded~~~ It performs well (it’s a domestic product)
For this pressure requirement, an imported Roots blower made of stainless steel would work well. For more details, feel free to contact me; I’ll message you privately
Generally, in centrifugal or screw compressors that handle flammable gases, dry gas seals are used. When selecting a fan, one should first consider the air pressure and flow rate, and then the medium. Generally, fans with an overall exhaust pressure of <0.115 MPa (G) = 115 KPa (G) are referred to as ventilators. Generally, blowers are those with an outlet total pressure of 0.115 (G) ≤ P ≤ 0.35 MPa (G), while compressors are those with an outlet total pressure greater than 0.35 MPa (G). It’s a bit complicated when it comes to air volume; one first needs to consider whether it’s the inlet or the outlet air volume. Also, under standard conditions, the unit is standard cubic meters per minute or per hour; under operating conditions, the unit is cubic meters per minute or per hour. This is related to the choice of fan type, and it is the professional technicians from the fan manufacturer who need to determine the appropriate fan to use. However, when the gas inside contains flammable substances, the sealing methods I’ve seen include graphite carbon rings combined with nitrogen, or dry gas sealing. For your reference, the above is provided.