Should I choose an air compressor or a Roots blower?
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Now, a oxidation reaction is carried out at atmospheric pressure; however, a large amount of air is required, amounting to 50,000 Nm3/h. After accounting for the pressure drop in the system, a pressure of 5 kilograms should be sufficient. So, for equipment used to convey air, is it better to choose an air compressor or a Roots blower? Thank you!
The reaction takes place at atmospheric pressure; is 5 kilograms of pressure still required for exhaust? Rotary pumps are not recommended either at normal pressure or at 5 kilograms.
For air compressors, rotary vane single-stage models generally achieve a pressure increase of up to 1 kilogram; you can choose a centrifugal compressor instead
A pressure of 5 kilograms is required for exhaust due to the pressure drop in the system; in reality, 5 kilograms may not be necessary – 3 kilograms is sufficient. Why isn’t the Roots pump recommended? Compressors are much more expensive than blowers.
I read in the book that the outlet pressure of the blower can reach 3 kilograms. Compressors are much more expensive than blowers; from an economic perspective, blowers are definitely a better choice, right?
A gauge pressure of up to 2.5 kilograms falls within the scope of blowers; however, for rotary vane blowers, a single stage can only increase the pressure by about 1 kilogram. For imported single-stage screw blowers, a pressure range of 1.5–2.5 kilograms is achievable. The imported multi-stage centrifugal blower can achieve a pressure increase of around 2 kilograms. It won’t work unless you reduce the pressure.
Firstly, the maximum pressure of a Roots blower is 2 kilograms, and bipolar compression is required to achieve this, resulting in high energy consumption and low efficiency. From what you have at the moment, you can only choose a centrifugal compressor. When selecting equipment, one should not consider only the price; practicality, cost-effectiveness, and stability must also be taken into account. Especially for moving equipment, making the wrong choice can lead to significant problems.
The system resistance has reached 5 kilograms; an air compressor should be chosen, but the flow rate seems to be a problem
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Luo Ts said: Leaving pressure aside, I simply can’t achieve a flow rate of 50,000 Nm3/h.