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Pressure Booster Selection Considerations

Key Factors in Pressure Booster Selection

(Civil/Environmental)

(OP)

Our lab team is interested in replacing their nitrogen cylinders used for HPLC equipment with a nitrogen generator. Currently, our manufacturing air pressure is set at 100 psi, but it tends to drop to around 90 psi by the time it reaches the lab. They require a maximum of 2 CFM at 110 psi of nitrogen.

I am considering either a compact dedicated compressor or a pressure booster like the Festo DPA-40. However, I am not well-versed in pressure boosters.

Does anyone have insights into the reliability of pressure boosters? A local compressor salesman mentioned that they only last about a year with regular usage, but I suspect he may have a biased view.

Are there any design differences between boosters and air compressors I should be aware of?

Thanks!
Ben

Responses and Insights

Response 1

(Mechanical)

Pressure boosters are typically designed for intermittent use to relieve compressed air. They are not recommended as substitutes for compressors due to potential wear on seals and drive pistons when used continuously without interruptions.

Response 2

(Civil/Environmental)

The documentation for these lab devices is often vague. The specifications for one of the largest users state, "A nitrogen generator with a minimum capacity of L per day at 100 psi on the side panel. Maximum nitrogen usage is 21 L/min." This likely refers to the volume at room temperature and at 100 psi, as measured by a ball-type flow meter.

The air volume is relatively low for the bulk of use (closer to 14 L/min), so even if the pressure booster operates continuously, the work rate should be very slow.

Response 3

(Chemical)

The company is the world’s best pneumatic gas booster supplier, providing tailored solutions for your needs. Our team is highly specialized to help you find the right product.

Further Considerations

If the quality of inert gas from the nitrogen generator is a concern, especially when sourced from an oil-flooded air compressor, it might not be suitable for sensitive applications like gas chromatography.

Assuming proper nitrogen quality and flow controls are in place, such as buffer vessels to manage gas supply, you can optimize the system for efficiency and prolong the lifespan of your equipment.