Functions Of Two-Stage Gas Compressors

A higher level of dependability and efficiency is achieved using two-stage gas compressor systems.

FREMONT, CA: When a single-stage gas compressor cannot achieve the discharge pressure required for an application, a two-stage gas compressor is needed. While a two-stage gas compressor is more expensive, more complicated to operate, and requires additional equipment, there is simply no other way to get a higher discharge pressure than with a single-stage gas compressor. Additionally, two-stage gas compressor systems are an excellent alternative for handling sour, acidic, or heavy hydrocarbon gas streams that provide difficulties for other types of systems.

The following information will teach businesses everything they need to know about two-stage compressors.

Ro-Flo two-stage gas compressors combine a high pressure and a low-pressure model on a single drive to provide the best solution when a high discharge pressure is required. A Ro-Flo low-pressure gas compressor is linked to a Ro-Flo high-pressure gas compressor; the two models are flow-matched to permit two compression stages with a single drive. Both phases function at the same rate.

While this is the most common configuration, there are alternatives. One contains separate drives and Ro-Flo types that have been chosen expressly to meet varying flow requirements at different speeds. An intercooler and knockout vessel are frequently required between stages to remove compression heat and free liquids from the gas stream.

Two-stage gas compressor systems provide significantly increased range and increased reliability and efficiency. A gas compressor system comprised of two Ro-Flo compressors can generate gas discharge pressures of up to 200 psi (13.6 barg). Ro-Flo two-stage gas compressor systems may operate at vacuum levels as low as 0.7 psia (5 kPa absolute).

How to Select the Right Gas Compressor for the Job

When businesses engage with Ro-Flo, our team simplifies the process of selecting a gas compressor.

• The compressor system's intended use
• The sort of gas that will be handled
• The necessary pressures
• The ratio of compression (the higher the ratio, the more likely a two-stage gas compressor is needed)
• The location of the system's installation
• Temperatures at the suction and discharge ports
• The required capacity

With these variables in hand, we can evaluate if a two-stage gas compressor is required and develop the precise requirements for the system. Single-stage and two-stage gas compressors may be viable solutions at specific compression ratios. When choosing between the two, it's critical to consider that a two-stage gas compressor system is significantly more complex, may require additional operator training, and is more challenging to maintain and repair. Additionally, the initial cost is more significant. A two-stage compressor does provide a cooler discharge temperature, and if both single-stage and two-stage gas compressors are available, the two-stage compressor is more efficient.