In our last post, Refrigeration Systems - Quench Control (Part 1), we discussed the industrial refrigeration process, and basic recycle temperature control. In what follows, we will discuss the [...]

This will be the first of two posts discussing: 

Quench Control in hydrocarbon processing refrigeration systems.

In the hydrocarbon processing industry, refrigeration systems are widely used to [...]

In this post we will describe how we can convert a compressor manufacturer's compressor performance map to a surge line we can use to determine where, in relation to that surge line, a compressor is [...]

Proper selection of the recycle valves for a refrigeration compressor can be significantly more complicated than the selection valves for most other anti-surge applications. Refrigeration Compressors [...]

With the proliferation of dedicated digital anti-surge control systems over the last 20

Properly designed compressor controls should not only protect the compressor, they should protect the process.

Centrifugal compressors are common-place in many process plants due to their small [...]

What's Stonewall?

Stonewall occurs in a centrifugal compressor when the velocity of the gas in at least one stage reaches the speed of sound (Mach 1) at the gas conditions in that part of the [...]

Incipient surge is a flow disturbance in the impeller of a centrifugal compressor that occurs at low flows. However, calling this phenomenon “surge” is a bit of a misnomer. Since the disturbance [...]

The common technique for controlling throughput of an axial compressor is to incorporate variable inlet guide vanes for the first few rows of blades. Some manufacturers can vary all the inlet guide [...]