Chlorine processing centrifugal compressors

The centrifugal compressor, with its high rotational speed, is unique in requiring a speed increaser between the drive and the compressor. The chlorine process places no special demands on the gear increaser used here. Within the limits of good practice, any rugged high-quality unit will serve. 

Liquid-Ring Compressors. At this point in the process, the chlorine is dry and can be handled in steel piping and equipment without excessive corrosion, but the pressure is too low for liquefaction or use in most other processes. In this case, compression is necessary, and Section 9.1.6 describes the process and the types of equipment used. The sections that follow here discuss liquid-ring and centrifugal compressors separately. 

Finally, there are many opportunities in the typical process for air or nitrogen to enter the gas stream. These have been described elsewhere [1], and here we mention by way of example the gas (nitrogen or dry air) used to pad the labyrinth seals on the typical centrifugal chlorine compressor. 

Types of Compressor. Many different types of compression machinery are used in chlorine service. Low-pressirre and vacuitm applications are considered elsewhere (Section 9.1.12). For compression of the main process flow, we consider centrifugal, reciprocating, and rotary liquid-ring comfHessors. 

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