Compressor problems

Here are checklists for troubleshooting compressor problems in reciprocating compressors and centrifugal compressors. 

Figure 12-70A illustrates the basic concepts of using the Mollier diagram to solve centrifugal compressor problems. The steps involved using this method are as follows (adapted from Elliott Co. Reference 118 by permission) ... 

Newman, C., and N. H. Moerke, Which Type of Pulsation Dampener Fits Your Compressor Problem Petroleum Processing. 1,724, Nov. (1955). 

Dwyer, J.J., Compressor Problems Causes and Cures, Hydrocarbon Processing, p. 77, Jan. (1973). 

The use of vibration monitoring to diagnose pump and compressor problems is discussed at the end of the subsection on compressor problems. 

Refrigerant composition (refrigeration systems), 231-234, 241 speed-limited, 232-233 horsepower-limited, 233 accumulator relief valve, 233-234 minimum suction pressure, 234 Refrigerant condenser problems (evaporating problems), 240 Refrigeration systems, 227-241 efficiency, 227-229 diagnosing compressor problems, 229—231 refrigerant composition, 231—234 ... 

Steam balance (energy savings), 218 Steam condensers, 121 Steam drivers (compressor problem diagnosis), 230-231 Steam nozzle, 289 Steam reboilers, 273-275, 382-383 ... 

Air intake filters plugged Pressure restriction of blower discharge Increased ambient temperature Compressor rotor fouled Blower turbine running slow Wet gas compressor problems Fractionator condensers plugged... 

The next step is to decide if the lost compression work is due to an engine deficiency or a compressor problem. To ascertain that a gas-engine driver is not limiting compression work, the following questions should all be answered in the affirmative. 

A system should be provided to absorb and/or reduce any chlorine vented for maintenance preparation or process upset, such as a sudden failure of the chlorine compressor, problems during the start-up of a circuit, or a breakdown of the tail gas handling system. 

Normally to be inspected when readily visible or when conditions indicate compressor problems.)... 

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