Function of cascade compressors and power consumption optimization in ammonia liquefaction process: a system evaluation with a 6 sigma approach

Ammonia is stored as a liquefied raw material it used in the fertilizer and cooling industries. The use of multistage compressors during storage essential, boiling point very low (-33°C) due to typical petroleum derivative. Because pressure-temperature optimization with single-stage compressor does not allow ammonia be under atmospheric conditions. condenser throttling valves systems together multi-stage for conditions allows liquid form storage. In this study, method has been developed optimize energy consumption by calculating power pressure temperature determined liquefaction anhydrous ammonia, improve minimize consumption.