Compressors Nozzle Orientations

For centrifugal compressors, nozzle orientation must be specified. If the compressor is on an elevated foundation, the down-nozzle orientation makes maintenance much easier, because major piping does not have to be removed to lift the casing upper half. Figure 11-1 shows an unusual case where all the nozzles are in the upper casing half. 

Figure 11-1. This steam turbine-driven centrifugal compressor, shown just prior to shipping, has all nozzles in the upper half of the casing. Note the non-vertical orientation of the inlet nozzle. Courtesy of A-C Compressor Corporatior ...

Provision of air lock rotary valve at bottom discharge nozzle for continuous removal of dust collected inside. Overall size of the unit—length x breadth x height. It should be possible to install the bag filter in a satisfactory manner in the available space. There should be enough space aroimd to install air compressor, air receiver tank, electrical control panel and for maintenance activities. Orientations of gas inlet and exit nozzles should be as per locations of process imits in the plant. 

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