selection/ sizing of electrical motor

dear ,

i want to do selection/ sizing of electical motor , & its electrical starter , the details of the load connected is given below.

blower details : tri lobe high pressure air blower ( sulphuric acid plant)

capacity : 30,000 mt cube per hour

inlet pressure : 1500 mwg

outlet pressure : 3500 mwg

g d square : 116 kg -mt square

kindly provide basis for the selection .

early reply will be appreciated

prakash