oil refining

In petrifaction enterprise, the 3 machine to refinery (cigarette machine, advocate fan, baric machine and hydrogenous press) , the 5 machine of fertilizer plant (gas of press of gas of pneumatics machine, synthesis, ammonia, CO2, raw material or azotic press) , the 3 machine of ethylene plant, customarily calls big unit or crucial unit. These big unit almost by industrial turbine the centrifugal type of place drive (or the axis sorts type) compressor place composition, have rotate speed tall, power concentrated, price holds big, technology high