Page 424 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition
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390 Applied Process Design for Chemical and Petrochemical Plants
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Figure 6-41. Rotating lobe vacuum blowers showing lobe rotation as gas moves through the unit. By permission, Roots Division, Dresser
Industries, Inc.
Figure 6-42. Helical four fluted gate blower rotors/two lobes main rotor intermeshing. See Figure 6-44. By permission, Gardner-Denver Indus-
trial Machinery-Cooper Industries.
Figure 6-43. Screw-type rotors for rotary lobe blower. By permission, Roots Division, Dresser Industries, Inc.

