Compressor for high pressure polymerization
AssigneeExxonMobil Chemical Patents Inc.
InventorsJan J. Naets, Philip H. Cornelissen, Christopher K. Morgan
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Abstract
The invention provides a compressor for use as a secondary compressor for an ethylene polymerization tubular reactor comprising a motor and at least two compressor frames, at least one of the compressor frames being coupled to the motor by means of a contoured diaphragm flexible coupling.
Claims19
A compressor for use in an ethylene polymerization high pressure reactor system comprising a motor and two compressor frames, the two compressor frames arranged on opposite sides of the motor, one compressor frame being coupled to the motor via a rigid coupling and the other compressor frame being coupled to the motor via a contoured diaphragm flexible coupling;
- and further wherein the flexible coupling includes first and second diaphragms, each diaphragm having a hub adapted to receive fasteners and a rim adapted to receive fasteners, the flexible coupling further including a rigid tubular member fastened to and extending between the first and second diaphragms;
- and wherein each diaphragm is provided with a guard plate.
A process of making polyethylene homopolymers and polyethylene copolymers comprising the step of compressing at least 100 tones/hour of ethylene gas, optionally, including one or more comonomers, to a pressure of at least 1500 bar using a compressor comprising a motor and two compressor frames, wherein the two compressor frames are arranged on opposite side of the motor, one compressor frame being coupled to the motor via a rigid coupling and the other compressor frame being coupled to the motor via a contoured diaphragm flexible coupling;
- wherein the flexible coupling includes first and second diaphragms, each diaphragm having a hub adapted to receive fasteners and a rim adapted to receive fasteners, the flexible coupling further including a rigid tubular member fastened to and extending between the first and second diaphragms.
Dependencies are inferred from the claim text.