What is the difference between hp and lp compressor?

Answer 1

• LP Compressor Package

Source of LP gas is either from GC-16 (LP+TV) or from GC-28 (from LP Separator KO Drum). The LP gas transfer line carrying the LP+TV of GC-16 is routed to a new LP Gas Inlet Manifold, near TP-4 with pigging facilities to absorb the slamming actions of liquid slug, etc. at either end of the pipeline (namely in the vicinity of GC-16 and TP-4). The pig receiver and all other reliefs including common LP scrubber relief shall be integrated into the flare header of the GCP. The LP pig launcher relief goes to the existing flare in GC-16.

The Common LP Scrubber is designed for handling liquid slug during pigging and normal operation. The scrubber is provided with automatic level control valves and collected liquids are routed to the LP Compressor Closed Drain Header.

The GCP LP Compressor compresses the incoming gas from 20-60 psig to 270-300 psig and transfers the discharged gas to a 30" HP compressor suction manifold. The gas is compressed through a three-stage reciprocating compressor.

• HP Compressor Package

HP Gas from GC-16 is branched off through a new HP Scrubber to a new HP gas transfer line (approximate distance 3.5 KM) between GC-16 and TP-4 near GC-28. The line is equipped with pigging facility. HP gas may also come from the GC-28 HP Separator KO Drum.

All sources of HP gas join in a Common HP manifold before going to the Common HP Scrubber. The HP Common Scrubber is provided with automatic level control valves and collected liquids are routed to the HP Compressor Closed Drain Header. HP Gas is routed to the HP Gas Suction Scrubber within the compressor package. The GCP HP Compressor compresses the incoming gas from suction pressure of 210-260 psig to discharge pressure of 900-1,000 psig. The gas is compressed through a three-stage reciprocating compressor.