Abstract: A natural gas processing system is configured to process a two-phase flow in a natural gas transportation system. The natural gas processing system has an off-gas compression package with a compressor suction drum, joined to a stabilizer and to a first stage compressor. A first stage off-gas after cooler is joined to the compressor suction drum and a second stage off-gas suction drum. The second stage off-gas suction drum is operatively coupled to a two-phase separator. A second stage compressor is joined to the second stage off-gas suction drum and a second stage off-gas after cooler. The second stage off-gas after cooler is operatively coupled to an acid gas removal system. The off-gas compression package separates the liquid phase from an off-gas phase.

Abstract: An integrated computer control process is used for a decoking cycle that takes into account all affected process variables including temperature, pressure, flow rates, and time related functions. Manual operator input is limited to setting the basis of the decoking cycle, which can include temperatures and pressure ranges, and monitoring key parameters, such as pressure tests.