Compressors
Introduction
The main purpose of a compressor is to increase the pressure of a gas. ADGAS uses compressors:
• to supply compressed air for use throughout the plant
• to raise the pressure of process gas (or feed gas) received from the ADMA gas-oil separation plant going to Trains I and II for liquefaction
• in refrigeration processes that cool gas to liquefy it
• to re-compress boil-off-gas (LNG) and vapour recovery (LPG) in the STOREX area
• in gas turbines, to increase the pressure if air entering the turbine Compressors are also needed where gas has to be moved through long pipelines. As gas flows along a pipeline, some of its pressure energy changes to heat energy because of fluid friction. This results in a loss of pressure. Compressors are located at points along the pipeline to boost the pressure. You can think of compressors as ‘gas pumps’. They do a similar job to a pump, have similar components and can often look like pumps. Most of the compressors on the ADGAS plant are centrifugal compressors. They have the same principal of operation as a centrifugal pump but run at much higher speeds than a pump. They are often driven directly by turbines. If they are driven by electric motors, a gearbox may be needed to increase the drive speed to the compressor.
Compressors
Introduction
The main purpose of a compressor is to increase the pressure of a gas. ADGAS uses compressors:
• to supply compressed air for use throughout the plant
• to raise the pressure of process gas (or feed gas) received from the ADMA gas-oil separation plant going to Trains I and II for liquefaction
• in refrigeration processes that cool gas to liquefy it
• to re-compress boil-off-gas (LNG) and vapour recovery (LPG) in the STOREX area
• in gas turbines, to increase the pressure if air entering the turbine Compressors are also needed where gas has to be moved through long pipelines. As gas flows along a pipeline, some of its pressure energy changes to heat energy because of fluid friction. This results in a loss of pressure. Compressors are located at points along the pipeline to boost the pressure. You can think of compressors as ‘gas pumps’. They do a similar job to a pump, have similar components and can often look like pumps. Most of the compressors on the ADGAS plant are centrifugal compressors. They have the same principal of operation as a centrifugal pump but run at much higher speeds than a pump. They are often driven directly by turbines. If they are driven by electric motors, a gearbox may be needed to increase the drive speed to the compressor.
