Pipeline Transportation of Carbon Dioxide Containing Impurities
9 Pumping, Compression and Other Appurtenances
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If the CO2 stream is being transported in supercritical or dense phase, it is important that the pressure is kept sufficiently high to avoid two-phase flow. As mentioned in the previous chapter, that pressure drops occur in the pipeline due to frictional effects and gravitational (static head) effects related to the pipeline elevation. Furthermore, the fact that the supercritical or dense phase CO2 is as dense as most hydrocarbon liquids (600–900kg/m3) means that the effect of static head on the pressure is significant. This will be important in areas where there are variations in topographic height along the pipeline route....