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Abstract A commercially available ASPEN PLUS simulation using a pipe model was employed to determine the maximum safe pipeline distances to subsequent booster stations as a function of carbon dioxide (CO 2 ) inlet pressure, ambient temperature and ground level heat flux parameters under three conditions: isothermal, adiabatic and with account of heat transfer. In the paper, the CO 2 working area was assumed to be either in the liquid or in the supercritical state and results for these two states were compared. The following power station data were used: a 900 MW pulverized coal-fired power plant with 90% of CO 2 recovered (156.43 kg/s) and the monothanolamine absorption method for separating CO 2 from flue gases. The results show that a subcooled liquid transport maximizes energy efficiency and minimizes the cost of CO 2 transport over long distances under isothermal, adiabatic and heat transfer conditions. After CO 2 is compressed and boosted to above 9 MPa, its temperature is usually higher than ambient temperature. The thermal insulation layer slows down the CO 2 temperature decrease process, increasing the pressure drop in the pipeline. Therefore in Poland, considering the atmospheric conditions, the thermal insulation layer should not be laid on the external surface of the pipeline.
Witkowski et al. (Sat,) studied this question.