Publication Overview
The work was divided into two stages. The first part was to define the process requirements for the compression for typical coal fired, pre, post and oxy-combustion processes as well as for a gas fired post combustion process. Thereafter a number of optimisations of the integration of the compression system with the rest of the process were examined. In the second part selected manufacturers of CO2 compressors were asked to provide general information on their products and also to make selections and indicate budget prices for compressors to perform the 4 specific sets of compression process requirement. Two novel compression concepts were also reviewed, the most revolutionary being the supersonic compression technology being developed by Ramgen, the other being the use of a low pressure axial flow compressor for the first stage of compression. In addition a novel method to use heat of compression for regeneration of mole sieve dryers was investigated
Publication Summary
The study confirmed the importance of CO2 compression power in CCS overall plant efficiency. Manufacturer’s current efficiency claims proved to be slightly higher than assumptions made in previous studies. Alternative strategies for compression were found to have only a small impact on overall plant efficiency.
Integration of heat of compression into the power plant is essential to maximise efficiency.
