Evaluation and analysis of the performance of dehydration units for CO₂ capture
- 1 April 2014
- Capture
- Transport
The purpose of the study is to examine the characteristics of the various dehydration processes and the way they can be best integrated into the CCS system. Moisture in CO<sub>2</sub> can lead to corrosion and hydrate formation. It is necessary to dehydrate CO<sub>2</sub> streams prior to transporting the product in carbon steel pipelines. Several different types of CO<sub>2</sub> capture processes exist. The type selected for use is dependent upon the basic type of combustion process in operation, e.g. coal or natural gas. The CO<sub>2</sub> produced by the various combustion and associated capture processes is of different quality, containing different inerts and impurities, with varying compositions and conditions. The dehydration process can be significantly affected by these differences; it was therefore necessary to consider the different types of capture process separately within this study.