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IEA Greenhouse Gas R&D Programme

Jasmin cropIt is important for power plants to be able to operate flexibly to respond to changes in consumer demand for electricity. Flexibility is also becoming increasingly important due to the greater use of other low carbon generation technologies, particularly variable renewable generators. The issue of operating flexibility of power plants with carbon capture and storage (CCS) has been the subject of a previous technical study by IEAGHG (“Operating flexibility of power plants with CCS, IEAGHG report 2012/6, June 2012”, see here: The new report contributes to the knowledge base on flexible operation of power plants with CO2 capture by focusing on process control issues.

A team from Imperial College London and Process Systems Enterprise has undertaken this work for IEAGHG.
The study focuses on performing an evaluation of process control strategies for normal, flexible and upset operation conditions of CO2 post-combustion capture (PCC) processes based on solvent scrubbing. PCC is currently the leading near-term technology for large-scale deployment of CO2 capture in the power generation sector. The aim of this study was to develop process control strategies PCC, to select appropriate control variables, and to design efficient control structures for operation with minimum energy requirements and costs for both pulverised coal (PCPP) and combined cycle gas turbine (CCGT) power plants.

The key messages from the report are: