Christian Bernstone

CO2 quality requirement for a system with CO2 capture, transport and storage

Publisher Summary This chapter discusses the CO2 purity/specification for a CO2 capture transport and storage system. A list of potential impurities in the captured CO2 stream is provided for considerations to bring forward a practical CO2 specification that could be used as a guideline for CO2 capture, transport, and storage, and is also acceptable for environmental regulations. The aim of CO2 capture is to reduce the emissions of CO2 and other pollutants from fossil fuel fired power plants. To achieve this aim, the capture process should provide a concentrated CO2 stream for further transport and storage. The quality of the captured CO2 stream technically depends on the fuel used, approaches used for the combustion and the capture process. The CO2 quality requirements are defined by the limitations set by CO2 transport, storage, safety and environmental regulations, and the cost. There are generally no strong technical barriers to provide high purity of CO2 from the flue gas of fossil fuel fired power plants; however, high purity requirements are likely to induce additional costs and energy requirements resulting in a loss of power plant efficiency. Excessively strict requirements on CO2 quality should be avoided to reduce costs associated with CO2 capture.

''The Schweinrich structure'', a potential site for industrial scale CO2 storage and a test case for safety assessment in Germany

Abstract The identification of risks associated with the geological storage of CO 2 requires methods that can analyse and assess potential safety hazards. This paper evaluates how performance assessment can be used as a method for assessing the impact of CO 2 storage on health, safety and the environment (HSE) with particular respect to potential future aquifer storage in the anticlinal structure Schweinrich in Germany. The performance assessment was conducted under the CO2STORE European Fifth Framework project as one of the four cases on the aquifer storage of CO 2 . It is known as the Schwarze Pumpe case study. Being a case study, it is restrictive from a feasibility study point of view—i.e., the extended identification of the key safety factors where an actual CO 2 storage project would be considered for the Schweinrich structure. The study is based on data currently available, gathered in prior surveys, and on the use of simplified models, with CO 2 leakage levels from natural analogues being the evaluation criteria. While the results should be interpreted as provisional, they point out clearly which additional data should be gathered in relation to the long-term storage performance in the event that the site warrants further investigation.

MODELING THE GEOCHEMICAL IMPACT OF AN INJECTION OF CO2 AND ASSOCIATED REACTIVE IMPURITIES INTO A SALINE RESERVOIR

Carbon dioxide storage in deep geological structures is a strategic technology to mitigate climate change and to promote green development. However, despite continuous efforts to develop cost-effective capture processes to clean the CO2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}

International and European legal aspects on underground geological storage of CO2

\hbox {CO}_{2}

Modeling the Geochemical Impact of an Injection of \hbox {CO}_{2}

\end{document} stream before transportation and injection, traces of accessory gases cannot be entirely removed. Consequently, before any injection of these gas mixtures, the impact of impurities on the geochemical reactivity of the system must be evaluated. This paper describes numerical simulations done with TOUGHREACT that focus on the chemical reactivity of deep reservoir rock impacted by an injection of CO2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}

Visualisation of mechanisms involved in Co2 injection and storage in hydrocarbon reservoirsand water-bearing aquifers

\hbox {CO}_{2}