CO2PipeHaz Consortium

The CO2PipeHaz consortium is made up of 7 partners from 5 different countries involved in diverse but complementary aspects of what is a complex project. It includes experts in the fields of thermodynamic and transport properties, CO2 purification, multi-phase heterogeneous flows, and dispersion at both small and large scales (near- and far-field).

This expertise spans the experimental measurement of relevant processes and parameters, as well as the mathematical modelling of such processes, and the embodiment of theoretical understanding within computational design and decision support tools. The CO2PipeHaz consortium contains experts in the development of good practice guidelines, in performing cost/benefit analysis, consequence, safety and risk assessments and developing the tools required to undertake them, and in the means that can be used to mitigate the impact of any accident. Expertise is also available in the areas of knowledge transfer and commercial exploitation. Additionally, the collaboration contains experts with direct practical experience of capturing, processing and transporting carbon dioxide, and in one case, experts who have direct experience of CCS systems at an industrial scale. This gives us the confidence that we will be able to generate the basic engineering science required to ensure understanding of the safety of CO2 transportation systems, and to translate that knowledge in to the tools needed for practical application in order to ensure the safe and commercial deployment of power generation technology based on CCS.

Additionally, all the CO2PipeHaz partners have experience of involvement in, and management of, large, multi-national projects, and that experience also spans the University, industrial, regulatory and consultancy sectors. As is demonstrated from the resumes of the various experts involved, they are collectively and uniquely positioned to perform all aspects of this project: ranging from the generation of new knowledge to the exploitation of that knowledge through its practical application. They are all at the highest research level in their chosen field, with significant publication records, and have demonstrated an interest in, and commitment to, the development and exploitation of CCS. Whilst the areas covered by the project are also clearly in line with each partner’s traditional interests, and hence they are suited and committed to the tasks assigned them, it is envisaged that participation in this inter-disciplinary project will also produce additional synergistic activities and results to the benefit of CCS.



Abstract

The CO2PipeHaz project addresses the fundamentally important and urgent issue regarding the accurate predictions of fluid phase, discharge rate, emergency isolation and subsequent atmospheric dispersion during accidental releases from pressurised CO2 pipelines to be employed as an integral part of large scale Carbon Capture and Storage (CCS) chain. This information is pivotal to quantifying all the hazard consequences associated with CO2 pipeline failure, forming the basis for emergency response planning and determining minimum safe distances to populated areas.

The proposed developments of the state of the art multi-phase heterogeneous discharge and dispersion models for predicting the correct fluid phase during the discharge process will be of particular importance given the very different hazard profiles of CO2 in the gas and solid states. Model validations will be based on both small scale controlled laboratory conditions as well as large scale field trials using a unique CCS facility in China, the world’s largest CO2 emitter. A cost/benefit analysis will be performed to determine the optimum level of impurities in the captured CO2 stream based on safety and economic considerations.

The work within CO2PipeHaz, carried out over a period of 36 months, will embody the understanding gained within safety and risk assessment tools that can be used for evaluating the adequacy of controls in CO2 pipelines, with best practice guidelines also being developed.