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5th HTSLCN Meeting Cambridge

1 July 2014
Capture
Event Proceedings

The IEAGHG High Temperature Solid Looping Cycles Network (HTSLCN) emerged from the preceding International Workshop on In-situ CO₂ Removal (ISCR) and aims at bringing together researchers and developers of CO₂ capture technologies that operate at high temperatures in cyclic processes using either circulating or fixed beds of solids. The 5th HTSLCN Meeting was held from 2nd to 3rd September 2013 at Queens’ College, University of Cambridge, UK. It was jointly organised by IEAGHG, University of Cambridge and Cranfield University and received support from the UKCCS Research Centre and Johnson Matthey. A number of 60 delegates attended the meeting, which offered 36 presentations organised in three sessions. The first session covered demonstrations and pilot scale trials. The second session was split in two parallel streams that discussed the fundamentals in calcium looping (CaL) and chemical looping combustion (CLC) respectively. The third session presented new process concepts and system modelling and evaluation. A subsequent panel discussion and a site visit to the facilities at Cranfield University rounded off the technical programme.

Technical Report

CO₂ Capture at Coal-Based Power and Hydrogen Plants

1 May 2014
Capture

In recent years IEAGHG has undertaken a series of studies on the performance and costs of plants incorporating the three leading CO2 capture technologies: post combustion, oxy-combustion and pre-combustion capture. In the time since those studies were undertaken there have been significant technological advances and substantial increases in estimated plant costs. IEAGHG therefore decided to undertake a wholly new study on costs of capture at coal based plants producing the two leading low-carbon energy carriers, namely electricity and hydrogen. This study provides a baseline for possible future studies on plants in other countries, plants using other capture processes and capture in industries other than power and hydrogen generation. The study was carried out for IEAGHG by Foster Wheeler.

Technical Report

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 CO2 can lead to corrosion and hydrate formation. It is necessary to dehydrate CO2 streams prior to transporting the product in carbon steel pipelines. Several different types of CO2 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 CO2 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.

Technical Report

Evaluation of Reclaimer Sludge Disposal from CO₂ PCC Process

1 March 2014
Capture

In this study different solvent reclaiming technologies were evaluated for two reference power plants: Supercritical Pulverised Coal (SCPC) and Natural Gas Combined Cycle (NGCC) at their respective gross power outputs (900 and 810 MWe, respectively). A low sulphur Australian coal was used for SCPC case. A selective catalytic removal (SCR) unit is assumed upstream of the CO₂ capture unit for both the coal and natural gas power plants. In addition a wet flue gas desulfurization (FGD) unit and a sodium hydroxide polishing unit , is located upstream of the CO₂ capture unit in the coal-fired power plant thus reducing the SOx concentration to 10 ppmv or less .

Technical Report

Deployment of CCS in the Cement Industry

1 December 2013
Capture

The study focuses on the following tasks: 1. Review current practice in energy efficiency improvement and fuel and clinker substitution practices in relation to reduction of CO₂ emissions in the cement sector. 2. Engage with key stakeholders with the aim of identifying the key barriers to the demonstration of CCS in the cement sector. 3. Review the current state of development of potential CCS technologies evaluated for the cement industry, particularly oxyfuel and post-combustion capture and review current CCS activities initiated and led by the cement industry. 4. Review policy and government initiatives to support the application of CCS to the cement sector

Technical Report

Biomethane with CCS

1 September 2013
Capture

The aim of this study is to provide an understanding and assessment of the global potential - up to 2050 - for BE-CCS technologies producing biomethane. It makes a distinction between: Technical potential (the potential that is technically feasible and not restricted by economical limitations) and the Economic potential (the potential at competitive cost compared to the reference natural gas, including a CO₂ price).

Technical Report

Iron and Steel CCS Study (Techno-Economics Integrated Steel Mill)

1 July 2013
Capture
Costs of CCUS

The primary goal of this project is to establish a methodology to evaluate the cost of steel production when deploying CO₂ capture technology in an integrated steel mill. The objectives of this study were: To specify a “REFERENCE” steel mill typical to Western European configuration; and assess the techno-economic performance of the integrated steel mill without and with CO₂ capture. To evaluate the techno-economic performance, the breakdown of the CO₂ emissions; and estimating the CO₂ avoidance cost of the following cases: o Case 1: An integrated steel mill typical to Western Europe as the base case. o Case 2: Post-Combustion CO₂ capture using conventional MEA at two different levels of CO₂ capture rate (End of Pipe Cases or EOP) o Case 3: An Oxygen Blown Blast Furnace (OBF) with top gas recycle and the use of MDEA/Pz as solvent for CO₂ capture

Technical Review

Incorporating Future Improvements in existing PC, Tech. Rev

1 May 2013
Capture

This study intended to focus on the above mentioned process improvements and 2nd and 3rd generation technology evaluation. However, the work by Lucquiaud et al. 2012 focuses only on some of the above mentioned improvements such as improvements in amine based solvent properties like CO₂ absorption enthalpy, solvent heat capacity and CO₂ regeneration temperature by developing an equilibrium based model in gProms software. In this model each solvent property changes were performed independently to the other solvent properties. Table 1, shows the parameters used in the power plant and base case amine based solvent CO₂ post combustion capture plant.

Technical Review

Current State of the Art Technology for Iron & Steel Production

1 April 2013
Capture
Industry Insights

This document is drafted by IEA Greenhouse Gas R&D Programme in support of the activities of the EU Zero Emissions Platforms (ZEP) assessment of potential CCS deployment in the energy intensive industries. It aims to provide an overview of the current state of the art in steel production worldwide and present a brief overview of the development of different technology options for CO₂ capture in the steel industry. Steel is the largest globally traded metal. In 2011, around 1.49 billion tonnes of crude steel were produced worldwide; of which ~45% was from China. Other leading steel producing regions or countries include the EU27 (12%), NAFTA1 (8%), CIS2 (8%), Japan (7%), and India (5%). Figure 1 presents the historical data showing the crude steel production worldwide. In the last decade, steel production has achieved an average annual growth rate of around 5-6% [1

Technical Report

4th IEAGHG Network Meeting & Technical Workshop on High Temperature Solid Looping Cycles

1 March 2013
Capture
Event Proceedings

The IEAGHG High Temperature Solid Looping Cycles Network emerged from the preceding International Workshop on In-situ CO2 Removal (ISCR) and aims at bringing together researchers and developers of CO2 capture technologies that operate at high temperatures in cylindrical processes using either circulating or fixed beds of solids. Within the last few years drawbacks of the conventional amine-based CO2 capture systems have spurred interest in solid looping processes. Since then the technology has advanced considerably and several pilot plants have been build and brought into operation, e.g the 1.7MW pilot plant at La Pereda in Spain and the 1MW pilot plant at TU Darmstadt in Germany. Progress has been made in particular in carrier/sorbent development as well as in process design and integration. In Calcium Looping, for instance, the use of spent sorbent to produce cement has been demonstrated.

Technical Report

Post-Combustion CO₂ Capture Scale-Up Study

1 February 2013
Capture

This study assess the technical challenges associated with full-scale design and operation of conventional post-combustion capture technologies for supercritical pulverized coal (SCPC) and natural gas fired combined cycle (NGCC) power plant. In this study technical and operational risks, performance gaps, technical challenges and sensitivity to several process variables are evaluated. Finally, a suggested scale-up strategy was developed with a focus on specific areas for development in future.

Technical Report

CO₂ Capture at Gas Fired Power Plants

1 July 2012
Capture

The study considers five scenarios, selected to examine the implications of capture technology type, configuration and plant operation, on the metrics outlined above. These scenarios are: 1. A CCGT power plant (Reference Plant); 2. Scenario 2 not used 3. A CCGT power plant with post-combustion capture; 4. A CCGT power plant with post-combustion capture and flue-gas recirculation; 5. A Combined cycle power plant with Natural Gas reforming and pre-combustion capture; and 6. A Natural Gas Reforming plant with pre-combustion capture, providing hydrogen to a remote combined cycle power plant or intermediate storage. 7. Scenario 7 not used

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