Publications
185 results found
Tawfiq KM, Miller GJ, Al-Jeboori MJ, et al., 2014, Comparison of the structural motifs and packing arrangements of six novel derivatives and one polymorph of 2-(1-phenyl-1<i>H</i>-1,2,3-triazol-4-yl)pyridine, ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, Vol: 70, Pages: 379-389, ISSN: 0108-7681
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- Citations: 9
Cao J, Boot-Handford M, Zili Z, et al., 2014, Effects of different preparation methods on chemical looping compounds, 247th National Spring Meeting of the American-Chemical-Society (ACS), Publisher: AMER CHEMICAL SOC, ISSN: 0065-7727
Dabai F, Paterson N, Milian M, et al., 2014, Tar Formation and Destruction in a Fixed Bed Reactor Simulating Downdraft Gasification: Effect of Reaction Conditions on Tar Cracking Products, ENERGY & FUELS, Vol: 28, Pages: 1970-1982, ISSN: 0887-0624
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- Citations: 32
Mukherjee S, Kumar P, Hosseini A, et al., 2014, Comparative Assessment of Gasification Based Coal Power Plants with Various CO<sub>2</sub> Capture Technologies Producing Electricity and Hydrogen, ENERGY & FUELS, Vol: 28, Pages: 1028-1040, ISSN: 0887-0624
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- Citations: 31
Hills T, Gambhir A, Fennell PS, 2014, The suitability of different types of industry for inter-site heat integration, Pages: 423-434, ISSN: 2001-7979
Several studies have shown that some highly-intensive processes are suitable for heat integration with each other (inter-site heat integration). This paper shows the results of an integration of the waste heat sources and potential sinks across several industries which have not yet received much attention for inter-site heat integration. The purpose of this paper is not to suggest that any particular configuration is currently possible, it is to demonstrate the significant theoretical savings and stimulate discussion of the where future research (e.g. into high temperature heat exchangers or solid to gas heat exchangers). By building two theoretical heat exchange networks, one to maximise heat recovery and one to maximise electricity generation, the characteristics of different process streams which are conducive or obstructive to successful, profitable integration can be identified. Heat recovery is slightly more profitable than electricity generation on first examination, but there are several major issues which are difficult to quantify and will add significant cost. In general, processes involving large quantities of liquids and condensing and evaporating gases, such as refineries, offer significant potential. Processes with incondensable, low-pressure gases and solid streams, such as cement plants, generally gain less profit from inter-site heat integration. All costs are in 2013 Euros.
Boot-Handford ME, Abanades JC, Anthony EJ, et al., 2014, Carbon capture and storage update, Energy and Environmental Science, Vol: 7, Pages: 130-189, ISSN: 1754-5692
In recent years, Carbon Capture and Storage (Sequestration) (CCS) has been proposed as a potential method to allow the continued use of fossil-fuelled power stations whilst preventing emissions of CO2 from reaching the atmosphere. Gas, coal (and biomass)-fired power stations can respond to changes in demand more readily than many other sources of electricity production, hence the importance of retaining them as an option in the energy mix. Here, we review the leading CO2 capture technologies, available in the short and long term, and their technological maturity, before discussing CO2 transport and storage. Current pilot plants and demonstrations are highlighted, as is the importance of optimising the CCS system as a whole. Other topics briefly discussed include the viability of both the capture of CO2 from the air and CO2 reutilisation as climate change mitigation strategies. Finally, we discuss the economic and legal aspects of CCS.
Chalmers H, Al-Jeboori M, Anthony B, et al., 2014, OxyCAP UK: Oxyfuel Combustion - Academic Programme for the UK, 12th International Conference on Greenhouse Gas Control Technologies (GHGT), Publisher: ELSEVIER SCIENCE BV, Pages: 504-510, ISSN: 1876-6102
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- Citations: 1
Napp TA, Gambhir A, Hills TP, et al., 2013, A review of the technologies, economics and policy instruments for decarbonising energy-intensive manufacturing industries, Renewable & Sustainable Energy Reviews
Industrial processes account for one-third of global energy demand. The iron and steel, cement and refining sectors are particularly energy-intensive, together making up over 30% of total industrial energy consumption and producing millions of tonnes of CO2 per year. The aim of this paper is to provide a comprehensive overview of the technologies for reducing emissions from industrial processes by collating information from a wide range of sources. The paper begins with a summary of energy consumption and emissions in the industrial sector. This is followed by a detailed description of process improvements in the three sectors mentioned above, as well as cross-cutting technologies that are relevant to many industries. Lastly, a discussion of the effectiveness of government policies to facilitate the adoption of those technologies is presented. Whilst there has been significant improvement in energy efficiency in recent years, cost-effective energy efficient options still remain. Key energy efficiency measures include upgrading process units to Best Practice, installing new electrical equipment such as pumps and even replacing the process completely. However, these are insufficient to achieve the deep carbon reductions required if we are to avoid dangerous climate change. The paper concludes with recommendations for action to achieve further decarbonisation.
Manovic V, Fennell PS, Al-Jeboori MJ, et al., 2013, Steam-Enhanced Calcium Looping Cycles with Calcium Aluminate Pellets Doped with Bromides, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 52, Pages: 7677-7683, ISSN: 0888-5885
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- Citations: 47
Tong D, Maitland GC, Trusler MJP, et al., 2013, Solubility of carbon dioxide in aqueous blends of 2-amino-2-methyl-1-propanol and piperazine, Chemical Engineering Science, Vol: 101, Pages: 851-864, ISSN: 0009-2509
In this work, we report new solubility data for carbon dioxide in aqueous blends of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ). A static-analytical apparatus, validated in previous work, was employed to obtain the results at temperatures of (313.2, 333.2, 373.2, 393.2) K, and at total pressures up to 460 kPa. Two different solvent blends were studied, both having a total amine mass fraction of 30%: (25 mass% AMP+5 mass% PZ) and (20 mass% AMP+10 mass% PZ). Comparisons between these PZ activated aqueous AMP systems and 30 mass% aqueous AMP have been made in terms of their cyclic capacities under typical scrubbing conditions of 313 K in the absorber and 393 K in the stripper. The Kent–Eisenberg model was used to correlate the experimental data.
Al-Jeboori MJ, Nguyen M, Dean C, et al., 2013, Improvement of Limestone-Based CO<sub>2</sub> Sorbents for Ca Looping by HBr and Other Mineral Acids, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 52, Pages: 1426-1433, ISSN: 0888-5885
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- Citations: 51
Dean C, Hills T, Florin N, et al., 2013, Integrating Calcium Looping CO<sub>2</sub> Capture with the Manufacture of Cement, GHGT-11, Vol: 37, Pages: 7078-7090, ISSN: 1876-6102
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- Citations: 18
Tong D, Trusler JPM, Maitland GC, et al., 2012, Solubility of carbon dioxide in aqueous solution of monoethanolamine or 2-amino-2-methyl-1-propanol: Experimental measurements and modelling, International Journal of Greenhouse Gas Control, Vol: 6, Pages: 37-47
Despite the importance of the accurate measurement of vapour–liquid equilibria (VLE) data, the reported values, even for well-studied systems such as MEA–H2O–CO2, are scattered. This work centres on the development of an experimental method to measure accurately the VLE of various aqueous amine systems. A static-analytic type of VLE apparatus has been constructed and employed to measure the VLE of CO2 in aqueous monoethanolamine and 2-amino-2-methyl-1-propanol. Gas chromatography was used to analyse the liquid phase compositions. The setup has been validated against literature data for 30 mass% MEA (monoethanolamine) at T = 313 and 393 K and was shown to be capable of generating reliable and repeatable data. New measurements for 30 mass% aqueous AMP (2-amino-2-methyl-1-propanol) solutions are also presented at temperatures between 313 and 393 K and a total pressure range of 23–983 kPa. A quasi-chemical model has been employed to interpret the experimental data for the MEA–H2O–CO2 and AMP–H2O–CO2 systems. The average absolute deviation (ΔAAD) between model prediction and experimental data is within 7%.
Fennell PS, Florin N, Napp T, et al., 2012, CCS from industrial sources, Sustainable Technologies, Systems & Policies, Vol: 2012, ISSN: 2220-2765
Okpoko E, Fennell PS, Hellgardt K, 2012, Cu based oxygen carriers for chemical looping processes
Chemical looping combustion (CLC) is a process developed to efficiently burn gaseous fuels and at the same time capture CO2 without an additional energy intensive separation unit. CLC is a two stage processes which involves supplying oxygen to the fuel for combustion using an oxygen carrier and the subsequent regeneration of the oxygen carrier back to its original state with air. CLC might be economically viable and depending on the design, specific reaction products can be obtained. Hydrogen and syngas are two very important products useful for power generation and intermediates production in the chemical industry. This project focuses on the investigation of Cu based oxygen carriers for the CLC process with particular respect to the stability and kinetics of the synthesised materials. Particles composed of 40, 60 and 80 % CuO supported on Al2O3 have been prepared by co-precipitation methods with Na2CO3 and NH4OH. X-ray analysis (XRD) reveals the presence of a mixture of CuO and CuAl2O4, both being reducible as evidenced by CO/CH4-TPR analysis. The reduction and oxidation kinetics where investigated in a TGA system for particle sizes < 355 μm. Reaction orders for CO, CH4 and O2 were determined as 2, 1.5 and 0.7, respectively and activation energies were in the order O2 > CO > CH4 at temperatures T ≤ 700 °C. The reactivity of the Cu-based oxygen carriers during 20 cycles was investigated both by TGA and fixed-bed reactor operation at temperatures ≤ 700 °C. SEM analysis revealed no sign of sintering with the carriers prepared with Na2CO3 but little sintering effects were observed with carriers prepared with NH4OH. The experimental results suggest that Cu-based oxygen carriers prepared by co-precipitation appear to be very suitable for CLC operation.
Zhao M, Florin NH, Fennell PS, et al., 2012, Synthesis of cao-scaffold adsorbent with superior stability for high-temperature CO2 capture
A sol-gel method was developed to graft CaO onto an inert scaffold (silicon oxide) to mitigate sintering and enhance the mechanical properties. This method gives a new approach to a porous and stable CaO-based sorbent that would not only improve CO2 capture but also enable the introduction of extra metallic sites to form a sorbent/catalyst composite. The sol-gel method formed interaction between CaO and scaffold (SiO3) and consequently a stable, porous, and ordered structure, which favored the sintering-resistant stability over multiple usages. This is an abstract of a paper presented at the AIChE Annual Meeting (Pittsburgh, PA 10/28/2012-11/2/2012).
Al-Jeboori MJ, Fennell PS, Michaela N, et al., 2012, Effects of Different Dopants and Doping Procedures on the Reactivity of CaO-based Sorbents for CO<sub>2</sub> Capture, ENERGY & FUELS, Vol: 26, Pages: 6584-6594, ISSN: 0887-0624
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- Citations: 50
Donat F, Florin NH, Anthony EJ, et al., 2012, Influence of High-Temperature Steam on the Reactivity of CaO Sorbent for CO<sub>2</sub> Capture, ENVIRONMENTAL SCIENCE & TECHNOLOGY, Vol: 46, Pages: 1262-1269, ISSN: 0013-936X
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- Citations: 187
Blamey J, Lu DY, Fennell PS, et al., 2011, Reactivation of CaO-Based Sorbents for CO<sub>2</sub> Capture: Mechanism for the Carbonation of Ca(OH)<sub>2</sub>, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 50, Pages: 10329-10334, ISSN: 0888-5885
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- Citations: 43
Burgess F, Lloyd PDW, Fennell PS, et al., 2011, Combustion of polymer pellets in a bubbling fluidised bed, COMBUSTION AND FLAME, Vol: 158, Pages: 1638-1645, ISSN: 0010-2180
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- Citations: 16
Dean CC, Blamey J, Florin NH, et al., 2011, The calcium looping cycle for CO<sub>2</sub> capture from power generation, cement manufacture and hydrogen production, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 89, Pages: 836-855, ISSN: 0263-8762
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- Citations: 283
Dean CC, Dugwell D, Fennell PS, 2011, Investigation into potential synergy between power generation, cement manufacture and CO<sub>2</sub> abatement using the calcium looping cycle, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 4, Pages: 2050-2053, ISSN: 1754-5692
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- Citations: 100
Florin NH, Fennell PS, 2011, Synthetic CaO-based sorbent for CO2 capture, Energy Procedia 2011
Fennell PS, Dennis JS, Hayhurst AN, 2011, Latter Stages of the Reduction of NO to N<sub>2</sub> on Particles of Fe while Simultaneously Oxidizing Fe to Its Oxides, ENERGY & FUELS, Vol: 25, Pages: 1510-1520, ISSN: 0887-0624
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- Citations: 10
Blamey J, Paterson N, Dugwell D, et al., 2011, Reactivation of a CaO-Based Sorbent for CO2 Capture from Stationary Sources, Proc. Comb. Inst. (accepted)
Gonzalez B, Blamey J, McBride-Wright M, et al., 2011, Calcium looping for CO<sub>2</sub> capture: sorbent enhancement through doping, 10th International Conference on Greenhouse Gas Control Technologies, Publisher: ELSEVIER SCIENCE BV, Pages: 402-409, ISSN: 1876-6102
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- Citations: 42
Anthony EJ, Fennell PS, 2011, Carbon capture technology: status and future prospects, HANDBOOK OF SUSTAINABLE ENERGY, Editors: Galarraga, GonzalezEguino, Markandya, Publisher: EDWARD ELGAR PUBLISHING LTD, Pages: 357-374
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- Citations: 2
Florin N, Blamey J, Fennell PS, 2010, SYNTHETIC CAO-BASED SORBENT FOR CO2 CAPTURE FROM LARGE-POINT SOURCES, Energy and Fuels (accepted)
Paterson N, Nyako F, Millan M, et al., 2010, TAR FORMATION AND DESTRUCTION IN A FIXED BED REACTOR SIMULATING DOWNDRAFT GASIFICATION: EQUIPMENT DEVELOPMENT & CHARACTERIZATION OF TAR CRACKING PRODUCTS, Energy and Fuels (accepted)
Mac Dowell N, Florin N, Buchard A, et al., 2010, An Overview of CO2 capture technologies, Energy and Environmental Science, Vol: 3, Pages: 1645-1669
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