Minerals for Sustainable COst and energy efficient chemical looping combUstion Technology

用于可持续成本和能源效率的矿物化学循环燃烧技术

• 批准号: EP/L022427/1
• 负责人: Stuart Scott
• 金额: $ 21.47万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FL022427%2F1
• 关键词: Minerals; Sustainable; COst; energy; efficient

Chemical looping combustion aims to reduce the energy penalty in carbon capture systems by providing the oxygen for combustion from a solid oxygen carrier rather than from air. This means that the products of combustion are not diluted with nitrogen and allows pure CO2 to be easily collected for subsequent storage (i.e. CCS). The oxygen carrier usually consists of solid oxides which can give up their oxygen (and so become a reduced metal oxide) either by direct reaction with the fuel (e.g. CH4, CO or H2) or by releasing gas phase oxygen which can then react with the fuel (sometime call the CLOU effect). For solid fuels, materials are required which are low cost and can give full combustion and enhanced gasification by fast gaseous oxygen release). Such materials have been developed for gas based system but are too expensive for coal based systems where material losses are higher (lost with the ashes). Some laboratory made Fe-Cu and Fe-Mn compositions have shown the needed CLOU effect. In place of expensive manufactured materials, cheap mineral sources need to be identified with a comparable composition, which can be prepared, tested and verified to fulfil the demands of a CLC process. The mineral selected needs to have a sufficient reaction rate and capacity, low degradation and high attrition strength, and if possible, it should give enhanced gasification, including full conversion to CO2 and H2O.Natural sources can have large variations in Fe-Cu and Fe-Mn composition and are often mixed with different silicates etc. The silicates etc. might work as a support for the active Fe based material, e.g. enhancing the particle strength. However, the same silicates might reduce or influence the degradation of the capacity, depending on the type of silicate present. Other impurities may also pose challenges, e.g. contamination with toxic metals. This investigation into the different sources of material and selection of the sources which best match the demands CLC places on the circulating material is therefore an essential first step in the Mineral SCOUT project.The aim of this proposal is to investigate the performance of some new mineral sources with similar compositions to the manufactured materials with respect to the aforementioned criteria, before introducing one or two new promising minerals sources to partners in the CLC community.

项目成果

A thermogravimetric method for the measurement of CO/CO2 ratio at the surface of carbon during combustion

• DOI: 10.1016/j.proci.2018.05.040
• 发表时间: 2019
• 期刊: Proceedings of the Combustion Institute
• 影响因子: 3.4
• 作者: Wenting Hu;Ewa J. Marek;Felix Donat;J. S. Dennis;S. Scott

Pyrolysis of wood pellets in the presence of oxygen carriers in a fluidised bed coupled with a DBD reactor for tar quantification

• DOI: 10.1016/j.cej.2018.08.090
• 发表时间: 2019
• 期刊: Chemical Engineering Journal
• 影响因子: 15.1
• 作者: Yaoyao Zheng;R. Grant;Wenting Hu;S. Scott

Study of char gasifcation in Mineral Oxygen Carriers

矿物氧载体中焦炭气化的研究

• 发表时间: 2016
• 作者: Marek E

Enhancement of char gasification in CO2 during chemical looping combustion

• DOI: 10.1016/j.cej.2018.07.215
• 发表时间: 2018-12
• 期刊: Chemical Engineering Journal
• 影响因子: 15.1
• 作者: Ewa J. Marek;Yaoyao Zheng;S. Scott

Analysis of Char Gasification Enhancement during Chemical Looping Combustion

化学链燃烧过程中焦炭气化强化分析

• 发表时间: 2016
• 作者: Marek E