Both chemical looping processes and oxygen permeable ceramic membranes require a gassolid surface reaction to occur in order to function. Chemicallooping combustion and chemicallooping with. Coal chemicallooping with oxygen uncoupling clou using. A pressurized clc combined cycle pclccc system is proposed as a promising coal combustion. Oxygen carriers for chemical looping with oxygen uncoupling clou tobias mattisson, kevin j whitty. Pdf materials for chemicallooping with oxygen uncoupling. Chemical looping combustion and chemical looping with. Pdf using chemicallooping with oxygen uncoupling clou. A variant of clc is chemicallooping combustion with oxygen uncoupling clou where an oxygen carrier is used that releases gasphase oxygen in the fuel reactor, e. Oxygen vacancy creation energy in mncontaining perovskites.
This study focuses on improving the understanding of mechanisms responsible for carbon conversion of coal and coal char in a benchscale fluidized bed reactor. Pressurized chemicallooping combustion of coal with an iron. Thermodynamics, material development, and synthesis, energy technology on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The chemicallooping combustion clc and chemicallooping with oxygen uncoupling clou processes are attractive solutions for efficient combustion with inherent separation of carbon dioxide. Publications li research group department of chemical. In situ neutron powder diffraction study of the reaction.
A variant of clc is chemicallooping combustion with oxygen uncoupling clou where an oxygen carrier is used that releases gasphase oxygen in the fuel. Chemical looping with oxygen uncoupling clou is a promising co2capture ready energy technology that employs oxygen carriers with thermodynamic properties that cause oxygen to be spontaneously liberated as gaseous o2 in the fuel reactor, where it can react directly with solid fuels. A small lab reactor designed for tests of solid fuels has been developed, and an experimental procedure for testing solid fuels established. Handbook of chemical looping technology in searchworks catalog. The implications of these findings for the use of fe 1. Whether youve loved the book or not, if you give your. Mar 01, 2014 read a comparative process study of chemical looping combustion clc and chemical looping with oxygen uncoupling clou for solid fuels, international journal of greenhouse gas control on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Chemicallooping with oxygen uncoupling clou process is a chemical looping combustion clc technology that allows the combustion of solid fuels with inherent co 2 separation. Louis in partial fulfillment of the requirements for the degree of master of science august 2015 saint louis, missouri. A variant of clc is chemical looping combustion with oxygen uncoupling clou where an oxygen carrier is used that releases gasphase oxygen in the fuel reactor, e. Chemical looping systems for fossil energy conversions ebook.
Jingyu ran, fanxuan fu, changlei qin, peng zhang, lili yang, wending wang, and lin yang. The technology involves the use of a metal oxide as an oxygen carrier which transfers oxygen from combustion air to the fuel, and hence a direct contact between air and fuel is avoided. Evaluation of cuomgal2o4 in biomass chemical looping. Chemical looping combustion clc has been suggested as an energetically efficient method for capture of carbon dioxide from the combustion of fuel gas. Presented at the 4th international conference on chemical looping nanjing, china. System level and reactor level simulations of chemical looping combustion and chemical looping with oxygen uncoupling by xiao zhang a thesis presented to the school of engineering of washington university in st. Chemical looping combustion with oxygen uncoupling clou is a promising carbon capture and storage ccs technology for conversion of. I thesis for the degree of doctor of philosophy chemical looping combustion and chemical looping with oxygen uncoupling use of combined manganese and iron oxides for oxygen transfer. The aim of this work is to investigate the combustion of biomass in a chemical looping with oxygen uncoupling clou process with inherent co 2 separation. Compared to the conventional partial oxidation pox or autothermal reforming atr processes, the key advantage of the chemical looping reforming clr process is the elimination of the air separation unit asu for oxygen production. Both oxygen carriers allow chemical looping with oxygen uncoupling clou, they release oxygen under conditions with low oxygen partial.
This technique involves the use of an oxygen carrier that transfers oxygen from the air to the fuel, preventing direct contact between them. Both approaches, through either dynamic operation in the case of looping or membrane operation, allow a deg. Chemical looping with oxygen uncoupling clou process is a chemical looping combustion clc technology that allows the combustion of solid fuels with inherent co 2 separation. One promising clou material is the copper oxide redox system cuocu 2 o. Chemical looping systems can directly be engaged as an effective means for syngas production. Reviewarticle materials for chemicallooping with oxygen. Chemical looping combustion using two different perovskite. Chemical looping with oxygen uncoupling clou is considered a promising technology to burn solid fuels with improved co2 capture and has the potential to improve fuel conversion and reaction rates. Chemical looping and oxygen permeable ceramic membranes. Materials for chemicallooping with oxygen uncoupling. The carbon dioxide from the combustion is inherently separated from the rest of the flue gases. The results give proof of concept for both investigated options. A comparative process study of chemicallooping combustion. Chemicallooping with oxygen uncoupling for combustion of.
Chemical looping reforming clr and gasification clg are the operations that involve the use of gaseous carbonaceous feedstock and solid carbonaceous feedstock, respectively, in their conversion to syngas in the chemical looping scheme. Mathematical modelling of a twostage fuel reactor for chemical. Chemicallooping with oxygen uncoupling clou is a promising solid fuel. Department of chemical engineering, university of utah 50 s. Here, oxygen is released via a decomposition reaction, with the combustion reaction of the solid fuel with molecular oxygen being very fast. Thermodynamics, material development, and synthesis. Coal chemicallooping with oxygen uncoupling clou using a. The last alternative is referred to as chemicallooping with oxygen uncoupling clou.
Chemical looping with oxygen uncoupling clou is a novel combustion technology with inherent separation of carbon dioxide. Xrd and sem were used to characterize the oxygen carrier prepared. Chemicallooping with oxygen uncoupling clou process is a chemicallooping combustion clc technology that allows the combustion of solid fuels with inherent co2 separation. Review of oxygen carriers for chemical looping with oxygen. Evaluation of cuomgal 2 o 4 in biomass chemical looping gasification with oxygen uncoupling. You previously purchased this article through readcube. Regenerable, economically affordable fe2o3based oxygen carrier for chemical looping combustion hanjing tian, ranjani siriwardane, esmail r monazam, ronald w breault oxygen carriers for chemical looping with oxygen uncoupling clou tobias mattisson, kevin j whitty mixed metal oxidebased oxygen carriers for chemical looping. Copper oxide is one of the promising oxygen carrier materials in chemical looping with oxygen uncoupling clou technology, cycling between cu 2 o and cuo. Publications li research group department of chemical and. Chemical looping systems for fossil energy conversions wiley. Chemical looping combustion with oxygen uncoupling clou is a promising carbon capture and storage ccs technology for conversion of gaseous and solid hydrocarbon fuels where the release of gaseous o 2 from an oxygen carrier is favored at high temperature and low o 2 partial pressure. Unfortunately, they typically exhibit lower reactivity and lack the mechanical robustness required, when compared to synthetically produced carriers. In this study, a novel configuration of the fuel reactor for chemical looping combustion with oxygen uncoupling of solid fossil fuels is proposed. The process is a threestep process which utilizes a circulating oxygen carrier to transfer oxygen from the combustion air to the fuel.
Cubased oxygen carriers cuoc are often used in solid fuel clou. View table of contents for handbook of chemical looping technology. Nov 07, 20 an alternative strategy is chemical looping with oxygen uncoupling clou 1. Enhancing properties of iron and manganese ores as oxygen. Oct 18, 2018 this book includes comprehensive descriptions of various. Chemicallooping with oxygen uncoupling clou process using cu, fe and mn based oxygen carriers, 3rd international conference on chemical looping combustion, gothenburg, sweden, 911 september 2014. Chemical looping systems for fossil energy conversions. Development of enabling technologies for chemical looping combustion and chemical looping with oxygen uncoupling clouthe university of utah salt lake city, ut will develop technologies to improve system performance and reduce costs of chemical looping combustion and clou by focusing on oxygen carrier management and reactor design and. The temperature generally refers to the temperature used during the decomposition uncoupling reaction or the temperature in the fuel reactor. In the variant of clc known as chemical looping with oxygen uncoupling clou, the oxygen carrier releases gaseous o 2 in the fuel reactor, allowing for a rapid reaction with solid fuels. Chapter 2 is devoted entirely to the performance of particles in chemical looping. Selection of oxygen carriers for chemicallooping combustion.
Chemical looping with oxygen uncoupling clou processes. In this study, a multiscale model was developed to describe the oxidation kinetics of the cubased oxygen carrier particle with oxygen, including surface, grain, and particle scale. Department of energy, national energy technology laboratory, working on the development of chemical looping combustion and gasification technologies including fluidized reactor characterization. Measurement and modeling of decomposition kinetics for. A multiscale model of oxidation kinetics for cubased. Chemical looping combustion with oxygen uncoupling clou is a promising co2capture ready energy technology that employs oxygen carriers with thermodynamic properties that cause oxygen to be spontaneously liberated as gaseous o2 in the fuel reactor, where it can react directly with solid fuels. Chemical looping with oxygen uncoupling clou is a carbon capture technology that utilizes a metal oxide as an oxygen carrier to selectively separate oxygen from air and release gaseous o 2 into a reactor where fuel, such as coal, is combusted. Oxidation kinetics of cu2o in oxygen carriers for chemical. Chemicallooping with oxygen uncoupling clou is very similar to clc, but uses oxygen carriers with the ability to release gas phase oxygen, which reacts directly with the fuel, hence avoiding the necessity for a direct reaction between fuel. Chemical looping combustion with oxygen carrier uncoupling, a. Chemical looping with oxygen uncoupling clou is a clc technology that allows the combustion of solid fuels as in common combustion with air by means of an oxygen carrier that release gaseous oxygen in the fuel reactor. Review of oxygen carriers for chemical looping with oxygen uncoupling clou.
Using chemicallooping with oxygen uncoupling clou for. Review article materials for chemicallooping with oxygen. The key features of the chemical looping processes, their ability to generate a sequestrationready co2 stream, are thoroughly discussed. Abstract economic benefits can be expected in the future if co 2 capture and storage are implemented in energy generation from biomass combustion. The process utilizes two interconnected fluidized bed reactors, an air reactor and a fuel reactor. Regenerable, economically affordable fe2o3based oxygen carrier for chemical looping combustion hanjing tian, ranjani siriwardane, esmail r monazam, ronald w breault. Chemical looping combustion clc is a new combustion technology with inherent separation of cosub 2.
Chemicallooping with oxygen uncoupling clou is a novel combustion technology with inherent separation of carbon dioxide. Clou uses a solid oxygen carrier oc that releases gaseous o 2 to combust the solid fuels. Chemical loopingwithoxygenuncouplingclouisvery similartonormalclc,withthemajordifferencethatthe. Chemical looping with oxygen uncoupling clou represents a potentially highefficiency approach to capture co 2 in the utilization of solid fuels. Chemical looping combustion clc is a new combustion technology with inherent separation of the greenhouse gas co2. Characteristics and clou performance of a novel sio2supported oxygen carrier prepared from cuo and. Chemicallooping technologies see also chapter 11 do not produce free oxygen, but make use of metallic oxygen carriers to transfer the oxidizing agent to a fuel for full or partial combustion. Chemical looping combustion and chemical looping with oxygen uncoupling clou with oxygen carrier particles consisting of camn 1 x m x o 3 m ti, fe, mg has been studied by consecutive oxidation and reduction experiments in a fluidizedbed batch reactor. A multiscale model of oxidation kinetics for cubased oxygen. Biomass combustion with co2 capture by chemical looping. Evaluation of manganese minerals for chemical looping. Chemicallooping with oxygen uncoupling clou is a novel method to burn solid fuels in gasphase oxygen without the need for an energy intensive air separation unit.
Based oxygen carrier for chemical looping combustion pages. This study focused on investigating cuoc derived from a natural mineral for solid fuel clou because of. The process is a threestep process which utilizes a circulating oxygen. Jian dou, emily krzystowczyk, xijun wang, thomas robbins, liang ma, xingbo liu, and fanxing li a and bsite codoped srfeo 3 oxygen sorbents for enhanced chemical looping air separation. Handbook of chemical looping technology wiley online books. Copper oxide is one of the promising oxygen carrier materials in chemical looping with oxygen uncoupling clou technology, cycling between cu2o and cuo. An effective indicator for chemical looping with oxygen uncoupling. Oxygen carriers chapter 6 regenerable, economically affordable fe 2 o 3.
Metal oxide redox chemistry for chemical looping processes. Chemical looping reforming and gasification wikipedia. In this paper, the combined cubased oxygen carrier were prepared by mechanical mixing method. After studying chemical engineering at clarkson university and the university of new hampshire he had been working. Copper in chemicallooping combustion clc and chemical. Mnzfe1zyox combined oxides as oxygen carrier for chemical. Chemical looping gasification clg is a promising method for the utilization of biomass to produce syngas. Pdf particleresolved simulation and modeling of the. Chemical looping with oxygen uncoupling clou is a promising solid fuel chemical looping combustion clc process for co 2 emission control 1,2. Chemical looping combustion reference plant designs and sensitivity studies, doenetl 20141643 2014 2.
This is helpful for achieving high gas conversion, and especially when using solid fuels, where slow steam gasification of char can be avoided. This book presents the current carbonaceous fuel conversion technologies based on chemical looping concepts in the context of traditional or conventional technologies. Oxygen uncoupling of cubased oxygen carrier with the. Chemical looping with oxygen uncoupling clou is a novel method to burn solid fuels in gasphase oxygen without the need for an energy intensive air separation unit. Materials for chemicallooping with oxygen uncoupling hindawi. In the last years, several cubased, mnbased, and mixed oxide oxygen o2 carriers have been tested showing good clou. Pressurized chemicallooping combustion of coal with an. Solid fuel conversion via chemicallooping with oxygen.
Up of chemical looping with oxygen uncoupling clou systems pages. Demonstration of chemicallooping with oxygen uncoupling. Chemical looping with oxygen uncoupling clou processes pages. Chemicallooping combustion and chemicallooping with oxygen. Liangshih fan this book presents the current carbonaceous fuel conversion technologies based on chemical looping concepts in the context of traditional or conventional technologies. The reduction kinetic of the combined cubased oxygen carrier. The process is usually carried out in a connected fluidized bed system, with an air reactor, in which a reduced metal is being oxidized. Reaction engineering, kinetics, and catalysis mn z fe 1z y o x combined oxides as oxygen carrier for chemical. Sebastian sundqvist, nazli khalilian, henrik leion, tobias mattisson and anders lyngfelt, manganese ores as oxygen carriers for chemical looping combustion clc and chemical looping with oxygen uncoupling clou, journal of environmental chemical engineering, 5, 3, 2552, 2017.
As in the clc technology, in the clou process the oxygen necessary for. Examining and modeling oxygen uncoupling kinetics of cubased. Oxygen carrier for the chemical looping with oxygen uncoupling process, energy fuels, 2012. Chemicallooping with oxygen uncoupling clou is very similar to clc and has the same advantages withrespecttoe cienciesanddegreeofcarboncapture,but the mechanism of fuel conversion is di erent, and this could resultinsigni cantadvantageswithrespecttofuelconversion rates, which can have positive implications with. Handbook of chemical looping technology ebook, 2019. Development and scaleup of copperbased chemical looping with oxygen uncoupling. Chemical looping systems for fossil energy conversions book. Oxygen carriers for chemical looping with oxygen uncoupling clou mixed metal oxides carriers oxygen carrier structure and attrition commercial design studies of clc systems cfd simulation of particle separation in a binary fluidize d bed inside a riserbased carbon stripper for chemical looping combustion the calcium chemical looping process. System level and reactor level simulations of chemical. The use of mineral materials as oxygen carriers for chemical looping combustion clc is an attractive option due to their low cost. Measurement and modeling of decomposition kinetics for copper. As in the clc technology, in the clou process the oxygen necessary for the fuel combustion is supplied by a solid oxygen carrier, which contains a metal oxide. Subsequently, recent advances in the development of novel oxygen.
Theoretical models for chemical looping combustion and unique experimental facilities are utilized for this proofofconcept study. Figure 2 materials for chemicallooping with oxygen uncoupling. Most of the previous investigations on clc of solid fuels were conducted under atmospheric pressure. Subhodeep banerjee, ramesh agarwal, and zheming zhang, transient reacting flow. These processes use a metal oxide as an oxygen carrier to transfer oxygen from an air to a. Clou, represents a unique combustion scheme that is directly related yet notably different from conventional combustion processes. With the presence of complex mineral matters in solid fuels, the interaction between oxygen carrier and coalderived ash in clou was necessary to be well understood.
The oxygen carrier particles are transported from the air reactor 1, via the main cyclone 2 and particle lock 4 to the fuel reactor 3. Chemicallooping with oxygen uncoupling using cuozro2 with petroleum coke accepted for publication in fuel, 2008 paper x h. The use of naturally occurring ores as oxygen carriers in clc processes is attractive because of their relative abundance and low cost. The oxygen uncoupling property of the oxygen carrier is essential for the chemical looping gasification process. Chemicallooping with oxygen uncoupling clou is a novel method to burn solid fuels in gasphase oxygen without the need for an energy intensive air.
Chemical looping refers to indirect combustion and reforming processes for power generation andor hydrogen. Economically viable fe2o3based oxygen carriers for chemical looping oxygen carriers for chemical looping with oxygen uncoupling clou mixed metal oxides carriers oxygen carrier structure and attrition commercial design studies of clc systems cfd simulation of particle separation in a binary fluidize d bed inside a riserbased carbon stripper. Chemical looping with oxygen uncoupling systems studies. This paper reports an experimental study of four manganese minerals as potential oxygen carriers focusing on the behavior in clc as well as in chemical looping with oxygen uncoupling clou. Rate analysis of chemicallooping with oxygen uncoupling clou.
265 594 1308 1288 1046 817 1139 578 519 1442 883 427 725 662 229 1540 298 1492 178 1074 140 1517 324 85 476 508 1016 118 906 705 748 386 1429 264 795 836 657