欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
采用溶胶一凝胶法制备了掺杂La^3＋、Mg^2＋。。的复合钙基c02：吸收剂，并在固定床反应器上进行了多循环的煅烧／碳化实验，对其c02：吸收活性及循环反应稳定性进行了研究。实验结果表明，掺杂La^3＋、Mg^2＋。的复合钙基吸收剂可以显著提高吸收剂在多循环煅烧／碳化过程中的反应活性和循环稳定性。在XRD分析的基础上，计算和比较了不同钙基吸收剂CaO的微晶参数，发现掺杂La^3＋、Mg^2＋。。制备的氧化钙吸收剂可以有效地减小Ca0晶粒的尺寸。同时，通过FSEM图像分析，发现掺杂La2O3。制备的复合钙基吸收剂有一定程度的烧结现象发生，但由于掺杂的La^3＋”可以进入Ca0晶体与Ca^＋”发生不等价取代，导致阳离子空位增加，使晶格活化，有利于在碳化过程中与C02。发生反应，从而大大提高吸收剂的反应活性。
英文摘要：
Regeneratable CaO-based sorbents for CO2 capture during coal combustion process are receiving more and more attention. Unfortunately, the CO2 sorbtion capacity of CaO-sorbents based on natural limestone decreases rapidly with times of capture-and-release cycle because of severe sintering. This sintering can be effectively mitigated by properly doping metal oxides. In this paper an attempt was done to prepare a class of synthetic CaO/La203 and CaO/MgO sorbents by sol-gel method. The CO2 sorption capacity of these doped CaO-based sorbents in multi-cycles and the effect of additive La^3＋ or Mg^2＋ were investigated in a fixed bed reactor. The results show that additive of La2 03 or MgO） plays a positive role in the multiple capture/regeneration reactions. Based on XRD analysis, it is concluded that addition of La^3＋ or Mg^2＋ can significantly reduced the crystalline size of CaO. Furthermore, it is also showed from FSEM images analysis that the CaO-based sorbents doped La^3＋ also have certain degree sintering. However, the La^3＋ can get into CaO crystal, resulting in activation of CaO lattice and increase of cation vacancy, which can plays a positive role in the process of capturing CO2, thereby greatly improve the reactivity of these sorbents.
同期刊论文项目
同项目期刊论文
Comparison of CaO's effect on the fate of heavy metals during thermal treatment of two typical types
A TEMOM model to simulate nanoparticle growth in the temporal mixing layer due to Brownian coagulati
Pyrolysis and dehalogenation of plastics from waste electrical and electronic equipment (WEEE): a re
A study of non-isothermal kinetics of limestone decomposition in air (O2/N2) and oxy-fuel (O2/CO2) a
The DRESOR method for radiative heat transfer in a one-dimensionalmedium with variable refractive in
Characteristics of the Temperature Distribution and Product Gas Evolving of an Updraft Biomass Gasif
Kinetic vaporization of heavy metals during fluidized bed thermal treatment of municipal solid waste
Estimating soot volume fraction and temperature in flames using stochastic particle swarm optimizati
Principles of optimization of combustion by radiant energy signaland its application in a 660MWe dow
A simple moment model to study the effect of diffusion on the coagulation of nanoparticles due to br
Evolution of aromatic structures during the reforming of bio-oil: Importance of the interactions amo
Feasibility Study on Accessorial Limestone Injection Desulfurization System on Large Capacity Boiler
Effect of residence time on chemical and structural properties of hydrochar obtained by hydrothermal
Assessment of pyrolysis polygeneration of biomass based on major components: Product characterizatio
Numerical simulation of particle capture process of fibrous filters using Lattice Boltzmann two-phas
Simulation of the flow around an upstream transversely oscillating cylinder and a stationary cylinde
Enhanced cyclic stability of CO2 adsorption capacity of CaO-based sorbents using La2O3 or Ca12Al14O3
Moderate or Intense Low-Oxygen Dilution Oxy-combustion Characteristics of Light Oil and Pulverized C
Effects of hydrogen addition on entropy generation in ultra-lean counter-flow methane-air premixed c
Analysis of entropy generation in hydrogen-enriched ultra-lean counter-flow methane–air non-premixed
Simulated investigation of chemical looping combustion with coal-derived syngas and CaSO4 oxygen car
Efficient Desulfurization In O2/Co2 Combustion: Dependence On Combustion Conditions And Sorbent Prop
~Efficient Desulfurization in a New Scheme of Oxyfuel Combined with Partial CO2 Removal from Recycle
Characterization of natural copper ore as oxygen carrier inchemical-looping with oxygen uncoupling o
Mechanism study of reaction between CO and NiO(0 0 1) surface during chemical-looping combustion: Ro
Super-low NO Emission in a New Scheme of Oxy-fuel/MILD Combustion, Part I: Influence of Combustion C
First and second law analysis of hydrogen-air counter-flow diffusion combustion in various combustio
Effect of Functionalized Linker on CO2 Binding in Zeolitic Imidazolate Frameworks: Density Functiona
Morphological Changes of Pure Micro- and Nano-Sized CaCO3 during a Calcium Looping Cycle for CO2 Cap
Density functional theory study of mercury adsorption on V2O5 (001) surface with implications for ox
Characterization and evaluation of Fe2O3/Al2O3 oxygen carrier prepared by sol-gel combustion synthes
~A pilot scale study on co-capture of SO2 and NOx in O2/CO2 recycled coal combustion and techno-econ
Numerical simulation of flameless premixed combustion with an annular nozzle in a recuperative furna
~Scheme of O2/CO2 Combustion with Partial CO2 Removal from Recycled Gas. Part 1: Superlow NO Emissio
Distributed parameters modeling for evaporation system in a once-through coal-fired twin-furnace boi
Simulation of filtration process for multi-fiber filter using the Lattice-Boltzmann two-phase flow m
Effect of catalysts on the reactivity and structure evolution of char in petroleum coke steam gasifi
Analytical solution of TEMOM model for particle population balance equation due to Brownian coagulat
Effect of Support Material on Carbonation and Sulfation of Synthetic CaO-Based Sorbents in Calcium L
The effect of Ca on distribution of nitrogen species during coal pyrolysis in N2, CO2 and Ar atmosph
Improvement of the CO2 Absorption Performance Using Ionic Liquid [NH(2)emim][BF4] and [emim][BF4]/[b
Experimental investigation on simultaneous measurement of temperature distributions and radiative pr
Lattice Boltzmann simulation of the convective heat transfer from a stream-wise oscillating circular
Numerical study of turbulent double-diffusive natural convection in a square cavity by LES-based lat
First and second thermodynamic-law analyses of hydrogen-air counter-flow diffusion combustion in var
Implementation of tridirectional large lateralshearing displacement interferometryin temperature mea
Experimental detection of radiative energy signal from a supercharged marineboiler and simulation on
Improvement of CO2 Absorption Performance Using Ionic Liquid [NH2emim] [BF4] and [emim][BF4]/[bmim][
DISTRIBUTED PARAMETER MODELING AND THERMAL ANALYSIS OF A SPIRAL WATER WALL IN A SUPERCRITICAL BOILER
Combustion behaviours of tobacco stem in a thermogravimetric analyser and a pilot-scale fluidized be
Effect of kaolin additive on PM2.5 reduction during pulverized coal combustion: Importance of sodium
Effects of chemical forms of Alkali and Alkaline Earth Metallic Species on the char ignition tempera
Vaporization of heavy metals during thermal treatment of model solid waste in a fluidized bed incine
Relationship between nitrogenous species in coals and volatile nitrogen‐containing yields during pyr
Super-low NO Emission in a New Scheme of Oxy-fuel/MILD Combustion, Part II: Contributions of Various
CO2 capture of limestone modified by hydration-dehydration technology for carbonation/calcination lo
Release characteristics of alkali and alkaline earth metallic species duringbiomass pyrolysis and st
Two-dimensional distributions of temperature and soot volume fraction inversed from visible flame im
期刊信息
位置：