课题二论文
发布日期: 2019-04-30

                        论文1

论文名称

Investigation   of thermal characteristics of municipal solid waste incineration fly ash   under various atmospheres: A TG-FTIR study

收录期刊

Thermochimica   Acta

Top/影响因子

2.251

年份///

已录用待刊出

作者

Qinyang   Gu, Wei Wu, Baosheng Jin

论文摘要

Municipal solid   waste incineration (MSWI) fly ash is defined as a hazardous waste due to   various leachable heavy metals and organic contaminants, the thermal methods   can effectively vitrify fly ash. In this study, the thermal characteristics   of fly ash were investigated by using TG-FTIR under different atmospheres.   The values of residue mass under N2, air and CO2 at   1150 ,   in turn, were 65.76 wt.%, 69.17 wt.% and 56.24 wt.%, respectively. The   results revealed that the mineral phase of residue and the gas evolution were   affected by O2, while the product of Chlorellestadite only existed   in air atmosphere. The mechanism accounting for the difference at high   temperature was that organic matter could contact O2 or CO2 easily,   because the changed morphology of fly ash lessened the obstacles caused by   ash. This study provides insights for further thermal treatment of fly ash.

与本项目相关性

为有机固废热解过程重金属热阻断提供参考

DOI

10.1016/j.tca.2019.178402

 

                     论文2

论文名称

Intrinsic   Kinetics Study of Biogas Methanation Coupling with Water Gas Shift over   Re-Promoted Ni Bifunctional Catalysts

收录期刊

Catalysts

Top/影响因子

3.444

年份///

2019,   9(5), 422

作者

Xinxin   Dong, Baosheng Jin, Zhiwei Kong, Lu Dong

论文摘要

The   intrinsic kinetics of biogas methanation coupling with water gas shift over Re-promoted   Ni bifunctional catalysts were investigated in this study. The catalysts were   prepared through co-impregnation of Ni and Re precursors on the H2O2-modified   manganese sand. The experiments were performed in a fixed bed reactor under   the assorted reaction conditions of 300–400 °C, 0.1–0.3 MPa, and a 0.6–1.0 H2/CO   ratio. The effect of gas internal and external diffusion on the performance   of methanation coupling with water gas shift was examined by changing   catalyst particle size and gas hourly space velocity (GHSV) and further   verified by the Weisz–Prater and Mears criterion, respectively. It was found   that the internal and external diffusions were eliminated when the catalyst   particle size was 12–14 meshes and GHSV was 2000 h1. Three kinetics models including the empirical model (EM),   synergetic model (SM), and independent model (IM) were proposed, and 25 sets   of experimental data were obtained to solve the model parameters. By   mathematical fitting and analysis, it was discovered that the fitting situation   of the three kinetics models was in the order of EM > SM > IM, among   which EM had the highest fitting degree of 99.7% for CH4 and 99.9%   for CO2 with the lowest average relative error of 8.9% for CH4   and 8.7% for CO2. The over 30% of average relative error for CO2   in IM might exclude the possibility of the Langmuir–Hinshelwood water gas   shift mechanism in the real steps of biogas methanation coupling with water   gas shift over Re-promoted Ni catalysts.

与本项目相关性

为有机固废热解/气化合成气的高值化利用拓展途径

DOI

https://doi.org/10.3390/catal9050422

 

                    论文3

论文名称

生物质燃气变换-甲烷化双功能催化剂研究进展

收录期刊

化工进展

Top/影响因子


年份///

已录用待刊出

作者

董新新,金保昇

论文摘要

生物质燃气在达到居民使用标准前必须进行提质,变换-甲烷化工艺单元可同时降低CO含量和提高燃气热值,因此研发适合生物质燃气的变换-甲烷化双功能催化剂显得尤为重要。在已广泛研究的单功能水气变换和甲烷化催化剂基础上,近年来国内外对变换-甲烷化双功能催化剂也开展了诸多探究。本文从催化剂组成、制备方法和反应机理三方面对变换-甲烷化双功能催化剂进行了综述,详细介绍了适用于该种催化剂的活性组分、助剂与载体,比较分析了浸渍法、共沉淀法等传统制备方法与火焰喷雾燃烧法、等离子体分解法等新颖制备方法,并在文末对变换-甲烷化双功能催化剂进行了总结和展望,未来制备催化剂时助剂可根据具体要求选择性添加而廉价的矿石可替代成为有竞争力的催化剂载体,变换-甲烷化机理可借助多种材料表征以及理论计算而获悉。

与本项目相关性

为有机固废/生物质热解气高值化利用拓展途径

DOI

10.16085/j.issn.1000-6613.2019-0122


分享到 - 微信 X