检索结果-南通市图书馆

syngas cleaning with nano-structured micro-porous ion exchange polymers in biomass gasification using a novel downdraft gasifier

引用

Journal of Energy Chemistry 2013年第3期22卷 426-435页

作者： Galip Akay C.Andrea Jordan Abdulaziz H.Mohamed Process Intensification and Miniaturization Centre School of Chemical Engineering and Advanced MaterialsNewcastle UniversityNewcastle upon TyneNE1 7RUUK ITI Energy Limited Advanced Manufacturing ParkBrunel WayRotherham S60 5WGUK

Sulphonated nano-structured micro-porous ion exchange polymers, known as sulphonated PolyHIPE Polymers （s-PHPs） were used in syngas cleaning to investigate their impact on tar composition, concentration and dew point depression during the gasification of fuel cane bagasse as a model biomass. The results showed that the s-PHPs used as a secondary syngas treatment system, was highly effective at adsorbing and reducing the concentration of all class of tars in syngas by 95%-80% which resulted in tar dew point depression from 90 ~C to 73 ~C. It was shown that tars underwent chemical reactions within s-PHPs, indicating that tar diffusion from syngas was driven by chemical potential. It was also observed that s-PHPs also captured ash forming elements from syngas. The use of s-PHPs in gasification as well as in an integrated thermochemical biorefinery technology is discussed since the tar loaded s-PHPs can be used as natural herbicides in the form of soil additives to enhance the biomass growth and crop yield.

关键词： biorefinery biomass downdraft gasifier gasification PolyHIPE Polymer syngas cleaning tar removal

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A thermodynamic study of the removal of HCI and H2S from syngas

引用

Frontiers of Chemical Science and Engineering 2012年第1期6卷 67-83页

作者： Joseph LEE Bo FENG School of Mechanical and lvlining Engineering the University of Queensland St Lucia Qld4072 Australia

Advanced integrated-gasification combined- cycle （IGCC） and integrated-gasification fuel cell （IFGC） systems require high-temperature sorbents that are capable of removing hydrogen chloride and hydrogen sulfide from coal derived gases to very low levels. HCI and H2S are highly reactive, corrosive, and toxic gases that must be removed to meet stringent environmental regulations, to protect power generation equipment and to control the emissions of contaminants. The thermodynamic behavior of 13 sorbents for the removal of HCI and H2S under various conditions including： initial toxic gas concentra- tion （1-10000 ppm）, operating pressure （0.1-11 Mpa）, temperature （300 K-1500 K）, and the presence of H2O were investigated. The correlation between HC1 and H2S was also examined. Thermodynamic calculations were carried out for the reactions of the 113 sorbents using a FaetSage 5.2 software package based on free energy minimization. The sorbents, Na2CO3, NaHCO3, K2CO3, and CaO are capable of completely removing chlorine at high temperatures （up to -1240 K） and at high pressures. Water vapor did not have any significant effects on the dechlorination capability of the sorbents. Nine of the sorbents namely; Cu20, Na2CO3, NaHCO3, K2CO3, CaO, ZnO, MnO, FeO, and PbO, were determined to have great potential as desulfurization sorbents. Cu2Oand ZnO had the best performance in terms of the optimum operating temperature. The addition of water vapor to the reactant gas produces a slightly detrimental effi^ct on most of the sorbents, but FeO exhibited the worst performance with a reduction in the maximum operating temperature of about 428K. The dechlorination performance of the alkali sorbents was not affected by the presence of H2S in the reactions. However, the desulfurization capability of some sorbents was greatly affected by the presence of HC1. Particularly, the performance of Cu2O was significantly reduced when HC1 was present, but the performance ofFeO improved remarkably. gather

关键词： syngas cleaning sorbent desulfurization,dechlorination

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：