热力发电2017，Vol.46Issue(9)：124-129,6.DOI:10.3969/j.issn.1002-3364.2017.09.124
共沉淀法掺杂离子氧化钙吸收剂脱硫反应机理
Desulfurization mechanisms of ions diffusion of synthetic CaO sorbents using co-precipitation method
王林 1高继慧 2车宏伟 1井新径 1李阳 1罗志1
作者信息
- 1. 西安热工研究院有限公司,陕西 西安 710054
- 2. 哈尔滨工业大学能源科学与工程学院,黑龙江 哈尔滨 150001
- 折叠
摘要
Abstract
By co-precipitation method, CaO sorbents in which Ca2+ and hetero-ion (with different radius) were mixed in the crystalline lattice were prepared.The effect of hetero-ion type on desulfurization reaction was studied. On the basis of the vacancy defect theory in solid-state ions diffusion, the comprehensive rules about ion-doping promoting ion diffusion in sulfated product layer were obtained. The Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometer were used to analyze the desulfurization performance of each sample. The result show that, the samples mixed with Ba2+ has the best desulphurization performance, while that with Mg2+ has the worst. The dopant ions were successfully mixed with Ca2+ at atom level. The dopant ions brought in lattice distortion. It concluded that the dopant ions which have a larger radius can increase the number of space point defects and improve the desulfurization ability of the sample, but the smaller radius dopant ions have no positive effect.关键词
共沉淀法/离子掺杂/氧化钙吸收剂/脱硫/空位缺陷/固态离子扩散/脱硫性能Key words
co-precipitation method/ion doping/CaO absorbent/desulfurization/vacancy defect/solid-state ions diffusion/desulfurizaiton performance分类
能源科技引用本文复制引用
王林,高继慧,车宏伟,井新径,李阳,罗志..共沉淀法掺杂离子氧化钙吸收剂脱硫反应机理[J].热力发电,2017,46(9):124-129,6.
