碱木质素在超临界水中Ru/C纳米管催化气化的降解研究

王洪明; 庙荣荣; 杨勇; 乔玉辉; 张琼芳; 李春生; 黄江平

碱木质素在超临界水中Ru/C纳米管催化气化的降解研究

1.
昆明理工大学环境科学与工程学院, 云南昆明 650500;
2.
昆明焦化制气有限公司, 云南昆明 650500;
3.
昆明宝象炭黑有限责任公司, 云南昆明 650500

基金项目: 国家自然科学基金(201307049),云南省高端科技人才引进项目(2010CI110),云南重大科技专项(2012ZB002)和云南省大学生创新创业训练计划-褐煤超临界乙醇体系液化制油研究(201410674005)资助项目

详细信息

通讯作者:
庙荣荣,Tel:15925154573,E-mail:rr.de@hotmail.com.

中图分类号: TQ032.41
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出版历程
- 收稿日期: 2015-06-01
- 修回日期: 2015-07-16
- 刊出日期: 2015-10-31

Study on the catalytic gasification of alkali lignin over Ru/C nanotubes in supercritical water

1.
School of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
2.
Kunming Coking Gas Ltd, Kunming 650500, China;
3.
Kunming Baoxiang Carbon Black Co., Ltd, Kunming 650500, China

Funds: The project was supported by the National Natural Science Foundation of China (201307049), Yunnan Province, the Introduction of High-end Scientific and Technological Talents Project(2010CI110), Yunnan Major Science and Technology Projects(2012ZB002), Innovztion and Entrepeneurship Training Program for College Students in Yunnan Province about Research Lignite Liquefaction Oil Supercritical Ethanol System(201410674005).

摘要

摘要: 针对碱木质素难降解的特点,在间歇式反应器中,以Ru/C纳米管为催化剂,对碱木质素在超临界水中的气化进行研究。分别探讨了碱木质素在不同温度、水密度、反应时间、反应浓度、催化剂量的影响,并且分析了Ru/C纳米管催化剂的催化效率。通过单因素实验分析,确定了Ru/C纳米管催化剂催化气化碱木质素的最佳反应条件为,反应温度600 ℃、水密度0.128 4 g/cm³、反应时间60 min、反应质量分数3.0%、催化剂量0.5 g/g(碱木质素)。结果表明,碱木质素在超临界水气化过程中,高温、高水密度(或压力)、长反应时间、低反应物浓度及适量的催化剂将更有利于碱木质素的气化。在最佳反应条件下碱木质素的气化率和碳气化率分别达到73.74%和56.34%,且制氢能力也得到明显提高。
- 碱木质素 /
- 超临界水 /
- 气化率 /
- 碳气化率 /
- 气化反应
Abstract: Aiming at the refractory characteristics of alkali lignin, the study on the gasification of alkali lignin in supercritical water was carried out in a batch reactor with Ru/C nanotubes as the catalyst. The effect of temperature, water density, time, concentration of the reactant, catalyst amount on the gasification of alkali lignin was discussed, as well as the catalytic efficiency of the Ru/C catalyst nanotubes. The optimum conditions of the catalytic gasification of alkali lignin on the Ru/C nanotubes obtained with single factor analysis were the reaction temperature of 600 ℃, 0.128 4 g/cm³ water density, 60 min reaction time, 3.0% reactant concentration, catalyst amount of 0.5 g/g (alkali lignin). The results show that during the gasification process of alkali lignin in supercritical water, the high temperature, high water density (or pressure), long reaction time, low reactant concentration and right amount of catalyst will be in favor of the gasification reaction. The alkali lignin gasification efficiency and carbon gasification efficiency reached 73.74% and 56.34% under the optimal reaction conditions, and the hydrogen production capacity was also significantly improved.
- alkali lignin /
- supercritical water /
- gasification efficiency /
- carbon gasification efficiency /
- gasification reaction

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