燃料化学学报2018，Vol.46Issue(5)：633-640,8.
低温一步法活性炭基脱硫剂的制备与评价
Preparation and evaluation of activated carbon-based desulfurization adsorbent by one-step method at low temperature
唐晓东 1陆海 2李晶晶 1周淼 2胡娜2
作者信息
- 1. 西南石油大学 油气藏地质及开发工程国家重点实验室,四川 成都 610500
- 2. 西南石油大学 化学化工学院,四川 成都 610500
- 折叠
摘要
Abstract
Activated carbon was prepared by one-step method at low temperature using sawdust as material. Effect of preparation and adsorption conditions among liquid-solid and gas-solid on desulfurization performance was discussed. The results show that the optimum preparation conditions are as follows: mass ratio of 1:1 for impregnation liquid (with HNO3mass fraction of 30%) and sawdust, NiO loading of 5% on surface of adsorbent,impregnation time of 24 h under room temperature and calcination time of 3 h under 400℃. Under adsorbent mass/DBT volume of 0.2 g/10 mL, liquid-solid adsorption temperature of 40℃ and adsorption time of 5 h, desulfurization efficiency can reach 28.36%. After continuous adsorption 4 times saturated adsorption sulfur capacity is up to 2.34 mgS/g. Under gas-solid adsorption temperature of 250℃ and adsorption velocity of 6.3 h-1,adsorption sulfur capacity can reach 2.37 mgS/g. The effect of high temperature gas-solid adsorption desulfurization on adsorbent indicates that BET specific surface area,total pore volume and micropore volume of adsorbent have been improved obviously, which show that the gas-solid adsorption desulfurization process has realized the reaming activation of activated carbon simultaneously. The regeneration experiment of toluene solvent shows that the regeneration performance can reach more than 90% after 5 times cycle.关键词
吸附剂/制备/二苯并噻吩/吸附/脱硫Key words
adsorbent/preparation/dibenzothiophene/adsorption/desulfurization分类
能源科技引用本文复制引用
唐晓东,陆海,李晶晶,周淼,胡娜..低温一步法活性炭基脱硫剂的制备与评价[J].燃料化学学报,2018,46(5):633-640,8.
