Effect of Pre-oxidation and SO2 Modification on Mercury Removal Performance of High Sulfur Petroleum Coke in Simulated Natural Gas
A high sulfur petroleum coke(RPC)was selected as the raw material to make mercury adsorbent used in the simulated natural gas.The effect of pre-oxidation with air at set temperature and set time and sulfurization with 20%SO2 on mercury removal in simulated natural gas was studied.The experiments were carried out on a fixed-bed experimental device.The physicochemical properties of the sorbents were characterized by surface area and porosity analysis,elemental analysis and X-ray photoelectron spectroscopy(XPS).The results show that the mercury removal performance of the sulfur-loaded petroleum coke is greatly improved through carbonthermal reduction reaction.The optimum oxidation temperature of the SO2 activated petroleum coke is 300℃,and the Hg0 removal efficiency decreases with increase of the pre-oxidation time.The three main factors such as non-oxidative sulfur functional groups,carbonyl and ester sulfur functional groups,and pore structure greatly influence the mercury removal characteristics.The pre-oxidation time and temperature play an adjustable role for getting better performance of mercury removal.
High-sulfur petroleum coke Pre-oxidation SO2 modification Mercury adsorption Simulated natural gas
Qi-tuan YAN Ming-qing ZHU Jian LI Yu-feng DUAN Zhong-xi HAN Xiang ZHANG Shu-ying WANG Jia-lin MENG
Research Institute of Petroleum Exploration and Development,Beijing 100083,China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy an
国际会议
长沙
英文
287-294
2019-08-30（万方平台首次上网日期，不代表论文的发表时间）