深圳大学学报（理工版）2026，Vol.43Issue(1)：17-25,9.DOI:10.3724/SP.J.1249.2026.01017
HZSM-5分子筛吸附脱除乙苯装置原料苯中的碱性氮
Adsorption removal of basic nitrogen from benzene feedstock for ethylbenzene unit using HZSM-5 zeolite
摘要
Abstract
To solve the problem of excessive basic nitrogen compounds in the benzene feedstock of ethylbenzene unit,the adsorption performance of HZSM-5 zeolite,activated clay and waste fluid catalytic cracking catalyst as absorbents was systematically investigated.The structural features,morphological characteristics,and physicochemical properties of the adsorbents were characterized by a combination of analytical techniques,including X-ray diffraction(XRD),scanning electron microscopy(SEM),low-temperature nitrogen adsorption-desorption,and ammonia temperature-programmed desorption(NH3-TPD).The correlation between the adsorption performance and material structure was also established.Results show that HZSM-5 zeolite exhibits highest adsorption capacity and removal efficiency for basic nitrogen.After treatment with HZSM-5 zeolite,the residual basic nitrogen concentration in the raw benzene feedstock was reduced to 0.08 mg/kg,meeting the industrial specification.The structure-activity relationship analyses reveal that the adsorption performance is positively correlated with the specific surface area of the adsorbent,while acidity is not the dominant influencing factor.Breakthrough experiments confirm that the adsorption kinetics follow the Boltzmann model.This research aligns with the trends of green chemistry and sustainable development,demonstrates good potential for industrial application,and provides new insights for adsorbent design.关键词
吸附材料/乙苯装置/碱性氮/HZSM-5分子筛/穿透实验/吸附动力学Key words
adsorbent/ethylbenzene unit/basic nitrogen/HZSM-5 zeolite/breakthrough experiment/adsorption kinetics分类
能源科技引用本文复制引用
周裕江,刘瑞腾,王欣茹,张阳,陈秀玲,邓益强..HZSM-5分子筛吸附脱除乙苯装置原料苯中的碱性氮[J].深圳大学学报（理工版）,2026,43(1):17-25,9.基金项目
National Natural Science Foundation of China(22378102) （22378102）
Guangdong Provincial Science and Technology Innovation Strategy Special Project(2022DZXHT021) （2022DZXHT021）
Maoming Science and Technology Special Project(2022S049) 国家自然科学基金资助项目(22378102) （2022S049）
广东省科技创新战略专项资助项目(2022DZXHT021) （2022DZXHT021）
茂名市科技专项资助项目(2022S049) （2022S049）
