Novel Short Process for p-Xylene Production Based on the Selectivity Intensification of Toluene Methylation with Methanol

doi:10.1021/acsomega.1c05817

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Novel Short Process for p-Xylene Production Based on the Selectivity Intensification of Toluene Methylation with Methanol
	Li, Guixian 1,2; Yang, Yong 1,2; Wang, Dongliang 1,2; Zhang, Junqiang 1,2; Dong, Peng 1,2; Fan, Xueying 3
刊名	ACS OMEGA
	2021
ISSN号	2470-1343
DOI	10.1021/acsomega.1c05817
英文摘要	Toluene methylation using methanol offers a high potential molecular engineering process to produce p-xylene (PX) based on shape-selective catalysts. To further improve the process economics, a novel short process was proposed by reducing the high-energy consumption separation of xylene isomers in existing processes since the PX selectivity of the xylene isomers can be enhanced more than the industrial product quality of 99.7%. The PX selectivity intensification was achieved as a result of decreased contact time by considering factors such as the feed ratio, diluents, temperature, and pressure in a toluene methylation reactor. This proposed short process indicated that the reactor effluent could be purified only through the two conventional distillation towers by removing the methanol recovery and separation of xylene isomers. The raw material utilization, energy consumption, and economic data were also analyzed for the six contrastive cases. The short process using catalyst Si-Mg-P-La/ZSM-5 exhibited the highest effective utilization rates of 96.27 and 95.50% for toluene and methanol, respectively. The short process also showed a good economic value in terms of capital investment and operating costs due to the multistage reactor without benzene byproducts. Thus, the obtained total annual cost (TAC) value of 13 848.1 k$.year(-1) was 68.9 and 87.9% of the two existing processes.
WOS研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000739880500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154925]
专题	石油化工学院
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Key Lab Low Carbon Energy & Chem Engn Gansu Prov, Lanzhou 730050, Gansu, Peoples R China; 3.PetroChina Lanzhou Petrochem Co, Automat Inst, Lanzhou 730060, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Li, Guixian,Yang, Yong,Wang, Dongliang,et al. Novel Short Process for p-Xylene Production Based on the Selectivity Intensification of Toluene Methylation with Methanol[J]. ACS OMEGA,2021.
APA	Li, Guixian,Yang, Yong,Wang, Dongliang,Zhang, Junqiang,Dong, Peng,&Fan, Xueying.(2021).Novel Short Process for p-Xylene Production Based on the Selectivity Intensification of Toluene Methylation with Methanol.ACS OMEGA.
MLA	Li, Guixian,et al."Novel Short Process for p-Xylene Production Based on the Selectivity Intensification of Toluene Methylation with Methanol".ACS OMEGA (2021).