Kinetic analysis of vacuum residue hydrocracking in early reaction stages

被引：42

作者：

Puron, H. ^{[1
]}

Arcelus-Arrillaga, P. ^{[1
]}

Chin, K. K. ^{[1
]}

Pinilla, J. L. ^{[1
]}

Fidalgo, B. ^{[1
]}

Millan, M. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

来源：

FUEL | 2014年 / 117卷

关键词：

Hydrocracking; Vacuum residue; Batch reactor; Lumped kinetic model; Coke deposits; INITIAL COKE DEPOSITION; HYDROTREATING CATALYSTS; HEAVY OILS; MILD HYDROCRACKING; GAS OIL; BITUMEN; DEACTIVATION; MODEL; SPECTROSCOPY; TIME;

D O I：

10.1016/j.fuel.2013.09.053

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this work, a lumped kinetic model for the hydrocracking of vacuum residue (VR) from Maya crude oil was developed. A preliminary kinetic analysis based on the conversion of VR was performed. Next, ten models with increasing level of complexity were proposed and solved sequentially using Matlab (R) software. All models included four lumps: products with boiling point >450 degrees C (L+), products with boiling point <450 degrees C (L-), gas and coke. Kinetic parameters were estimated from the experimental data obtained in a microbomb batch reactor at three temperatures (400, 425 and 450 degrees C) and four holding times (10, 30, 60 and 90 min). Two catalysts, NiMo/Al2O3 and NiMo/Al2O3-Cr (alumina doped with chromium), were tested. Kinetic results showed that gas was mainly produced from the decomposition of L- at low temperatures, whereas at 450 degrees C gas is predominantly formed from cracking of L+. Moreover, coke was found to be exclusively produced from L+ at all temperatures. In general, NiMo/Al2O3 gave rise to higher yields of L- than NiMo/Al2O3-Cr. Nevertheless, NiMo/Al2O3-Cr was able to retain greater activity at higher temperatures. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：408 / 414

页数：7

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