文献类型：期刊文献

英文题名：Inhibitory effect of MnCr2O4 spinel coating on coke formation during light naphtha thermal cracking

作者：Bao, Binbin[1];Liu, Jinglei[1];Xu, Hong[1];Liu, Bo[1];Zhang, Weifeng[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：6

期号：73

起止页码：68934

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20163102675241);WOS:【SCI-EXPANDED(收录号:WOS:000381512600041)】；

基金：This work is supported by Research Fund for the Doctoral Program of Higher Education of China (20110074110009) and Sinopec Corp., China.

语种：英文

外文关键词：Coke - Thermooxidation - Cracks - Naphthas - Amorphous carbon - Chromium alloys

摘要：In this paper, MnCr2O4 spinel coating was fabricated on a HP40 alloy by pack cementation and subsequent thermal oxidation. The spinel coating was dense and uniform, and was applied to inhibit coke formation during light naphtha thermal cracking. Coking behaviors on the HP40 alloy and spinel coated alloy were compared under the same conditions. The anti-coking rate of the MnCr2O4 spinel coating exceeded 60% during light naphtha thermal cracking. Lots of filamentous coke formed on the uncoated HP40 alloy, but catalytic coke was completely inhibited on the MnCr2O4 spinel coated alloy resulting in a granular appearance of coke. Raman spectra analyses indicated that coke deposited on the surface of the spinel coating had a larger proportion of disordered carbon and amorphous carbon compared with that on the uncoated HP40 alloy.