Deep removal of sulfur and aromatics from diesel through two-stage concurrently and countercurrently operated fixed-bed reactors

Autor:	Lei Huang, Zhen-Min Cheng, Ronghui Zeng, Fang Xiangchen, Han Baoping, Wei-Kang Yuan
Rok vydání:	2004
Předmět:	Chromatography Countercurrent exchange Fixed bed Applied Mathematics General Chemical Engineering Analytical chemistry chemistry.chemical_element General Chemistry Sulfur Nitrogen Industrial and Manufacturing Engineering Concurrent flow Diesel fuel chemistry Stage (hydrology)
Zdroj:	Chemical Engineering Science. 59:5465-5472
ISSN:	0009-2509
DOI:	10.1016/j.ces.2004.09.036
Popis:	A two-stage concurrently and countercurrently operated fixed-bed reactors were investigated to remove sulpfur and aromatics in producing ultra-clean diesel fuel. Under similar operating conditions, the sulfur concentration in the produced oil through countercurrent operation is much less than under concurrent flow. In a typical run with countercurrent flow at 6.0 MPa and 360 °C, the sulpfur content could be removed from 13,841 to 5.7 μ g / g with nitrogen from 457 to 1.8 μ g / g and the total aromatics from 41.4% to 26%. One-dimensional heterogeneous model was established to simulate the distribution of all the components involved along the reactor length in the gas and liquid phases, which revealed that the low H2S concentration at the reactor exit region under countercurrent flow is critical to the ultra low sulphur extent in the produced oil.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c2be0ec51b1f2a17dc1e1ed2b6260b75 https://doi.org/10.1016/j.ces.2004.09.036 Zobrazit plný text záznamu Full Text from ScienceDirect