000			01747nab a2200205 4500
005			20260520001753.0
008			260224s2009 xxu
245	0	0	_aSeparating group compositions in naphtha by adsorption and solvent extraction to improve olefin yields of steam cracking process
260			_a _b _cjun. 2009
270			_a14/06/2010 ; 10/06/2010
300			_a5 p. ; 156-160
520			_aTranscripción del resumen del autor. In order to improve the steam cracking feeds, several model compounds including normal paraffins, isoparaffins, cyclanes and aromatics were selected as the feeds of steam cracking process and the olefin yields were investigated. In the typical reaction conditions, the normal paraffins in the naphtha contribute most to the ethylene in the products; the iso-paraffins are the main sources of the propylene; the cyclanes mainly produce the butadiene and the aromatics can hardly produce olefins. According to this, the adsorption process and solvent extraction process were adopted to separate the group compositions in naphtha properly to optimize the cracking feeds. The n-paraffins in naphtha were gathered through adsorption process using 5A molecular sieves. The ethylene yield improved by 13% using the desorption oil rich in n-paraffins as the cracking feed. The aromatics and the cyclanes were extracted from the naphtha. Compared with the naphtha, the ethylene and propylene yields of the extraction raffinate oil were 3.0 and 1.5% higher respectively.
581			_a3-4
773	0		_tJournal of Petroleum Science & Engineering _g66
942			_cARTICULO
100	1		_aLiu, Ji-Chang _941652
100	1		_aShen, Ben-Xian _941653
100	1		_aWang, Da-qi _942532
999			_c170917 _d170917