| 主权项 |
1. A process for converting a hydrocarbon feedstock into olefins and BTX, said converting process comprising the following steps of:
feeding a hydrocarbon feedstock to a first hydrocracking unit; feeding effluent from said first hydrocracking unit to a first separation section; separating said effluent in said first separation section into one or more streams from the group including a stream comprising hydrogen, a stream comprising methane, a stream comprising ethane, a stream comprising propane, a stream comprising butanes, a stream comprising C1-minus, a stream comprising C2-minus, a stream comprising C3-minus, a stream comprising C4-minus, a stream comprising C1-C2, a stream comprising C1-C3, a stream comprising C1-C4, a stream comprising C2-C3, a stream comprising C2-C4, a stream comprising C3-C4 and a stream comprising C5+; feeding at least one stream chosen from the group including said stream comprising propane, said stream comprising butanes, said a stream comprising C3-minus, said stream comprising C4-minus, said stream comprising C2-C3, said stream comprising C1-C3, said stream comprising C1-C4, said stream comprising C2-C3, said stream comprising C2-C4 and said stream comprising C3-C4 to at least one dehydrogenation unit chosen from the group including a butanes dehydrogenation unit, a propane dehydrogenation unit, a combined propane-butanes dehydrogenation unit, or a combination of units thereof: feeding from said first separation section at least one stream from the group including said stream comprising ethane, said stream comprising C1-C2 and said stream comprising C2-minus to a steam cracking unit and/or a second separation section; and feeding the effluent(s) from said steam cracking unit and at least one dehydrogenation unit to said second separation section. |
