US 12,241,029 B2
Process for the conversion of petroleum to light olefins utilizing a pretreatment complex and steam enhanced catalytic cracker
Aaron Chi Akah, Dhahran (SA); Qi Xu, Dhahran (SA); Musaed Salem Al-Ghrami, Dammam (SA); and Zhonglin Zhang, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jul. 15, 2022, as Appl. No. 17/865,823.
Prior Publication US 2024/0018428 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 69/06 (2006.01); B01D 3/06 (2006.01); B01J 19/24 (2006.01); C10J 3/82 (2006.01)
CPC C10G 69/06 (2013.01) [B01D 3/06 (2013.01); B01J 19/245 (2013.01); C10J 3/82 (2013.01); B01J 2219/0004 (2013.01); C10G 2300/206 (2013.01); C10G 2300/308 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2400/20 (2013.01); C10G 2400/30 (2013.01); C10J 2300/1603 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A process for the conversion of a petroleum feed to light olefins, the process comprising:
pretreating the petroleum feed to form one or more pretreated petroleum feeds;
fractionating the one or more pretreated petroleum feeds to form a methane stream, an ethane stream, a C3-C4 stream, a light liquid fraction and a heavy liquid fraction;
methane cracking the methane stream to form hydrogen;
steam cracking the ethane stream to form a steam cracking product;
dehydrogenating the C3-C4 stream to form a dehydrogenated stream;
steam enhanced catalytic cracking (SECC) the light liquid fraction in a first steam enhanced catalytic cracker to form a light liquid SECC product; and
steam enhanced catalytic cracking the heavy liquid fraction in a second steam enhanced catalytic cracker to form a heavy liquid SECC product, and wherein
a first steam to feed ratio of the first steam enhanced catalytic cracker is less than a second steam to feed ratio of the second steam enhanced catalytic cracker,
the first steam to feed ratio is from 0.2 to 0.8, and
the second steam to feed ratio is from 0.8 to 1.0.