Methods for producing ethylene and propylene from naphtha

US10519384B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Nabil Al-Yassir · Riyadh, SA
• Mohammed Abdul Bari Siddiqui · Dhahran, SA
• Mian Rahat Saeed · Dhahran, SA
• Abdullah M. Aitani · Al Khobar, SA
• Sulaiman Saleh Al-Khattaf · Dhahran, SA
• Ahmed S. Alzenaidi · Riyadh, SA
• Vidya Sagar Guggilla · Bengaluru, IN

Key dates

• Filing date: Dec 13, 2016
• Grant date: Dec 31, 2019
• Expiry date: Dec 13, 2036

Classification

• Technology area (CPC —): General

Abstract

The presently disclosed subject matter relates to methods of producing ethylene and propylene by the catalytic steam cracking of naphtha using an HZSM-5 catalyst. An example method can include providing a naphtha feedstock, providing steam, and providing an HZSM-5 catalyst. The method can further include preparing the HZSM-5 catalyst by titanium modification or alkaline treatment, followed by phosphorus modification. The method can further include feeding the naphtha feedstock and steam to a reactor containing the catalyst and removing an effluent from the reactor having a combined yield of ethylene and propylene of greater than about 45 wt-%.