Methods for producing ethylene and propylene from naphtha
USRE50515E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2022 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Feb 2, 2042 |
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-%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.