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Use of phosphorus modified molecular sieves in conversion of organics to olefins
US9035120B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9035120-B2 |
| Application number | US-67122008-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 28, 2008 |
| Priority date | Jul 31, 2007 |
| Publication date | May 19, 2015 |
| Grant date | May 19, 2015 |
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Abstract
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A method of making light olefins in a combined XTO (organics to olefins) and OCP (olefins cracking) process, from an oxygen-containing, halogenide-containing, or sulphur-containing organic feedstock contacted with a catalyst in a first reactor to convert the feedstock into a reactor effluent comprising light olefins and a heavy hydrocarbon fraction; separating the light olefins from the heavy hydrocarbon fraction, then contacting the heavy hydrocarbon fraction in a second reactor with a catalyst to convert a portion of the heavy hydrocarbons into light olefins; wherein the catalyst is a zeolite selected among a H + or NH 4 + —form of MFI, MEL, FER, MOR, or clinoptilolite; modifying the zeolite by adding from 0.05 to 7 wt % of phosphorous to the zeolite, and an optional washing and/or drying in either order, then calcination. In an embodiment, the initial zeolite Si:Al atomic ratio of at least one catalyst is 100 or less.
First claim
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The invention claimed is: 1. A process of making light olefins from an oxygen containing, halogenide containing or sulphur containing organic feedstock, comprising: selecting a zeolite in the H + or NH 4 + form that has an initial Si:Al atomic ratio of 100 or less, wherein the zeolite is an MFI or MEL; steaming the zeolite at a temperature ranging from 480° C. to 760° C. for 0.01-200 hours; after steaming, leaching the zeolite with an aqueous acid solution at conditions ef…
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Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
- C07C1/20Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US9035120B2 cover?
- A method of making light olefins in a combined XTO (organics to olefins) and OCP (olefins cracking) process, from an oxygen-containing, halogenide-containing, or sulphur-containing organic feedstock contacted with a catalyst in a first reactor to convert the feedstock into a reactor effluent comprising light olefins and a heavy hydrocarbon fraction; separating the light olefins from the heavy h…
- Who is the assignee on this patent?
- Nesterenko Nikolai, Vermeiren Walter, Minoux Delphine, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07C1/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 19 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).