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US-2016199807-A1 · Jul 14, 2016 · US
Method of producing regenerated hydrotreating catalyst and method of producing petroleum products
US9737881B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9737881-B2 |
| Application number | US-201113880477-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2011 |
| Priority date | Oct 22, 2010 |
| Publication date | Aug 22, 2017 |
| Grant date | Aug 22, 2017 |
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Abstract
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A method of producing a regenerated hydrotreating catalyst, including a first step of preparing a hydrotreating catalyst that has been used for hydrotreatment of a petroleum fraction and has a metal element selected from Group 6 elements of the periodic table; a second step of performing regeneration treatment for part of the catalyst prepared in the first step, then performing X-ray absorption fine structure analysis for the catalyst after the regeneration treatment, and obtaining regeneration treatment conditions in which a ratio IS/IO of a peak intensity IS of a peak attributed to a bond between the metal element and a sulfur atom to a peak intensity IO of a peak attributed to a bond between the metal element and an oxygen atom is in the range of 0.1 to 0.3 in a radial distribution curve obtained from an extended X-ray absorption fine structure spectrum.
First claim
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The invention claimed is: 1. A method of producing a regenerated hydrotreating catalyst, comprising: preparing a hydrotreating catalyst that has been used for hydrotreatment of a petroleum fraction and has a metal element selected from Group 6 elements of the periodic table; and then performing an initial regeneration treatment for part of the prepared hydrotreating catalyst, then performing X-ray absorption fine structure analysis for the catalyst after the regeneration treatment, and obtaining regeneration treatment conditions in which a ratio I S /I O of a peak intensity I S of a peak attributed to a bond between the metal element and a sulfur atom to a peak intensity I O of a peak attributed to a bond between the metal element and an oxygen atom is in the range of 0.1 to 0.3 in a radial distribution curve obtained from an extended X-ray absorption fine structure spectrum; and then performing another regeneration treatment under regeneration treatment conditions determined based on the results of the initial regeneration and subsequent X-ray absorption fine structure analysis, for another part of the catalyst. 2. The method of producing a regenerated hydrotreating catalyst according to claim 1 , wherein the metal element is molybdenum or tungsten. 3. The method of claim 1 , wherein the metal element selected from Group 6 elements of the periodic table is tungsten. 4. A method of producing a petroleum product, comprising performing hydrotreatment of a petroleum fraction using a regenerated hydrotreating catalyst produced by the production method according to claim 1 . 5. A method of producing a petroleum product, comprising performing hydrotreatment of a petroleum fraction using a regenerated hydrotreating catalyst produced by the production method according to claim 2 .
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in combination with chromium, molybdenum or tungsten metal, or compounds thereof · CPC title
Heat treatment · CPC title
in combination with chromium, molybdenum or tungsten metals, or compounds thereof · CPC title
in combination with chromium, molybdenum, or tungsten metals, or compounds thereof · CPC title
- B01J23/94Primary
of catalysts comprising metals, oxides or hydroxides of the iron group metals or copper · CPC title
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- What does patent US9737881B2 cover?
- A method of producing a regenerated hydrotreating catalyst, including a first step of preparing a hydrotreating catalyst that has been used for hydrotreatment of a petroleum fraction and has a metal element selected from Group 6 elements of the periodic table; a second step of performing regeneration treatment for part of the catalyst prepared in the first step, then performing X-ray absorption…
- Who is the assignee on this patent?
- Iwanami Yoshimu, Sano Takashi, Konishi Tomohiro, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification B01J23/94. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 22 2017 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).