Selective mercaptan removal method
A sweetening and selective technology, applied in the field of sweetening, can solve the problems of gasoline octane number loss, reduce the total sulfur content of oil products, and high olefin saturation rate, and achieve high removal rate of total sulfur and mercaptan sulfur, sulfur The effect of high selectivity for alcohol removal
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0021] According to a preferred embodiment of the present invention, the supported sulfided metal hydrogenation catalyst includes a first carrier and an active component A and an active metal component B supported on the first carrier, and the active metal component A is selected from From at least one of Group VIII metal elements, the active metal component B is selected from at least one of Group VIB metal elements.
[0022] According to the present invention, preferably, the active component A is Co and / or Ni, and the active component B is Mo and / or W. In this preferred situation, the activated sulfided metal hydrogenation catalyst has higher mercaptan removal selectivity.
[0023] In the present invention, the atomic ratio of active metal component A to the sum of active metal component A and active metal component B can be determined by X-ray fluorescence method.
[0024] In the present invention, the selection range of the atomic ratio of the active metal component A to...
Embodiment approach A
[0082] According to a preferred embodiment A of the present invention, in the method for selective sweetening,
[0083] Step (1) comprises step (1-1) and step (1-2);
[0084] The step (1-1) includes: under the first sweetening condition, first contacting the oil product with a supported sulfided metal hydrogenation catalyst and / or a supported nickel-based catalyst;
[0085] The step (1-2) includes: under the second sweetening condition, second contacting the stream obtained by the first contact with the supported zinc-containing catalyst to obtain the first stream. In this preferred embodiment, the catalyst in this combination shows higher stability.
[0086] According to the preferred embodiment A of the present invention, the catalyst used in step (1-1) can be a supported sulfided metal hydrogenation catalyst or a supported nickel-based catalyst, or a supported sulfided metal hydrogenation catalyst and a supported The mixture of nickel-based catalysts can achieve the purpo...
Embodiment approach B
[0089] According to a preferred embodiment B of the present invention, in the method for selective sweetening,
[0090] Step (1) comprises step (1-A) and step (1-B);
[0091] The step (1-A) comprises: under the third demercaptan condition, the oil product is subjected to a third contact with a mixed catalyst containing a supported sulfided metal hydrogenation catalyst and a supported zinc-containing catalyst;
[0092] Step (1-B) includes: under the fourth sweetening condition, the stream obtained from the third contact is subjected to a fourth contact with a supported nickel-based catalyst and optionally a supported zinc-containing catalyst to obtain the first logistics. In this preferred embodiment, the catalyst in this combination mode has higher mercaptan selectivity, and the sulfur content in the obtained product is lower.
[0093] In the mixed catalyst containing the supported sulfided metal hydrogenation catalyst and the supported zinc-containing catalyst described in ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More