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Diesel oil oxidation sweetening method

A technology for oxidative desulfurization and diesel oil, which is only applied in the direction of multi-stage serial refining process, etc., and can solve the problems of gasoline production methods that cannot produce diesel oil, increased ether content, and different index requirements.

Active Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alkoxylation catalyst described in this patent can use an acidic ion exchange resin, but the main function of the resin is alkoxylation catalysis, which greatly increases the ether content in the product, and the promotion effect on desulfurization is not very obvious
In addition, the index requirements of gasoline and diesel are completely different, and the production method of gasoline cannot be simply used in the production process of diesel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0014] The preparation step of inorganic solid catalyst of the present invention comprises:

[0015] (1) The precursor of the alumina carrier is molded, dried, and calcined at 450-650°C for 1-6 hours in the presence of air to obtain the alumina carrier.

[0016] (2) Impregnate the alumina carrier obtained in step (1) with the aqueous solution of the VIB and VIII metal compounds, dry at 100-120°C for 4-8 hours, and then calcinate at 400-550°C for 4-8 hours to obtain this Inorganic catalysts invented.

[0017] Wherein said Group VIB and the consumption of Group VIII metal compound should make the content of the Group VIB metal oxide in the final inorganic catalyst be 15~35%, preferably 20~30%; The content of Group VIII metal oxide 1-8%, preferably 2-5%.

[0018] The impregnation may adopt a general impregnation method, preferably a saturated impregnation method.

[0019] The VIB group metal compound is preferably a compound containing molybdenum and / or tungsten, and the group...

Embodiment 1

[0022] This embodiment illustrates the preparation of the inorganic catalyst carrier of the present invention

[0023] Weigh 1000 grams of aluminum hydroxide powder (dry basis 70% (m / m), produced by Shandong Aluminum Factory), add 1-5% extrusion aid and appropriate amount of water, fully knead evenly, and extrude into Φ1.5mm strips, Dry at 120° C. for 4 hours, bake at 600° C. for 4 hours, and cut the obtained strip-shaped carrier into about 5 mm to obtain a γ-alumina carrier.

Embodiment 2～8

[0025] The following examples illustrate the inorganic catalyst provided by the invention and its preparation

[0026] Weigh quantitative nickel nitrate [Ni(NO 3 ) 2 ·6H 2 O] and ammonium molybdate [(NH 4 ) 6 m O7 o 24 4H 2 O] or ammonium metatungstate aqueous solution (referred to as AMT solution, the concentration is 56gWO 3 / 100ml solution) after mixing, add deionized water to make 100 milliliters of aqueous solution containing nickel nitrate and ammonium molybdate or ammonium metatungstate, respectively use the above prepared solution to impregnate 150 grams of gamma-alumina carrier for 4 hours, 120 ℃ drying for 4 hours, 450 ℃ roasting for 4 hours, the amount of materials used is listed in Table 1.

[0027] Example number

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Abstract

The invention discloses the method of diesel oil oxidation sweetening. The diesel oil and oxidant are reacted on the built catalyst when there is extractant. The built catalyst comprises the inorganic solid catalyst and strong acidic resin, whose proportion by weight is 10í†1-3í†1. The method is used for diesel oil desulfurizing process. In the method, the sulfur-containing organics are effectively oxygenized to become polar substance which is removed by separating. Comprared with now desalination technique, the said technology is mild, low cost and meets the marked demand of low-sulfur diesel oil.

Description

technical field [0001] The invention relates to a method for oxidative desulfurization of diesel oil, in particular to a method for oxidative desulfurization of diesel oil with a composite solid catalyst. Background technique [0002] With the improvement of people's awareness of environmental protection, the problem of vehicle exhaust pollution has been paid more and more attention. More stringent requirements have been put forward for diesel locomotive fuel oil. Europe, the United States, Japan and China have successively proposed new domestic diesel standards. The new standards are mainly reflected in a more reasonable composition. become a major target. [0003] As we all know, the usual way to reduce the sulfur and nitrogen content of diesel is to use hydrodesulfurization and denitrification technology. However, there are some deficiencies in the method of hydrotreating, such as large investment and high operating costs, and it is difficult to remove organic sulfur of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/14
Inventor 方向晨宋丽芝王海波矫德卫侯学伟勾连科
Owner CHINA PETROLEUM & CHEM CORP
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