Aromatic adsorption desulfurizing method

A technology for adsorption desulfurization and aromatic hydrocarbons, which is used in absorption purification/separation, organic chemistry, etc., to achieve the effect of less investment and simple process

Inactive Publication Date: 2003-04-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the inventors know, there is no report of using amorphous nickel as an adsorbent for adsorption desulfurization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This example illustrates the preparation of an amorphous adsorbent useful in the present invention.

[0017] Add 48 grams of nickel, 48 grams of aluminum, 1.5 grams of iron, and 2.5 grams of chromium into the quartz tube, heat it in a high-frequency furnace to above 1300 ° C to melt, and alloy it, and then use inert gas to remove the alloy liquid from The nozzle under the quartz tube is sprayed onto a copper roller with a rotating speed of 800 rpm. Cooling water is passed through the copper roller. After rapid cooling, the alloy liquid is thrown out along the tangent of the copper roller to form scale-like strips. After grinding to a particle diameter of less than 70 microns, a master alloy is obtained. The master alloy is heat treated in a hydrogen environment, the heat treatment temperature is 700° C., and the constant temperature time is 3 hours. The heat-treated master alloy was slowly added into a three-neck flask filled with 500 g of 20% sodium hydroxide aqueous ...

Embodiment 2～4

[0019] These examples illustrate the preparation of several adsorbents useful in the present invention.

[0020] The amorphous alloy adsorbent used in the present invention was prepared according to the steps of Example 1, except that the components and contents were different. The compositions of the prepared Adsorbent-2 to Adsorbent-4 are listed in Table 1.

[0021] The adsorbent composition of table 1 embodiment 1~4

Embodiment

[0022] Example number Sorbent number Sorbent composition

[0023] 1 Adsorbent-1 Ni 83.5 Fe 2.6 Cr 4.3 Al 9.6

[0024] 2 Adsorbent-2 Ni 86.7 co 8.3 Al 5.0

[0025] 3 Adsorbent-3 Ni 90.1 Mo 3.2 Al 6.7

[0026] 4 Adsorbent-4 Ni 58.4 Fe 32.3 Al 9.3

[0027] In the X-ray diffraction patterns of Adsorbents-1, -2, -3 and -4, only one broad diffuse peak (steamed bread-like diffuse scattering peak) appears at 45±1° in the range of 2θ of 20-80° .

[0028] The following Examples 5-16 illustrate the results of carrying out the process of the present invention using a fluidized bed.

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Abstract

An adsorption process for desulfurizing the C6-C11 arylhydrocarbon features that said arylhydrocarbon is contacted with an amorphous alloy adsorbent whose main active component is Ni the the fluidzed-bed or slurry bed reactor at ordinary temp-12 deg.C and ordinary pressure-1 MPa. It can reduce the sulfur content to less than 0.05 ppm.

Description

technical field [0001] The present invention relates to a C 6 -C 11 Adsorptive desulfurization method of aromatic hydrocarbons. Background technique [0002] Aromatics such as benzene, toluene, ethylbenzene, xylene, and aromatics above C9 obtained during petroleum refining and coal coking also contain a small amount of organic sulfides such as mercaptans, sulfides, thiophenes, alkylthiophenes, and benzothiophenes Wait. The presence of these organic sulfides affects the quality of aromatics and has a detrimental effect on their utilization. As in the partial hydrogenation of benzene to cyclohexene, the sulfur in the raw material benzene will cause the metal ruthenium hydrogenation catalyst to deactivate; C 9 or C 10 When aromatic hydrocarbons are used as working solvents for the production of hydrogen peroxide by the anthraquinone method, the sulfur in them will cause the deactivation of the hydrogenation catalyst. [0003] Adsorption desulfurization has the characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C7/11C07C15/00
Inventor 孟祥堃宗保宁林海龙张晓昕慕旭宏闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
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