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Preparation method of modified activated carbon adsorption desulfurizing agent

A technology of activated carbon adsorption and desulfurization agent, applied in chemical instruments and methods, refined hydrocarbon oil, petroleum industry, etc., can solve the problem of low sulfide adsorption capacity, achieve good removal performance, maintain oil performance, and good safety Effect

Inactive Publication Date: 2010-08-18
SHANGHAI RES INST OF CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] U.S. Patent No. 5,454,933 discloses a method for adsorption and desulfurization of distillate oil. It uses a solid adsorbent to adsorb the difficult-to-remove sulfide in the hydrodesulfurized middle distillate oil. The adsorbent used is carbonized by coal or other materials. and oxidation treatment, but the adsorption capacity of the adsorbent for sulfide is low, only 0.12g sulfide / g adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Desulfurization agent preparation

[0027] The modified active carbon absorbs the desulfurizer, the oxidant is nitric acid with a concentration of 65wt%, the active component is Cu element, and the content of CuO accounts for 5% of the weight of the active carbon. The preparation method is as follows: put coconut shell activated carbon with a particle size of 40 mesh into a conical flask, then add 65wt% nitric acid, leave it to oxidize at room temperature for 12 hours, fully wash with deionized water, suction filter, and dry at 110°C for 12 hours , to obtain oxidatively modified activated carbon. The oxidation-modified activated carbon was impregnated with Cu(NO 3 ) 2 In the solution, the content of CuO accounts for 5% of the weight of the activated carbon. Place it at room temperature for 24 hours, then dry it at 110°C for 12 hours, and finally bake it at 350°C for 3 hours to obtain the desulfurizer.

[0028] Desulfurization performance test

[0029] Add 0.4 g of c...

Embodiment 2

[0031] The oxidant used for the preparation of the desulfurizing agent was sulfuric acid with a concentration of 98 wt%, and was oxidized with sulfuric acid for 12 hours at room temperature.

Embodiment 3

[0033] The desulfurizer was prepared by using phosphoric acid with a concentration of 85wt% as the oxidizing agent, which was oxidized with phosphoric acid for 12 hours at room temperature. The rest of the preparation steps and desulfurization performance test were in accordance with Example 1. The test results are shown in Table 1.

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PUM

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Abstract

The invention relates to a preparation method of a modified activated carbon adsorption desulfurizing agent. Cocoa nut activated charcoal serves as a carrier; oxidant, such as concentrated nitric acid, concentrated sulfuric acid or ammonium sulphate and the like, is added for modification; active components, such as copper, silver, nipple, cerium and the like are loaded; the metallic oxide content of active components accounts for 1-20 wt% of activated carbon; the mixture is dried to obtain desulfurizing agent. Compared with the prior art, the preparation method has the characteristics of large sulfur adsorption capacity, high desulfurization precision, convenient reproduction and the like, and can be widely applied to producing ultra clean fuel oil in the petrochemical industry field.

Description

technical field [0001] The invention relates to a preparation method of a desulfurizer, in particular to a preparation method of a modified activated carbon adsorption desulfurizer. Background technique [0002] With the increasingly stringent environmental regulations, the world's Class III and Class IV standards for gasoline and diesel sulfur content have reached 30ppm and 5-10ppm. By 2010, the sulfur content of gasoline and diesel in Europe will also be reduced to 10ppm. Therefore, it is of great significance to develop efficient and economical fuel oil deep and ultra-deep desulfurization technology to achieve low-sulfur and non-sulfur fuel quality standards as soon as possible. [0003] According to research, 80% of my country's gasoline comes from FCC gasoline, about 85% of the sulfur-containing organic compounds in gasoline come from FCC gasoline, and more than 90% of the sulfur compounds in FCC gasoline are thiophene sulfur and its derivatives; thiophenes in diesel S...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/32C10G25/06
Inventor 裴玉同罗勇李美华宋家龙
Owner SHANGHAI RES INST OF CHEM IND
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