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Method for preparing gasoline desulfurization adsorbent

A technology of adsorbent and gasoline, which is applied to the preparation of gasoline activated carbon desulfurization adsorbent, the gasoline desulfurization adsorbent loaded with transition metal oxides on modified activated carbon base and its preparation, and the preparation field of gasoline adsorbent, which can solve the problem of small adsorption capacity. , less research, low cost and other issues, to achieve the effect of large adsorption capacity, simple process and high desulfurization rate

Active Publication Date: 2011-04-27
临沂星火知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Activated carbon is cheap, low in cost, and has good adsorption capacity for sulfides such as inorganic sulfur, mercaptan, sulfide, thiophene and its alkyl derivatives, so it has a good development prospect. There are still relatively few researches, and the active components are limited to one kind of precious metal or metal oxide, the desulfurization rate is not high, and the adsorption capacity is small, but the effect on deep removal of complex organic Not widely used, subject to certain restrictions in industrial applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] At 200°C, in a 250mL four-neck flask, add 40% K 2 S 2 o 8 The solution oxidizes the pre-screened activated carbon for 4 hours to chemically modify it, wherein activated carbon: K 2 S 2 o 8Solution = 1g: 20ml, then wash the modified activated carbon with distilled water to neutrality and dry at 120°C for 18 hours, use the modified activated carbon as a carrier, and obtain activated carbon-based desulfurization adsorbent after impregnation, drying and roasting , the condition is: immersion solution Cu(NO3) 2 and Mn(NO3) 2 The concentration of the solution is 0.3mol / L and 0.15mol / L respectively, the impregnation time is 15 hours, the drying temperature is 120°C, the drying time is 3h, and the desulfurization adsorbent is obtained by roasting at 450°C for 5h under the protection of nitrogen.

[0025] Fill the desulfurizer on the fixed bed, use 100ml catalytic cracking gasoline as the raw material (the sulfur content is 968μg / g), control the reaction temperature to 80°...

Embodiment 2

[0027] At 200°C, in a 250mL four-neck flask, add 45% K 2 S 2 o 8 The solution oxidizes the pre-screened activated carbon for 4 hours to chemically modify it, wherein activated carbon: K 2 S 2 o 8 Solution = 1g: 20ml, then wash the modified activated carbon with distilled water to neutrality and dry at 120°C for 20 hours, use the modified activated carbon as a carrier, and obtain activated carbon-based desulfurization adsorbent after impregnation, drying and roasting , the condition is: immersion solution Cu(NO3) 2 and Mn(NO3) 2 The concentration of the solution is 0.3mol / L and 0.15mol / L respectively, the impregnation time is 40 hours, the drying temperature is 120°C, the drying time is 3h, and the desulfurization adsorbent is obtained by roasting at 450°C for 5h under the protection of nitrogen.

[0028] Fill the desulfurizer on the fixed bed, use 100ml catalytic cracking gasoline as the raw material (the sulfur content is 968μg / g), control the reaction temperature to 80...

Embodiment 3

[0030] At 250°C, in a 250mL four-neck flask, add 50% K 2 S 2 o 8 The solution oxidizes the pre-screened activated carbon for 4 hours to chemically modify it, wherein activated carbon: K 2 S 2 o 8 Solution = 1g: 20ml, then wash the modified activated carbon with distilled water to neutrality and dry at 120°C for 22 hours, use the modified activated carbon as a carrier, and obtain activated carbon-based desulfurization adsorbent after impregnation, drying and roasting , the condition is: immersion solution Cu(NO3) 2 and Mn(NO3) 2 The concentration of the solution is 0.36mol / L and 0.18mol / L respectively, the impregnation time is 15 hours, the drying temperature is 120°C, the drying time is 3h, and the desulfurization adsorbent is obtained by roasting at 450°C for 5h under the protection of nitrogen.

[0031] Fill the desulfurizer on the fixed bed, use 100ml catalytic cracking gasoline as the raw material (the sulfur content is 968μg / g), control the reaction temperature to 8...

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Abstract

The invention belongs to the technical field of gasoline desulfurization, and particularly relates to a method for preparing a gasoline desulfurization adsorbent. An activated carbon-based desulfurization adsorbent is obtained by loading active ingredients on activated and modified activated carbon serving as a carrier through impregnation, drying and roasting. The method is easy to operate, is low in investment, improves the capacity of adsorbing sulfide in gasoline by the adsorbent, particularly improves the adsorption on thiophene, dibenzothiophene and a tricyclic sulfur-containing compound, and has relatively small influence on the octane value of the gasoline.

Description

technical field [0001] The invention relates to a preparation method of a gasoline adsorbent, more specifically, a gasoline desulfurization adsorbent loaded with transition metal oxides on a modified active carbon base and a preparation method thereof. [0002] The invention belongs to the technical field of gasoline desulfurization, and in particular relates to a preparation method of a gasoline activated carbon desulfurization adsorbent. Background technique [0003] The sulfides in gasoline exist in the form of hydrogen sulfide, mercaptan, sulfide, disulfide, thiophene, disulfide, thiophene and its derivatives. These sulfur compounds will not only lead to the deterioration of gasoline oxidation stability, the decrease of octane number and the corrosion of engine combustion system, but also the sulfur oxides formed after combustion are the main pollutants of air pollution. As countries around the world pay more and more attention to environmental issues, the pollution cau...

Claims

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Application Information

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IPC IPC(8): C10G25/00B01J20/20B01J20/30
Inventor 车春玲
Owner 临沂星火知识产权服务有限公司
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