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Organic sulfur desulfurizer and preparation method thereof

A desulfurizer, organic sulfur technology, applied in organic chemistry, chemical instruments and methods, refining with metal oxides, etc., can solve the problems such as equal volume impregnation, increased workload, no research, etc., and achieves easy regeneration and low cost. Inexpensive, easy-to-obtain results

Active Publication Date: 2009-12-02
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by temperature, impregnation solution concentration, PH value and immersion time, the alkali content in the solid alkali produced by this method is relatively low, and there will be a large amount of filtrate in the solid alkali preparation process, and the filtrate needs further treatment before it can be recycled , which increases the workload in the preparation process, it is not as good as the equal volume impregnation method
In addition, the use of solid alkali pre-alkali washing instead of liquid alkali washing can remove hydrogen sulfide and some mercaptans in liquefied gas, and there is some consensus that it is beneficial to the removal of total sulfur, but there is no consensus on the removal of organic matter in hydrocarbons below C6 Research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 156.3 grams of pseudo-boehmite (alumina content 64%), 3.66 grams of silica sol (SiO 2 Content 30%) and 6 grams of squat powder were mixed, 3 grams of concentrated nitric acid and appropriate amount of water were added, extruded, dried at 90°C for 24 hours, and roasted at 500°C for 5 hours to obtain carrier Z-1. Calculate the volume of water required by the aforementioned method, then dissolve 10.26 grams of KOH in water to make an impregnating solution, add the impregnating solution to the carrier Z-1, leave it at room temperature for 12 hours, and dry it at 100°C for 10 hours. Roast at 400°C for 3 hours to obtain the desulfurizer A of the present invention, in which γ-Al 2 o 3 The content of silicon dioxide is 91%, the content of silicon dioxide is 1%, and the content of potassium oxide is 8%.

[0020] The concentrated nitric acid in the present embodiment is as gelling agent.

Embodiment 2

[0022] 156.3 grams of pseudo-boehmite (alumina content 64%), 19.84 grams of silica sol (SiO 2 Content 30%) and 5 grams of carboxymethyl cellulose are mixed, add 2 grams of concentrated nitric acid, 1 gram of citric acid, appropriate amount of water, extrude, dry at 100 ° C for 10 hours, and roast at 600 ° C for 4 hours to prepare Vector Z-2 was obtained. Calculate the volume of water required by the aforementioned method, then dissolve 15.28 grams of KOH in water to make an impregnating solution, add the impregnating solution to the carrier Z-2, leave it at room temperature for 10 hours, and dry it at 105°C for 6 hours. Roast at 300°C for 4 hours to obtain the desulfurizer B of the present invention, in which γ-Al 2 o 3 The content of silicon dioxide is 84%, the content of silicon dioxide is 5%, and the content of potassium oxide is 11%.

[0023] The mixture of concentrated nitric acid and citric acid is used as gelling agent in this embodiment.

Embodiment 3

[0025] 156.3 grams of pseudo-boehmite (alumina content 64%), 34.63 grams of silica sol (SiO 2 content 30%) and 4 grams of lignin, add 4 grams of concentrated nitric acid, 1 gram of citric acid, and appropriate amount of water, extrude, dry at 120°C for 5 hours, and roast at 700°C for 3 hours to obtain carrier Z -3. Calculate the volume of water required by the aforementioned method, then dissolve 22.73 grams of KOH in water to make an impregnating solution, add the impregnating solution to the carrier Z-3, leave it at room temperature for 12 hours, and dry it at 100°C for 10 hours. Roast at 400°C for 3 hours to obtain the desulfurizer C of the present invention, in which γ-Al 2 o 3 The content of silicon dioxide is 77%, the content of silicon dioxide is 8%, and the content of potassium oxide is 15%.

[0026] The mixture of concentrated nitric acid and citric acid is used as gelling agent in this embodiment.

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Abstract

The invention relates to a desulfurizer of organic sulfur (such as carbonyl sulfide, thiol, disulphide and the like) for removing hydrocarbon, in particular for removing hydrocarbon with less than six carbon atoms; the desulfurizer comprises gamma-Al2O3 modified by silicon dioxide, which is used as a carrier and alkali metal oxide used as an active constituent. The desulfurizer has the advantages of high precision for removing organic sulfur, simple preparation process and low cost, and the organic sulfur can be transferred to carbonyl sulfide with above 95% of conversion rate.

Description

technical field [0001] The invention relates to an organic sulfur desulfurizer and a preparation method thereof, in particular to a desulfurizer for removing organic sulfur in hydrocarbons below C6 and a preparation method thereof. Background technique [0002] Sulfur in petrochemical products can be divided into inorganic sulfur and organic sulfur. Inorganic sulfur is mainly hydrogen sulfide, and the desulfurization technology for removing hydrogen sulfide has been relatively mature. Organic sulfur includes carbonyl sulfide, mercaptan, sulfide, thiophene and disulfide, etc. Currently, commonly used methods for removing organic sulfur include hydrodesulfurization and catalytic oxidation. The hydrodesulfurization method is to convert the above-mentioned organic sulfur in hydrocarbon oil (including liquefied petroleum gas, naphtha, catalytic gasoline, etc.) into inorganic sulfide and remove it. This method has the disadvantage of high cost. The catalytic oxidation method is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/16C07C7/00C07C7/148C10G70/00C10L3/12
Inventor 汪祥胜孙志杰
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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