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Organic sulfur desulfurizer and preparation method thereof

A desulfurization agent and organic sulfur technology, applied in chemical instruments and methods, other chemical processes, gas fuels, etc., can solve the problems of equal volume impregnation, low applicable space velocity, increased workload, etc., and achieve easy regeneration and production The effect of high capacity and low cost

Active Publication Date: 2012-09-05
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

The disadvantage of this catalyst is that the applicable space velocity is low, that is, the amount of carbonyl sulfide that can be processed is small
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

[0020] Weigh 100g γ-Al 2 o 3 , the amount of water required for calculation is 100g×0.65ml / g=65ml, 10.145gKOH is dissolved in 65ml water to make an impregnation solution, the concentration of the impregnation solution KOH is 13.5% (wt), the impregnation solution is added to γ-Al 2 o 3 impregnated in , placed at room temperature for 10 hours, dried at 100°C for 5 hours, and then fired at 300°C for 3 hours to obtain γ-Al with a potassium oxide content of 8%. 2 o 3 Desulfurizer A with a content of 92%.

Embodiment 2

[0022] Weigh 100g γ-Al 2 o 3 , the amount of water required for calculation is 100g × 0.65ml / g=65ml, 14.94g KOH is dissolved in 65ml water to make an impregnation solution, the concentration of the impregnation solution KOH is 18.7% (wt), and the impregnation solution is added to γ-Al 2 o 3 impregnated in , after standing at room temperature for 2 hours, dried at 90°C for 24 hours, and then baked at 350°C for 4 hours to obtain γ-Al with a potassium oxide content of 13%. 2 o 3 Desulfurizer B with a content of 87%.

Embodiment 3

[0024] Weigh 100g γ-Al 2 o 3 , the amount of water required for calculation is 100g×0.65ml / g=65ml, 20.59g KOH is dissolved in 65ml water to make an impregnating solution, the concentration of KOH in the impregnating solution is 24.1% (wt), and the impregnating solution is added to γ-Al 2 o 3 impregnated in , placed at room temperature for 8 hours, dried at 95°C for 12 hours, and then fired at 400°C for 2 hours to obtain γ-Al with a potassium oxide content of 15%. 2 o 3 Desulfurizer C with a content of 85%.

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PUM

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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 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 Patents(China)
IPC IPC(8): B01J20/08B01J20/30C10L3/12
Inventor 汪祥胜苏利鹏孙志伟
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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