Gasoline adsorbing desulfurizing method

A technology for adsorption desulfurization and gasoline, which is applied in the petroleum industry, refined hydrocarbon oil, etc., and can solve problems such as low desulfurization efficiency

Active Publication Date: 2010-12-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The existing adsorption desulfurization method has low desulfurization efficiency

Method used

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  • Gasoline adsorbing desulfurizing method
  • Gasoline adsorbing desulfurizing method
  • Gasoline adsorbing desulfurizing method

Examples

Experimental program
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Effect test

preparation example Construction

[0026]According to the concentration of the copper-containing solution used and the copper content in the adsorbent, the preparation method of the adsorbent of the present invention adopts a method of one-time impregnation or multiple impregnation. There is no special requirement for the concentration of the copper-containing solution, as long as the copper content in the adsorbent can meet the requirements after one or more immersions, for example, when using a low-concentration copper-containing solution, the method of increasing the number of immersion times can be used to make the final product The copper content meets the requirements, and when the concentration of the copper-containing solution used is high, the times of immersion can be reduced. Preferably, in the copper-containing solution, calculated as copper oxide, the copper content is 30g / L-200g / L, and the number of immersions is 1-3 times.

[0027] The adsorbent of the present invention preferably also contains a...

Embodiment 1

[0041] This example illustrates the composition of spinels containing alkaline earth metals and aluminum and their preparation.

[0042] Add 17.1 kilograms of decationized water into a stirred tank, add 1.8 kilograms (dry basis) of pseudo-boehmite under stirring, then add hydrochloric acid with a concentration of 18% by weight, stir evenly, the amount of hydrochloric acid makes the pH value of the slurry 2.0 ; continue to add 5 liters of V 2 o 5 - oxalic acid complex solution, stirred evenly; then add 2.0 kg (dry basis) of light magnesium oxide and 4.5 kg of decationized water to make a slurry, stir evenly to obtain a slurry with a solid content of 11.5% by weight. The resulting slurry was spray-dried at an inlet temperature of 500°C and an exhaust gas temperature of 180°C, and then calcined at 650°C for 2 hours to obtain magnesium-aluminum spinel-containing composite microspheres ZT with an average particle diameter of 60 microns 1 . ZT 1 The composition, specific surface...

Embodiment 2

[0045] This example illustrates the composition of spinels containing alkaline earth metals and aluminum and their preparation.

[0046] In a stirred kettle, add 20.2 kilograms of decationized water, add 2.44 kilograms (dry basis) of pseudoboehmite and 0.655 liters of chlorinated mixed rare earth solution under stirring, then add the hydrochloric acid that concentration is 18% by weight, stir evenly, hydrochloric acid The amount used was such that the pH of the slurry was 1.65. Continue adding 1 liter of V as described in Example 1 2 o 5 - Stir the oxalic acid complex solution evenly, continue to add 1.4 kg of light magnesium oxide (dry basis) and 3.18 kg of decationized water to make a slurry, stir evenly, and obtain a slurry with a solid content of 11.5% by weight. The resulting slurry was spray-dried at an inlet temperature of 500°C and an exhaust gas temperature of 180°C, and then calcined at 650°C for 2 hours to obtain magnesium-aluminum spinel-containing composite micr...

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Abstract

The invention discloses a gas adsorbing desulfurizing method, which is characterized by the following: contacting sulfur gasoline and one adsorbent; making the total quantity of the adsorbent as datum; dispensing the adsorbent with 1wt%-50wt% copper and the composition of 50wt%-99wt% alkaline-earth metal and aluminium spinel; setting the content of alkaline-earth metal at 20wt%-70wt% and the content of aluminium content at 30wt%-80wt% in the composition of alkaline-earth metal and aluminium spinel based on the total weight of the composition of alkaline-earth metal and aluminium spinel as datum. The adsorbing desulfurizing method has good desulfurizing effect of sulfur in the gasoline.

Description

technical field [0001] The present invention relates to a method for reducing the sulfur content of gasoline. Background technique [0002] The waste produced by the combustion of sulfur in gasoline is one of the sources of air pollution, and countries all over the world are restricting the sulfur content in finished gasoline more and more strictly. China's gasoline products are mainly composed of FCC gasoline, and 90% of the sulfur in finished gasoline comes from FCC gasoline. Therefore, reducing the sulfur content in FCC gasoline is one of the key links in the production of clean gasoline in my country. [0003] One way to reduce the sulfur content in gasoline is to use adsorbents to adsorb and desulfurize gasoline. This process requires the adsorbent to have high adsorption selectivity and good regeneration performance. [0004] The method disclosed in USP 4,592,829 uses an inorganic refractory material loaded with Ni and iron (such as alumina) as an adsorbent and a fix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G25/00
Inventor 蒋文斌张久顺田辉平朱玉霞陈蓓艳宋海涛沈宁元范玉华
Owner CHINA PETROLEUM & CHEM CORP
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