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Gasoline sulfur-reducing composition and its preparing and using method

A composition and sulfur reduction technology, applied in the petroleum industry, refined hydrocarbon oil, cracking, etc., can solve problems such as poor sulfur reduction effect

Active Publication Date: 2008-01-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The existing sulfur reducing composition used for gasoline adsorption desulfurization and the gasoline sulfur reducing composition used for catalytic cracking have poor sulfur reducing effect

Method used

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  • Gasoline sulfur-reducing composition and its preparing and using method

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preparation example Construction

[0031] In the preparation method of the sulfur-reducing composition of the present invention, copper is distributed in the spinel composition containing alkaline earth metal and aluminum by one-time dipping or multiple dipping methods, and the volume of the copper-containing solution used for each dipping is The composition of aluminum spinel is 1.5 to 100 times, preferably 2 to 30 times, more preferably 2.5 to 20 times, and still more preferably 3 to 15 times, the pore volume of the water drop method. The time of impregnation should be enough to make the copper component uniformly dispersed in the composition of spinel containing alkaline earth metal and aluminum, preferably each time of impregnation is at least 5min, when the impregnation time exceeds 120 minutes, the impact on catalyst impregnation Since it can be ignored, it is more preferable that the immersion time is 10 to 120 minutes. When the method of multiple impregnations is used, after each impregnation the copper...

Embodiment 1

[0046] This example illustrates compositions of spinels containing alkaline earth metals and aluminum and methods for their preparation.

[0047] 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 L V 2 o 5 - Oxalic acid complex solution, stirred evenly, then added 2.0 kg (dry basis) of light magnesium oxide and 4.5 kg of decationized water, beating, stirred 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

[0050] This example illustrates compositions of spinels containing alkaline earth metals and aluminum and methods for their preparation.

[0051] 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 consumption that makes the pH value of slurry is 1.65, continue to add 1 liter of V described in example 1 2 o 5 - Stir the oxalic acid complex solution evenly, then 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 microsph...

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Abstract

A gasoline sulfur-decreasing composite, its production and use are disclosed. The composite consists of copper with copper oxide 1-50 wt%, and spinelle composite 50-99 wt% with alkaline earth 20-70 wt% and aluminum 30-80 wt%. The average grain diameter of copper oxide is not greater than 30 nm. The usage level of copper-contained solution is 1.5-100 times of spinelle composite drop volume. It hasbetter desulfurizing activity and can be used as adsorbent and cracking accessories.

Description

technical field [0001] The invention relates to a composition for reducing the sulfur content of gasoline and its preparation and application method. 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 dominated by 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/09C10G11/02
Inventor 蒋文斌陈蓓艳宋海涛田辉平达志坚唐立文沈宁元范玉华
Owner CHINA PETROLEUM & CHEM CORP
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