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Sulfur transfer catalyst and its preparation method

A catalyst, sulfur transfer technology, applied in chemical instruments and methods, physical/chemical process catalysts, catalytic cracking, etc., can solve the problems of deactivation, poisoning of automobile exhaust purification catalysts, low activity, etc. Easy to aggregate and reduce the effect of activity

Active Publication Date: 2006-01-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The presence of organic sulfur compounds in gasoline will aggravate the emission of polluting gases in automobile exhaust, and its combustion products SO x It can also cause poisoning and deactivation of automobile exhaust gas purification catalysts
Although the disclosed composition and catalyst of the above-mentioned patent (application) can effectively reduce SO in FCC flue gas x emissions without reducing sulfur content in FCC gasoline products
In addition, the sulfur transfer catalysts disclosed in the prior art are less active

Method used

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preparation example Construction

[0029] According to the preparation method of the catalyst provided by the present invention, the volume consumption of the solution containing the additional metal component compound is greater than the water drop method pore volume of the spinel composition containing alkaline earth metal and aluminum, and the time of immersion is enough to make the The compound of the additional metal component is uniformly dispersed in the spinel composition containing alkaline earth metal and aluminum. The concentration of the solution of the additional metal component compound is not particularly limited, as long as a sufficient amount of the additional metal component can be introduced into the catalyst after one or more impregnations. When the concentration of the solution of the additional metal component compound is high, a sufficient amount of additional metal component can be introduced by one impregnation, and when the concentration of the solution of the additional metal component...

Embodiment 1

[0044] This example illustrates an alkaline earth metal and aluminum containing spinel composition and a method for its preparation.

[0045] In a stirred tank, add 17.1 kg of decationized water, add 5.625 kg of pseudoboehmite under stirring, then add a hydrochloric acid aqueous solution with a concentration of 18% by weight, stir evenly, and use the amount of hydrochloric acid aqueous solution to make the pH value of the slurry 2.0 . Continue to add 5 L V 2 o 5 - Oxalic acid complex solution, stir well. Continue to add 2.0 kg of light magnesia and 4.5 kg of decationized water, beating and stirring 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 an average particle diameter of 60 Micron Microspheres containing magnesium-aluminum spinel composition ZT 1 . ZT 1 The composition, specific surface a...

Embodiment 2

[0048] This example illustrates an alkaline earth metal and aluminum containing spinel composition and a method for its preparation.

[0049] In a stirred tank, add 20.2 kg of decationized water, add 7.63 kg of pseudoboehmite and 0.655 liter of chlorinated mixed rare earth solution under stirring, then add a hydrochloric acid aqueous solution with a concentration of 18% by weight, and stir evenly. The pH of the slurry was brought to 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 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 composite microspheres ZT with an average particle diameter of 60 microns 2 ...

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Abstract

Sulfur transfer catalyst comprises spinel compound contained with alkaline-earth metal and aluminum, or contained rare earth metal except cerium, or without vanadium; and oxide with adding metal component of cerium oxide and zinc oxide; based on catalyst, the weight share is spinel compound 50-90%, cerium oxide and zinc oxide 10-50%; the average particle diameter of cerium oxide and zinc oxide is less separately 130A and 300A with XRD method. It can decrease the reproduced SOx with high active in FCC and sulfur content in gas outcome.

Description

technical field [0001] The invention relates to a sulfur transfer catalyst and a preparation method thereof, more specifically to a sulfur transfer catalyst containing a spinel composition of alkaline earth metal and aluminum and a preparation method thereof. Background technique [0002] Fluid Catalytic Cracking (FCC) is the main method to obtain light oil products with high use value such as gasoline and diesel oil from heavy feedstock oil. The FCC unit usually consists of a riser reactor and a regenerator. During operation, cracking catalyst microspheres with cracking activity and heavy raw oil undergo high-temperature cracking reactions in the riser reactor to generate light oil and gas products. , At the same time, the cracking catalyst also loses its cracking activity due to coking. The deactivated cracking catalyst needs to enter the regenerator, and be burned at high temperature in the presence of air to regenerate the catalyst. Becaus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10C10G11/02
Inventor 蒋文斌达志坚张万虹田辉平陈蓓艳范玉花宋海涛
Owner CHINA PETROLEUM & CHEM CORP
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