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In-situ preparation method of sulfur transfer agent for FCC regenerated flue gas

A technology of fluid catalytic cracking and sulfur transfer agent, which is applied in the direction of catalyst activation/preparation, catalytic cracking, physical/chemical process catalysts, etc. It can solve the problem of low sulfur release activity and achieve good mechanical strength, efficient SOx adsorption and removal The effect of additional performance

Inactive Publication Date: 2007-07-11
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing method for preparing sulfur transfer agent in situ, there is the method of immersing alumina microspheres in cerium, which is dried and roasted by immersing aluminum oxide in cerium. Although the obtained sulfur transfer agent has high sulfur absorption activity, it has low sulfur release activity (USP4606813 , CN1102433C)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 62.0g Mg(NO 3 ) 2 ·6H 2 O, 4.4g Fe(NO 3 ) 3 9H 2 O, 3.0g Zn(NO 3 ) 2 ·6H 2 O, 4.1g Ce(NO 3 ) 3 ·6H 2 O was made into 40mL aqueous solution, mixed with 60.0g pseudoboehmite, impregnated at room temperature for 4h, dried at 80°C for 12h, and calcined at 850°C for 4h to obtain sulfur transfer agent S1.

Embodiment 2

[0015] 62.0g Mg(NO 3 ) 2 ·6H 2 O, 4.4g Fe(NO 3 ) 3 9H 2 O, 3.0g Zn(NO 3 ) 2 ·6H 2 O, 4.1g Ce(NO 3 ) 3 ·6H 2 O was made into 60mL aqueous solution, mixed with 80.0g pseudoboehmite, impregnated at room temperature for 8h, dried at 100°C for 8h, and calcined at 750°C for 8h to obtain sulfur transfer agent S2.

Embodiment 3

[0017] 62.0g Mg(NO 3 ) 2 ·6H 2 O, 4.4g Fe(NO 3 ) 3 9H 2 O, 3.0g Zn(NO 3 ) 2 ·6H 2 O, 4.1g Ce(NO 3 ) 3 ·6H 2 O was made into 80mL aqueous solution, mixed with 120.0g pseudo-boehmite, impregnated at room temperature for 12h, dried at 120°C for 4h, and calcined at 600°C for 12h to obtain sulfur transfer agent S3.

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PUM

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Abstract

The invention relates to a method for preparing fluid catalyst crack (FCC) regenerate smoke sulfur transfer agent, wherein at room temperature, it mixes the mixture of magnesium salt, zinc salt, ferric salt, cerium salt, with the diaspore at same volume; immerges for 4-24h; drying at 80-120Deg. C, for 4-12h; brakes at 600-850Deg C for 4-12h, to obtain the solid sulfur transfer agent while the MgO content is 10-20%, the ZnO content is 1-5%, the Fe2O3 content is 1-5%, and the CeO2 content is 2-6%. The inventive product has high SOX adsorption effect and high mechanical strength.

Description

technical field [0001] The invention relates to a preparation method of a flue gas purifying agent, in particular to an in-situ preparation method of a fluidized catalytic cracking (FCC) regenerated flue gas sulfur transfer agent. Background technique [0002] Fluid Catalytic Cracking (FCC) is one of the main methods for producing gasoline and diesel in refinery, SO in FCC regeneration flue gas x The emissions of SO in the air account for about x 6-7% of the total emissions. SO x Not only seriously pollute the environment, endanger human health, but also SO x The interaction with the water in the regenerated flue gas increases the corrosion of equipment such as FCC regenerators and three-rotation. SO reduction in FCC regenerators x The main methods of emission are: 1. Flue gas washing; 2. Hydrodesulfurization of raw oil; 3. Catalytic deSO x (sulfur transfer agent). SO removal due to catalytic method x Almost no equipment investment is required, and the operating cost...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01J23/02B01J37/02C10G11/18
Inventor 杨建国于心玉刘玲程文萍刘彩华赵月昌何鸣元
Owner EAST CHINA NORMAL UNIV
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