Method for synthesizing porous microsphere material containing NaY zeolite by waste FCC (fluid catalytic cracking) catalyst

A technology of porous microspheres and spent catalysts, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of saving raw materials, large specific surface area, and large pore volume

Active Publication Date: 2011-07-20
HUNAN JULI CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After simple treatment, the spent FCC catalyst can be directly used as the main raw material for the synthesis of porous microsphere materials containing NaY zeolite by in-situ crystallization process.

Method used

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  • Method for synthesizing porous microsphere material containing NaY zeolite by waste FCC (fluid catalytic cracking) catalyst
  • Method for synthesizing porous microsphere material containing NaY zeolite by waste FCC (fluid catalytic cracking) catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029](1) Add water to 2000g of FCC waste catalyst to make a slurry with a solid content of 30%, adjust the final pH value of the slurry to 2.5 with 8% hydrochloric acid, heat to 94°C, react for 1.0 hour, filter, wash with water, and obtain catalyst microspheres; The test shows that the specific surface of the catalyst increases by 86.13m 2 / g, the pore volume increased by 0.053ml / g, the nickel decreased by 1417ppm, and the vanadium decreased by 418ppm.

[0030] (2) Get 1300g of catalyst microspheres and grind them with a ball mill until the median diameter is 1.9 μm;

[0031] (3) Get 1000g natural kaolin and 900g catalyst microspheres and add water to make a slurry with a solid content of 32%, add 250ml sodium silicate, spray dry and form dry microspheres, the median diameter of the microspheres is 70.35 μm, and the microspheres Placed in the muffle furnace, roasted at 706°C for 6 hours to obtain roasted microspheres;

[0032] (4) Put 1970ml of sodium silicate, 260ml of lye...

Embodiment 2

[0034] (1) Add water to 2000g FCC waste catalyst to make a slurry with a solid content of 50%, adjust the final pH value of the slurry to 3.5 with 6% hydrochloric acid, heat to 96°C, react for 2.5 hours, filter, wash with water, and obtain catalyst microspheres; The test shows that the specific surface of the catalyst increases by 73.15m 2 / g, the pore volume increased by 0.051g / l, the nickel decreased by 1209ppm, and the vanadium decreased by 291ppm;

[0035] (2) Get 600g of catalyst microspheres and grind them with a ball mill until the median diameter is 1.3 μm;

[0036] (3) Get 4500g of natural kaolin and 500g of catalyst microspheres and add water to make a slurry with a solid content of 34%, add 315ml of sodium silicate, 87g of Tianqing powder, spray dry and form dry microspheres, and the median diameter of the microspheres is 68.78 μm , placing the microspheres in a muffle furnace and roasting at 983°C for 1.5 hours to obtain roasted microspheres;

[0037] (4) Put 292...

Embodiment 3

[0039] (1) Add water to 1000g of FC waste C catalyst to make a slurry with a solid content of 40%, adjust the final pH value of the slurry to 4.5 with 5% hydrochloric acid, heat to 98°C, react for 10 hours, filter, and wash with water to obtain catalyst microspheres; After testing, the specific surface of the catalyst was increased by 49.28m 2 / g, the pore volume increased by 0.023g / l, the nickel decreased by 1356ppm, and the vanadium decreased by 311ppm;

[0040] (2) Get 500g of natural kaolin and 1500g of roasted kaolin and add water to make a slurry with a solid content of 37%, add 300ml of sodium silicate, 50ml of sodium phosphate, and 85g of polyacrylamide, and spray dry to form dry microspheres. The diameter is 71.43 μm, the microspheres are placed in the muffle furnace, and roasted at 868 ° C for 3 hours to obtain the roasted microspheres;

[0041] (3) Put 2916ml of sodium silicate, 793ml of lye, 652ml of zeolite directing agent, 650g of catalyst microspheres, and 850g...

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Abstract

The invention discloses a method for synthesizing a porous microsphere material containing NaY zeolite by a waste FCC (fluid catalytic cracking) catalyst, which is a catalytic cracking process. The method is characterized by comprising the following steps: A. adding water and hydrochloric acid to the waste FCC catalyst for mixing slurry and acidizing to obtain catalyst microspheres; B. mixing thecatalyst microspheres with one or a combination of natural kaolin and roasted kaolin, adding water to obtain slurry containing 30-50% of solid, adding a functional agent to the slurry and then forming dried microspheres through spray drying, and roasting the dried microspheres at the temperature of 700-1100 DEG C for 0.5-10 hours to obtain roasted microspheres; and C. adding sodium silicate, a zeolite directing agent and alkali liquor to the catalyst microspheres and/or the roasted microspheres, adding the obtained mixed solution to a crystallization reaction kettle, performing hydrothermal crystallization at the temperature of 85-120 DEG C for 10-30 hours, filtering out a mother liquid, washing the obtained filter cake with deionized water, and then drying to finally obtain the finished product. The method is mainly used for synthesizing the porous microsphere material containing the NaY zeolite.

Description

technical field [0001] The invention relates to a method for synthesizing a NaY-containing zeolite porous microsphere material, in particular to a method for synthesizing a NaY-containing zeolite porous microsphere material with an FCC waste catalyst. Background technique [0002] Fluid Catalytic Cracking (FCC) process is the most important secondary processing process in oil refineries. Catalytic cracking process (FCC) catalyst is the most used catalyst in oil refining process. At present, the annual consumption in my country is 130-150kt. During the catalytic cracking process, due to coking and heavy metal poisoning, the specific surface and pore volume of the FCC catalyst decreased significantly with time, the framework structure was severely damaged, and its activity and selectivity decreased significantly. In order to maintain the catalytic activity of the system, it is necessary to replenish fresh catalyst regularly and quantitatively, and at the same time unload the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/90B01J29/08B01J35/10B01J20/18B01J20/30B01J20/28C10G11/05
Inventor 姚华郑淑琴谈立成阳光军甄玉红谭伏平
Owner HUNAN JULI CATALYST
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