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A kind of preparation method of aluminum sol

A technology of aluminum sol and aluminum chloride, which is applied in chemical instruments and methods, aluminum compounds, colloidal chemistry, etc., can solve the problems of expensive raw materials for preparing aluminum sol, and achieve the effects of reducing the production risk factor, simplifying the process, and reducing the preparation cost.

Active Publication Date: 2017-03-22
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a method for preparing aluminum sol by using waste catalyst, which not only solves the problem of expensive raw materials for preparing aluminum sol, but also provides a new way for harmless treatment of catalytic cracking waste catalyst

Method used

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  • A kind of preparation method of aluminum sol
  • A kind of preparation method of aluminum sol
  • A kind of preparation method of aluminum sol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Select the spent catalyst CAT-1 unloaded from the FCC unit, then mix and stir it with an acetic acid buffer solution with a pH value of 4, and heat it to 90°C, then add EDTA solution to the mixed system, and keep the temperature at 90°C for reaction 4 hours, wherein the weight ratio of organic acid:complexing agent:water:spent catalyst in the mixed system is 2:1.5:6:1, and then the obtained product is washed and filtered. Wherein, the heavy metal content (ppm) in the filter cake: iron, nickel, vanadium, calcium, sodium are 562,136,152,262,224 respectively.

[0028] (2) Re-beat the filter cake in step (1), mix and stir with hydrochloric acid solution with a pH value of 1, and heat to 90°C, keep the temperature for 4 hours, wherein the hydrochloric acid in the system: water: the weight of the filter cake The ratio is 1.5:6:1, and then the resulting product is filtered.

[0029] (3) Transfer the filtrate in step (2) to the reaction kettle, add aluminum particles, cont...

example 2

[0033] Take 40 parts by weight of kaolin on a dry basis, 10 parts by weight of aluminum sol-1 on a dry basis, 18 parts by weight of pseudo-boehmite on a dry basis and 32 parts by weight of HCRY on a dry basis (produced by our company) mixed and stirred, the acid-aluminum ratio is 0.07, sprayed in a small spray granulation tower, roasted in a muffle furnace at 450°C for 2 hours, washed, and dried to obtain catalyst microspheres, which are recorded as catalyst-1.

example 3

[0035] Get the kaolin of 40 parts by weight on a dry basis, the aluminum sol A (Hunan Xinpeng) of 10 parts by weight on a dry basis, the pseudo-boehmite of 18 parts by weight on a dry basis and 32 parts by weight on a dry basis HCRY (produced by our company) in parts by weight is mixed and stirred, the acid-aluminum ratio is 0.07, sprayed in a small spray granulation tower, roasted in a muffle furnace at 450°C for 2 hours, washed, and dried to obtain catalyst microspheres, which are recorded as catalysts -2.

[0036] The analysis result of catalyst in the example is as follows

[0037]

[0038] Catalyst Aging: The two prepared catalysts were hydrothermally treated at 800°C and 100% steam for 17 hours before use.

[0039] Catalyst evaluation: The evaluation of catalyst was carried out on FFB fixed fluidized bed. The raw material is Changyi No. 1 catalytic raw material oil (see attached table 1 for the properties of the raw material), the reaction temperature is 500°C, the ...

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PUM

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Abstract

The invention discloses a preparation method for novel alumina sol by using a waste catalyst. The method is characterized in that the waste catalyst contains more than 50% of alumina; alumina is separated from the waste catalyst under the synergistic action of an organic acid, a complexing agent and an inorganic acid; and the obtained alumina is mixed with hydrochloric acid, aluminum and an antifoaming agent according to a certain ratio so as to produce the alumina sol. The aluminum sol prepared by using the method in the invention has a high aluminum-chlorine ratio and can be reused in the production of a fresh catalyst, so the cyclic utilization of materials is realized; the production cost is reduced; meanwhile, the treatment of the waste catalyst in the oil refining industry is facilitated; and the environment is protected.

Description

technical field [0001] The patent of the invention relates to a method for preparing aluminum sol by using catalytic cracking waste catalyst as a raw material, which belongs to the field of solid waste treatment and application. Background technique [0002] Spent catalytic cracking catalyst is a solid waste formed by the catalyst used in the catalytic cracking process of crude oil due to natural running loss, long-term use inactivation, and regular discharge. Its main chemical components are alumina and silica, and it also contains a small amount of iron, nickel, Vanadium, calcium, magnesium and trace heavy metal oxides. At present, these spent catalysts are usually landfilled as "hazardous waste", which not only has high safety landfill costs, but also wastes resources. Therefore, the resource utilization of spent catalysts has become an urgent problem to be solved. [0003] CN200910020761.2 discloses a method for reclaiming aluminum hydroxide from alumina-based molybdenu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/00C01F7/00
Inventor 高明军李凤刘惠娟张新功张晓佳徐贵山
Owner QINGDAO HUICHENG PETROCHEM TECH
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