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A kind of phospho-alumina sol and preparation method and application thereof, catalytic cracking catalyst and preparation method thereof

A technology of aluminum sol and sol, applied in the field of catalytic cracking catalyst and its preparation, can solve problems such as waste, and achieve the effects of simple process, high pH value and lower production cost

Active Publication Date: 2019-11-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents disclose the preparation method for preparing phosphoraluminum glue, but too much phosphoric acid is added in the preparation method, and there is a waste phenomenon

Method used

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  • A kind of phospho-alumina sol and preparation method and application thereof, catalytic cracking catalyst and preparation method thereof
  • A kind of phospho-alumina sol and preparation method and application thereof, catalytic cracking catalyst and preparation method thereof
  • A kind of phospho-alumina sol and preparation method and application thereof, catalytic cracking catalyst and preparation method thereof

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preparation example Construction

[0049] The method for preparing aluminum sol of the present invention can reduce the usage amount of hydrochloric acid, reduce the addition amount of chloride ions, reduce the damage of free acid to the properties of aluminum sol, improve the activity of aluminum sol, and at the same time avoid the pH value of aluminum sol caused by excessive hydrochloric acid If it is too low, it will damage the molecular sieve and affect the catalyst activity.

[0050] In the present invention, the process of the first reaction and the second reaction is accompanied by stirring, and the process of the first reaction and the second reaction ends when the stirring is stopped. The time for the first reaction and the second reaction described below is the time when stirring is continued.

[0051] According to a preferred embodiment of the present invention, the temperature of the first reaction is 50-80°C.

[0052] According to a preferred embodiment of the present invention, the temperature of...

Embodiment approach

[0068] According to a preferred embodiment of the present invention, the method further includes: before performing step (2), standing the first contacted mixture at room temperature for 1-30 hours, preferably standing for 2-6 hours. The static means that after the agitation accompanying the first contact is stopped, the mixture after the first contact is left in a non-stirred state.

[0069] According to the method of the present invention, normal temperature refers to room temperature, for example, generally 0-40°C.

[0070] According to a preferred embodiment of the present invention, the conditions for the first contact further include: relative to 1 mol of hydrochloric acid, the amount of metal aluminum used is 0.8 mol-1.3 mol.

[0071] According to a preferred embodiment of the present invention, the conditions of the first contact further include: the first contact time is 2-5 hours.

[0072] According to a preferred embodiment of the present invention, the conditions ...

Embodiment 1

[0123] (1) Carry out the first contact with 0.8mol metal aluminum (China Aluminum Corporation) and 1mol (HCl) hydrochloric acid, control the temperature of the first contact process to be 50°C, the first contact time is 3h, and the initial concentration of hydrochloric acid used is 32 wt. %;

[0124] (2) The mixture after the first contact was left at room temperature at 20°C for 6 hours, and then mixed with γ-Al 2 o 3 (Shandong Aluminum Plant) and η-Al 2 o 3 (Shandong Aluminum Works) carries out the second contact, the second contact temperature is 30 ℃, the second contact time is 4h, the gamma-Al calculated as aluminum 2 o 3 , η-Al in aluminum 2 o 3 The molar ratio to the metal aluminum in step (1) is 0.05:0.05:1. The physical and chemical properties of aluminum sol are listed in Table 1.

[0125] aluminum sol 27 Al NMR determination, spectrogram see figure 1 , where the peak height and peak area of ​​the signal peak at the chemical shift of 0 to 3 are low and the ...

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Abstract

The invention relates to the field of phosphorus-aluminum sol and discloses phosphorus-aluminum sol, a preparation method and application thereof, a catalytic cracking catalyst and a preparation method thereof. The phosphorus-aluminum sol is obtained through contact between aluminum sol and phosphoric acid, wherein the molar ratio of aluminum to chlorine in the aluminum sol is (1-1.5) to 1, the corrosion rate of the aluminum sol is not more than 1.5g / m<2>.h, the pH value of the aluminum sol is 2.8 or above, and the viscosity of the aluminum sol is 500mPa.s or above. The aluminum sol of the phosphorus-aluminum sol has the advantages of few free chloride ions, optimal structure, large viscosity, low corrosion rate, high pH value and the like, so that the particle structure of the phosphorus-aluminum sol can be enhanced, the adhesive property of the phosphorus-aluminum sol is improved, meanwhile, the blockage caused by the phosphorus-aluminum sol to molecular sieve structures of active components in the catalyst is reduced, the contribute of the phosphorus-aluminum sol to the cracking activity of the catalyst is increased, the use amount of molecular sieves can be reduced, and the cost of the catalyst is lowered.

Description

technical field [0001] The invention relates to the field of aluminum-phosphorus sol, in particular to an aluminum-phosphorus sol, a method for preparing the aluminum-phosphorus sol, an application of the aluminum-phosphorus sol in the preparation of a catalytic cracking catalyst, and a catalytic cracking catalyst and a preparation method thereof. Background technique [0002] Fluid catalytic cracking technology is the most important means of secondary processing of crude oil. With the deepening of the heavy and inferior quality of FCC feed, the content of active component molecular sieve in the catalyst has increased from 15-20% in the early stage to the present 35% or even 40% of the above. With the increase of molecular sieve content, the wear index and sphericity of the catalyst have become a very important issue in the catalyst preparation process. The catalyst must meet a certain strength requirement and at the same time, the catalyst forms microsphere particles with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/00C10G11/08B01J29/08C07C4/06C07C11/06
CPCB01J13/0008B01J29/088B01J37/0009B01J2229/20B01J2229/42C07C4/06C07C2529/08C10G11/08C07C11/06Y02P20/52
Inventor 邱中红张万虹许明德张杰潇严加松田辉平
Owner CHINA PETROLEUM & CHEM CORP
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