Adhesive, application of adhesive, catalytic cracking catalyst and preparation method of catalytic cracking catalyst

A binder and viscosity technology, applied in the field of catalytic cracking catalyst and its preparation, can solve the problems of poor catalyst strength, high evaporation heat, and high drying temperature, and achieve the effects of reducing damage, large specific surface area, and low corrosion rate

Active Publication Date: 2017-10-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of spray drying is to evaporate excess water in the slurry at a certain temperature. When the solid content is low, more water needs to be evaporated, and the residence time of the material in the drying tower is the same, so more evaporation heat or high drying temperature is required. Moisture escapes from the inner surface of the rapid type particles at high temperature to form hollow spheres or microspheres with apple stalks. On the one hand, the strength of the catalyst will deteriorate, and on the other hand, it will be easily broken when fluidized in the FCC reverse system.

Method used

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  • Adhesive, application of adhesive, catalytic cracking catalyst and preparation method of catalytic cracking catalyst
  • Adhesive, application of adhesive, catalytic cracking catalyst and preparation method of catalytic cracking catalyst
  • Adhesive, application of adhesive, catalytic cracking catalyst and preparation method of catalytic cracking catalyst

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preparation example Construction

[0050] In the present invention, the silica sol can be the silica sol routinely used in the art, and a preferred embodiment of the silica sol preparation method can include: slowly drop hydrochloric acid in water glass, wherein SiO 2 The weight ratio of water glass in terms of water glass and hydrochloric acid in terms of HCl is (1-4):1, the preparation temperature is 10-30° C., and the preparation time is 1-3 hours.

[0051] According to the present invention, preferably, based on the total weight of the aluminum sol and the silica sol, the aluminum sol is based on Al 2 o 3 The calculated content is 50 to 80% by weight, and the silica sol is represented by SiO 2 The calculated content is 20 to 50% by weight. This content can be determined by fluorescence analysis.

[0052] It should be noted that the binder provided by the present invention contains the above-mentioned aluminum sol, and the binder can be obtained by mixing the above-mentioned aluminum sol and silica sol. ...

Embodiment approach

[0059] 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.

[0060] According to the method of the present invention, normal temperature is, for example, generally 0 to 40°C.

[0061] 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.

[0062] 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.

[0063] According to a preferred embodiment of the present invention, the conditions for the first contact...

Embodiment 1

[0117] (1) Carry out the first contact with 1mol 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% by weight ;

[0118] (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.

[0119] 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 ...

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Abstract

The invention relates to the fields of catalytic cracking catalysts and adhesives, and discloses an adhesive, an application of the adhesive, a catalytic cracking catalyst and a preparation method of the catalytic cracking catalyst. The adhesive contains an alumina sol and a silica sol, wherein the molar ratio of aluminum to chloride in the alumina sol is (1-1.5):1, the corrosion rate is equal to or lower than 1.5g/m<2>*h, the pH value is 2.8 or above, and the viscosity is 500 mPa*s or above. The alumina sol contained in the adhesive provided by the invention has the advantages of few free chloride ions, an optimized structure, high viscosity, low corrosion rate and a high pH value, and can strengthen the structure of adhesive particles, increase the adhesive property of the adhesive, reduce blocking of molecular sieve structures of active components in the catalyst by the adhesive, decrease the influence degree of the adhesive to the catalyst activity, decrease the usage amount of molecular sieves in the catalyst and reduce the costs of the catalyst.

Description

technical field [0001] The invention relates to the field of binders containing aluminum sol, in particular to a binder, the application of the binder of the invention in the preparation of a catalytic cracking catalyst, 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 a particle size of 20-150 microns and an average particle size of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/12B01J29/08
Inventor 张杰潇田辉平许明德严加松邱中红张万虹
Owner CHINA PETROLEUM & CHEM CORP
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