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A kind of hydrocracking catalyst and its preparation and application

A hydrocracking and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems that need to be further improved, and achieve high catalytic activity and middle distillate selectivity, high pore size concentration effect

Active Publication Date: 2016-11-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although CN101757929A discloses that the pore concentration of the carrier can be more than 7, but from the examples disclosed in CN101757929A, the highest pore concentration of the carrier is 21.4, which needs to be further improved

Method used

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  • A kind of hydrocracking catalyst and its preparation and application
  • A kind of hydrocracking catalyst and its preparation and application
  • A kind of hydrocracking catalyst and its preparation and application

Examples

Experimental program
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preparation example Construction

[0027] According to the catalyst preparation method provided by the present invention, the preparation method of the carrier includes the following steps: (1) mixing the precursor of the heat-resistant inorganic oxide, Y-type molecular sieve and Beta molecular sieve, peptizer and water to provide raw materials; (2) ) feeding the raw materials into an extruder, kneading and extruding in the extruder to obtain a molded body; (3) roasting the molded body to obtain the carrier, wherein, The temperature of the molded body at the outlet of the extruder is 40-150°C.

[0028]In the process of extruding raw materials with an extruder to obtain a molded body, the extrusion temperature is usually not particularly controlled (usually room temperature or lower than 40 ° C), but the inventors of the present invention have found in the course of research that The temperature of the molded body at the outlet of the extruder is 40-150° C., so that the most probable pore diameter and pore diame...

Embodiment 1

[0089] Get SB powder (commercially purchased from SASOL company, relative crystallinity 95.4%, grain size 49.0nm, dry basis content is 75%) 84.0g, Siral40 powder (commercially purchased from SASOL company, silicon oxide content is 40%, dry basis Content is 77.5%) 32.2g, Beta molecular sieve (commercially purchased from Hunan Jianchang Petrochemical Co., Ltd., silicon-aluminum ratio is 63.4, dry basis content is 83% by weight) 8.4g, Y-type molecular sieve A (unit cell constant Crystallinity 81.4%, Na 2 O0.02%, dry basis 86%, the preparation method refers to ZL01118446.9, Example 6, molecular sieve I) 6.1g, add 3 g of squash powder and dry mix evenly to obtain dry powder. Add 2 mL of concentrated nitric acid (concentration: 65% by weight, the same below) into a beaker filled with 91 mL of deionized water, and mix well to obtain an acid solution. Mix the acid liquid and the dry powder, and stir evenly to obtain the raw material mixture for extrusion (the temperature of the raw ...

Embodiment 2

[0091] Get 77.4g of CL powder (taken from Changling Catalyst Factory, relative crystallinity 98.1%, grain size 33.0nm, dry basis content is 71%), Siral30 powder (commercially purchased from SASOL company, silicon oxide content is 30%, dry Base content is 76%) 53.3g, Beta molecular sieve (commercially purchased from Hunan Jianchang Petrochemical Co., Ltd., silicon-aluminum ratio is 63.4, dry basis content is 83% by weight) 3.7 grams, Y-type molecular sieve A (unit cell constant Crystallinity 81.4%, Na 2 O0.02%, dry basis 86%, the preparation method refers to ZL01118446.9, Example 6, molecular sieve I) 2.4g, add 3 g of squid powder and dry mix evenly to obtain dry powder. Add 3 mL of concentrated nitric acid (concentration: 65% by weight, the same below) into a beaker filled with 101 mL of deionized water, and mix well to obtain an acid solution. Mix the acid liquid and the dry powder, and stir evenly to obtain a raw material mixture for extrusion (the temperature of the raw m...

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Abstract

A hydrocracking catalyst and its preparation and application, the catalyst contains a carrier containing a heat-resistant inorganic oxide matrix, a Y-type molecular sieve and a Beta molecular sieve, wherein the most probable pore diameter of the carrier is 1 to 30 nm, and the pore diameter is concentrated The degree is 22 to 48, and the most probable pore diameter is measured by the BET method. The pore concentration refers to the ratio between the height of the peak and the half of the peak in the distribution curve of the specific pore volume measured by the BET method as a function of the pore diameter. Ratio of height to width. The preparation method of the catalyst comprises preparing a carrier containing a heat-resistant inorganic oxide substrate, a Y-type molecular sieve and a Beta molecular sieve, and the preparation method of the carrier comprises a precursor of a heat-resistant inorganic oxide, a Y-type molecular sieve and a Beta molecular sieve, and a peptizer mixed with water and extruded, wherein the temperature of the molded body at the outlet of the extruder is 40-150°C. Compared with the prior art, the hydrocracking catalyst provided by the invention has high catalytic activity and middle distillate oil selectivity when used in hydrocarbon oil processing.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and its preparation and application. Background technique [0002] In recent years, the trend of heavy and inferior crude oil has become increasingly obvious worldwide. At the same time, the demand for middle distillates, reforming and steam cracking raw materials has continued to increase. This promotes the rapid development of heavy distillate processing technology, and catalyst is the most important and key factor. [0003] Catalysts used for the conversion of heavy oil or macromolecules require not only a large pore size and sufficient pore volume, but also a concentrated pore size distribution of the pores in the catalyst (that is, a high pore size concentration). [0004] Since the catalysts used for the conversion of heavy oil or macromolecules are generally obtained by loading catalytically active components on the carrier, the preparation has larger pore size and pore volume, and has a higher ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G47/20
Inventor 董松涛董建伟聂红石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP