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Catalyst for isodewaxing hydrocracking tail oil and preparation method thereof

A technology of hydrocracking tail oil and isomerization dewaxing, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., and can solve the problem of incompatibility between metal active sites and carrier acid centers, and the difficulty of industrialization of the process , complex preparation process and other issues, to achieve good addition/dehydrogenation activity and isomerization performance, excellent selectivity, and reduce agglomeration

Active Publication Date: 2021-11-26
SINOCHEM QUANZHOU PETROCHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this method is relatively complicated, and the process of coating with organic matter is difficult to industrialize.
[0008] In addition, patents such as CN 106466623A, CN 105709816A, CN 103773468A, CN 101172249A, and CN1488733A all modified heterogeneous catalysts, and improved metal activity or The acidity of the support can improve the conversion rate and selectivity of the heterogeneous catalyst, but there are problems that the metal active site and the acid center of the support do not match, and the production process is relatively complicated.

Method used

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  • Catalyst for isodewaxing hydrocracking tail oil and preparation method thereof
  • Catalyst for isodewaxing hydrocracking tail oil and preparation method thereof
  • Catalyst for isodewaxing hydrocracking tail oil and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh the ZSM-22 molecular sieve 65 g, ZSM-5 molecular sieve 10 g to add the ball mill, then put the mill of 100 g of 5 mm, 250 RPM ball milling for 10 min; then add 0.744 g of Pt (NH) 3 ) 4 (NO 3 ) 2 The ball mill is continued in 250 rpm for 10 min. It is weighed with a thin water aluminum stone 11g, Tianjing powder 2g, and mix it with the ball milling composite powder, then add 75 g of nitric acid solution (add water by 1.5 g of concentrated nitric acid to add water), after 13 minutes, select aperture 2.7 mm four-leaf-type orifice plate extrusion is formed; after 20 minutes of booth, cut into 2 mm small segments, then put it in 120 ° C for 12 h, after removal, take out to vent the air under air conditions for 4 h, result Heterogeneous dewaxed catalyst S1.

Embodiment 2

[0033]ZSM-23 zeolite weighed 65g, H-β zeolite was added 10g ball mill jar, and then placed 100 g of balls of 5mm diameter, 250 rpm milling 10min; was then added 0.744g Pt (NH 3 ) 4 (NO 3 ) 2 To 250rpm continue milling 10min. After weighing 11g quasi boehmite, sesbania powder 2g, which was well mixed composite powder with a ball mill, and then added a solution of 75 g of nitric acid (concentrated nitric acid was added 1.5 g of water dubbed), kneaded for 13 minutes selection aperture Clover orifice 2.7 mm extrusion molding; share cool after 20 minutes, cut into small pieces 2 mm, and then placed in an oven at 120 deg.] C bake 12 h, after removing baked at 350 deg.] C into 4h under atmospheric conditions, to give iSODEWAXING catalyst S2.

Embodiment 3

[0035] Zeolite ZSM-22 weighed 65 g, H-β zeolite was added 10 g in a ball mill pot, and then placed 100 g of balls of 5mm diameter, 250 rpm milling 10 min; then added 0.744g Pt (NH 3 ) 4 (NO 3 ) 2 To 250 rpm to continue milling 10min. After weighing 11g quasi boehmite, sesbania powder 2g, which was well mixed composite powder with a ball mill, and then added a solution of 75 g of nitric acid (concentrated nitric acid was added 1.5 g of water dubbed), kneaded for 13 minutes selection aperture Clover orifice 2.7 mm extrusion molding; share cool after 20 minutes, cut into small pieces 2 mm, and then placed in an oven at 120 deg.] C bake 12 h, after removing baked at 350 deg.] C into 4h under atmospheric conditions, to give isomerization dewaxing catalyst S3.

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Abstract

The invention discloses a catalyst for preparing base oil by isodewaxing hydrocracking tail oil and a preparation method of the catalyst, and belongs to the field of catalytic materials. The preparation method comprises the following steps: firstly, carrying out ball milling on two different types of molecular sieves by using a ball mill, then adding oxides or metal salts containing VIII B group metal elements for ball milling, and finally kneading, extruding, drying and roasting to prepare the isodewaxing catalyst. The molecular sieves are fully mixed, agglomeration among the molecular sieves is reduced, the surface area of the molecular sieves is increased, and the metal elements and the molecular sieves are chemically associated through ball milling, so that the synergistic effect between acid and metal in the catalyst is improved, and the dehydrogenation / addition activity of the catalyst is ensured. Therefore, the isodewaxing catalyst prepared by the invention has high conversion rate and selectivity.

Description

Technical field [0001] The present invention belongs to the field of catalytic materials, and is specifically involved in catalysts for hydrocracking tail oil intensive dewaxing base oils and preparation methods thereof. Background technique [0002] Hydrocracking is a key step as a lightweight of refinery heavy oil, and its apparatus is about 60% -90%, and the remaining unconverted portion is called hydrocracking exhaust. Hydrocracking tail oil is used as a raw material for the production of lubricant base oils, and has a good usability and environmental advantage due to high linear alkanes and lower sulfur and nitrogen content. In recent years, the oil production of hydrocracking tail oil is the raw material production of the oil, and the industry has changed with the demand for high-end lubricants, the traditional "old three sets" process can not meet the industrial requirements for high-end lubricants, and catalyze Death waxes have a large effect on the product viscosity inde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J29/85C10G47/18
CPCB01J29/80B01J29/005C10G47/18B01J29/44B01J29/7484B01J29/7415B01J29/7492B01J29/85B01J2229/186
Inventor 翟庆阁高杰史顺祥张景云
Owner SINOCHEM QUANZHOU PETROCHEM CO LTD
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