A hydrocracking catalyst and a preparing method thereof

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, catalyst carriers, molecular sieve catalysts, etc., can solve the problems of high reaction temperature, poor operation flexibility, increased diesel production, etc., to improve isomerization performance and maintain uniformity , to avoid damaging effects

Active Publication Date: 2015-06-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activity and medium oil selectivity of this catalyst are significantly improved compared with the previous amorphous silica-alumina catalysts, and it has the characteristics of producing the most low-point diesel oil, but the reaction temperature is still high, and the operation flexibility is poor, which is difficult to meet the production requirements. The manufacturer needs to increase the processing capacity of the device and further increase the production of diesel oil

Method used

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  • A hydrocracking catalyst and a preparing method thereof
  • A hydrocracking catalyst and a preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Take about 3500g of the original powder of β molecular sieve, its chemical silicon aluminum SiO 2 / Al 2 o 3 The (molar ratio) ratio is 22.68, and the sodium oxide content is 0.18wt%. Put the β molecular sieve into the tube furnace, adopt the temperature program method (the heating rate is 100°C / hour), and start to introduce 100wt% water vapor when the temperature of the tube furnace rises to 300°C. 40L / h passed through the β molecular sieve, heated the tube furnace to 550°C, and the constant temperature time was 8 hours. The obtained molecular sieve is coded as BH-1, and its properties are shown in Table 1.

Embodiment 2

[0046] Get about 3500g of the former powder of β molecular sieve, with embodiment 1. Put the molecular sieve into the tube furnace, adopt the temperature program method (heating rate is 100°C / hour), and start to introduce 100wt% water vapor when the temperature of the tube furnace rises to 300°C, and the water vapor is 70L per kilogram of β molecular sieve / h passes through β molecular sieve, heats the tube furnace to 620°C, and the constant temperature time is 8 hours. The obtained molecular sieve is coded as BH-2, and its properties are shown in Table 1.

Embodiment 3

[0048] Weigh 50g of BH-1 molecular sieve into a closed flask with a reflux device, add 400ml of NaOH aqueous solution with a concentration of 0.04mol / L, the weight ratio of NaOH aqueous solution to BH-1 molecular sieve is 8:1, and keep the temperature at 95°C Stir for 2.0 hours, filter, and wash the filter cake with hot deionized water, and stop washing when the pH value of the washing liquid is close to 7. The filter cake was dried in an oven at 120° C. for 5 hours to obtain the β-type molecular sieve of the present invention, which is numbered BJ-1. The properties of the molecular sieve are shown in Table 1.

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Abstract

A hydrocracking catalyst and a preparing method thereof are disclosed. The catalyst comprises metal components with hydrogenation activity and a carrier comprising a beta molecular sieve, amorphous silicon aluminum and aluminum oxide, wherein properties of the beta molecular sieve are as follows: the specific surface area is 400-800 m2/g, the total pore volume is 0.4-0.55 mL/g, the SiO2/Al2O3 mole ratio is 30-60, the relative crystallinity is 120-140%, the infrared acid content is 0.55-1.0 mmol/g, the non-framework aluminum accounts for less than 1% of the total aluminum, the amount of medium-strong acids which is measured by a NH3-TPD method accounts for 70-85% of the total acid amount, and the percent of Na2O is not more than 0.15 wt%. The preparing method includes mixing the beta molecular sieve, the amorphous silicon aluminum and the aluminum oxide, kneading and forming to prepare the carrier; and loading the metal components with hydrogenation activity by a conventional method. The beta molecular sieve which is proper in silicon aluminum ratio, large in specific surface area, proper in acidity, reasonable in pore structure and low in content of non-framework aluminum, and the amorphous silicon aluminum are adopted as cracking components of the catalyst. The prepared catalyst is characterized by producing a clean diesel oil product with a low condensation point with the highest yield, improving properties of hydrogenation tail oil, and the like.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a hydrocracking catalyst with high activity and maximum mass production of low-condensation-point diesel oil and a preparation method thereof. Background technique [0002] Hydrocracking technology has the characteristics of strong adaptability of raw materials, great flexibility of product schemes, high selectivity of target products, good product quality, and high added value. It can directly convert various heavy and low-quality raw materials into clean fuel oil and high-quality chemical raw materials. It has become one of the most important heavy oil deep processing techniques in modern oil refining and petrochemical industries, and has been increasingly widely used in countries all over the world. As the quality of crude oil is deteriorating year by year, high-sulfur crude oil has increased significantly, and environmental protection has increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/076B01J29/06B01J32/00C10G47/20
Inventor 刘昶王凤来王珂琦杜艳泽赵红关明华
Owner CHINA PETROLEUM & CHEM CORP
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