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Heavy oil cracking catalyst and application thereof

A heavy oil cracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, cracking, etc., can solve the problems of poor anti-heavy metal pollution performance, insufficient total yield of gasoline, diesel and liquefied gas, and achieve anti-metal pollution Strong ability, strong anti-calcium and iron pollution ability, good coke selectivity effect

Active Publication Date: 2010-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has poor anti-heavy metal pollution performance, and the total yield of gasoline, diesel and liquefied gas is not high enough

Method used

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  • Heavy oil cracking catalyst and application thereof
  • Heavy oil cracking catalyst and application thereof
  • Heavy oil cracking catalyst and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0015] The preparation method of the modified ultra-stable Y-type zeolite comprises: mixing the hydrothermal ultra-stable Y-type zeolite prepared according to the prior art with a mixed acid solution with a concentration of 0.01-3N at a liquid-solid ratio of 20-40, Seal it, fill it with gas to make the pressure of the system 0.1-0.5MPa (gauge pressure), then keep it at 95-130°C and 0.1-0.5MPa (gauge pressure) for 5-60 minutes, then filter, wash and dry to obtain the obtained The modified ultra-stable Y-type zeolite described above; wherein, the mixed acid solution is a solution comprising an inorganic acid and an organic acid, and the ratio of the equivalent concentration of the organic acid and the inorganic acid in the solution is 2.5:1 to 1:2, preferably 2:1 to 1:1.5. The inorganic acid is one or more of sulfuric acid, hydrochloric acid, nitric acid, phosphoric acid, preferably hydrochloric acid; the organic acid is one or more of citric acid, oxalic acid, acetic acid, form...

Embodiment 1

[0029] Under stirring, in 16.7 kilograms of decationized water, add 11.3 kilograms of retort earth, after stirring for 15 minutes, add 179 grams of chemically pure hydrochloric acid (concentration is 36.5% by weight), stir for 30 minutes, add 456 grams of lanthanum chloride (LaCl 3 ·7H 2 O, produced by Beijing Chemical Reagent Company), after stirring for 60 minutes, a slurry with a solid content of 35% by weight was obtained, which was denoted as T1.

Embodiment 2

[0031] In 12.7 kg of decationized water, add 912 g of lanthanum chloride (same as above) and 200 g of titanium dioxide (produced by Beijing Chemical Reagent Company), after stirring for 10 minutes, add 10.9 kg of retort earth, stir for 30 minutes, then add 48 g of chemical Pure hydrochloric acid (concentration: 36.5% by weight) was stirred for 60 minutes to obtain a slurry with a solid content of 40% by weight, which was recorded as T2.

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Abstract

The present invention relates to a heavy oil cracking catalyst and an application thereof. The catalyst comprises Y type zeolite and modified rectorite. The preparing method of the catalyst comprises the following steps: the modified rectorite is prepared by mixing rectorite, an auxiliary, water and acid; then, the catalyst is prepared by processing the modified rectorite and the Y type zeolite by mixing, pulping and spray drying. The auxiliary is selected from one or several of the compounds of La, Co, Zn, Cu and Ti, and the Y type zeolite comprises a modified super-stable Y type zeolite of which the ratio of silicon to aluminium is from 6 to 15 and the lattice constant is from 2.440nm to 2.458nm. The pore volume of secondary pores of which the pore diameter is from 80 to 1000 in the zeolite accounts for 30 to 60% of the pore volume of all secondary pores. The catalyst has high metal pollution resistant capability, high heavy oil conversion capability and good coke selectivity. The use of the catalyst for heavy oil catalytic cracking has the advantages of high conversion rate, high petrol yield and high total yield of liquefied gas, petrol and diesel.

Description

technical field [0001] The invention relates to a heavy oil cracking catalyst, more specifically, the invention relates to a heavy oil cracking catalyst containing rector earth. Background technique [0002] The increase in the weight of raw oil and the refinery's pursuit of economic benefits require the improvement of the cracking catalyst's ability to crack heavy oil and the ability to resist heavy metal pollution. The pore diameter of the Y-type zeolite in the cracking catalyst is 0.74nm. Small and medium molecular hydrocarbons in the raw oil can enter the inner pores of the zeolite for cracking reactions, while large molecular hydrocarbons are difficult to enter the inner pores of the zeolite, so its heavy oil cracking ability is poor. In order to improve the heavy oil cracking ability of the catalyst, the matrix of the cracking catalyst usually has large pores and a certain acidity that heavy oil macromolecules can enter. Molecules then enter the more acidic zeolite po...

Claims

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Application Information

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IPC IPC(8): B01J29/08B01J29/10C10G11/05
Inventor 张蔚琳周灵萍许明德李峥田辉平朱玉霞严加松于善青
Owner CHINA PETROLEUM & CHEM CORP
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