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Catalytic cracking catalyst, preparation and application thereof

A catalytic cracking and catalyst technology, used in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problems of inability to supplement silicon and limited aluminum extraction, and achieve improved coke selectivity, increased liquid yield, zeolite The effect of strong cracking ability of macromolecules

Active Publication Date: 2010-06-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rare earth ultra-stable Y-type zeolite is prepared by hydrothermal-chemical aluminum extraction method, the degree of aluminum extraction is limited, and there is no way to supplement silicon

Method used

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  • Catalytic cracking catalyst, preparation and application thereof
  • Catalytic cracking catalyst, preparation and application thereof
  • Catalytic cracking catalyst, preparation and application thereof

Examples

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preparation example Construction

[0031] In the catalyst preparation method provided by the present invention, the mixing and beating of REUSY zeolite with high silicon-aluminum ratio and inorganic oxide binder and spray drying can be carried out according to existing methods, for example, according to the methods disclosed in patents CN97120271.0 and ZL200410029876.5 conduct. It usually includes steps such as mixing zeolite with a substrate, beating to prepare a slurry, and then spray-drying the slurry to form a shape. The catalyst obtained after spray-drying can also be washed, dried, and roasted. These preparation steps are well known to those skilled in the art, and the present invention has no special Require.

[0032] In the catalyst application method provided by the present invention, the catalytic cracking conditions are well known to those skilled in the art, and there is no special requirement in the present invention. The heavy oils are, for example, vacuum gas oil, atmospheric residue, vacuum res...

Embodiment 1

[0036] This example illustrates the preparation of the high-silicon-aluminum ratio rare earth ultrastable Y zeolite of the present invention.

[0037] Get 3 kilograms (dry basis) NaY zeolite (Sinopec Catalyst Qilu Branch Company produces, NaY 2 O 14% by weight, relative crystallinity 90%, unit cell constant 2.465nm), after beating with 45 kilograms of decationized water, add 3.0 kilograms of NH 4 Cl, heat up to 90°C, carry out ion exchange for 60 minutes, filter and wash with water, and roast the filter cake at 600°C and 100% water vapor for 2 hours to make a calcined zeolite NaHY, whose Na 2 The O content is 4.5% by weight.

[0038] Beat the above NaHY zeolite with 60 kg of decationized water, add 0.3 kg of NH 4 Cl, under stirring, add 12% by weight of fluorosilicic acid solution to make H 2 SiF 6 : Zeolite=0.05, adjust the pH value of the slurry to 3.0 with 3N hydrochloric acid, then heat up to 60°C, react for 45 minutes, filter, wash with water, and make zeolite M 1 . ...

Embodiment 2

[0042] This example illustrates the preparation of the high-silicon-aluminum ratio rare earth ultrastable Y zeolite of the present invention.

[0043] The preparation method is the same as in Example 1, and the preparation conditions are shown in Table 1, and the rare earth-containing ultrastable Y-type zeolite B is prepared.

[0044] The chemical composition and main physicochemical properties of zeolite B are shown in Table 2.

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Abstract

The invention provides a catalytic cracking catalyst, a preparation method and an application method thereof. The catalyst contains high silica-alumina ratio REUSY zeolite prepared by a liquid-phase villiaumite method. The method for preparing the zeolite comprises: allowing NaY zeolite and inorganic ammonium salt solution to be in contact for ion exchange and washing; ensuring that the Na2O content of zeolite is lower than 6 weight percent; roasting the obtained product in a 100 percent steam atmosphere; allowing the obtained product to be in contact with fluosilicic acid solution for liquid-phase aluminum-pumping silicon-replenishing reaction; allowing the obtained product filtered and washed to be in contact with rare earth salt solution for ion exchange. The catalyst is used for heavy oil catalytic cracking, and has good capability of cracking heavy oil macromolecules, performance of reducing the olefin content of gasoline and performance of increasing the isoparaffin content of gasoline.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and its preparation and application method. Background technique [0002] With the increasingly inferior quality of crude oil in the world, the catalytic cracking raw materials are becoming worse and worse, which puts forward higher requirements on the cracking catalyst's heavy oil cracking performance, coke selectivity and anti-Ni, V and other heavy metal pollution performance. In addition, for the purpose of environmental protection, the quality requirements of gasoline products in various countries are constantly upgrading, and the restrictions on the content of olefin components in gasoline are becoming more and more stringent. It has good performance of reducing olefin content in gasoline. [0003] Y-type zeolite is the main active component of the cracking catalyst, and its performance level is very important for the heavy oil cracking performance, coke selectivity, anti-Ni, V and other heav...

Claims

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Application Information

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IPC IPC(8): B01J29/08C10G11/05
Inventor 蒋文斌罗一斌沈宁元朱玉霞宋海涛陈蓓艳范玉华
Owner CHINA PETROLEUM & CHEM CORP
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