Compound type cracking catalyst and preparation method thereof

A catalytic cracking and catalyst technology, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve the problem of in-situ crystallization of Y-type zeolite matrix composite materials binary composite, in-situ crystallization type catalyst activity The components and substrates are poorly modulated, and the anti-heavy metal pollution ability needs to be improved, so as to achieve the effect of excellent anti-heavy metal pollution ability and heavy oil cracking ability, excellent comprehensive catalytic cracking performance, and good coke selectivity.

Inactive Publication Date: 2011-07-27
EAST CHINA UNIV OF SCI & TECH +1
View PDF6 Cites 46 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantage is that the in-situ crystallization type catalyst active component and matrix modulation are poor, and it is difficult to assemble a variety of functional molecular sieves, especially different types of Y-type molecular sieves and MFI structure shape-selective molecular sieves in the same particle, so the application effect and scope have more limitations
[0003] CN1334142A uses kaolin as a raw material, roasts kaolin at high temperature to obtain high-temperature roasted soil and metakaolin respectively, and mixes the two roasted soils, and in-situ hydrothermal crystallization under hydrothermal conditions to obtain a crystal with a NaY molecular sieve content of 40-90%. The product is then modified by ammonium, rare earth exchange and roasting to obtain different types o

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Get 60kg of raw kaolin powder (dry basis) and roast at 960°C for 3 hours in a muffle furnace to obtain high-temperature roasted soil, and get another 30kg of raw kaolin powder (dry basis) and roast at 800°C for 3 hours in a muffle furnace to obtain metakaolin. 210L water glass (SiO 2 250g / L, modulus 3.3), 36L guiding agent (15SiO 2 ·Al 2 o 3 16Na 2 O·320H 2 (2), 57L lye (containing 30% NaOH), 45L deionized water and the above-mentioned two kinds of calcined soil were added to the crystallization kettle, and the temperature was raised to 98° C. for constant temperature crystallization for 28 hours. After the crystallization was completed, the mother liquor was filtered and washed. The filter cake is dried to obtain a crystallized product which is NaY molecular sieve / matrix composite material, which contains 72% NaY zeolite as determined by X-ray-diffraction method.

Embodiment 2

[0028] Get the NaY molecular sieve / matrix composite material (dry basis) 10kg that embodiment 1 prepares, press composite material dry basis: NH 4 NO 3 :H 2 Add water and ammonium nitrate at a mass ratio of O=1.0:0.5:6, adjust the pH to 3.5-4.0, raise the temperature to 90°C, perform ion exchange at a constant temperature for 1.0 hour, filter, wash with water, and filter again. The wet filter cake is placed in a crucible with a lid at 550 Calcined at ~580°C for 3 hours to obtain HNaY molecular sieve / matrix composite material.

Embodiment 3

[0030] Get the NaY molecular sieve / matrix composite material (dry basis) 5kg that embodiment 1 prepares, press composite material dry basis: RECl 3 :H 2 Add water and mixed rare earth chloride at a mass ratio of O=1.0:0.19:10, adjust the pH to 3.5-4.0, raise the temperature to 90°C, conduct constant temperature ion exchange for 1.0 hour, filter, wash with water, filter again, dry at 120°C and Calcined at 550-600°C for 2 hours to obtain ReNaY molecular sieve / matrix composite material.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a compound type cracking catalyst which contains the following materials according to dry basis mass: 20-70% of in-situ crystallization Y-shaped molecular sieve/matrix composite material, 0.3-12% of MFI structural molecular sieve, and 30-75% of clay and inorganic oxide bonding agent. The in-situ crystallization Y-shaped molecular sieve/matrix composite material is the matrix formed after the in-situ crystallization is conducted on kaolin, and is one or a mixture of REY, REHY, HY, REUSY and USY formed by modification of Nay combined by surface in-situ crystallization. The catalyst has excellent capability of resisting heavy metal pollution and heavy oil cracking, and good coking selection.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof, in particular to a composite catalytic cracking catalyst containing an in-situ crystallized Y-type molecular sieve / matrix composite material and an MFI structure shape-selective molecular sieve and a preparation method thereof. Background technique [0002] Catalytic cracking is one of the most important processes in petroleum refining, and catalytic cracking catalyst is the core of the process. The main active component of catalytic cracking catalyst is Y-type molecular sieve. Its main auxiliary active component is a shape-selective molecular sieve with MFI structure, which is used to increase the yield of liquefied gas and propylene and to increase the octane number of catalytic gasoline. These two types of active components can be in the same granule or different granules, and the former has a better cracking synergistic effect. As far as the Y-type molecular ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J29/80B01J29/08B01J29/40C10G11/05
Inventor 陆善祥冯水利陈辉雷芳芳张玉良蒋德超
Owner EAST CHINA UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap