Catalytic cracking propylene additive and preparation method thereof

A propylene additive and catalytic cracking technology, which is applied in catalytic cracking, molecular sieve catalysts, chemical instruments and methods, etc., to achieve the effects of easy operation, simple preparation process, and reduced manufacturing costs

Active Publication Date: 2011-05-11
PETROCHINA CO LTD
View PDF12 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The catalytic cracking propylene additives disclosed in the above patents are all additives containing ZSM-5, and the preparation methods have their own characteristics

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalytic cracking propylene additive and preparation method thereof
  • Catalytic cracking propylene additive and preparation method thereof
  • Catalytic cracking propylene additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This example illustrates the preparation of an aluminum phosphate sol binder for use with the additives of the present invention.

[0056] 4.39 kg of pseudoboehmite (containing Al 2 o 3 3 kilograms) and 5.4 kilograms of decationized water beating for 30 minutes, under stirring, add 10.3 kilograms of 85% concentrated phosphoric acid in the slurry, then add 5.28 kilograms of 68% concentrated nitric acid, continue to stir and react for 45 minutes, and the colorless and transparent phosphoraluminum sol is obtained. Its pH is 1.5. After analysis, this aluminum phosphate sol contains P11.1% by weight, Al 6.5% by weight, P / Al (weight)=1.77, HNO 3 The content is 11% by weight.

Embodiment 2

[0058] This example illustrates the preparation of catalytic cracking propylene additives using aluminum phosphate sol as a binder according to the present invention.

[0059] In 1.05 kg (dry basis) ZSM-5 (SiO 2 / Al 2 o 3 =28) Add 1.18 kg of water to the molecular sieve, and homogenize it with a shearing machine to make a ZSM-5 molecular sieve slurry.

[0060] In the stirring state, 1775g kaolin and 2170ml water were mixed and beaten for 30min, 1.5kg of the binder prepared according to the method in Example 1 was added to the kaolin slurry, and the stirring was continued for 1h, then the ZSM-5 molecular sieve slurry was added, and stirred for 2h, The resulting slurry had a solids content of 38% by weight. After the slurry is homogenized, it is spray-molded to obtain a catalytic cracking propylene additive containing 35% by weight of ZSM-5 molecular sieve, which is denoted as C1. The composition, physicochemical properties and microreactivity of additives are shown in Table...

Embodiment 3

[0062] This example illustrates the preparation of catalytic cracking propylene additives using aluminum phosphate sol as a binder according to the present invention.

[0063] In 1.05 kg (dry basis) ZSM-5 (SiO 2 / Al 2 o 3 =50) add 1.18 kilograms of water in molecular sieve, carry out homogenization with shearing machine, then add La (NO 3) 3 Solution (La 2 o 3 (103.13g / l) 65.5ml, stirred for 2h to make molecular sieve slurry.

[0064] Except that the above-mentioned ZSM-5 molecular sieve is used as the zeolite molecular sieve of the catalyst, the content and preparation method of the binder, molecular sieve and kaolin are exactly the same as in Example 2, and this additive is marked as C2. The composition, physicochemical properties and microreactivity of additives are shown in Table 2.

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
pore sizeaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

Abstract

The invention relates to a catalytic cracking propylene additive. The additive measured in the total weight of 100 percent is characterized by being prepared from the following components in percentage by weight: 30-80 percent of molecular sieve including 28-78 percent of ZSM-5 zeolite, 10-65 percent of clay and 5.0-20.0 percent of P2O5, preferable 7.0-15.0 percent as well as 0-1.0 percent of La2O3. Aluminum phosphate sol is adopted as an adhesive to improve the abrasive strength of the additive, improve the solid content of spraying slurry and avoid the chlorine contents of the spraying slurry and the additive. The prepared catalytic cracking propylene additive remarkably improves the activity, slightly lessens the activity of a main catalyst when mixing with the main catalyst for use, can improve the product distribution, have favorable dry gas and coke selectivity and simultaneously improve the propylene yield and the gasoline octane number.

Description

technical field [0001] The invention relates to a catalytic cracking propylene auxiliary agent and a preparation method thereof, in particular to a catalytic cracking propylene auxiliary agent using aluminum phosphate sol as a binder and a preparation method thereof. Background technique [0002] Propylene is one of the important chemical raw materials next to ethylene, and its largest use is to produce polypropylene. At present, 66% of the world's propylene is a by-product of steam cracking to produce ethylene, 32% comes from catalytic cracking (FCC) in refineries, and a small amount (about 2%) is obtained from reactions such as propane dehydrogenation. [0003] In the process of catalytic cracking, the content of propylene in the liquefied gas of the cracked product varies greatly with the difference of the cracking catalyst and process technology used. The propylene yield of a conventional catalytic cracking (FCC) unit is generally only about 4%, while the propylene yiel...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40C10G11/05
Inventor 庞新梅周志远侯凯军高晓慧王骞阎立军
Owner PETROCHINA CO LTD
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