Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalytic cracking additive for increasing propylene production and preparation method thereof

A technology of catalytic cracking additives and additives, which is applied in catalytic cracking, hydrocarbon cracking, hydrocarbon production, molecular sieve catalysts, etc. It can solve the problems of reduced reaction selectivity, reduced effective reaction area of ​​molecular sieves, and reduced reactive activity of molecular sieves. Effect of Yield and Propylene Selectivity, Good FCC Performance

Active Publication Date: 2020-07-03
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although IM-5 molecular sieve can have high alkane cracking ability, it is the same as other ten-membered ring molecular sieves. Due to its narrow pore structure, it is difficult for larger reactant molecules such as polycyclic hydrocarbons to enter the crystal pore for reaction, reducing the The effective reaction area of ​​the molecular sieve reduces the reactivity of the molecular sieve; on the other hand, larger product molecules such as isoparaffins and aromatics are not easy to diffuse out of the pores of the molecular sieve, which causes secondary reactions such as excessive hydrogen transfer and coking, which lead to Molecular sieve deactivation, reduced reaction selectivity

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 additive for increasing propylene production and preparation method thereof
  • Catalytic cracking additive for increasing propylene production and preparation method thereof
  • Catalytic cracking additive for increasing propylene production and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0030] A specific embodiment, based on the dry basis weight of the phosphorus-aluminum inorganic binder, the phosphorus-aluminum inorganic binder includes Al 2 o 3 15-40% by weight aluminum component, with P 2 o 5 45-80% by weight of the phosphorus component and 0-40% by weight of the first clay based on dry weight, and its P / Al weight ratio is 1.0-6.0, the pH value is 1-3.5, and the solid content is 15- 60% by weight; for example including Al 2 o 3 15-40% by weight aluminum component, with P 2 o 5 A phosphorus component of 45-80% by weight and a first clay of 1-40% by weight on a dry basis; preferably containing Al 2 o 3 15-35% by weight of the aluminum component, as P 2 o 5 50-75% by weight of the phosphorus component and 8-35% by weight of the first clay on a dry basis, the P / Al weight ratio is preferably 1.2-6.0, more preferably 2.0-5.0, and the pH is preferably 1.5 -3.0.

[0031] Another specific embodiment, based on the dry basis weight of the phosphorus-alumi...

Embodiment 1

[0074] Filter the mother liquor from the crystallized IM-5 molecular sieve (produced by Changling Catalyst Factory, the same below), wash with water, filter and dry; roast the above-mentioned dried molecular sieve in air for 6 hours at a roasting temperature of 550°C to remove the A template agent to obtain a molecular sieve with a sodium-type IMF structure.

[0075] Add 10 times of water and 0.5 times of ammonium chloride to sodium-type IMF structure molecular sieve for the first ammonium exchange treatment. The exchange temperature is 90°C and the exchange time is 2h. , rinsing, and drying to obtain an ammonium-exchanged molecular sieve with a sodium content of less than 0.2% by weight.

[0076] The ammonium-exchanged molecular sieve was hydrothermally calcined at 500° C. for 2 hours in 100% steam to obtain the hydrothermally calcined molecular sieve.

[0077] Take 100 g of hydrothermally roasted molecular sieve (dry basis) and add water to prepare a molecular sieve slurry ...

Embodiment 2

[0090] The crystallized IM-5 molecular sieve was filtered to remove the mother liquor, washed with water, filtered and dried; the above-mentioned dried molecular sieve was roasted in the air for 6 hours at a roasting temperature of 550°C to remove the template agent and obtain a sodium-type IMF structure molecular sieve.

[0091] Add 10 times of water and 0.5 times of ammonium chloride to the sodium-type IMF structure molecular sieve for the first ammonium exchange treatment. The exchange temperature is 70°C and the exchange time is 1h. After the exchange, filter, take the above filter cake and repeat the exchange once and filter , rinsing, and drying to obtain an ammonium-exchanged molecular sieve with a sodium content of less than 0.2% by weight.

[0092] The ammonium-exchanged molecular sieve was hydrothermally calcined at 600° C. for 2 hours under 100% steam to obtain the hydrothermally calcined molecular sieve.

[0093] Take 100 g of hydrothermally roasted molecular sieve...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The present discloses a catalytic cracking aid for increasing propylene yield, and a preparation method thereof, wherein the catalytic cracking aid comprises 10-75 wt% of a mesopore-rich IMF structuremolecular sieve (calculated as the dry base weight), 3-40 wt% of a phosphorus-aluminum inorganic binder (calculated as the dry base weight), 1-30 wt% of other inorganic binder (calculated as the oxide), 0-60 wt% of second clay (calculated as the dry base weight), and 0.5-15 wt% of at least a metal additive (calculated as the oxide) selected from a group VIII metal, manganese, zinc and gallium byusing the dry base weight of the catalytic cracking aid as the reference. According to the present invention, the catalytic cracking aid can effectively improve propylene yield and propylene selectivity in the catalytic cracking.

Description

technical field [0001] The disclosure relates to a catalytic cracking additive for increasing propylene production and a preparation method thereof. Background technique [0002] For a long time, ethylene, propylene and butene have been the basic organic chemical raw materials for synthetic resin, synthetic fiber and synthetic rubber, among which propylene is an important raw material for the manufacture of petrochemical products after ethylene. At present, the largest source of propylene at home and abroad is the main by-product of thermal cracking to produce ethylene. The second largest source of propylene is almost all from FCC units, which provide about 30% of the demand. In the United States, FCC units provide petrochemical products for propylene. About half of the demand. [0003] Due to the rapidly growing demand for polypropylene, the demand for propylene in the petrochemical industry is faster than that for ethylene, and the construction of ethylene plants is limit...

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 Patents(China)
IPC IPC(8): B01J29/40B01J29/48C07C4/06C07C11/06C10G11/05
CPCB01J29/40B01J29/405B01J29/48C07C4/06C10G11/05C10G2400/20C07C11/06Y02P20/52
Inventor 朱玉霞任飞罗一斌刘倩倩田辉平欧阳颖
Owner CHINA PETROLEUM & CHEM CORP