RFCC high octane gasoline additive and preparation method thereof

A high-octane gasoline and heavy oil catalysis technology, applied in catalytic cracking, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of reducing the yield of light oil and not making it public, and achieve improved reaction performance and reduced additives Carbon deposition, increase the effect of slurry solid content

Active Publication Date: 2011-05-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another type of ZSM-5 modified zeolite using low silicon (silicon-aluminum ratio less than 100), they all increase the octane number of catalytic cracked gasoline to varying degrees, but the disadvantage is that after adding additives, there will always be Reduce light oil (gasoline) yield (Method for improving olefinic gasoline product of low conversion fluid catalytic cracking. US 3,894,931, USA, 1975)
Therefore, there is no disclosed FCC gasoline octane booster technology containing BETA zeolite

Method used

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  • RFCC high octane gasoline additive and preparation method thereof
  • RFCC high octane gasoline additive and preparation method thereof
  • RFCC high octane gasoline additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This example illustrates the preparation of an aluminum phosphate sol binder for use with catalysts according to the invention.

[0064] 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, the aluminum phosphate sol contains P 11.1% by weight, Al 6.5% by weight, P / Al (weight)=1.77, HNO 3 The content is 11% by weight.

Embodiment 2

[0066] Examples 2-5 illustrate the preparation of molecular sieve cracking aids using aluminum phosphate sol as a binder according to the present invention.

[0067] In 0.70 kg (dry basis) BETA and 0.35 kg (dry basis) ZSM-5 (SiO 2 / Al 2 o 3 )=28) Add 1.18 kg of water to the molecular sieve, homogenize with a shearing machine, stir for 2 hours, and make a mixed molecular sieve slurry.

[0068] Under stirring, 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 above-mentioned ZSM-5 and BETA (ZSM -5 and BETA (1:2) mixed the molecular sieve slurry, stirred for 2 hours, and the solid content of the obtained slurry was 38% by weight. After the slurry is homogenized, it is sprayed into shape and calcined at 550° C. for 6 hours to obtain a catalytic additive containing 35% by weight of molecular sieve, which is denoted as C1. ...

Embodiment 3

[0070] First, EU-1 molecular sieves were prepared referring to Example 1 of CN101054183A (method for preparing molecular sieves with EUO structure from silicon-aluminum oxide powder). Add 60g of sodium hydroxide (96%) into water to dissolve, then add 250g of hexamethyldiammonium bromide, 25g of EUO molecular sieve powder, heat and stir at 80°C to fully dissolve and disperse, and cool to room temperature; then 180g of silicon aluminum micro Balls (SiO 2 / Al 2 o 3 =10) and 320g of white carbon black premixed materials were added to the above solution and stirred evenly; finally added to a stainless steel reactor and reacted at 170°C for 64h to obtain the former powder of EU-1 molecular sieve, the ratio of silicon to aluminum (SiO 2 / Al 2 o 3 ) is 30.

[0071] Second, preparation of H-type EU-1 molecular sieve: the above EU-1 molecular sieve raw powder was calcined in a muffle furnace at 500° C. for 6 hours. Take EU-1 molecular sieve 1000g (dry basis) after roasting and pou...

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Abstract

RFCC (Resid Fluid Catalytic Cracking) high octane gasoline additive contains the following ingredients by weight percentage taking the total weight of the additive as 100%: 5-90 of H-type (Hydrogen) composite molecular sieve, 1-60 of BETA or EU-1 molecular sieve, 1-30 of ZSM-5 molecular sieve adopting modified or non-modified chemical elements, 2-60 of clay, and 7.0-15.0 of P(calculated based on P205) wherein the precursor of the P is aluminum phosphate sol; and 2-10 of A1 and 5-15 of P are contained in the aluminum phosphate sol, and the PH value of the aluminum phosphate sol is 1.0 to 2.5; and 2-20 of the aluminum phosphate sol is calculated based on HNO3. By adopting the preparation method provided by the invention, the activity of the FCC additives is significantly enhanced; and owing to mixing use with main catalytic agent, the product distribution can be improved, the gasoline octane value is improved, and the gasoline productivity is improved at the same time.

Description

technical field [0001] The invention relates to a heavy oil catalytic cracking auxiliary agent and a preparation method thereof, specifically, it belongs to the field of petroleum processing. The additive is used in the catalytic cracking process, which is characterized by high gasoline octane number and high gasoline yield. Background technique [0002] The octane number of gasoline has always been concerned by researchers, which makes the continuous development of catalyst systems to improve the octane number of catalytic cracking process products. For example, a series of US patents 3,758,403, 3,894,931, 3,984,933, 3,894,934 and 4,309,280 relate to cracking catalysts containing ZSM-5 type zeolites as catalyst components. Because ZSM-5 is a high-silica zeolite with a five-membered ring structure and a pore size of 0.54×0.56nm, and its skeleton silicon-alumina ratio is above 12, this type of zeolite has shape-selective adsorption characteristics for normal and isomeric hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J29/70B01J29/40C10G11/05
Inventor 庞新梅周志远张莉高晓慧王宝杰高雄厚阎立军
Owner PETROCHINA CO LTD
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