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Preparation method of fluid catalyst

A fluidized bed catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of poor fluidization effect and poor wear resistance, and achieve good fluidization effect, Not easy to stratify or settle, the effect of uniform slurry

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problem of poor fluidization effect and poor wear resistance of molecular sieve fluidized bed catalysts existing in the prior art, and a new method for fluidized bed catalysts is provided

Method used

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  • Preparation method of fluid catalyst
  • Preparation method of fluid catalyst

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Experimental program
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Effect test

Embodiment 1

[0014] Weigh 500 grams of kaolin and 2 grams of safflower powder, mix evenly, add 2000 grams of distilled water, shear at high speed with a high-speed shear for 30 minutes, then add 400 grams of ZSM-5 molecular sieve with a silicon-aluminum molecular ratio of 30, and then high-speed shear Cut for 30 minutes, then add 500 grams of aluminum sol containing 20% ​​by weight of alumina, continue high-speed shearing for 30 minutes, then add 1 gram of triammonium citrate, continue high-speed shearing for 30 minutes, and measure the suspension with a laser particle size analyzer The particle size, the average particle size is 2 microns. Spray molding with a spray dryer, the spray molding conditions are: inlet temperature 240°C, outlet temperature 120°C, centrifugal speed 10000 rpm, cyclone pressure difference at the outlet is 0.7KPa, feed rate is 1 kg / hour. The spray-molded particles were calcined by temperature programming at 400°C for 3 hours, and then at 650°C for 3 hours. The cata...

Embodiment 2～10

[0016] According to the method of Example 1, using the ingredients and preparation conditions in Table 1, wherein the silica sol contains 40% by weight of silicon dioxide, the performance of the prepared fluidized bed catalyst is shown in Table 1.

Embodiment 11

[0018] Get the method for 200 grams of embodiment 1 to make fluidized bed ZSM-5 catalyst, put into inner diameter and be the fluidized bed reactor of 50 millimeters, adopt the component that Shanghai Gaoqiao petrochemical company produces is C 4 ~C 10 The light oil is used as the raw material (see Table 3 for the physical properties of the raw material), and the activity of the catalyst is evaluated. The reaction temperature range is 680°C, the reaction pressure is 0.02MPa, and the weight space velocity is 1 hour -1 , water / feedstock oil weight ratio is 1: 1 under evaluation, obtains ethylene weight yield and is 28%, and propylene weight yield is 22%, and total diene weight yield is 50%.

[0019]

[0020]

[0021] Table 3 Indicators of Light Oil Raw Materials

[0022] project

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Abstract

The invention relates to a preparation method of a fluid catalyst, and mainly solves the problem of low wear resistance of fluid catalysts in existing technologies. The method comprises the following steps of: (a) mixing a molecular sieve, a binder, a matrix material, a pore-expanding agent, a dispersing agent and a liquid medium uniformly so as to form a suspension; (b) controlling the particle size of materials in the suspension ranging from 0.1 to 5 micrometers; (c) conducting spray drying to the suspension so as to form a microsphere catalyst; (d) roasting the microsphere catalyst, thus obtaining a finished catalyst. The technical method provided in the invention well solves the above problem, and can be used in the reaction process of carbon olefin production through light oil catalytic pyrolysis.

Description

technical field [0001] The invention relates to a preparation method of a fluidized bed catalyst, in particular to a preparation method of a molecular sieve fluidized bed catalyst used in the reaction of light oil catalytic cracking to produce light olefins. Background technique [0002] As the leader of the petrochemical industry, the ethylene propylene industry plays a pivotal role in the development of the national economy. With the development of society, the market demand for ethylene propylene in my country has increased sharply, the import volume of ethylene propylene and its downstream products has increased year by year, and the market share of domestic products is less than half. Ethylene and propylene can be used to produce plastics and other chemical products, and are important organic chemical raw materials. With the progress and development of modern society, their demand is increasing. At present, more than 98% of the world's ethylene production comes from st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/40B01J37/00C07C4/06C07C11/04C07C11/06
CPCY02P20/52
Inventor 马广伟肖景娴
Owner CHINA PETROLEUM & CHEM CORP
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