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Hydrocarbon conversion catalyst and preparation method thereof

A catalyst and hydrocarbon technology, applied in the field of hydrocarbon conversion catalysts and their preparation, can solve the problems of insufficient gasoline yield and heavy oil conversion capacity, and achieve strong resistance to heavy metal pollution, increase economic benefits, high gasoline yield and heavy oil conversion The effect of transforming power

Active Publication Date: 2012-10-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst is used for hydrocarbon oil cracking, gasoline yield and heavy oil conversion capacity are not high enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] In the catalyst preparation method provided by the present invention, the preparation method of the double-pore structure Y-type zeolite composite material can be referred to CN 200810227657.6, including the following steps:

[0024] (1) Kaolin is roasted and dehydrated at 500-890° C., pulverized to obtain metakaolin powder with a particle size of less than 2 μm and not less than 50% by weight;

[0025] (2) Add silicon source, directing agent, sodium hydroxide solution and water to metakaolin powder to make a ratio of (1-2.5)Na 2 O:Al 2 o 3 :(4-9)SiO 2 :(40-100)H 2 O (molar ratio) reaction raw material mixture, wherein the weight ratio of directing agent and metakaolin is 0.1-1.0: 1;

[0026] (3) The reaction raw material mixture is crystallized at 50-98° C. with programmed temperature increase in stages and variable speed, filtering, washing and drying to obtain a NaY-type zeolite composite material product with a double-pore structure.

[0027] Wherein, the kaoli...

Embodiment 1

[0053] This example illustrates the double-pore structure Y-type zeolite composite material in the catalyst provided by the present invention and its preparation method.

[0054] The preparation of directing agent: get 250 grams of sodium silicate solution (the SiO that contains 20.05% by weight 2 , 6.41 wt% Na 2 (0), slowly add 120 grams of sodium metaaluminate solution (containing 3.15% by weight of Al 2 o 3 , 21.1 wt% Na 2 O), stirred for 1 hour, and aged at 26° C. for 24 hours to obtain a directing agent. The composition of the directing agent is 16Na 2 O:Al 2 o 3 : 15SiO 2 : 320H 2 O (the same below).

[0055] Kaolin with an average particle size of 4 μm (Suzhou, Yangshan brand, China Kaolin Company, crystal content is 80% by weight) was roasted at 800 ° C for 4 hours to obtain metakaolin powder, which was pulverized to make a powder with a particle size of less than 2.0 μm. Less than 50% metakaolin powder.

[0056] Get 500 grams of pulverized metakaolin powder...

Embodiment 2

[0058] This example illustrates the double-pore structure Y-type zeolite composite material in the catalyst provided by the present invention and its preparation method.

[0059] Get the metakaolin powder after 500 gram embodiment 1 pulverizations, add 2500 gram sodium silicate solutions (containing the SiO of 20.05% by weight) under stirring 2 , 6.41 wt% Na 2 (2), 200 grams of the directing agent described in Example 1, 120 grams of concentration is 30% by weight of sodium hydroxide solution, 1000 grams of deionized water. Raise the temperature to 75°C and stir for 2 hours at a stirring speed of 1000 rpm, and keep the temperature at 75°C for 8 hours; raise the temperature to 90°C with stirring, and crystallize at a constant temperature for 28 hours at a stirring speed of 200 rpm. After the crystallization is completed, the crystallization tank is cooled, filtered, washed with water until the pH value of the washing solution is less than 10, and dried at 120° C. for 2 hours t...

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Abstract

The invention provides a hydrocarbon conversion catalyst which contains 1-60wt% of dual-porous structural Y-type zeolite composite material, 5-99wt% of heat-resistant inorganic oxide and 0-70wt% of clay, wherein, the dual-porous structural Y-type zeolite composite material contains Y-type zeolite and an amorphous matrix, the secondary structure thereof is spheroidal and is provided with slits andholes, and the spheroidal structure is internally provided with a nest channel; and granularity of the material is 3000-25000nm, superficial area is 280-800m<2> / g obtained by a BET method and total pore volume is 0.35-0.45ml / g, and volume of medium and large-sized pores of 1.7-300nm is 0.05-0.15ml / g which accounts for 20-35% of the total pore volume. The preparation method of the catalyst comprises the steps of mixing, pulping and drying the dual-porous structural Y-type zeolite composite material, the inorganic oxide and the clay. The catalyst obtained by the method has good selectivity of coke and gasoline and strong heavy oil cracking capability.

Description

technical field [0001] The invention relates to a hydrocarbon conversion catalyst and a preparation method thereof. Background technique [0002] The oil refining industry has developed into the 21st century, and still maintains its dominant position in energy utilization. Economic development and environmental protection have continuously put forward higher requirements for catalytic cracking technology. Deep processing, more refining residues, and increasing the yield of light oil products have become unremitting pursuits. Catalyst, as the core technology of catalytic cracking, has become a breakthrough in the progress of catalytic cracking technology. [0003] In the field of catalytic cracking catalysts, Y-type zeolite is the main active component. Usually the method for preparing NaY type zeolite is to use alkaline silica-alumina gel system to synthesize, and the raw materials used are water glass, aluminum sulfate, sodium metaaluminate, directing agent, etc. The zeoli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08B01J29/80B01J35/08B01J35/10B01J37/00C10G11/05
Inventor 陈振宇周继红王振波任飞朱玉霞罗一斌田辉平张久顺
Owner CHINA PETROLEUM & CHEM CORP