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Cracking catalyst preparing process

A technology of cracking catalysts and additives, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc., to achieve the effects of shortening gelation time, reducing production costs, and improving production efficiency

Inactive Publication Date: 2005-08-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In its preparation process, sulfuric acid is used as a regulator of the pH range, and the solid content of the molecular sieve slurry is 20-30% by weight, but the alumina slurry therein has not been acidified

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1-3

[0046] Get disodium edetate (analytical pure, Beijing Yili Fine Chemical Co., Ltd.) 20 grams, sodium silicate (produced by Beijing Hongxing Chemical Factory, modulus is 3.0) 40 grams, sodium hexametaphosphate (analytical pure, Produced by Beijing Chemical Reagent Company) 80 grams respectively and 4.1 kilograms, 2.8 kilograms, 2.4 kilograms of deionized water to make three parts of aqueous solution, then add 3 parts of 3.8 kilograms of kaolin respectively (dry basis weight, produced by Suzhou Kaolin Industrial Company), and stir for 1.5 hours , so that the slurry is mixed evenly, and recorded as A1, B1, C1 in turn;

[0047] 3.9 kilograms of pseudoboehmite (calculated as alumina, produced by Shandong Aluminum Plant), 3.9 kilograms of aluminum sol (calculated as alumina, produced by Qilu Petrochemical Company Catalyst Factory), 14.4 kilograms of deionized water and 600 milliliters of 36% by weight Mix hydrochloric acid to form a binder slurry after acidification, and after stirr...

Embodiment 4

[0058] Get 60 grams of sodium polyacrylate (produced by Shandong Heze Chemical Experimental Factory, molecular weight 8000-20000) and 3.4 kilograms of deionized water to make a solution, then add 6.5 kilograms of kaolin, stir for 1.5 hours, make the slurry mix evenly, and record it as E1;

[0059] Mix 1 kg of aluminum sol, 0.3 kg of pseudo-boehmite, 1 kg of deionized water and 54 ml of 36% by weight hydrochloric acid as a binder, denoted as E2;

[0060] 2.5 kilograms of REHY type molecular sieves (dry basis weight, cell constant of 24.68 nanometers, produced by Qilu Petrochemical Company Catalyst Factory) were dropped into a solution formed by 2.8 kilograms of deionized water and 20 grams of sodium polyacrylate, and the slurry was homogeneous and recorded as E3;

[0061] Mix three kinds of slurries according to the method of E1+E2+E3, and obtain catalyst C by spray drying 5 , and the relevant results are included in Tables 2 and 3.

[0062] Evaluation of catalyst heavy oil mi...

Embodiment 5

[0066] Sodium pyrophosphate (analytically pure, produced by Beijing Chemical Reagent Company) 50 grams and 2.3 kilograms of deionized water was made into a solution, then 3.5 kilograms of kaolin was added, stirred for 1.5 hours, and the slurry was mixed evenly, and was recorded as F1;

[0067] Mix 1.5 kg of pseudo-boehmite, 1.5 kg of aluminum sol, 7.2 kg of deionized water and 240 ml of 36% by weight hydrochloric acid to form a binder slurry after acidification, stir for 1.5 hours, and record it as F2;

[0068] 3 kilograms of REHY type molecular sieves and 0.5 kilograms of beta zeolite (produced by Qilu Petrochemical Company Catalyst Factory), drop into the solution that 3.9 kilograms of deionized water and 30 grams of sodium pyrophosphate form, and record as F3 after the slurry is homogeneous;

[0069] Mix three kinds of slurries according to the method of F1+F2+F3, and obtain catalyst C by spray drying 6 , and the relevant results are included in Tables 2 and 3.

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Abstract

The preparation process of cracking catalyst includes adding one additive selected from polyphosphate, phosphonate, polyamino carboxylate, homopolymer or copolymer with carboxyl chain segment into clay slurry and molecular sieve slurry, mixing with acidified adhesive slurry, and drying in conventional method or spraying drying. The said process has lowered material viscosity, raised solid content, flexible gluing mode, fastness, easy control, low power consumption and high production efficiency.

Description

technical field [0001] The invention relates to a preparation method of a cracking catalyst. Background technique [0002] For the preparation technology of cracking catalysts, how to reduce energy consumption to reduce production costs while ensuring or even improving the heavy oil cracking capacity of existing catalysts has become a top priority in catalyst research, and reducing the viscosity of water slurry and increasing the liquid-solid content of water slurry is the key One of the important means. [0003] In the prior art, a method of adding a viscosity reducer to the water slurry to reduce the viscosity of the water slurry to increase the solid content of the water slurry has been reported. [0004] USP4443553 discloses a kind of preparation method of fluidized cracking catalyst, is a kind of water slurry spray drying that contains Y type zeolite, aluminum binder and silicon source, has added a kind of general formula [Al 2 (OH) 6-Y Cl Y ] X The viscosifying ag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/04B01J37/00C10G11/05
Inventor 邱中红达志坚李才英陆友宝张万虹王振波
Owner CHINA PETROLEUM & CHEM CORP
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