Catalytic cracking catalyst and preparation method thereof

A catalytic thermal cracking and catalyst technology, which is applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., can solve problems such as unsatisfactory effects, and achieve good anti-calcium pollution performance, good sphericity, and high ethylene yield. Effect

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these catalysts are not ideal against contamination by metals such as iron

Method used

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  • Catalytic cracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] (1) 17.0Kg halloysite (industrial product of Suzhou China Clay Company, solid content 72.3% by weight) was roasted at 800° C. for 1.5 hours, then mixed with 48.0 Kg decationized water, beating to obtain kaolin slurry;

[0032] (2) 20Kg decationized water is mixed with 11.9Kg pseudo-boehmite (industrial product of Shandong Aluminum Plant, solid content 63m%), beating, and its pH value is adjusted to 3 with hydrochloric acid;

[0033] (3) 5.19Kg of ZrOCl 2 (where ZrO 2 Content is 36% by weight, technical grade, product of Zibo Huantuo Chemical Co., Ltd.) and deionized water are mixed to prepare ZrOCl 2 Concentration is the solution of 1.0mol / L, add ammoniacal liquor (Beijing Chemical Plant, concentration 25% by weight) under stirring to pH value 9, then aged 26 hours at 25 ℃, under stirring, filter to get ZrO(OH) 2 Gel, washed with deionized water until no Cl was detected in the washing solution after washing - , dried at 120°C for 24 hours, and calcined at 550°C for 2...

example 2

[0040] (1) Get 11.4Kg hallowed kaolin (industrial product of Suzhou China Clay Company, solid content 72.3% by weight) and roast at 700°C for 2 hours, mix with 48.0Kg decationized water, beating, and make kaolin slurry.

[0041] (2) 20Kg decationized water is mixed with 11.9Kg pseudo-boehmite (industrial product of Shandong Aluminum Plant, solid content 63m%), beating, and its pH value is adjusted to 2.5 with hydrochloric acid;

[0042] (3) 6.87Kg zirconium oxychloride (zirconia content is 36% by weight, industrial grade, Zibo Huantuo Chemical Co., Ltd.) is mixed with deionized water to make ZrOCl 2 A solution with a concentration of 1.5 mol / L, under stirring, was added ammonia water (Beijing Chemical Plant, 25% by weight) to a pH value of 10, then aged at 30°C for 16 hours with stirring, and filtered to obtain ZrO(OH) 2 Gel, washed with deionized water until Cl-free in the washed water - Detected, dried at 115°C for 26 hours, and calcined at 600°C for 5 hours to obtain 2.47 ...

Embodiment 3～4

[0054] On a small-scale fixed fluidized bed device, take 30m% residual oil + 70m% wax oil (see Table 2 for properties) as raw material, and add iron naphthenate to it, so that 0.5% by mass of iron is contained in the raw material oil, and the catalyst sample A~B were evaluated, the reaction temperature was 640°C, the weight ratio of agent to oil was 15, the mass ratio of water to oil was 35:1, and the weight hourly space velocity was 10h -1 . The catalyst sample was treated with 100% steam at 800°C for 17 hours in advance, and the loading amount was 240 grams. The evaluation results are shown in Table 3.

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Abstract

The invention provides a catalytic cracking catalyst and a preparation method thereof. The preparation method comprises the following steps of: mixing and pulping zirconium oxide powder and roast kaolin slurry; mixing and pulping an aluminum adhesive; introducing zirconium oxide powder and a molecular sieve into the slurry, regulating the pH value of the slurry to be 2-5, and drying, wherein the zirconium oxide powder is prepared from an aqueous solution of zirconium salt and ammonia water, and the pH value of the obtained suspension is controlled to b3e 9-12; and aging, filtering, washing, drying and roasting at the temperature of between 500 and 700DEG C. The zirconium-containing catalyst prepared by the method has high wear resistance, crystallinity and resistance to contamination of metals such as iron and the like, is used for a catalytic thermal cracking process and ensures high yield of ethylene and propylene.

Description

technical field [0001] The invention relates to a catalytic thermal cracking catalyst and a preparation method thereof. Background technique [0002] Low-carbon olefins such as ethylene, propylene and butene are important petrochemical raw materials and the most basic organic synthesis raw materials. The current methods of producing light olefins include steam cracking using natural gas as raw material, tube furnace thermal cracking using naphtha or light diesel oil as raw material, heat carrier cracking of heavy hydrocarbons, and catalytic cracking (cracking) of heavy hydrocarbons , Catalytic conversion of low-carbon alcohols. Due to the tight supply of light hydrocarbon raw materials, the production of light olefins by FCC units has grown rapidly. [0003] There are roughly three types of catalysts used in the preparation of light olefins from petroleum hydrocarbons by catalytic cracking or cracking methods: one is metal-supported catalysts based on oxides, and the other...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80C10G11/05
Inventor 周治许昀田辉平刘宇键赵留周任飞
Owner CHINA PETROLEUM & CHEM CORP
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