A catalytic cracking catalyst

A catalytic cracking and catalyst technology, used in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc. Effects of increased activity and heavy oil cracking performance, high hydrothermal stability

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrothermal stability of the sulfur-reducing metal oxide modified Y-type molecular sieve prepared by the existing method is not high, and the catalytic cracking performance of the prepared catalyst is not good.

Method used

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  • A catalytic cracking catalyst
  • A catalytic cracking catalyst
  • A catalytic cracking catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] At room temperature, take 150g (dry basis) DASY (0.0) molecular sieve, mix it with 1500ml hydrochloric acid solution with a molar concentration of 1.0mol / L, stir for 30 minutes, filter, wash with 1500ml deionized water, and obtain Y molecular sieve after acid treatment. The sodium oxide content is 0.6% by weight; the Y molecular sieve obtained after the acid treatment is roasted at 300°C for 3 hours to obtain a molecular sieve with a solid content of 97% by weight, which is designated as FZ-1;

[0040] Get 12ml ethanol and add 180ml deionized water, add 5mol / L acetic acid aqueous solution 3ml, adjust solution pH value to 3.7 with 10mol / L ammonium hydroxide aqueous solution, then 30.4g Fe(NO 3 ) 3 9H 2 O was dissolved in the above buffer solution to obtain an impregnating liquid, and the above FZ-1 molecular sieve was mixed with the impregnating liquid evenly, left to stand for 12 hours, dried and roasted at 650°C and 100% water vapor for 2 hours to obtain the present i...

Embodiment 2

[0042] At room temperature, take 200g NaY molecular sieves (dry basis 75% by weight), mix them with 1500ml of hydrochloric acid solution with a molar concentration of 0.5mol / L, stir for 30 minutes, filter, and wash with 1500ml deionized water to obtain NaY molecular sieves after acid treatment. The content of sodium oxide is 1.5% by weight; the obtained NaY molecular sieve after acid treatment is roasted at 300°C for 3 hours to obtain a molecular sieve with a solid content of 96% by weight (water content 4% by weight), which is designated as FZ-2;

[0043] Get 12ml ethanol and add 180ml deionized water, add 5mol / L acetic acid aqueous solution 3ml, adjust solution pH value to 4.5 with 10mol / L ammonia water, obtain buffer solution, 37.6g Cr(NO 3 ) 3 9H 2 O is dissolved in the above buffer solution to obtain an impregnating liquid, and the above molecular sieve FZ-2 is mixed evenly with the impregnating liquid, left to stand for 12 hours, dried and roasted at 500°C and 100% water ...

Embodiment 3

[0045] Take 200g NaY molecular sieve (same as above), beat with 1500g of deionized water, add 45g of ammonium chloride and 33.5ml of RECl 3 solution (its concentration in RE 2 o 3 Calculated as 270g / L), rare earth salt (in RE 2 o 3 Calculated): ammonium salt: NaY molecular sieve: deionized water with a weight ratio of 0.06:0.3:1:10, adjust the pH value of the slurry to 3.8, heat up to 80°C for 2 hours, filter and rinse with water, and then filter the cake Baking at 600°C and 100% steam for 2 hours. The molecular sieve after roasting is mixed with the sulfuric acid solution 1500ml that the molar concentration is 0.2mol / L, stirs 30 minutes, filters, washes with 1500ml deionized water, obtains the Y molecular sieve after the acid treatment, and its sodium oxide content is 1.2% by weight; The resulting acid-treated Y molecular sieve was calcined at 350°C for 3 hours to obtain a molecular sieve with a solid content of 97% by weight, denoted as FZ-3;

[0046] Get 12ml ethanol a...

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Abstract

The invention discloses a catalytic cracking catalyst. The catalytic cracking catalyst comprises sulfur reducing metal oxide modified Y-shaped molecular sieve, clay and heat-resisting inorganic oxide, wherein the preparation method of the sulfur reducing metal oxide modified Y-shaped molecular sieve comprises the steps of processing and dewatering Y-shaped molecular through acid solution, so as to ensure that the water content in the molecular is not greater than 5 weight percent, dipping metallic compound in an ethyl alcohol-ammonium acetate-water buffer solution or in an ammonium acetate-glacial acetic acid-water buffer solution, and roasting. The catalytic cracking catalyst has high heavy oil cracking ability and high light oil yield, and enables the sulphur content in petrol to be obviously reduced.

Description

technical field [0001] The invention relates to a catalyst for catalytic cracking of hydrocarbons, in particular to a catalyst for catalytic cracking containing metal-modified Y-type molecular sieves. Background technique [0002] In recent years, global gasoline sulfur content indicators have become increasingly stringent. For example, the United States implemented the second regulation (Tier II) between 2004 and 2006, requiring the sulfur content of reconciled gasoline to be less than 30ppm, and the entire European Union adopted sulfur-free gasoline in 2009. China fully implemented the Euro III emission standard in 2010, requiring the sulfur content of gasoline to be less than 150ppm, and gradually implemented the Euro IV emission standard from 2010 to 2015, requiring the sulfur content of gasoline to be less than 50ppm. At the same time, Beijing and other cities will use ultra-low sulfur gasoline. More than 80% of the sulfur in my country's finished gasoline comes from ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/14B01J29/16B01J29/08C10G11/05
Inventor 田辉平于善青朱玉霞
Owner CHINA PETROLEUM & CHEM CORP
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