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Assitants for catalyzing cyacking of reducing gasoline sulphur content, preparation process and application thereof

A technology of catalytic cracking additives and sulfur content, which is applied in catalytic cracking, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve problems such as reducing gasoline sulfur content

Active Publication Date: 2008-07-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent CN1210031 discloses a modification method of kaolin used as catalyst carrier for hydrocarbon catalytic cracking. The mixture of kaolin and ammonium sulfate is roasted at a temperature of 250-500°C for more than 15 minutes, and then washed with water to obtain the modified The cracking catalyst made of kaolin has higher heavy oil conversion capacity, higher activity and gasoline selectivity, but does not have the effect of reducing gasoline sulfur content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 10Kg (dry basis) of hydrated kaolin was added with water to make a slurry with a solid content of 35%, and 0.53Kg of sodium silicate was added as a dispersant for spray molding to obtain 8.5Kg of spray microspheres. The sprayed microspheres were calcined in a muffle furnace at 940° C. for 3 h to obtain the calcined microspheres. In a stirring state, 5 L of deionized water and 1000 g of roasted microspheres were successively put into a stainless steel reactor, 300 g of sodium hydroxide was added, the temperature was raised to 90° C. and kept at a constant temperature for 3 h, filtered and washed to obtain a filter cake. While stirring, put 5 L of deionized water and the above filter cake into the stainless steel reactor successively, add 200 ml of 36.5% hydrochloric acid and 100 g of ammonium chloride, raise the temperature to 90° C. and keep the temperature constant for 0.5 h. Sodium oxide content in the microsphere obtained after treatment is 0.60%, zinc nitrate 22g, g...

Embodiment 2

[0038] 10Kg (thousand bases) hydrated kaolin is added with water to make a slurry with a solid content of 20%, and 0.2Kg sodium hydroxide, 0.2Kg sodium pyrophosphate, and 0.1Kg sodium hexametaphosphate are added as a dispersant, and sprayed into microspheres to obtain 8Kg of spray microspheres. The sprayed microspheres were calcined in a muffle furnace at 1000°C for 1 h to obtain the calcined microspheres. Under stirring, 5 L of deionized water and 1000 g of roasted microspheres were successively put into a stainless steel reactor, 500 g of potassium hydroxide was added, the temperature was raised to 90° C. and kept at a constant temperature for 2 h, filtered and washed to obtain a filter cake. In a stirring state, 5 L of deionized water and the above filter cake were successively put into a stainless steel reactor, 200 g of acetic acid and 100 g of ammonium sulfate were added, and the temperature was raised to 90° C. and kept at a constant temperature for 1 h. The content of...

Embodiment 3

[0040] The sprayed microspheres obtained in Example 1 were calcined in a muffle furnace at 750° C. for 3 h to obtain calcined microspheres. Under stirring, 1 L of deionized water and 1000 g of roasted microspheres were successively put into a stainless steel reactor, 4 L of 1M sulfuric acid was added, the temperature was raised to 90° C. and kept at a constant temperature for 1 h, filtered and washed to obtain a filter cake. The content of sodium oxide in the filter cake microspheres obtained after treatment is 0.20%, and then 600g of the microspheres, 24g of nickel nitrate, 20g of copper nitrate, 10g of titanium sulfate, and 2000ml of deionized water are put into a stainless steel reactor at a constant temperature of 90°C. Exchanging for 1h, the auxiliary agent C of the present invention was obtained.

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Abstract

A catalytic cracking assistant for decreasing the sulfur content in the gasoline and its preparation method are disclosed. It doesn't contain the component of zeolite, and it makes from the kaolin which is pulped by addition of water, then the pulp is spray to the micro balloons which are calcined to balloons, extracted by the acid or alkali and through ion-exchange to decrease the sodium content. The characteristic of it is that the sodium oxide content is lower than 0.75%, at the same time it contains one or many element modifier of Cu, Zn, Fe, Ni, Ca, Ti and V the content of which is 0.1-6%. This assistant can be blended with the original FCC catalyst in the catalytic cracking reaction, and this can decrease the sulfur content in gasoline, the catalytic cracking choose ability is good, the preparation cost is low.

Description

technical field [0001] The present invention relates to a catalytic cracking additive for reducing the sulfur content of gasoline, a preparation method and application thereof, more specifically, a catalytic cracking additive which does not contain zeolite and is prepared with kaolin as a raw material and has the ability to reduce the sulfur content of gasoline and its In the preparation method, the catalytic promoter can be mixed with common FCC catalysts and used in the catalytic cracking process. Background technique [0002] With the increasingly stringent environmental protection regulations, countries have successively formulated new standards for gasoline, especially limiting the content of sulfur and olefins. Catalytic cracking is one of the main means of petroleum processing, and FCC gasoline accounts for more than 80% of the total finished gasoline. Therefore, reducing the sulfur content of catalytic cracking gasoline is the key to reducing the sulfur content of ga...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/16C10G11/02
Inventor 庞新梅孙书红高雄厚谭争国陆通刘从华
Owner PETROCHINA CO LTD
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