Method for reducing content of sulfur oxides in catalytic cracking smoke

A technology of sulfur oxides and catalytic cracking, which is applied in the refining and cracking process treatment of multi-stage series connection, petroleum industry, water treatment and refining, etc. Sulfur oxide content, low cost effect
CN102453513BActive Publication Date: 2014-03-05CHINA PETROLEUM & CHEM CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2014-03-05

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Abstract

The invention which relates to a method for reducing the content of sulfur oxides in a catalytic cracking smoke belongs to the technical field of petroleum refining catalytic cracking. The method comprises the following steps: 1, homogeneously emulsifying a catalytic cracking raw material under conditions that the pressure is normal, the temperature is 50-90DEG C, the water addition amount is 1-13%, the multifunctional compound emulsifier addition amount is 0.01-2% and the stirring speed is 20000-30000r / min; and 2, directly catalyzing the obtained emulsified raw oil which is used as a catalytic raw material. By adopting above heavy oil catalytic cracking raw material emulsification technology disclosed in the invention, the catalytic feeding material atomization degree is improved, the dispersibility of the catalytic feeding material is improved, and the particle size of feeding oil drops is greatly reduced, thereby purposes that the light oil yield and the total liquid yield are improved and the content of the sulfur oxides in the smoke is reduced can be reached, and the method has the advantages of small investment, low cost and convenient operation.
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Description

technical field

[0001] The invention relates to a method for reducing the content of sulfur oxides in flue gas from catalytic cracking, belonging to the technical field of catalytic cracking in petroleum refining. Background technique

[0002] Environmental pollution is one of the issues that people are generally concerned about today. With the increasingly stringent environmental protection laws, it is necessary to reduce the emission of sulfur oxides from various devices including catalytic cracking (FCC) devices. At the same time, the sulfur content of catalytic cracking raw materials is getting higher and higher. Therefore, how to reduce the emission of sulfur oxides in FCC units has become a hot issue in the research of major refineries in the world.

[0003] In the catalytic cracking process, the raw oil contains a certain amount of sulfur, and in the reactor, about 50% of the sulfur is converted into H 2 S gas, about 30% to 45% of the sulfur remains in the liquid pro...

Claims

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