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Method for refining catalytic gasoline

A technology of catalytic cracking gasoline and a refining method, which is applied in the field of refining catalytic cracking gasoline to remove hydrogen sulfide and mercaptan sulfur, and can solve the problems of undisclosed activator active components, etc.

Active Publication Date: 2005-09-21
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention does not disclose the active agent and its active components, the solid alkali of the solid alkali washing tower and the catalyst of the oxidation deodorization tower are also undisclosed

Method used

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  • Method for refining catalytic gasoline
  • Method for refining catalytic gasoline
  • Method for refining catalytic gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] FCC gasoline feed containing hydrogen sulfide sulfur 15ppm and mercaptan sulfur 57ppm is mixed with 10ppm activator, the activator is tetraethylammonium hydroxide, and the mixture is passed through the solid adsorbent equipped with activated carbon of 10wt% basic copper carbonate In the hydrogen sulfide removal tower, the temperature is 30°C, the pressure is 0.3MPa, and the volume space velocity is 1h -1 , and then through the sand filter tower to remove a small amount of mechanical impurities and waste liquid, after the dehydrogen sulfide tower and sand filter tower, the catalytic cracked gasoline has a hydrogen sulfide content of 0ppm, and then mixes it with 8ppm of co-catalyst and air, and the co-catalyst is hydrogen oxidation Trimethyl dodecyl ammonium, the air addition rate is 25ml / min, and the mixture is passed through the mercaptan oxidation tower of the sweetening catalyst of the active carbon of loading 0.1wt% cobalt phthalocyanine, in the mercaptan oxidation to...

Embodiment 2

[0071] The catalytic cracking gasoline feed containing hydrogen sulfide sulfur 15ppm, mercaptan sulfur 57ppm is mixed with 12ppm of activator, and activator is tetrapropylammonium hydroxide, and the mixture is passed through the solid adsorbent that is equipped with the activated carbon of 13wt% zinc carbonate Dehydrogen sulfide tower, in the dehydrogen sulfide tower, the temperature is 25°C, the pressure is 0.25MPa, and the volume space velocity is 1.5h -1 , and then through the sand filter tower to remove a small amount of mechanical impurities and waste liquid, after the dehydrogen sulfide tower and sand filter tower, the catalytic cracked gasoline has a hydrogen sulfide content of 0ppm, and then mixes it with 15ppm of co-catalyst and air, and the co-catalyst is hydrogen oxidation Trimethyltetradecylammonium, the air addition is 25ml / min, and the mixture is passed through the mercaptan oxidation tower of the sweetening catalyst of the activated carbon of 0.15wt% sulfonated p...

Embodiment 3

[0073] The catalytic cracking gasoline feed containing hydrogen sulfide sulfur 15ppm, mercaptan sulfur 57ppm is mixed with 15ppm of activator, and activator is tetrabutylammonium hydroxide, and mixture is passed through the solid adsorbent of the activated carbon of loading 18wt% sodium carbonate Dehydrogen sulfide tower, in the dehydrogen sulfide tower, the temperature is 35°C, the pressure is 0.33MPa, and the volume space velocity is 1.2h -1 , and then through the sand filter tower to remove a small amount of mechanical impurities and waste liquid, the hydrogen sulfide content of catalytically cracked gasoline after the dehydrogen sulfide tower and sand filter tower is 0ppm, and then mixed with 12ppm co-catalyst and air, the co-catalyst is hydrogen oxidation Trimethyl cetyl ammonium, the air addition is 25ml / min, and the mixture is passed through the mercaptan oxidation tower of the sweetening catalyst of the active carbon of loading 0.25wt% polyphthalocyanine cobalt, and in ...

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Abstract

The invention relates to a method for refining catalyse cracking gasoline. The invention belongs to the petrochemical art. The invention is characterized in that the catalyse cracking gasoline feeding mixes with active agent first, the mixture goes through the hydrogen sulfide filter tower and sand filter tower provided with solid adsorbent to remove hydrogen sulfide. Then mix the gasoline with catalyst promoter and air. The mixture then goes through mercaptan sulfur filter tower and sand filter tower to remove the mercaptan sulfur, and the residual air is removed by gas-liquid separation tank. The goal is achieved of removing hydrogen sulfide and mercaptan sulfur of catalyse cracking gasoline.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry and relates to a refining method for removing hydrogen sulfide and mercaptan sulfur from catalytic cracking (FCC) gasoline. Background technique [0002] In the refinery, the catalytic cracking stabilized gasoline produced by heavy oil through catalytic cracking reaction, fractionation and absorption stabilization device contains a small amount of harmful substances such as hydrogen sulfide and mercaptan, and needs to be desulfurized and refined to meet the quality requirements of qualified gasoline. The usual refining method is: first, pre-alkali washing with 5-15% sodium hydroxide solution to remove a small amount of hydrogen sulfide and some low-molecular mercaptans, and then convert the remaining mercaptans into disulfides by catalytic oxidation , Demercaptan, so as to achieve the purpose of refining, so that the gasoline water-soluble acid-base qualified, copper corrosion quali...

Claims

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Application Information

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IPC IPC(8): C10G53/08
Inventor 柯明刘溆蕃宋昭峥蒋庆哲
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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