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A kind of production method of desulfurized gasoline

A production method and gasoline technology, applied in chemical instruments and methods, processing hydrocarbon oil, petroleum industry, etc., can solve the problems of octane number loss, limited desulfurization depth, etc. The effect of sub-content

Inactive Publication Date: 2016-08-17
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a production method of desulfurized gasoline, which is used to solve technical defects such as limited desulfurization depth and large octane number loss of the gasoline desulfurization method in the prior art

Method used

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  • A kind of production method of desulfurized gasoline
  • A kind of production method of desulfurized gasoline
  • A kind of production method of desulfurized gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1. Preparation of desulfurization adsorbent

[0063] 1) Preparation of alkali-treated molecular sieve and activated carbon

[0064] After heating two 500 mL NaOH solution water baths with a concentration of 0.3 mol / L to about 70 °C, 25 g of ZSM-5 molecular sieve and 25 g of activated carbon were added to them, and after stirring for about 200 minutes, the mixture was immediately cooled in an ice bath. To room temperature, filter and filter and wash the filter cake with deionized water for several times until the pH value of the filtrate is about 7, then the obtained filter cake is placed in an oven at 110 ° C and dried for 4 hours to obtain alkali-treated ZSM- Type 5 molecular sieve and activated carbon treated with alkali; among them, the adsorption and desorption isotherms and pore size distribution curves of ZSM-5 type molecular sieve before and after alkali treatment are shown in figure 1 and figure 2 .

[0065] In addition, the specific surface area and pore si...

Embodiment 2

[0092] 1. Preparation of desulfurization adsorbent

[0093] 1) Preparation of alkali-treated molecular sieve and activated carbon

[0094] After raising the temperature of two 500mL NaOH solutions with a concentration of 0.2mol / L in a water bath to about 80°C, add 25g of Y-type molecular sieve and 25g of activated carbon to them respectively, stir for about 120 minutes, and immediately cool the mixture to room temperature in an ice bath , filter and wash the filter cake with deionized water for several times until the pH value of the filtrate is about 7, then place the obtained filter cake in an oven at 120°C for 3 hours to obtain alkali-treated Y-type molecular sieve and The specific surface area and pore size distribution of alkali-treated activated carbon; Y-type molecular sieve and activated carbon are shown in Table 3.

[0095] Table 3 Specific surface area and pore size of Y-type molecular sieve and activated carbon

[0096]

[0097] 2) Preparation of composite carr...

Embodiment 3

[0117] 1. Preparation of desulfurization adsorbent

[0118] 1) Preparation of alkali-treated molecular sieve and activated carbon

[0119]After two 500mL NaOH solution water baths with a concentration of 0.2mol / L were heated to about 70°C, 25g of ZSM-5 molecular sieves and 25g of activated carbon were respectively added to them, and after stirring for about 90 minutes, the mixture was immediately cooled in an ice bath. To room temperature, filter and filter and wash the filter cake with deionized water for several times, until the pH value of the filtrate is about 7, the obtained filter cake is placed in an oven at 120 ° C for drying for 3 hours;

[0120] The obtained ZSM-5 molecular sieve and the activated carbon are respectively repeated the above steps once (that is, the alkali treatment is twice) to obtain the alkali treated ZSM-5 molecular sieve and the alkali treated activated carbon; ZSM-5 molecular sieve and activated carbon are obtained. The specific surface area and...

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Abstract

The invention provides a method for producing desulfurized gasoline. The method for producing the desulfurized gasoline comprises the following steps: cutting gasoline feedstock into a light gasoline fraction, a medium gasoline fraction and a heavy gasoline fraction; sweetening the light gasoline fraction to obtain the sweetened light gasoline fraction; desulfurizing the medium gasoline fraction by adsorption to obtain the desulfurized medium gasoline fraction; performing selective hydrodesulfurization of the heavy gasoline fraction to obtain the desulfurized heavy gasoline fraction; mixing the sweetened light gasoline fraction, the desulfurized medium gasoline fraction and the desulfurized heavy gasoline fraction to obtain the desulfurized gasoline, wherein the cutting temperature of the light and medium gasoline fractions is 35-60 DEG C, and the cutting temperature of the medium and heavy gasoline fractions is 70-130 DEG C. The method for producing the desulfurized gasoline disclosed by the invention not only can achieve the deep desulfurization of gasoline, but also has small octane loss.

Description

technical field [0001] The invention relates to a method for producing desulfurized gasoline, belonging to the technical field of petrochemical industry. Background technique [0002] With the increasingly stringent environmental regulations around the world, people have higher and higher requirements for the quality of gasoline products. For example, since January 1, 2014, my country has implemented the National IV emission standard for oil products nationwide, which requires the sulfur content of gasoline to be reduced to below 50ppm; at the same time, my country has also issued the National V quality standard, which requires the The sulfur content is reduced to below 10ppm, while the olefin content is controlled below 24%. [0003] Compared with developed countries, the sulfur content in gasoline in my country is relatively high. The main reason is that about 70-80% of gasoline in my country comes from the catalytic cracking (FCC) process. Because about 90% of the olefin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00B01J20/20B01J20/32
Inventor 高金森赵亮郝天臻徐春明韩晓娜
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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