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A method for producing high-clean gasoline with full fraction high-sulfur inferior gasoline

A technology of inferior gasoline, whole distillate

Inactive Publication Date: 2015-09-30
HIGH TECH RES INST NANJING UNIV LIANYUNGANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Weaknesses: Desulfurized gasoline with high olefins has an octane loss of more than 2 units
Disadvantages: low gasoline yield, high operating costs
[0015] To sum up, in the existing literature or patents, there is still room for improvement in gasoline ultra-deep desulfurization (sulfur content below 10ppmw) technology: 1. The selective hydrodesulfurization process has long routes, high energy consumption, large octane loss, and high operating costs; 2. In the selective hydrodesulfurization process, a large amount of alkali slag is produced in the process of selective hydrodesulfurization; 3. Selective adsorption desulfurization is used The sulfur content of the raw material is not more than 100ppmw, and the adsorption selectivity and adsorption capacity of the adsorbent for sulfide are low; The loss is serious, and the SOx generated by the regeneration flue gas needs to be further processed. When the olefin content is high, the octane number loss is large

Method used

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  • A method for producing high-clean gasoline with full fraction high-sulfur inferior gasoline
  • A method for producing high-clean gasoline with full fraction high-sulfur inferior gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1: Preparation of catalyst carrier: Take 500 grams of aluminum hydroxide powder, 500 grams of pseudoboehmite powder, and dissolve 100 grams of citric acid in 800 mL of aqueous solution containing 3% nitric acid, knead and extrude into a φ1.5mm The cylinder was dried at 80-120°C for 6-12h, calcined at 400-600°C for 6-12h, and cooled to room temperature to obtain catalyst-supported Z1.

Embodiment 2

[0054] Embodiment 2: the preparation method of catalyst 1:

[0055] Impregnate 100 g of alumina carrier Z1 with 96 ml of a solution containing 0.56 g of lithium hydroxide, dry at 80-120 °C and bake at 500 °C, then impregnate with a co-impregnation solution containing 8.25 g of nickel nitrate and 10.23 g of ammonium molybdate milliliters, after drying at 110°C and roasting at 500°C, Catalyst 1 was obtained, and its composition was NiO1.92wt%-MO 3 7.53wt%-Li 2 O0.32wt% / Al 2 o 3 , Al 2 o 3 margin. The preparation method of catalyst 1 used in the rest of the examples is the same, but the components and contents are different.

Embodiment 3

[0056] Embodiment 3: the preparation method of catalyst 2:

[0057] Impregnate 100 grams of alumina carrier Z1 with 100 ml of an aqueous solution prepared by 2.92 grams of magnesium nitrate, 5 grams of phosphoric acid (and / or boric acid) and 10 grams of citric acid. After drying at 110 °C and roasting at 500 °C, impregnate with cobalt nitrate 80 ml of co-impregnation solutions of 12.53 g and 13.72 g of ammonium molybdate were dried at 110 °C and calcined at 500 °C to obtain catalyst 2, whose composition was CoO2.7wt%-MoO 3 9.44wt% -MgO3.88wt% -P 2 o 5 3.05wt% / Al 2 o 3 , al 2 o 3 margin. The preparation method of catalyst 2 of the remaining embodiments is the same, but each component and content are different.

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Abstract

The invention relates to a method for producing high-cleanliness gasoline by full-range high-sulfur inferior gasoline. According to the method, a combined method of orderly carrying out hydrogenation pretreatment, hydrofining-desulfurization, denitrification, deoxidation colloid removal and super-deep adsorption desulfurization isomeric aromatization on raw material gasoline to obtain the ultralow-sulfur high-cleanliness gasoline product. The sulfur and nitrogen in the full-range gasoline with sulfur content of 10-3000 ppmw until the sulfur content is less than 10 ppmw, even less than 5 ppmw, the colloid content is less than 0.5mg / 100mL, the octane value is basically unchanged, even increased slightly, and the liquid yield is greater than 99%. The method has the advantages of mild operation condition, less hydrogen consumption, low operation cost, good catalyst activity selectivity, more than 30% of adsorbent saturated sulfur capacity and favorable industrial application value.

Description

technical field [0001] The invention belongs to the technical field of producing high-clean gasoline by catalytic hydrofining, and in particular relates to a method for producing high-clean gasoline with all fractions of high-sulfur low-quality gasoline. Background technique [0002] With the popularization of automobiles, the control of automobile exhaust emissions has become an issue that countries attach great importance to. The main substances harmful to the environment in automobile exhaust emissions are particulate matter such as SOx, NOx, and PM2.5. For example, a large number of smog weather in recent years, automobile exhaust emission is an important reason. The SOx and NOx produced by the combustion of organic sulfur compounds and nitrogen compounds in gasoline have many hazards to the environment, mainly including: acid rain, irreversible poisoning of the noble metal "three-way catalyst" in the engine exhaust purification system, particulate matter in the atmos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
Inventor 宋金文申卫卫夏志臧涵宋立纲
Owner HIGH TECH RES INST NANJING UNIV LIANYUNGANG