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Ultra-deep absorption desulfurizer for light oil and application thereof

A deep adsorption and light oil technology, which is applied in the direction of refined hydrocarbon oil, petroleum industry, and other chemical processes, can solve the problems of small specific surface area, low desulfurization activity and selectivity, achieve strong adsorption and increase micropores and mesopores, the effect of strengthening the adsorption effect

Inactive Publication Date: 2011-01-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the purposes of the present invention is to provide an ultra-deep adsorption desulfurizer for light oil products, which solves the problems of the existing clay-based desulfurizers for light oil products prepared by mechanical mixing method with small specific surface area, low desulfurization activity and selectivity, etc. Another object of the present invention is to provide the application of the above-mentioned desulfurizer for ultra-deep desulfurization in light oil products, which has the characteristics of low raw material price, simple preparation method, large sulfur capacity and good regeneration effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Mix zinc oxide, iron oxide, titanium oxide, ammonium carbonate and attapulgite at a mass ratio of 1:1:0.1:0.1:0.5, add appropriate amount of water, extrude, dry at 150°C for 2 hours, and then roast at 350°C for 2 hours , to obtain a molded desulfurizer. The specific surface area is 140.42m 2 / g.

[0031] According to the mass ratio of adsorbent to raw oil of 0.02, add 0.3 g of adsorbent to 15.00 g (20 mL) of heavy naphtha with a sulfur content of 5 mg / L, and perform static adsorption at normal pressure and temperature of 45 ° C for 6 hours. The sulfur content is 0.55mg / L, the desulfurization rate reaches 89%, and the adsorption capacity of the adsorbent is 0.297mg / g.

Embodiment 2

[0036] Mix zinc oxide, iron oxide, titanium oxide, cerium oxide, ammonium bicarbonate and attapulgite in a mass ratio of 1:1:0.075:0.075:0.15:0.7, add appropriate amount of water, extrude, dry at 60°C for 24 hours, and then Roast at 350°C for 5 hours to obtain a molded desulfurizer.

[0037] According to the mass ratio of adsorbent to raw oil of 0.02, 0.3 g of adsorbent was added to 15.00 g (20 mL) of naphtha with a sulfur content of 5 mg / L, and static adsorption was carried out at normal pressure and temperature of 45 ° C for 6 hours. The sulfur content is 0.68mg / L, the desulfurization rate reaches 86.4%, and the adsorption capacity of the adsorbent is 0.288mg / g.

Embodiment 3

[0042] Mix zinc oxide, nickel oxide, titanium oxide, sodium bicarbonate and montmorillonite in a mass ratio of 1:0.28:0.02:0.02:0.18, add appropriate amount of water, extrude, dry at 100°C for 2 hours, and then roast at 200°C After 10 hours, a molded desulfurizer was prepared.

[0043] According to the mass ratio of adsorbent to raw oil of 0.02, 0.3 g of adsorbent was added to 15.00 g (20 mL) of naphtha with a sulfur content of 5 mg / L, and static adsorption was carried out at normal pressure and temperature of 45 ° C for 6 hours. The sulfur content is 1.31mg / L, the desulfurization rate reaches 73.8%, and the adsorption capacity of the adsorbent is 0.246mg / g.

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Abstract

The invention relates to an ultra-deep absorption desulfurizer for light oil and an application thereof. The desulfurizer comprises 10.0-80.0% of zinc oxide, 5.0-75.0% of VIII metal oxide, 1.0-50.0% of adsorption assistant, 1.0-10.0% of pore-expanding agent and 10.0-35.0% of adhesive. The method for making the desulfurizer comprises the following steps: uniformly mixing, pressing to obtain sheets or squeezing to obtain strips, drying and roasting. The absorption desulfurizer does not use noble metals, thereby having the advantage of low price; the invention adopts mixed roasting technique, thereby having the advantages of simple preparation method and easy operation; the desulfurizer has the advantages of high desulfurization activity and favorable regeneration effect, and can be used for processing low-sulfur light oil; the content of sulfides in the processed light oil can be reduced to below 0.5 ppm; and the desulfurizer is suitable to be used in the low-temperature fine desulfurization process of naphtha, gasoline, diesel, aviation kerosene and the like.

Description

Technical field: [0001] The invention relates to an ultra-deep adsorption desulfurizer for light oil products and its application. The invention belongs to the field of oil refining technology and desulfurizer preparation in the petroleum processing process. Background technique: [0002] With the continuous enhancement of people's awareness of environmental protection, various environmental pollution has become the focus of people's attention. Over the past ten years, developed countries such as Europe and the United States have promulgated a series of new standards for the cleanliness of petroleum products, and fuel oil without sulfur has become a trend. At present, my country's fuel oil products have a large gap with foreign developed countries in terms of specifications and standards or actual quality. While the sulfur content required by environmental regulations is getting lower and lower, the demand for light oil products is increasing all over the world, so it is v...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C10G25/00
Inventor 崔群樊继利王海燕朱玉旭陈霞章海春
Owner CHINA PETROLEUM & CHEM CORP
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