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Adsorption desulfurization additive, as well as preparation method and desulfurization system thereof

A technology for adsorption desulfurization and adsorbent, which is applied in chemical instruments and methods, refined hydrocarbon oil, other chemical processes, etc. It can solve the problem that the desulfurization adsorbent bed cannot reach the material level, increase the wear and deactivation of the desulfurization adsorbent process, desulfurization adsorbent activity and stability decline, to achieve the effect of reducing adverse effects, improving stability, and reducing regeneration frequency

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the process of practical application, it is not only the sulfur load on the desulfurization adsorbent that affects the activity of the desulfurization adsorbent, but also the colloid or coke precursor in raw gasoline will also have a great impact on the activity of the desulfurization adsorbent, making Decreased activity and stability of desulfurization adsorbent
In order to ensure that the activity of the desulfurization adsorbent is high enough, it is necessary to strengthen the regeneration intensity of the desulfurization adsorbent and increase the regeneration frequency. This measure further increases the wear and deactivation process of the desulfurization adsorbent.
At the same time, it is also found in practical industrial applications that due to various reasons, such as the decrease in the processing capacity of the device due to the decrease in the efficiency of the heat exchanger, or the decrease in the processing capacity of the device due to insufficient raw material sources, or the indicators such as the sulfur content of the raw material processed by the device are far from Lower than the design value, etc. lead to a significant reduction in the desulfurization adsorbent storage in the reactor of the device, resulting in the desulfurization adsorbent bed layer not reaching the material level required for normal circulation, making the reaction-regeneration cycle difficult

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  • Adsorption desulfurization additive, as well as preparation method and desulfurization system thereof
  • Adsorption desulfurization additive, as well as preparation method and desulfurization system thereof
  • Adsorption desulfurization additive, as well as preparation method and desulfurization system thereof

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preparation example Construction

[0026] The preparation method of adsorption desulfurization aid provided by the invention comprises the following steps:

[0027] (1) Forming, drying and roasting the slurry of alumina, silicon oxide and water to obtain the carrier of the adsorption desulfurization aid;

[0028] (2) loading metal oxide components on the adsorption desulfurization aid carrier, the metal oxide components are selected from sodium oxide, potassium oxide, magnesium oxide, calcium oxide, titanium oxide, vanadium oxide, chromium oxide, One or more of manganese oxide, iron oxide, copper oxide, zinc oxide, zirconium oxide, lanthanum oxide, cerium oxide, praseodymium oxide and neodymium oxide.

[0029] In the present invention, the amount of the adsorption desulfurization aid carrier and the metal oxide component is not particularly limited, and can be a conventional choice in the art, for example, based on the total weight of the adsorption desulfurization aid, the adsorption desulfurization aid The a...

preparation example 1

[0060] This preparation example is used to illustrate the adsorption desulfurization aid provided by the present invention and its preparation method.

[0061] Alumina (chemically pure, produced by Shandong Zibo Aluminum Factory, the same below) and silicon oxide (chemically pure, purchased from Shanghai Merrill Chemical Technology Co., Ltd., the same below) were mixed according to the mass ratio of 1:2, and then deionized Water is mixed and beaten to obtain a slurry with a solid content of 15% by weight, and the pH value of the slurry is adjusted with a solution of nitric acid (chemically pure, produced by Huantai County Shunxin Chemical Co., Ltd., the same below) with a volume concentration of 30% under stirring. To 5, continue to stir until a uniform sol is formed, and the sol is spray-dried and molded at a controlled tail gas temperature of 250°C and a spray pressure of 50 atmospheres to obtain microspherical solid particles. The prepared microspherical solid particles wer...

preparation example 2

[0063] This preparation example is used to illustrate the adsorption desulfurization aid provided by the present invention and its preparation method.

[0064] Aluminum oxide and silicon oxide are mixed according to the ratio of mass ratio 5:1, and then mixed with deionized water for beating to obtain a slurry with a solid content of 10% by weight, and the pH of the slurry is adjusted with a nitric acid solution with a volume concentration of 30%. Adjust the value to 2, and continue to stir until a uniform sol is formed. The sol is spray-dried and molded at a controlled tail gas temperature of 300°C and a spray pressure of 60 atmospheres to obtain microspherical solid particles. The prepared microspherical solid particles were dried at 120° C. for 2 hours, and then calcined at 700° C. for 0.5 hour to obtain adsorption desulfurization aid carrier particles with an average particle diameter of 100 μm. The pre-configured chromium nitrate aqueous solution with a mass concentration...

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Abstract

The invention provides an adsorption desulfurization additive, a preparation method of the adsorption desulfurization additive, the adsorption desulfurization additive prepared by the method and a desulfurization system. The adsorption desulfurization additive comprises a an adsorption desulfurization additive carrier and a metal oxide ingredient loaded on the adsorption desulfurization additive carrier, wherein the adsorption desulfurization additive carrier is a mixture of aluminum oxide and silicon oxide; and the metal oxide ingredient is one or more of sodium oxide, potassium oxide, magnesium oxide, calcium oxide, titanium oxide, vanadium oxide, chromium oxide, manganese oxide, ferric oxide, copper oxide, zinc oxide, zirconium oxide, lanthanum oxide, cerium oxide, praseodymium oxide and neodymium oxide. The desulfurization system provided by the invention has an excellent desulfurization effect.

Description

technical field [0001] The invention relates to an adsorption desulfurization auxiliary agent, a preparation method of the adsorption desulfurization auxiliary agent, an adsorption desulfurization auxiliary agent prepared by the method and a desulfurization system. Background technique [0002] As people pay more and more attention to environmental protection, the restrictions on the sulfur content in light hydrocarbons used as fuels are becoming more and more stringent. Taking gasoline as an example, the European Union has stipulated that the sulfur content should not exceed 50 μg / g in 2005, and the Euro V gasoline standard planned to be implemented in 2010 stipulates that the sulfur content should be less than 10 μg / g. China's National III standard, which was implemented on December 31, 2009, stipulates that the sulfur content of gasoline should not exceed 150 μg / g, and plans to promote the implementation of the National IV standard with a gasoline sulfur content of no gre...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30C10G25/00
CPCB01J20/08B01J20/041B01J20/06B01J20/10B01J2220/4806C10G25/00C10G2300/202
Inventor 毛安国王文寿刘宪龙徐莉刘玉良
Owner CHINA PETROLEUM & CHEM CORP
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