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Method for preparing sulfuration-type gasoline selective hydro-desulfurization catalyst

A hydrodesulfurization and catalyst technology, which is applied in the field of preparation of sulfurized hydrogenation catalysts, to achieve the effects of reducing production costs, simplifying presulfurization steps, and saving heat energy consumption

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrodesulfurization and hydrodenitrogenation catalytic activity of the catalyst sulfurized by this method is not significantly different from that of the traditional sulfuration method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Referring to the method for preparing a gasoline selective hydrodesulfurization catalyst in Example 1 of CN02133136.7, cobalt carbonate solution and ammonium molybdate solution were prepared respectively. After first introducing Co into the catalyst carrier, it is calcined according to the conditions described therein, then impregnated with ammonium molybdate solution, dried and not calcined to obtain the catalyst. Fill the above catalyst in the middle of the stainless steel reaction tube, and pass the vulcanizing agent H at room temperature 2 S and H 2 mixed gas, where H 2 Hydrogen atom and H 2 The molar ratio of sulfur atoms in S is 5:1, and the molar ratio of the amount of sulfurizing agent to the active metal in the catalyst is 5:1. Then put the reaction tube directly in the reaction furnace that has been heated to 400°C (that is, the vulcanization temperature is about 400°C). After testing, the catalyst rises from normal temperature (about 25°C) to about 400°C i...

Embodiment 2

[0038] By the method of embodiment 1. h 2 Hydrogen atom and H 2 The molar ratio of sulfur atoms in S is 30:1, and the molar ratio of the amount of sulfurizing agent to the active metal in the catalyst is 10:1. The vulcanization temperature is about 300°C, the heating rate is about 85°C / min, and the pre-vulcanization is rapid for 25 minutes under these conditions. After pre-sulfurization, the reaction tube was taken out of the high-temperature reaction furnace, and the temperature was rapidly cooled to 45°C by passing nitrogen gas at room temperature, and the cooling rate was about 80°C / min.

[0039] Before the reaction, quantitatively fill in atmospheric pressure hydrogen at 350°C, the molar ratio of the amount of hydrogen to the active metal in the catalyst is about 1.5:1, carry out the reduction of the surface sulfur polymer, the reduction time is 30 minutes, and finally adjust the conditions for gasoline Selective hydrodesulfurization of feedstocks. The catalyst presulf...

Embodiment 3

[0041] By the method of embodiment 1. The vulcanization temperature is about 500°C, the heating rate is about 85°C / min, and the vulcanization time is 5 minutes. The catalyst presulfided by this method is represented by C3.

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PUM

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Abstract

The invention provides a method for preparing sulfuration-type gasoline selective hydro-desulfurization catalyst. A main content of the method is characterized in that hydrogenation active metal elements of the gasoline selective hydro-desulfurization catalyst are combination of Co and Mo, the hydrogenation active metal element Co is introduced and is calcinated, the hydrogenation active metal element Mo is introduced by employing an impregnation method and then is dried, the dried catalyst is directly and rapidly procured in short time without calcination, preferably, surface sulfur polymer reduction operation can be carried out. The catalyst has obvious usage performance by the method, and the method has the advantages of simple precuring step, short on-stream time of the catalyst, low heat energy consumption, less amount of a toxic vulcanizing agent which has easy corrosion performance, and low production cost.

Description

technical field [0001] The invention relates to a preparation method of a sulfurized hydrogenation catalyst, in particular to a preparation method of a sulfurized gasoline selective hydrodesulfurization catalyst. Background technique [0002] The air pollution caused by automobile exhaust has attracted more and more attention. Reducing the content of sulfur and olefins in gasoline can greatly reduce volatile organic compounds (VOCs), nitrogen oxides (NO X ), emissions of harmful substances such as sulfur dioxide. Therefore, countries around the world have formulated their own new standards for clean gasoline marked by low sulfur and low olefination. [0003] The sulfur content in catalytic cracking (FCC) gasoline is generally 200-1200 μg / g, and the research octane number (abbreviated as RON) is generally 90-94. FCC gasoline is the main gasoline component in some refineries, and the blending ratio can sometimes reach 80wt% to 90wt%. Therefore, reducing the sulfur content ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882C10G45/08
Inventor 高玉兰方向晨徐黎明蒋立敬吕振辉张学辉佟佳
Owner CHINA PETROLEUM & CHEM CORP
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