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Method for decreasing sulfur content of hydrocarbon

A technology of sulfur content and hydrocarbon oil, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrogenation process, etc., can solve the problems of long time and achieve the effect of increasing octane number and less construction investment

Inactive Publication Date: 2005-02-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method takes a long time and needs to be regenerated with hydrogen

Method used

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  • Method for decreasing sulfur content of hydrocarbon
  • Method for decreasing sulfur content of hydrocarbon

Examples

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Effect test

preparation example Construction

[0021] The preparation method of the desulfurizing agent provided by the present invention is as follows: mix the precursor of the inorganic oxide with the clay in a predetermined amount and prepare it into a slurry with a solid content of 10-50% by weight with decationized water, and adjust its pH with an inorganic acid Adjust and maintain to 2-4, stand and age at 20-80°C for 0-2 hours, add a predetermined amount of zeolite, homogenize, spray molding, wash to remove free Na + ,dry.

[0022] Wherein the precursor of the inorganic oxide is selected from: alumina sol, pseudo-boehmite, silica sol and mixtures thereof, and silica-alumina sol or gel, preferably a mixture of aged pseudo-boehmite and alumina sol, The weight ratio (calculated as alumina) of the aged pseudo-boehmite to the alumina sol binder is 0.1-10, preferably 0.5-7.0.

[0023] The aged pseudo-boehmite slurry can be prepared by a conventional method, such as beating pseudo-boehmite and water, stirring evenly, adjus...

Embodiment 1

[0034] This example illustrates: using the method provided by the present invention, high-sulfur gasoline is reacted and adsorbed in contact with a desulfurizer in a small fluidized bed reactor.

[0035] Two types of high-sulfur gasoline A and B listed in Table 1 are used as raw materials, and the above-mentioned gasoline raw materials are contacted with desulfurizer DS2 in a small fluidized bed reactor operated by continuous reaction regeneration for reaction and adsorption. The test conditions are that the reaction temperature is 350°C, the pressure at the top of the reactor is 0.2 MPa, and the weight hourly space velocity is 4 hours. -1 , the agent-oil ratio is 10, and the water-oil ratio is 0.03. The reaction product, steam and raw desulfurizing agent are separated in the settler, and the reaction product is separated to obtain gas products and liquid products, while the raw desulfurizing agent enters the stripper, and the hydrocarbon products adsorbed on the raw desulfuri...

Embodiment 2

[0039] This example illustrates: adopting the method provided by the present invention and adopting different operating conditions, gasoline raw materials are reacted and adsorbed in contact with a desulfurizer in a small fluidized bed reactor.

[0040] The gasoline B listed in Table 1 is used as the raw material, and it is contacted with the desulfurizer DS2 in a small fluidized bed reactor for continuous reaction regeneration for reaction and adsorption. The test conditions are: the reaction temperature is 250-450°C, the pressure at the top of the reactor is 0.2-0.6 MPa, and the weight hourly space velocity is 2-15 hours -1 , The agent-oil ratio is 6-30, and the water-oil ratio is 0.03-0.05. Concrete test procedure is identical with embodiment 1. The test conditions, test results and sulfur content in gasoline are listed in Table 4.

[0041] It can be seen from Table 4 that the desulfurizer has different catalysis and adsorption degrees on gasoline raw materials under diff...

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Abstract

A method to reduce sulfur in hydrocarbon oil is that put the petroleum hydrocarbon and desulfuration agent into the fluid bed reactor and react with the fluid medium under following conditions: reaction temperature is 150-500 deg.C heavy hourly space velocity is 0.1-60 per hour, the weight proportion of the desulfuration agent and cut fraction of gasoline is 3-40, and the reactive pressure is 130-1450Kpa. Then separate the production and desulfuration agent and transfer the production into downstream separation system. Moreover, transfer the desulfuration agent with carbon into regeneration equipment to regenerate after striping and the regeneration temperature should be lower than 700 deg.C. Additionally, the desulfuration agent can be reused after being cooled down.

Description

technical field [0001] This invention pertains to the refining of hydrocarbon oils in the absence of hydrogen, and more particularly to a method for reducing the sulfur content of hydrocarbon oils. Background technique [0002] With the increase of the processing capacity of high-sulfur crude oil, the sulfur content in oil products also increases accordingly, and the environmental pollution is aggravated, which has aroused widespread concern in various countries. Developed countries limit the sulfur content of gasoline to less than 50ppm in developed countries. my country currently requires less than 800ppm in gasoline products. However, with increasingly stringent environmental protection, the requirements for gasoline sulfur content specification control are also getting higher and higher. The more effective way to reduce the sulfur content of gasoline is to use hydrofining and hydroreforming, through which catalytic reforming of gasoline can be achieved under hydrogen pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/06
Inventor 许友好张久顺刘宪龙龙军何鸣元
Owner CHINA PETROLEUM & CHEM CORP
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