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Catalytic hydroprocessing adsorbing desulfurization for hydrocarbon oil in fixed bed reactor

A fixed bed reactor, adsorption desulfurization technology, applied in the treatment of hydrocarbon oil, refined hydrocarbon oil, petroleum industry, etc., can solve the problem of limited gasoline desulfurization rate, achieve low olefin content, high octane number, cetane number Improved effect

Active Publication Date: 2008-03-05
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, the desulfurization rate of gasoline by this method is limited

Method used

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  • Catalytic hydroprocessing adsorbing desulfurization for hydrocarbon oil in fixed bed reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0055] The gasoline raw material numbered A is alternately contacted with CAT-3 and ADT-3 (the total weight ratio of the front and back is 0.05:1) in a small fixed-bed reactor for catalytic conversion and adsorption. The main operating conditions are: the reaction temperature is 400°C, the reactor pressure is 1.0 MPa, and the volumetric space velocity of the gasoline feedstock is 10 hours -1 , with hydrogen as the hydrogen donor, the volumetric space velocity of hydrogen is 100 hours -1 . The desulfurized product obtained from the top of the reactor is cooled and separated to obtain gaseous products and liquid products. The regeneration conditions of CAT-3 and ADT-3 are as follows: the temperature is 550°C, the reactor pressure is 0.2 MPa, and the time is 5 minutes. The test conditions, product distribution and main properties of gasoline are listed in Table 2.

Embodiment 2

[0063] The gasoline raw material numbered B is alternately contacted with CAT-3 and ADT-3 (the total weight ratio of the front and back is 1:1) in a small fixed-bed reactor for catalytic conversion and adsorption. The main operating conditions are: the reaction temperature is 250°C, the reactor pressure is 0.5 MPa, and the volumetric space velocity of the gasoline raw material is 0.50 hours -1 , with the dry gas produced by this method (hydrogen 35% vol) as the hydrogen donor, the volume space velocity of the dry gas is 5 hours -1 . The desulfurized product obtained from the top of the reactor is cooled and separated to obtain gaseous products and liquid products. The regeneration conditions of CAT-3 and ADT-3 are as follows: the temperature is 450°C, the reactor pressure is 0.2 MPa, and the time is 10 minutes. The test conditions, product distribution and main properties of gasoline are listed in Table 3. It can be seen from Table 3 that the desulfurization rate of gasolin...

Embodiment 3

[0065] The gasoline raw material numbered c is alternately contacted with CAT-3 and ADT-3 (the total weight ratio of the front and rear is 50:1) in a small continuous fixed-bed reactor for catalytic conversion and adsorption. The main operating conditions are: the reaction temperature is 45°C, the reactor pressure is 0.8 MPa, and the volume space velocity of the gasoline raw material is 80 hours -1 , with FCC dry gas (hydrogen 30% vol) as the hydrogen donor, the volume space velocity of the dry gas is 20 hours -1 . The desulfurized product obtained from the top of the reactor is cooled and separated to obtain gaseous products and liquid products. The regeneration conditions of CAT-3 and ADT-3 are as follows: the temperature is 650°C, the reactor pressure is 0.4 MPa, and the time is 10 minutes. The test conditions, product distribution and main properties of gasoline are listed in Table 3. It can be seen from Table 3 that the desulfurization rate of gasoline is as high as 96...

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Abstract

The hydrocatalyzing adsorption process for desulfurizing hydrocarbon oil in a fixed bed reactor includes feeding sulfur containing hydrocarbon oil material and hydrogen donor into the fixed bed reactor, contacting alternately with sulfur converting agent and sulfur adsorbent, and separating the reacted matter flow to obtain product. The process completes the catalytic conversion of organic sulfide into inorganic sulfide and the timely adsorption of inorganic sulfide cooperatively inside one reactor, and can realize deep desulfurization of gasoline in hydrogenation condition in the desulfurizing rate up to 98 wt%.

Description

technical field [0001] This invention pertains to the refining of petroleum hydrocarbons in the presence of hydrogen or hydrogen-generating compounds, and more particularly to a process for the removal of sulfur compounds from hydrocarbon oils. Background technique [0002] As people pay more and more attention to environmental protection, the restrictions on sulfur content in hydrocarbon oil are becoming more and more stringent. Taking gasoline as an example, the U.S. Environmental Protection Agency (EPA) stipulates that the sulfur limit is 30 μg / g (Tier II); Europe requires gasoline sulfur content to be lower than 50 μg / g (Euro IV emission standard); my country also requires the implementation of Euro IV in 2008 For emission standards, the sulfur content of gasoline is required to be less than 50 μg / g. Therefore, the hydrocarbon oil must be deeply desulfurized to meet the requirements. [0003] At present, the deep desulfurization of hydrocarbon oil mainly adopts the meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04C10G45/12
Inventor 许友好唐津莲龚剑洪龙军达志坚张久顺谢朝钢
Owner CHINA PETROLEUM & CHEM CORP
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