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Catalytic no-hydroprocessing adsorbing desulfurization for hydrocarbon oil in moving bed reactor

A moving bed reactor, adsorption desulfurization technology, applied in the refining of hydrocarbon oil, petroleum industry, etc., can solve the problem of insufficient deep desulfurization, and achieve the effect of low olefin content, good desulfurization effect, and cetane number improvement.

Active Publication Date: 2008-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like heavy oil catalytic cracking desulfurization, its desulfurization rate is affected by the sulfur content of raw materials, catalyst properties and conversion depth, etc., which is not enough to achieve deep desulfurization, and the desulfurization rate is generally 50-80%.

Method used

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  • Catalytic no-hydroprocessing adsorbing desulfurization for hydrocarbon oil in moving bed reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The gasoline raw material numbered A is alternately contacted with CAT-5 and ADT-5 (the total weight ratio of the front and back is 0.05:1) in a small continuous moving bed reactor for catalytic conversion and adsorption. The main operating conditions are: the reaction temperature is 400°C, the reactor pressure is 0.2 MPa, and the volumetric space velocity of the gasoline feedstock is 10 hours -1 , with water vapor as the dilution medium, the volumetric space velocity of water vapor is 0.5 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 temperature of CAT-5 and ADT-5 is 550°C and the pressure is 0.2 MPa. The test conditions, product distribution and main properties of gasoline are listed in Table 2.

Embodiment 2

[0055] The gasoline raw material numbered B is alternately contacted with CAT-5 and ADT-5 (the total weight ratio of the front and rear is 1:1) in a small continuous moving bed reactor for catalytic conversion and adsorption. The main operating conditions are: the reaction temperature is 250°C, the reactor pressure is 0.2 MPa, and the volumetric space velocity of the gasoline raw material is 0.5 hours -1 , with water vapor as the dilution medium, the volumetric space velocity of water vapor is 0.05 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 temperature of CAT-5 and ADT-5 is 450°C and the pressure is 0.2 MPa. 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 93.69% by weight.

Embodiment 3

[0057] The gasoline raw material numbered C is alternately contacted with CAT-5 and ADT-5 (the total weight ratio of the front and back is 50:1) in a small continuous moving bed reactor for catalytic conversion and adsorption. The main operating conditions are: the reaction temperature is 450°C, the reactor pressure is 0.4 MPa, and the volume space velocity of the gasoline raw material is 80 hours -1 , with nitrogen as the dilution medium, the volumetric space velocity of nitrogen is 5.0 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 temperature of CAT-5 and ADT-5 is 650°C and the pressure is 0.4 MPa. 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 94.74% by weight.

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Abstract

The non-hydrocatalyzing adsorption process for desulfurizing hydrocarbon oil in a moving bed reactor includes feeding sulfur containing hydrocarbon oil material and fluidizing medium into the moving bed reactor, contacting alternately with filled sulfur converting agent and sulfur adsorbent, separating the reacted matter flow to obtain product, steam stripping the deactivated sulfur converting agent and sulfur adsorbent and burning to regenerate, and returning the regenerated sulfur converting agent and sulfur adsorbent to the moving bed reactor for circular use. 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 non-hydrogenation condition in the desulfurizing rate up to 96 wt%.

Description

technical field [0001] This invention pertains to the refining of petroleum hydrocarbons in the absence of hydrogen, and more particularly to a method for removing sulfides 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 method of hydrodesulfurization. Among them, selectiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/08
Inventor 唐津莲许友好刘宪龙程从礼徐莉汪燮卿
Owner CHINA PETROLEUM & CHEM CORP
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