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Hydro-desulfurization and denitrification process of diesel oil

A hydrodesulfurization and process technology, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of limited improvement of cetane number, inability to meet the requirements of cetane number, etc.

Inactive Publication Date: 2017-01-25
锡山区绿春塑料制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrofining can significantly improve the color and stability of the product, but limited by the thermodynamics of the reaction, the increase in cetane number is limited, so hydrofining is far from meeting the requirements of enterprises for product cetane number

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The catalyst was prepared by impregnation method, and the carrier was a mixture of MSU-G, SBA-15 and HMS, and the mixing ratio was 1:1.1:0.5. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and their molar ratio is 1:0.4:0.3:0.8.

[0039] The catalyst is loaded into a fixed bed reactor, the reaction tube of the reactor is made of stainless steel with an inner diameter of 50mm, the catalyst bed is set to 3 layers, the temperature of the catalyst bed is measured by a UGU808 temperature control meter, and the raw material diesel oil is made of The double-plunger micropump manufactured by Beijing Satellite Manufacturing Plant is continuously transported. The hydrogen is supplied by a high-pressure cylinder and the flow rate is controlled by a Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter. The catalyst loading is 2kg. The reacted prod...

Embodiment 2

[0044] The catalyst is prepared by the impregnation method, and the carrier is a mixture of MSU-G / SBA-15 complex, MSU-G / HMS and SBA-15 / HMS complex, wherein the ratio of MSU-G, SBA-15 and HMS is the same as that of the implementation Example 1 is the same. The active component molybdenum nitride MO 2 N, tungsten nitride W 2 N, molybdenum carbide Mo 2 The total content of C and tungsten carbide WC is 10% of the mass of the carrier, and the molar ratio is 1:0.6:0.45):1.2.

[0045] All the other conditions are the same as in Example 1.

[0046] The final product was tested and the total sulfur content was reduced to 4 ppm and the total basic nitrogen content was reduced to 7 ppm.

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Abstract

The invention discloses a hydro-desulfurization and denitrification process of diesel oil. The hydro-desulfurization and denitrification process is characterized in that the process uses a fixed bed reactor filled with a hydro-desulfurization and denitrification catalyst, the hydro-desulfurization and denitrification catalyst comprises a carrier and an active component, the carrier is the compound or mixture of MSU-G, SBA-15 and HMS, and the active component is the mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the reaction condition of the fixed bed reactor includes: reaction temperature is 320-360 DEG C, reaction pressure is 6-8MPa, hydrogen to oil volume ratio is 300-600, and volume space velocity is 1.0-2.5h<-1>. By the hydro-desulfurization and denitrification process, the total sulfur content of the diesel oil can be controlled to be lower than 5ppm, and the total nitrogen content of the diesel oil can be controlled within 10ppm at the same time.

Description

technical field [0001] The invention relates to a diesel hydrodesulfurization and denitrification process, in particular to a hydrodesulfurization and denitrification process using a specific catalyst. Background technique [0002] In the 21st century, the demand and use of fuel oil have increased significantly, and the environmental pollution caused by sulfur compounds in it has attracted people's attention. Sulfur oxides (SO x ) into the air, producing acid rain and sulfuric acid smog pollution, etc., resulting in air pollution. [0003] Sulfur is a harmful substance that exists in gasoline in nature. Beijing has taken the lead in implementing the Beijing IV clean diesel standard (sulfur content ≤ 50mg / g), which is equivalent to the Euro IV standard, on January 1, 2008. On May 5, 2016 On the 1st, seven departments including the National Development and Reform Commission, the Ministry of Finance, and the Ministry of Environmental Protection issued a notice on printing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08C10G67/14B01J29/04
CPCC10G45/08B01J29/045B01J2229/18C10G67/14C10G2300/202C10G2300/305C10G2300/70C10G2400/04
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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