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FCC gasoline hydrodesulfurization technology

A technology for hydrodesulfurization and desulfurization process, which is applied in the petroleum industry, processing hydrocarbon oil, and hydrocarbon oil processing products, etc., and can solve the problems of high operating cost, lower gasoline octane number, and easy saturation of olefins.

Inactive Publication Date: 2016-12-21
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

However, the hydroprocessing method has the following disadvantages: (1) equipment investment is large; (2) the reaction conditions of hydrodesulfurization are harsh, and the operating cost is high; (3) olefins are prone to saturation under hydrodesulfurization conditions, which not only consumes a Hydrogen, and lower gasoline octane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The catalyst is prepared by the impregnation method, and the carrier is doped with Co 2+ KIT-1, Co 2+ The doping amount in KIT-1 is controlled at 0.65% of the carrier mass. 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 carrier mass, and the molar ratio is 1:0.4:0.3:0.8.

[0044] The catalyst was filled into a fixed-bed reactor. The reaction tube of the reactor was made of stainless steel with an inner diameter of 50mm. The temperature of the catalyst bed was measured with a UGU808 temperature control meter. The raw material light oil was manufactured by Beijing Satellite Manufacturing Factory. The double plunger micro-pump continuously delivers hydrogen. The hydrogen is supplied from a high-pressure cylinder and the flow rate is controlled by the Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter. The catalyst loading is 2kg. The product after the reaction is...

Embodiment 2

[0049] The catalyst is prepared by the impregnation method, and the carrier is doped with Co 2+ KIT-1, Co 2+ The amount of doping in KIT-1 is controlled at 0.7% of the carrier mass. 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 carrier mass, and the molar ratio is 1:0.6:0.45):1.2.

[0050] The remaining conditions are the same as in Example 1.

[0051] Test the final product, its research octane number still reached 94.1, and the total sulfur content was reduced to 4ppm.

Embodiment 3

[0076] The catalyst contains catalytic promoter TiO 2 , CeO 2 , V 2 O 5 And NbOPO 4 , The contents are 1%, 1.5%, 1% and 3% respectively, and the rest are the same as in Example 1.

[0077] After testing the final product, the catalyst bed pressure drop did not change after 3 months of use, which was 16% less than the catalyst bed pressure drop of Example 1 for the same use time.

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PUM

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Abstract

The invention discloses a FCC gasoline hydrodesulfurization technology. The technology employs a fixed bed reactor, the fixed bed reactor is filled with a hydrodesulfurization catalyst, the catalyst comprises a carrier and an active component; the carrier is hetero atom Co<2+>-doped KIT-1 in a synthesis frame structure; the active component is a mixture of nitrided dimolybdate MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the catalyst contains a catalysis auxiliary agent, the catalysis auxiliary agent is a mixture of TiO2, CeO2, V2O5 and NbOPO4; the reaction condition of the fixed bed reactor is characterized in that the reaction temperature is 300-420 DEG C, the hydrogen partial pressure is 2.5-3.5 MPa, the volume ratio of hydrogen to oil is 500-800, and the volume space velocity is 1.5-4h < -1>. The technology can reduce the total sulfur content in FCC gasoline to less than 10 ppm which can reach the national V standard. According to the technology, the octane number of the FCC gasoline is not obviously reduced.

Description

Technical field [0001] The invention relates to a gasoline hydrodesulfurization process, in particular to an FCC gasoline hydrodesulfurization process, and more preferably to a process for FCC gasoline hydrodesulfurization and reducing the octane number reduction range. Background technique [0002] In the 21st century, the demand and use of fuel oil have increased significantly, and the environmental pollution caused by sulfur-containing compounds has attracted more attention. The sulfur oxides (SO x ) Discharge into the air, causing acid rain and sulfuric acid smog type pollution, causing air pollution. [0003] Sulfur is a harmful substance in gasoline in nature. More than 80% of the sulfur in finished gasoline comes from catalytic cracking (FCC) gasoline. As crude oil continues to get heavier, the sulfur content in FCC gasoline will continue to increase. Foreign gasoline generally comes from FCC (34%), catalytic reforming (33%), and processes such as alkylation, isomerization ...

Claims

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Application Information

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IPC IPC(8): C10G45/04B01J29/03
CPCC10G45/04B01J29/0341B01J27/24B01J27/195B01J27/22B01J29/0333B01J21/063B01J23/10B01J23/22B01J2229/183C10G2400/02C10G2300/70C10G2300/1037C10G2300/202B01J35/19
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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