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Hydrodesulfurization process for FCC gasoline

A technology of hydrodesulfurization and desulfurization process, which is applied in the fields of hydroprocessing process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve the problems of large equipment investment, lower octane number of gasoline, and large hydrogen consumption.

Inactive Publication Date: 2016-12-14
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

[0042] The catalyst was prepared by impregnation method, and the carrier was doped Co 2+ SAPO-5, Co 2+ The doping amount in SAPO-5 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 mass of the carrier, and their molar ratio is 1:0.4:0.3:0.8.

[0043] 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 50 mm, the catalyst bed temperature is measured with a UGU808 temperature control meter, and the raw material light oil is manufactured by Beijing Satellite Manufacturing Plant The double-plunger micropump continuously transports the hydrogen gas from a high-pressure cylinder and controls the flow rate with a Beijing Qixing Huachuang D07-11A / ZM gas mass flow meter. The catalyst loading is 2kg. The reacted product is cooled in a water bath for ga...

Embodiment 2

[0048] The catalyst was prepared by impregnation method, and the carrier was doped Co 2+ SAPO-5, Co 2+ The doping amount in SAPO-5 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 mass of the carrier, and the molar ratio is 1:0.6:0.45):1.2.

[0049] All the other conditions are the same as in Example 1.

[0050] The final product was tested and its research octane number was still 94.0, while the total sulfur content was reduced to 2 ppm.

Embodiment 3

[0075] The catalyst contains catalyst promoter TiO 2 , CeO 2 , V 2 o 5 and NbOPO 4 , its content is respectively 1%, 1.5%, 1% and 3%, all the other are identical with embodiment 1.

[0076] The final product was tested, and after 3 months of use, the pressure drop of the catalyst bed did not change, which was 15% lower than the pressure drop of the catalyst bed in Example 1 for the same use time.

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Abstract

The invention discloses a hydrodesulfurization process for FCC gasoline. A fixed bed reactor is adopted in the process and is filled with a hydrodesulfurization catalyst, wherein the catalyst comprises a carrier and an active component; the carrier is SAPO-5 doped with heteroatom Co<2+> in a synthesized framework structure; the active component is a mixture of MO2N, W2N, Mo2C and WC; the catalyst further contains a catalytic promoter; the catalytic promoter is a mixture of TiO2, CeO2, V2O5 and NbOPO4; reaction conditions of the fixed bed reactor are that the reaction temperature is 300 to 420DEG C, the hydrogen pressure is 2.5 to 3.5MPa, the volume ratio of hydrogen to gasoline is 500 to 800, and the volume space velocity is 1.5 to 4h<-1>. By using the process, the content of total sulfur in the FCC gasoline is reduced to below 10ppm so as to meet national V emission standard of the gasoline. Meanwhile, by means of the process, an octane value of the FCC gasoline is not remarkably reduced.

Description

technical field [0001] The invention relates to a gasoline hydrodesulfurization process, in particular to an FCC gasoline hydrodesulfurization process, more preferably 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 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. More than 80% of the sulfur in finished gasoline comes from catalytic cracking (FCC) gasoline. As crude oil continues to become heavier, the sulfur content in FCC gasoline will continue to increase. Foreign gasoline generally comes from FCC (34%), catalytic reforming (33%), and alkylation, isomerization and ether...

Claims

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Application Information

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IPC IPC(8): C10G45/12C10G67/14B01J29/85
CPCC10G45/12B01J29/85B01J2229/186C10G67/14C10G2300/202C10G2300/305C10G2300/70C10G2400/02
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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