FCC (fluid catalytic cracking) gasoline hydrodesulfurization process

A hydrodesulfurization and desulfurization process technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrocarbon oil treatment products, etc., can solve the problems of large hydrogen consumption, olefins are prone to saturation, gasoline octane number reduction, etc.

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

[0043] The catalyst was prepared by impregnation method, and the carrier was doped 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 mass of the carrier, and their molar ratio is 1:0.4:0.3:0.8.

[0044] 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 gas...

Embodiment 2

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

[0050] All the other conditions are the same as in Example 1.

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

Embodiment 3

[0076] The catalyst contains catalytic promoter Cr 2 o 3 , ZrO 2 , CeO 2 , V 2 o 5 and NbOPO 4 , its content is respectively 1%, 1.5%, 2%, 1% and 3%, all the other are identical with embodiment 1.

[0077] The final product was tested, and after 3 months of use, the pressure drop of the catalyst bed did not change, which was 16.7% 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 FCC (fluid catalytic cracking) gasoline hydrodesulfurization process employing a fixed bed reactor; the fixed bed reactor is filled with a hydrodesulfurization catalyst that includes a support and an active ingredient; the support is KIT-1 with frame structure doped with heteroatom Co2+; the active ingredient is a mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the catalyst also comprises a catalysis aid that is a mixture of Cr2O3, ZrO3, CeO2, V2O5 and NbOPO4; the fixed bed reactor carries out reaction under the following conditions: reaction temperature 300-420 DEG C, hydrogen pressure 2.5-3.5 MPa, hydrogen-oil volume ratio 500-800, volume air speed 1.5-4 h<-1>; the process may provide total sulfur content of FCC gasoline reduced to 10 ppm and below to meet the gasoline standard GB5; the process also provides not evidently reduced octane value of FCC gasoline.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/08B01J29/03
CPCC10G45/08B01J29/0341B01J2229/183C10G2300/1037C10G2300/202C10G2300/70C10G2400/02
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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