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FCC (fluid catalytic cracking) gasoline hydrodesulfurization process

A hydrodesulfurization and desulfurization process technology, which is applied in the petroleum industry, processing hydrocarbon oil, refining hydrocarbon oil, etc., can solve the problems of large hydrogen consumption, easy saturation of olefins, and large equipment investment

Inactive Publication Date: 2016-12-07
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

[0036] 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.

[0037] 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

[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 0.7% 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.

[0043] All the other conditions are the same as in Example 1.

[0044] The final product was tested and its research octane number was still 94.0, while the total sulfur content was reduced to 2 ppm.

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Abstract

The invention discloses an FCC (fluid catalytic cracking) gasoline hydrodesulfurization process. The FCC gasoline hydrodesulfurization process is characterized in that a fixed bed reactor is adopted, hydrodesulfurization catalyst is filled in the fixed bed reactor, and the catalyst includes a carrier and an activated component; the carrier is characterized in that a synthesized skeleton structure is doped with SAPO (silicoaluminophosphate)-5 of heteroatom Co<2+>; the activated component is a mixture of MO2N, W2N, Mo2C and WC; the fixed bed reactor is under reaction conditions that reaction temperature is 300-420DEG C, hydrogen pressure is 2.5-3.5MPa, hydrogen to gasoline volume ratio is 500-800, and volume space velocity is 1.5-4 hours<-1>. By the process, total sulfur content in the FCC gasoline can be reduced to less than 10ppm, and the national five standards of the gasoline are met; meanwhile, the process further enables octane value of the FCC not to be reduced significantly.

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): C10G45/12B01J29/85C10G45/20
CPCC10G45/12B01J29/85B01J2229/183C10G45/20C10G2300/202C10G2400/02
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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