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A hydrofining catalyst

A hydrofining and catalyst technology, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of large equipment investment, lower octane number of gasoline, and large hydrogen consumption

Inactive Publication Date: 2017-02-08
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

[0039] The catalyst was prepared by impregnation method, and the carrier was doped Co 2+ For MCM-41, the doping amount of Co2+ in MCM-41 is controlled at 0.65% of the mass of the carrier. 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.

[0040] 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...

Embodiment 2

[0045] The catalyst is prepared by impregnation method, the carrier is MCM-41 doped with Co2+, and the doping amount of Co2+ in MCM-41 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.

[0046] All the other conditions are the same as in Example 1.

[0047] The final product was tested and its research octane number was still 93.9, while the total sulfur content was reduced to 2ppm.

Embodiment 3

[0072] 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.

[0073] The final product was tested, and after 3 months of use, the pressure drop of the catalyst bed did not change, which was 18% lower than the pressure drop of the catalyst bed in Example 1 for the same use time.

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Abstract

A hydrodesulfurization catalyst is disclosed. The catalyst comprises a carrier and an active component. The carrier is MCM-41 the synthesis skeleton of which is doped with Co<2+> that is a heteroatom, with the doping amount being 0.56-0.75% by weight of the MCM-41. The active component is a mixture of dimolybdenum nitride (Mo<2>N), tungsten nitride (W2N), molybdenum carbide (Mo<2>C) and tungsten carbide (WC). The total weight of the active component is 1-15% of the weight of the carrier MCM-41. The catalyst also comprises a catalytic promoter that is a mixture of TiO2, CeO2, V2O5 and NbOPO4. The catalyst can reduce the total sulfur content of FCC gasoline to 10 ppm or below, thus meeting the national V emission standard of gasoline in China. In addition, through adoption of the catalyst, the octane number of the FCC gasoline is not obviously reduced.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a hydrodesulfurization refining catalyst, more preferably to a catalyst for hydrodesulfurization of FCC gasoline and reducing the range of octane number reduction. 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 etheri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03C10G45/08
CPCC10G45/08B01J21/063B01J23/10B01J23/22B01J27/195B01J29/0341C10G2300/70B01J2229/183B01J2229/186B01J35/19
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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