Composite support hydrodesulfurization catalyst

A hydrodesulfurization and catalyst technology is applied in the field of composite carrier catalysts and hydrodesulfurization catalysts, and can solve the problems of large hydrogen consumption, harsh reaction conditions for hydrodesulfurization, and reduction of gasoline octane number.

Inactive Publication Date: 2017-05-10
过冬
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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

[0045] The catalyst was prepared by impregnation method, and the carrier was a mixture of MSU-G, SBA-15 and HMS, and the mixing ratio was 1:1.1:0.5. 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.

[0046] 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-liquid separation.

[004...

Embodiment 2

[0051] The catalyst is prepared by the impregnation method, and the carrier is a mixture of MSU-G / SBA-15 complex, MSU-G / HMS and SBA-15 / HMS complex, wherein the ratio of MSU-G, SBA-15 and HMS is the same as in the example 1 is the same. The active component molybdenum nitride MO 2 N, tungsten nitride W 2N, 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.

[0052] All the other conditions are the same as in Example 1.

[0053] The final product was tested and still had a research octane rating of 94, while the total sulfur content was reduced to 3 ppm.

Embodiment 3

[0081] 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.

[0082] The final product was tested, and after 3 months of use, the pressure drop of the catalyst bed did not change, which was 14.1% lower than the pressure drop of the catalyst bed in Example 1 for the same use time.

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PUM

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Abstract

The invention discloses a hydrodesulfurization catalyst, comprising a support and an active component; the support is a composite or mixture of MSU-G, SBA-15 and HMS, the active component is a mixture of dimolybdenum nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC, the total content of the active component accounts 1-15% of the weight of the support, the catalyst also comprises a cocatalyst, and the cocatalyst is a mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4. The catalyst is capable of reducing total sulfur content of FCC (fluid catalytic cracking) gasoline to 5 ppm and below so that the gasoline meets the gasoline standard G5. In addition, by using the catalyst, octane value of FCC gasoline is not significantly decreased.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80C10G45/12
CPCB01J29/80B01J2229/20C10G45/12C10G2300/1037C10G2300/202C10G2300/70
Inventor 过冬
Owner 过冬
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