Hydrogen desulfurization catalyst

A hydrodesulfurization and catalyst technology, which is applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as large consumption of hydrogen, harsh reaction conditions for hydrodesulfurization, and reduction of gasoline octane number.

Inactive Publication Date: 2017-01-11
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 Cu 2+ MCM-41, Cu 2+ The doping amount 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 bath...

Embodiment 2

[0045] The catalyst was prepared by impregnation method, and the carrier was doped Cu 2+ MCM-41, Cu 2+ The doping amount 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 still had a research octane rating of 94, while the total sulfur content was reduced to 3 ppm.

Embodiment 3

[0072] The catalyst contains catalytic promoter Cr 2 o 3 , ZrO 2 , CeO 2 , V 2 o 5 and NbOPO 4 , its content is respectively 3%, 1%, 1.5%, 1% and 3%, all the other are identical with embodiment 1.

[0073] Test the final product, its research method octane number reaches 94, and the total sulfur content is reduced to 2ppm, and after it is used for 3 months, the pressure drop of the catalyst bed does not have any change, compared with the catalyst bed of the same use time embodiment 1 16% reduction in pressure drop.

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Abstract

The invention discloses a hydrogen desulfurization catalyst. The catalyst includes a carrier and an active component; the carrier is MCM-41 mixed with heteroatom Cu2+ in a compounded skeleton structure, and the mixing amount is 0.56-0.75% of MCM-41 by weight; the active component is mixture of dimolybdate nitride MO2N, tungsten nitride W2N, molybdenum carbide Mo2C and tungsten carbide WC; the total content of the active component is 1-15% of the carrier MCM-41 by weight; the catalyst further includes catalytic addictive, and the catalytic addictive is the mixture of Cr2O3, ZrO2, CeO2, V2O5 and NbOPO4. The catalyst can be applied to reduce total catalytic addictive in FCC (family car China) gasoline to 10 ppm below, so as to meet the five national standards of gasoline; meanwhile, the application of the catalyst can prevent the octane value of FCC gasoline from obviously reducing.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a hydrodesulfurization 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 etherification ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/12B01J29/03B01J29/04
CPCC10G45/12B01J29/0341B01J29/045B01J2229/183C10G2300/1037C10G2300/202C10G2300/70C10G2400/02
Inventor 朱忠良
Owner 锡山区绿春塑料制品厂
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