Hydrogenating desulfurization catalyst

Abstract

The invention discloses a hydrogenating desulfurization catalyst. The catalyst comprises a carrier and an active component, wherein the carrier is formed by doping heteroatoms Cu<2+> to KIT-1 in a synthesizing skeleton structure, wherein the doping quantity is 0.56wt%-0.75wt% of the KIT-1; and the active component is a mixture of bimolybdenum nitride MO2N, wolfram nitride W2N, molybdenum carbide Mo2C and wolfram carbide WC, wherein the content of the active component is 1wt%-15wt% of the carrier namely the KIT-1. The catalyst can enable the content of total sulfur in FCC gasoline to be reduced to 10ppm or below, and besides, the catalyst is used, so that the octane rating of the FCC gasoline is not reduced obviously.

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 ...

Examples

Embodiment 1

[0032] The catalyst was prepared by impregnation method, and the carrier was doped Cu 2+ KIT-1, Cu 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.

[0033] 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

[0038] The catalyst was prepared by impregnation method, and the carrier was doped Cu 2+ KIT-1, Cu 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.

[0039] All the other conditions are the same as in Example 1.

[0040] The final product was tested and its research octane number was still 94.0, while the total sulfur content was reduced to 2 ppm.

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 ...

Examples

Embodiment 1

[0032] The catalyst was prepared by impregnation method, and the carrier was doped Cu 2+ KIT-1, Cu 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.

[0033] 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

[0038] The catalyst was prepared by impregnation method, and the carrier was doped Cu 2+ KIT-1, Cu 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.

[0039] All the other conditions are the same as in Example 1.

[0040] The final product was tested and its research octane number was still 94.0, while the total sulfur content was reduced to 2 ppm.