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Composite material for desulfurization, preparation method of composite material and desulfurization process

A composite material and composite carrier technology, applied in chemical instruments and methods, petroleum industry, hydrocarbon oil treatment, etc., can solve problems such as octane number drop, high temperature and pressure hydrogen, etc., achieve large specific surface area, increase pore size, The effect of omitting the reduction processing step

Pending Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrodesulfurization process requires high temperature and pressure and a large amount of hydrogen consumption, and in the deep hydrodesulfurization process, the olefins in gasoline will be saturated by hydrogenation and its octane number will decrease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of composite materials

[0044] Grind 17.5g of petroleum coke into powder, then mix with 33.6g of potassium metaaluminate, 70g of potassium silicate (silicon oxide content 60wt%, modulus 3.3) and 49.5g of nickel nitrate, and place in a tube furnace. Start to heat up, and after the temperature exceeds 100°C, water vapor is introduced, and the space velocity is 50h -1 , continue to heat up to 650°C to start water vapor treatment for 180min, then stop feeding water vapor, under vacuum conditions (vacuum degree is -0.1MPa), lower the temperature to 180°C, and feed oxygen concentration of 3% oxygen / Nitrogen mixed gas for treatment, time 30min, then lowered to room temperature.

[0045] Grind the above-mentioned activated sample into powder, weigh it, mix it with deionized water at a mass ratio of 1:15, stir thoroughly, and then separate the solid and liquid until the pH value of the filtrate is neutral, and place the fixed sample in vacuum drying Dry in an...

Embodiment 2

[0050] (1) Preparation of composite materials

[0051] Grind 21g of petroleum coke into powder, then mix it with 24.2g of potassium metaaluminate, 63g of potassium silicate (silicon oxide content 60wt%, modulus 3.3) and 59.4g of nickel nitrate, place in a tube furnace, start Heat up, after the temperature exceeds 100°C, water vapor is introduced, and the space velocity is 50h -1 , continue to heat up to 700°C and start steam treatment for 180 minutes, then stop feeding water vapor, and under vacuum conditions (vacuum degree is -0.1MPa), the temperature drops to 180°C, and feed oxygen concentration of 3% oxygen / Nitrogen mixed gas for treatment, time 30min, then lowered to room temperature.

[0052] Grind the above-mentioned activated sample into powder, weigh it, mix it with deionized water at a mass ratio of 1:15, stir thoroughly, and then separate the solid and liquid until the pH value of the filtrate is neutral, and place the fixed sample in vacuum drying In an oven, dry...

Embodiment 3

[0057] (1) Preparation of composite materials

[0058] Grind 22.9g of petroleum coke into powder, then mix with 21.1g of potassium metaaluminate, 50.5g of potassium silicate (silicon oxide content 60wt%, modulus 3.3) and 74.3g of nickel nitrate, and place in a tube furnace , start to heat up, after the temperature exceeds 100°C, water vapor is introduced, and the space velocity is 50h -1 , continue to heat up to 750°C to start water vapor treatment for 180min, then stop feeding water vapor, under vacuum conditions (vacuum degree is -0.1MPa), lower the temperature to 180°C, and feed oxygen concentration of 3% oxygen / Nitrogen mixed gas for treatment, time 30min, then lowered to room temperature.

[0059] Grind the above-mentioned activated sample into powder, weigh it, mix it with deionized water at a mass ratio of 1:15, stir thoroughly, and then separate the solid and liquid until the pH value of the filtrate is neutral, and place the fixed sample in vacuum drying In an oven...

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Abstract

The invention discloses a composite material for desulfurization, a preparation method of the composite material and a desulfurization process. The composite material comprises a carrier, a first active component and a second active metal component, wherein the carrier is a silicon oxide-aluminum oxide composite carrier modified by petroleum coke-based activated carbon, the first active component is ZnO, and the second active component is a group VIII metal. The invention also provides a preparation method of the composite material for desulfurization and a desulfurization process using the composite material as an adsorption material. The composite material takes silicon oxide and aluminum oxide modified by petroleum coke-based activated carbon as a carrier, has larger specific surface area and pore volume and higher acidity, is more beneficial to the adsorption of reactants and the removal of products, and can improve the desulfurization efficiency.

Description

technical field [0001] The invention belongs to the field of petrochemical industry and relates to a desulfurization material, a preparation method and a desulfurization process. Background technique [0002] With the increasingly stringent environmental regulations and the continuous strengthening of people's environmental awareness, how to reduce the environmental pollution caused by vehicle exhaust emissions has aroused widespread concern. Like the United States, Europe, Japan and other countries and regions, China has continuously formulated new gasoline sulfur content standards, or even stricter standards, to control the increasingly serious air pollution caused by vehicle exhaust. Due to the unreasonable allocation of production equipment in my country's refineries, the proportion of catalytic gasoline from the FCC process in the finished gasoline is significantly higher than that of European and American countries, and most of the sulfur-containing compounds are from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J35/10C10G45/06
CPCB01J23/80B01J23/002C10G45/06B01J2523/00C10G2300/202C10G2400/02B01J35/615B01J35/635B01J2523/27B01J2523/31B01J2523/41B01J2523/847B01J2523/845
Inventor 金浩朱慧红吕振辉刘璐杨光杨涛
Owner CHINA PETROLEUM & CHEM CORP