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Oxygen carrier composition and preparation method thereof

A composition and oxygen carrier technology, applied in the petroleum industry, fuel additives, fuels, etc., can solve the problems of low oxygen carrying capacity, poor oxygen release and absorption effect, etc., to improve stability, increase oxygen carrying capacity, improve The effect of carrier activity

Pending Publication Date: 2020-09-25
山西恒投环保节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides an oxygen carrier composition, which solves the problems of low oxygen carrying capacity and poor oxygen release and absorption effect of the existing oxygen carrier, and forms a porous system by utilizing the active characteristics of alumina , while enhancing the activity of the carrier, it effectively increases the oxygen carrying capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of an oxygen carrier composition, comprising the steps of:

[0023] Step 1, add aluminum hydroxide to absolute ethanol (1L), stir evenly, then add polyvinylpyrrolidone and ultrasonically disperse completely at low temperature to obtain a uniform dispersion; the concentration of aluminum hydroxide in absolute ethanol is 100g / L , the stirring speed is 1000r / min, the addition of the polyvinylpyrrolidone is 30% of the mass of aluminum hydroxide, the temperature of low-temperature ultrasonic dispersion is 20°C, and the ultrasonic frequency is 50kHz,

[0024] Step 2: Add the uniform dispersion liquid into the mold for constant temperature extrusion, then soak it in absolute ethanol, stir evenly, and dry to obtain a porous body. The temperature of the constant temperature extrusion is 80°C, the pressure is 2MPa, and the uniform stirring The speed is 1000r / min, the drying temperature is 80°C, and the particle size of the porous body particles is 3mm;

[00...

Embodiment 2

[0032] A preparation method of an oxygen carrier composition, comprising the steps of:

[0033] Step 1, add aluminum hydroxide to absolute ethanol (1L), stir evenly, then add polyvinylpyrrolidone and ultrasonically disperse completely at low temperature to obtain a uniform dispersion; the concentration of aluminum hydroxide in absolute ethanol is 200g / L , the stirring speed is 2000r / min, the addition of the polyvinylpyrrolidone is 40% of the mass of aluminum hydroxide, the temperature of low-temperature ultrasonic dispersion is 30°C, and the ultrasonic frequency is 90kHz,

[0034] Step 2: Add the uniform dispersion liquid into the mold for constant temperature extrusion, then soak it in anhydrous ethanol, stir evenly, and dry to obtain a porous body. The speed is 2000r / min, the drying temperature is 100°C, and the particle size of the porous body particles is 10mm;

[0035] Step 3, adding n-butyl titanate to absolute ethanol (1L) and stirring evenly to form a titanium alcohol...

Embodiment 3

[0041] A preparation method of an oxygen carrier composition, comprising the steps of:

[0042] Step 1, add aluminum hydroxide to absolute ethanol (1L), stir evenly, then add polyvinylpyrrolidone and ultrasonically disperse completely at low temperature to obtain a uniform dispersion; the concentration of aluminum hydroxide in absolute ethanol is 150g / L , the stirring speed is 1500r / min, the addition of the polyvinylpyrrolidone is 35% of the mass of aluminum hydroxide, the temperature of low-temperature ultrasonic dispersion is 25°C, and the ultrasonic frequency is 70kHz,

[0043] Step 2: Add the uniform dispersion liquid into the mold for constant temperature extrusion, then soak it in absolute ethanol, stir evenly, and dry to obtain a porous body. The speed is 1500r / min, the drying temperature is 90°C, and the particle size of the porous body particles is 7mm;

[0044] Step 3, adding n-butyl titanate to absolute ethanol (1L) and stirring evenly to form a titanium alcohol so...

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PUM

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Abstract

The invention belongs to the field of chemical looping combustion, and relates to the field of chemical looping combustion oxygen carriers, in particular to an oxygen carrier composition and a preparation method thereof. According to the invention, aluminum oxide is used as a first carrier, composite titanium oxide is used as a second carrier, iron oxide is used as an active matter, and the aperture range of an oxygen carrier is 100 nm to 50 microns; and the specific preparation method is provided. The problems that an existing oxygen carrier is low in oxygen carrying capacity and poor in oxygen releasing and absorbing effect are solved, a porous system is formed by means of the active characteristic of aluminum oxide, and the oxygen carrying capacity is effectively improved while the activity of the carrier is improved.

Description

technical field [0001] The invention belongs to the field of chemical looping combustion, and relates to the field of chemical looping combustion oxygen carriers, in particular to an oxygen carrier composition and a preparation method thereof. Background technique [0002] Chemical chain combustion is a novel combustion method. The fuel is not in direct contact with the air. The metal oxide is used as the oxygen carrier. The oxygen carrier is oxidized in the air at a certain temperature to combine with oxygen; then it is reduced with the fuel gas. reaction, releasing oxygen. The product of the gas phase reaction is only CO 2 and H 2 O (gas), condense water to obtain high-purity CO 2 . CO in chemical looping combustion 2 It will not be diluted by nitrogen in the air, so CO can be realized without energy loss 2 separate. [0003] As a medium, the oxygen carrier circulates between the two reactors, and continuously transfers the oxygen in the air reactor and the heat gen...

Claims

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Application Information

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IPC IPC(8): C10L10/00
CPCC10L10/00
Inventor 齐恒
Owner 山西恒投环保节能科技有限公司