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Synthetic method of spherical nitrogen-enriched micro-reticular resin for CO2 adsorption

A technology of microporous resin and synthesis method, applied in the direction of adsorption, separation method, chemical instrument and method, etc., can solve the problems of difficult adsorption material, high operation cost of adsorption and desorption technology, low pressure drop, etc.

Inactive Publication Date: 2012-05-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, currently commercially available adsorbent materials are effective in adsorbing and capturing CO in the flue gas of coal-fired power plants. 2 However, there are the following key problems: 1) It is difficult for the adsorption material to satisfy high adsorption capacity and high adsorption selectivity at the same time only relying on physical adsorption or chemical adsorption; It has comprehensive properties such as water resistance, oxidation resistance, small pressure drop, long life and high mechanical strength; 3) The operation cost of adsorption and desorption technology is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Use benzaldehyde and dicyandiamide as organic raw materials, water as solvent, add polyvinyl alcohol surfactant, under the stirring conditions of 180°C, 0.8MPa, and 300 rpm, in a 2L stirring tank, keep stirring for 36h . Wherein the molar ratio of benzaldehyde and dipolycyanamide is 2:1, the mass ratio of surfactant and water is 1:500, and the mass ratio of organic raw material and water is 1:50. The specific surface area of ​​the synthesized spherical nitrogen-rich resin is 210m 2 / g, the N content is 14%, the average spherical diameter is 0.8mm, and the pore size distribution is 0.7~100nm. At 25°C and 100kPa, the material is resistant to CO 2 The saturated adsorption capacity is 0.6mmol / g.

Embodiment 2

[0018] Using benzaldehyde and melamine as organic raw materials, water as solvent, adding polyvinyl alcohol surfactant, under the stirring conditions of 180°C, 0.8MPa, and 300 rpm, in a 2L stirring tank, continue stirring for 36h. Wherein the molar ratio of benzaldehyde to melamine is 2:1, the mass ratio of surfactant to water is 1:500, and the mass ratio of organic raw material to water is 1:50. The specific surface area of ​​the synthesized spherical nitrogen-rich resin is 450m 2 / g, the N content is 27%, the pore size distribution is 0.7-60nm, and the average spherical diameter is 0.8mm. At 25°C and 100kPa, the material is resistant to CO 2 The saturated adsorption capacity is 1.3mmol / g.

Embodiment 3

[0020] Using terephthalaldehyde and melamine as organic raw materials, water as solvent, adding polyvinyl alcohol surfactant, under the stirring conditions of 180°C, 0.8MPa, and 300 rpm, in a 2L stirring tank, keep stirring for 36h. The molar ratio of terephthalaldehyde to melamine is 2:1, the mass ratio of polyvinyl alcohol to water is 1:500, and the mass ratio of organic raw materials to water is 1:50. The specific surface area of ​​the synthesized spherical nitrogen-rich microporous resin is 680m 2 / g, the N content is 31%, the pore size distribution is 0.7-2nm, and the average spherical diameter is 0.8mm. At 25°C and 100kPa, the material is resistant to CO 2 The saturated adsorption capacity is 1.9mmol / g.

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Abstract

The invention discloses a synthetic method of a spherical nitrogen-enriched micro-reticular resin for CO2 adsorption, characterized by: mainly using amines and aldehydes as raw materials, carrying out one-step method to synthesize a spherical adsorption material under the conditions of a temperature of 120-300 DEG C and a pressure of 0.1-3 MPa, under the effect of a surfactant, wherein, the spherical adsorption material has a specific surface area of 1500 m<2> / g, a sphere diameter of 0.8-2 mm, and a saturation adsorption capacity of CO2 being 4 mmol / g. The resin has the advantages of easy synthetic method, high adsorption capacity of CO2, good adsorption selectivity, and good spherical structure, and has great significance for promoting the development of CO2 adsorption and gathering technology.

Description

Technical field: [0001] The invention relates to a high-efficiency CO 2 The invention relates to a method for synthesizing an adsorption material, in particular to a method for synthesizing a spherical nitrogen-rich microporous resin. Background technique [0002] After experiencing various disasters caused by global warming, the recent CO 2 The "capture, storage and utilization" of CO2 has gradually become a research hotspot in the scientific community, and CO 2 Advanced capture technology is the premise of its further storage and utilization. Adsorption and capture technology is regarded as the most promising and competitive CO due to its advantages of fast adsorption and desorption, high efficiency, low energy consumption, and no need to consider equipment corrosion. 2 capture technology. It is well known that in all CO 2 Among emission sources, CO in the flue gas of coal-fired power plants 2 accounts for more than 60% of its total emissions, and obviously, capturin...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02B01D53/81B01D53/62
CPCY02C10/08Y02A50/20Y02C20/40
Inventor 詹亮王艳莉冯军伟乔文明凌立成
Owner EAST CHINA UNIV OF SCI & TECH
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