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Composite organic alcohol amine absorbing agent for carbon dioxide

A carbon dioxide, organic alcohol amine technology, applied in chemical instruments and methods, dispersed particle separation, air quality improvement and other directions, can solve the problems of high solution loss, system equipment corrosion, large regeneration energy consumption, etc., to achieve high absorption efficiency, The effect of reducing energy consumption for regeneration and reducing loss of solution

Inactive Publication Date: 2014-12-10
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current carbon dioxide liquid absorbent is mainly based on a single component, the main component is mostly monoethanolamine (MEA), and corrosion inhibitors such as vanadium pentoxide are added. The existing problems are large regeneration energy consumption and high solution loss. The corrosion of the system equipment is also relatively serious, and it is currently in a state of being gradually replaced

Method used

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  • Composite organic alcohol amine absorbing agent for carbon dioxide
  • Composite organic alcohol amine absorbing agent for carbon dioxide
  • Composite organic alcohol amine absorbing agent for carbon dioxide

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A composite organic alkanolamine carbon dioxide absorbent, based on the overall mass of the absorbent as 100%, wherein the components and their mass percentages are as follows:

[0027] Main absorbent: monoethanolamine 50.97%, triethanolamine 49%, antioxidant: sodium sulfite 0.01%, corrosion inhibitor: sodium vanadate 0.01% and complexing agent: edetate disodium salt 0.01%.

Embodiment 2

[0029] A composite organic alkanolamine carbon dioxide absorbent, based on the overall mass of the absorbent as 100%, wherein the components and their mass percentages are as follows:

[0030] Main absorbent: monoethanolamine 67%, diethanolamine 30%, antioxidant: sodium sulfite 1%, corrosion inhibitor: sodium molybdate 1%, absorption enhancer: glycerol 0.5%, complexing agent: ethylenediaminetetraacetic acid Disodium salt 0.3%, defoamer: simethicone 0.1% and surfactant: sodium dodecylbenzenesulfonate 0.1%.

Embodiment 3

[0032] A composite organic alkanolamine carbon dioxide absorbent, based on the overall mass of the absorbent as 100%, wherein the components and their mass percentages are as follows:

[0033] Main absorbent: N-methyldiethanolamine 80%, auxiliary absorbent: piperazine 17.2%, antioxidant: potassium sulfite 1%, corrosion inhibitor: sodium vanadate 1%, absorption enhancer: potassium hydroxide 0.5% , glycerol 0.1%, complexing agent: tetrasodium edetate 0.1% and defoamer: XIAMETER AFE-14100.1%.

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Abstract

The invention relates to a composite organic alcohol amine absorbing agent for carbon dioxide, belonging to the technical field of chemical materials. The absorbing agent is prepared from the following components in percentage by weight: 80-99.97% of a main absorbing agent, 0-19% of an auxiliary absorbing agent, 0.01-1% of an antioxidant, 0.01-1% of a corrosion inhibitor, 0-1% of an absorption enhancing agent, 0.01-1% of a complexing agent, 0-0.1% of a defoaming agent and 0-1% of a surface active agent. When being used under normal pressure, the absorbing agent is at -20-70 DEG C for absorbing carbon dioxide and is at 70-120 DEG C for desorbing carbon dioxide. The absorbing agent has low regeneration energy consumption, low solution loss, high absorbing efficiency and has high feasibility when being applied to flue gases in power plants and the like.

Description

technical field [0001] The invention relates to a composite organic alcohol amine carbon dioxide absorbent, which belongs to the technical field of chemical materials. Background technique [0002] At present, the burning of energy releases a large amount of carbon dioxide, forming the greenhouse effect, causing global warming, and bringing extreme climates such as floods and droughts. The Chinese government promises to reduce carbon dioxide emissions per unit of GDP by 40% to 45% by 2020, but the cost of recycling carbon dioxide is still relatively high. Improvements in CO2 absorbing solutions are a key factor in reducing costs. [0003] The current carbon dioxide liquid absorbent is mainly based on a single component, the main component is mostly monoethanolamine (MEA), and corrosion inhibitors such as vanadium pentoxide are added. The existing problems are large regeneration energy consumption and high solution loss. The corrosion of the system equipment is also relativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14
CPCY02A50/20Y02C20/40
Inventor 郭强焦桂萍邓辉魏全敏李勇杨晓冬
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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