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Organic amine compound absorbent for removal of carbon dioxide in fire coal flue gas

A coal-fired flue gas and carbon dioxide technology, which is applied in the field of flue gas pollution control, can solve problems such as high costs, which are difficult for enterprises and society to bear

Active Publication Date: 2013-11-20
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high cost makes it difficult for enterprises and society to bear

Method used

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  • Organic amine compound absorbent for removal of carbon dioxide in fire coal flue gas
  • Organic amine compound absorbent for removal of carbon dioxide in fire coal flue gas
  • Organic amine compound absorbent for removal of carbon dioxide in fire coal flue gas

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Take two parts of 15wt% organic amine composite absorbent with monoethanolamine MEA as the main body, wherein the content of monoethanolamine MEA is 8%, AEEA is 1%, PZ is 1%, DETA is 1.5%, AMP is 1.5%, sulfolane 1%, DEA 1%, corrosion inhibitor potassium chromate 0.1%, antioxidant potassium sodium tartrate 0.5%, and the balance is water. The preparation method of the organic amine composite absorbent for removing carbon dioxide in coal-fired flue gas is obtained by mixing the components in the formula ratio. Composite absorbent temperature is 40°C, gas phase CO 2 The partial pressures are 15kPa (Experiment 1 in Table 3), 45kPa (Experiment 2 in Table 3), and will contain CO 2 and N 2 The mixed gas of the mixed gas is passed into two parts of the above-mentioned composite absorbent respectively, and after the gas-liquid two-phase reaches equilibrium, the CO in the composite absorbent 2 The ratio of the moles of organic amines to the sum of the moles of organic amines in...

Embodiment 2

[0043] Take two parts of 15wt% organic amine composite absorbent with monoethanolamine MEA as the main body, wherein the content of monoethanolamine MEA is 8%, AEEA is 1%, PZ is 1%, DETA is 1.5%, AMP is 1.5%, sulfolane 1%, DEA 1%, corrosion inhibitor potassium chromate 0.1%, antioxidant potassium sodium tartrate 0.5%, and the balance is water. The preparation method of the organic amine composite absorbent for removing carbon dioxide in coal-fired flue gas is obtained by mixing the components in the formula ratio. At atmospheric pressure, gaseous CO 2 Partial pressure 15kPa (Experiment 1 in Table 4), 45kPa (Experiment 2 in Table 4), containing CO 2 and N 2 The mixed gas of the mixed gas is input into two parts of the composite absorbent respectively, and reaches saturation at a temperature of 40°C. After the absorption is saturated, the composite absorbent is heated to 112°C to control the CO in the regeneration gas. 2 The partial pressures are 15kPa and 45kPa respectively....

Embodiment 3

[0047] Take two parts of 20wt% organic amine composite absorbent with monoethanolamine (MEA) as the main body, wherein the content of monoethanolamine (MEA) is 8%, AEEA is 1%, MMEA is 1%, AMP is 1%, and PZ is 1%, DETA 1%, sulfolane 2%, DEA 2%, DETA 1%, TETA 1%, TBEE 1%, corrosion inhibitor potassium chromate 0.1%, antioxidant potassium sodium tartrate 0.5%, The balance is water. The preparation method of the organic amine composite absorbent for removing carbon dioxide in coal-fired flue gas is obtained by mixing the components in the formula ratio. The temperature of the composite absorbent is 45°C, under normal pressure, the gas phase CO 2 The partial pressure is 60kPa (Experiment 1 in Table 5), 85kPa (Experiment 2 in Table 5), will contain CO 2 and N 2 The mixed gas of the mixture is passed into two parts of the above-mentioned composite absorbent respectively, and after the gas-liquid two-phase reaches equilibrium, the CO in the solvent is absorbed 2 and the molar rati...

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Abstract

The invention discloses an organic amine compound absorbent for removal of carbon dioxide in fire coal flue gas; the organic amine compound absorbent comprises the following components: by mass, 10%-45% of a main absorbent component, 0-10% of an assistant absorbent component, 0.01%-6% of a corrosion inhibitor, 0.01-3% of an antioxidant, 0-5% of a defoaming agent and the balance of water; wherein the main absorbent component comprises the following components: account for the total mass percentage of the organic amine composite absorbent, 3%-20% of monoethanolamine MEA, 0-12% of 2-amino-2-methyl-1-propanol AMP, 1%-15% of sun of piperazine PZ and N-aminoethyl piperazine AEP and 1%-12% of sum of aminoethyl ethanolamine AEEA and N-methyl monoethanolamine MMEA; and the assistant absorbent comprises one or a plurality of component selected from the group comprising diethanol amine DEA, diethylenetriamine DETA, triethylene tetramine TETA, N-methyldiethanolamine MDEA, sulfolane and tertbutylaminoethoxyethanol TBEE. The organic amine compound absorbent has the advantages of good stability, large absorption capacity, high purification degree, low regeneration energy consumption, good desorption effect, great reduction of degradation loss of the compound absorbent in the process of using, and the like.

Description

technical field [0001] The invention relates to an organic amine composite absorbent, in particular to an organic amine composite absorbent for removing carbon dioxide in coal-fired flue gas. It belongs to the technical field of flue gas pollution control. Background technique [0002] As we all know, carbon dioxide is the main greenhouse gas that causes the "greenhouse effect" and warms the earth's climate. In recent years, as countries around the world pay attention to the global warming effect, the issue of carbon dioxide emissions has attracted worldwide attention. [0003] Flue gas from coal-fired boilers is one of the main sources of carbon dioxide emissions. It has large flue gas flow, low partial pressure, and contains a large amount of inert gas N. 2 , containing O 2 and H 2 O, containing pollutant SO 2 , NOx and smoke and other characteristics. CO capture from mixed flue gas is currently commonly used 2 The most common methods include chemical absorption, ph...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/62
CPCY02C10/04Y02A50/20Y02C20/40
Inventor 姜雨泽李新梅李莉李乐丰杨向平
Owner STATE GRID CORP OF CHINA
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