Phase change organic amine absorbent
An absorbent and organic amine technology, which is applied in the field of phase-change organic amine absorbents, can solve problems such as high liquid level, lower absorption effect, and influence on purification system, so as to prolong service life, improve stability, and reduce regeneration energy consumption Effect
Inactive Publication Date: 2019-03-05
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary
Problems solved by technology
[0002] In the actual flue gas purification process of coal-fired power plants, the flue gas components from the power plant are complex, and the flue gas after dedusting still contains some ultra-fine dust impurities, Fe 3 o 4 , Fe, etc. After these substances enter the absorption tower quickly, it is easy to cause foaming of the desulfurization or decarburization solution. The generation of foam will cause the following three aspects: (1) Due to the foaming of the solution in the absorption tower, the absorption must be reduced The amount of liquid used, which in turn affects the absorption capacity of the absorbent
(2) When the absorption liquid separates acid gas, the reaction occurs in the gas-liquid two-phase, the bubbles in the absorption tower will cause the gas to stay, and the foam will isolate the gas-liquid contact and reduce the absorption effect
(3) The accumulation of foam in the absorption tower will cause the liquid level to be falsely high, and in severe cases, it will affect the entire purification system
[0005] At present, this technology has not been mentioned in the field of gas purification, but the development of this kind of additive based on industrial applications and strong operability is very important for gas purification
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0019] The experiment was carried out under the same conditions as in Comparative Example 1, and the phase change absorbent 2# formula used was 20 g of monoethanolamine, 80 g of polyethylene glycol dimethyl ether and 0.1 g of tributyl phosphate. Record the foam height and defoaming time, and the results are shown in Table 1.
Embodiment 2
[0021] The experiment was carried out under the same conditions as in Comparative Example 1, and the phase change absorbent 3# formula used was 20 g of monoethanolamine, 80 g of polyethylene glycol dimethyl ether and 0.05 g of tributyl phosphate. Record the foam height and defoaming time, and the results are shown in Table 1.
Embodiment 3
[0023] The experiment was carried out under the same conditions as in Comparative Example 1, and the phase change absorbent 4# formula used was 20 g of monoethanolamine, 80 g of polyethylene glycol dimethyl ether and 0.2 g of tributyl phosphate. Record the foam height and defoaming time, and the results are shown in Table 1.
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The invention discloses a phase change organic amine absorbent, which is used to separate acidic gas and has an anti-foaming function, and belongs to the field of gas purifying technologies. The phasechange organic amine absorbent is composed of organic amine, polyether, and an antifoaming agent. The organic amine is the solute, the polyether is taken as the solvent, and the organic amine and polyether form the main body of the absorbent. During the acidic gas removal process, an organic phase and a carrier phase are formed in the solution, the organic phase is polyether, the carrier phase issalts generated by the reactions between organic amine and acidic gas, at the same time, a certain amount of antifoaming agent is added, and the foaming is inhibited during the acidic gas removal process therefore.
Description
technical field [0001] The invention relates to a phase-change organic amine absorbent used for acid gas separation and anti-foaming performance, which belongs to the field of gas separation or purification. The method will show good application prospects in chemical engineering, material modification, wastewater treatment, oil extraction, gas purification or separation and other chemical fields. Background technique [0002] In the actual flue gas purification process of coal-fired power plants, the flue gas components from the power plant are complex, and the flue gas after dedusting still contains some ultra-fine dust impurities, Fe 3 o 4 , Fe, etc. After these substances enter the absorption tower quickly, it is easy to cause foaming of the desulfurization or decarburization solution. The generation of foam will cause the following three aspects: (1) Due to the foaming of the solution in the absorption tower, the absorption must be reduced The amount of liquid used wil...
Claims
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IPC IPC(8): B01D53/14B01D19/04
CPCB01D19/0404B01D19/0409B01D19/0418B01D53/1456B01D53/1468B01D53/1475B01D53/1481B01D53/1487B01D2252/20478B01D2252/205B01D2252/50B01D2257/302B01D2257/304B01D2257/306B01D2257/40B01D2257/504
Inventor 毛松柏陈曦汪东江洋洋黄汉根
Owner CHINA PETROLEUM & CHEM CORP