Organic amine desulfurization desorption accelerant as well as preparation method and application thereof
A technology of accelerator and organic amine, which is applied in the field of organic amine desulfurization and desorption accelerator and its preparation, to achieve the effects of improving desorption efficiency, reducing desorption energy consumption, and accelerating mass transfer rate
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Embodiment 1
[0036] The organic amine absorbent used was N,N-dihydroxyethylpiperazine, the amine concentration was 20% by weight, concentrated sulfuric acid was added, the pH value of the solution was adjusted to 7, and the rest was water. After absorbing the simulated flue gas for 3 hours, the rich amine solution was obtained, and the rich amine solution was divided into 4 parts. One part was directly heated and desorbed at 105 °C for 4 hours without desorption accelerator, as a comparison; the other three parts were added to 1-3 in Table 1 respectively. No. desorption accelerator, and then heated the rich amine solution at 105 °C for 4 h. The weight ratio of the desorption accelerator to the organic amine desulfurizer is 0.05. The process effect is expressed by desorption rate and desorption energy consumption, and the results are shown in Table 2.
[0037] The desorption rate of table 2 embodiment one and desorption energy consumption result
[0038] Desorption accelerator ...
Embodiment 2
[0040] The organic amine absorbent used is the mixed amine of N,N-dihydroxyethylpiperazine and N-hydroxyethylpiperazine, and the amine concentration is 10% (weight), and concentrated sulfuric acid is added to adjust the pH value of the solution to 6.5 , and the rest is water. After absorbing the simulated flue gas for 6 hours, the rich amine solution was obtained. The rich amine solution was divided into 4 parts, and one part was directly heated and desorbed at 105 °C for 4 hours without adding desorption accelerator; for comparison, the remaining three parts were added to 4-6 in Table 1. No. desorption accelerator, and then heated the rich amine solution at 105 °C for 4 h. The weight ratio of the desorption accelerator to the organic amine desulfurizer is 0.05. The process effect is expressed by desorption rate and desorption energy consumption, and the results are shown in Table 3.
[0041] The desorption rate of table 3 embodiment two and desorption energy consumption res...
Embodiment 3
[0044] The organic amine absorbent used is the mixed amine of N,N-dihydroxypropylpiperazine and N-hydroxyethylpiperazine, the amine concentration is 20% (weight), and concentrated sulfuric acid is added, and the pH value of the solution is adjusted to 6.5 , and the rest is water. After absorbing the simulated flue gas for 5 hours, the rich amine solution was obtained. The rich amine solution was divided into 4 parts, and one part was directly heated and desorbed at 105 °C for 4 hours without adding desorption accelerator; for comparison, the remaining three parts were added to 7-9 in Table 1 respectively. No. desorption accelerator, and then heated the rich amine solution at 105 °C for 4 h. The weight ratio of desorption accelerator to organic amine desulfurizer was 0.10. The process effect is expressed by desorption rate and desorption energy consumption, and the results are shown in Table 4.
[0045] The desorption rate of table 4 embodiment three and desorption energy con...
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