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Polyamine flue gas desulfurizer and preparation method thereof

A technology of amine amide and desulfurizer, applied in the field of renewable polyamine amide flue gas desulfurizer and its preparation, can solve the problems of low utilization rate of absorbent, high industrial cost and operating cost, unfavorable practical application of industrial production, etc. , to achieve the effect of reducing electron cloud density, renewable energy consumption and large capacity

Active Publication Date: 2012-12-12
HEFEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the absorbents involved in the above two patents are ionic liquids or solids, the utilization rate of absorbents is low, and the industrial cost and operating expenses are large, which is not conducive to the practical application of industrial production.

Method used

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  • Polyamine flue gas desulfurizer and preparation method thereof
  • Polyamine flue gas desulfurizer and preparation method thereof
  • Polyamine flue gas desulfurizer and preparation method thereof

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Embodiment 1

[0026] A three-necked flask, a condensation reflux tube, a nitrogen vent tube, a sealed constant pressure dropping funnel and a constant temperature stirring water bath were assembled into a closed condensation reflux reaction device with nitrogen. Dissolve 0.2mol of diethylenetriamine in 30mL of toluene, add 0.1mol of methyl acrylate under nitrogen protection and stirring, and keep the temperature at 20 °C. After 24h of reaction, extract with 200mL of distilled water four times, and extract the water layer for four times. Collected together, distilled under reduced pressure to remove water, and the resulting product was denoted as T1. Continue vacuum distillation for T1, and take the fractions at 140±2°C, 165±2°C and 188±2°C, and record them as T2, T3 and T4, respectively.

[0027] figure 1It is the electrospray mass spectrum of the polyamine amide mixture T1 prepared by the present invention, the m / z value of the mass-to-charge ratio of the abscissa is the ratio of the rela...

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Abstract

The invention discloses a polyamine flue gas desulfurizer and a preparation method thereof. The polyamine flue gas desulfurizer is characterized by comprising the following components: a polynitrogen linear chain or an aminated matter with branched chains or derivates and short-chain unsaturated ester or diester or derivates with a matter amount proportion of 1:0.2-5. The preparation method comprises the following steps of: mixing the components for 48 hours under an air-isolated condition and at the temperature of 0-80 DEG C; extracting a product by distilled water; dewatering the product; separating a mixture of the obtained polyamine amine acid amide to obtain polyamine amine acid amide with n of 1-8; preparing the polyamine amine acid amide into an aqueous solution with weight percentage of 0.5-20; and adding citric acid or lactic acid to regulate a pH value to 3-7. The obtained polyamine acid amide flue gas desulfurizer has high SO2 absorption capacity, high desorption rate, low energy consumption of an absorption / desorption process, low toxicity, low oxidation rate, and the like and is suitable for a desulphurization technical process for discharging SO2 in flue gas.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization, and in particular relates to a renewable polyamine amide flue gas desulfurizer and a preparation method thereof. Background technique [0002] According to the 467th issue of "Mining Express" in 2008, my country's annual coal consumption is as high as 1.2 billion tons. 2 The annual emission exceeds 20,000 tons, and the smelting process of various metal mines will also produce a large amount of SO 2 . With SO 2 With the increase in emissions, the development of acid rain in my country is alarming, and the aggravation of acid rain pollution has caused major harm to ecosystems, building materials, agriculture and human health. Therefore, increase SO 2 control is increasingly important and urgent. [0003] As a new flue gas desulfurization technology, organic amine wet desulfurization technology has the advantages of high desulfurization efficiency, recyclable absorbent, and no ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14
Inventor 崔鹏郑争志王琪刘建芳李钰
Owner HEFEI UNIV OF TECH
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