A kind of preparation method of desulfurizer

Abstract

The invention belongs to the fields of material chemistry, gas separation or purification and the like, and relates to a novel preparation method for an efficient desulfurization agent, wherein an ultrasonic synergism method is adopted to prepare the supported desulfurization agent. The preparation method comprises: dissolving tetraethoxysilane in an alcohol mixed solution, and carrying out stirring heating, wherein a mass ratio of the tetraethoxysilane to the alcohol mixed solution is 0.1-1:1, and the heating temperature is 50-100 DEG C; and adding Na2CO3 to the obtained solution, continuously carrying out mechanical stirring, opening an ultrasonic irradiation device, and adding distilled water to produce a transparent gluey material, wherein the reaction temperature is 50-100 DEG C, and the reaction time is controlled to 1-10 h; and closing the ultrasound, and aging the gluey material at a room temperature to obtain the target desulfurization agent. With the preparation method for ultrasonic preparation of the supported desulfurization agent, the excellent desulfurization agent with characteristics of high specific surface area, high activity, good desulfurization performance and more recycling times can be prepared, and requirements of researches and applications of the after-combustion dry desulfurization can be easily met.

Description

technical field

[0001] The invention relates to a method for ultrasonically coordinated preparation of a loaded desulfurizer, which belongs to the fields of material chemistry, gas separation or purification, and the like. Background technique

[0002] Atmospheric SO 2 Most of the emissions come from the burning of fossil fuels. SO released from coal combustion 2 accounts for two-thirds of total emissions, so during coal combustion, SO 2 Control is a very important issue in the energy industry.

[0003] Flue gas desulfurization (FGD), as the most important method of post-combustion desulfurization, is the most widely used and most effective way to control SO in the world. 2 emission technology. The use of renewable adsorbents can not only recover sulfur into easily sold products such as sulfuric acid or sulfur, but also has high desulfurization efficiency and simultaneous removal of nitrogen oxides.

[0004] At present, the installation of flue gas desulfurization devi...

Examples

Embodiment 1

[0023] Dissolve 34.65g tetraethyl orthosilicate in a mixed solution of 20.65g ethylene glycol and 20.00g ethanol, stir and heat to 80°C, add 2gNa 2 CO 3 In the above solution, continue to stir for 30 minutes, turn on the 20kHz probe type ultrasonic continuous treatment, the transducer is a piezoelectric ceramic ultrasonic transducer, and the ultrasonic sound intensity is 0.3W / cm 2 , and then add 60.00 g of ethanol and 15.00 g of distilled water. Keep at 80°C for 8 hours to form a transparent jelly. At this time, turn off the ultrasound, and age the jelly at room temperature for 24 hours to obtain the target product in white flakes. The specific surface area of ​​this desulfurizer is measured to be 216.31m 2 / g.

Embodiment 2

[0025] Dissolve 34.65g tetraethyl orthosilicate in a mixed solution of 20.65g ethylene glycol and 20.00g ethanol, stir and heat to 80°C, add 2gNa 2 CO 3 In the above solution, continue to stir for 30 minutes, turn on the 20kHz probe type ultrasonic, and process continuously. The transducer is a piezoelectric ceramic ultrasonic transducer, and the ultrasonic sound intensity is 1.0W / cm 2 , and then add 60.00 g of ethanol and 15.00 g of distilled water. Keep at 80°C for 8 hours to form a transparent jelly. At this time, turn off the ultrasound and age the jelly at room temperature for 24 hours to obtain the target product as white powder. The specific surface area of ​​this desulfurizer is measured to be 255.46m 2 / g.

Embodiment 3

[0027] Dissolve 34.65g tetraethyl orthosilicate in a mixed solution of 20.65g ethylene glycol and 20.00g ethanol, stir and heat to 80°C, add 2gNa 2 CO 3 In the above solution, continue to stir for 30 minutes, turn on the 40kHz tank ultrasonic, continuous processing, the transducer is a piezoelectric ceramic ultrasonic transducer, and the ultrasonic sound intensity is 6.0W / cm 2 , and then add 60.00 g of ethanol and 15.00 g of distilled water. Keep at 80°C for 8 hours to form a transparent jelly. At this time, turn off the ultrasound and age the jelly at room temperature for 24 hours to obtain the target product as white powder. The specific surface area of ​​this desulfurizer is measured to be 200.18m 2 / g.

technical field

[0001] The invention relates to a method for ultrasonically coordinated preparation of a loaded desulfurizer, which belongs to the fields of material chemistry, gas separation or purification, and the like. Background technique

[0002] Atmospheric SO 2 Most of the emissions come from the burning of fossil fuels. SO released from coal combustion 2 accounts for two-thirds of total emissions, so during coal combustion, SO 2 Control is a very important issue in the energy industry.

[0003] Flue gas desulfurization (FGD), as the most important method of post-combustion desulfurization, is the most widely used and most effective way to control SO in the world. 2 emission technology. The use of renewable adsorbents can not only recover sulfur into easily sold products such as sulfuric acid or sulfur, but also has high desulfurization efficiency and simultaneous removal of nitrogen oxides.

[0004] At present, the installation of flue gas desulfurization devi...

Examples

Embodiment 1

[0023] Dissolve 34.65g tetraethyl orthosilicate in a mixed solution of 20.65g ethylene glycol and 20.00g ethanol, stir and heat to 80°C, add 2gNa 2 CO 3 In the above solution, continue to stir for 30 minutes, turn on the 20kHz probe type ultrasonic continuous treatment, the transducer is a piezoelectric ceramic ultrasonic transducer, and the ultrasonic sound intensity is 0.3W / cm 2 , and then add 60.00 g of ethanol and 15.00 g of distilled water. Keep at 80°C for 8 hours to form a transparent jelly. At this time, turn off the ultrasound, and age the jelly at room temperature for 24 hours to obtain the target product in white flakes. The specific surface area of ​​this desulfurizer is measured to be 216.31m 2 / g.

Embodiment 2

[0025] Dissolve 34.65g tetraethyl orthosilicate in a mixed solution of 20.65g ethylene glycol and 20.00g ethanol, stir and heat to 80°C, add 2gNa 2 CO 3 In the above solution, continue to stir for 30 minutes, turn on the 20kHz probe type ultrasonic, and process continuously. The transducer is a piezoelectric ceramic ultrasonic transducer, and the ultrasonic sound intensity is 1.0W / cm 2 , and then add 60.00 g of ethanol and 15.00 g of distilled water. Keep at 80°C for 8 hours to form a transparent jelly. At this time, turn off the ultrasound and age the jelly at room temperature for 24 hours to obtain the target product as white powder. The specific surface area of ​​this desulfurizer is measured to be 255.46m 2 / g.

Embodiment 3

[0027] Dissolve 34.65g tetraethyl orthosilicate in a mixed solution of 20.65g ethylene glycol and 20.00g ethanol, stir and heat to 80°C, add 2gNa 2 CO 3 In the above solution, continue to stir for 30 minutes, turn on the 40kHz tank ultrasonic, continuous processing, the transducer is a piezoelectric ceramic ultrasonic transducer, and the ultrasonic sound intensity is 6.0W / cm 2 , and then add 60.00 g of ethanol and 15.00 g of distilled water. Keep at 80°C for 8 hours to form a transparent jelly. At this time, turn off the ultrasound and age the jelly at room temperature for 24 hours to obtain the target product as white powder. The specific surface area of ​​this desulfurizer is measured to be 200.18m 2 / g.