Preparation, use and regeneration methods of green adsorbent for flue gas desulfurization and denitrification
A desulfurization, denitrification, and adsorbent technology, applied in the field of flue gas purification, can solve the problems of enhanced solvent acidity, corrosive equipment, and increased operating costs, and achieve the effects of improved interaction force, high removal efficiency, and good regeneration effect
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[0037] [Example 1]
[0038] At room temperature and pressure, 100mg 1,4-benzenediboronic acid (BDBA), 10mL mesitylene, 10mL 1,4-dioxane and 150mg 2,3,6,7,10,11-hexahydroxytriphenylene were mixed together (HHTP) was added to the tetrafluoroethylene liner and stirred for 10 minutes. Then put the liner with the mixture into the autoclave, seal the autoclave, heat it to 120°C, take out the powder at the bottom of the liner after staying for 72 hours, wash with ethanol and place the washed powder in a vacuum Dry in a drying oven at 60°C. The gray-purple solid powder was finally obtained as covalent organic framework material (COF-5).
[0039] Get 20g of choline chloride and 26mL of oxalic acid according to the mol ratio of choline chloride and oxalic acid 1:2, the temperature is controlled at 25 ° C, and uniformly stirred to obtain choline chloride-oxalic acid deep eutectic solvent ( DES).
[0040] Take 5.00g of covalent organic framework material and 33.3g of choline chloride-...
Example Embodiment
[0041] [Example 2]
[0042] The preparation method of the covalent organic framework material (COF-5) is the same as that in Example 1.
[0043] According to the molar ratio of choline chloride and oxalic acid of 1:3, take 20 g of choline chloride and 39 mL of oxalic acid, control the temperature at 25 ° C, and stir at a constant speed to obtain a choline chloride-oxalic acid deep eutectic solvent (DES).
[0044] The preparation method of the covalent organic covalent framework supported deep eutectic solvent adsorbent (DES@COF-5) is the same as that in Example 1, and the covalent organic covalent framework supported deep eutectic solvent adsorbent B was obtained.
Example Embodiment
[0045] [Example 3]
[0046] The preparation method of the covalent organic framework material (COF-5) is the same as that in Example 1.
[0047] According to the molar ratio of choline chloride to oxalic acid of 1:4, take 20 g of choline chloride and 52 mL of oxalic acid, control the temperature at 25 ° C, and stir at a constant speed to obtain a choline chloride-oxalic acid deep eutectic solvent (DES).
[0048] The preparation method of the covalent organic covalent framework-supported deep eutectic solvent adsorbent (DES@COF-5) is the same as that in Example 1, and the covalent organic covalent framework-supported deep eutectic solvent adsorbent C is obtained.
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