A method of recovering carbon dioxide
A carbon dioxide and collector technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of affecting the utilization effect of carbon dioxide, reducing the absorption rate of carbon dioxide, and the loss of carbon dioxide gas, so as to improve the service life and recovery The effect of increasing the amount of adsorption
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Embodiment 1
[0088] refer to Figure 1-3 , the present application discloses a device for absorbing and concentrating waste gas containing carbon dioxide, the device comprising: a gas separation tower, an opening 10 is arranged at the bottom of the gas separation tower, the opening 10 is arranged at the center of the bottom of the gas separation tower, and a tee is arranged below the opening 10 Valve, one end of the three-way valve is connected to the waste gas storage tank through the waste gas pipeline 30, and the other end is connected to the concentration mechanism, which is used to separate the regeneration gas and carbon dioxide, and concentrate the carbon dioxide; and the top of the gas separation tower is provided with a regeneration gas inlet 12 and Exhaust gas outlet 11, first channel 13 and second channel 14 are arranged successively around the periphery of outlet in the gas separation tower, and carbon dioxide trapping agent is arranged in the first channel 13 and second channel...
Embodiment 2
[0106] This embodiment provides a kind of preparation method of carbon dioxide capture agent, and this preparation method is as follows:
[0107] (1) Weigh N-vinylpyrrolidone, tetravinylsilane and azobisisobutyronitrile respectively and dissolve them in the solvent, stir evenly and pass nitrogen, 50-75°C, react for 2-10 hours to obtain the first prepolymer;
[0108] (2) Weigh the acrylamide-based monomer and dissolve it in the solvent and raise the temperature to 80-90°C, then add acetylenic alcohol and initiator dropwise and polymerize for 1-5 hours to form the second prepolymer;
[0109] (3) Weigh the first prepolymer, raise the temperature to 80-90°C, then add the second prepolymer to polymerize for 3-10 hours, and obtain the carbon dioxide trapping agent after purification and drying.
[0110] Prepare collectors 1#-9# and comparison collectors D1#-D3# according to the above preparation method, and the specific preparation steps are as follows:
[0111] Collector 1#
[01...
Embodiment 3
[0159] According to another aspect of the present application, there is provided a method for recovering carbon dioxide, which is carried out using the device of Example 1, the method comprising the steps of:
[0160] (1) Heat the gas separation tower to 40-80°C, the exhaust gas containing carbon dioxide enters the gas separation tower and contacts with the impurity remover, the first collector and the second collector in sequence for the adsorption of carbon dioxide, the first capture The pressure of the carbon dioxide adsorption agent and the second trapping agent is 0.1-1.0MPa;
[0161] (2) Stop feeding the waste gas, heat the gas separation tower to 110-130°C, feed the regeneration gas into the gas separation tower, and the regeneration gas contacts the second collector and the first collector in turn to desorb carbon dioxide to obtain Mixed gas, the temperature of the mixed gas is lowered to below -10°C to condense the regeneration gas and recover carbon dioxide, and the ...
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