Absorbing agent for catching or separating carbon dioxide
A carbon dioxide and absorbent technology, applied in the direction of absorption, separation method, dispersed particle separation, etc., can solve the problems of high degradation and high cost of use, and achieve the effects of high solubility, reduced energy consumption for desorption, and improved desorption effect.
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Embodiment 1
[0026] Get three parts of N-ethylethanolamine (EMEA) content is 10wt%, sulfolane (TMS) content is 10wt% aqueous solution (i.e. 80% water), the temperature is 40 ℃, gas phase CO 2 Partial pressure of 10kPa, 45kPa, 100kPa containing CO 2 and N 2 The mixed gas of the mixed gas is input into three parts of the solvent respectively, and after the gas-liquid two-phase reaches equilibrium, the CO in the solvent is absorbed 2 The molar ratio of N-ethylethanolamine and CO in the absorption solvent 2 See Table 1 for the solubility.
[0027] Table 1 Experimental results of aqueous solution of 10wt% N-ethylethanolamine+10wt% sulfolane at 40°C
[0028]
Embodiment 2
[0030] Get three parts of N-ethylethanolamine content is 10wt%, sulfolane content is 10wt% aqueous solution (i.e. 80% water), the temperature is 120 ℃, gas phase CO 2 Partial pressure of 20kPa, 60kPa, 100kPa containing CO 2 and N 2 The mixed gas of the mixed gas is input into three parts of the solvent respectively, and after the gas-liquid two-phase reaches equilibrium, the CO in the solvent is absorbed 2 The molar ratio of N-ethylethanolamine and CO in the absorption solvent 2 See Table 2 for the solubility.
[0031] Table 2 Experimental results of 120°C, 10wt% N-ethylethanolamine+10wt% sulfolane aqueous solution
[0032]
Embodiment 3
[0034] Get three parts of N-ethylethanolamine content and be 22wt% and sulfolane content be the aqueous solution (that is 48% water) of 30wt%, the temperature is 40 ℃, gas phase CO 2 Partial pressure of 8.6kPa, 18kPa, 63kPa containing CO 2 and N 2 The mixed gas of the mixed gas is input into three parts of the solvent respectively, and after the gas-liquid two-phase reaches equilibrium, the CO in the solvent is absorbed 2 The molar ratio of N-ethylethanolamine and CO in the absorption solvent 2 See Table 3 for the solubility.
[0035] Table 3 Experimental results of 40°C, 22wt% N-ethylethanolamine+30wt% sulfolane aqueous solution
[0036]
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