A method for reactive desulfurization of hydrogen sulfide and sulfur dioxide
A technology of sulfur dioxide and hydrogen sulfide, applied in chemical instruments and methods, separation methods, sulfur compounds, etc., can solve the problems of harsh reaction conditions, low purity of solid sulfur products, and difficulty in refining, and achieve mild reaction conditions and simple equipment and easy processing. , the effect of low investment
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Embodiment 1
[0039] The reaction solution is prepared by using benzylamine and deionized water, the mass fraction of benzylamine in the solution is 30%, and the mixture is uniformly placed in the reactor. SO at room temperature 2 The gas is passed into the reactor with a flow rate of 300mL / min. After the pH value of the solution in the reactor becomes acidic, H 2 S gas, H 2 The flow rate of S gas is 600mL / min, it can be seen that the liquid in the reactor turns yellow quickly, and the time is about 6s, indicating that the H 2 S and SO 2 The reaction time is short. Sodium hydroxide lye is used as the tail gas absorbent to absorb the unreacted impurity gas, and the tail gas is emptied. After completion of the reaction, get the reaction solution in the reactor to filter and reclaim sulfur, dry and weigh, calculate according to material balance, H 2 The conversion rate of S was 92.4%.
Embodiment 2
[0041] The reaction solution was prepared by using benzylamine and deionized water, the mass fraction of benzylamine in the solution was 20%, and the reaction solution was mixed uniformly and placed in the reactor. SO at room temperature 2 The gas is passed into the reactor with a flow rate of 300mL / min. After the pH value of the solution in the reactor becomes acidic, H 2 S gas, H 2 The flow rate of S gas is 600mL / min, it can be seen that the liquid in the reactor turns yellow quickly, and the time is about 6s, indicating that the H 2 S and SO 2 The reaction time is short. Sodium hydroxide lye is used as the tail gas absorbent to absorb the unreacted impurity gas, and the tail gas is emptied. After completion of the reaction, get the reaction solution in the reactor to filter and reclaim sulfur, dry and weigh, calculate according to material balance, H 2 The conversion rate of S was 91.8%.
Embodiment 3
[0043] The reaction solution was prepared by using isopropanolamine and deionized water, the mass fraction of isopropanolamine in the solution was 20%, mixed evenly and placed in the reactor. SO at room temperature 2 The gas is passed into the reactor with a flow rate of 300mL / min. After the pH value of the solution in the reactor becomes acidic, H 2 S gas, H 2 The flow rate of S gas is 600mL / min, it can be seen that the liquid in the reactor turns yellow quickly, and the time is about 5s, indicating that the H 2 S and SO 2 The reaction time is short. Sodium hydroxide lye is used as the tail gas absorbent to absorb the unreacted impurity gas, and the tail gas is emptied. After completion of the reaction, get the reaction solution in the reactor to filter and reclaim sulfur, dry and weigh, calculate according to material balance, H 2 The conversion rate of S was 95.7%.
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