Treatment method and treatment system for hydrogen sulfide-containing gas
A treatment method and technology for hydrogen sulfide, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of complicated operation and further improvement of desulfurization effect, and achieve simple separation operation, excellent desulfurization effect, and good application prospects. Effect
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[0067] According to a specific preferred embodiment provided by the present invention, the processing method of the hydrogen sulfide-containing gas comprises:
[0068] (1) Pretreating the gas containing hydrogen sulfide, the pretreatment conditions include: the pretreatment temperature is -10°C to 10°C, and the pretreatment pressure is 7-10MPa;
[0069] (2) subjecting the gas mixture obtained in step (1) to hydration reaction, adsorption treatment and absorption treatment, wherein the adsorption treatment is carried out in the presence of a porous adsorption material, and the absorption treatment is carried out in the presence of an absorbent aqueous solution;
[0070] The conditions of the hydration reaction include: the hydration temperature is -10°C to 20°C, preferably -10°C to 10°C, the hydration time is 1-10h, the gas pressure is 5-7MPa, and the volume ratio of the gas phase to the liquid phase is ( 3-10): 1;
[0071] The conditions of the adsorption treatment and the ab...
Embodiment 1
[0106] This embodiment is used to illustrate the processing method and processing system of the present invention.
[0107] (1) introducing hydrogen sulfide gas (its hydrogen sulfide content is as shown in table 1) in the buffer mechanism 1 for pretreatment,
[0108] (2) The hydrogen sulfide-containing gas obtained in step (1) is introduced into the hydration reaction unit 2 to carry out the hydration reaction of hydrogen sulfide, and the volume space velocity of the gas to be treated is 1000 / h;
[0109] The gas product obtained by the hydration reaction is introduced into the adsorption treatment unit 3 for adsorption treatment, and the volume space velocity of the gas to be treated is 2000 / h;
[0110] Then the gas product obtained after adsorption is introduced into the absorption treatment unit 4 for absorption treatment, and the volume space velocity of the gas to be treated is 2000 / h;
[0111] (3) The concentration of hydrogen sulfide gas in the gas product obtained in s...
Embodiment 2-3
[0115] Carry out according to the method for embodiment 1, difference is, adopt the process condition shown in table 1-2, and, when the concentration of hydrogen sulfide gas in the gaseous product that step (2) obtains > 0 μ mol / mol, described gas The product returns to the hydration reaction unit 2 through the three-way solenoid valve 19 and the return pipe I in turn, and the step (2) is repeated until the concentration of hydrogen sulfide gas in the gas product obtained in the step (2)=0 μmol / mol, other Same as Example 1.
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