Method for removing hydrogen sulfide and carbonyl sulfide in gas
A technology for removing gas and hydrogen sulfide, applied in chemical instruments and methods, separation methods, and separation of dispersed particles, etc., can solve problems such as pipelines, equipment corrosion, catalyst poisoning, environmental problems, etc., achieve high removal efficiency and improve efficiency , the effect of large operating flexibility
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[0016] Example 1: Using the heterocyclic amine-containing complex iron solution of the present invention to remove hydrogen sulfide and carbonyl sulfide in the gas, the gas enters the absorption tower from bottom to top, and the desulfurization liquid passes through the distributor and interacts from top to bottom. The sulfur-containing gas is in countercurrent contact, and the desulfurized gas is analyzed by the analyzer for the content of hydrogen sulfide and carbonyl sulfide in the gas, and the solution absorbing the sulfide enters the oxidation regeneration tower, and the sulfur is recovered by oxidation regeneration. The test gas is natural gas added with a certain amount of hydrogen sulfide and carbonyl sulfide.
[0017] (2) Test conditions
[0018] The concentration of hydrogen sulfide prepared with natural gas is 10.2 g / Nm 3 , Carbonyl sulfide 205m g / ·Nm 3 , The test gas.
[0019] Test gas flow rate: 1 Nm 3 / hour
[0020] Gas pressure: 1Mpa
[0021] Liquid flow rate: 20 li...
Example Embodiment
[0028] Example 2: The test method is the same as Example 1
[0029] (2) Test conditions
[0030] The concentration of hydrogen sulfide prepared with natural gas is 10.7 g / Nm 3 , Carbonyl sulfide 255m g / ·Nm 3 , The test gas.
[0031] Test gas flow rate: 1 Nm 3 / hour
[0032] Gas pressure: 1Mpa
[0033] Liquid flow rate: 22 liters / hour
[0034] Absorption and regeneration temperature: ~40 o C
[0035] 1.2-Dimethylimidazole content: 5g / l
[0036] 1.4-Diazobicyclooctane content 5g / l
[0037] Iron concentration of complexed iron solution 2.8 g / L
[0038] PH value of the solution 8.5
[0039] (3) Desulfurization effect
[0040] Under the above test conditions, the average content of hydrogen sulfide in the purified gas during the 72-hour absorption process of continuous ventilation is 4mg· / Nm 3 , Carbonyl sulfide 36m g / ·Nm 3 .
Example Embodiment
[0041] Example 3: The test method is the same as Example 1
[0042] (2) Test conditions
[0043] The concentration of hydrogen sulfide prepared with natural gas is 12.8 g / Nm 3 , Carbonyl sulfide 675m g / ·Nm 3 , Ethyl mercaptan 465m g / ·Nm 3 Of test gas.
[0044] Test gas flow rate: 1 Nm 3 / hour
[0045] Gas pressure: 1Mpa
[0046] Liquid flow rate: 22 liters / hour
[0047] Absorption and regeneration temperature: ~40 o C
[0048] 1.4-Dimethylpiperazine content: 5g / l
[0049] 1.2-Dimethylimidazole content: 10g / l
[0050] Iron concentration of complexed iron solution 2.8 g / L
[0051] PH value of the solution 8.5
[0052] (3) Desulfurization effect
[0053] Under the above test conditions, the average content of hydrogen sulfide in the purified gas during the 72-hour absorption process of continuous ventilation is 7mg· / Nm 3 , Carbonyl sulfide 134m g / ·Nm 3 .
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