A kind of regeneration method of iron oxide desulfurizer
An iron oxide desulfurizer and desulfurizer technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve problems such as air, water environment and water source pollution, high cost of organic solvents, human body and environmental hazards, etc., to achieve High sulfur capacity, strong solvency, time and cost saving effects
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Embodiment 1
[0021] (1) Prepare amorphous iron oxyhydroxide desulfurizers (A) and (B) according to CN101898108A. The properties of the desulfurizer (A) include 97wt% of amorphous iron oxyhydroxide in terms of mass percentage of the desulfurizer, and the balance is sodium sulfate and water, the particle size is 100-200 mesh, and the sulfur capacity is 52%; the properties of the desulfurizer (B) are: based on the mass percentage of the desulfurizer, it contains 88wt% of amorphous iron oxyhydroxide, and the balance is sodium sulfate, water and binder agent, a spherical desulfurizer, with a sulfur capacity of 47%.
[0022] (2) The desulfurization agent (A) carries out the desulfurization reaction, and the H 2 After the S penetrates, discharge the waste desulfurizer for oxidation treatment, oxidation conditions: air atmosphere, 60°C temperature, treatment for 5 hours.
[0023] (3) Add the desulfurizer treated in step (2) to catalytic cracked diesel oil with a distillation range of 240-260°C at...
Embodiment 2
[0025] (1) Take the desulfurizing agent (A) of Example 1 for desulfurization reaction, and wait for H 2 After the S penetrates, discharge the waste desulfurizer for oxidation treatment, oxidation conditions: air atmosphere, 80°C temperature, treatment for 4 hours.
[0026] (2) Add the desulfurizer (sulfur content: 5.8wt%) treated in step (1) to catalytic cracked diesel oil with a distillation range of 260-280°C at 100°C, the mass of desulfurizer (A) and catalytic cracked diesel oil The ratio is 1:50, stirred for 1 hour, filtered to obtain desulfurization liquid and desulfurization agent material, the desulfurization liquid is cooled to 10°C, and elemental sulfur is recovered, the purity of elemental sulfur is 95%, and the desulfurization agent material is dried to obtain a regenerated desulfurization agent (A2) , carry out the sulfur capacity test, the sulfur capacity is 50%.
Embodiment 3
[0028] (1) Take the desulfurizing agent (A) of Example 1 for desulfurization reaction, and wait for H 2 After S penetrates, discharge the spent desulfurizer and add it to catalytic cracked diesel oil with a distillation range of 300-330°C at 120°C. The mass ratio of desulfurizer (A) to catalytic cracked diesel oil is 1:80.
[0029] (2) Air is introduced into the mixture in step (1), stirred for 2 hours, and desulfurized liquid and desulfurized agent materials are obtained by filtration. The desulfurized liquid is cooled to 15°C, and elemental sulfur is recovered. After drying, the regenerated desulfurizer (A3) was obtained, and the sulfur capacity test was carried out, and the sulfur capacity was 48.6%.
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