A high-efficiency spherical desulfurizer and its preparation method and application

Abstract

The invention discloses a high-efficiency spherical desulfurizing agent and a preparation method and application of the high-efficiency spherical desulfurizing agent. The high-efficiency spherical desulfurizing agent is prepared from the following raw materials in parts by weight: 60 to 80 parts of amorphous iron oxide hydroxide, 15 to 25 parts of poly ferric sulfate, 20 to 30 parts of basic cupric carbonate, 20 to 30 parts of calcium bicarbonate and 30 to 45 parts of binding agent. The preparation method comprises the following steps of (1) balling after uniformly mixing and kneading the amorphous iron oxide hydroxide, the poly ferric sulfate, the basic cupric carbonate, the calcium bicarbonate and the binding agent, thus obtaining a spherical mixed and kneaded material; (2) washing and filtering the spherical mixed and kneaded material; (3) carrying out drying treatment on the washed spherical mixed and kneaded material, thus obtaining a dried spherical mixed and kneaded material; (4) carrying out roasting treatment on the dried spherical mixed and kneaded material, thus obtaining the spherical desulfurizing agent. The high-efficiency spherical desulfurizing agent disclosed by the invention is high in desulfurizing efficiency, can be easily recycled and reused in a water body, cannot influence the quality of the water body, has a porous structure and can be in sufficient contact with hydrogen sulfide in the water body.

Description

technical field

[0001] The invention belongs to the technical field of desulfurizing agent preparation, and in particular relates to a high-efficiency spherical desulfurizing agent and its preparation method and application. Background technique

[0002] Oil refining, leather processing, fertilizer production and other industries will produce a large amount of sulfur-containing wastewater, which has a strong stench and toxicity. For this reason, many factories have established sulfur-containing wastewater treatment devices. The problem of hydrogen sulfide in oil and gas field water is different from that of factories, and the geographical environment is also quite different. Oil and gas field water is relatively scattered, and the water volume is far less stable than that of factories. Therefore, it is more difficult to treat hydrogen sulfide in oil and gas field water than sulfur-containing wastewater in factories. Especially Hydrogen sulfide in ultra-high sulfur oil and ga...

Examples

Embodiment 1

[0035] Embodiment 1, preparation of efficient spherical desulfurizer:

[0036] One, the preparation of amorphous ferric oxyhydroxide, comprises the steps:

[0037] 1) Weigh the by-product of the titanium dioxide factory and dissolve it in water to prepare a ferrous sulfate solution with a molar concentration of 1.7mol / L; Sulfuric acid, control the mol ratio of described sulfuric acid and ferrous sulfate to be 0.5:1, obtain the ferrous sulfate solution of acidification, provide an acidic environment for next step oxidation; 3) under stirring condition, adopt plunger pump to step (2) ) adding concentration is 30wt% hydrogen peroxide in the ferrous sulfate solution of described acidification, and the pump mouth of described plunger pump stretches below the liquid level and controls the mol ratio of described hydrogen peroxide and ferrous sulfate to be 0.75:1, and control adding Speed ​​is 500mL / h, fully reacts, ferrous sulfate is fully oxidized to ferric sulfate, obtains ferric ...

Embodiment 2

[0053] Embodiment 2, preparation of efficient spherical desulfurizer:

[0054] One, the preparation of amorphous ferric oxyhydroxide, comprises the steps:

[0055] 1) take industrial grade ferrous sulfate heptahydrate and dissolve it in water, and prepare the ferrous sulfate solution that the molar concentration is 1.5mol / L; 2) adding concentration to the ferrous sulfate solution described in step 1) is 27wt % sulfuric acid, control 20 described sulfuric acid and the mol ratio of ferrous sulfate to be 0.6:1, obtain the ferrous sulfate solution of acidification, provide an acidic environment for next step oxidation; 3) under stirring condition, adopt plunger pump to Step 2) adding concentration in the ferrous sulfate solution of described acidification is the hydrogen peroxide of 35wt%, the pump mouth of described plunger pump stretches below the liquid level and controls the molar ratio of described hydrogen peroxide and ferrous sulfate to be 0.85:1, Control adding rate is 40...

Embodiment 3

[0069] Embodiment 3, preparation of high-efficiency spherical desulfurizer:

[0070] One, the preparation of amorphous ferric oxyhydroxide, comprises the steps:

[0071] 1) take technical grade ferrous sulfate heptahydrate and dissolve it in water, and prepare the ferrous sulfate solution that the molar concentration is 1.2mol / L; 2) adding concentration to the ferrous sulfate solution described in step 1) is 27wt % sulfuric acid, control the mol ratio of described sulfuric acid and ferrous sulfate to be 0.5:1, obtain the ferrous sulfate solution of acidifying, provide an acidic environment for next step oxidation; 3) under stirring condition, adopt plunger pump to step 2) adding concentration in the ferrous sulfate solution of described acidification is the hydrogen peroxide of 40wt%, the pump mouth of described plunger pump stretches below the liquid level and controls the mol ratio of described hydrogen peroxide and ferrous sulfate to be 1:1, control Adding speed is 300mL / h...

technical field

[0001] The invention belongs to the technical field of desulfurizing agent preparation, and in particular relates to a high-efficiency spherical desulfurizing agent and its preparation method and application. Background technique

[0002] Oil refining, leather processing, fertilizer production and other industries will produce a large amount of sulfur-containing wastewater, which has a strong stench and toxicity. For this reason, many factories have established sulfur-containing wastewater treatment devices. The problem of hydrogen sulfide in oil and gas field water is different from that of factories, and the geographical environment is also quite different. Oil and gas field water is relatively scattered, and the water volume is far less stable than that of factories. Therefore, it is more difficult to treat hydrogen sulfide in oil and gas field water than sulfur-containing wastewater in factories. Especially Hydrogen sulfide in ultra-high sulfur oil and ga...

Examples

Embodiment 1

[0035] Embodiment 1, preparation of efficient spherical desulfurizer:

[0036] One, the preparation of amorphous ferric oxyhydroxide, comprises the steps:

[0037] 1) Weigh the by-product of the titanium dioxide factory and dissolve it in water to prepare a ferrous sulfate solution with a molar concentration of 1.7mol / L; Sulfuric acid, control the mol ratio of described sulfuric acid and ferrous sulfate to be 0.5:1, obtain the ferrous sulfate solution of acidification, provide an acidic environment for next step oxidation; 3) under stirring condition, adopt plunger pump to step (2) ) adding concentration is 30wt% hydrogen peroxide in the ferrous sulfate solution of described acidification, and the pump mouth of described plunger pump stretches below the liquid level and controls the mol ratio of described hydrogen peroxide and ferrous sulfate to be 0.75:1, and control adding Speed ​​is 500mL / h, fully reacts, ferrous sulfate is fully oxidized to ferric sulfate, obtains ferric ...

Embodiment 2

[0053] Embodiment 2, preparation of efficient spherical desulfurizer:

[0054] One, the preparation of amorphous ferric oxyhydroxide, comprises the steps:

[0055] 1) take industrial grade ferrous sulfate heptahydrate and dissolve it in water, and prepare the ferrous sulfate solution that the molar concentration is 1.5mol / L; 2) adding concentration to the ferrous sulfate solution described in step 1) is 27wt % sulfuric acid, control 20 described sulfuric acid and the mol ratio of ferrous sulfate to be 0.6:1, obtain the ferrous sulfate solution of acidification, provide an acidic environment for next step oxidation; 3) under stirring condition, adopt plunger pump to Step 2) adding concentration in the ferrous sulfate solution of described acidification is the hydrogen peroxide of 35wt%, the pump mouth of described plunger pump stretches below the liquid level and controls the molar ratio of described hydrogen peroxide and ferrous sulfate to be 0.85:1, Control adding rate is 40...

Embodiment 3

[0069] Embodiment 3, preparation of high-efficiency spherical desulfurizer:

[0070] One, the preparation of amorphous ferric oxyhydroxide, comprises the steps:

[0071] 1) take technical grade ferrous sulfate heptahydrate and dissolve it in water, and prepare the ferrous sulfate solution that the molar concentration is 1.2mol / L; 2) adding concentration to the ferrous sulfate solution described in step 1) is 27wt % sulfuric acid, control the mol ratio of described sulfuric acid and ferrous sulfate to be 0.5:1, obtain the ferrous sulfate solution of acidifying, provide an acidic environment for next step oxidation; 3) under stirring condition, adopt plunger pump to step 2) adding concentration in the ferrous sulfate solution of described acidification is the hydrogen peroxide of 40wt%, the pump mouth of described plunger pump stretches below the liquid level and controls the mol ratio of described hydrogen peroxide and ferrous sulfate to be 1:1, control Adding speed is 300mL / h...

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