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Ferric oxide desulfurizer and preparation method thereof

An iron oxide desulfurizer and ferric oxide technology, which is applied in chemical instruments and methods, separation methods, water/sludge/sewage treatment, etc., can solve the problems of long production cycle and complicated preparation process, and improve mechanical strength. Effect

Active Publication Date: 2014-09-24
YUEYANG HAIDA ENVIRONMENTAL PROTECTION TECHCO
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Problems solved by technology

[0005] Based on this, it is necessary to provide a method for preparing an iron oxide desulfurizer with a simple process and a short production cycle in view of the problems of complex preparation process and long production cycle of traditional iron oxide desulfurizers

Method used

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  • Ferric oxide desulfurizer and preparation method thereof

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preparation example Construction

[0025] See figure 1 , The method for preparing an iron oxide desulfurizer in one embodiment includes the following steps:

[0026] Step S110, mixing the solid soluble ferrous salt and the carbonate aqueous solution at 50°C to 75°C, stirring, and rolling, and reacting for 20 to 30 minutes to obtain a reaction mixture.

[0027] Among them, the solid soluble ferrous salt is ferrous sulfate or ferrous chloride. The carbonate is ammonium bicarbonate.

[0028] Preferably, the mass percentage of carbonate in the carbonate aqueous solution is 5% to 15%.

[0029] Preferably, the mass ratio of solid soluble ferrous salt to carbonate is 1:0.2 to 0.4.

[0030] It can be understood that during the aforementioned mixing, stirring, and mixing rolling process, the solid particles in the material are ground, dispersed, mixed and micronized due to the combined forces of shear, friction, impact, and pressure, which is conducive to full reaction.

[0031] Step S120, mixing, stirring, and rolling the above...

Embodiment 1

[0045] At 50°C, 100 kilograms of ferrous sulfate and 400 kilograms of 5% ammonium bicarbonate aqueous solution were mixed, stirred, and mixed, and reacted for 20 minutes to obtain a reaction mixture. At 50° C., the above reaction mixture was mixed with 20 kg of sodium hydroxide, stirred, and rolled, and reacted for 20 minutes to obtain an insoluble iron salt. The above-mentioned insoluble iron salt is extruded into physical vacuum at -0.04MPa, and oxidized and dried naturally at -5°C to obtain an iron oxide desulfurizer.

[0046] After testing, the content of the active component iron trioxide in the iron oxide desulfurizer is 28%, the first sulfur capacity is 25%, the mechanical strength is 65N / cm, the cumulative sulfur capacity is 60%, and the porosity is 50%~60% , The bulk density is 0.70.

Embodiment 2

[0048] At 75°C, 100 kilograms of ferrous chloride and 266 kilograms of 15% ammonium bicarbonate aqueous solution were mixed, stirred, and mixed, and reacted for 30 minutes to obtain a reaction mixture. At 75° C., the above reaction mixture was mixed with 40 kg of calcium hydroxide, stirred, and rolled, and reacted for 30 minutes to obtain an insoluble iron salt. The above-mentioned insoluble iron salt is extruded into a physical vacuum at -0.06MPa, and naturally oxidized and dried at 45°C to obtain an iron oxide desulfurizer.

[0049] After testing, the content of the active component iron trioxide in the iron oxide desulfurizer is 35%, the initial sulfur capacity is 26%, the mechanical strength is 65N / cm, the cumulative sulfur capacity is 60%, and the porosity is 50%~60%. , The bulk density is 0.70.

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Abstract

The invention provides a preparation method of ferric oxide desulfurizer. The preparation method includes the following steps that at the temperature of 50 DEG C to 75 DEG C, solid soluble ferrite and a carbonate compound aqueous solution are mixed, stirred and rolled in a mixing mode and react for 20 minutes to 30 minutes, so that a reaction mixture is obtained; at the temperature of 50 DEG C to 75 DEG C, the reaction mixture and hydroxide are mixed, stirred and rolled in a mixing mode and react for 20 minutes to 30 minutes, so that insoluble ferric salt is obtained; insoluble ferric salt is formed through physical vacuum extrusion, and the ferric oxide desulfurizer is obtained after drying. The invention further provides the ferric oxide desulfurizer. Ferric oxide serves as an active component of the ferric oxide desulfurizer, and the content of the ferric oxide ranges from 28% to 35%. The preparation method of the ferric oxide desulfurizer is simple in process and short in production period, and the prepared ferric oxide desulfurizer is high in sulfur capacity and mechanical strength, capable of saving energy and environmentally friendly.

Description

Technical field [0001] The invention relates to the technical field of desulfurization and purification, in particular to a high-strength, high-sulfur capacity, energy-saving and environmentally friendly iron oxide desulfurizer and a preparation method thereof. Background technique [0002] Sulfides are produced on many occasions in industrial production. For example, in the production process of preparing chemical raw materials from coal or petroleum, and in the waste water or exhaust gas discharged from ordinary industrial production. Among them, in the production process of preparing chemical raw materials from coal or petroleum, the hydrogen sulfide produced is mainly because the raw materials contain more sulfur-containing substances, which makes the sulfur-containing substances react during the production process to release hydrogen sulfide , Which directly leads to the poisoning and deactivation of the catalyst active material in the subsequent production section. In ad...

Claims

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Application Information

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IPC IPC(8): C02F1/58B01D53/74B01D53/52
Inventor 凌绍文刘延玲
Owner YUEYANG HAIDA ENVIRONMENTAL PROTECTION TECHCO
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