Sulfur granule modifying agent for complexing iron desulphurization liquid and use method thereof

Abstract

The invention provides a sulfur granule modifying agent for complexing iron desulphurization liquid and a use method thereof. The modifying agent is prepared from the following ingredients in percentage by weight: 10 to 30 percent of nonionic surfactants, 0.1 to 0.2 percent of flocculating agents, 5 to 15 percent of wetting agents, 2 to 20ppm of antifoaming agents and the balance of water, wherein the flocculating agents are sodium polystyrene sulfonate, and has the molecular weight being 50 to 200 thousand. A preparation method of the sulfur granule modifying agent comprises the steps of mixing, stirring and dissolving each raw material. In the use process, the materials are added into the complexing iron desulphurization liquid, and the addition is 30 to 100ppm. The sulfur granule modifying agent for complexing iron desulphurization liquid can fast moisturize sulfur; the flocculating effect in the alkaline complexing iron desulphurization liquid is good; the average granule diameter of the sulfur can be increased to a value greater than 120 micrometers from several micrometers; the sulfur can easily settle; the sulfur settling time is reduced; the suspended sulfur content is reduced; a sulfur foam layer in the desulphurization liquid can be eliminated in time; the settling and separation effect of sulfur granules is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen sulfide gas purification, and in particular relates to a sulfur particle modifier used for complexing iron desulfurization liquid. Background technique [0002] Hydrogen sulfide (H 2 S) is a poisonous industrial waste gas. 0.10% hydrogen sulfide in the air will cause poisoning symptoms such as headache and dizziness. If the content is too high, it will endanger the life safety of residents. Direct emission or conversion to sulfur dioxide emission after combustion will pollute the environment. At present, the methods for removing hydrogen sulfide in industry mainly fall into two categories: dry method and wet method. The dry method is to use the reducibility and flammability of hydrogen sulfide to desulfurize or directly burn with solid oxidant or adsorbent. The wet method directly converts hydrogen sulfide into sulfur to avoid secondary pollution. Among them, the characteristics of the liquid ...

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Problems solved by technology

[0004] Although in the prior art, the effect of desulfurization is improved by increasing the particle size of sulfur particles, the improvement effect is not obvious. In the actual production process, there are still problems such as small sulfur particles and easy generation of sulfur plugging.

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