Bimetallic FMG desulfurizer for wet oxidation desulfurization

Abstract

A bimetallic FMG desulfurizer for wet oxidation desulfurization is prepared from the following raw materials in parts by weight: ferrous salt, manganese salt, an organic complexing agent, metal corrole, anthraquinone-2,7-disulfonic acid, polyethylene glycol, an absorbent, a stabilizer, a settling agent, a corrosion inhibitor and a proper amount of water. Bimetal manganese, iron ions and the like are adopted as central ions, a metal corrole complex, anthraquinone-2,7-disulfonic acid, an organic complexing agent and the like are adopted as ligands, inner and outer layer coordination is combined with a supergravity technology through weak interaction to form a supramolecular complex, hydrogen and oxygen in the inner and outer layers form hydrogen bonds, the working sulfur capacity is high, the performance of the desulfurizing agent is stable, and oxidation regeneration is good. Moreover, the desulfurization efficiency is high, the catalytic reaction selectivity is good, secondary salt is not accumulated, and thiosulfate is not generated. In addition, the utilization rate of oxygen in the regeneration process can be increased, the air consumption is reduced, the regeneration rate is increased, the energy consumption of a fan in the regeneration process is reduced, and the cost is low.

Description

technical field [0001] The invention relates to the field of desulfurization of coking wastewater and waste liquid, in particular to a bimetallic FMG desulfurizer for wet oxidation desulfurization. Background technique [0002] HPF desulfurization involves not only the heat and mass transfer process between the gas-liquid phase and the liquid phase, but also the catalytic reaction process with a catalytic process, which makes the equipment scale-up design very complicated; although the PDS desulfurization technology is theoretically The minimum addition amount can be obtained, but the optimal addition amount remains to be further studied. In addition to the optimal amount of addition, there are also problems of low sulfur capacity, and there are many side reactions in PDS desulfurization. [0003] In the prior art, there is research on complex iron desulfurization agents: porphyrin, heme, etc. are used as iron chelating agents in the desulfurization liquid of the DDS desulf...

AI Technical Summary

Problems solved by technology

However, the desulfurization rate of the complex iron desulfurizer is relatively high, and the consumption of reagents is large, resulting in high desulfurization costs

[0004] The SulFerox process developed by Shell and Dow Chemical Company, and the Sulfint process jointly developed by Vienna Technical University and Austrian United Engineering Company use HTA iron chelating agent as the main component of desulfurization liquid. If it is used for desulfurization in the coking industry, its stability is poor and it is easy to cause tower plugging

[0005] In the existing patent, a complex iron desulfurization agent for petroleum liquefied gas desulfurization and its preparation method are disclosed (Patent No. 2017101743823). Its components include water-soluble ferrous salt, inorganic base, water-soluble manganese salt, organic Complexing agent and water, etc., if they are directly used to remove sulfur in gas, problems such as tower blockage and low degradation rate of complexes are prone to occur

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