Using chelated iron ions as catalysts and alkaline solutions as absorbers, the goal of hydrogen sulfide removal is achieved. The principle of chemical reaction is divided into two parts: desulfurization absorption process and regeneration process.
1、吸收氧化总反应方程式：
1. The total reaction equation for absorption oxidation:
H2S(g)+2Fe3+(L)→2H+(L)+S↓+2Fe2+(L)
H2S(g)+2Fe3+(L)→2H+(L)+S↓+2Fe2+(L)
2、再生过程：为恢复溶液吸收硫化氢的能力，就必须对溶液进行再生，再生过程主要发生氧化析硫反应：
2. Regeneration process: In order to restore the solution's ability to absorb hydrogen sulfide, it is necessary to regenerate the solution. The regeneration process mainly involves oxidation and sulfur evolution reaction:
1/2O2(g)+H2O(L)+2Fe2+(L)→2OH-(L)+2Fe3+(L)
1/2O2(g)+H2O(L)+2Fe2+(L)→2OH-(L)+2Fe3+(L)
二、设计原则。
2、 Design principles.
1、脱硫设备长期稳定运行，脱硫精度达到或高于设计要求。
1. The desulfurization equipment operates stably and safely for a long time, and the desulfurization accuracy meets or exceeds the design requirements.
2、脱硫设备阻力在长期运行过程中保持稳定。
2. The resistance of desulfurization equipment remains stable during long-term operation.
3、脱硫设备的操作方便性与后期维护的便捷性。
3. The ease of operation and maintenance of desulfurization equipment.
4、综合考虑投资费用和运行费用，充分考虑业主投入与产出比。
4. Taking into account both investment and operating costs, fully considering the owner's input-output ratio.
三、技术特点。
3、 Technical characteristics.
1、药剂硫容高。
1. The reagent has a high sulfur capacity.
2、脱硫精度高，可用于硫化氢含量高的工况。
2. High desulfurization accuracy, suitable for working conditions with high hydrogen sulfide content.
3、药剂的吸收反应速度快，只要传质效率高，可瞬间反应脱除硫化氢。
3. The absorption reaction speed of the agent is fast, and as long as the mass transfer efficiency is high, hydrogen sulfide can be instantly removed through reaction.
4、药剂的性能决定了工业化脱硫设备可以做到小型撬装化，安装使用方便。
4. The performance of the agent determines that industrial desulfurization equipment can achieve small scale and easy installation and use.
5、环境友好，没有副盐产生，没有污水产生，符合环保产业政策。
5. Environmentally friendly, without the generation of by-products or sewage, in line with national environmental protection industry policies.
6. The reaction conditions are broad, and desulfurization can be carried out at room temperature and pressure. It can also be carried out at temperatures ranging from 50 to 60 ℃ without generating secondary salts, and can also be carried out at a certain pressure.
7、操作弹性大，原料气的硫化氢含量可以在一定范围内波动变化。
7. The operation flexibility is large, and the hydrogen sulfide content of the feed gas can fluctuate within a certain range.
8. It has a wide range of applications and is suitable for the removal of hydrogen sulfide gas, including natural gas, petroleum associated gas, biogas, various industrial exhaust gases containing hydrogen sulfide, and industrial tail gas.
9. The operating environment is good, and the reagent does not contain any toxic chemicals. Hydrogen sulfide is directly converted into sulfur, which can be recycled as a raw material for producing sulfuric acid.
10、运行可靠，特殊的防堵设计可以使脱硫装置不堵塞，长周期运行。
10. Reliable operation, special anti blocking design can ensure that the desulfurization device is not blocked and operates for a long period of time.
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2023-05-08
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