Composite regeneration device and method for complex iron catalyst for natural gas desulfurization

Abstract

The invention belongs to the field of catalyst preparation, and particularly relates to a composite regenerating device and method of a complexing iron catalyst for natural gas desulphurization. The composite regenerating device of the complexing iron catalyst for natural gas desulphurization comprises an electrolysis power source, an electrochemical anode, an electrochemical cathode, a regenerating reactor and an air inlet pipe. The complexing iron catalyst is contained in the regenerating reactor, the electrochemical anode is connected with the positive electrode of the electrolysis power source, and the electrochemical cathode is connected with the negative electrode of the electrolysis power source. The electrochemical cathode is provided with the air inlet pipe and a plurality of air outlet holes which are evenly distributed in the circumference. According to the composite and efficient regenerating method, the electrochemical oxidation complexing iron catalyst regeneration technology and the air oxidation complexing iron catalyst regeneration technology are compounded, the catalyst can be regenerated rapidly in the liquid phase oxidation-reduction process, catalyst oxidation regenerating efficiency can be improved, a more efficient hydrogen sulfide removing effect can be achieved, energy consumption and agent consumption are lowered in the complexing iron liquid phase oxidoreduction technology, and the device scale is decreased under the same treatment scale.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a composite regeneration device and method for complex iron catalysts for natural gas desulfurization, which are used for preparing complex iron catalysts for natural gas desulfurization. Background technique [0002] H in natural gas 2 S, CO 2 The presence of such acid gases will increase the corrosion of pipelines and equipment, thereby affecting the service life of pipelines. In addition, during the low-temperature separation of natural gas, dry ice may be formed to block pipelines and equipment; it contains more H 2 When the natural gas of S is burned, there will be peculiar smell, and the SO produced by burning 2 Compounds such as sulfur will pollute the environment; in catalytic processing, sulfur-containing hydrocarbons will poison the catalyst. Therefore, the most important task in natural gas pretreatment is the removal of acid gases. [0003] In the ...

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Problems solved by technology

However, due to the relatively slow oxygen dissolution process in the air, it is difficult to achieve the requirement of rapid catalyst regeneration by only relying on air oxidation for the desulfurization process that requires efficient operation.

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