Ruthenium-based catalyst activation and regeneration method and application thereof

Abstract

The invention discloses a ruthenium-based catalyst activation and regeneration method and application thereof. The method comprises the steps that S1, putting liquid caustic soda in a first liquid caustic soda storage tank and pumping into a fixed bed reactor till the liquid caustic soda liquid level in the fixed bed reactor is higher than a catalyst bed layer; S2, controlling the liquid caustic soda to stay in the fixed bed reactor for 5 hours, and then discharging the liquid caustic soda containing catalyst attached impurities in the fixed bed reactor; S3, after the liquid caustic soda in the fixed bed reactor is completely discharged, pumping pure water into the fixed bed reactor until the liquid level in the fixed bed reactor is higher than the catalyst bed layer; S4, controlling the pure water to stay in the fixed bed reactor for 60 minutes, and discharging wastewater containing catalyst attached impurities in the fixed bed reactor; S5, repeating the steps, finishing cleaning whenthe pH value of the cleaning water is less than or equal to 8, and pumping the cleaned waste water into a sewage treatment station; the process is reasonable in structural design, high in productionefficiency and suitable for large-scale popularization.

Description

technical field [0001] The invention relates to the technical field of organic wastewater treatment, in particular to a method for activating and regenerating a ruthenium-based catalyst and its application. Background technique [0002] Industrial production has become an important part of driving economic development, but the "three wastes" produced in the industrial production process will also cause very serious environmental problems. Among them, industrial organic wastewater, especially high-concentration organic wastewater that is difficult to biodegrade has become a recognized problem in the environmental field. Especially in recent years, with the development of large-scale and integrated industrial production, the types and discharges of waste water have been increasing, and the pollution of water bodies has become increasingly widespread and serious, seriously threatening human health. [0003] Catalytic hydrothermal gasification technology is a combination of hyd...

AI Technical Summary

Problems solved by technology

The core of catalytic hydrothermal gasification technology is the catalyst. Among many catalysts, ruthenium-based catalysts have good catalytic activity and selectivity, and have advantages in treating wastewater containing heterocyclic organic matter, lipid organic matter, and ether organic matter. Catalyst activity decreased or even deactivated

Activation and regeneration is the simplest and most effective method to solve catalyst deactivation. However, in the prior art, there is no effective way to activate and regenerate ruthenium-based catalysts.

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