Condensate water recycling method based on water electrolysis hydrogen production equipment

Abstract

The invention discloses a condensate water recycling and reusing method based on water electrolysis hydrogen production equipment, and relates to the field of water electrolysis hydrogen production, and the condensate water recycling and reusing method comprises the following steps: step S10, collecting condensate water, performing centrifugal filtration, and recycling solid particles; s40, the condensate water is discharged after being pressurized through a centrifugal pump, and deoxygenization is conducted through a deaerator; and step S50, injecting the deoxygenated condensate water into a pre-conversion reactor, carrying out deacidification treatment, and recovering the deoxygenated condensate water. According to the present invention, the catalyst in the form of solid particles in the condensate water is preliminarily recovered and then deoxygenized and deacidified, thereby enabling the discharged condensate water to be neutral, and carbonic acid and other organic substances can be decomposed and discharged through the pre-conversion reactor and the internal catalyst without acidifying the surrounding water quality.

Description

technical field [0001] The invention relates to the field of water electrolysis hydrogen production, in particular to a method for recycling condensed water based on water electrolysis hydrogen production equipment. Background technique [0002] The condensed water in the water electrolysis hydrogen production device refers to the liquid water formed by the hydrogen entraining water vapor through the pipeline or through the container during the flow process. "Hydrogen Station Design Specification GB50177" stipulates that in various hydrogen production systems, the condensed water in the equipment and its pipelines should be discharged to the outside through their own dedicated water seals or drainage water seals. [0003] The water in the electrolyzer will be decomposed into one part of hydrogen and 1 / 2 part of oxygen under the action of direct current. The generated hydrogen and oxygen together with the electrolyte are sent to the gas-liquid separation of the auxiliary equi...

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Problems solved by technology

[0004] After electrolysis of water, the formed acidic condensate is usually first steam stripped, then the steam at the top of the stripping tower is directly discharged to the atmosphere, and the condensate at the bottom of the tower is also directly discharged after being boosted by a centrifugal pump. The method is simple and the economic cost is low, but due to the limitation of the process of electrolyzing water, the condensed water will contain more carbon dioxide and some toxic organic substances, which will lead to acidification of the surrounding water, serious air pollution, and serious adverse effects on environmental protection.

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