System and method for producing hydrogen by directly electrolyzing urea-containing wastewater with renewable energy

Abstract

The invention discloses a system and method for producing hydrogen by directly electrolyzing urea-containing wastewater with renewable energy. The system comprises a renewable energy generation module, a power conditioning module, a urea-containing wastewater pretreatment module, an alkaline urea electrolytic hydrogen production module, a gas / liquid separation, drying and purifying module, an alkaline liquor circulating pump, a hydrogen storage tank and an anode product storage module, wherein an output end of the renewable energy generation module is connected with an input end of the power conditioning module, and an output end of the power conditioning module is connected with the alkaline urea electrolytic hydrogen production module. By means of the system, nearby in-time consumption of renewable energy power is facilitated, the hydrogen production cost is r educed, the tolerance of the hydrogen production system to the volatility and intermittence of a power supply is improved, a hydrogen production technology is combined with a water treatment technology, and while the hydrogen production energy consumption is reduced, environmental pollution is avoided; the applicability of the system is wide, the stability is high, the hydrogen produced by the system is high in purity, the process is simple, and industrial production is facilitated.

Description

technical field [0001] The invention relates to the technical fields of new energy and water treatment, in particular to a system and method for hydrogen production by direct electrolysis of urea-containing wastewater from renewable energy. Background technique [0002] With the continuous expansion of the scale of global renewable energy development and utilization, the development of renewable energy has become an important way for my country to promote energy transformation and address climate change. In recent years, the wind power and photovoltaic industries have ushered in rapid development. However, limited by the fluctuation of power supply, the phenomena of abandoned wind and light are very serious. The contradiction of unbalanced development of clean energy has become increasingly prominent, especially the problem of clean energy consumption, which has seriously restricted the healthy and sustainable development of the power industry. Under the current situation,...

AI Technical Summary

Problems solved by technology

In addition, in the process of industrial urea synthesis, the urea in the wastewater is extremely rich. If it is not treated, it will pollute the groundwater and directly threaten human health.

Images