With the increasing attention of Huanqiu to energy conservation and renewable energy, hydrogen, as a clean, efficient, and renewable energy source, its recovery and purification technology has been widely applied and deeply studied at home and abroad. Hydrogen purification is a prerequisite and foundation for the large-scale application of hydrogen, and also an important link in promoting the development of the hydrogen energy industry. This article will explore the economic benefits and energy-saving significance of hydrogen recovery and purification.

1、 Basic Principles and Technologies of Hydrogen Recovery and Purification

1. Properties of hydrogen gas

Hydrogen is a colorless, odorless, and non-toxic gas with a molecular weight of 2.0157 and a density of 0.0899g/L. Hydrogen is in a gaseous state at room temperature and pressure, with a critical temperature of -240 ℃. It can be liquefied into liquid hydrogen under ultra-high pressure. Hydrogen has relatively active chemical properties and high energy density, which can form compounds with other elements.

2. The principle of hydrogen recovery and purification

The recovery and purification of hydrogen gas is mainly based on the differences in physical or chemical properties of different gas components on adsorbents or membrane materials. Impurities are removed through steps such as separation, adsorption, and purification to obtain high-purity hydrogen gas. The commonly used methods for hydrogen recovery and purification include low-temperature distillation, pressure swing adsorption, membrane separation, etc.

3. Technology for hydrogen recovery and purification

(1) Low temperature distillation: Low temperature distillation is the use of different gas components with different boiling points at low temperatures. By reducing temperature and increasing pressure, different gas components are separated in different temperature regions. Low temperature distillation technology can obtain high-purity hydrogen gas, but the equipment cost is high and the operation is complex.

(2) Pressure swing adsorption: Pressure swing adsorption is the use of the physical properties of an adsorbent to distinguish hydrogen from other gases. Under high pressure, the adsorbent can adsorb hydrogen and other gases, and under low pressure, only hydrogen gas will be desorbed. The pressure swing adsorption technology has the advantages of simple equipment, convenient operation, and low energy consumption, and is widely used.

(3) Membrane separation: Membrane separation is the use of the physical properties of membrane materials to separate helium from other gases. Membrane materials have molecular size selectivity, allowing helium molecules to pass through while blocking other larger molecules. Membrane separation technology has the advantages of simple equipment, convenient operation, and low energy consumption, making it suitable for on-site hydrogen production.

2、 Economic benefits of hydrogen recovery and purification

1. Reducing energy costs: The preparation cost of high-purity hydrogen is relatively high, and through recovery and purification technology, the originally abandoned hydrogen resources can be reused, reducing the energy costs of enterprises.

2. Enhance industrial development: With the continuous development of the hydrogen energy industry, the demand for hydrogen continues to increase. The progress of hydrogen recovery and purification technology can drive the development of the hydrogen energy industry and promote the improvement and upgrading of the industrial chain.

3. Improving enterprise competitiveness: Through hydrogen recovery and purification technology, enterprises can reduce energy costs, improve production efficiency, and also produce higher quality products, enhancing their market competitiveness.

3、 The energy-saving significance of hydrogen recovery and purification

1. Reducing pollution emissions: The recovery and purification process of hydrogen does not produce pollutants, which can reduce the pollution emissions of enterprises and is beneficial for environmental protection.

2. Promoting the development of clean energy: Hydrogen, as a clean energy source, can replace traditional fossil fuels, reduce greenhouse gas emissions, and promote the development of clean energy.

3. Improving energy efficiency: Through hydrogen recovery and purification technology, previously abandoned hydrogen resources can be reused, improving energy efficiency and reducing energy waste.

4、 Conclusion

Hydrogen recovery and purification technology not only brings economic benefits to enterprises, but also has significant energy-saving significance. With the continuous progress of technology and the continuous promotion of applications, hydrogen recovery and purification technology will be more widely applied and promoted. Meanwhile, with the increasing emphasis on energy conservation and sustainable development by Huanqiu, hydrogen energy, as a clean, efficient, and renewable energy source, will play an increasingly important role in the future energy structure.