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[Chemical Knowledge]：Production and manufacturing method and process of compressed hydrogen

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The manufacturing method
of compressed hydrogen
1. Introduction

hydrogen is a colorless, odorless, non-toxic gas with high reactivity, so it has a wide range of applications in the field of chemical production raw materials. As an important industrial gas, compressed hydrogen is widely used in the production of synthetic ammonia, methanol and other chemical products, and also plays an important role in energy, metallurgy, electronics and other fields. This article will introduce the production methods of compressed hydrogen, including electrolytic water method, natural gas reforming method, coal hydrogen production method, etc.

2. water electrolysis

water electrolysis is a commonly used method for producing hydrogen, the principle is to split water into hydrogen and oxygen by electrolysis. This method has the advantages of high purity and no pollution, but high energy consumption, so it is necessary to consider the cost and benefit in actual production. The process flow of the

water electrolysis method is as follows: first, water is added into an electrolytic cell, and the water is split into hydrogen and oxygen by electrification; then, the hydrogen and oxygen are separated by a separation device and collected and stored separately. The purity of hydrogen produced by water electrolysis is high, which can reach more than 99.99%.

3. natural gas reforming method

natural gas reforming method is a commonly used method for producing hydrogen. Its principle is to react natural gas with water vapor under high temperature and high pressure to produce a mixture of hydrogen and carbon dioxide. This method has the advantages of high yield and low cost, but the carbon dioxide produced needs to be treated to avoid environmental pollution. The process flow of

natural gas reforming method is as follows: first, natural gas and steam are mixed and introduced into a reactor, and the reaction is carried out under high temperature and high pressure conditions; then, the generated mixture of hydrogen and carbon dioxide is separated by a separation device to obtain hydrogen with higher purity. The purity of hydrogen produced by the natural gas reforming method is generally above 90%.

4. Coal hydrogen production method

Coal hydrogen production method is a commonly used method for producing hydrogen. Its principle is to react coal with water vapor under high temperature and high pressure to produce a mixture of hydrogen and carbon monoxide. This method has the advantages of wide source of raw materials and low cost, but the waste gas produced needs to be treated to avoid environmental pollution. The process flow of the

coal hydrogen production method is as follows: First, coal is pulverized and mixed with water vapor and introduced into a reactor, and the reaction is carried out under high temperature and high pressure conditions; then, the generated mixture of hydrogen and carbon monoxide is separated by a separation device to obtain hydrogen with higher purity. The purity of hydrogen from coal to hydrogen is generally above 70%.

5. other methods to

In addition to the above methods, there are some other methods to produce hydrogen, such as biomass gasification, solar photolysis, etc. These methods have their own advantages and disadvantages, and need to be selected according to the actual situation.

6. Conclusion There are many methods for the production of

compressed hydrogen, including water electrolysis, natural gas reforming, and coal hydrogen production. Different methods have different advantages and disadvantages and scope of application, and need to be selected according to the actual situation. In actual production, it is necessary to comprehensively consider factors such as cost, benefit and environment to choose the most suitable manufacturing method. At the same time, with the continuous progress and application of technology, more efficient and environmentally friendly manufacturing methods may appear in the future.

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