Current Location： Home > News > Chemical Knowledge > Manufacturing method and process of industrial gas

[Chemical Knowledge]：Manufacturing method and process of industrial gas

Read： 821 Time：20months ago Source：Transform the World with Simplicity

In the field of raw materials for chemical production, industrial gases are produced in a variety of ways, depending on the type and characteristics of the desired gas. This article will focus on several common industrial gas manufacturing methods.

1. Oxygen manufacturing method

Oxygen is a common industrial gas, which is widely used in metallurgy, chemical industry, medical treatment and other fields. The production method of oxygen mainly includes air separation method and electrolytic water method.

(1) Air separation method

air separation method is to compress, cool and liquefy air, and then use the difference in boiling point between different gases to separate oxygen from other gases. This method has large yield and low cost, and is the main method for industrial production of oxygen.

(2) Electrolytic water method

Electrolytic water method is to decompose hydrogen and oxygen by electrolysis of water. The oxygen produced by this method has high purity, but the energy consumption is large and the cost is high.

2. nitrogen manufacturing method

nitrogen is widely used in chemical industry, metallurgy, electronics and other fields. The production method of nitrogen gas mainly includes an air separation method and a synthetic ammonia method.

(1) Air Separation

Similar to oxygen production, nitrogen can also be obtained by air separation. In the process of liquefying air, nitrogen is liquefied before oxygen, so as to realize the separation of nitrogen and oxygen.

(2) Ammonia Synthesis Process
The
ammonia synthesis process generates ammonia by catalytically reacting nitrogen and hydrogen at high temperature and high pressure. Then, the ammonia gas is subjected to a decomposition reaction to obtain nitrogen and hydrogen. This method can obtain high purity nitrogen, but the energy consumption is large.

3. hydrogen production method

hydrogen plays an important role in chemical industry, metallurgy, energy and other fields. Hydrogen is mainly produced by a water electrolysis method, a hydrocarbon steam reforming method, a partial oxidation method, and the like.

(1) Hydrolysis

Hydrolysis is the production of hydrogen and oxygen by electrolysis of water. This method produces hydrogen of high purity, but consumes more energy.

(2) Hydrocarbon Steam Reforming Method

The hydrocarbon steam reforming method produces hydrogen and carbon dioxide by catalytically reacting hydrocarbons with steam at a high temperature. The carbon dioxide is then converted to carbon monoxide by a shift reaction and reacted with steam to yield more hydrogen. This method has large yield and low cost, and is the main method for industrial production of hydrogen.

(3) Partial Oxidation Method
The
partial oxidation method is a method in which a hydrocarbon is partially oxidized with oxygen at a high temperature to produce hydrogen and carbon monoxide. This method is suitable for feedstocks with low hydrocarbon content, and the hydrogen purity in the product is relatively high.

4. carbon dioxide manufacturing method

carbon dioxide is widely used in chemical industry, food, medicine and other fields. The production methods of carbon dioxide are mainly limestone calcination method, hydrocarbon oxidation method and fermentation method.

(1) limestone calcination method

limestone calcination method is to decompose calcium oxide and carbon dioxide by calcining limestone at high temperature. This method has large yield and low cost, and is the main method for industrial production of carbon dioxide.

(2) Hydrocarbon Oxidation Method
The
hydrocarbon oxidation method is a method in which a hydrocarbon is subjected to an oxidation reaction with oxygen at a high temperature to produce carbon dioxide and water. This method is suitable for low hydrocarbon content feedstocks, and the purity of carbon dioxide in the product is relatively high.

(3) fermentation method

fermentation method is through microbial fermentation of sugars to produce carbon dioxide and organic acids and other products. This method is suitable for producing low concentrations of carbon dioxide.

In short, different industrial gases have different manufacturing methods, and it is important to select the appropriate manufacturing method according to the type and characteristics of the required gas. At the same time, with the continuous progress and innovation of science and technology, the manufacturing method of industrial gas will continue to improve and optimize, improve the purity of gas, yield and reduce costs, and provide more support and guarantee for the development of chemical production raw materials.

Previous： Production and manufacturing methods and process flow of coal chemical industry

Next： Production and manufacturing method and process flow of phenol ketone

News Categories