Production method and concentration monitoring of hydrogen in industry
The earth is very rich in hydrogen. For example, our common water and various hydrogen-containing compounds are rich in hydrogen. So which hydrogen production methods are used in industry?
Hydrogen from coal
In the coking of coal, coke is produced from coal at a high temperature of 900-1000 degrees in isolation from the air, and coke oven gas is produced at the same time. The coke oven gas contains 55%-60% hydrogen. Coal gasification. Coal can react with water vapor or air to produce gaseous compounds under high temperature and normal pressure or under pressure. Different gasification methods will produce different contents of hydrogen.
Hydrogen production from natural gas
Hydrogen production from natural gas is to replace the hydrogen in the water with the carbon in the methane to produce a replacement reaction and provide heat. Most of the hydrogen comes from water and a small part comes from natural gas. Natural gas steam gasification conversion is a more common method of hydrogen production, with high output, low cost and low emission of greenhouse gases.
Hydrogen production by water electrolysis
Hydrogen production by water electrolysis is the most mature method for producing hydrogen. It has a history of more than 80 years. The essence is that electrical energy opens the bond of hydrogen and oxygen to generate hydrogen and oxygen. Hydrogen produced by water electrolysis has high purity but high power consumption.
In addition, there are methods such as partial oxidation of heavy oil to produce hydrogen and separation and recovery of by-product hydrogen. We all know that hydrogen is flammable and explosive. The amount of hydrogen produced in industry is large and the concentration is high. How to achieve reasonable and safe monitoring is a very important issue.
Industrial hydrogen sensor monitors hydrogen concentration
Industrial hydrogen sensor adopts explosion-proof design and is suitable for various dangerous occasions. The instrument outputs various standard signals and can be compatible with various alarm systems, PLC, DCS and other control systems. Fixed combustible gas H2 detectors are widely used in petroleum, chemical industry, metallurgy, fire fighting, coal mine, electric power, shipbuilding, environmental protection, telecommunications, and other industries.