Hydrogen from coal

I. Technical Principle 

Hydrogen production from coal is also known as hydrogen (H2) production from coal gasification, including coal gas from coal steam, desulfurization process, gas conversion, purification of hydrogen through pressure swing adsorption (PSA), gasification recycling water. Coal or coke reacts with water vapor at high temperature to produce gas mainly containing hydrogen (H2), carbon monoxide (CO) and carbon dioxide (CO2). The gas is then mixed with water vapor after cooling, dust removal and desulfurization, and sets off a shift reaction. Most carbon monoxide is converted into hydrogen (H2) and carbon dioxide (CO2), and then shift gas. The shift gas is purified into hydrogen gas (H2 with a high purity through a pressure swing adsorption (PSA).

II. Technical Indicators 

Hydrogen scale: 2000m3/h or more

Hydrogen purity: 99~99.999%

Hydrogen pressure: 0.5~3.5MPa

III. Technical Characteristics 

1. Water vapor can achieve its own balance by making use of the advanced heat recovery technology;

2. Successful application of “three waste boiler” completely solves the problem of waste disposal;

3. Hydrogen production cost is the lowest;

4. Suitable for large-scale hydrogen production.