Principle of Hydrogen Production from Natural Gas in Natural Gas Hydrogen Production Units
2020.12.22
As a manufacturer of natural gas hydrogen production units, Suzhou Jiarui Gas explains the principle of hydrogen production from natural gas in detail:
In the shift converter, under the action of a catalyst and with controlled reaction temperature, carbon monoxide in the reformed gas reacts with water to produce hydrogen and carbon dioxide.
Under appropriate pressure and temperature, alkanes in natural gas undergo a series of chemical reactions to form reformed gas. After heat exchange, condensation and other processes, the gas automatically passes through a PSA unit filled with various adsorbents. Impurities such as carbon monoxide and carbon dioxide are adsorbed by the adsorption tower, while hydrogen is sent to gas-consuming units. The adsorbent loaded with impurities is regenerated through desorption, and the desorbed gas can be sent to the reformer as fuel.
The main reaction equations are:
Natural gas reacts with water at 800~900 °C under nickel oxide catalyst to produce carbon monoxide and hydrogen.
Reaction equation: CH₄ + H₂O → CO + 3H₂ − Q
Carbon monoxide reacts with water at 300~400 °C under iron(III) oxide catalyst to produce carbon dioxide and hydrogen.
Reaction equation: CO + H₂O → CO₂ + H₂ + Q
In addition, the relevant technical indicators during production are as follows:
Operating pressure: 1.5~2.5 MPa
Natural gas consumption: 0.4~0.5 m³ per m³ of hydrogen
Operating time: >8000 hours per year
Industrial capacity: 1000 m³/h ~ 100000 m³/h
The above content is compiled and released by Suzhou Jiarui Gas System Co., Ltd., a professional manufacturer of natural gas hydrogen production units.
Suzhou Jiarui Gas System Co., Ltd. is a high-tech enterprise specializing in the research and development of gas separation and purification technologies. All technologies have reached advanced domestic levels. Both product quality and after-sales service have been highly praised by users. We look forward to cooperating with you.