Hydrogen Production Process of Natural Gas Hydrogen Production Unit
2020.12.08
As a manufacturer of natural gas hydrogen production units, Suzhou Jiarui Gas hereby introduces the hydrogen production process of natural gas hydrogen production units:
First is the feed gas pretreatment step, which mainly refers to desulfurization of the feed gas. In actual process operation, cobalt-molybdenum hydrogenation combined with zinc oxide is generally used as a desulfurizing agent to convert organic sulfur in natural gas into inorganic sulfur and then remove it.
Since the flow rate of the feed natural gas to be treated is relatively large, a high-pressure natural gas source can be adopted, or sufficient margin should be considered when selecting the natural gas compressor.
Next is the natural gas steam reforming step. In the reformer, a nickel-based catalyst is used to convert alkanes in natural gas into feed gas mainly composed of carbon monoxide and hydrogen.
Then comes carbon monoxide shift conversion. Under the action of a catalyst, carbon monoxide reacts with steam to produce hydrogen and carbon dioxide, forming shift gas mainly containing hydrogen and carbon dioxide.
According to different shift temperatures, carbon monoxide shift processes can be divided into two types: medium-temperature shift and high-temperature shift. The temperature for high-temperature shift is about 360°C, and that for medium-temperature shift is about 320°C.
With technological development, a two-stage process combining high-temperature shift and low-temperature shift has been adopted in recent years to further reduce resource consumption. However, if the carbon monoxide content in the reformed gas is low, only medium-temperature shift can be used.
The final step is hydrogen purification. Currently, the most commonly used hydrogen purification system is the PSA system, also known as Pressure Swing Adsorption purification and separation system. This system features low energy consumption, simple flow, and high hydrogen purity, which can reach up to 99.99%.
The above information is compiled and released by Suzhou Jiarui Gas, a 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.
The company is equipped with a R&D building and a gas separation equipment assembly workshop.
It provides customers with services including PSA hydrogen, nitrogen and oxygen production, as well as carbon dioxide purification and removal. We look forward to win-win cooperation with you.