The process flow of hydrogen production from natural gas mainly includes purification system, conversion system and purification system. The purification system mainly includes the purification of olefins and sulfur in the feed gas ( due to the sensitivity of the conversion catalyst ). The following natural gas hydrogen production device manufacturer-Suzhou Jiarui gas to introduce the principle of natural gas hydrogen production :
The principle of natural gas hydrogen production process is to pretreat natural gas first, and then convert methane and water vapor into carbon monoxide and hydrogen in the conversion furnace. After waste heat recovery, carbon monoxide is converted into carbon dioxide and hydrogen in the conversion tower. The process is based on the natural gas steam conversion technology. In the conversion tower, in the presence of catalyst, the reaction temperature is controlled, and the carbon monoxide and water in the conversion gas react to form hydrogen and carbon dioxide.
The alkane in natural gas will undergo a series of chemical reactions to generate converted gas under appropriate pressure and temperature. The converted gas will undergo heat exchange, condensation and other processes to make the gas pass through the PAS device equipped with a variety of adsorbents under automatic control. After adsorption, impurities such as carbon monoxide and carbon dioxide are adsorbed by the adsorption tower, and hydrogen is sent to the gas unit to adsorb the adsorbent of the impurity. After desorption, the desorption gas can be sent to the shift furnace as fuel, and the adsorbent is also regenerated.
The main reaction formula is as follows :
Natural gas and water react to form carbon monoxide and hydrogen at 800 ~ 900 °C under the condition of nickel oxide catalyst.
The reaction equation is : CH4 + H2O → CO + H2-Q
Carbon monoxide and water react to form carbon dioxide and hydrogen at 300-400 °C under the condition of iron oxide catalyst.
The reaction equation is : CO + H2O → CO2 + H2 + Q
In addition, the technical requirements related to the preparation process are as follows :
The pressure is generally 1.5 ~ 2.5 MPa, and the unit consumption of natural gas is 0.4 ~ 0.5 m3 / m3 hydrogen. Running time : > 8000h ; industrial scale : 1000 m3 / h ~ 100000 m3 / h.
The above is sorted out and released by Suzhou Jiarui Gas, a manufacturer of natural gas hydrogen production equipment. Suzhou Jiarui Gas System Co., Ltd.is a science and technology company specializing in the research and development of gas separation and purification technology. The company has a science and technology development building, gas separation device assembly plant. Provide users with pressure swing adsorption hydrogen production, nitrogen production, oxygen production, purification or removal of carbon dioxide and other services, looking forward to win-win cooperation with you.
