PSA hydrogen purification

PSA hydrogen purification technology:

PSA is a new gas adsorption separation technology. During the separation process, the gas components are adsorbed at the time of pressure rise and desorbed at the time of pressure drop. Due to their different adsorption and desorption characteristics, different components are separated during the periodic change of pressure, which is called the PSA separation process; Adsorption and desorption are physical processes. PSA technology is widely used in industrial gas separation fields such as H2, CH4, CO, CO2, etc.

Our company can provide according to the specific requirements and production characteristics of users Reasonable technical scheme, process route, selection and proportion of special adsorbents, with * * effective gas yield and index stability.

The control system adopts * * mature control software package, which can automatically optimize the adsorption time. This function can keep the * * device in an economic operating condition for a long time without being affected by the level of operators and the degree of meticulous operation.

The special program control valve for PSA with special technology has a service life of more than 1.5 million times.

Pressure swing adsorption (PSA) process for purifying H2 is to use special adsorbent to easily adsorb high boiling point components, but not low boiling point (H2) components; At room temperature and high pressure, the adsorption capacity increases, while at low pressure, the adsorption capacity decreases. The cycle of adsorption and regeneration is achieved by using the change of pressure; The adsorption process is that the adsorbent adsorbs some components in the mixed gas under pressure, and the unadsorbed component (H2) flows out through the adsorber layer. When the adsorbent is saturated with strong adsorption components, the adsorption tower needs to enter the regeneration process, that is, the desorption or desorption process.

In the PSA process, the adsorbent desorption in the adsorber is achieved by reducing the partial pressure of impurities. The methods that can be used in industrial plants are:

1) Reduce adsorber pressure (relief)

2) Vacuum the adsorber

3) Rinse with product components

Technical features:

·The purity of CO2 can reach 98~99.999%, which is easy to adjust;

·Mature technology * *, strong adaptability and degree of automation;

·The process flow is simple, the operation is flexible, and the startup and shutdown are convenient;