Suzhou Jiaye Large Industrial Pressure Swing Adsorption Nitrogen Generator

Suzhou Jiaye Large Industrial Pressure Swing Adsorption Nitrogen Generator

Suzhou Jiaye Large Industrial Pressure Swing Adsorption Nitrogen GeneratorThis device consists of a compressed air system, a compressed air purification system, a pressure swing adsorption nitrogen production system, and a nitrogen purification system.

1. Compressed air system

a、 The compressed air system consists of a compressor and an air buffer tank, providing the compressed air required for the pressure swing adsorption nitrogen production device. The process requires the system to provide stable output pressure and sufficient gas volume. The air compressor should be selected for reliable operation, simple maintenance, low noise, and no foundation operation.

b、 The air buffer tank mainly serves as a buffer for compressed air, providing stability and storage. In addition, it can collect and remove most of the oil-water condensate entering the compressed air source. The buffer tank is equipped with a pressure gauge, safety valve, and drain outlet.

2. Domestic nitrogen generator compressed air purification system

The compressed air coming out of the buffer tank first enters the 9th stage filter, and then enters the refrigerated dryer. Force the compressed air to cool down, causing water vapor in the air to condense into liquid water and carry dust and oil out of the machine. The refrigerated dryer should be placed in the compressor room. The process flow adopts a freeze dryer to remove oil and water, based on four reasons: firstly, the inlet of the 7th stage air supply pipeline filter has a large liquid load of 2000ppm w/w (dew point<-12 ℃), and without using a freeze dryer, the 7th stage air supply pipeline filter is prone to failure; The second reason is that the outdoor temperature is lower in winter, and when the compressed air temperature decreases, water will precipitate, blocking the pipeline system. The pipeline system needs to be tilted and drained; Thirdly, the pipeline system is prone to corrosion and rusting after the precipitation of moisture; Fourthly, if nitrogen purity needs to be improved in the future, air purification is necessary.

The rear stage of the refrigerated dryer is a precision filter group, which consists of secondary filters. They are a 7-stage main pipeline filter and a 3-stage high-efficiency oil mist removal filter. The precision of the 7-level air supply pipeline filter is 1um, filtering out solid and liquid particles of 1um and larger, with a residual oil content of 1ppm w/w. The 3-level high-efficiency oil mist filter has a filtration accuracy of 0.01um, filtering out solid and liquid particles of 0.01um and larger, and 99.999+% oil mist; Residual oil content 0.001 ppm w/w. The compressed air quality reaches ISO8573.1 quality level 1. In this way, clean and dry compressed air can enter the subsequent nitrogen production section and undergo pressure swing adsorption to produce nitrogen gas with a purity of ≥ 98%.

3. Pressure swing adsorption nitrogen production system

There are two adsorption towers filled with carbon molecular sieves in the PSA carbon molecular sieve nitrogen production unit. Clean and dry compressed air enters the pressure swing adsorption nitrogen production unit and flows through the adsorption tower filled with carbon molecular sieves (CMS).

Regeneration is achieved by stopping the adsorption step and reducing the pressure of the adsorption tower. After the adsorption tower has completed short-term pressure equalization, it begins to depressurize and remove adsorbed components such as oxygen, water, and carbon dioxide, completing the regeneration process.

Two adsorption towers alternate between adsorption and regeneration, producing stable flow and purity product nitrogen gas. The switching between the two adsorbers is automatically completed by a programmable valve controlled by PLC. The performance of a pressure swing adsorption nitrogen production device depends on the performance of components such as adsorbers, carbon molecular sieves, process flow, equipment structure, and electromagnetic pneumatic valves.

There are two adsorption towers filled with carbon molecular sieves in the PSA carbon molecular sieve nitrogen production unit. Clean and dry compressed air enters the pressure swing adsorption nitrogen production unit and flows through the adsorption tower filled with carbon molecular sieves (CMS).

Regeneration is achieved by stopping the adsorption step and reducing the pressure of the adsorption tower. After the adsorption tower has completed short-term pressure equalization, it begins to depressurize and remove adsorbed components such as oxygen, water, and carbon dioxide, completing the regeneration process.

Two adsorption towers alternate between adsorption and regeneration, producing stable flow and purity product nitrogen gas. The switching between the two adsorbers is automatically completed by a programmable valve controlled by PLC. The performance of a pressure swing adsorption nitrogen production device depends on the performance of components such as adsorbers, carbon molecular sieves, process flow, equipment structure, and electromagnetic pneumatic valves.