Nitrogen Generator for Chemical Industrial Reactors

Working Principle of the Reactor Nitrogen Generator:

The working principle of the reactor nitrogen generator is based on the adsorption differences of different gas molecules on specialized carbon molecular sieve materials. The process of the PSA nitrogen generator first involves compressing air. After the air is compressed by the compressor, it enters a filtration system to purify the compressed air, removing impurities such as dust, oil, and moisture. The filtered compressed air then enters an adsorption tower filled with specialized carbon molecular sieve. When the compressed air flows through the carbon molecular sieve layer, oxygen and other gas molecules are adsorbed by the molecular sieve, while nitrogen molecules are less likely to be adsorbed and can pass through the sieve smoothly, exiting from the outlet end of the adsorption tower to produce high-purity nitrogen. After a period of adsorption, the molecular sieve gradually becomes saturated. At this point, the air supply to the adsorption tower needs to be stopped, and the tower undergoes processes such as depressurization, purging, and heating for regeneration to desorb oxygen, carbon dioxide, and moisture from the sieve, restoring its adsorption performance. PSA nitrogen generators are typically equipped with two or more adsorption towers that alternate between adsorption and regeneration, enabling continuous and uninterrupted nitrogen production. Through a series of compression, purification, separation, and regeneration processes, the PSA nitrogen generator can provide users with high-purity, stable-flow on-site nitrogen.

Process Characteristics of the Reactor Nitrogen Generator:

The reactor adsorption nitrogen generation technology consists of three parts: an air compressor, a compressed air pretreatment system, and a pressure swing adsorption tower. It demonstrates unique advantages in small and medium-scale industrial nitrogen production, though its pros and cons in large-scale applications remain to be evaluated. The low equipment cost makes pressure swing adsorption nitrogen generation technology particularly suitable for small and medium-scale industrial nitrogen production. Compared to advanced technologies such as new membrane separation,, the procurement and operational costs of pressure swing adsorption equipment are lower. This reduces the equipment investment threshold for small and medium industrial users,, making it easier for them to obtain nitrogen production lines that meet their capacity needs. The advantage of low initial investment cost, gives pressure swing adsorption technology broad application prospects in this field. Additionally,, the energy consumption performance during operation is also notable in small and medium-sized equipment., By carefully controlling the pressure parameters in the adsorption tower,, the nitrogen separation process can operate for extended periods under normal working conditions,, achieving a high energy efficiency ratio. This characteristic reduces operating costs,, improves economic efficiency,, and is more favored by cost-sensitive small and medium users.

Process Flow of the Reactor Nitrogen Generator:

The PSA reactor nitrogen generator is a gas separation device that utilizes pressure swing adsorption technology, primarily used to separate nitrogen from air. Its process flow consists of three steps:
（1）: Air compression and purification. A compressor is used to compress air, and filters remove impurities and moisture.
（2）: Oxygen-nitrogen separation. Using an adsorption tower with specialized carbon molecular sieve, oxygen and nitrogen in the air are separated by alternating adsorption and regeneration processes.
（3）: Nitrogen output. Pure nitrogen flows out of the adsorption tower and is supplied for use once the desired purity is achieved.
The workflow of the nitrogen generator is controlled by a programmable logic controller (PLC) operating ten 2-position 5-port pilot solenoid valves, which in turn control the opening and closing of ten pneumatic pipeline valves. These ten solenoid valves respectively control the left adsorption, pressure equalization, and right adsorption states.