PSA Nitrogen Plant

PSA Nitrogen Generator Process Overview

Carbon molecular sieves and zeolite molecular sieves are widely used in the field of nitrogen and oxygen production. The separation effect of molecular sieves on oxygen and nitrogen is mainly based on the different diffusion rates of these two gases on the surface of molecular sieves. Carbon molecular sieve is a carbon-based adsorbent that has some characteristics of activated carbon and molecular sieves. Carbon molecular sieves have very small micropores, and the pore size distribution is between 0.3nm and 1nm. Gases (oxygen) with smaller diameters diffuse faster and enter the molecular sieve solid phase more, so that nitrogen enrichment components can be obtained in the gas phase. After a period of time, the molecular sieve's adsorption of oxygen reaches equilibrium. According to the characteristics of the carbon molecular sieve's different adsorption amounts of adsorbed gas under different pressures, the pressure is reduced to release the carbon molecular sieve's adsorption of oxygen. This process is called regeneration. The pressure swing adsorption method usually uses two towers in parallel, alternating pressurized adsorption and decompression regeneration to obtain a continuous nitrogen flow.

Industrial Nitrogen Generator Scope

Using air as raw material and carbon molecular sieve as adsorbent, the method of separating nitrogen and oxygen by using the principle of pressure swing adsorption and selective adsorption of oxygen and nitrogen by carbon molecular sieve is commonly known as PSA nitrogen production. This method is a new nitrogen production technology that developed rapidly in the 1970s. Compared with traditional nitrogen production methods, it has the characteristics of simple process flow, high degree of automation, fast gas production (15 to 30 minutes), low energy consumption, product purity can be adjusted within a large range according to user needs, convenient operation and maintenance, low operating cost, and strong device adaptability. NEWTEK nitrogen production equipment below 1000Nm3/h is quite competitive in the world and is increasingly welcomed by medium and small nitrogen users. PSA nitrogen production has become the preferred method for medium and small nitrogen users.

Q: What is the working principle of PSA nitrogen plant?

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