Select the most suitable nitrogen separation method for your industrial nitrogen project

The selection of nitrogen separation method is the key of the whole nitrogen production project. It is not only related to the construction cost of the nitrogen production project, but also related to the long-term operation cost of the whole nitrogen production project. Therefore, it is particularly important to select the appropriate nitrogen separation method.

Cryogenic Nitrogen Separation Method

Cryogenic air separation technology is a traditional nitrogen production technology. Liquefied the compressed and purified air into the liquid air by the method of heat exchange,then reach the purpose of nitrogen separation by distillation method by using of the different boiling points of different liquefied gases. Cryogenic air separation equipment not only covers a large area, has high capital construction,equipment costs and operating costs, and strict installation requirements, but also has slow nitrogen production speed and long cycle. Therefore, in terms of cost and convenience, it is more suitable for large-scale industrial nitrogen production.

PSA (Pressure Swing Adsorption) Nitrogen Separation Method

Using carbon molecular sieve for nitrogen generation is well known as PSA nitrogen separation technology.
To enrich nitrogen by using the carbon molecular sieve priority selection adsorption of oxygen molecules.
Carbon molecular sieve nitrogen generation is also a type of physical air separation technology,but it has s series of advantages compare with cryogenic nitrogen production,such as simple process,high-degree automation,high-speed of nitrogen generation,low energy consumption,nitrogen purity can be adjust flexibly.

Carbon molecular sieve nitrogen generation can well meet the demand of nitrogen flow less than 3000m3/h in various fields of nitrogen application industry. It is increasingly popular with small and medium-sized nitrogen production users, and has become the preferred method for small and medium-sized nitrogen production users.

PSA nitrogen separation is the most preferable nitrogen separation method

Membrane Nitrogen Separation Method

Membrane air separation technology also known as hollow fiber membrane separation technology.Under certain pressure, nitrogen separation is realized by utilizing the different permeability characteristics of oxygen and nitrogen in the membrane.
Compared with others nitrogen generation technology,membrane air separation technology has the advantages of simpler structure, smaller volume, less maintenance, faster gas production speed, and more convenient expansion.

However, membrane nitrogen separation technology has an obvious disadvantage, that is, when used to produce nitrogen with purity higher than 99.5%, the cost of nitrogen production is much higher than use carbon molecular sieve for nitrogen separation.

membrane nitrogen separation method is a newest method for nitrogen separation