Everyone is familiar with nitrogen generators, and it is a kind of nitrogen generator that is widely used in various industries in society. Each industry has different requirements for nitrogen purity of nitrogen generators, so the nitrogen purity indicators of nitrogen generators in each industry are also different. So how to choose, the following small series of nitrogen generators will give a brief introduction to the majority of users.

At present, the purity of bottled nitrogen on the market is generally 99%. The standard volume of a bottle of nitrogen under 12Mpa pressure is 40 liters. Higher liquid nitrogen, generally the purity of liquid nitrogen is 99.99%. However, in practical applications, due to different industries, the purity of nitrogen used will also be different, and the pressure swing adsorption nitrogen generator can select and prepare nitrogen of different purity according to the different needs of customers.

1. Nitrogen generator for electronics industry (≥99.9% or 99.99% or ≥99.999% high-purity nitrogen produced by purification device)
Nitrogen used in the electronics industry is generally used for packaging, sintering, annealing, reduction, and storage of electronic products. Mainly used in wave soldering, reflow soldering, crystal, piezoelectric, electronic ceramics, electronic copper tape, batteries, electronic alloy materials and other industries. Therefore, the requirements for purity also vary according to different uses. Usually, the requirement cannot be lower than 99.9%, and some use 99.99% purity. In some cases, nitrogen purification equipment is used to obtain high purity products with a purity greater than 99.9995% and a dew point lower than -65°C. Quality nitrogen.
2. Nitrogen generators for metallurgy and metal processing industries (≥99.999%)
It is used for annealing protective atmosphere, sintering protective atmosphere, nitriding treatment, furnace cleaning and purging gas, etc. Used in metal heat treatment, powder metallurgy, magnetic materials, copper processing, wire mesh, galvanized wire, semiconductor, powder reduction and other fields. The nitrogen with a purity of more than 99.9% is obtained through the pressure swing adsorption nitrogen production mechanism, and the high-quality nitrogen with a purity of more than 99.9995% and a dew point lower than -65 °C is used in combination with the nitrogen purification equipment.
3. Nitrogen generators for food and pharmaceutical industries (≥99.5 or 99.9%)
Through sterilization, dust removal, water removal and other treatments, high-quality nitrogen can be obtained to meet the special requirements of the industry. Mainly used in food packaging, food preservation, medicine packaging, medicine replacement gas, medicine delivery atmosphere. Nitrogen gas with a purity of 99.5% or 99.9% is obtained through a pressure swing adsorption nitrogen generator.
4. Nitrogen generators for chemical and new material industries (generally, nitrogen purity ≥98%)

Nitrogen in the chemical industry and new material industry is mainly used for chemical raw material gas, pipeline purging, atmosphere replacement, protective atmosphere, product transportation, etc. Mainly used in chemical, spandex, rubber, plastic, tire, polyurethane, biotechnology, intermediate and other industries. Purity of not less than 98% is required.
5. Other application industries
It is also used in other fields such as coal, petroleum, and oil transportation. With the advancement of science and technology and the development of society, nitrogen is used in more and more fields. On-site gas production (nitrogen generator) has gradually replaced liquid nitrogen evaporation and bottled nitrogen with its advantages of low investment, low use cost and convenient use. and other traditional nitrogen supply methods.