The Role of Nitrogen Generators in Various Industries

In the coal mining industry, nitrogen generators are suitable for fire prevention and extinguishing, as well as diluting methane and coal gas during coal extraction. They come in three specifications: ground-mounted fixed, ground-mounted mobile, and underground mobile, fully meeting the nitrogen requirements under various working conditions.

2. Nitrogen generators are suitable for nitrogen protection and molding in the vulcanization process of rubber and tire production within the rubber tire industry. They can also be used to inflate car tires with nitrogen, extending tire lifespan and reducing noise.

3. Nitrogen generators are suitable for various applications in the oil and gas industry, such as nitrogen protection, transportation, covering, displacement, emergency rescue, maintenance, and nitrogen injection for oil recovery during oil and gas extraction. They are characterized by high safety, strong adaptability, and continuous production capabilities.

4. In the metallurgy industry, nitrogen generators are suitable for heat treatment, bright annealing, protective heating, powder metallurgy, copper and aluminum processing, magnetic material sintering, precious metal processing, and bearing production. They feature high purity and continuous production capabilities.

5. Nitrogen generators are applicable in the chemical industry across sectors such as petrochemical, coal chemical, salt chemical, natural gas chemical, fine chemical, and new material processing, as well as their derivative chemical products. Nitrogen gas is primarily used in areas such as covering, sweeping, displacement, cleaning, pressure conveyance, stirring in chemical reactions, protecting fiber production, and nitrogen protection.

In the food industry, nitrogen generators are suitable for green grain storage, nitrogen-filled packaging for food, vegetable preservation, wine encapsulation and conservation, etc.

The Function of Nitrogen Generators

Nitrogen GeneratorManufactured from clean, dry compressed air, we produce high-purity nitrogen gas that is continuously supplied. Widely applicable in...Nitrogen Generation System for Nitrogen ProductionIt's an effective, more economical, and reliable method that can replace liquid nitrogen or bottled nitrogen gas. Pure nitrogen cannot be directly extracted from nature and is primarily obtained through air separation techniques, which include: cryogenic separation, pressure swing adsorption, and membrane separation.

Deep Chilling Method

This method involves compressing, cooling, and liquefying air, taking advantage of the different boiling points of oxygen and nitrogen components (oxygen's boiling point is 90K and nitrogen's is 77K at atmospheric pressure). The gas and liquid are brought into contact on the trays of a distillation tower, where mass and heat exchange occur. Oxygen, with its higher boiling point, continually condenses from the vapor into a liquid, while nitrogen, with its lower boiling point, continuously transfers into the vapor, increasing the nitrogen content in the ascending vapor and the oxygen content in the descending liquid, thereby separating oxygen and nitrogen. This process is conducted at temperatures below 120K, hence it is known as deep cold air separation.

Transformer Adsorption Method

The Pressure Swing Adsorption (PSA) method, also known as the VSA method, separates nitrogen from air by selectively adsorbing oxygen and nitrogen components. As the air is compressed and passes through the adsorption tower's adsorption layer, oxygen molecules are preferentially adsorbed, while nitrogen molecules remain in the gas phase, forming nitrogen. When the adsorption reaches equilibrium, the oxygen molecules adsorbed on the molecular sieve surface are removed by reducing the pressure, thereby restoring the adsorption capacity of the adsorbent, a process known as desorption. To continuously supply nitrogen, the unit typically consists of two or more adsorption towers, with one tower adsorbing and another desorbing, switching operation at appropriate intervals.

3. Membrane Separation Method:

Membrane separation technology utilizes the permeability selectivity of organic polymer membranes to separate enriched nitrogen gas from gas mixtures. Ideal film materials should possess high selectivity and permeability. To achieve an economic process, very thin polymer separation membranes (0.1μm) are required, necessitating support. Permeators commonly used are plate-type permeators and hollow fiber permeators. With large gas production, the required film surface area is too great, leading to high film costs. Although the membrane separation process is simple and easy to operate, its industrial application is not widespread, and this article will not elaborate further.