R & DIntroduction of the most commonly used air separation nitrogen making machine in three industries
Article Source：Suzhou Shenyue Purification Website：www.szshenyue.comTime：2017-10-9Pageviews
：855
Core prompt：Membrane separation of nitrogen (hollow fiber membrane separation): air as raw material, under certain pressure conditions, the use of oxygen and nitrogen and other gases of different properties in the membrane has a different penetration rate to separate
Membrane separation of nitrogen (hollow fiber membrane separation): air as raw material, under certain pressure conditions, the use of oxygen and nitrogen and other gases of different properties in the membrane has a different penetration rate to separate oxygen and nitrogen. Compared with other nitrogen machine it has simpler structure, smaller size, less maintenance, no switching valve, gas production faster (less than 3 minutes), has the advantages of convenient capacity, it is particularly suitable for the purity of nitrogen is less than or equal to 99.5% small and medium-sized nitrogen users have the best function price ratio. When the purity of nitrogen is more than 98%, the price is higher than 15% compared with the same standard PSA nitrogen making machine.
Molecular sieve airseparation nitrogen (PSA or PSA): a 3000Nm3 / h in the following nitrogen machine in the competition, more and more small and medium-sized nitrogen users, PSA nitrogen has become the method of choice for small and medium-sized nitrogen users. Because of the use of air as raw material and carbon molecular sieve as adsorbent, the method of separation of nitrogen and oxygen by the selective adsorption of oxygen and nitrogen by carbon molecular sieve, using the pressure swing adsorption principle, is generally called PSA nitrogen making. This method is a new nitrogen making technology developed rapidly in 70s. Compared with the traditional nitrogen method, simple process, high degree of automation, rapid gas production (15 ~ 30 minutes), low energy consumption, product purity in wide range can be adjusted according to user needs, convenient operation and maintenance, low operation cost, strong adaptability and other characteristics of device.
Cryogenic air separation and nitrogen production: cryogenic air separation of nitrogen is a traditional method of nitrogen production, which has a history of nearly a few decades. It uses air as raw material, through compression, purification, and then uses heat exchange to liquefy the air into liquid air. Liquid air is mainly a mixture of liquid oxygen and liquid nitrogen, the boiling point of liquid oxygen and liquid nitrogen (in 1 different atmospheric conditions, the boiling point is -183 DEG C, the latter is -196 Deg. C), through the distillation of liquid air, making them separation to get nitrogen. The cryogenic air separation and nitrogen making machine is complex, covers a large area, and has high capital construction cost. The equipment has many advantages, such as one-time investment, high operation cost, slow gas production (12 ~ 24h), high installation requirements and long cycle. The investment scale of PSA equipment below 3500Nm3 / h is 20% - 50% lower than that of cryogenic air separation unit. The cryogenic air separation and nitrogen making machine is suitable for large-scale industrial nitrogen production, while the middle and small-scale production of nitrogen is uneconomical.
Molecular sieve airseparation nitrogen (PSA or PSA): a 3000Nm3 / h in the following nitrogen machine in the competition, more and more small and medium-sized nitrogen users, PSA nitrogen has become the method of choice for small and medium-sized nitrogen users. Because of the use of air as raw material and carbon molecular sieve as adsorbent, the method of separation of nitrogen and oxygen by the selective adsorption of oxygen and nitrogen by carbon molecular sieve, using the pressure swing adsorption principle, is generally called PSA nitrogen making. This method is a new nitrogen making technology developed rapidly in 70s. Compared with the traditional nitrogen method, simple process, high degree of automation, rapid gas production (15 ~ 30 minutes), low energy consumption, product purity in wide range can be adjusted according to user needs, convenient operation and maintenance, low operation cost, strong adaptability and other characteristics of device.
Cryogenic air separation and nitrogen production: cryogenic air separation of nitrogen is a traditional method of nitrogen production, which has a history of nearly a few decades. It uses air as raw material, through compression, purification, and then uses heat exchange to liquefy the air into liquid air. Liquid air is mainly a mixture of liquid oxygen and liquid nitrogen, the boiling point of liquid oxygen and liquid nitrogen (in 1 different atmospheric conditions, the boiling point is -183 DEG C, the latter is -196 Deg. C), through the distillation of liquid air, making them separation to get nitrogen. The cryogenic air separation and nitrogen making machine is complex, covers a large area, and has high capital construction cost. The equipment has many advantages, such as one-time investment, high operation cost, slow gas production (12 ~ 24h), high installation requirements and long cycle. The investment scale of PSA equipment below 3500Nm3 / h is 20% - 50% lower than that of cryogenic air separation unit. The cryogenic air separation and nitrogen making machine is suitable for large-scale industrial nitrogen production, while the middle and small-scale production of nitrogen is uneconomical.
Keywords：PSA Hydrogen Production，Nitrogen making machine in metallurgical industry
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