Nitrogen production equipment refers to the equipment which uses air as raw material and uses physical method to separate oxygen and nitrogen to obtain nitrogen. According to the different classification methods, i. e. cryogenic air separation, molecular sieve air separation and membrane air separation, industrial nitrogen machine can be divided into three kinds.
Wuxi Zhongheng Gas Equipment Manufacturing Co., Ltd. is a specialized manufacturer of gas separation equipment. It has advanced technical advantages in the nitrogen machine industry. Because of its focus, it is professional. With advanced science and technology, high quality and efficient service, it enjoys a good reputation in the industry and high-tech entities in many fields.
The working principle of nitrogen making equipment:
Carbon molecular sieves can absorb both oxygen and nitrogen in the air at the same time, and their adsorption capacity increases with the increase of pressure, and there is no significant difference in the equilibrium adsorption capacity of oxygen and nitrogen at the same pressure. The diameter of oxygen molecule is smaller than that of nitrogen molecule, so the diffusion rate is hundreds of times faster than that of nitrogen. Therefore, carbon molecular sieves adsorb oxygen quickly, and the adsorption rate reaches 90% in about 1 minute. At this time, the amount of nitrogen adsorbed is only about 5%, so the adsorption is mostly oxygen, while the rest is nitrogen.
In this way, if the adsorption time is controlled within 1 minute, oxygen and nitrogen can be separated initially. That is to say, adsorption and desorption are achieved by pressure difference. When the pressure rises, adsorption occurs and desorption occurs when the pressure decreases. Oxygen and nitrogen are distinguished by the difference of adsorption speed. The adsorption time is controlled very short. Oxygen has been adequately adsorbed, while nitrogen has not yet been adsorbed, so the adsorption process is stopped.
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