Separation and purification of nitrogen by PSA

Principle of PSA nitrogen generation technology: Zui simple application unit of PSA nitrogen generation technology is composed of two adsorption towers filled with carbon molecular sieve, inlet and outlet gas pipelines, PLC, program-controlled valves, analysis and field instruments When the compressed air enters from the inlet end and flows through the adsorbent (carbon molecular sieve) in the adsorption tower, the oxygen molecules in the compressed air are adsorbed, while the non adsorbed nitrogen molecules are enriched and flow out from the outlet end; when the carbon molecular sieve is saturated with adsorption, close the inlet valve and outlet valve, open the exhaust valve, then the adsorbent can be desorbed, and the regeneration gas can be used for the next generation One adsorption cycle The psa-n2 process of Sichuan Yimai science and Technology Co., Ltd adopts the advanced process and supporting technology of "equalizing pressure with unequal potential", which greatly improves the yield and yield of nitrogen production by PSA Technical features of Yimai technology PSA nitrogen production equipment: 1) independent technology, advanced adsorber and unequal potential equalizing process; 2) modular design, convenient for rapid installation and commissioning; 3) energy consumption is 8% - 15% lower than that of conventional PSA nitrogen production equipment; 4) The unique air intake mode adopts advanced gas distribution and adsorption tower structure; 5) adopts the "Snowstorm" molecular sieve loading technology matched with foreign molecular sieves; 6) fully automatic unmanned operation, automatic emission of unqualified gas; 7) The adsorption tower technology matched with the imported molecular sieve can realize the normal service life of the molecular sieve up to 10 years Scale of PSA nitrogen production equipment: 1) PSA-N 2 direct separation nitrogen production purity: 95% ～ 99.9995% (oxygen free content) flow rate of single unit: 5 ～ 3000Nm 3 /h outlet pressure: 0.4-0.8MPa (adjustable) nitrogen dew point: - 45 ℃ (normal pressure) 2) Purification purity of nitrogen purification system: 99.99% ～ 99.9999% (oxygen free content) residual hydrogen content: ≤ 1ppm-2000ppm nitrogen dew point: - 60 ℃ ～ - 70 ℃ (atmospheric pressure) domestic advanced nitrogen purification process, catalyst and deoxidizer with high performance and reliability are used, At the same time, with the rich engineering experience, the long-term stable operation of the nitrogen purification system is ensured, especially the nitrogen purification equipment with low hydrogen requirement, which embodies the advanced and reliable technology of a pulse ·Hydrogenation and deaeration type; hydrogenation and dehydrogenation type; non hydrogen and peroxide deaeration type;