Overview
Nitrogen gas (N₂) constitutes 78% of Earth's atmosphere and is the fifth most produced industrial gas globally. Its inert nature makes it indispensable for creating controlled environments where oxidation or other chemical reactions must be prevented. Industrial nitrogen is typically produced through cryogenic air separation or membrane filtration processes, with purity levels ranging from 99.5% for general industrial use to 99.9999% for high-tech applications. The gas is commonly distributed in high-pressure cylinders (up to 300 bar), liquid form in cryogenic tanks, or through on-site generation systems. The choice between these supply methods depends on volume requirements, usage patterns, and infrastructure considerations at the facility.
Physical and Chemical Properties
As a diatomic molecule with a strong triple bond, nitrogen exhibits exceptional stability with a bond dissociation energy of 945 kJ/mol. This explains its low reactivity at standard temperatures. The gas has a density slightly less than air (1.2506 g/L vs. 1.293 g/L for air at STP), which affects its behavior in ventilation scenarios. Nitrogen becomes liquid at -195.79°C under atmospheric pressure, making it valuable for cryogenic applications. Its thermal conductivity (0.024 W/m·K at 0°C) and specific heat capacity (1.04 kJ/kg·K) influence its performance in cooling systems. The gas shows minimal solubility in water and most organic solvents, a property exploited in blanketing applications.
Main Applications
In food packaging, nitrogen displaces oxygen to extend shelf life (Modified Atmosphere Packaging), preventing oxidative rancidity and microbial growth. The electronics industry uses ultra-high-purity nitrogen (99.999%) as a process gas in semiconductor manufacturing and soldering operations to prevent oxidation of sensitive components. Metal fabrication employs nitrogen for laser cutting (as an assist gas for non-ferrous metals), heat treating, and welding protection. Chemical plants utilize it for reactor blanketing, pipeline purging, and as a carrier gas. The pharmaceutical industry relies on nitrogen for drug packaging and as an inert atmosphere in sensitive production processes.
Safety and Storage
While non-toxic, nitrogen poses significant asphyxiation risks as it can displace breathable air in confined spaces. Oxygen monitors should be installed in areas with potential nitrogen accumulation. Cylinders must be secured upright and protected from physical damage, with valve protection caps kept on when not in use. For liquid nitrogen, specialized cryogenic containers with pressure relief devices are mandatory. Personnel handling cryogenic nitrogen require PPE including face shields, cryogenic gloves, and protective footwear. Storage areas should be well-ventilated, with oxygen deficiency alarms recommended for large installations.
B2B Procurement Guide
When sourcing industrial nitrogen, specify the required purity level based on application: Food grade (99.5%), Industrial grade (99.9%), or High purity (99.999%+). Determine the most cost-effective supply method - bulk liquid for high-volume users (typically >500 m³/month), cylinder bundles for medium demand, or on-site generation for continuous high-volume needs. Evaluate supplier reliability, delivery frequency, and emergency response capabilities. For specialized applications, request certificates of analysis and material safety data sheets. Consider total cost of ownership including equipment rental, transportation, and evaporation losses for liquid systems.
Related Manufacturers
- 主营：氮气发生器、氮气制造机器、制氮设备
- 主营：高纯氮、高纯氦气、高纯氩气、氧气乙炔氮气、氮气、高纯氮气、高纯二氧化碳、液氮、医用氧气、氧气、乙炔、二氧化碳、氩气、六氟化硫、甲烷、食品二氧化碳
- 主营：吸干机、制氧机、制氮机、氮气机、工业氮气器、氮气发生器、食品充氮气、制氢设备、复合分子筛、氧气发生器、工业氧气机、不锈钢管道、水产养殖吸氧机
- 主营：锂电池、制氮机、制氮设备、高纯氮气、工业氮气机、高纯度氮气、氮气发生器、氮气纯化设备、激光切割、高纯度制氮、箱体制氮一体机
- 主营：送氩气、氩弧焊、区氩气、区氮气、送氮气、氮气电话、高纯气体、瓶装气体、瓶装氮气、工业气体、高纯氮气、氮气充气站、氮气供应站、送氧气、区氧气、站点电话、氧气电话、高纯氩气、高纯氧气、电话氩气、高纯o2氧气、氩气充气站、氧气充气站、充气站电话、南开区高纯
- 主营：液态氩、液氮瓶、高纯氢、化学气体、专用气体、气体氩气、气体冰矿、液态氮气、压缩气体、标准气体、加压气体、气体丙烷、巨洋气体、气体运输、运输车、瓶装气、气瓶检测、高纯液氮、高纯氩气、不锈钢瓶、钢瓶检测、氢气飞艇、高纯氧气、瓶装氧气、钢瓶包装
- 主营：氦气、液氦、六氟化硫、食品氮气、液氮、氩气、液氩
- 主营：激光切割、安全便携氦气、高纯氩、高纯氮气、分析标准气体、工业氮气气体、气体减压表、实验室用工业级氮气、激光切割氮气容器测压、高纯氦、黄铜减压表、液态氧
- 主营：配比柜、触摸面板、配气设备、气体设备、氮气净化装置、气体纯化装置、气体回收设备、气体纯化设备、氢气纯化设备、氩气净化设备、多元配气机柜、全自动氢气纯
- 主营：食品制氮机、工业制氮机
- 主营：制氮机、工业制氧机、氨分解制氢、氮气发生器、氮气机、氮气设备、高原制氧机、高纯制氮机、大型制氧机、高纯制氧机、食品制氮机、激光切割制氮机、酒店制氧机、高原酒店制氧机、psa制氮机
- 主营：滚筒夯、扫地车、短管置换设备、破碎锤、锚索切割机、破冰机、液压剪、等离子切割机、劈裂机、岩石锯、板换夹紧器、焊网机、顶管机、皮带取样机、生物质燃烧机、喷砂机、激光除锈机、制氮机、装载机扫路车、马路吹风机、铣挖机、污水处理设备、洗车机、截桩机、轨道运输车
- 主营：储存罐、燃气气化器、低温液体储罐、气体回收装置、液氮气体、高纯液氮气体、工业液氮气体、液氮、液氧、液氩、二氧化碳、液态二氧化碳、液体二氧化碳、食品级液氮、液氮储罐、液氧储罐、液氩储罐、二氧化碳储罐、液体二氧化碳储罐、液态二氧化碳储罐、液氮管道、真空管、液氮真空管、低温液体管道、液氮设备
- 主营：气化器、汽化器、调压阀、液氮气体、高纯液氮气体、工业液氮气体、工业高纯液氧气体、减压阀组、燃气设备、汽化减压撬、低温气化设备、液氧气化装置、燃气减压装置、压力调节阀组、天然气散冷设备、调压装置减压阀、液氮、液氧、液氩、二氧化碳、液体二氧化碳、液氮储罐、液氧储罐、液态氧气、瓶装液态氧气
- 主营：液氧、液氩、液氮、氮气、氧气、氩气