Membrane Separation Nitrogen Generation Equipment
Introduction
This product utilizes the permeability selectivity of some organic polymer membranes. When air passes through the membrane or hollow fiber membrane, the speed of oxygen passing through the membrane is about 4-5 times that of nitrogen, thus achieving the separation of oxygen and nitrogen. The oxygen concentration of membrane separation can only reach 28-35% O₂.
Core components
Polymer hollow fiber membrane bundle, intake pretreatment system, pressure regulating device.
Parameter
|
Nitrogen production |
Nitrogen purity |
outlet pressure |
Dew point |
Intake pressure |
Intake air temperature |
Gas consumption ratio (air to nitrogen ratio) |
|
1-500Nm³/h |
95%-99.9% |
5 – 10 bar (G) |
≤-40℃ ~ -70℃ |
7 – 13 bar (G) |
40 – 60℃ |
About 5:1 to 8:1 |
Comparative analysis of technical parameters
● Membrane separation for nitrogen production
1. Simplest: no valve switching, static operation, fully automatic, basically maintenance free
2. Fast: Qualified nitrogen can be produced within 3 minutes of startup.
3. Extremely strong: resistant to bumps, able to operate stably on mobile platforms such as vehicles and ships
4. Medium: The standard purity is 95%~99.9%, and the flow rate is usually ≤ 500Nm ³/h. Purity is negatively correlated with flow rate.
5. Low: In low purity (<99.5%) and small to medium flow scenarios, energy consumption is usually lower than PSA.
6. Reliable, simple, mobile, and fast to start.
● Pressure swing adsorption (PSA) nitrogen production
1. More complex: There is frequent switching of programmable valves, and molecular sieves need to be replaced regularly.
2. Quickly: usually takes 10-30 minutes.
3. General: Valve switching requires installation level and is not suitable for severe vibration environments.
4. Medium to high: purity up to 99.999%, wide flow range (up to thousands of Nm ³/h)
5. Medium: There is a significant increase in energy consumption when pursuing high purity (>99.9%).
6. Economy, flexibility, and high purity.
Applicable industries and scenarios
The core advantages of membrane separation for nitrogen production determine its suitability for the following fields:
Oil and gas fields and offshore platforms
Nitrogen replacement during well repair and completion, pipeline purging, nitrogen drive. This is its iconic application, as it has no moving parts, is resistant to vibration, and is safe and reliable.
Ships And Mobile Equipment
Providing inert gas protection for ship oil tanks and chemical tanks; Installed on mobile vehicles to provide on-site nitrogen gas for remote construction sites.
Food And Medicine
Nitrogen filled packaging for food, covering of brewing storage tanks, and protection for drug transportation. Due to its lack of valve switching, no risk of oil contamination, and cleaner gas.
Other Specific Scenarios
Container transportation (protecting valuable items), small laboratories, military fields (high reliability requirements), etc.
Core application scenarios
Food industry
Packaging preservation (such as nitrogen filling and oxidation prevention for potato chips).
Petrochemical industry
Pipeline blowing, tank inerting and explosion prevention.
Firefighting
Extinguishing fires in low oxygen environments.
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