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Products>Nitrogen Membranes>Applications>Chemical Processing

Production, storage, and handling of chemicals will sometimes require the use of chemically inert nitrogen. Nitrogen is used by the chemical industry to protect against the danger of fire, moisture contamination, and discoloration or product degradation that results from atmospheric moisture and oxygen.

 

Typical applications of Generon membranes for the chemical industry are:
  • Blanketing
  • Pressure Transfer / Unloading
  • Pipeline and Vessel Purging
  • Reactor Sparging
  • Pigging
  • Drying

 
Where is GENERON Nitrogen Best Applied?
In many cases, the exact purity of nitrogen for a given operation is not known. However, the following generalizations can be made:
  • When a material is blanketed for flammability or moisture protection, 95% nitrogen may be adequate.
  • Chlorinated solvents are blanketed for moisture protection.
  • Amines are sensitive to discoloration, with the sensitivity increasing as the amines move form mono to tri.
  • Glycols are blanketed for moisture protection.
  • Alcohols are blanketed for moisture protection.
  • Hydrocarbons are blanketed for flammability protection.
  • Higher purities of nitrogen may be needed for chemical processing operations, where 95% nitrogen is adequate for storage and transfer operations.

 

Maximum Permissible Oxygen to Prevent Ignition of Flammable Gases & Vapors Using Nitrogen for Inerting
Chemical
O2 Percentage*
Acetone 11%
Benzene 9%
Butadiene 8%
Butane 9.5%
Butene 9%
Carbon Disulfide 4%
Carbon Monoxide 4.5%
Cyclopropane 9%
Dimethylbutane 9.5%
Ethane 9%
Ether 8.5%
Ether (Diethyl) 8.5%
Ethyl Alcohol 8%
Ethylene 9%
Gasoline 73-146 Octane 9.5%
Hexane 9.5%
Hydrogen 4%
Hydrogen Sulfide 6%
Isobutane 9.5%
Isopentane 9.5%
JP-1 Fuel 8.5%
JP-3 Fuel 9.5%
JP-4 Fuel 9%
Kerosene 9%
Methane 9.5%/td>
Methyl Alcohol> 8%
Natural Gas 9.5%
Neopentane 10%
n-Heptane 9%
Pentane 9%
Propane 9%
Propylene 9%




NOTE: Data in this table was determined from a publication of the U.S. Bureau of Mines. Data was determined by laboratory experiments conducted at atmospheric temperature and pressure. Vapor-air inert gas samples were placed in explosion tubes and exposed to a small spark or open flame. In the absence of reliable data, the U.S. Bureau of Mines or another recognized authority should be consulted.

*General industrial practice seldom uses purities below 95% for these applications. Often higher purities than 95% are utilized based on customer's internal safety standards.

*Please note: These data sheets are provided by Generon IGS for guidance only. They are in no way to be guarantees of performance. There is no warranty or promise expressed or implied.