Oil and gas industry
Nitrogen filling anti-oxidation or nitrogen purging of pipeline containers in petroleum refining systems, storage tank nitrogen filling, replacement, leak detection, flammable gas protection, etc.
Gas purity: 99.9%, gas pressure: 0.75MPa.
Nitrogen blanketing, replacement, cleaning, pressure transport, chemical reaction agitation, chemical fiber production protection; synthetic fiber nitrogen-filled binder, wiring and oxidation prevention. Gas purity: 98~ 99.99%, gas pressure: 0.5 ~ 0.7MPa.
Nitrogen blowing, measuring liquid level of ethylene glycol raw material in the high temperature and low temperature reaction kettle, measuring pressure difference between high pressure end and low pressure end, and conveying the standard signal, and converting into the liquid level height. Pure nitrogen is used to measure the pressure of the vacuum system and the filter is backflushed in the PPA process.
Gas purity: 99.9 ~ 99.9995%, gas pressure 0.5 ~ 0.55MPa.
Underground explosion-proof and coal-fired fire-fighting, injecting a certain amount of nitrogen into the oxidation zone or the fire zone to reduce oxygen content to 10% or less, to achieve the purpose of fire prevention. Its function is to eliminate the danger of gas explosion; prevent natural heat and spontaneous combustion of coal; reduce combustion intensity;
Gas purity: 97% ~ 98%, gas pressure 0. 6MPa.
In the heat treatment process of bright annealing, bright quenching, bright tempering, etc., protective gas and safety gas nitrogen are provided for the industrial furnace to prevent the oxidation of the product; in carburizing and nitriding process, nitrogen is usually used for the furnace to be purged.
Gas purity : 99.5 to 99.9995%, and gas pressure: 0.1 to 0.6 MPa.
Metal production and processing
Nitrogen can protect metals such as steel, copper and aluminum pin annealing, carburizing and sintering process in high temperature furnaces; cooling extruded film; cold shrinkage of metal parts; for plasma cutting; gas protection for aluminum products, aluminum profile processing, aluminum thin rolling etc;
Gas purity: 99.9995%, gas pressure 0.3 ~ 0. 5MPa
Nitrogen as shielding gas, diluent gas, carrier gas for automation system semiconductors, electronic components production; nitrogen-filled lead-free soldering for semiconductor and printed circuit manufacturing to prevent oxidation.
Gas purity: 99.99% to 99.9995%, gas pressure 0.3 to 0. 75MPa.
Nitrogen can prevent oxidation, mold growth, moisture and pest infestation of packaged foods, thus prolonging the shelf life; quick freezing, and refrigerating perishable foods during transportation; use as beverage packaging process gas for preservation and storage.
Gas purity: 99% to 99.9%, gas pressure 0.4 to 0.5MPa.