UBE nitrogen separating membrane

Principle of gas molecule permeation rate

Principle of Membrane-separating nitrogen generation

Membrane- separating nitrogen separation means that nitrogen and aoxygen in the air can be separated due to the difference of their permeation rate when their molecules pass through hollow fiber membrane.

Example for membrane form

Membrane module is mainly in the form of flat plate, roll and hollow fiber.

Now, high polymer membrane in the form of hollow fiber is most prospective in application.

Major material and structure of gas separating membrane.

Main materials and structures of gas separation membrane

Membrane-separating nitrogen generator

UBE nitrogen membrane set module

Pre-possessing

◆Water/humidity: To avoid entry of liquid water, humidity <80RH%
◆Particle: Below 0.01um   ◆Residual ol: <0.01mg/Nm3
◆Hydrocarbon: <0 013mg/Nm3   ◆H2S: <3 vol%
◆Ammonia and amine: < 100vppm  ◆Acld; To be avolded
◆Aromatic: To reduce content as far as possible
◆Ethanol. Allowed to exist

Working conditions of UBE nitrogen membrane module　

◆Nitrogen purity adjustable: ~99. 9%

◆Gas intake pressure:

Low-pressure membrane module: 0.3MPa~1 4MPa; optimal pressure: 0.7~1.1MPa.
High-pressure membrane module: 0.7~2 .4MPa; optimal pressure. 1.8~2. 1MPa.

◆Gas intake temperature: 10~60*C; optimal operating temperature:25~50°C

◆Max. operating temperature: operable below 170°C (for particular membrane module).

◆Gas dew point may reach -60°C; oxygen enrichment may reach 45% max.

Features of UBE membrane module

♦Separating membrane: Wide in temperature range and high in compression strength

♦High in separating coefficient and large in gas output

♦Small in size, light in weight and high in efficiency, started instantly

♦Long service life: More than 8 years

♦Widely used in many fields, high in reliability

Application of nitrogen device

♦Nitrogen generation for oil field

♦Mobile fire fighting and extinguishing system in underground coal mine

♦Inert gas protection for chemical and (LNG, L PG) tanker ships

♦Gas conditioning for warehouse, fruit & vegetable refreshment, ocean platform

♦Pipeline purging，inert gas protection

Performance of gas separating membrane -1

♦Gas output: Flow of gas available in a unit time; increased with pressure and temperature rising

♦Recovery: Percentage of gas flow available in a unit time to mixed gas flow Service life: The service life of membrane is related to membrane performance, working environment and maintenance.

♦Note: High recovery means small consumption of compressed air, which increases slightly with pressure rising and decreases slightly with temperature rising.

Membrane-separating nitrogen generator

Performance of gas separating membrane -2

Effect of temperature on gas output and recovery (1. 1MPa, 95%)

Products and services

Cooperation flexibility and product diversification:

We provide products and services most suitable to customers'requirements from membrane module, membrane unit and membrane module program design to applied technology and
service of membrane-based nitrogen generation.

UBE gas separation membrane

Nitrogen membrane, oxygen rich membrane, dehumidification membrane,
CO2 H2 membrane, pervaporation membrane