Detailed Product Description

Features:
1) Oxygen production: 100 - 3,000Nm³/h
2) Characteristics:
a) Quick and convenient start and stop
b) Low investment and energy consumption
c) High automation
d) Simple operation and maintenance
e) Short installation period and small ground treatment workload
3) Parts:
a) Air fan and vacuum pump: air fan provide air source for the whole system.
Based on VPSA oxygen generator design condition and customer requirements,
fan with proper outlet air pressure is to be provided. Vacuum pump ensures
correct system operation and keeps the system in ideal vacuum state, which
ensures equipment constantly adsorb nitrogen and produce oxygen
b) Temperature regulating system: air temperature regulating system is made up of
a water cooler and an electric heater. The temperature of air compressed by fan is
around 65 – 70^oC, passing the water cooler, its temperature is
reduced to meet the requirements of process operation. Then it is sent into the
adsorption towers. In winter, the temperature of air is to be increased by the
electric heater and reaches the requirements of process operation
c) Adsorption system: the adsorption system mainly consists of two towers filled
with zeolite molecular sieve adsorbents and piping valves etc. Air enters into the
bottom of one tower, when passing through the adsorbent layer, N2, oxygen,
Vapor are adsorbed by molecular sieve and oxygen passes through the
absorbents and gathers at the top of tower, flowing out as produced gas,
meanwhile the other tower is in the process of regeneration. When the adsorbing
tower almost reaches saturation, by the operation of control system, the
processing air flows into the regenerated tower and begins to produce
oxygen.Two towers alternately adsorb and constantly produce oxygen
d) Oxygen buffer tank: compared with three-tower process, oxygen generator
with two towers can not produce consecutive oxygen, therefore, a buffer tank
with large volume is needed for stable oxygen output
e) Control system:
i) System process is achieved by DOS control system. In this system, valves
switches are independently controlled by PLC (Programmable Logic Controller).
Analog signals of test sensors communicate with the main control system
through specific communication protocols. Relevant data of specific unit can be
sent to main control system and remote control signals of main control system
can be accepted by specific unit
ii) In order to ensure safe oxygen supply, functions of interlink, protection,
alarm, print, record etc can be provided
iii) The output variation of oxygen supply can be adjusted by DCS control system.
System operating parameters can be adjusted to save energy
iv) The main control system adopts industry computer, provided with specific
software and convenient human-machine touching screen, Start/stop and
operating parameter collection can be realized on control panel. Remote
monitor and print of running status record can be easily achieved