Air Separation Unit KDON-7500/18000 Nm3/h External Compression
Steelmaking Industry Gas
Air Separation Unit Product List of KDON 7000~ 9000 Nm3/h GOX
≤2 ppm O2≤3 ppm N2
≤2 ppm O2≤3 ppm N2
Typical Product: KDON-7500/18000 Air Separation Unit
Output, purity and pressure
2.5 (external compression)
3 (external compression)
This plant employs an external compression process in which air is
absorbed and purified by molecular sieve in completely low
pressure, and air turbine boosting expander is used to produce
refrigerating capacity. It has the advantages of reliable running,
advance process and easy operation.
The equipments of this plant have the advantages of economy and
reasonable configuration for units, safe and low consumption,
The equipments of this plant meet the related professional
technical manual and standard.
This plant and its units are specially designed and optimized for
the process according to the local weather and engineering
specifications to make sure the ASP can adapt to the local
The display of the process parameters for all units and the main
operation adjustment function can be carried out through computers
in the center control room, and can be displayed in other control
rooms, which can well meet the requirements of informatization and
network for the factory.
Liquid oxygen is extracted from the main condenser evaporator,
which can effectively prevent the accumulation of dangerous
impurities such as hydrocarbon. The safe running of condenser
evaporator can be effectively guaranteed without special operation
- N2 Converter Rental
- Nitrogen Purging & Pressurize Test
- Cutting Gas
- Welding Gas
- Sealing Gas
- Filling Gas
1. Employ advanced and reliable DCS control system
1.1. The instrument control system can effectively monitor the
production process of the ASP to make sure the reliable running and
easy operation and maintenance. Employ the principle that mainly
use centre concentrated monitoring, and combined with local
cabinets and onsite instruments monitoring.
1.2. The display of the process parameters for all units and the
main operation adjustment function can be carried out through
computers in the center control room.
1.3. The process of this plant is through optimization design
1.3.1. The process of this plant is decided after detailed
analytical calculation with the classic physical property library,
and the air separation physical property library software developed
by Hangyang on the base of classic chart, process thermodynamic
calculation software developed by Hangyang, American HYSYS
thermodynamic calculation software, specialized air cooling and
molecular sieve system performance and structure calculation
software, American S-W company plate heat exchanger calculation
software and American NREC turbo wheel design and process software.
1.3.2. The process design of this plant is according to the rich
design and manufacture and installation operating experience of
several middle and small ASP of Hangyang, which reflects the
international advance design philosophy, and under the premise of
guaranteeing the reliability of the plant, it also considers the
reasonability, safety and advancement, which are mainly reflected
in the following aspects:
18.104.22.168. With advance technical performance index
The important indexes to measure the performance advantage of ASP
are oxygen production energy consumption and the extraction
efficiency of oxygen. This ASP can guarantee the high rectifying
column oxygen extraction efficiency, and at the same time the
matched units have excellent single performance indexes to make
sure the excellent combination performance indexes of the plant.
22.214.171.124. The static equipment lower column employs sieve plant
column, and the upper column, crude argon column and pure argon
column employ packing column.
126.96.36.199. The new efficient air pre-cooling system with water
cooling tower is employed, which makes the most of the
hygroscopicity of dry waste nitrogen and cooling water unit to
reduce the temperature of cooling water.
188.8.131.52. The molecular sieve is designed as double-layer bed and
long period, whose life is long, regeneration energy consumption is
low ,and working condition is stable.
1.3.4. Safety and reliability are taken into consideration for
process organization and design
The features of the external compression equipments are fully
considered during the process organization and design. Well design
the start, adjust, normal and accident stop of the plant from the
process organization and design angle to make sure the safety and
reliability of the plant.