Cryogenic Air Separation Plant
Cryogenic air separation plants are particularly well suited for producing liquefied gases such as oxygen (O2), nitrogen (N2) and argon (Ar).
Air separation relies on cryogenic rectification technology that involves cooling air to -195 degrees Celsius before partially liquefying it.
DSW offers a cryogenic air separation plant equipment solution with excellent engineering teams using advanced 3D stress, strength, design, and management software.
We have sold over 450 sets of air separation equipment widely used in steelmaking, chemical, electronic, glass, building materials, medicine, new materials, gas producers and other fields.
| Products | Flow（Nm³/h） | Purity (%) | Pressure (barG) |
| LO2 | 1500(50TPD) | ≥99.6 | ~0.5 |
| Or LN2 | 1500 | ≤10ppmO2 | ~4 |
| Start Time | ≤8hours（warm start） | ||
| ≤2hours（stop 24h） | |||
| Heating Cycle | 24months（The design value is subject to actual use） | ||
| Unfreezen Time | ~24 hours | ||
| These performances are designed according to the Condition 1 Liquid oxygen, as the primary working condition, participates in the assessment Standard industrial power consumption tolerance: Flow±5%, purity0% |
|||
·1. Liquid oxygen equipment and nitrogen equipment
·2. Medium and small equipment for oxygen and nitrogen production
·3. High-purity nitrogen equipment
·4. Oxygen and nitrogen liquefaction equipment
·5. Pressure swing adsorption oxygen and nitrogen production equipment
·6. And air separation auxiliary equipment.
Leading equipment of Air Separation Unit, Oxygen Gas Plant, Liquid Oxygen Plant:
Air compressor ;
Air tank ;
Precision filter ;
Air pre-cooling system ;
Water separator ;
Molecular sieve purification system ;
Heater or molecular sieve purification system ;
Rectification column ;
Heater or the rectification column ;
Gas bearing turbo-expander ;
Liquid Oxygen Pump ;
Filling device ;
Electrical & instrument control system ;
Liquid storage tanks ;
Gas cylinders, etc
Main Features of Air Separation Machine, Cryogenic Air Separation Plant, Gas Plant-Liquid Oxygen Plant:
This development and design of flow is new; my company use the technology to mature.
2. Simple operation, convenient maintenance, short starting time, and low unit power consumption.
3. Oxygen of high purity and very stability meets and exceeds technical indicators of GB8982-1998<<medical oxygen>>
4. The use of air cooling equipment does not need cooling water and is adaptable, saving the cost.
5. Security: The outside compression process is oxygen being compressed at room temperature.
Inside the compression process, liquid oxygen is compressed at a low temperature. Security of the inside compression process;
Extraction of a lot of liquid oxygen from an evaporation condenser To ensure that there is no accumulation of hydrocarbons;
Evaporation of high pressure with liquid oxygen reduces the possibility of hydrocarbon accumulation and reduces fire hazards.
6. Reliability: The liquid oxygen pump has excellent performance and is easy to maintain;
The booster compressor has one or two compressions, and the oxygen compressor Booster compressor has three or five contractions. High reliability of the booster compressor.
We mainly exported to many countries such as Egypt, Thailand, Vietnam, Bangladesh, Indonesia, Angola, Korea, Uzbekistan etc. We provide below following:
The leading equipment of the air separation plant :
(1) Self-cleaning air filter
It is a mechanical and electrical integration equipment, the automatic realization of air filtration and filtration components of the automatic cleaning。 The air filter operates as usual during the automatic cleaning of the filter element.
(2)Air Compressor
Atlas copco、Hanwa(Samsung)
The air compressor adopts an oil-free centrifugal type, which compresses the raw air to the pressure required by the process. The brand is internationally renowned, such as Atlas Copco, Ingersoll Rand, etc.
(3)Air pre-cooler
The air pre-cooler condenses the gaseous water in the compressed air into droplets using cooling and then separates the gas and liquid through the separator. And the outlet temperature is controlled at 5℃ ~10℃,
The main components adopt international brands, such as Germany bizer, Denmark danfoss, America Emerson, etc.
We use Siemens PLC control and can use RS485 I/O, Profibus, and Modbus communication types.
(4)MS Purifier
The two adsorption vessels in the purification system work alternately. When one vessel is in the adsorption cycle, the other vessel is in the regeneration cycle. The exhaust gas of the equipment is regenerated. Siemens PLC’s control system controls this technological process.
The new UOP molecular sieve is selected to ensure water, carbon dioxide, and hydrocarbon adsorption effect, lower regeneration temperature, energy savings, and consumption reduction. Rigorous design to provide air and molecular sieve contact time provides the adsorption effect. The new airflow distribution structure ensures uniform air distribution and avoids the tunnelling effect. Heat preservation materials are used for heat insulation of the heater barrel and some pipelines of the adsorber to reduce energy consumption. Heat preservation materials are used for heat insulation of the heater barrel and some pipelines of the adsorber to reduce energy consumption
(5) Distillation column
The fractionator is the core of the equipment, where the required products are made.
It is an excellent design and process simulation calculation optimization to ensure that the design parameters of advanced and reasonable
With the international advanced low-temperature rectification technology, the energy consumption index of our company can keep up with the international advanced level
Adopting vacuum brazing aluminium plate-fin heat exchangers has high heat transfer efficiency and a slight temperature difference, effectively reducing cooling loss and energy consumption. Design the structure and stress analysis to ensure the safety and reliability of the cold box
The cold box sealing air valve is installed, and the waste gas is used to inflate the hard box and cut off the wet air to ensure the insulation effect of the hard box reduces heat loss and further reduces energy consumption
(6)Turbo-expander
Turbine expanders can be divided into the gas bearing and oil bearing, small refrigerating capacity using gas bearing, and large refrigerating capacity using oil bearing.
The working wheel press is precision machined with an advanced five-axis CNC milling machine to ensure the machining accuracy of the impeller profile and high expansion efficiency. The rotor and bearing can be directly replaced from the average temperature end without picking up pearlescent sand, which is convenient for maintenance. The bearing expander adopts an adjustable nozzle to adjust cooling capacity. A double oil pump is set: One for use and one for backup, automatic switching use in operation（Oil bearing expander）
(7)Turbo-expander
Turbine expanders can be divided into gas-bearing and oil-bearing, small refrigerating capacity using gas bearing, and large refrigerating capacity using oil bearing.
The working wheel press is precision machined with an advanced five-axis CNC milling machine to ensure the machining accuracy of the impeller profile and high expansion efficiency. The rotor and bearing can be directly replaced from the average temperature end without the need to pick up pearlescent sand, which is convenient maintenance. The oil bearing expander adopts an adjustable nozzle to adjust cooling capacity. A double oil pump is set: One for use and one for backup, automatic switching use in operation（Oil bearing expander）
(8)Control system
Instrument control systems should be able to effectively monitor sets of air separation equipment production processes to ensure reliable running and convenient operation and maintenance. Adopt centralized monitoring control and the principle of combining in situ monitoring and control.
To adapt to the needs of the technological process, the instrument control system adopts Siemens PLC control system; the main process parameters trend display, records, historical records, control, alarm, print, tables, and flow chart of the picture show performed by Siemens PLC system.
The central control room uses a 23-inch colour LCD monitor and has a multifunction printer for operation print, alarm printing, and tabulation printing.
PLC completes expander and interlock protection systems of all kinds of pumps and motors. It can memorize, display, and alarm when the relevant process parameters are over the limit. The interlock protection will be according to the technological requirements, automatic start or stop, open or close the valve and manual operation can be achieved to open and stop the equipment.
Cryogenic Air Separation Plant installation:
