Cryogenic ASU Oxygen Cylinder Filling Plant

Cryogenic Air Separation Oxygen Plant

Process Description

The internal compression process flow is shown in the figure. After the raw air is filtered by the air filter to remove dust and mechanical impurities, it is pressurized by the air compressor and enters the air cooling tower for cleaning and pre-cooling. After pre-cooling, it enters the alternately used molecular sieve adsorber to remove moisture, carbon dioxide, acetylene, etc. impurities. The purified air is divided into two strands: one enters the main heat exchanger, exchanges heat with the reflux gas, and directly enters the lower column rectification after heat exchange; the other enters the lower column rectification after being pressurized and cooled. distillation. After the air is preliminarily rectified in the lower tower, liquid air is obtained at the bottom of the lower tower. The liquid air and pure liquid nitrogen extracted from the lower tower are subcooled by the cooler and then enter the corresponding parts of the upper tower. The obtained pure liquid oxygen is pressurized to the required pressure by the liquid oxygen pump, and then reheated by the main heat exchanger, out of the cold box, and transported to the pipe network as product oxygen. The liquid oxygen product is drawn from the bottom of the main cold and enters the liquid oxygen storage tank.  The dirty nitrogen drawn from the upper part of the upper tower is reheated by the main heat exchanger and then exits the cold box, and enters the molecular sieve purification system as the regeneration gas of the molecular sieve for heating and cold blowing.

Equipment Adavantages

1. The overall skid-mounted direct connection structure and high pressure hose connection make it unnecessary for users to invest in connecting pipelines and valves between devices, saving your investment cost.
2. The user only needs to make the equipment workshop and the ground and lifting tools in the workshop, without preparing other installation materials and tools.
3. Small size and low footprint.
4. The whole set of equipment has no foundation installation, stable operation, simple operation and convenient maintenance.
5. Since the equipment adopts internal compression process, the maintenance cost in the later period of the equipment can be minimized to improve the work efficiency.
6. All the single use of the most advanced technology, greatly reduce the energy consumption, save the electricity bill.
7. The cooling mode of the equipment is air cooling, so users do not need to build cooling pools, thus saving capital expenditure.
8. The equipment installation and debugging period is short, and all the work can be completed in about one month.
9. At present, the equipment has been sold to Syria, Sudan, Nigeria and other countries.
10. The oxygen equipment produced by our company is sold to more than 40 countries and regions, and the installation and debugging personnel have rich experience in overseas installation.

Cryogenic liquid oxygen plant has many spare parts and equipment, long process flow and large floor space. We need to design an optimization plan according to specific needs. If you have any needs, please contact me, my tel/whatsapp: 008616763286270.

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