External Liquefaction ASU
Your Professional External Liquefaction ASU Supplier
Suzhou Doer Gas ＆Chemical Equipment Co., Ltd. Was established in 2009 and is located in Xiangcheng District, Suzhou. It is a high-tech enterprise integrating R&D, design, manufacture, complete engineering, industrial services, and investment operations. The company has a registered capital of 100 million yuan, has 6 subsidiaries, two production bases with a total area of about 135,000 square meters, and a total number more than 400 employees.
Our Product
Large Scale Atmospheric Cryogenic Storage Tank, Vacuum Cryogenic Liquid Storage, Cryogenic Liquid Transportation Equipment, LNG Marine Equipment, Turn-key project.
Production Market
Suzhou Doer Gas ＆ Chemical Equipment Co., Ltd. is a comprehensive solution provider and service provider that integrates low-temperature technology research and development, design, equipment manufacturing, engineering general contracting, industrial services, and investment and operation.
Production Equipment
Electric single beam crane, bridge crane, Laser cutting machine, Inverter DC arc welding machine.
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![Oxygen & Nitrogen Liquefier]()
Oxygen & Nitrogen LiquefierFunction: Liquefie and store gaseous oxygen, nitrogen, and argon.read more
Technology: medium pressure cycle single expansion process, medium pressure cycle single expansion + air chiller process,...
Oxygen & Nitrogen Liquefier
Nitrogen Liquifiers provide sub-cooled liquid nitrogen from gaseous nitrogen feed gas for the many applications that use liquid nitrogen. Our Nitrogen Liquifiers are designed to provide you with liquid nitrogen from any clean and dry gaseous nitrogen source, typically from the overhead nitrogen stream from an air separation plant (ASU) that would otherwise be vented. Whatever your application or industry, our nitrogen liquifiers have the versatility needed to adapt to your specific needs, such as liquefying an oxygen gas stream or simultaneous liquefaction of oxygen and nitrogen gas streams.
Product Parameters
|
Products |
Capacity (Nm3/h) |
Purity (vol) |
Pressure out of cold box MPa (G) |
Temp. out of cold box(℃) |
|
LOX |
1000-30000 |
Raw gas purity |
≥0.02 |
Supercooled |
|
LIN |
1000-30000 |
Raw gas purity |
≥0.02 |
Supercooled |
|
LAr |
1000-30000 |
Raw gas purity |
≥0.02 |
Supercooled |
Working Principle
The raw gas with a certain pressure is liquefied by the cooling capacity generated by the expansion of the medium-pressure circulating gas from the circulating booster, and the expanded circulating gas is de-circulated to the booster to complete the cycle.
|
No |
MAIN PART |
FUNCTION |
|
1 |
Circulating booster system |
Compressed the circulating air to required pressure to provide a medium pressure expansion air source for ASU. |
|
2 |
Distillation System (Cold Box) |
The raw gas is heat exchanged with the expander low-temperature gas and liquefied. |
|
3 |
Storage System |
Store the separated liquid products, such as liquid oxygen, liquid nitrogen, and liquid argon. |
|
4 |
Instrument Control System |
The entire air separation unit is equipped with a central control system to monitor, control and interlock the process parameters of the entire air separation unit (circulating booster, turbine expander, distillation system, liquid storage system). The own control system for machine unit communicates with the air separation unit control system by Modbus, so that its operation status can be monitored at the operating station in the central control room. |
|
5 |
Electrical Control System |
The electrical control system provides power for the electrical equipment of the air separation unit. A reasonable and optimized power supply and distribution system design can not only reduce investment and loss, but also be the cornerstone and guarantee for the reliable operation of the air separation unit. |
Simplified on-site logistics and lower CAPEX thanks to modular design.
Fast-track equipment fabrication and delivery.
Optimizes CAPEX or OPEX.
Oxygen & Nitrogen Liquefier
Function
Liquefie and store gaseous oxygen, nitrogen, and argon.
Technology
Medium pressure cycle single expansion process, medium pressure cycle single expansion + air chiller process, medium pressure cycle double expansion (high and low temperature expansion refrigeration) process.
Working principle
The cooling capacity generated by expansion is used to liquefy the feed gas under a certain pressure.
Certificate
FAQ
We're well-known as one of the leading external liquefaction asu manufacturers in China. If you're going to wholesale high quality external liquefaction asu made in China, welcome to get quotation from our factory.