O2/ N2 Liquid and Gas ASU Production Plant

Product Description

Process Description

The air passes through the air filter, compresses and cools, and then enters the purifier to remove impurities such as water, carbon dioxide, and acetylene in the air. The raw material air adsorbed by molecular sieve is pressurized by the supercharger all the way, and the cooler enters the main heat exchanger after cooling. Part of the gas is extracted from the middle of the main heat exchanger and enters the expander. After the other air enters the main heat exchanger, it is cooled to the saturation temperature by the reflux gas and enters the lower tower with a small amount of liquid. After the air is preliminarily rectified in the lower tower, about 36%~38% oxygen-enriched liquid air is obtained in the lower tower, and liquid nitrogen is obtained at the top of the lower tower. On the upper tower, after further rectification in the upper tower, oxygen with a purity of 99.6% is obtained at the bottom of the upper tower. The oxygen of this product is reheated by the main heat exchanger and then exits the cold box, enters the oxygen compressor for pressurization, and is sent to the user. Nitrogen gas of ≤10PPmO2 is obtained from the top of the upper tower, which is reheated by the cooler and the main heat exchanger, and then exits the cold box, enters the nitrogen compressor for pressurization, and is sent to the user. Sewage nitrogen is drawn from the top of the upper tower, reheated by the cooler and the main heat exchanger, and then discharged from the cold box. After being heated by the regeneration heater, it is used as the molecular sieve regeneration gas.

Main Equipment of  Cryogenic Air Separation Plant:

Special Features of ASU Plant:

• A few of the latest technological features incorporated into the Oxygen & Nitrogen plants are listed below.
• Purity of Oxygen produced from all plants is minimum 99.7% and Nitrogen Purity can be available up to 1-10 PPM (Depending upon requirement of the customer).
• All plants use "Oil free" rotary screw /centrifugal oil compressor working between 6-13 BAR.
• All plants incorporate Aluminum Brazed exchangers and packed columns for high efficiency.
• Turbo expanders (GAS Bearing) for trouble free operation.
• All plants can supplied with automatic PLC control.
• Engineering support along with complete quality control is provided by our company.
• We provide qualified engineers for Supervision, Installation and start up of all our plants as well as training of manpower at customers' site.
• Very low power consumption with proven performance and virtually easy maintenance required for the machines.
• 100% reliability for oxygen gas quality for industrial & hospital use.

Product Advantages

1. The compact and modular design of all systems ensures easy transportation and cheaper installation, fast project delivery time seamlessly connects with the customer team, minimizes project costs and optimizes project schedules.
2. Fully automated system for simple and reliable operation.
3. Guaranteed availablity of high-purity industrial gases.
4. Guaranteed by the availability of product in liquid phase to be stored for use during any maintenance operations.
5. Low energy consumption, simple installation and maintenance
6. Short time delivery, seamless operation with one team together with the clients to minimize project cost and optimize the proposal.

Whether you are producing steel or nonferrous metals, traditional petrochemicals, or running the most advanced gasification or oxy-fuel process for your clean energy application, your air separation plant plays a significant role in your operations. Our company has the technology, experience, and resources necessary to design, engineer, construct, and operate a cost-effective gas supply system for your specific application.