High Purity Oxygen Nitrogen Production ASU Plant

High Purity Oxygen Nitrogen Production ASU Plant

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Basic Info

Payment Type:	T/T
Incoterm:	FOB
Transportation:	Ocean,Land,Air

Product Description

Product Description

Cryogenic air separation oxygen and nitrogen plant which obtain oxygen and nitrogen from liquid air at low temperature by difference of each component boiling point. Air separation plants and cryogenic air separation process. Air separation equipment uses air as raw material, converts air into liquid state by means of compression cycle and deep freezing, and then gradually separates and produces oxygen from liquid air through rectification. The air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases. The most common method for air separation is cryogenic distillation. Cryogenic air separation plants are built to provide nitrogen or oxygen and often co-produce argon. It uses mature cryogenic rectification technology. Our factory developed and designed a full-low pressure molecular sieve to purify the air and turbo expander refrigeration process to further reduce the energy consumption of small and medium sized air separation plants.

Process Description

The air passes through the air filter, enters the air compressor, compresses to 0.7mpa in the compressor, and then enters the purifier after cooling, where the impurities such as water, carbon dioxide and acetylene in the air are removed. The purified air enters the heat exchanger for heat exchange with the backflow polluted nitrogen. A part of the gas is pumped into the turbine expander through the outlet of the heat exchanger, and the expansion provides a cooling source for the whole set of devices. The other gases continue to cool through the second heat exchanger and then enter the rectifying tower, where they are separated by oxygen and nitrogen. Finally, qualified liquid nitrogen is obtained from the top of the rectifying tower. After decompression by the throttle valve, the liquid air at the bottom enters the condensing evaporator at the top of the tower and the nitrogen heat exchange at the top of the rectifying tower, and then passes through the cooler, the second heat exchanger and the main heat exchanger cooling box as the regenerative purifier.

Cryogenic Air Separation Flow Chart

Cryogenic oxygen air separation unit(KDO)
Name	Oxygen	Pressure	20MPaG(adjustable)
Purity	≥99.6%	Operation Cycle	12months
Start time	~24hours	Single column, internal compression process

Cryogenic oxygen&nitrogen air separation unit(KDON)
Name	Oxygen&Nitrogen gas	Pressure	20MpaG(adjustable)
Oxygen purity	≥99.6%	Nitrogen purity	≥99.99%
Start pressure	1.0MPaG	Double column, external compression process

Model	Unit	KPDON -50-50	KPDON -80-160	KPDON -180-300	KPDON -260-500	KPDON -350-700	KPDON -550-1000	KPDON -750-1500	KPDONAR -1200-3000-30Y
Oxygen production	Nm³/h	50	80	180	260	350	550	750	1200
Oxygen purity	%O₂	≥99.6	≥99.6	≥99.6	≥99.6	≥99.6	≥99.6	≥99.6	≥99.6
Nitrogen production	Nm³/h	50	160	300	500	700	1000	1500	2000
Nitrogen purity	PpmO₂	≤10	≤10	≤10	≤10	≤10	≤10	≤10	≤5
Liquid argon production	Nm³/h	-	-	-	-	-	-	-	30
Liquid argon purity	PpmO₂ +Ppmn₂	-	-	-	-	-	-	-	≤1.5PpmO₂+3PpmN₂
Liquid argon pressure	Mpa.A	-	-	-	-	-	-	-	0.2
Unit consumption	Kwh/Nm³O₂	≤1.3	≤0.85	≤0.68	≤0.68	≤0.65	≤0.65	≤0.63	≤0.55
Device occupied area	m²	145	150	160	180	250	420	450	800

Main Equipment of Cryogenic Air Separation Plant:

Self-cleaning suction air filter; Air turbine compressor unit; Air precooling system; Molecular sieve purification system; Distillation column system; Turbo expander system; Refrigerating unit; Product liquid storage system; Gas cylinders, etc

Real photo of purification compression system workshop-3

purification system-1

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.

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Related Keywords

KDON-500-1000 Oxygen Nitrogen Plant , Industrial Medical Mini Oxygen Nitrogen Plant , 99.6% Oxygen Generator Cryogenic ASU