Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant

Product Details
Customization: Available
Type: Air Separation Plant
Object: Steel Mill, Electrical Products, Welding
Manufacturer/Factory & Trading Company
Gold Member Since 2015

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Number of Employees
13
Year of Establishment
2014-08-05
  • Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
  • Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
  • Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
  • Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
  • Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
  • Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
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Basic Info.

Separation Mode
Rectification
Operating Type
Continuous Type
Installation
Vertical
Centrifuge Type
Tube Centrifuge
Distillation Equipment Type
Steam Distillation Equipment
Extraction Tower Type
Fractionating Column
Pressure
Low Pressure
Condition
New
Gas Source
Gas
Air Separation
Cryogenic
Production Purity
99.999
Voltage
380 V/50 Hz
Lox Flow
200y-80000y
Transport Package
Export Packing, Wooden Packing, Plastic Packing
Specification
ASME, GB, PED, CE
Trademark
CYY
Origin
China
HS Code
8413709990
Production Capacity
500PCS Per Year

Product Description

Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant



 Product Description:

 

AIR SEPARATION PLANT SPECIFICATIOIN TABLE
MODEL CONTENTS KDON-200Y/200Y KDON-500Y/500Y KDON-1000Y/1000Y KDON-1500Y/1500Y KDON-2000Y/2000Y KDON-3000Y/3000Y KDON-4500Y/2000Y
*LOX flow Nm3/h 200 500 1000 1500 2000 3000 4500
LOX purity %(O2) 99.6 99.6 99.6 99.6 99.6 99.6 99.6
*LIN flow Nm3/h 200 500 1000 1500 2000 3000 2000
LIN purity %(N2) 99.999 99.999 99.999 99.999 99.999 99.999 99.999
*LAr flow Nm3/h - - 25 40 55 95 145
LAr flow %(Ar) - - 99.999 99.999 99.999 99.999 99.999
Star-up time (h) 8~12 ~20 ~24 ~24 ~24 ~24 ~24
Operating period (Y) ≥1 ≥1 ≥2 ≥2 ≥2 ≥2 ≥2

Cryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant
Cryogenic Asu Liquid Oxygen Nitrogen Air Separation PlantCryogenic Asu Liquid Oxygen Nitrogen Air Separation Plant

The ASU Plant produce Liquid Gas as the following Seven Steps:


1.Before compression the air is pre-filtered of dust.
2.Air is compressed where the final delivery pressure is determined by recoveries and the fluid state (gas or liquid) of the products. Typical pressures range between 5 and 10 bar gauge. The air stream may also be compressed to different pressures to enhance the efficiency of the ASU. During compression water is condensed out in inter-stage coolers.
3.The process air is generally passed through a molecular sieve bed, which removes any remaining water vapour, as well as carbon dioxide, which would freeze and plug the cryogenic equipment. Molecular sieves are often designed to remove any gaseous hydrocarbons from the air, since these can be a problem in the subsequent air distillation that could lead to explosions. The molecular sieves bed must be regenerated. This is done by installing multiple units operating in alternating mode and using the dry coproduced waste gas to desorb the water.
4.Process air is passed through an integrated heat exchanger (usually a plate fin heat exchanger) and cooled against product (and waste) cryogenic streams. Part of the air liquefies to form a liquid that is enriched in oxygen. The remaining gas is richer in nitrogen and is distilled to almost pure nitrogen (typically < 1ppm) in a high pressure (HP) distillation column. The condenser of this column requires refrigeration which is obtained from expanding the more oxygen rich stream further across a valve or through an Expander, (a reverse compressor).
5 Alternatively the condenser may be cooled by interchanging heat with a re boiler in a low pressure (LP) distillation column (operating at 1.21.3 bar abs. ) when the ASU is producing pure oxygen. To minimize the compression cost the combined condenser/reboiler of the HP/LP columns must operate with a temperature difference of only 1-2 degrees Kelvin, requiring plate fin brazed aluminum heat exchangers. Typical oxygen purities range in from 97.5% to 99.5% and influences the maximum recovery of oxygen.The refrigeration required for producing liquid products is obtained using the JT effect in an expander which feeds compressed air directly to the low pressure column. Hence, a certain part of the air is not to be separated and must leave the low pressure column as a waste stream from its upper section.
6 Because the boiling point of argon (87.3 K at standard conditions) lies between that of oxygen (90.2 K) and nitrogen (77.4 K), argon builds up in the lower section of the low pressure column. When argon is produced, a vapor side draw is taken from the low pressure
Column where the argon concentration is highest. It is sent to another column rectifying the Argon to the desired purity from which liquid is returned to the same location in the LP column. Use of modern structured packings which have very low pressure drops enable argon purities of less than 1 ppm. Though argon is present in less to 1% of the incoming, the air argon column requires a significant amount of energy due to the high reflux ratio required (about 30) in the Argon column. Cooling of the argon column can be supplied from cold expanded rich liquid or by liquid nitrogen.
7 Finally the products produced in gas form are warmed against the incoming air to ambient temperatures. This requires a carefully crafted heat integration that must allow for robustness against disturbances (due to switch over of the molecular sieve beds). It may also require additional external refrigeration during start-up.

Contact:

Tel:+86 15397130007
 

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