- Offshore DNV Rack Industry Gas Cylinder Rack
- Offshore DNV Rack Cylinder Storage Rack Oxygen Cylinder Rack
- Made In China DNV Rack Cylinder Storage Rack Oxygen Cylinder Rack
- Made In China DNV Rack Cylinder Storage For Rack Cylinder Rack
- New Offshore Platform DNV Cylinder Rack Oxygen Gas Cylinder Rack
- Staxbond Offshore Container Bottle Rack for Oxygen Gas Cylinder
|Brand Name:||SEFIC-air separation plant||Place of Origin:||Shanghai, China||Model Number:||50L air separation plant|
|Certification:||TPED||After-sales Service Provided:||Overseas third-party support available||Warranty:||12 YEAR|
PACKED BY WOODEN BOX air separation plant
(1) ASU PLANT
(2) Introduction for ASU:
An air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases.
To achieve the low distillation temperatures an air separation unit requires a refrigeration cycle that operates by means of the Joule–Thomson effect, and the cold equipment has to be kept within an insulated enclosure (commonly called a "cold box"). The cooling of the gases requires a large amount of energy to make this refrigeration cycle work and is delivered by an air compressor. Modern ASUs use expansion turbines for cooling; the output of the expander helps drive the air compressor, for improved efficiency. The process consists of the following main 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 co-produced 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 1.2-1.3 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.
(4) ASU SPECIFCATION:
|AIR SEPARATION PLANT SPECIFICATIOIN TABLE|
Large amounts of oxygen are required for coal gasification projects; cryogenic plants producing 3000 tons/day are found in some projects. In steelmaking oxygen is required for the basic oxygen steelmaking. Large amounts of nitrogen with low oxygen impurities are used for inerting storage tanks of ships and tanks for petroleum products, or for protecting edible oil products from oxidation.
(6) Contact us for more details for ASU Plant, we provde design / Installation service.
- Eternal Industry Co., Ltd.
|Acetylene cylinder||Argon cylinder||CO2 cylinder||Cylinder Bundle|
|Gas Product||Helium cylinder||Nitrogen cylinder||Other Cylinders|
- Oxygen Gas Cylinder Storage Rack Offshore DNV Offshore Rack
- Newly TPED Gas plant used transportation Rack frame
- Industry Gas Cylinder with inlet and outlet valve DNV Rack frame Gas Cylinder Rack
- pure refrigerant gas R142b for sale
- R 22 replacement
- TRIFLUORO IODOETHANE C2H2F3I CAS:353-83-3
- fluoro-iodo-methane CH2FI CAS:373-53-5
- METHYL FLUORIDE CH3F CAS:593-53-3 R41
- 250kg packing cleaning agent R141b
- Pure refrigerant gas R125 for sale
- R507 refrigerant gas with high quality 13.6kg/30LB
- High purity R408a refrigerant gas
- Mixed refrigerant gas R401a
- Environment-friendly refrigerant R134a with high purity
- 3000NM3/H ASU Air Gas Separation Plant Oxygen Plant
- 750NM3/H ASU Air Gas Separation Plant Oxygen Plant
- ASU Air Gas Separation Plant Oxygen Plant
- ASU Air Gas Separation Plant Medical Oxygen Plant
- ASU Air Gas Separation Plant Oxygen Plant Manufacturer
- ASU Air Gas Separation Plant Liquid Nitrogen Plant
- ASU Air Gas Separation Plant Air Separation Plant
- ASU Air Gas Separation Plant Cryogenic Air Separation Plant
- ASU Air Gas Separation Plant Oxygen generating Plant
- acetylene production plant
- air separation plant
- brown gas generator
- hho gas generator
- hho generator
- hho generator car
- hydrogen electrolyzer
- hydrogen fuel cell generator
- hydrogen generation systems
- hydrogen generator
- hydrogen generator electrolyzer
- hydrogen generator for car
- liquid nitrogen generator
- liquid nitrogen plant
- coal gasifier
- pem electrolyzer