Skid-mounted ASU
Date: 2024-12-31
Skid-Mounted Air Separation Units (ASU)
A skid-mounted Air Separation Unit (ASU) is a compact, pre-engineered, and modular system designed to separate atmospheric air into its primary components: nitrogen, oxygen, and argon. These units are typically assembled on a skid or frame, making them highly portable and easily transportable to various locations.
Key Advantages of Skid-Mounted ASUs:
• Rapid Deployment: Shorter installation and commissioning times compared to traditional, large-scale ASUs.
• Flexibility: Can be easily relocated to meet changing demands or supply different locations.
• Modular Design: Customizable to meet specific production requirements and site conditions.
• Reduced Site Work: Minimal site preparation and infrastructure required, simplifying the installation process.
• Lower Initial Investment: Often more cost-effective than traditional, large-scale ASUs, especially for smaller-scale applications.
Applications of Skid-Mounted ASUs:
• Industrial Gas Supply: Providing oxygen, nitrogen, and argon for various industrial processes, including steelmaking, glass manufacturing, and chemical production.
• Medical Gas Supply: Delivering medical-grade oxygen to hospitals and healthcare facilities.
• Remote and Offshore Operations: Supplying gas to remote locations, such as oil and gas platforms or mining sites.
• Emergency Response: Providing emergency oxygen and nitrogen supplies for disaster relief and other critical situations.
Skid-mounted ASUs offer a flexible and efficient solution for a wide range of applications, making them a valuable asset for industries that require reliable and on-demand gas supplies.
Our skid-mounted ASU, featuring a distinctive design and advanced ripening processing technology, offers easy installation, high efficiency, and energy savings. Equipped with a screw air compressor (fan cooled), air pre-cooling system (fan cooled), and a skid-mounted purification system, our ASU ensures optimal performance. Bray switch butterfly valves guarantee leak-proof operation for 200,000 cycles. The skid-mounted instrument and electrical control system, along with polished stainless steel instrument device pipes, enhance reliability and precision. Preassembled bridge supports and connected cables simplify installation, while human safety ladders with security fences facilitate maintenance. A regeneration heater with dry burning protection (skid mounted) and high-quality mineral wool-insulated pipes further optimize the system. Cryogenic liquid pumps and embedded expand turbines, including one spare, ensure continuous operation. The integrated oxygen or nitrogen filling station and prefabricated pipes streamline installation and commissioning.
• Screw air compressor (fan cooling)
• Air pre-cooling system (fan cooling)
• Purification system (skid mounted)
• Adopt Bray switch butterfly valve to ensure no leakage with 200,000 times
• Instrument and electrical control system (skid mounted)
• Polished stainless steel for instrument device pipes
• Preassembled bridge support and connected cable
• Human safety ladder alone with security fence is convenient for maintenance
• Regeneration heater with dry burning protection (skid mounted)
• Adopt high quality mineral wool as thermal insulation for pipes have preassembled
• Cryogenic liquid pump
• Embedded expand turbine with one use and one standby
• Oxygen or nitrogen filling station
• Prefabricated pipes install easily and efficiently
FAQ
What are the methods of air separation?
Cryogenic Distillation: This is the most common method. Air is cooled to extremely low temperatures, causing it to liquefy. The liquid air is then fractionally distilled, taking advantage of the slightly different boiling points of oxygen and nitrogen, allowing them to be separated. Adsorption: This method utilizes materials like zeolites (molecular sieves) that selectively adsorb one gas component while allowing others to pass through. By cycling the adsorption and desorption processes, pure streams of oxygen or nitrogen can be obtained. Membrane Separation: This method employs specialized membranes that allow certain gases to pass through more readily than others. Oxygen molecules tend to permeate through these membranes faster than nitrogen molecules, enabling their separation. These methods are used to produce a variety of industrial gases with diverse applications in various sectors.
What are core equipments of cryogenic distillation air separation?
Air Compressor: This component compresses atmospheric air to the necessary pressure levels to initiate the liquefaction process. Heat Exchangers: These vital components facilitate efficient heat transfer within the system. They serve to pre-cool the compressed air, recover valuable cold energy from the process streams, and maintain the requisite low temperatures throughout the system. Molecular Sieve Beds: These beds are employed to meticulously remove impurities such as water vapor and carbon dioxide from the compressed air prior to its entry into the main cryogenic section. These impurities have the potential to solidify at the extremely low temperatures encountered within the process, potentially leading to obstructions and operational disruptions. Distillation Columns: These constitute the heart of the air separation process. They incorporate trays or packing materials that effectively facilitate the separation of oxygen and nitrogen based on their inherent differences in boiling points. Expanders: These devices ingeniously convert the pressure energy inherent within the compressed air into useful work, contributing significantly to the overall refrigeration cycle and consequently reducing energy consumption.
What is oxygen extraction rate of air separation?
Oxygen Extraction Rate: The ratio of the mass of oxygen produced by the air separation unit (ASU) to the mass of oxygen present in the incoming air stream. Key Factors Influencing Oxygen Extraction Rate: ASU Design and Technology: The efficiency of the distillation columns, heat exchangers, and other components directly impacts the amount of oxygen that can be recovered. Advanced technologies like high-efficiency expanders and improved heat exchanger designs can significantly enhance extraction rates. Operating Conditions: Factors like operating pressure, temperature, and flow rates can influence the separation efficiency. Air Quality: The presence of impurities in the incoming air stream can affect the performance of the ASU and reduce oxygen extraction. Modern cryogenic air separation units typically achieve oxygen extraction rates of 95-98%.
What are the air quality requirements for an air separation unit?
Moisture Content: Low moisture levels are crucial: Water vapor can freeze within the cryogenic system, causing blockages and operational disruptions. Efficient dryers: ASUs typically incorporate drying systems, such as molecular sieve beds, to remove moisture from the incoming air. Particulate Matter: Minimizing particulates: Dust, dirt, and other particulates can damage delicate equipment like valves and bearings within the ASU. Filtration systems: High-efficiency filters are used to remove particulate matter from the incoming air stream. Hydrocarbons: Hydrocarbons can contaminate products: Hydrocarbons can condense within the cryogenic system, potentially contaminating the final oxygen and nitrogen products. Hydrocarbon removal: Catalytic converters or other methods may be used to remove hydrocarbons from the air stream. Other Contaminants: Trace gases: Depending on the location and source of the intake air, trace gases such as sulfur dioxide, nitrogen oxides, and carbon monoxide may be present. Impact on operations: These contaminants can affect the efficiency of the separation process and may require additional treatment steps. Temperature and Pressure: Consistent conditions: While not directly related to air quality, consistent ambient temperature and pressure conditions are important for optimal ASU operation. Meeting these air quality requirements is essential for the reliable and efficient operation of an ASU, ensuring the production of high-purity oxygen and nitrogen products.
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