The delivery process of Air Separation Nitrogen unit is divided into four key stages, each requiring meticulous equipment preparation and tuning. This article will provide a detailed overview of these stages and supplement the involved critical equipment with professional knowledge to better understand their roles in the air separation system.
Stage One: Backup Systems
In the third month after confirming the contract and receiving the deposit, we commence the delivery of backup systems for cryogenic air separation nitrogen equipment. The backup systems include liquid nitrogen and liquid oxygen storage tanks and vaporization units.
Liquid nitrogen and liquid oxygen storage tanks are containers used to store these gases in liquid form, typically employing a double-layer vacuum-insulated structure to maintain the low-temperature state of the stored media. Vaporization units are devices used to convert liquid nitrogen and oxygen into gas form, usually employing heating methods to raise the temperature of the liquid medium above its saturation vapor pressure, thereby converting it into gas.
Stage Two: Power Systems
In the fifth month after confirming the contract and receiving the deposit, we begin delivering power systems, including air compressors, air filters, and precooling systems.
Air compressors are devices that compress gas from the atmosphere to the desired pressure, providing compressed air for the air separation system. During the compression process, air filters are required to remove impurities and solid particles from the air to protect the normal operation of subsequent equipment. The precooling system is used to reduce the temperature of compressed air for subsequent separation and refrigeration processes.
Stage Three: Cold Boxes and Remaining Equipment
Six months later, we commence the delivery of cold boxes and remaining equipment for air separation nitrogen equipment, including turboexpanders and fractionation towers, oxygen compressor units, instrument and electrical control systems, etc.
Turboexpanders are devices that expand high-pressure gas to low pressure, achieving a cooling effect on the gas through the expansion process. Fractionation towers are used to separate mixed gases, separating gases such as nitrogen and oxygen through the distillation process according to their components to obtain the desired pure gas.
Stage Four: Installation and Commissioning
Upon completion of the delivery of all equipment, we will carry out a one-month installation and commissioning process.
Through the commissioning by our experienced after-sales engineers with thirty years of experience, we ensure that the equipment can operate normally and achieve the expected performance indicators.
The above are the four stages of delivery for cryogenic air separation nitrogen equipment. Cryogenic air separation projects may face various challenges during the processes of design, procurement, construction, and operation customization. However, Sheng Er has extensive experience in complete air separation equipment and can meet the needs of customers’ EPC contracts, communicating with customers and synchronizing in real-time at each delivery stage.
English 
Russian