Large liquid nitrogen liquifier plant YPN-1670Y

On November 16, 2021, The liquefaction liquid nitrogen plant :YPN-1670Y was delivered to the customer in Feiyuan, Shandong province by Hangzhou UIG Company. The liquefaction capacity of this air separation equipment is 1670 kilograms per hour. The purity of liquid nitrogen products is 10 PPM and the oxygen content of liquid nitrogen products is 10 PPM. The liquefaction equipment adopts the customer’s original existing air compressor and the customer’s original existing medium pressure circulating nitrogen compressor. Two turbine expanders are used in the process, one of which is the positive flow expansion and the other is the reflux gas expansion, which makes full use of the expansion refrigeration of the ASU equipment, the liquifier equipment starts quickly and produces large amount of liquid. The factory uses the modular design concept to shorten the design cycle and ensure the supply cycle of the cryogenic equipment. The workshop workers adopted the large cold box and the overall assembly method, which shortened the manufacturing time of the factory. This is also the first set of large-scale liquefaction equipment of UIG that adopts medium pressure circulating nitrogen compressor and is equipped with refrigeration machine, with advanced process design. We use HYSYS software to optimize our process organize. We use autocad to draw the process flow diagram. We use the international brand product for our instrument control system. It ensures our plant to run stable and more reliable. We can make products at lower electrical power consumption. Below as the delivery photo: