air separation unit process flow diagram in ukraine

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21 Process flow diagram description The typical block flow diagram BFD of air separation units currently operating worldwide is reported in Figure 1 It consists of three main sections compression refrigeration and separation The first includes the main air compressor two water refrigerators and the molecular sieves not reported in

the top of the column This process is continued as long as is required to reach the desired level of purity Rare gas recovery With a view to obtaining the rare gases the separation column of the air separation unit is equipped with additional aggregates for raw argon a neonhelium mixture and a kryptonxenon mixture These mixtures

13 Air Separation Unit ASU and Liquefaction ASU uses multicolumn cryogenic distillation process to produce gaseous oxygen and nitrogen at above atmospheric pressure and near ambient temperature The gas liquefaction is a process to form liquid from a gas through compression and cooling

There are two primary configurations of the air separation process See Figure 1 In the “GOX process” oxygen is taken as a vapor from the bottom of the low pressure column and warmed

Air separation is the most common process used to extract one or all of the main constituents of atmospheric air The three main components are Nitrogen 781 Oxygen 209 and Argon 9 The remaining gases in the air are in trace amounts and normally not recovered

Cryogenic process of Air Separation Dry air contains by volume 7808 of nitrogen 2095 of oxygen and 093 of argon along with traces of a number of other gases Ambient air may contain varying amount of water vapor depending upon humidity and other gases produced by natural processes and human activities

Process Description Figure 1 shows a BFD of the overall process Unit 100 Figure 2 shows a PFD for the cryogenic distillation of air Unit 100 This process was modeled after the Linde Double Column 1 In the proposed design a twostage centrifugal compressor with interstage cooling is used to compress air to 9 atm The air

Typical PSA Process Flow Air intake filter and Compressor – Compressed air is required with all PSA nitrogen generators The discharge pressure of the compressor is typically between 100125 psig 6986 barg this air can be used to feed the PSA

first air separation plant initiated the development of the cryogenic industry Today several hundred engineers and specialists work at Linde for the worldwide sale and contract execution of plants that recover the air constituents oxygen and nitrogen as well as various rare gases Over 3000 air separation plants in 80 countries – 500 of

Air Products Air Separation Plants˜Unique Technology Unparalleled Experience 1 Atmospheric air is compressed and driven through the system by a series of air compressors While this image shows electricallydriven compressors many of the larger ASUs have steamdriven compression