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Air is a uniform multi-component mixture gas. Within a height of 10 kilometers above the ground, its main components such as nitrogen, oxygen, and argon remain almost constant. There are also small amounts of impurities, for example: dust, CO₂, water vapor, SO₂, CH₄, C₂H₆, C₃H₈ and other hydrocarbons, which vary with the environment. In addition, there are trace amounts of H₂, ozone, N₂O, etc. As altitude increases, the oxygen content in the air decreases. The content of impurities and altitude are the main factors to be considered in design

  • When seeking consultation on the technical solutions of air separation equipment, clients are required to provide at least the following details：
  • The concentration of impurities in the air，Primarily consist ofCO2、SO2、CH4、C2H2And the total carbon content；
  • Natural climatic conditions such as altitude, ambient air temperature and humidity, wind force, and lightning；
  • Geotechnical engineering conditions including geology, transportation, etc.; utility engineering conditions such as water quality and power source；
  • Product requirements, encompassing the production volume, purity, gas supply pressure, and utilization scenarios of gaseous products and liquid products；
  • Configuration requirements, such as air compressors, nitrogen compressors, oxygen compressors, booster turbines, plate heat exchangers, packings, chillers, vaporizers, storage tanks, liquid pumps, industrial valves, instrumentation and electrical systems, etc. In the absence of specific requirements, the configuration will be determined according to past experience；
  • Upon receipt of the order, we will carry out a series of services, encompassing design, manufacturing, system integration, installation, and commissioning。
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The product series of air separation plants

The product series of large and medium-scale air separation units

Model number KDON-4500/
4500/120		 KDON-6500/
6500/180		 KDON-10000/
10000/320		 KDON-15000/
15000/500		 KDON-21000/
21000/750		 KDON-30000/
30000/1000
Oxygen production capacityNm3/h 4500 6500 10000 15000 21000 30000
Liquid oxygen production capacityNm3/h 100 100 150 300 500 600
The pressure of oxygenMPaA 2.5~3.0 2.5~3.0 2.5~3.0 2.5~3.0 2.3~2.8 2.5~2.8
Nitrogen production capacityNm3/h 4500~1万 6500~1万 10000~2万 15000~3万 21000~4万 30000~6万
The pressure of nitrogenMPaA 1.6~2.5 1.6~2.5 1.6~2.5 1.6~2.5 1.6~2.5 1.6~2.5
Argon production capacityNm3/h 120 180 320 500 750 1000
Specific consumptionkW·h/Nm3O2 0.505 0.47 0.45 0.43 0.425 0.42
  1. The purity of oxygen:≥99.6%O2，The purity of nitrogen:≤10ppmO2，The purity of argon：≤2ppmO2+≤3ppmN2。
  2. The production volumes of oxygen and nitrogen are0℃，0.101325MPaAThe gas quantity under [specified] conditions。
  3. The unit oxygen - making energy consumption is determined based on the designed value of the air volume entering the column。
  4. The liquid products serve as a reference for model selection. The quantity of liquid products can be adjusted between liquid oxygen and liquid nitrogen. When the quantity of liquid products deviates from the above - mentioned values, the unit power consumption index shall comply with the stipulations in the contract。
  5. In the event that the nitrogen purity and the oxygen - nitrogen ratio do not meet the specifications presented in the table, the requirements stipulated in the contract shall be adhered to。
  6. For air separation equipment, it is advisable to adopt the product series. Alternatively, customization can be carried out in accordance with the specific requirements of customers。
  7. The process configuration employs a molecular sieve purification system, a booster turbine expander, and an external compression process. Alternatively, an internal compression process can be implemented in accordance with the customers' specifications。

Products of all - liquid air separation plants

Model number The production rate of liquid oxygenNm3/h The production rate of liquid nitrogenNm3/h The production rate of liquid argonNm3/h Dimensions of the cold boxmm
KDON-310Y 250 50 – 1800X2000X15000
KDON-1000Y 800 50 – 2500X3000X18500
KDONAr-1690Y/540Y/48Y 1350 350 48 9000X3000X47500
KDONAr-3750Y/4630Y/100Y 3000 3000 100 10000X3300X48000
KDONAr-5000Y/2470Y/135Y 4000 1600 135 10000X3600X48000
KDONAr-6500Y/6250Y/190Y 5200 4000 150 4500X3800X14000
6000X5500X56000
  1. The purity of oxygen:≥99.6%O2，The purity of nitrogen:≤10ppmO2，The purity of argon：≤2ppmO2+≤3ppmN2。
  2. The production yields of liquid oxygen, liquid nitrogen, and liquid argon are0℃，0.101325MPaAThe gas quantity under [specified] conditions，In the model designation, “Y” represents the liquid volume in “liters”。
  3. The quantity of liquid products serves as a reference for model selection. The quantity of liquid products can be adjusted between liquid nitrogen and liquid oxygen. The unit energy consumption indicator shall comply with the stipulations in the contract。
  4. In cases where the nitrogen purity and the oxygen - nitrogen ratio deviate from the specifications presented in the table, the stipulations of the contract shall be adhered to。
  5. The process configuration utilizes molecular sieve purification. For plants with a capacity of less than 50 T/D (tons per day), the liquefaction process incorporates an expander and a cryogenic chiller. For plants with a capacity exceeding 50 T/D, the liquefaction process adopts a high - and low - temperature dual - expander liquefaction scheme。
  6. Given the relatively high energy consumption of all - liquid products, it is advisable to select imported feed gas compressors, recycle gas compressors, and imported booster expanders。

Product series of complete sets of high - purity nitrogen equipment

Model number KDN-400 KDN-800 KDN-1500 KDN-2000 KDN-3000 KDN-6000
Nitrogen production capacityNm3/h 400 800 1500 2000 3000 6000
The purity of nitrogen gasppmO2 ≤2 ≤2 ≤2 ≤2 ≤2 ≤2
Production capacity of liquid nitrogenNm3/h 15 30 150 150 250 450
The pressure of nitrogen gas MPaA 0.2~0.1 0.2~0.1 0.2~0.1 0.2~0.1 0.2~0.1 0.2~0.1
Specific consumptionkW·h/Nm3N2 0.42 0.4 0.38 0.36 0.34 0.32
Dimensions of the cold boxmm 2200x
2200x
12500		 2200x
2400x
13500		 2400x
3000x
15000		 2500x
3600x
16000		 2600x
3800x
18000		 2800x
4000x
18000
  1. The production capacity of nitrogen is0℃，0.101325MPaAThe gas volume under [specific] conditions。
  2. The unit energy consumption for nitrogen production is calculated based on the designed value of the air flow rate entering the column。
  3. The liquid products serve as a reference for model selection. When the liquid product specifications deviate from the values stated above, the unit power consumption indicators shall adhere to the stipulations of the contract。

Series of complete small-scale air separation products

Model number KDON-100/200 KDON-200/400 KDON-300/600 KDON-400/800 KDON-600/1200 KDON-800/1600
The production volume of oxygenNm3/h 100 200 300 400 600 800
The purity of oxygen%O2 ≥99.6 ≥99.6 ≥99.6 ≥99.6 ≥99.6 ≥99.6
The production yield of nitrogenNm3/h 200 400 600 800 1200 1600
The purity of nitrogen%N2 ≥99.99 ≥99.99 ≥99.99 ≥99.99 ≥99.99 ≥99.99
Specific consumptionkW·h/Nm3O2 1.45 1.16 0.84 0.76 0.72 0.68
  1. The production yields of oxygen and nitrogen are0℃，0.101325MPaAThe gas volume under [specific] conditions。
  2. The specific power consumption of oxygen does not encompass the power consumption value of the oxygen compressor。
  3. The concentrations of oxygen and nitrogen are presented in volume percentage。
  4. Nitrogen production rate: Oxygen production rate≥2：1
  5. The power consumption indicators for the concurrent production of certain liquid products shall adhere to the stipulations of the contract。
This is an aerial photography video of Yuxi Xianfu Steel Co., Ltd. in Yunnan Province. All of the air separation equipment depicted in the video was manufactured by our company。

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