Air separation parts FAQ

  After the gas flows out of the expander impeller, there is still a certain speed. This part of mechanical energy without work is called residual speed loss. In order to reduce the velocity of the gas flow at the outlet of the expander, there is generally a section of expanding short pipe at the outlet of the expander impeller. This section of short pipe can reduce the velocity of the air flowing out of the expander impeller, reduce the...

According to the specification and smelting level of converter, the total oxygen consumption of steel can be calculated and converted to the oxygen consumption of each hour. The low and peak oxygen consumption is balanced by ball irrigation or liquid vaporization. The gas pressure of peripheral comprehensive pipe network is higher than the pressure of final gas consumption point. It is sent to the user thro...

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It should contact with the front and rear processes when the piston compressor is ready to stop, we should pay attention to the following sequence: first, cut off the gas supply slowly. In order to prevent the outlet pressure from rising after the gas supply is cut off, open the vent valve at the same time. For the oxygen compressor, the vent valve should be opened slowly, because excessive opening may produce static electricity and cause fire. Then, stop the motor. After the motor stops, turn off the circulating oil pump, grease injector motor and cooling water valve. However, there are also exception cases. For example, in case of emergency shutdown, in order to save time and prevent the accident from expanding, the power supply can be cut off immediately to stop the compressor with load.

There are four kinds of commonly used thermometers in air separation plant: industrial internal standard glass thermometer, thermocouple thermometer, thermal resistance thermometer and pressure gauge thermometer. According to the principle of temperature measurement, the range of temperature measurement and whether it can be transmitted remotely, four kinds of thermometers are used in different temperature measuring occasions of air separation plant. Industrial internal standard glass thermometer is used in small air separation plant to measure the temperature of all levels of compressor gas and cooling water locally, and it is also used for temperature measurement during heating and thawing; thermocouple thermometer is used for purifier; thermal resistance thermometer is used for low temperature measurement inside cold insulation box; pressure gauge thermometer is used for measuring lubricating oil temperature.