Air separation parts FAQ

What are the roles and principles of pre-cooling systems for air separation equipment?

How to determine if there is a leakage inside the air separation equipment?

The air contains a small amount of water vapor, carbon dioxide, acetylene, hydrocarbon and a little dust and other impurities. It will be very dangerous to let these impurities enter the air separation plant. Solid impurities will wear the device, especially threatening the safe operation of high-speed rotating equipment. Bringing them into the heat exchanger will also pollute the surface of heat transfer, reduce the heat transfer effect; steam and CO2 will freeze and precipitate in succession under the condition of low temperature, thus blocking the gas Channel and the sieve hole of the tower plate; the accumulation of acetylene and hydrocarbon tables in the distillation column is excessive, it is easy to trigger explosion. Therefore, in order to improve the safety, reliability and economy of the unit operation, the air must be purified.

Can air separation equipment rely on condensing evaporators to accumulate liquid during normal operation?

How can air separation equipment adjust distillation conditions to increase oxygen production?

What are the requirements of the air separation equipment gas station for the surrounding air?

The low temperature valve is installed at normal temperature and works at low temperature, with a wide range of temperature variation. If the design and installation are not appropriate, it is easy to generate thermal stress or deformation. Meanwhile, the operation part of the valve is at normal temperature, and the circulation part is at low temperature. In order to reduce the cold loss, the stem is often made very long, which is easy to produce deformation and get stuck. Low temperature valve often rotates flexibly at normal temperature, but it is tight at low temperature, even can't be opened. The main reasons why the valve gets stuck at low temperature are: 1) during installation, prestress is generated due to unreasonable configuration of the valve and the pipeline; or the cold compensation ability of the pipeline is poor, and the valve position changes at low temperature; or the valve lacks support, and deformation is generated at low temperature; or the valve is not fixed pro...

To eliminate the vibration of the compressor, we generally start from the following ways: 1. The static balance and dynamic balance of moving parts should be corrected, otherwise it will cause congenital vibration factors. 2. The concentricity of compressor, motor or diesel engine should be correct. 3. The foundation of compressor should be constructed in strict accordance with the design drawings. No rigid connection is allowed between the foundation and any structure of the building. 4. Because of the vibration caused by airflow pulsation, the accessory equipment and pipeline must have firm support and be fastened with it. The cantilever frame should be reinforced support and plugged tightly with padding iron. 5. The tightening force of the anchor screw of the machine should be consistent; 6. The rack (engine base) should have enough stiffness.

The pressure value measured by the pressure gauge reflects the pressure level, but it is not the actual pressure. According to the working principle of the pressure gauge, the measured pressure is the difference between the actual pressure (absolute pressure) and the surrounding atmospheric pressure. When the actual pressure is higher than the atmospheric pressure, the measured pressure is called surface pressure. Absolute pressure should be equal to surface pressure plus atmospheric pressure: absolute pressure = surface pressure when the actual pressure is lower than the atmospheric pressure, the measured pressure is called vacuum degree, which is also called negative pressure. Absolute pressure is equal to atmospheric pressure reduce vacuum degree: absolute pressure = atmospheric pressure-vacuum degree because the atmospheric pressure is approximately equal to 0.1MPa, when the pressure is relatively high, the surface pressure plus this value is approximately equal to absolute pres...

The technical maintenance of power equipment includes: (l) daily spot inspection and round inspection by the operating personnel of power station according to the specified time, route, project and requirements, make use of human senses or simple instruments and meters to test and inspect the equipment, observe, record the running condition of the equipment and the intact condition of the safety facilities, and find out the defects and hidden dangers of the air separation equipment in time, and take corresponding maintenance measures to ensure the normal operation of power equipment. In daily spot inspection and round inspection, for the new equipment which has just been put into operation, and the equipment which has restored operation after major accidents occur, the equipment operating under severe weather conditions (such as strong wind, thunder, rain, hailstones, snow, frost, fog, etc.) is regarded as the key inspection content. As for the power equipment (such as the power dis...

Why does the air separation equipment pre cool the main cooling system before liquid accumulation and rely on liquid air evaporation to cool the main cooling system differently

What should be paid attention to during the storage and transportation of liquid storage tanks