Air separation parts FAQ

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

Pressure dew point: after the wet air is compressed, the density of water vapor increases and the temperature also rises. When the compressed air cools down, the relative humidity will increase. When the temperature continues to drop to 100%, water drops will come out from the compressed air, the temperature at this time is the "pressure dew point" of compressed air ". The relationship between the pressure dew point and the normal pressure dew point the corresponding relationship between the pressure dew point and the normal pressure dew point is related to the "compression ratio", which is generally expressed by charts. Under the condition of the same "pressure dew point", the higher the "compression ratio" is, the lower the normal pressure dew point it corresponds to IS. For example: when the compressed air pressure dew point of O.7MPa is 2℃, the normal pressure dew point is-23℃. When the pressure increases to 1.0MPa and the dew point of the same pressure is 2℃, the measurement of...

The world's iron and steel industry has experienced several revolutions. Around 1865, the air side blowing converter steelmaking method and flat furnace steelmaking method appeared in Britain, and then the flat furnace replaced the side blowing converter. In order to strengthen the flat furnace smelting, then adopt the oxygen blowing operation. After Austria invented the oxygen top-blown converter steelmaking method (LD method) in 1952, the world steel industry has entered a period of rapid development. With the great leap of iron and steel industry, oxygen generator is developing towards large scale rapidly, and oxygen and steel are closely connected. After Austria, the United States is the first country to adopt oxygen top-blown converter in the world. Japan has introduced this technology and developed it vigorously since 1957. Within only ten years, the steel production has soared from 10 million tons to 0.1 billion tons. Its development speed is so fast, and the proportion of ox...

In the normal operation of the crude argon Tower, sometimes the resistance drop, the argon content drop and the oxygen content increase of the crude argon tower will happen suddenly, and the normal operation condition of the crude argon tower will be destroyed, it is called "nitrogen plug" working condition of crude argon tower. The direct reason for the "nitrogen plug" of the crude argon Tower is that the nitrogen content of the argon distillation in the upper tower exceeds, and generally the nitrogen content should not exceed 0.1%. This is because the separation of oxygen and argon is conducted in the crude argon Tower, and most of the oxygen in the argon distillation is condensed in the rising process, while the nitrogen component of low boiling point is not condensed, and all of them are left in the crude argon, making the nitrogen content in the crude argon be dozens of times larger than that in the argon distillation. The heat transfer temperature difference of the crude argon...