What is the function of the return line for the new hydrogen compressor in the hydrogenation unit?
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What is the function of the return line for the new hydrogen compressor in the hydrogenation unit?
Is it one to one, two to two? If so, it is used to control the work done at each stage of the compressor, thereby regulating the outlet temperature by changing the compression ratio.
Preventing compressor surge by ensuring a minimum inlet flow rate
It is used to regulate the flow rate of air supplied to the press.
The exhaust temperature can be adjusted to prevent overheating at the outlet and damage to the seal.
It is used to balance the pressure and temperature at various stages of import and export, ensuring the efficient and stable operation of the compressor while meeting the process requirements of the equipment.
The return line on the new hydrogen compressor is used for anti-surge control (in centrifugal compressors) and for controlling the hydrogen-to-hydrocarbon ratio (in reciprocating compressors). There is also a type used to regulate high pressure, namely what is called one return one, two returns two, three returns three.
The new hydrogen compressors in various hydrogenation units are generally reciprocating type, while the cycle hydrogen compressors can be either centrifugal or reciprocating type. The so-called new hydrogen compressor mentioned by the poster is likely to be a reciprocating type. In that case, the return line serves to keep the inlet pressure of the compressor within an appropriate range, as well as to ensure that the ratio between the outlet and inlet pressures at each stage of the compressor (the compression ratio) remains within a suitable range; this helps to prevent overheating of the compressor.
When the machine is stopped and restarted, the pressure is low, which makes it easier to start the motor; moreover, the starting power required is also low
Maintain system pressure to ensure that the exhaust temperatures at various outlets of the new hydrogen machine do not become too high, as this could damage the seals; high temperatures also affect the lubricating properties of the lubricating oil
For the new hydrogen return line installed at the new hydrogen separation tank, by adjusting the amount of hydrogen returned, it is possible to maintain a certain pressure at the inlet of the new hydrogen processing equipment; simultaneously, it enables regulation of the pressure throughout the entire hydrogenation reaction system