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ul. Ovtsinskaya, 66Д
Sverdlova Settlement, 188682
Sverdlova Settlement, 188682
Compressor К1290-121-1
Compressor К1290-121-1 is designed to compress air in the process cycle of ammonia production according to GIAP technology.
A double-effect, four-section compressor. The low-pressure housing includes two sections 3 stages in each. The high-pressure housing includes section 3 with 2 stages and section 4 with 4 stages. The sections are located one after the other. Compressed air after each section is cooled in an intermediary air gas cooler. All stages are designed with vaned diffusers. The drive is through a steam turbine. The rotor of the low-pressure housing is rotated directly by the steam turbine, and the rotor of the high-pressure housing through a multiplier with the gear ratio i=2.8.
A double-effect, four-section compressor. The low-pressure housing includes two sections 3 stages in each. The high-pressure housing includes section 3 with 2 stages and section 4 with 4 stages. The sections are located one after the other. Compressed air after each section is cooled in an intermediary air gas cooler. All stages are designed with vaned diffusers. The drive is through a steam turbine. The rotor of the low-pressure housing is rotated directly by the steam turbine, and the rotor of the high-pressure housing through a multiplier with the gear ratio i=2.8.
The grounds for upgrading the compressor in ammonia production shop No.2 of JSC Apatit in Cherepovets was the necessity to ensure stable operation of the compressor with the ammonia output of the shop 1,750 tons/day.
In accordance with the requirements specification it was required to provide for an opportunity of further increase in the output of the compressor with minimum changes.
In accordance with the requirements specification it was required to provide for an opportunity of further increase in the output of the compressor with minimum changes.
The pressure ratio through the sections of the compressor was redistributed to reduce the power consumption and temperature in the discharge of the compressor.
The impellers are designed with cylindrical vanes integrally machined on the main disk.
Stages with vaned diffusers expanded in relation to the impeller in all sections are used. The diffuser vane airfoils are optimized with an ensured separation-free flow in the vane channel near the optimal operation conditions.
To reduce the level of vibrations, the distance between the supports of the upgraded rotor of the high-pressure housing is reduced due to replacement of the support area and the thrust area in places of the new journal and thrust bearing.
To reduce leakage, the design of the labyrinth seals of the covering disks of the impellers is improved: staged replacement retainers are used.
The impellers are designed with cylindrical vanes integrally machined on the main disk.
Stages with vaned diffusers expanded in relation to the impeller in all sections are used. The diffuser vane airfoils are optimized with an ensured separation-free flow in the vane channel near the optimal operation conditions.
To reduce the level of vibrations, the distance between the supports of the upgraded rotor of the high-pressure housing is reduced due to replacement of the support area and the thrust area in places of the new journal and thrust bearing.
To reduce leakage, the design of the labyrinth seals of the covering disks of the impellers is improved: staged replacement retainers are used.
In August 2018 acceptance tests were performed, the upgraded unit commissioned. The output was increased by 20% in relation to the design one, the specific power consumption was reduced by 10%.
It is possible to further increase the output of the compressor by replacing the rotor of the low-pressure housing.
It is possible to further increase the output of the compressor by replacing the rotor of the low-pressure housing.
