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ul. Ovtsinskaya, 66Д
Sverdlova Settlement, 188682
Sverdlova Settlement, 188682
Compressor 433ГЦ2-143/25-ПМ2
Compressor 433ГЦ2-143/25-ПМ2 is designed to compress a nitrogen and hydrogen mixture in the process cycle of ammonia production according to GIAP technology.
A triple-effect, four-section compressor with a circulation stage. The sections are located according to a 'back-to-back' aerodynamic layout.
The low-pressure housing includes two sections: sections 1 and 2 have 5 stages each. The medium-pressure housing includes section 3 with 10 stages 5 stages each according to a 'back-to-back' layout. The high-pressure housing includes section 4 (6 stages) and a circulation stage. Compressed air after each section is cooled in an intermediary air gas cooler. All stages are designed with vaneless diffusers. The drive is through a steam turbine. The compressor's rotors are rotated directly by the steam turbine.
A triple-effect, four-section compressor with a circulation stage. The sections are located according to a 'back-to-back' aerodynamic layout.
The low-pressure housing includes two sections: sections 1 and 2 have 5 stages each. The medium-pressure housing includes section 3 with 10 stages 5 stages each according to a 'back-to-back' layout. The high-pressure housing includes section 4 (6 stages) and a circulation stage. Compressed air after each section is cooled in an intermediary air gas cooler. All stages are designed with vaneless diffusers. The drive is through a steam turbine. The compressor's rotors are rotated directly by the steam turbine.
To increase power efficiency and vibration stability of the rotor of the compressor's low pressure housing, an objective to upgrade the unit was set in ammonia production shop No. 2 of JSC Apatit in Cherepovets.
One of the goals of the work was also an opportunity of further increase in the compressor's output with ensuring the necessary output to achieve the production of up to 1,950 tons/day of ammonia.
One of the goals of the work was also an opportunity of further increase in the compressor's output with ensuring the necessary output to achieve the production of up to 1,950 tons/day of ammonia.
The pressure ratio through the sections of the compressor was redistributed to enhance the reliability of operation of the rotor of the low pressure housing subjected to the influence of the exciting aerodynamic forces and the failure of the impellers.
All impellers of the synthesis gas compression stages are designed as medium-pressure to ensure parameters in a wide range of stable operation. The circulation stage is designed as low-pressure.
Stages with vaned diffusers expanded in relation to the impeller in all the synthesis gas compression sections are used. The circulation stage is designed with a vaneless diffuser to expand the stability area.
To reduce leakage, labyrinth seals are designed to be more developed: the number of nibs and the volume of the chambers between them are increased. At the entrance to the seals there are special holes to spin gas flow and reduce exciting oscillating forces acting on the rotor.
All impellers of the synthesis gas compression stages are designed as medium-pressure to ensure parameters in a wide range of stable operation. The circulation stage is designed as low-pressure.
Stages with vaned diffusers expanded in relation to the impeller in all the synthesis gas compression sections are used. The circulation stage is designed with a vaneless diffuser to expand the stability area.
To reduce leakage, labyrinth seals are designed to be more developed: the number of nibs and the volume of the chambers between them are increased. At the entrance to the seals there are special holes to spin gas flow and reduce exciting oscillating forces acting on the rotor.
In August 2018 the upgraded unit was commissioned.
The output was increased by 20%, the specific power consumption is reduced by 6.5%.
The output was increased by 20%, the specific power consumption is reduced by 6.5%.
