Purpose and Application
This group includes compressors purposed to induce air draft through the sinter cake (burden) fused by means of the sintering machine and to remove thus generated agglomeration gases during dry and wet gas cleaning.
The machine consists of a compressor,having a welded or a cast body and a single double-suction impeller, lube oil system, electrical motor drive connected to the compressor either directly, or via speed-increasing gear. The machine is equipped with protective and control devices which ensure its stable operation.
Typical Components of the Machine:
- centrifugal сompressor with a rotor, foundation frames, tie-rods and base plates;
- reduction gear (in case the compressor speed differs from the electric motor drive speed);
- lube oil system;
- monitoring and protection instruments, instrument transducers;
- heat monitoring, control, protection and signaling board;
- compressor mounting and dismounting tools;
- accessories for lifting and alignment of the rotor and the top section of the compressor housing;
- electrical motor;
- operating documents.
Package-supplies of all machine components manufactured by “REP Holding” result in:
lower cost of the basic equipment due to the fact that such equipment is manufactured directly by CJSC "REPH" subsidiaries;
application of the up-to-date technical solutions;
lower operating cost;
reliable operation of all other components;
earlier equipment delivery dates;
The group of equipment used for sintering includes the following machine series: 15500-11-1, 15000-11-1, 13000-11-1, 12900-11-1,12000-11-1, 9000-11-5, 9000-11-4, 6700-12-1, 7700-12-1.
The compressor includes the compressor itself, the electrical motor drive, the lube oil system, monitoring, protection, and signaling system and the heat monitoring boards.
The shafts of the compressor, the reduction gear, and the electric motor are connected by means of gear couplings. Plate coupling may be used. The lube oil system of the machine provides forced lubrication of the bearings of the compressor, the reduction gear, and the electric motor, and oil supply to the gear transmission and couplings (if applicable).Control of the machine start and stop, and the machine performance monitoring is done from the remote control panel located in the operator’s room.
The machine control panel is equipped with emergency and warning audible signals and lights and process status indicators.
Compressors are centrifugal, include the single-cylinder single-stage compressors with the double-suction impellers. The compressor body, either welded,or cast, consists of two suction cavities and a volute. The suction branch pipes are directed upward, the discharge branch pipes, sideward. The volute internals are lined with removable protection plates.
The compressor impeller is a welded piece. The inlet of the impeller is equipped with a removable anti-wear screen. The protective plates and the anti-wear screens prevent wearing of the internal surface of the volute and the impeller by the abrasive dust. The protective plates and the antiwear screens are replaceable.
The compressor is designed to support air moving through the sinter burden to be fused, and further removal of the flue gases after their cleaning via the gas outlet pipe to the flue gas stack.
The compressor’s drive is an electric motor SDZ-900S-4 (СД3-900S-4) complete with the frequency converter PChVS-5/10-12UZL4 (ПЧВС-5/10-12УЗЛ4).
Oil is supplied by a main (starting) oil pump. The oil pump with AC motor drive is mounted onto the frame. Another similar pump is a stand-by pump. The main (starting) pump and the stand-by pumps are supplied from two independent power supplies.
Control, monitoring, protection and signaling system includes the heat monitoring boards which are equipped with the machine start and stop controls, the machine operating parameter meters, and emergency and warning signaling devices.
The compressor is designed to support air moving through the sinter burden to be fused, and further removal of the flue gases after their cleaning via the gas outlet pipe of the sinter machine to the flue gas stack.
The compressible medium is agglomeration gas containing upto 200 kg/m³ of dust. The compressor may be used for the sintering machines covering from 84 to 312 m² (the latter needs two parallelly-running compressors).
Speed-increasing gear installed between the compressor and the electric motor is a single-stage herringbone gear (nitrated teeth).
On the frame oil tank there are the basic components of the oil system: starting and standby oil pumps, oil coolers, oil filters.
Oil is supplied by the main oil pump mounted on the speed increasing gear. The main components of the oil system, such as starting and standby oil pumps, oil cooler, oil filter, are mounted onto the frame (oil tank).
Control, monitoring, protection and signaling system provides step-bystep starting and stopping of the compressor, as well as monitoring of the main parameters.
The compressors are designed to support air moving through the sinter burden to be fused, and further removal of the flue gases after their cleaning via the gas outlet pipe of the sinter machine. Another purpose is to exhaust the combustion residues containing upto 80-100 mg/m³ of dust from the blast furnaces. The compressors are used with the dry and wet gas cleaning systems, and may be used for the sintering machines covering upto 75 m².
The compressors have rather similar design and, mainly, their only difference is the number of the impeller blades, and the type of the electric motor drives.