3x3.3MW CAT 3612 Power Station, 50Hz. HFO
For Sale

3x3.3MW CAT Diesel Engine Used Power Station: 50Hz., HFO,  3 units, CAT 3612,  6.6kV, Multifuel.   Including all related Accessories needed for a complete power station ( 2 control rooms , 2 Containers of different electrical & mechanical spare parts & heavy fuel oil purification & separation unit.).  (Click here for images    1     2     3     4   )    (Click here for Cat 3612 Parts List.)

Equipment Details:

A. THREE 3612 CATERPILLAR DIESEL GENERATING SETS EACH COMPRISING:

 

Maker	Caterpillar inc.
Type of Engine	Four-stroke, water-cooled, Distillate Fuel
Application	Power Generation,
Cylinders arrangement	Vee type
No. of cylinders	12 cylinders
No. of strokes	Four strokes
Bore, mm	280
Stroke, mm	300
Swept volume, liters	222
Aspiration	Turbocharger, J.W. Aftercooler
Compression ratio	12.4 : 1
Mean piston speed	10 m/sec
Output	3320 KWb
Revolutions per minute	1000 RPM
Dry weight (approx.)	51,230 Kg
Overall length (approx.)	8,970 mm
Overall width (approx.)	2,515 mm
Overall height (approx.)	3,710 mm
B.S.F.C Break Specific Fuel Consumption Diesel	Appr. 200 G/BKW.hr
B.S.F.C Break Specific Fuel Consumption HFO	Appr. 205 G/BKW.hr

 Fuel consumption is based on ISO 3046/1 standard conditions fuel with + 5 % tolerance for fuel having a L.H.V 42,780 KJ/Kg.

 A.1. ATTACHMENTS:

 A.1.1 EXHAUST SYSTEM:

 The exhaust system of the engine serves to carry off exhaust gases of the engine.

The exhaust gas system consists of the pipes, the pipework equipment, silencer,

chimney and various fixing devices.

 A.1.2 COOLING SYSTEM:

 Principle drawing:

 

 Mainly consists of:

 §  Combined circuit one for Aftercooler/oil cooler & jacket water cooling system.

§  Includes jacket water and lube oil temperature regulators and two external circuit connections. 

§  Horizontal Radiator, Remote mounted, high capacity, and with electrical motor driven fans.

§  Expansion tank, including sight gauge, pressure cap with air ventilation.

§  Jacket water pumps, gear driven.

§  Radiator cooling tower

   

A.1.3 FUEL SYSTEM ( Tanks are not included in our scope of delivery ):

The fuel oil system supplies the engine with diesel fuel oil or heavy fuel oil. The plant

can be operated as diesel or heavy fuel oil plant. In case of heavy fuel oil operation, the

engine has to be started and stopped under diesel operation in order to keep the

systems running clean from heavy fuel oil.

In case of diesel operation, the fuel is delivered from the LFO or DFO feeding tank to

the HFO and LFO delivery unit with pumps and filters, via booster unit, to the engine

with preceding double fuel filter.

By means of the HFO and LFO delivery unit, the heavy fuel oil is filtered with 10µm and

heated in the secondary booster unit to get the respective injection viscosity. The heavy

fuel oil is delivered to the engine by means of a fuel double filter, filter fineness 34µm.

 

Description of the HFO equipment which is our scope of delivery:

 HFO system  

1. FUEL TREATMENT SYSTEM DESCRIPTION

 

After the fuel is supplied to the HFO settling tank the fuel must be cleaned by a centrifugal fuel purifier. The HFO separator supply pumps sucks the fuels from the settling tank via a pre filter and pumps it to the separator )  separator not included in our scope of delivery ) over a fuel heater and a 3 – way separator by – pass section valve. If the fuel is send over the separator the fuel will be cleaned from water and other impurities and the cleaned fuel will be feed to the service tank. If the separator  is bypassed the fuel will be back to the settling tank.

Sludge and water from the separator will be lead into a sludge tank being part of the total unit. An air driven pump will pump the sludge and water mixture to the sludge storage tank based on the sludge tank level.

 

Technical data:                                                      fuel – HFO: 380cSt at 50˚C

HFO temperature settling tank:                             70˚C

HFO temperature service tank:                             90˚C

HFO separator temperature:                                  98˚C

HFO heating:                                                         separated steam of 7 bar (g).

Voltage/ frequency:                                               400 VAC/3P/N/50 Hz

Installation:                                                            Inside house

Ambient conditions:                                              40˚C – RH 85%

             booster unit

The booster unit is for pressuring cleaning. Conditioning and feeding the fuel from the service of the engines. The booster part of the oil treatment unit must be designed to fulfill the diesel engine supplier requirements concerning the fuel circulation capacity, supplier pressure viscosity/temperature and filtration fineness. These values are varying from supplier to the supplier and must be given by the diesel engine supplier. The return fuel from the engine is generally equipped with a back pressure regulator. Where after the fuel is feed back to the booster part of the oil treatment unit. For availability reasons it might sometimes be necessary to install a stand – by pump and/ or stand – by heater on the oil treatment unit.

 Comprising:

3 x pump                                        cap. Each 3,5 m³/h – 8 bar (g)

                                                         e-motor     2,2 kW – ISO F, 1.450 rpm

1 x Automatic – filter                     25 my abs.

1 x Bypass – filter                         34 my abs.

1 x double LFO – filter                 34 my abs.

2 x mixing tank                              volume 180 liter, cpl. w, safty valve – adj. at 12

                                                        bar, blow – off line cpl. w. gas – tight blow off valve

2 x fuel steam heater                  cap. 90kW -∆t = 30 k incl. motor

                                                        regulating valve

1 x Visco sensor                          0 – 50 cSt. 4 – 20 mA

2 x flow meter                               totalize

3 x pumps                                     cap. Each 15 m³/h – 8 bar (g)

                                                        e-motor      5,5 kW – ISO F

1 x LFO cooler                              appr. ∆t = 15 k

1 x control cabinet                       for controlling of viscosity and temperature

                                                        Temp. : range …. 200˚C graphic plc.

 

All component listed above will built on one (1) common base frame together with all necessary.

Support for equipment and pipes, instrument, valves, piping, flanges, bends, gasket and insulation.

Coating, total 120 micron (2 layers of prime and one layer of topcoat).

One control cabinet with a graphic plc and all necessary control buttons.

 There is common control cabinet with a graphic plc and aluminum panel with flow chart and control buttons.

A.1.4 LUBRICATION SYSTEM:

 The lubricating oil system supplies lubricating oil to the engine and passes the heat of

the engine contained in the oil on to the cooling water system. It is required to use lubricating oil of the SAE class 40 with a maximum operating temperature of about 70°C behind the engine and a working pressure of about 4,5 bar before the engine. The lubricating oil pressure and temperature are being monitored. The lubrication oil system of the engine is a circuit from the lubricating oil circulation tank over lubricating oil pump, lubricating oil cooler, lubricating oil automatic filter and indicating filter to the engine and back to the lubricating oil circulation tank. The operation is monitored through motor-acted control. Monitored values are temperature (max) and pressure (min). The lubricating oil is cleaned in the main circuit by means of the automatic filter and the indicator filter and in the bypass flow in a special circuit by means of the separator. The plant is designed with a separator for each engine/alternator set. The residues resulting from the separation are collected in the lubricating oil sludge tank of the separator and pumped into the sludge tank of the fuel oil system. From the joint lubricating oil tank and pump unit, lubricating oil is transported to the respective lubricating oil circulation tanks and to the internal cylinder lubrication systems of the engine.

 Mainly consists of:

 §   Integral lubrication system.

§   Centrifugal oil filters, includes installed oil lines & shutoff valve. Filters centrifuge bypass oil from the main lubricating oil pump. Includes three filters, can be serviced with the engine running.

§   Oil Cooler, Fixed tube bundle configuration with rubber end sheets, front mounted, includes oil temperature regulator.

§   Oil filler and dipstick.

§   Oil pan.

§   Oil pump, gear driven, with the pressure regulation valve.

§   One prelube pump, Air motor driven.

 A.1.5 STARTING SYSTEM:

 §   Air starter 125-225 psi.

§   Air control system.

§   One Air bottle for each Genset.

   

A.1.6 SPEED CONTROL GOVERNOR:

 Electronic governor, Isochronous / Droop speed & load sharing control, equipped with hydra-electric actuator.

 A.1.7 PROTECTION SYSTEM:

 Provides protection against the following:

 A.1.7.1 SHUTDOWNS:

§   Overspeed

§   Low lubricating oil pressure (Low & High RPM)

§   High crankcase pressure

§   Loss of jacket water detection

§   High jacket water temperature

§   High oil temperature        

 A.1.7.2 ALARMS:

 §   Engine Overspeed

§   Low lubricating oil pressure (Low & High RPM)

§   High lubricating oil temperature

§   High jacket water temperature

§   High inlet manifold air temperature

§   High exhaust stack temperature

§   High fuel temperature

§   Low oil level

§   Low coolant level

§   Low starting air supply pressure

 

A.1.8 INSTRUMENT PANEL:

 §   Tachometer, for measuring Engine speed.

§   Engine coolant temperature.

§   Inlet manifold air temperature.

§   Lubricating oil temperature.

§   Exhaust stack temperature.

§   Lubricating oil pressure.

§   Engine fuel pressure.

§   Oil filter differential pressure.

§   Fuel filter differential pressure.

§   Inlet air restriction pressure.

§   Clock hour meter.

 

A.1.9 MISCELLANEOUS:

 §   Engine wiring meet IEC standard service.

§   Torsional vibration damper and guard.

§   Structural steel base, three point mounting.

§   Vibration isolators, for stationary generating set base.

§   Manual barring device.

§   Paint, Caterpillar Yellow.

 

A.1.10 INSTALLATION DRAWINGS: 

 §   Technical manual – Two copies.

§   Technical drawings.

 A.2 GENERATOR:

 

Manufacturer	Leroy Somer
Rating	3300 ekW / 4125 kVA @ 0,8 p.f.
Voltage	6,600 Volts
Frequency	50 HZ
Speed	1000 RPM
Bearings	Double Bearing
Insulation	Class "F"
Temperature rise	Class "B"
Regulation	+ 2 % regulation (Steady state)