Once-Through Steam Boilers

Fully automatic SAC series built under Maeda Iron Works technology. 200–1,500 kg/h.

Equivalent evaporation: 200–1,500 kg/h441–3,307 lb/h
Heat output: 107,800–808,500 kcal/happrox. 125–940 kW
Max. working pressure: 10 kg/cm²142 psi
Efficiency / steam dryness: 88% or higherSteam dryness 99.7%

Applications

Process steam for heating, sterilizing and cleaning. Fully automatic operation. Fuels: diesel, B heavy oil or C heavy oil. Gas-fired and high-pressure versions are built to order.

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SAC fully automatic once-through steam boiler

Features

88% or higher efficiencyDual heating tube bank, flue-gas feedwater preheater and fine oil atomization, with low power use.
Matched feedwater preheaterFitted on 100E models and above: C type (recovery) for hot feedwater, H type (open) for cold feedwater.
Automatic heat-recovery blowdownOn 80 models and above. Recovers heat from blowdown water and protects the vessel.
Low power consumptionLow draft loss from the tube and furnace design cuts fan power.
Factory fire-testedEvery boiler is fire-tested and checked in our plant before shipment.

Specifications

Standard specifications

Model code SAC-100ECA: 100 = equivalent evaporation (kg/h) ÷ 10; E = development order; C = feedwater preheater type; A = fuel (A diesel, B boiler oil, C heavy fuel oil, G gas).

Once-through steam boiler standard specifications
Model SAC-	20E	40E	60E	80E	100EH	150EH	100EC	150EC
Equivalent evaporationkg/h (lb/h)	200441 lb/h	400882 lb/h	6001,323 lb/h	8001,764 lb/h	1,0002,205 lb/h	1,5003,307 lb/h	1,0002,205 lb/h	1,5003,307 lb/h
Heat outputkcal/h (kW)	107,800125 kW	215,600251 kW	323,400376 kW	431,200501 kW	539,000627 kW	808,500940 kW	539,000627 kW	808,500940 kW
Max. working pressurekg/cm² (psi)	10 kg/cm² (142 psi)
Heating surfacem² (ft²)	3.942 ft²	7.783 ft²	9.8105 ft²	9.9107 ft²	9.9107 ft²	9.9107 ft²	9.9107 ft²	9.9107 ft²
Fuel use: dieselL/h (US gal/h)	14.03.7 gal/h	28.97.6 gal/h	42.111.1 gal/h	55.914.8 gal/h	68.618.1 gal/h	103.327.3 gal/h	68.618.1 gal/h	103.327.3 gal/h
Fuel use: B heavy oilL/h (US gal/h)	—	28.07.4 gal/h	41.210.9 gal/h	54.714.5 gal/h	67.117.7 gal/h	101.126.7 gal/h	67.117.7 gal/h	101.126.7 gal/h
Fuel use: C heavy oilL/h (US gal/h)	—	27.07.1 gal/h	40.010.6 gal/h	51.513.6 gal/h	62.316.5 gal/h	98.826.1 gal/h	62.316.5 gal/h	98.826.1 gal/h
Control	ON-OFF	HIGH-LOW-OFF
Feedwater preheater	—	—	—	—	H type (open)		C type (recovery)
Main steam valveA	25	25	32	40	50	65	50	65
Chimney O.D.mm (in)	1987.8 in	2489.8 in	29811.7 in	29811.7 in	34813.7 in	39815.7 in	34813.7 in	39815.7 in
Water contentL (US gal)	5013.2 gal	10026.4 gal	11530.4 gal	16443.3 gal	16443.3 gal	16443.3 gal	16443.3 gal	16443.3 gal
Weight: diesel modelkg (lb)	450992 lb	8301,830 lb	1,0802,381 lb	1,5003,307 lb	1,7003,748 lb	1,9504,299 lb	1,7003,748 lb	1,9504,299 lb
Weight: heavy oil modelkg (lb)	—	8501,874 lb	1,2302,712 lb	1,6503,638 lb	1,8504,079 lb	2,1504,740 lb	1,8504,079 lb	2,1504,740 lb

Burner: forced draft, pressure-jet atomizing. Power: 3-phase 220 V 60 Hz. Fuel LHV basis: diesel 10,300 kcal/kg (SG 0.79), B heavy oil 9,850 kcal/kg (SG 0.90), C heavy oil 9,700 kcal/kg (SG 0.96). Imperial values are converted. Gas-fired and high-pressure boilers are built to order.

Codes & Standards

Codes

TMM holds an ASME "S" Certificate of Authorization (No. 63288). Power boilers can be built to ASME BPVC Section I and registered with the National Board.