EX Gas/Oil Series - High Pressure Steam Boiler

Miura’s exclusive “low water content, watertube” design is the most versatile boiler available in the marketplace today. A once-through, forced circulation steam boiler producing steam in just 5 minutes while maintaining an 85% fuel-to-steam efficiency.
A once-through, forced-flow, steam generator design provides full output within 5 minutes.

  • Gas-Oil dual fuel burner
  • Up to 300BHP per boiler and up to 4,500 HP (150,000lb/hr) with our MI-system
  • Up to 250psi pressure boiler is available.
Specifications
EX-300 SGO
Boiler Type No 2 Oil Fired, Natural Gas or Propane Fired with Economizer
Utilization Horsepower 300 HP
Maximum Pressure 170 psig MAWP, 150 psig Maximum operating
Equivalent Output 10,350 LB/HR
Heat Output 10,050,000 BTU/HR
Efficiency 85% (80% without Economizer) - fuel to steam
Heating Surface Area 468 FT²
Operational Weight 18,000 LBS
Shipping Weight 17,100 LBS
Dimensions Given are Approximate
Width 105.5 in.
Length 142 in.
Height 157 in.
Combustion System Proprietary forced draft, step fired modulation Hi-Low-Off
Ignition System Electric spark ignited, interrupted gas pilot
Power Supply 230, 460, 575 V, 3 Phase, 60 Hz
Max. Electrical Consumption 35.4 KVA (37.3 for oil)
Fuel Type Natural gas or propane (3-5 psig), No. 2 oil
Gas Consumption 11,780 SCFH
No.2 Oil 84.5 GAL/Hr
Gas Supply Pressure 3-5 psig natural gas or propane
Main Steam Outlet Valve 4 in.
Safety Valve Outlet Two 2 1/2 in.
Main Water Inlet 1 1/4in.
Fuel Gas Inlet 2 1/2in.
Fuel Oil Inlet 3/4 in.
Automatic Surface Blowdown Two 3/8 in.
Manual Blowdown Two 1 in.
Chimney Diameter (ID) 26 in.
Flame Detector Ultraviolet flame eye sensor
Pressure Control Adjustable pressure transducer and switch
Liquid Volume Control Electric Conductivity Type
Overheat Protection Low Water Cut Off Thermocouple
Dimensions

Front View
EX-300 SGO
A1 A2 A3 A4 B1 B2 B3 B4
114 59 ½ 42 7 ½ 140 ½ 55 29 ½ 68
H1* H2 H2** h
156 ½ 87 156 ½ 130 ½

Side View

Top View

No. Name of Part
1 BOILER VESSEL
2 STEAM SEPARATOR
3 LIQUID VOLUME CONTROLLER
4 ECONOMIZER
5 BLOWER
6 CONTROL BOX
7 WIND BOX
8 OIL PUMP
9 LADDER
10 STEAM OUTLET FLANGE
11 MAIN SAFETY VALVE(S)
12 MANUAL BLOW DOWN
13 MANUAL BLOW DOWN
14 TOP INSPECTION HOLE
15 SIDE INSPECTION HOLE
16 AUTOMATIC BLOWDOWN
17 AIR DUCT
18 ECONOMIZER SAFETY VALVE
19 FEEDWATER PIPING
20 MAIN GAS TRAIN

Schematic View (Standard)

No. Name of Part
1 MAIN GAS VALVE
2 MAIN GAS REGULATOR
3 GAS CONTROL VALVE
4 MAIN GAS ORIFICE (LOW)
5

TEST FIRING VALVE

6 PILOT GAS VALVE
7 PILOT GAS REGULATOR
8 PILOT GAS CONTROL VALVE
9 PILOT GAS ORIFICE
10 PILOT AIR ORIFICE (HIGH)
11 HIGH-LOW CONTROL VALVE
12 SAFETY VALVE(S)
13 SAFETY RELIEF VALVE*
14 AIR VENT VALVE
15 STEAM PRESSURE SWITCH
16 STEAM PRESSURE SWITCH
17 PRESSURE GAUGE
18 PRESSURE SENSOR
19 BOILER BLOW-OFF VALVE
20 BLOWDOWN CONTROL VALVE
21 SAMPLE WATER VALVE
22 BLOWDOWN STRAINER
23 SAMPLE WATER VALVE
24 GAS PRESSURE SWITCH
25 GAS PRESSURE SWITCH
26 AIR PRESSURE SWITCH
27 WATER VALVE*
28 CHECK VALVE*
29 CHECK VALVE*
30 CHECK VALVE*
31 FEED WATER VALVE
32 OIL PUMP
33 OIL FILTER
34 OIL CONTROL VALVE
35 OIL CONTROL VALVE
36 OIL CONTROL VALVE
37 OIL PRESSURE GAUGE
38 OIL VENT VALVE
39 GAS VENT VALVE*
40 AIR CONTROL VALVE
41 L.V.C. BLOW-OFF VALVE
42 PILOT AIR ORIFICE
43 OIL PRESSURE SWITCH*
* MAY NOT BE SUPPLIED OR OPTIONAL ACCORDING TO BOILER TYPE
** NUMEROUS OPTIONS ARE AVAILABLE UPON REQUEST
Note
  1. Optional EXH-SGO Series at 250 Psig MAWP, 225 Psig maximum operating
  2. Equivalent output calculated from and at 212¬?F (100¬?C) feed water at 212¬?F (100¬?C) steam.
  3. Thermal efficiencies are based on high heating values of fuels at 68¬?F (20¬?C) feed water.
  4. UL and CGA/CSA approved for natural gas, propane, and No. 2 oil.
  5. Gas consumption based on natural gas with high heating 1004 BTU/SCF.
  6. All Miura steam boilers are fully packaged and test fired at factory.
  7. Built to meet or exceed UL and ASME standards in U.S.A.; CGA/CSA and B-51 standards in Canada.
  8. Flue gas recirculation is optional only with the economizer.