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LXEX 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 300HP per boiler and up to 4,500HP (150,000lb/hr) with our MI-system.
  • Up to 250psi pressure boiler is available

Miura’s exclusive “low water content, water tube” 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 maintains an 85% fuel-to-steam efficiency.

EX Series Comparison Table

ITEM EX-100 SGO
EX-150 SGO
EX-200 SGO
EX-250 SGO
EX-300 SGO-LV
Boiler Type Multiple water tube, once through, forced flow, steam boiler
Utilization Horsepower (BHP) 100 HP 150 HP 200 HP 250 HP 300 HP
Maximum Pressure[1] (PSIG MAWP) 170 PSI MAWP, 150 PSIG Maximum Operating
Equivalent Output[2] (LB/HR) 3,450 5,175 6,900 8,625 10,350
Heat Output (BTU/HR) 3,348,000 5,022,000 6,695,000 8,369,000 10,050,000
Efficiency[3] (Fuel to steam) 85% Gas / 87% Oil (80% Gas / 82% Oil without Economizer)
Heating Surface Area (FT²) 196 323 389 499
Operational Weight (LBS) 7,250 11,500 17,850 18,000
Shipping Weight (LBS) 6,750 10,650 10,650 16,600 17,100
Dimensions Given are Approximate
Width (in.) 81" 91" 94" 106"
Length (in.) 109" 130" 136" 130"
Height (in.) 99" 120" 146" 146"
Combustion Control Proprietary Forced Draft, Step Fired, HIGH-LOW-OFF
Ignition System Electric Spark Ignited, Interrupted Gas Pilot
Power Supply 208, 230, 460, 575V, 3 Phase, 60Hz
Max. Electrical Consumption (KVA) 12.59
(13.7 for Oil)
23.53
(24.64 for Oil)
30.1
(31.2 for Oil)
30.1
(32.1 for Oil)
32.9
(34.9 for Oil)
Fuel Type[4] Natural Gas or Propane Gas (3-5 PSIG), No. 2 Oil
Natural Gas Consumption[5] (SCFH) 3,940 5,910 7,880 9,850 11,810
Gas Suppy Pressure 3-5 PSIG Natural Gas or Propane Gas
No. 2 Oil[6] (GAL/HR) 27.5 41.2 55.0 68.7 82.5
Main Steam Outlet Valve (in.) 2" 3" 4"
Safety Valve Outlet[7] (in.) One 2" One 2 1⁄2 Two 2 1⁄2
Fuel Inlet (in.) 2" (Gas) - 3⁄4" (Oil) 2 1⁄2" (Gas) - 3⁄4" (Oil)
Main Water Inlet (in.) 1" 1 1⁄4"
Manual Blowdown Two 1" One 1" and One 1 1⁄4"
Chimney Diameter (OD) 14" 20" 26"
Automatic Surface Blowdown One 3⁄8" Two 3⁄8"
Flame Detector Self Checking Ultraviolet Flame Eye Sensor
Pressure Control Adjustable Pressure Switches and Transducer
Liquid Volume Control Electric Conductivity Type
Overheat Protection Low Water Cut Off & Thermocouple
 

"S" - Economizer
"G" - Natural Gas or Propane Fired
"O" - #2 Oil Fired
"F" - Flue Gas Recirculation
"N" - Low NOx


The drawing illustrated is EX-250SGO-07

ex250front

(inches)

  EX-100 EX-150/ EX-200
EX-250 EX-300LV
A1 45 56 5/8 56 5/8 56 5/8
A2 80 1/8 68 ½ 68 ½ 68 ½
A3 27 ½ 34 ½ 33 ½ 33
A4 35 ½ 50 ½ 52
52 ½
A5   91 93 7/8 105 3/4
B1 108 ½  130 135 1/8 129 3/8
B2
61 5/8 82 3/8 82 3/8 82 3/8
B3
67 ½ 87 1/8 87 ½ 87 ½
B3a
123 144 3/8 149 5/8 145 1/4
B3b 14 ½ 14 ½ 14 ½ 15
H1  97 7/8 119 5/8 145 1/4 145 1/4
H2
 69 ½ 78 73 5/8
87 1/4
h* 87 1/8 102 3/4 119 ½ 119 5/8
c 44 ½ 50 59 ½ 61
ex250top
ex250side
NO.
NAME OF PART NO. NAME OF PART
1 BOILER VESSEL 11 MAIN SAFETY VALVE
2 STEAM SEPARATOR 12 L.V.C.  BLOW-OFF
3 LIQUID VOLUME CONTROL 13 BOTTOM BLOW-OFF
4 ECONOMIZER 14 INSPECTION HOLE (TOP)
5 BLOWER 15 INSPECTION HOLE (SIDE)
6 CONTROL BOX  16 SURFACE BLOWDOWN
7 WIND BOX 17 AIR DUCT
8 OIL PUMP 18  ECONOMIZER SAFETY VALVE
9 LADDER 19 FEEDWATER PIPING
10 STEAM OUTLET FLANGE 20  MAIN GAS TRAIN

NOTE :

1. Dimensions, Specifications and some pipings are subject to change without notice.
2. Ladder, Steam separator, blower and assembly parts are shipped separately.
3. Economizer safety valve is applied for Canada boiler only.

cog Center of gravity location (except for economizer).

ex250sys diag
NO. NAME OF PART NO. NAME OF PART
1 MAIN GAS VALVE 24 BLOWDOWN VALVE
2 MAIN GAS REGULATOR 25 GAS PRESSURE SWITCH
3 GAS CONTROL VALVE 26 GAS PRESSURE SWITCH
4 MAIN GAS ORIFICE (LOW) 27 AIR PRESSURE SWITCH
5 TEST FIRING VALVE 28 WATER VALVE
6 PILOT GAS VALVE 29 CHECK VALVE
7 PILOT GAS REGULATOR 30 BLOWDOWN ORIFICE
8 PILOT GAS CONTROL VALVE 31 CHECK VALVE
9 PILOT GAS ORIFICE 32 VALVE
10 PILOT AIR ORIFICE 33 OIL PUMP
11 MAIN GAS ORIFICE (HIGH) 34 OIL FILTER
12 HIGH-LOW CONTROL VALVE 35 OIL CONTROL VALVE
13 SAFETY VALVE 36 OIL CONTROL VALVE
14 SAFETY RELIEF VALVE 37 OIL CONTROL VALVE
15 AIR VENT VALVE 38 OIL STRAINER
16 STEAM PRESSURE SWITCH 39 OIL PRESSURE GAUGE
17 STEAM PRESSURE SWITCH  40 OIL VENT VALVE
18 PRESSURE GAUGE 41 AIR CONTROL VALVE
19 PRESSURE SENSOR  42 L.V.C. BLOW-OFF VALVE
20 BOTTOM BLOW-OFF VALVE 43 PRESSURE GAUGE VALVE
21 SURFACE BLOWDOWN VALVE  44 OIL PRESSURE GAUGE VALVE
22 SAMPLE WATER VALVE 45 OIL PRESSURE SWITCH
23 BLOWDOWN STRAINER    

NOTE :

1. Unless otherwise specified, All items are standard.
2. This drawing is illustrated with an economizer.
3. Design, Specifications and some pipings are subject to change without notice.

NOTE:

[1] Optional EXH-SGO Series at 300 PSIG MAWP, 260 Psig maximum operating
[2] Equivalent output calculated base on conversion of 212°F (100°C) feedwater to 212 °F (100°C) steam.
[3] Thermal Efficiencies are based on high heating  values of fuels and 68F (20 C) feedwater.
[4] c-UL-us approved for natural gas, propane gas and No. 2 oil.
[5] Gas consumption based on natural gas with high heating values 1,000 Btu/SCF calculated with economizer.
[6] Oil consumption based on No. 2 oil with high heating value of 140,000 Btu/US Gal and calculated with economizer.
[7] Safety valve outlet size may change depending on the pressure setting.

Additional Notes:
1. All miura steam boilers are fully packaged and test fired at factory.
2. Built to meet and exceed UL & ASME standards in U.S.A.; c-UL & B-51 standards in Canada.
3. Flue gas recirculation is optional only with the Economizer.
4. Low water content option available to meet provincial water volume regulations in Canada.
5. For Low NOx, FGR is available.

What city is Miura Canada's factory located at? Unscramble letters for answer : (FRDBAROTN)
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