Gas Combustion Unit for LNG Fueled Vessel
IGF codeCompletely compliant

IGC code

Environmentallyconscious and safe

LNG fueled vessels require that boil off gas be treated safely andappropriately. The VOLCANO "MECS-GCU" gas combustion unit
combustion treats boil off gas to help eliminate the release of methane
gas into the atmosphere.

MECS-GCU helps to decrease
your environmental burden"Methane" is a major component of
LNG (liquefied natural gas) fuel andhas a global warming potential 25
times that of carbon dioxide!
The release of combustible CH4gases into the atmosphereis prohibited under theIGF code*1.

CH4CH4

Code Of Safety For*1. InternationalShips Using Gases Or Other
Low-Flash Point Fuels

When?

Boil off gas treatment process in vessels* An example only

1 LNG tank pressure adjustment

If the engine cannot completely consume the gas,
the boil off gas will need to be treated in order toadjust the pressure inside the tankN2 gas
LNG

23

2 Inert gas treatment during LNG bunkeringGas valve unit

Boil off gas becomes mixed with inert gas inside pipes,
and must be treated when bunkering
Gas let out from the tank during initial bunkering,when docking, or when performing maintenance workon the tank must be treatedengine•Main•Generator•Boiler, etc.

13 LNG tank cooling down / gas-freeing

LNG tank

MECS-GCU

Vaporizer
Buffer tank

VOLCANO Gas Combustion Unit (GCU) featuresCan
be installed
小型船舶にも設置可
even in smallvessels
Has already beensuccessfully installedin LNG fuel tug-boats

Combustsgas
どんな比率のガスも燃焼
of any ratio
Capable of treatment
up to inert gas 100%
(Gas/Oil simultaneousmixed combustion)

Combustseven
ガス温度が低くても燃焼
low-temperaturegas
Supports gas at
0°C or even -150°C

Compatible
広がる with
対象船舶
a wide range ofvessels
Can be used in many typesof projects, such as installedon tug-boats, used forbunkering vessels, or as
possible backups for othertreatment devices

Low
低ランニングコスト
running cost
Consumes less power
during operation thanreliquification

Gas Combustion Unit for
LNG Fueled Vessel
Specifications and overview
TYPE
Combustion rate
Gas pressure**Dimensions

52kg/h*MECSG25

MECSG50

MECSG100

MECSG150

MECSG200

MECSG300V

MECSG500VMECSG750V

MECSG1000V

2550

100

150200

300

500

750

1000

1

From free flow to 1.0*

MPaG

Lengthmm

2,530

3,200

4,000

4,500

5,000

Widthmm

926

850

1,200

1,300

1,500

Heightmm

2,015

2,300

3,100

3,500kg

600

1,300

2,000

2,700

Weight (a b)*53

φ2,400*φ2,500*φ2,700*φ2,900*

4,000

5,100

6,100

7,200

7,500

3,500

4,200

4,650

5,800

6,700

4CH4:100% (as low calorific value 50 MJ / kg)*1.
*2. Gas supply pressure at gas valve unit inlet"Free flow" is when gas is supplied at the tank pressure without pressurizing boil off gas*3.
*4. Vertical type hull dimensions*5. Dimensions and weight values are for reference onlyConfiguration
Pilot burner
pump unit

Flame eye
Pilot burner

FD fan forfurnace
cooling-air

444

Also supports remote control panels
Compatible with classification rules

Remote controlpanel

Also supports redundancy
GCU advantages

Solenoid valve
board•Lower operation cost than gas treatment methods that
consume power (such as reliquification)•Gas/Oil simultaneous mixed combustion using diesel oil
provides stable combustion

MECS-GCU

FD fan forcombustion-air

Gas valve unit

Control panel

Possible vessel types for installation•All types of gas fueled vessels (from tug-boats to VLCC class vessels)•Gas fueled bunkering vessels, etc.

* Not just LNG gas fuel! Supports various kinds of gas fuels.

VOLCANO solution for LNG fueled vessel issues
Combust and treat Boil Off Gas

VOLCANO Gas Combustion Unit (MECS-GCU)

VOLCANO Gas/Oil simultaneous mixed combustion
DF burners for boiler
Considering using gas fuel even in your boilers? Our "Vignis" and "SFFG-II" Gas/Oilsimultaneous mixed combustion DF burners are capable of completely combusting unburnt gas.

Use/treat Boil Off Gas as fuelCombustion Engineering Expert
VOLCANO Co., Ltd. provides products for
LNG as fuel and solution for LNG utilization,
based on our experiences on Gas/Oil simultaneous mixed combustion DF burner for
Marine-use, Gas burner for Industrial-use andUltra-low NOx burner for Industrial-use.

VOLCANO Combustion
Test Site responsible forverification testing
during the developmentof MECS-GCU

20190701-01MECS-G01EE