Q-Rohr® DFE - Flameless Explosion Venting for exhaust ducts of Dual-Fuel Engines

New IMO regulations, new challenges

 

The situation
The next phase of the International Maritime Organization (IMO) emission regulations for shipping intends to reduce the permitted sulphur and nitrogen content of fuel from the current level of 3.5 % to a level of 0.5 % in 2020. Due to the IMO tier 2 and 3 regulations, the shipping industry will increasingly be required to use alternative sources of propulsion such as ­dual-fuel engines and LNG-powered plants.

Flameless venting Q-Rohr DFE For ship engines
Q-Rohr® DFE: the most cost-effective protection solution for Dual-Fuel Engines.

The challenge
When an engine is running on gas, a fault in the engine can allow a ­flammable mixture of gas and oxygen to occur in the exhaust system. In the worst case scenario, this could ignite and cause an explosion. The result would be a failure of the drive system and electrical power supply. Essential instruments such as radios, radar and navigation equipment could be adversely affected. In ­addition, exploding sections of the plant would create a serious risk of injury to persons working in the engine room.

Q-Rohr® DFE

REMBE® has used its many years of experience in explosion safety to develop a system specifically for Dual-Fuel Engines. It is lightweight and has a compact design that provides ­outstanding levels of safety.

Q-Rohr® DFE permits flameless explosion venting in the ship’s hull and thus protects the surrounding area against the ­consequences of an explosion. The ship can return to normal operations very quickly after an explosion occurs.

Q-Rohr® DFE

The compact, lightweight design of Q-Rohr® DFE enables it to be installed even in confined spaces.

Your advantages

  • Maritime class certification in accordance with DNV-GL, LR, BV, ABS.
  • Rapid restart of operations.
  • Flameless pressure venting in the ship’s hull.
  • 100 % seal tightness, to eliminate danger of asphyxiation.
  • Compact, lightweight design.
  • 100 % venting efficiency.
  • Customized opening pressure.
  • 100 % stainless steel for corrosion resistance.
  • Connection flange in accordance with DIN 86044.
  • Minimal maintenance required, visual inspection by a technician is sufficient.
  • REMBE® stainless steel mesh design ensures a high level of noise ­reduction ­during normal operation and in the event of an explosion.

Certification

Patents:
DE 38 22 12;
US 7,905,244
                



Images

Flameless venting Q-Rohr DFE onshore
Q-Rohr® DFE: the most cost-effective protection solution for Dual-Fuel Engines.
Flameless venting Q-Rohr DFE offshore on a ship engine
New emissions regulations:
Current diesel engines will soon have to be switched to alternative fuels.
Technical Data
Technical information and measurements Q-Rohr
Q-Rohr® DFE Technical data in accordance with DIN 86044 Series 1/Series 2
DN
[mm]
max. H
[mm]
max. C
[mm]
Ø C
[mm]
Ø D [mm]k [mm]Ø d2 [mm] b [mm]No. of bolts
Recommended bolts
Weight
[kg]
Series 1Series 2Series 1Series 2Series 1Series 2Series 1Series 2Series 1Series 2Series 1Series 2
20040041035032031928028918181612812M16M1621
300600500450440424395394221816151220M20M1637
400600600550540507495477221816151620M20M1647
500600700650645609600579221816152028M20M1660
600900820770754711700681221820152032M20M16105
700900920870856813800783221820152436M20M16115
80012001020970958915900885221820152444M20M16150
900120011201070106010171010987221820152848M20M16175
10001400122011701162111911101089221820153252M20M16215
11001400132012701266122312101193221820153260M20M16245
12001600143013801366132313101293221820153664M20M16300
13001600153014801466142314101393221820154068M20M16335
14001600163015801566152315101493221820154072M20M16380
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