Alfa Laval Aalborg OM-TCi

Steam boiler for gas and various fuels, including

methanol and biofuels

Aalborg OM-TCi sets the new standard for fuel economy

in marine boilers. High efficiency means less fuel

consumption, thereby lower operating cost for the ship

owner and reduced emissions to our environment.

Aalborg OM-TCi is a vertical boiler with a large furnace

and an enhanced convection part. The standard boiler

can be fired with gas and various fuels, including

biofuels, methanol, and other alternative fuels.

The capacity range of Aalborg OM-TCi is 8.000–20.000

kg/h. It has been developed based on our well-proven

technology and long experience

Furnace

Aalborg OM-TCi consists of a large furnace with gas

tight membrane walls. A sufficient number of down

comers ensures safe natural circulation, and adequate

furnace dimensioning guarantees good combustion

and low emission, moderate loading and low material

stresses.

Convection part

A cylindrical shell surrounds the smoke tubes and the

water/steam space. These smoke tubes have enhanced

heat transfer features guaranteeing low exhaust gas

temperature and thus high efficiency.

Burner & Control system

The boiler will be delivered with a multi fuel-burner,

which is designed to automatically modulate according

to the system’s heat demand. The burner is designed

for a high turndown ratio with complete combustion

at low oxygen levels. To ensure optimal combustion,

pressurized air or steam is used as an atomizing media.

The burner adjusts automatically, but the operator can

switch to manual control if needed. The burner system

allows the use of various alternative fuels, as well as the

combustion of boil-off gas from gaseous fuels (GCU

functionality, gas combustion unit).

The burner and the boiler are controlled by a

specifically designed and standardized control system,

which is included in the delivery. This system consists

of all the required components for the heat recovery

system according to Alfa Laval standards, including

the main control with HMI-panel located in each

engine room. The control system enables connectivity

and intelligent data collection, and it has the capacity

for remote support. In systems with two engine

rooms, each has its own control system, but they

communicate and work seamlessly together, enabling

flexible operating modes.

High efficiency, reduced fuel consumption and

less emissions

The upgraded thermal design with optimized flue gas

oxygen content ensures a total efficiency of 89–92%

depending on boiler load conditions, which is in aver

age 6% above the typical boilers in this capacity range.

This means less fuel consumption and lower CO2

and NOx emission levels. On a 16.000 kg/h boiler operating

5.000 hours at 75% load every year, this means USD

170.000*) saved on fuel cost annually.

*) at the fuel price of 650 USD/ton

Features & benefits

• High thermal efficiency range 89 - 92% with low fuel

consumption as a standard concept

• Thermal efficiency can be further improved up to 93 -

96 % (LHV) by adding external economizer

• The standard boiler can be fired with gas and various

fuels, like methanol and biofuels.

• Option for electrical steam generation with shore-pow

er and clean electricity

• Proven design, ready to install and easy to operate

and clean

System solutions

Alfa Laval offers total solutions. All marine accessories

for heat recovery and auxiliary boiler systems can be

supplied by Alfa Laval. Aalborg OM-TCi can operate as a

steam drum for the exhaust gas economizers onboard.

Design data

• Thermal output: up to 14 MW

• Steam capacity: 8.000 - 20.000 kg/h

• Design pressure: 10 bar(g)