Project Facts

• Initialisation year 2008

• Fuel Wood Chips

• Humidity in fuel < 55 %

• System size 18 MW

• Fuel consumption 9,3 t/h

• Steam production 25 t/h

• Operating hours yearly 8000

• Pressure operation 10 bar

• Efficiency 91,5 %

History of Akzo Nobel –

Akzo Nobel is one of the largest

salt producers in the world. The

Raw salt, which is 100 C, are

extracted from underground,

and pumped in a 32 km long

pipe line to refinery. The raw salt

are heated up to 32 C, where it

undergoes a chemical treatment,

then the salt evaporated, by

using steam and excreted as wet

road salt.

In 2005, Akzo Nobel started a

project to investigate the

potential use of alternative

biomass fuels to replace the

existing high consumption of

NaturalGas.

WEISS was working closely with the client, and together were designed the most optimal solution for a

biofuel Steam boiler plant.

Solution.

Weiss developed an 18 MW biofuel boiler, which could provide 25 t / h steam at 10 bar. This steam is used

for evaporation of raw salt.

Furthermore, the plant was equipped with a heat Recover / condenser unit that provides 3 to 5 MW. This

energy is used for preheating of raw salt.

The plant concept.

WEISS designed a boiler plant divided into sections

which result in a short installation time.

The boiler house was based on pre fab standard

materials.

WEISS Boiler design

WEISS choose a boiler design, divided into 2 parts –

by this – the boiler parts could be shipped in whole

pieces – which avoided onsite welding

Wood chips.

The control and combustion system are design to

use standard wood chips with a moist content at

45 % - by switching the boiler into “wet” mode,

wood chips up to 55% can be used, this ensure the

customer the best flexibility by purchase wood

chips

Case Study-

Process Steam Biomass Boiler. – Salt Refinery

“Weiss Baltic Group”Tiltu st 16, Klaipėda, LT-91249 Lithuania, Tel/Fax +370 52 077957 www.weissbaltic.euE-Mail: info@weissbaltic.eu

Profit – benefit

During evaporation of raw salt- larger

amount expensive fossil fuel are used to

generate steam. The customer chose to

invest in a WEISS biomass boiler system

– specific designed to suit into the

steam demand. In this case, the

customer saved more than 50% of its

cost for natural gas.

To be independent of the volatility of

energy prices is a great advantage for

the customer and the investment pay

off in a few years.

Wood chips

consumption

Energy / steam

achievable ( Calorific value 19,2 Mj/kg –

water content < 50 % )

Energy

Steam

( 10 bar)

[Kg/h] [kW] [kg/hour]

500 1.000 1.600

1000 2.000 3,200

2,000 4,000 6,400

3,000 6.000 9,600

4,000 8000 12800

5100 10000 16600

6100 12000 19200

7100 14000 22400

8100 16000 25400

9100 18000 28800

10200 20000 32000

Green energy – environment

Burning waste products instead of

stowing it, the energy is recovered and

converted to energy. Thereby a double

climate effect is obtained, since the

production of energy from bi-product

results in not only a substantial

reduction of the consumption of fossil

fuel, but also a reduction of the CO2

emissions.

The flue gas is cleaned by the latest

technique in filter systems. WEISS fulfill

all national and local emissions

requirements

WEISS Range of boiler capacity

Steam Boiler

Energy: From 1 MW to 20 MW

Steam: From 1,5 t/h to 32 t/h

Pressure. Typical 12 Bar

Proven technique.

WEISS Biomass Boiler plants only use well proven Technologies

and components. It’s your guarantee for a durable system with

unexpected shutdowns` and unforeseen expenses.

WEISS biomass boiler plants has very low maintenance

requirements, and are full automatic operated – Which result

in lower labor cost.