Biomass Boilers

Thorne International Boiler Services Ltd are experienced at designing, supplying and installing biomass installations, which can be designed for wood, general, animal and clinical waste fuel systems. We will provide initial design layouts after consultation with the client, project manage the complete boiler-house installation including pipework and control & instrumentation and then carry out the commissioning process with our experienced in-house team.

TIBS experience in biomass plants is as follows:


Our in-house design team and chartered engineers are experienced at designing or adapting existing water-tube and shell boilers to use biomass firing systems and including ancillary equipment to ensure the carry-over from combustible products does not cause unexpected shutdowns during operation.


Over the years TIBS have worked with many fuel handling system types and are experienced at ensuring the interface to the waste heat boiler operates as expected to ensure temperatures and pressures are within specification. Also, when clients find out their fuel supply is outside the expected range, TIBS can support clients in adapting their biomass process to accommodate the fuel variation supplied.


Many biomass boilers have economisers included to increase the overall efficiency of the plant which can be designed, supplied and installed by TIBS, plus the inclusion of superheaters to generate superheated steam, so that a steam turbine can be connected to supply electricity to the grid. Again TIBS are expected at installing this interface for the customer as well.


We have designed, supplied and installed many hotwell tanks, deaerators and RO water treatment systems, to ensure the water / condensate quality and flow rate to the steam boilers is within the plant operational conditions, so that internal damage does not occur.

Typical challenges for biomass plants are:

• The wetness of the fuel in wood biomass plants when delivered to site, because the moisture content
• The dryness of the fuel in wood biomass plants can cause high levels of dust in the building
• The CV level in general waste plants having high levels of variation from one delivery to the next
• The erosion levels within internal ducting systems, from higher than expected operating temperatures

In response to these problems, TIBS can support clients by making additional thermal calculations or designing internal additional parts such as erosion shields or tube ferrules to increase the life expectancy of the plant.