NEW TECHNIQUES FOR MITIGATING CORROSION IN MULTICOMUSTIBLE BIOMASS POWER PLANTS

Project facts

Project promoter:
ACCIONA ENERGIA SA
Project Number:
ES02-0161
Target groups
Small and medium-sized enterprises (SME)
Status:
Completed
Initial project cost:
€239,609
Final project cost:
€187,348
From EEA Grants:
€ 23,702
The project is carried out in:
Spain

Description

The MICORMASS PROJECT focuses on the fact that the content of alkali (potassium, sodium) and chloride in the biomass generates deposits at relatively low temperatures, which causes serious problem in the operation of the power plants. In addition to this, chlorine speeds up the corrosion of the metal walls of the boilers. Each biomass has different alkali and chlorine content and hence the deposition and corrosion problem in terms of the raw material varies. The appearance of areas of corrosion in pipes and equipment are a common problem in biomass power plants. It can cause weakening of the wall thickness of pipes, leakage, reductions of the operational-lifetime of equipment and Increase in operation and maintenance costs. The main output of the project will be new techniques that will avoid corrosion problems in large biomass power plants. As a result, power plant operators will increase the number of hours that their utility is under production.

Summary of project results

The MICORMASproject is framed within the area of research on power generation from biomass. One of the main problems affecting the operation of a generation power plant is the breakage of tubes due to the appearance of corrosion in them and the appearance of areas with corrosion in them is a common problem The main objective of the project was to develop new strategies for the protection of the pipes that make up the superheater located inside of the boiler and air heaters from the effects of corrosion. Thanks to the project, a reduction of the corrosion in the biomass plants has been achieved. Besides, important knowledge about possible implementation actions to be developed over the next years in order to mitigate its effect has been acquired. Finally, regarding protection materials, although there are some materials with higher resistance to corrosion, it seems that the use of them will not increase the useful life of the equipment and it will imply a considerable increase in cos

Summary of bilateral results