Low temperature boiler fired with agriculture biomass
author:
TOMASZ GOLEC, GRZEGORZ NEHRING
ORCID ID:
0000-0001-9090-9899, 0000-0002-5726-4061
No:
3/2021 Instal p. 11-20
DOI:
10.36119/15.2021.3.1
The article is a summary attempt of the research work carried out by the Institute of Power Engineering (IEn) as part
of the BioCHP project. The purpose of the project was to develop and prepare for the implementation of a CHP
installation producing electricity and heat from waste micronized biomass burned in a pressure combustion chamber
and supplying the gas turbine directly
IEn, as a partner of this project, was tasked with developing a boiler technology that can be powered both by
a large stream of low-temperature exhaust gases from the turbine and by a small stream of high-temperature
exhaust gases resulting from the combustion of biomass in the furnace chamber of that boiler. As a result, a hybrid
boiler was designed and built with a pre-combustor equipped with a low temperature combustion chamber
eliminating the risk of boiler slagging when burning biomass with a low ash melting point.
The article describes the methods that accompanied the boiler design process from the construction of the biomass
burner model to the technical design of the biomass burner, low-temperature furnace chamber and the entire boiler
with a heat output of 10 MW.
Much attention has been paid to how the combustion process is organized in the pre-combustor chamber and the
methods of obtaining a stable ignition of the dust-air mixture. Both the starting oil burner and plasma igniters were
tested at work.
The final result of the work is a working demonstration plant located on the premises of the heating plant in
Karczew, where the boiler tests were carried out, which confirmed that it ensures stable heat production from
micronized biomass and meets the current emission standards.
Keywords:
About Authors:
dr inż. Tomasz Golec https://orcid.org/0000-0001-9090-9899 – Instytut Energetyki, Pion Cieplny e-mail: tomasz.golec@ien.com.pl,
mgr inż. Grzegorz Nehring https://orcid.org/0000-0002-5726-4061 – Instytut Energetyki – Zakład Procesów Cieplnych; Politechnika Warszawska – Instytut Techniki Cieplnej, grzegorz.nehring@ien.com.pl