Abstract
Combustion of pure avian waste is strongly affected by its humidity content. According to the results of composition analysis, the initial humidity reaches up to 50%, inhibiting direct combustion initiation and development. Drying of poultry waste is an alternative, but simple relatively long-term storage or thermal pre-processing, complicates the technological process of energy recovery and increases the associated costs. Co-combustion represents a promising solution to enrich the heating value of raw poultry manure. Experiments using biomass (in a mass fraction of up to 30%) led to positive results in terms of efficiency. It is highlighted that the process depends on the quality of the woody biomass used for the mixture, but also on its bulk density, which causes an accelerated diffusion of air and influences the burning speed. This paper presents the experimental investigations on the co-combustion of poultry manure and woody biomass, performed on a 55 kW pilot boiler equipped with a post-combustion grate. The focus of the analysis is on the influence of the biomass bulk density and its heating value on the co-combustion process. The results obtained favor the development of a technology that is easy to apply and has a reduced cost. The technology investigated here is suitable for onsite applications in poultry farms, enabling meeting the energy demand based on co-combustion of resulting poultry waste.
Highlights
For the past decades, research interest in the energy field focuses on harmful emissions abatement and renewable energy technologies development and integration [1], [2]
It is highlighted that the process depends on the quality of the woody biomass used for the mixture, and on its bulk density, which causes an accelerated diffusion of air and influences the burning speed
This paper presents the experimental investigations on the co-combustion of poultry manure and woody biomass, performed on a 55 kW pilot boiler equipped with a post-combustion grate
Summary
Research interest in the energy field focuses on harmful emissions abatement and renewable energy technologies development and integration [1], [2]. It is remarked as, according to statistics released by the International Renewable Energy Agency, renewable energy sources (RES) almost doubled their cumulated generating capacity over the last decade [3]. The research developed in this paper aims to evaluate the efficiency of poultry manure co-combustion in combination with different types of solid biomass, such as forestry or agricultural.
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