The effect of additives on the co-pelletization of sewage sludge and extraction residue on combustion behavior and off-gas emission reduction

Lei, Tingzhou; Huang, Hao; Tan, Mengjiao; Huang, Zhongliang; Li, Changzhu; Liu, Peng; Zhou, Xuchen; Zhang, Xuan; Huang, Jing; Li, Hui

doi:10.1016/j.biombioe.2024.107181

Cited by 1 publication

(1 citation statement)

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“…Another possibility for the optimisation of the burner operation with air gradation for combustion is changing the geometry of air supply channels in line with the burner optimisation method described earlier in this publication [33]. Gradation of the combustion air is also an essential process that should be carried out by a solid fuel boiler dedicated to domestic solutions (power not more than 50 kW) in the event of the further development of non-normative fuels, especially those based on domestic waste, which have high energy potential and can be an alternative, renewable energy source [34][35][36].…”

Section: Resultsmentioning

confidence: 99%

Emission of Harmful Substances from the Combustion of Wood Pellets in a Low-Temperature Burner with Air Gradation: Research and Analysis of a Technical Problem

Ciupek,

Nadolny

2024

Energies

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This paper includes a discussion of the results of tests concerning changes in the thermal and emission parameters of a boiler fuelled with wood biomass under the influence of air gradation in the combustion process. The test results ensure insight into the combustion process of wood biomass with air gradation, which significantly affected the operation of the device, increasing the mass concentration of the emitted nitrogen oxide (NOx) by combustion temperature lowering, especially in the afterburning zone. The authors observed an increase in the emission of particulate matter (PM) and carbon monoxide (CO) related to the change in the combustion process stoichiometry. The tests were carried out with the use of a heating boiler equipped with an automatic pellet burner. Apart from the mass concentration measurement of the pollution emitted, the tests focused on the measurements of temperature and oxygen levels in the flue gas. The objective of the tests was to confirm the applicability of the air gradation techniques in biomass combustion in order to reduce the emission of harmful substances from heating boilers, which is a technique that has recently been used in this group of devices. The test results obtained confirm the necessity for reorganising the technical systems of the currently used pellet burners and implementing further empirical tests.

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