Combustion of Hard Coal and Alternative Fuels in a Boiler with an Innovative Retort Burner

ABSTRACT

A universal innovative burner with vertical feeding of fuel was developed. The burner allows for installation in coal-fired boilers of various manufacturers and to meet the requirements related to emission limits and thermal efficiency. The paper presents the results of thermal and emission tests after the application of innovative construction solutions of the retort burner in a water boiler using eco-pea coal and alternative fuel produced in the form of pellets from fine coal and coal sludge. Obtained results were applied to current requirements related to emissivity and thermal efficiency for boilers with automatic fuel hoppers equipped with a retort burner. Combustion in the developed innovative retort burner for eco-coal and alternative fuel pellets allowed compliance with the highest emission classes for gas and dust substances as well as high combustion efficiency.

KEYWORDS:

• Coal
• Coal Sludge
• Alternative Fuel
• Water Boiler
• Emission

Highlights

An universal innovative burner with a vertical fuel feeder has been developed.

Combustion of hard coal and low grade alternative fuel were compared.

Application of the innovative burner allowed to obtain the class 5 of emissivity.

Emission standards are met both during the combustion of coal and low-grade fuel.

Additional information

Funding

The burner was developed on the basis of research carried out as part of a project co-financed from the Regional Operational Program of the Małopolska Region for 2014–2020 within the priority axis 1 ‘Knowledge Economy’, Measure 1.2 ‘Research and Innovation in Enterprises’, Sub-measure 1.2.3 ‘Innovation Vouchers’ No. RPMP.01.02.03-IP.-01-12-031/16. The research work was supported by Ministerstwo Nauki i Szkolnictwa Wyższego [Grant number 11176018].