Investigation of sewage sludge preparation for combustion process

Magdziarz, Aneta; Wilk, Małgorzata; Kosturkiewicz, B.

doi:10.2478/v10176-011-0024-4

Cited by 20 publications

(14 citation statements)

References 11 publications

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“…The main groups of products arising from the pyrolysis of sewage sludge are as follows [33,35]: • A gas fraction, mainly consisting of hydrogen, methane, carbon dioxide, and carbon monoxide, along with a few minor gases; the calorific value of the pyrolytic gas is approximately 15 MJ/m 3 [36].…”

Section: Pyrolysis and Gasificationmentioning

confidence: 99%

Sewage Sludge-To-Energy Management In Eastern Europe: A Polish Perspective

Werle

2015

Ecological Chemistry and Engineering S

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Abstract:The Sewage Sludge Directive 86/278/EEC was adopted about 30 years ago with a view to encourage sewage sludge reuse in agriculture and to regulate its use. Meanwhile, some EU Member States have adopted stricter standards and management practices than those specified in the Directive. In particular, the majority of Member States has introduced more stringent standards for sludge quality, including stricter limits for most potentially toxic elements, organic contaminants and other elements. In general, untreated sludge is no longer applied and in several Member States it is prohibited. In some cases, stringent standards have resulted in an effective ban on use of sludge in agriculture. Moreover, the implementation of the Urban Wastewater Treatment Directive 91/271/EC should increase EU production of sewage sludge, thus enhancing problems related to sustainable sewage sludge management. Additionally, European legislation prohibits the landfill and water deposits of sewage sludge. The latest trends in the field of sludge management, ie combustion, pyrolysis, gasification and co-combustion, have generated significant scientific interest. This trend is specially strong visible in "new" EU Members countries which have to introduce strong EU Directive in their low system. Here the review the state of knowledge and technology in thermal methods for the utilization of municipal sewage sludge to obtain useful forms of energy such as pyrolysis, gasification, combustion, and co-combustion taking into consideration Poland situation is presented.

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Section: Pyrolysis and Gasificationmentioning

confidence: 99%

Sewage Sludge-To-Energy Management In Eastern Europe: A Polish Perspective

Werle

2015

Ecological Chemistry and Engineering S

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“…In order to achieve such growth, development of new technologies regarding thermal converting waste will be necessary. For several years in Department of Manufacturing Systems, AGH University of Science and Technology, Krakow, research in order to develop new technologies in binding municipal sewage sludge [3][4]. Results confirmed possibility of obtaining briquettes from wastes using roll presses, which are characterised by compressive strength, allowing transporting the raw material and later utilising it in stoker-fired boilers installed in incineration plants.…”

Section: Introductionmentioning

confidence: 96%

Analysis of briquetting process of sewage sludge with coal to combustion process

Kosturkiewicz

Janewicz

2016

E3S Web Conf.

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Abstract.Energy recovery from sewage sludge can be achieved by several thermal technologies, but before those processes sewage sludge requires special pretreatment. The paper presents the investigation of the sewage sludge with coal briquettes as a fuel for combustion process. Research is conducted at Department of Manufacturing Systems and Department of Thermal Engineering and Environmental Protection, AGH University of Science and Technology to develop a technology of briquette preparation. The obtained results showed possibility of briquetting of municipal sewage sludge with coal in roll presses, equipped with asymmetric thickening gravity feed system. The following properties were determined for the obtained briquettes: density, drop strength and compressive strength. Based on physical and chemical analysis of prepared briquettes it was confirmed that briquettes have good fuel properties to combustion process. Thermal behaviour of studied sewage sludge and prepared mixture was investigated by thermogravimetric analysis (TG). For the thermo gravimetric analysis (TG) the samples were heated in an alumina crucible from an ambient temperature up to 1000 C at a constant rates: 10 C/min, 40 C/min and 100 C/min in a 40 ml/min flow of air.

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“…Moreover, the laminar burning velocity controls other important combustion characteristics, such as the flame's spatial distribution. Additionally, the laminar burning velocity is one of the key indicator that helps validate models of the chemical kinetic [3]. Different procedures have been described as a measurement method of burning velocity of gasification gas, such as flat flame, Bunsen flame, stagnation flame, spherically propagating flame, counter-flow flame and heat flux method [4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the possibility of the sewage sludge gasification gas use as a fuel

Werle

Dudziak

2016

Ecological Chemistry and Engineering S

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Abstract:Biomass is one of the major sources of energy that is estimated to contribute between 10% and 14% of the world's energy supply. Over the past several years, many societies have established policy targets to increase their production of renewable energy from biomass. The thermo-chemical utilization of biomass includes 4 technologies: the most popular combustion and co-firing, and unconventional: pyrolysis and gasification. Gasification is considered to be the perspective technology because has many advantages in comparison to traditional process of combustion: (1) limited emission of the SO2, NOx, oxides of the heavy metals and no risk of the dioxins and furans emission due to reducing atmosphere in the gasification reactor, (2) volume of the gasification gas is smaller in comparison to flue gases from combustion due to the reducing atmosphere, (3) gasification process produce gas which is potential gaseous fuel in power engineering (engines, gas turbines and boilers) and chemistry. Unfortunately, composition of the gasification gas is always described as a variable. Moreover, it depends on the conditions of the process and quality of the base fuel. For this reason, the use of gasification gas can't be very easy. For this reason, the knowledge of the basic properties of the gas is very important. Laminar burning velocity is assumed as an important quantity for in the process of the design equipment for the gas utilization. The numerical and experimental results of the laminar burning velocity of sewage sludge gasification gases were presented. Experimental Bunsen burner method was used. Cosilab 3 © software for numerical analysis was used. GRI-Mech 3.0 mechanism of gas oxidation was implemented. As a result of the work, the set of the parameters where the sewage sludge gasification gas combustion process is stable with effective heat release, were presented.

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Investigation of sewage sludge preparation for combustion process

Cited by 20 publications

References 11 publications

Sewage Sludge-To-Energy Management In Eastern Europe: A Polish Perspective

Sewage Sludge-To-Energy Management In Eastern Europe: A Polish Perspective

Analysis of briquetting process of sewage sludge with coal to combustion process

Evaluation of the possibility of the sewage sludge gasification gas use as a fuel

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