Evolution of gases in the primary pyrolysis of different sewage sludges

Conesa, Juan A.; Marcilla, A.; Moral, R.; Moreno‐Caselles, J.; Pérez‐Espinosa, A.

doi:10.1016/s0040-6031(97)00474-7

Cited by 111 publications

(70 citation statements)

References 14 publications

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“…De acordo com a Figura 3, as perdas de massa ocorrem em regiões distintas, sugerindo a ocorrência dos três estágios principais de decomposição do lodo de esgoto sugeridos por Conesa et al (1998) Os aspectos visuais das duas amostras pirolisadas são bastante distintos, confirmando que o produto final depende da composição inicial do lodo. O material produzido do lodo proveniente da ETE Subaé apresenta uma cor marrom, o que revela uma concentração elevada de óxidos inorgânicos e baixa concentração de carbono.…”

Section: Resultsunclassified

Enriquecimento De Carbono Em Carvões Obtidos a Partir Do Lodo De Esgoto

et al. 2013

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Section: Resultsunclassified

Enriquecimento De Carbono Em Carvões Obtidos a Partir Do Lodo De Esgoto

et al. 2013

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“…Pyrolysis is a process of organic material decomposition in an inert atmosphere at high temperature, forming gaseous, liquid and solid products (Caballero et al, 1997;Conesa et al, 1998;Fonts et al, 2009;Gasco et al, 2007). Research in the field of sludge pyrolysis is focused mainly on the influence of process conditions on the yield of pyrolytical products and their utilisation.…”

Section: Pyrolysis Of Wastementioning

confidence: 99%

“…The yield of individual products is influenced mainly by the final temperature achieved and the heating rate (Caballero et al, 1997;Conesa et al, 1998;Fullana et al, 2003;Inguanzo et al, 2002). A high heating rate and final temperature up to 500 °C lead to a more complete thermal decomposition and thus production of a maximum amount of pyrolytic liquid and a minimal amount of pyrolytic coke (Caballero et al, 1997;Conesa et al, 1998;Inguanzo et al, 2002;Sánchez et. al., 2009).…”

Section: Pyrolysis Of Wastementioning

confidence: 99%

The influence of hygienisation of sewage sludge on the process of pyrolysis

Čížková¹,

Juchelková²,

Raclavská³

2011

Chemical and Process Engineering

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The aim of this work was to determine the influence of liming on the process of pyrolysis. Three samples of sludge from two wastewater treatment plants were selected for this study on pyrolysis: sludge without liming and limed sludge from the Central Wastewater Treatment Plant in Ostrava and sludge from the Wastewater Treatment Plant in Sviadnov. The samples had different content of calcite (CaCO 3 ). The limed sludge contained 7% of CaCO 3 , sludge without liming 3.8% and sludge without liming from WWTP Sviadnov contained 0.5% of calcite. The results of laboratory pyrolysis proved that limed sludge released the maximum amount of carbon -55.46 %, while sludge without liming from WWTP Sviadnov released only 48.92%. Calcite produces during its decomposition CaO and the product influences the pyrolysis process because it supports cracking of volatile organic compounds

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“…Pyrolysis is a process of thermal degradation of the organic material in an inert atmosphere where, by influence of high temperatures, a complicated series of reactions occurs that produces products such as cpe.czasopisma.pan.pl; degruyter.com/view/j/cpe the pyrolysis gas, pyrolysis liquid and pyrolysis coke (Conesa et al, 1998;Fronts et al, 2009;Nowacky, 2001;Staf, 2005). In comparison with gasification, no oxygen takes part in the process (Pastor et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Energy Balance Sheet of a Semi Operational Thermic System

Honus¹,

Sassmanová²,

Frantík³

et al. 2014

Chemical and Process Engineering

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The article is focused onthe energetical balance of a technical system for the conversion of crushed tyres by pyrolysis. Process temperatures were set in the range from 500 to 650°C. Mass input of the material was 30 kg per hour. The aim of the article is to answer the following questions as regards the individual products: Under which process conditions can the highest quality of the individual products related to energy be reached? How does the thermal efficiency of the system change in reaction to various conditions of the process?On the basis of the experimental measurements and calculations, apart from other things, it was discovered that the pyrolysis liquid reaches the highest energetic value, i.e. 42.7 MJ.kg -1 , out of all the individual products of the pyrolysis process. Generated pyrolysis gas disposes of the highest lower calorific value 37.1 MJ.kg . From the energetic balance, the thermal efficiency of the experimental unit under the stated operational modes ranging from about 52 % to 56 % has been estimated. Individual findings are elaborated on detail in the article.

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Evolution of gases in the primary pyrolysis of different sewage sludges

Cited by 111 publications

References 14 publications

Enriquecimento De Carbono Em Carvões Obtidos a Partir Do Lodo De Esgoto

Enriquecimento De Carbono Em Carvões Obtidos a Partir Do Lodo De Esgoto

The influence of hygienisation of sewage sludge on the process of pyrolysis

Energy Balance Sheet of a Semi Operational Thermic System

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