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## Research of biomass pyrolysis process in installation with circulating carbonizer

### Magdalena Antonina Falkiewicz

#### Abstract

The first part of the work defines the concept of biomass and lists the types of raw materials used for energy purposes that are as follows: wood and waste from forestry, energy crops (in Poland the most popular are basket willow, Virginia mallow, Miskanthus and Jerusalem artichokes), agricultural waste such as straw, oilcake and municipal and industrial waste. Net calorific values and elemental composition of biomass and coal were compared. Next, the thermochemical conversion of biomass, which include combustion and co-combustion, gasification, pyrolysis and liquefaction, are discussed briefly. There are also mentioned biochemical transformation of biomass which lead to biofuels (trans-esterification, fermentation). The following section presents the use of charcoal, which is one of the products of wood pyrolysis. The process of carbon activation and examples of application of active carbon has been given. Gasification of charcoal as a method of obtaining more functional form of gas fuel is described as well as further ways of generator gas synthesis. Charcoal is also used in metallurgy, building sector and agriculture. In presented work the subject of the study was the process of wood chips pyrolysis. First part of the study was carried on alder chips at 430°C using different residence times at a given temperature - from a few to 70 minutes. Then the same procedure was carried out at 450 °C. The tests were repeated using beech chips. In each of the experiments, the yield of charcoal and liquid fraction was studied. The second stage of the research was the analysis of the composition of gases and liquid fractions produced in the pyrolysis process. According to the results the largest yield of charcoal obtained by carrying the process at 430°C for about 10 minutes and for about 30 minutes at 450°C. The pyrolysis gas consists mainly of carbon dioxide, nitrogen, carbon monoxide and methane and, to a lesser extent, hydrogen and oxygen. Large amounts of nitrogen may be the result of carrying out the pyrolysis in the air atmosphere. The concentration of combustible gases increases as the process progressed. The dependence of gas composition on the type of chips used in the pyrolysis process was found.
Diploma type
Engineer's / Bachelor of Science
Diploma type
Engineer's thesis
Author
Magdalena Antonina Falkiewicz (FC) Magdalena Antonina Falkiewicz,, Faculty of Chemistry (FC)
Title in Polish
Badanie procesu pirolizy biomasy w instalacji z cyrkulacyjnym karbonizatorem
Supervisor
Krzysztof Krawczyk (FC/CChT) Krzysztof Krawczyk,, Chair of Chemical Technology (FC/CChT)Faculty of Chemistry (FC)
Certifying unit
Faculty of Chemistry (FC)
Affiliation unit
Chair of Chemical Technology (FC/CChT)
Study subject / specialization
, Technologia Chemiczna
Language
(pl) Polish
Status
Finished
Defense Date
05-02-2019
Issue date (year)
2019
Reviewers
Paweł Maksimowski (FC/DH-EM) Paweł Maksimowski,, Department Of High-Energetic Materials (FC/DH-EM)Faculty of Chemistry (FC) Krzysztof Krawczyk (FC/CChT) Krzysztof Krawczyk,, Chair of Chemical Technology (FC/CChT)Faculty of Chemistry (FC)
Keywords in Polish
biomasa, piroliza biomasy, zastosowanie węgla drzewnego
Keywords in English
biomass, biomass pyrolysis, use of charcoal
Abstract in Polish
File
• File: 1
praca_inż._-_Falkiewicz_Magdalena_-_278354.pdf
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Identyfikator pracy APD: 29964

Uniform Resource Identifier
https://repo.pw.edu.pl/info/bachelor/WUT624b69650627406da42b66f33b58d1c5/
URN
urn:pw-repo:WUT624b69650627406da42b66f33b58d1c5

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