ΠΥΡΟΛΥΣΗ ΕΛΛΗΝΙΚΟΥ ΛΙΓΝΙΤΗ

THIS WORK CONCERNS GREEK LIGNITE PYROLYSIS IN A FLUID BED REACTOR AND IN NITROGEN ATMOSPHERE. THE EXPERIMENTAL SYSTEM HAS SOME ADVANTAGES: HIGH HEATING RATES,REAL ISOTHERMAL CONDITIONS AND ON-LINE MEASUREMENTS OF TOTAL GASES AND HYDROCARBONS PRODUCED DURING PYROLYSIS. IN THIS WORK THE INFLUENCE OF FIVE VARIABLES ON THE PYROLYSIS YIELDS WAS STUDIED. THESE VARIABLES ARE: TEMPERATURE, PARTICLE SIZE, TYPE OF COAL, INORGANIC CONSTITUENTS AND VOLATILES RESIDENCE TIME. IT WASCONCLUDED THAT PYROLYSIS TEMPERATURE IS THE MOST IMPORTANT VARIABLE WHICH AFFECTS THE YIELD AND DISTRIBUTION OF PYROLYSIS PRODUCTS. GREEK LIGNITE PRODUCES MAINLY GAS AND SOLID PRODUCTS. THE LIQUID YIELD IS VERY LOW. IN THE PRODUCED GASES THE OXYGEN COMPOUNDS CO2, CO ARE DOMINATED. A VARIETY OF HYDROCARBONS AND HYDROGEN ARE ALSO PRODUCED IN RELATIVELY HIGH QUANTITIES. FOR THE KINETIC STUDIES OF PYROLYSIS PRODUCTS THE ANTHONY AND HOWARD MODEL WAS APPLIED WHICH WAS FOUND SATISFACTORY. THE NON-IDEALITY OF EXPERIMENTAL SYSTEM WAS TAKEN INTO ACCOUNT FOR THE KINETIC STUDIES. FINALLY A GENERAL MODEL WAS DEVELOPED WHICH INCLUDES THESIMULTANEOUS HEAT AND MASS TRANSFER ALONG WITH THE KINETICS OF PYROLYSIS REACTION. USING THE TRANSPORT PHENOMENA MODEL THE EFFECT OF THE VARIOUS RESISTANCES ON THE PYROLYSIS PRODUCTS WAS STUDIED.

Grantor dc:publisher

Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

Year dc:date

1991

Authors dc:creator

• Lappas, Angelos
• Λάππας, Άγγελος

• FLASH PYROLYSIS, EVALUATION OF GREEK LIGNITE
• FLUID BED REACTOR, FLASH PYROLYSIS
• GREEK LIGNITE, FLUID BED REACTOR, EVALUATION
• KINETIC STUDIES, COAL PYROLYSIS, LIGNITE
• KINETICS, TRANSPORT PHENOMENA
• PYROLYSIS, LIGNITE, FLUID BED REACTOR
• ΑΞΙΟΛΟΓΗΣΗ, ΚΙΝΗΤΙΚΗ, ΦΑΙΝΟΜΕΝΑ ΜΕΤΑΦΟΡΑΣ
• ΕΛΛΗΝΙΚΟΣ ΛΙΓΝΙΤΗΣ, ΡΕΥΣΤΟΣΤΕΡΕΑ ΚΛΙΝΗ
• ΚΙΝΗΤΙΚΗ ΜΕΛΕΤΗ, ΠΥΡΟΛΥΣΗ ΑΝΘΡΑΚΑ, ΛΙΓΝΙΤΗΣ
• ΠΥΡΟΛΥΣΗ, ΛΙΓΝΙΤΗΣ, ΡΕΥΣΤΟΣΤΕΡΕΑ ΚΛΙΝΗ
• ΡΕΥΣΤΟΣΤΕΡΕΑ ΚΛΙΝΗ, ΤΑΧΕΙΑ ΠΥΡΟΛΥΣΗ
• ΤΑΧΕΙΑ ΠΥΡΟΛΥΣΗ, ΑΞΙΟΛΟΓΗΣΗ ΕΛΛΗΝΙΚΟΥ ΛΙΓΝΙΤΗ
• Engineering and Technology
• Chemical Engineering
• Επιστήμες Μηχανικού και Τεχνολογία
• Επιστήμη Χημικού Μηχανικού

Language dc:language

gre

Identifier

10.12681/eadd/1709

OAI identifier oai:identifier

oai:10442/1709