Thermal cracking in charcoal and ceramics of pyrolysis liquid from sewage sludge

• Published in: Journal of physics. Conference series Vol. 946; no. 1; pp. 12034 - 12042
• Main Authors: Larina, O M, Zaichenko, V M
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.01.2018
• Subjects: Calorific value; Ceramics; Charcoal; Energy consumption; Energy conversion; Moisture content; Physics; Pyrolysis; Sewage disposal; Sewage sludge; Sludge; Specific volume
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/946/1/012034

The three products are formed as result of sewage sludge pyrolysis: solid residue, liquid fraction and non-condensable gases. The major product is the pyrolysis liquid (53 wt%). Pyrolysis liquid produced from sewage sludge is studied in present time yet. It has a relatively high calorific value, but it is stratified into fractions, contains a large amount of water and has an acid reaction of the medium, which complicates the process of its energy use. Therefore many researches of pyrolysis process is conducted to avoid producing of liquid fraction and obtain more gas fraction. This paper falls into this studies. To avoid pyrolysis liquid thermal cracking of it is used. The temperature in cracking zone is 1000 °C. The medium for cracking is charcoal and ceramics. In this paper it is presented the mass balances of pyrolysis and pyrolysis with cracking of sewage sludge, comparison of specific volume, degree of energy conversion, composition of gases mixtures obtained.