Process optimization for the recovery of oil from tank bottom sludge using microwave pyrolysis
| Autor: | Indumathi M. Nambi, Perumal Tamizhdurai, K. Sivagami, Shaikh Mujahed |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
021110 strategic defence & security studies Environmental Engineering Materials science General Chemical Engineering Oil refinery 0211 other engineering and technologies 02 engineering and technology Fuel oil 010501 environmental sciences Cetane index Pulp and paper industry 01 natural sciences law.invention Hydrocarbon chemistry law Environmental Chemistry Heat of combustion Char Safety Risk Reliability and Quality Pyrolysis 0105 earth and related environmental sciences Susceptor |
| Zdroj: | Process Safety and Environmental Protection. 148:392-399 |
| ISSN: | 0957-5820 |
| Popis: | Petroleum refining generates hazardous sludge with polyaromatic hydrocarbons and heavy metals. The main objective of the study was to evaluate the performance of microwave pyrolysis for the recovery of oil from furnace oil sludge. The characteristics of furnace oil tank bottom sludge such as pH, moisture, viscosity, and volatile hydrocarbon content were determined. Thermal Gravimetric Analysis has been done to determine the cracking and degradation range of oily sludge. Gas Chromatography-Mass Spectrometry was used to fingerprint the hydrocarbon. Pyrolysis experiments were conducted in lab-scale pyrolysis set up with different susceptors and sludge in a specific weight ratio. The process parameters like microwave power, sludge: susceptor ratio were optimized to increase the oil yield. Graphite mixed sludge in 1:5 ratio at 450 W power shown higher oil yield. The calorific value of oil and char were determined as 44,442.9 and 16,686.58 kJ /kg. Physicochemical characteristics of oil such as flash point, density, and kinematic viscosity are 94 °C, 874.9, kg/m3, and 4.063 cSt. Cetane index and sulfur content were measured as 40.9, 6.85 g/kg respectively. The gas analysis had shown the presence of H2, CO2, CO, and CH4 compounds. Char contains a higher percentage of carbon, Fe, Al, Ni, Pb, Cd, and S compounds. |
| Databáze: | OpenAIRE |
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