Pyrolysis of oil sludge with additives of sodium and potassium compounds

Shie, Je-Lueng; Lin, Jih‐Pai; Chang, Ching‐Yuan; Lee, Dong Hoon; Wu, Chao‐Hsiung

doi:10.1016/s0921-3449(02)00120-9

Cited by 111 publications

(45 citation statements)

References 15 publications

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“…Based on the above studies, the addition of Fe 2 O 3 and Fe 2 (SO 4 ) 3 ・H 2 O can improve the qualities of pyrolysis oil products. The effect of sodium compounds (NaOH, NaCl and Na 2 CO 3 ); and potassium compounds (KCl, KOH and K 2 CO 3 ) were tested by JeLuengShie and Ching-Yuan Chang [13]. They pointed out that KCl and Na 2 CO 3 showed better performance in the pyrolysis process of oil tank sludge.…”

Section: Catalystsmentioning

confidence: 99%

“…With its characteristics to crack high molecular weight organic compounds into lower ones, and to separate the stable emulsion of oil sludge into oil, water, and residue fraction efficiently, pyrolysis treatment were used widely in the field of oily waste disposal. A series of studies on the pyrolysis of oil sludge using TGA [10][11][12][13][14][15], rotary kiln [1], and fluidized bed [9] have been carried out. In these previous studies, the behavior of thermal conversion and the reaction models of the pyrolysis kinetics of oil sludge were proposed to explain the reaction mechanism.…”

Section: Introductionmentioning

confidence: 99%

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High Quality Oil Recovery from Oil Sludge Employing a Pyrolysis Process with Oil Sludge Ash Catalyst

Li¹

2015

Int J Waste Resour

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In this study, pyrolysis experiments of two kinds of oil sludge were conducted using a bench-scale fixed bed reactor, which is mainly consisted of a pyrolyzer and a reformer reactor. The effects of the pyrolysis method and the catalysts on the yield and quality of oil products obtained from pyrolysis of oil sludge were investigated. Characterization of the oil products was preliminary judged by comparing their distillation results with the diesel standard and the oil product without catalyst usage. Then, the chemical characterization of a part of the pyrolytic oil was conducted by FT-IR and NMR analysis. In the last step of these experiments, the oil products obtained from pyrolysis of oil sludge with the use of oil field sludge ash and oil tank sludge ash as catalysts were mixed with diesel oil by the volume ratio of one-to-five and one-to-ten. The fuel characteristic of the oil mixtures was identified from the point of the viscosity, the density, the cetane index, the carbon number distribution and the higher heating value (HHV). The results of experiment show that the highest oil product yield was obtained at the one-stage pyrolysis of the oil field sludge and also the oil tank sludge with the oil field sludge ash as the catalyst. According to the results of NMR analysis, the main part of the carbon in the oil product from pyrolysis of the oil sludge with the oil sludge ash was aliphatic carbon. The total ring number of oil products decreased owing to the hydrogenation and ring-open of naphthenic hydrocarbon during the catalytic pyrolysis process. The highest HHV and the cetane index could be obtained when the oil product from the one-stage pyrolysis process of the oil field sludge with the oil field sludge ash was mixed with diesel by the mixing ratio of 1: 10. The results of this study are of practical interest and will help to lead the researchers to more thinking about the oil recovery from oil sludge.

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Section: Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Quality Oil Recovery from Oil Sludge Employing a Pyrolysis Process with Oil Sludge Ash Catalyst

Li¹

2015

Int J Waste Resour

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“…It also requires a large area for the earthen containers and sludge collectors, resulting in the energy carrier price rise. The significant pollution of the environment is the result of oil spill, waste disposal, and oil waste burning or dumping; that leads to the significant deterioration of the living conditions [3][4][5][6][7]. Even more, annually thousands of tons of oil-slime are stored in sludge tanks demonstrating ineffective use of fossil fuel, and the storage of oil-containing waste in sludge tanks endangers the environment [3].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Study of the Catalytic Pyrolysis of Oil-Containing Waste

Chalov

Lugovoy

Kosivtsov

et al. 2016

Bull. Chem. React. Eng. Catal.

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Basing on the experimental data the optimal parameters of the pyrolysis of heavy and residual hydrocarbons of oil were defined as follows: temperature of 500 °С; catalyst of CoCl2 with the catalyst loading 5% (wt.) of the substrate weight. Under the optimal conditions the kinetic investigation of the pyrolysis process was carried out using the thermogravimetric method. According to the investigation, it was found that the activation energy of the catalytic pyrolysis of oil-containing waste decreased by 20-30 kJ/mol in comparison to non-catalytic process.

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“…Several methods developed for recycling hydrocarbons from oily sludge include, among others, solvent extraction, centrifugation, surfactant treatment, pyrolysis and froth floatation [3,[8][9][10][11][12][13][14][15][16][17][18]. Solvent extraction process mixes oily wastes with solvent at desired proportions, ensures complete miscibility, and the water, solid and carbonaceous impurities are selectively rejected by the extracting solvent.…”

Section: Introductionmentioning

confidence: 99%

Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

Taiwo

Otolorin

2016

IJET

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Abstract. Oil sludge waste associated with crude oil production generally consists of oil, sands and untreatable emulsions segregated from the production stream, and sediment accumulated on the bottom of crude oil and water storage tanks. The use of single solvent and combination (solvent blend) was evaluated for extraction of hydrocarbon content (oil) of the Tank Bottom Sludge (TBS) associated with the crude oil production with a view to optimizing hydrocarbon recovery from the sludge. TBS samples were contacted with selected solvents blends of varying volumetric ratios, each at a time. The blend generated from xylene, hexane, cyclohexane and petroleum ether representing aliphatic and aromatic interactive combination with varying polarity. Their effects on the oil recovery from tank bottom sludge were determined, with solubility parameter as a factor. The optimum oil recovery by blend A, B and C at room temperature of 29 o C, from sample 1 are respectively 54.48% (3:2), 60.33% (2:3) and 61.10% (1:1); from Sample 2, were respectively 66.25% (2:3), 60.80 (3:2) and 63.35 (1:1) at room temperature of 29 o C. At room temperature Blend C has the highest performance in extracting oil from sample 1. The highest performance in recovery of oil from sample 2 was observed with blend A (66.25 %). Solvent extraction process is very effective in recovering hydrocarbons oil from TBS. The use of solvents mixture greatly improved oil recovery from TBS and varies with blend composition and the operating temperature condition.

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Pyrolysis of oil sludge with additives of sodium and potassium compounds

Cited by 111 publications

References 15 publications

High Quality Oil Recovery from Oil Sludge Employing a Pyrolysis Process with Oil Sludge Ash Catalyst

High Quality Oil Recovery from Oil Sludge Employing a Pyrolysis Process with Oil Sludge Ash Catalyst

Kinetic Study of the Catalytic Pyrolysis of Oil-Containing Waste

Solvent Blend Performance in Hydrocarbon Recovery from Nigerian Tank Bottom Sludge

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