Pyrolysis behaviors of oilfield sludge based on Py-GC/MS and DAEM kinetics analysis

Ma, Zhe; Xie, Jianghao; Gao, Ningbo; Quan, Cui

doi:10.1016/j.joei.2018.07.001

Cited by 73 publications

(24 citation statements)

References 30 publications

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“…OS contains a variety of complex components, and the weight loss in the high temperature reaction is often composed of multiple reaction superpositions 13 . Therefore, in order to further explore the OS gasification reaction stages, the fitting method are adopted in this paper, which is a classical method of kinetics analysis.…”

Section: Methodsmentioning

confidence: 99%

Experimental study on kinetic characteristics of oil sludge gasification

Chu

Gong²,

Wang

et al. 2021

Asia-Pacific J Chem Eng

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Oil sludge (OS) is a typical dangerous waste in petroleum industry, which also contains abundant energy. The purpose of this study was to recover resources from OS gasification. To figure out the gasification process, a thermal analyzer was used to carry out OS gasification experiments under steam/nitrogen atmosphere with different heating rates. Results showed that the OS gasification reaction could be divided into five stages: free water volatilization, the escape of light components, the cracking of heavy components and steam reforming, the charring process and water gas shift (WGS) reactions, and inorganic mineral decomposition. The activation energy (E), pre‐exponential factor (A), enthalpy change (ΔH), Gibbs free energy change (ΔG), and entropy change (ΔS) of three main reaction stages (Stages 2–4) were analyzed through kinetic and thermodynamic analysis. From Stage 2 to Stage 4, E, ΔH, and ΔS decreased from 118.80 kJ·mol−1, 113.92 kJ·mol−1, and −4.09 J·(K mol)−1 to 13.19 kJ·mol−1, 5.92 kJ·mol−1, and −234.06 J·(K mol)−1, respectively. Nevertheless, ΔG increased from 116.01 to 210.04 kJ·mol−1. From these parameters, it could be found that the decrease of E was beneficial to the reaction. However, the values of ΔG were always positive and the reaction could not happen spontaneously.

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Section: Methodsmentioning

confidence: 99%

Experimental study on kinetic characteristics of oil sludge gasification

Chu

Gong²,

Wang

et al. 2021

Asia-Pacific J Chem Eng

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“…Next, we will increase the temperature to 120 °C at the rate of 5 °C/min. Finally, we increased the temperature to 200 °C at a rate of 10 °C/min for 2 minutes [14][15][16].…”

Section: The Py-gc-ms Analysismentioning

confidence: 99%

Extract of Albizia kalkora leaves

et al. 2020

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In this paper, a mixture of methanol, ethanol, benzene and ethanol were used to extract the leaves of Albizia kalkora (Roxb.) Prain. Then, using Fourier transform infrared (FT-IR) spectroscopy, gas chromatography-mass spectrometry (GC-MS), pyrolysis as chromatography-mass spectrometry, and thermogravimetric analysis (TGA) and other advanced instruments Albizia kalkoraleaves were analyzed to determine their composition. According to the test data, Albizia kalkoraleaves contain epinephrine, trans squalene, stachydrine and other chemical components with high medicinal value, indicating that Albizia kalkoraleaves have potential applications in the pharmaceutical industry. This study has expanded the utilization value of Albizia kalkoratrees and provided technical support for the resource utilization of Albizia kalkoratrees.

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“…It can be expected that the weight loss is due to the evaporation of water. The most abundant release of volatile matter (H 2 , CO, CO 2 , alkanes, alkenes and aromatic hydrocarbon) is observed in the temperature range 105-550 o C, which is related to volatilization and decomposition of complex organic components [24,25]. The last weight loss (550-780 o C) is attributed to the decomposition of organic residues and inorganic matter such as heavy metal salts [26].…”

Section: Tg Analysis Of Oily Sludge Pyrolysismentioning

confidence: 99%

Oily sludge catalytic pyrolysis combined with fine particle removal using a Ni-ceramic membrane

Gao

Quan

et al. 2020

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Pyrolysis is one of the effective technology for oily sludge treatment and energy recovery. However, pyrolysis of oily sludge generates solid particles which are taken away from the reactor by gas, causing blockage in downstream equipment and reducing the quality of pyrolysis oil and gas. A study on the clean catalytic pyrolysis of oily sludge was carried out, by incorporating a ceramic membrane with or without Ni inside the pyrolysis reactor. It aims to investigate the effect of ceramic membrane on oily sludge pyrolysis and particulate removal. The yield of the pyrolysis gas produced from the reaction with Ni-ceramic membrane is 31.46 L/kg, while the recovery rate of pyrolysis oil is 48.21%.On the contrary, the yield of the pyrolysis gas produced from the reaction with blank ceramic membrane is 17.92 L/kg, while the recovery rate of pyrolysis oil is 62.63%. The particulate matter content in gas without and with Ni-ceramic membrane are 2.74 and 0.07 mg/L. The particulate matter content in oil without and with Ni-ceramic membrane are 3708.9 and 156.7 mg/L, respectively. Results indicated that the Ni catalyst loading on the ceramic membrane could improve the yield of the pyrolysis gas and remove the fine particles effectively. In addition, a long-time catalytic pyrolysis experiment was carried out, with the feeding speed of 4.17 g/min and the reaction temperature of 500 o C. It was found from the set conditions that the Ni-ceramic membrane could be *Revised Manuscript clean and final version Click here to view linked References used continuously for 420 min.

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Pyrolysis behaviors of oilfield sludge based on Py-GC/MS and DAEM kinetics analysis

Cited by 73 publications

References 30 publications

Experimental study on kinetic characteristics of oil sludge gasification

Experimental study on kinetic characteristics of oil sludge gasification

Extract of Albizia kalkora leaves

Oily sludge catalytic pyrolysis combined with fine particle removal using a Ni-ceramic membrane

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