Pyrolysis of oil-based drill cuttings from shale gas field: Kinetic, thermodynamic, and product properties

Lv, Quanwei; Wang, Liao; Ma, Shuda; Jiang, Jiaojiao; Liu, Lingyue; Zhou, Zili; Liu, Li; Wang, Xiang; Bai, Jisong

doi:10.1016/j.fuel.2022.124332

Cited by 25 publications

(9 citation statements)

References 63 publications

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“…The average activation energies obtained by FR, FWO, KAS, and Starink methods were 185.5, 184.16, 166.17, and 176.03 kJ/mol, respectively. The average activation energy is larger compared to the results of OBDC pyrolysis by Lv et al This may be because the OBDCs require less energy to volatilize the light components in the low-temperature pyrolysis stage (80–360 °C). In the middle- and low-temperature stages (350–550 °C), the pyrolysis reaction of heavy components is more difficult and requires more energy.…”

Section: Resultsmentioning

confidence: 97%

“…Therefore, it is impossible to predict the exact reaction mechanism. Generally, the solid-state reaction of general solid waste pyrolysis can be described by the following formula s olid fuel false( normalO normalB normalD normalC false) → K ( T ) v o l a t i l e s 0.25em ( c o n d e n s a b l e + n o n c o n d e n s a b l e ) + c h a r …”

Section: Methodsmentioning

confidence: 99%

“…Therefore, it is impossible to predict the exact reaction mechanism. Generally, the solid-state reaction of general solid waste pyrolysis can be described by the following formula 13 …”

Section: Methodsmentioning

confidence: 99%

“…The evaluation of kinetic parameters and the pyrolysis reaction mechanism are critical for optimizing process parameters, expanding the production scale, and designing pyrolysis reaction systems . Methods developed by thermogravimetric analysis (TGA) are best suited to study the pyrolysis process of various sludges. , OBDCs have various components, the pyrolysis process is complex and changeable, and the activation energy changes significantly throughout the process. The model-free method (iso-transformation method) is usually used to estimate kinetic parameters such as activation energy, and its biggest advantage is that there is no risk of choosing the wrong dynamic model and finding unreasonable dynamic parameters .…”

Section: Introductionmentioning

confidence: 99%

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Study on Pyrolysis of Shale Gas Oil-Based Drilling Cuttings: Kinetics, Process Parameters, and Product Yield

Liu

Xiao

Dai³

et al. 2023

ACS Omega

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The main reaction range (350–550 °C) of oil-based drilling cutting (OBDC) pyrolysis was studied by a thermogravimetric analyzer and a vacuum tube furnace. The average activation energies calculated by four model-free methods were 185.5 kJ/mol (FM), 184.16 kJ/mol (FWO), 166.17 kJ/mol (KAS), and 176.03 kJ/mol (Starink). The reaction mechanism was predicted by the Criado (Z-master plot) method. It is found that a high heating rate is helpful to predict the reaction mechanism, but it cannot be described by a single reaction model. Under the conditions of target temperature higher than 350 °C, residence time higher than 50 min, laying thickness less than 20 mm, and heating rate lower than 15 °C, the residual oil content is lower than 0.3% and the recovery rate of mineral oil is higher than 98.43%. Solid phase products accounted for more than 70%, reached the maximum 17.04% at 450 °C, and then decreased to 15.87% at 500 °C. Aromatic hydrocarbons, as coking precursors, are transformed from a low ring to a high ring. Recycled mineral oil can reconfigure oil-based mud (OBM). The research results can provide a theoretical basis for process optimization.

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Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

“…Therefore, it is impossible to predict the exact reaction mechanism. Generally, the solid-state reaction of general solid waste pyrolysis can be described by the following formula 13 …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Study on Pyrolysis of Shale Gas Oil-Based Drilling Cuttings: Kinetics, Process Parameters, and Product Yield

Liu

Xiao

Dai³

et al. 2023

ACS Omega

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show abstract

“…Thermogravimetric analysis ( TGA ) has been widely used in the analysis of solid pyrolysis and kinetic parameter evaluation and is most suitable for studying the pyrolysis process of various sludges. [12,13]. Based on analyzing the thermal kinetics and parameters, it is helpful to explain the pyrolysis behavior and provide reference value for the design of the reactor and the optimization of process parameters.…”

Section: Introductionmentioning

confidence: 99%

Study on pyrolysis law of shale gas oil-based drilling cuttings : kinetics and product characteristics

Liu,

Li,

et al. 2024

Preprint

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oil-based cuttings(OBDC)is a typical hazardous waste produced in the process of shale gas field development, and pyrolysis has been proved to be an effective treatment method, that can recover the harmful components and achieve resource reuse. In this paper, thermogravimetric experiments were carried out to study the pyrolysis kinetics, and the effects of pyrolysis temperature on the gas phase yield, oil quality and solid phase heavy metal migration were analyzed. The results show that the pyrolysis of OBDC is divided into three stages, and the light hydrocarbon cracking stage is the key control step of the pyrolysis process. In addition, the maximum weight loss rate of the sample with high heating rate appears at a higher temperature. Friedman (FM), Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink conversion methods can well fit the weight loss curve, and the estimated average activation energy is 185.5,184.16,166.17 and 176.03 kJ / mol, respectively. The estimated values are close and more accurate. The activation energy increases with the deepening of the reaction process. The solid phase products after pyrolysis accounted for more than 70% of the main products. The pyrolysis temperature had a great influence on the liquid phase yield, and the oil phase yield decreased by 1.17% from 450°C to 500°C. In the recovered mineral oil before and after pyrolysis: C15 ~ C28 pyrolysis C10 ~ C14 increased by 2.89%, C15 ~ C28 volatilization decreased by 3.26%, and high temperature aging increased C29 ~ C36 by 0.63%; aromatic hydrocarbons, as the coking parent, change from low ring to high ring. In addition, the content of heavy metals in the residue increased after pyrolysis, and more heavy metals were enriched in the residue. This study is helpful for the solidification of heavy metals and the recycling of solid waste, which is conducive to reducing energy and resource consumption and improving the processing technology of production.

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Degradation of petroleum pollutants in oil-based drilling cuttings using an Fe2+-based Fenton-like advanced oxidation processes

Chen

Luo

2022

Environ Sci Pollut Res

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Pyrolysis of oil-based drill cuttings from shale gas field: Kinetic, thermodynamic, and product properties

Cited by 25 publications

References 63 publications

Study on Pyrolysis of Shale Gas Oil-Based Drilling Cuttings: Kinetics, Process Parameters, and Product Yield

Study on Pyrolysis of Shale Gas Oil-Based Drilling Cuttings: Kinetics, Process Parameters, and Product Yield

Study on pyrolysis law of shale gas oil-based drilling cuttings : kinetics and product characteristics

Degradation of petroleum pollutants in oil-based drilling cuttings using an Fe2+-based Fenton-like advanced oxidation processes

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