4.7 Article

Experimental study on supercritical water gasification of oily sludge using a continuous two-step method

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Review Agricultural Engineering

Hydrothermal carbonization and Liquefaction: differences, progress, challenges, and opportunities

Daniel Lachos-Perez et al.

Summary: Hydrothermal liquefaction (HTL) and Hydrothermal Carbonization (HTC) are environmentally friendly and technologically innovative thermochemical processes that show significant differences in operation parameters, technical issues, and main products. Environmental and techno-economic assessments can evaluate the environmental sustainability and economic implications of these techniques. Perspectives and challenges are explored, along with integration approaches for hydrothermal valorization pathways and biorefining.

BIORESOURCE TECHNOLOGY (2022)

Article Engineering, Environmental

Characterization of heavy metals and oil components in the products of oily sludge after hydrothermal treatment

Yihang Duan et al.

Summary: The study revealed that siloxane and heavy oil components remain in the solid residue during hydrothermal treatment and mechanical compression, while light oils and oils with hydrophilic groups are transferred to hydrothermal fluids. Additionally, the content of heavy metals in the solid residue increased at a temperature of 240 degrees Celsius and a residence time of 60 minutes. Fourier-transform infrared spectroscopy results showed an increase in hydroxyl groups, which benefits the adsorption of heavy metals and other pollutants.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Energy & Fuels

Study on the detailed reaction pathway and catalytic mechanism of a Ni/ ZrO2 catalyst for supercritical water gasification of diesel oil

Jiajing Kou et al.

Summary: This study investigates the gasification characteristics, reaction pathway, and catalytic mechanism of diesel oil in supercritical water. The findings show that the Ni/ZrO2 catalyst significantly enhances the carbon gasification efficiency and inhibits the formation of liquid intermediates in the supercritical water gasification process.
Article Energy & Fuels

Reaction pathways and kinetics for hydrogen production by oilfield wastewater gasification in supercritical water

Zhiyong Peng et al.

Summary: Supercritical multi-component thermal fluid (SMTF) generation technology shows great promise for offshore heavy oil recovery. The first step involves hydrogen production through supercritical water gasification (SCWG), while oilfield wastewater can be used as a toxic waste for SMTF generation. The study conducted experiments to analyze the effects of Na2CO3 catalyst, temperature, and residence time on gas yield and carbon gasification efficiency (CE). The results showed that Na2CO3 catalysis improved gas yield and CE, with higher temperatures and longer residence times being beneficial. The research provides insights into the mechanism of SMTF generation technology.
Article Mechanics

The influence of Stefan flow on the flow and heat-transfer characteristics of spherical-particle pair in supercritical water

Yingdong Wang et al.

Summary: For mixtures with dispersed reactive particles, especially highly concentrated particles, the interactions between particles and between particles and fluid are complex and have significant effects on the overall flow. This study focuses on the flow and fluid-particle heat transfer characteristics of supercritical water flowing around a fixed two-particle system. The effects of different particle configurations and the influence of Stefan flow are analyzed. The results show that the configurations of two particles have significant impacts on the drag coefficient, Nusselt number, and vortex structure, and the wake vortex structure is strongly affected by Stefan flow, which reduces the drag coefficient and Nusselt number.

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW (2022)

Article Engineering, Environmental

A zero-dimensional model of porous char gasification in supercritical water: Experiments and mathematical modeling

Chao Fan et al.

Summary: This study developed a zero-dimensional model of porous char gasification in supercritical water, which can be used for reactor-scale modeling and simulation. The evolution of specific surface area of char was obtained through experiments, and a kinetic model with detailed conversion pathways and consideration of specific surface area evolution was proposed. The model was evaluated by fitting experimental results and calculating intrinsic kinetic parameters. The developed sub-model showed reasonable prediction of gasification process and good description of particle characteristics.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Physical

Supercritical water gasification of oil-containing wastewater with a homogeneous catalyst: Detailed reaction kinetic study

Jialing Xu et al.

Summary: This paper aims to establish a reaction kinetic model for supercritical water gasification (SCWG) and provide better guidance for optimal industrial reactor design. The model is validated by experimental data and predicts the indicators of carbon gasification efficiency and gas yield versus residence time.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

Review Engineering, Environmental

Oily sludge treatment in subcritical and supercritical water: A review

Zhong Chen et al.

Summary: This review focuses on the treatment of oily sludge using sub-/supercritical water. Eight hydrothermal technologies for different purposes are summarized, including pressurized hot water extraction, thermal hydrolysis, hydrothermal carbonization, wet air oxidation, hydrothermal liquefaction, supercritical water upgrading, supercritical water oxidation, and supercritical water gasification. A general reaction pathway for sub-/supercritical water treatment of oily sludge is presented, with a particular focus on the chemical mechanism at temperatures above 350 °C. Two reaction maps illustrate the reaction pathways of aliphatic and aromatic hydrocarbons in oily sludge. This review provides detailed information, serving as a guideline for selecting suitable hydrothermal processes for specific oily sludge treatment and offering recommendations for further research.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Green & Sustainable Science & Technology

Experimental and kinetic study of heavy metals transformation in supercritical water gasification of oily sludge

Linhu Li et al.

Summary: This study investigates the transformation behaviors of heavy metals during the supercritical water gasification (SCWG) of oily sludge. The results demonstrate that higher reaction temperature and longer residence time enhance gas yield. The heavy metals tend to deposit in the stable and environmentally harmless residual fraction. The study highlights the importance of transforming Zn ions in liquid residues to more stable forms.

JOURNAL OF CLEANER PRODUCTION (2022)

Article Engineering, Environmental

Characteristics and mechanisms of nitrogen transformation during chicken manure gasification in supercritical water

Shi Liu et al.

Summary: This study investigates the behavior of nitrogen during chicken manure gasification in supercritical water, and reveals that temperature plays a crucial role in nitrogen transformation and distribution. The carbon gasification efficiency reaches 92.66%, and no NOx is detected in the gaseous products. As temperature increases, nitrogen is mainly transferred to the liquid phase, accompanied by the conversion of organic nitrogen to inorganic nitrogen. The study also uncovers the migration pathways of nitrogenous intermediates, providing a theoretical foundation for targeted removal of nitrogen components during the supercritical water gasification of high-nitrogenous biomass.

WASTE MANAGEMENT (2022)

Article Chemistry, Physical

Structural effect of ZrO2 on supported Ni-based catalysts for supercritical water gasification of oil-containing wastewater

Jiajing Kou et al.

Summary: A Ni/ZrO2 catalyst with mixed phase of tetragonal ZrO2 and monoclinic ZrO2 shows high catalytic activity and stability in supercritical water gasification of oil mixture. Optimal gasification conditions for oil-containing wastewater treatment are obtained, providing guidance for different concentrations of oil-containing wastewater.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Chemistry, Physical

Supercritical water gasification mechanism of polymer-containing oily sludge

Pai Peng et al.

Summary: This study proposes an effective pretreatment method for PCOS and demonstrates that both time and temperature have promoting effects on gas production. Polycyclic aromatic hydrocarbons are considered as significant obstacles during gasification. The results show that high carbon gasification efficiency and maximum hydrogen yield can be achieved under specific conditions.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Environmental Sciences

Biochar derived from pyrolysis of oily sludge waste: Structural characteristics and electrochemical properties

Diandian Bao et al.

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2020)

Article Environmental Sciences

Static decontamination of oil-based drill cuttings with pressurized hot water using response surface methodology

Zhong Chen et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2019)

Article Chemistry, Physical

Supercritical water gasification of black liquor with wheat straw as the supplementary energy resource

Changqing Cao et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

Article Chemistry, Physical

Experimental study on oil-containing wastewater gasification in supercritical water in a continuous system

Jialing Xu et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2019)

Article Engineering, Environmental

A laboratory evaluation of superheated steam extraction process for decontamination of oil-based drill cuttings

Zhong Chen et al.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2018)

Article Chemistry, Physical

Bio-oil production from refinery oily sludge using hydrothermal liquefaction technology

Mohammad Ali Nazem et al.

JOURNAL OF SUPERCRITICAL FLUIDS (2017)

Article Chemistry, Physical

Hydrogen production from supercritical water gasification of chicken manure

Wen Cao et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2016)

Article Engineering, Civil

Gasification of petrochemical sludge in supercritical water

Lijie Zhang et al.

PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-WATER MANAGEMENT (2016)

Article Environmental Sciences

Extraction of diesel from contaminated soil using subcritical water

Mohammad Nazrul Islam et al.

ENVIRONMENTAL EARTH SCIENCES (2015)

Article Chemistry, Physical

Hydrogen production by sewage sludge gasification in supercritical water with a fluidized bed reactor

Yunan Chen et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2013)

Review Engineering, Environmental

Recent development in the treatment of oily sludge from petroleum industry: A review

Guangji Hu et al.

JOURNAL OF HAZARDOUS MATERIALS (2013)

Article Agricultural Engineering

Oil recovery from refinery oily sludge using a rhamnolipid biosurfactant-producing Pseudomonas

Ping Yan et al.

BIORESOURCE TECHNOLOGY (2012)

Review Engineering, Environmental

A review of the technological solutions for the treatment of oily sludges from petroleum refineries

Leonardo Jordao da Silva et al.

WASTE MANAGEMENT & RESEARCH (2012)

Article Energy & Fuels

PROSPECTS FOR DEVELOPMENT OF OILY SLUDGE TREATMENT

Jing Guolin et al.

CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS (2011)

Article Engineering, Environmental

Fuel recovery from waste oily sludge using solvent extraction

Essam A. H. Zubaidy et al.

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (2010)

Article Engineering, Environmental

Pyrolysis treatment of oil sludge and model-free kinetics analysis

Jianguo Liu et al.

JOURNAL OF HAZARDOUS MATERIALS (2009)

Article Engineering, Chemical

Near-critical and supercritical fluid extraction of industrial sewage sludge

Tulay Gungoren et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2007)

Article Engineering, Environmental

Proposal of a sequential treatment methodology for the safe reuse of oil sludge-contaminated soil

L. Mater et al.

JOURNAL OF HAZARDOUS MATERIALS (2006)