☆ 4.7 Article

Optimized TGA-based experimental method for studying intrinsic kinetics of coal char oxidation under moderate or intense low-oxygen dilution oxy-fuel conditions

ENERGY (2023)

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。

Article Thermodynamics

Experimental and numerical investigation of MILD combustion in a pilot-scale water heater

Ghasem Khabbazian et al.

Summary: The study found that mechanical-process retrofitting techniques can successfully achieve positive features of flameless combustion, such as uniform temperature distribution, improved efficiency, and reduced NO emission. A new combustion regime map was developed to show the effects of heat loss on different combustion regions, indicating an expansion of the quasi-MILD region with increasing heat loss and disappearance of the HTC zone beyond a specific point. The numerical visualization method on the combustion regime map is a powerful tool for designing practical flameless systems or retrofitting conventional devices.

ENERGY (2022)

添加到收藏夹

Article Thermodynamics

Experimental investigation on co-firing residual char and pulverized coal under MILD combustion using low-temperature preheating air

Fan Hu et al.

Summary: This study investigates the co-firing of residual char and bituminous coal under moderate or intense low-oxygen dilution (MILD) conditions. The results show that MILD co-combustion through an asymmetrical single nozzle achieves the lowest peak temperature and the most uniform distributions of temperature, heat flux, and gas compositions in the furnace. It reduces NO emissions by 57% compared to swirl low-NO flame co-combustion and achieves a burnout rate of 94%. Overall, this study expands the fuel flexibility of MILD combustion, even for residual char fuel blends.

ENERGY (2022)

添加到收藏夹

Article Thermodynamics

Experimental evaluation on NOx formation and burnout characteristics of oxy-fuel co-combustion of ultra-low volatile carbon- based solid fuels and bituminous coal

Chaowei Wang et al.

Summary: The experimental study on oxy-fuel co-firing of pyrolyzed semi-coke powder and gasification residual carbon shows that it can reduce NOx generation and improve carbon burnout efficiency. This research provides guidance for the clean and efficient utilization of carbon-based solid wastes and the development of carbon capture technology.

ENERGY (2022)

添加到收藏夹

Article Thermodynamics

Influence of wall thermal conditions on the ignition, flame structure, and temperature behaviors in air-fuel, oxygen-enhanced, and oxy-fuel combustion under the MILD and high-temperature regimes

Esmaeil Ebrahimi Fordoei et al.

Summary: In this study, variations of wall thermal conditions and oxidant compositions were investigated to understand the temperature distribution, ignition process, and flame structure under MILD and high-temperature combustion regimes. Computational fluid dynamics (CFD) and kinetic calculations were used to analyze the results. The transition from HTC to MILD showed a significant decrease in T-max and T-ave, indicating the effectiveness of MILD combustion in maintaining thermal conditions while reducing pollutant emissions. The MILD regime had different reaction pathways due to higher heat loss compared to the constant pathways observed in the HTC regime.

ENERGY (2022)

添加到收藏夹

Article Thermodynamics

Structure and reactivity of chars prepared from low-volatile coal under O2/ N2 and O2/CO2 conditions in a flat-flame assisted entrained flow reactor

Xiaohong Huang et al.

Summary: Accurate assessment of the structural characteristics and reactivity of coal char is crucial for burner design. In this study, the physical-chemical structures and reactivities of low-volatile coal chars were investigated under different conditions. It was found that the CO2 content affected the char yield and specific surface area, and the chemical structures were influenced by different conditions. Moreover, the physical structure characteristics of coal char played a leading role in the apparent reactivity.

ENERGY (2022)

添加到收藏夹

Article Chemistry, Applied

Char reactivity and kinetics based on the dynamic char structure during gasification by CO2

Mengjie Liu et al.

Summary: Coal char reactivity is crucial for gasifier design and operation, and is dynamic with reaction during gasification. In-situ char reactivity increases and then decreases due to gas switch step, graphitization degree increase, and inhibition effect of minerals, while ex-situ char reactivity is initially controlled by chemical structure and later by catalytic activity of minerals. The unreaction core model (URCM) is suitable for interpreting gasification kinetics based on dynamic char structure.

FUEL PROCESSING TECHNOLOGY (2021)

添加到收藏夹

Article Thermodynamics

Numerical analyses of MILD and conventional combustions with the Eddy Dissipation Concept (EDC)

Yucheng Kuang et al.

Summary: In this study, it was found that the original EDC constants are suitable for predicting conventional combustion, while modified EDC constants are needed for reasonable predictions of MILD combustion. Flow characteristics can be used to distinguish numerically between MILD combustion and conventional combustion.

ENERGY (2021)

添加到收藏夹

Article Thermodynamics

The optimization and thermodynamic and economic estimation analysis for CO2 compression-liquefaction process of CCUS system using LNG cold energy

Yue Xin et al.

Summary: This paper discusses the importance of compression and liquefaction of CO2 in CCUS projects, and proposes a new process scheme of using LNG cold energy for CO2 pipeline transportation. By comparing energy consumption and economic factors, the advantages of the new technology are identified, and recommendations for the economic feasibility of the new process application are provided.

ENERGY (2021)

添加到收藏夹

Article Chemistry, Applied

Mechanism of coke formation and corresponding gas fraction characteristics in biochar-catalyzed tar reforming during Corn Straw Pyrolysis

Hongliang Sun et al.

Summary: The formation of coke deposition is a major obstacle in the development of tar reforming and biomass thermal conversion. Biochar produced at 800 degrees C was used for catalytic reforming of biomass pyrolysis tar at 650 degrees C, leading to increased coke yield and decreased tar removal efficiency with extended feeding time. Biochar is more efficient in removing aliphatic components from tar than aromatic components, and catalytic reforming of tar leads to increased aromatization. Additionally, the addition of biochar has minimal impact on CO and CO2 yield but affects CH4 and H2 yield.

FUEL PROCESSING TECHNOLOGY (2021)

添加到收藏夹

Article Chemistry, Applied

A reactive molecular dynamics study of HCN oxidation during pressurized oxy-fuel combustion

Dikun Hong et al.

Summary: The study found that in pressurized oxy-fuel combustion, HCN oxidation is influenced by CO2, with effects on both overall oxidation rate and OH radical generation.

FUEL PROCESSING TECHNOLOGY (2021)

添加到收藏夹

Article Green & Sustainable Science & Technology

The development of Carbon Capture Utilization and Storage (CCUS) research in China: A bibliometric perspective

Kai Jiang et al.

Summary: CCUS technology in China has gained significant attention, with a growing number of publications and expanding research topics. Government support has played a key role in driving research progress, but studies on public awareness, financial mechanisms, and business models for CCUS deployment are limited.

RENEWABLE & SUSTAINABLE ENERGY REVIEWS (2021)

添加到收藏夹

Article Thermodynamics

Effect of coal rank, oxygen level and particle size on oxidation reactivity of typical Chinese coals

Xing Liu et al.

Summary: This study investigates the impact of varying oxygen concentrations on different coals through non-isothermal TGA experiments, revealing that characteristic temperatures increase with higher coal rank and lower oxygen levels. The role of oxygen diffusion becomes increasingly important as oxidation proceeds.

THERMOCHIMICA ACTA (2021)

添加到收藏夹

Article Thermodynamics

Thermogravimetric analysis of pulverized coal in low oxygen atmosphere

Yucheng Kuang et al.

Summary: In MILD combustion, the oxidant is diluted by recirculated flue gas, leading to significant differences in combustion characteristics compared to conventional combustion. Thermogravimetric analysis shows that pulverized coal has a higher burnout temperature under low oxygen concentrations, but increasing the heating rate or using CO2 instead of N-2 can improve combustibility. In O-2/CO2 atmosphere, the high heating rate may increase coal gasification contribution due to low oxygen concentration and high burnout temperature. Additionally, the Coats-Redfern method calculates the kinetic parameters of pulverized coal MILD combustion, with activation energy ranging from 27.22 kJ/mol to 162.53 kJ/mol.

THERMOCHIMICA ACTA (2021)

添加到收藏夹

Article Engineering, Chemical

Investigation of the apparent kinetics of air and oxy-fuel biomass combustion in a spout fluidised-bed reactor

Yongliang Yan et al.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2020)

添加到收藏夹

Article Chemistry, Applied

Reactive molecular dynamic simulations of the CO2 gasification effect on the oxy-fuel combustion of Zhundong coal char

Dikun Hong et al.

FUEL PROCESSING TECHNOLOGY (2020)

添加到收藏夹

Article Chemistry, Applied

Evaluation, development, and application of a new skeletal mechanism for fuel-NO formation under air and oxy-fuel combustion

Fan Hu et al.

FUEL PROCESSING TECHNOLOGY (2020)

添加到收藏夹

Article Green & Sustainable Science & Technology

Numerical study of biomass Co-firing under Oxy-MILD mode

Xuebin Wang et al.

RENEWABLE ENERGY (2020)

添加到收藏夹

Article Thermodynamics

Effects of oxygen concentration and inlet velocity on pulverized coal MILD combustion

Yucheng Kuang et al.

ENERGY (2020)

添加到收藏夹

Article Thermodynamics

Combustion mechanism and model free kinetics of different origin coal samples: Thermal analysis approach

Kandasamy Jayaraman et al.

ENERGY (2020)

添加到收藏夹

Article Chemistry, Applied

Comparative study of the inherent combustion reactivity of sawdust chars produced by TGA and in the drop tube furnace

Salome T. Farrow et al.

FUEL PROCESSING TECHNOLOGY (2020)

添加到收藏夹

Article Chemistry, Applied

CFD modeling on char surface reaction behavior of pulverized coal MILD-oxy combustion: Effects of oxygen and steam

Zewu Zhang et al.

FUEL PROCESSING TECHNOLOGY (2020)

添加到收藏夹

Article Energy & Fuels

Numerical analysis on the characteristic chemical time scale and combustion regime of natural gas MILD combustion

Tingyao Zhang et al.

FUEL (2020)

添加到收藏夹

Article Energy & Fuels

The intrinsic reactivity of coal char conversion compared under different conditions of O-2/CO2, O-2/H2O and air atmospheres

Yang Liu et al.

JOURNAL OF THE ENERGY INSTITUTE (2020)

添加到收藏夹

Article Thermodynamics

Rational design of thermogravimetric experiments to determine intrinsic char gasification kinetics

M. A. Kibria et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2019)

添加到收藏夹

Article Thermodynamics

Experimental and numerical study of laminar flame speeds of CH4/NH3 mixtures under oxy-fuel combustion

Shibo Liu et al.

ENERGY (2019)

添加到收藏夹

Article Chemistry, Applied

Combustion characteristics of lignite char in a fluidized bed under O2/N2, O2/CO2 and O2/H2O atmospheres

Lin Li et al.

FUEL PROCESSING TECHNOLOGY (2019)

添加到收藏夹

Article Energy & Fuels

Ignition and combustion characteristics of coal particles under high-temperature and low-oxygen environments mimicking MILD oxy-coal combustion conditions

Zhukai Zeng et al.

FUEL (2019)

添加到收藏夹

Article Thermodynamics

A kinetic study on lignite char gasification with CO2 and H2O in a fluidized bed reactor

Shuai Tong et al.

APPLIED THERMAL ENGINEERING (2019)

添加到收藏夹

Article Thermodynamics

Global reaction mechanisms for MILD oxy-combustion of methane

Fan Hu et al.

ENERGY (2018)

添加到收藏夹

Article Energy & Fuels

Low NOx Emissions from Pulverized Coal Moderate or Intense Low-Oxygen Dilution Combustion in O2/CO2 Preheated by a Circulating Fluidized Bed

Shujun Zhu et al.

ENERGY & FUELS (2018)

添加到收藏夹

Article Chemistry, Applied

Numerical simulations on Oxy-MILD combustion of pulverized coal in an industrial boiler

Diego Perrone et al.

FUEL PROCESSING TECHNOLOGY (2018)

添加到收藏夹

Article Energy & Fuels

Experimental and numerical investigations on oxy-coal combustion in a 35 MW large pilot boiler

Junjun Guo et al.

FUEL (2017)

添加到收藏夹

Article Energy & Fuels

Numerical simulation of oxy-coal MILD combustion with high-velocity oxygen jets

Ruochen Liu et al.

JOURNAL OF THE ENERGY INSTITUTE (2017)

添加到收藏夹

Article Energy & Fuels

Study on the surface active reactivity of coal char conversion in O2/CO2 and O2/N2 atmospheres

Yang Liu et al.

FUEL (2016)

添加到收藏夹

Article Thermodynamics

Diffusional effects on differences of coal char reactivity between air and oxy-fuel combustion in thermogravimetric experiments

Chang'an Wang et al.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2016)

添加到收藏夹

Article Energy & Fuels

Moderate or Intense Low-Oxygen Dilution Combustion of Methane Diluted by CO2 and N2

Jianpeng Zhang et al.

ENERGY & FUELS (2015)

添加到收藏夹

Article Thermodynamics

Soot oxidation kinetics under pressurized conditions

Isabel C. Jaramillo et al.

COMBUSTION AND FLAME (2014)

添加到收藏夹

Article Thermodynamics

Mass transfer studies during CO2 gasification of torrefied and pyrolyzed chars

Shubha Shalini Vincent et al.

ENERGY (2014)

添加到收藏夹

Article Energy & Fuels

Characteristics of Chars from Low-Temperature Pyrolysis of Lignite

Fanrui Meng et al.

ENERGY & FUELS (2014)

添加到收藏夹

Article Energy & Fuels

Moderate or Intense Low-Oxygen Dilution Oxy-combustion Characteristics of Light Oil and Pulverized Coal in a Pilot-Scale Furnace

P. Li et al.

ENERGY & FUELS (2014)

添加到收藏夹

Article Chemistry, Applied

A non-equimolar mass transfer model for carbon dioxide gasification studies by thermogravimetric analysis

Maryam Malekshahian et al.

FUEL PROCESSING TECHNOLOGY (2014)

添加到收藏夹

Article Thermodynamics

MILD oxy-combustion of gaseous fuels in a laboratory-scale furnace

Pengfei Li et al.

COMBUSTION AND FLAME (2013)

添加到收藏夹

Article Thermodynamics

TG-FTIR analysis of oxidation kinetics of some solid fuels under oxy-fuel conditions

T. Meriste et al.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2013)

添加到收藏夹

Article Thermodynamics

Reactivities of coals and synthetic model coal under oxy-fuel conditions

Chang'an Wang et al.

THERMOCHIMICA ACTA (2013)

添加到收藏夹

Article Thermodynamics

Oxy-fuel combustion characteristics and kinetic parameters of lignite coal from thermo-gravimetric data

Zhijun Zhou et al.

THERMOCHIMICA ACTA (2013)

添加到收藏夹

Article Thermodynamics

General modeling and numerical simulation of the burning characteristics of porous chars

Xiaohan Wang et al.

COMBUSTION AND FLAME (2012)

添加到收藏夹

Article Thermodynamics

Kinetic models for the oxy-fuel combustion of coal and coal/biomass blend chars obtained in N2 and CO2 atmospheres

M. V. Gil et al.

ENERGY (2012)

添加到收藏夹

Article Thermodynamics

Simultaneous thermogravimetry-calorimetry study on the combustion of coal samples: Effect of heating rate

Mustafa Versan Kok

ENERGY CONVERSION AND MANAGEMENT (2012)

添加到收藏夹

Review Thermodynamics

Oxy-fuel combustion of pulverized coal: Characterization, fundamentals, stabilization and CFD modeling

Lei Chen et al.

PROGRESS IN ENERGY AND COMBUSTION SCIENCE (2012)

添加到收藏夹

Article Engineering, Chemical

Reaction kinetics and mass transfer studies of biomass char gasification with CO2

Thilakavathi Mani et al.

CHEMICAL ENGINEERING SCIENCE (2011)

添加到收藏夹

Article Energy & Fuels

Experimental investigation of NOx emissions in oxycoal combustion

Hannes Stadler et al.

FUEL (2011)

添加到收藏夹

Article Energy & Fuels

Combustion of Coal Chars in O2/CO2 and O2/N2 Mixtures: A Comparative Study with Non-isothermal Thermogravimetric Analyzer (TGA) Tests

Hao Liu

ENERGY & FUELS (2009)

添加到收藏夹

Article Chemistry, Applied

Differences in reactivity of pulverised coal in air (O2/N2) and oxy-fuel (O2/CO2) conditions

Renu Kumar Rathnam et al.

FUEL PROCESSING TECHNOLOGY (2009)

添加到收藏夹

Article Chemistry, Analytical

Comparison of pulverized coal combustion in air and in O2/CO2 mixtures by thermo-gravimetric analysis

Qingzhao Li et al.

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS (2009)

添加到收藏夹

Article Energy & Fuels

Interpretation of char reactivity profiles obtained using a thermogravimetric analyzer

Prabhat Naredi et al.

ENERGY & FUELS (2008)

添加到收藏夹

Article Energy & Fuels

Influence of diffusion on thermogravimetric analysis of carbon black oxidation

Qiang Song et al.

ENERGY & FUELS (2006)

添加到收藏夹

Article Energy & Fuels

Diffusional effects in CO2 gasification experiments with single biomass char particles.: 2.: Theoretical predictions

A. Gomez-Barea et al.

ENERGY & FUELS (2006)

添加到收藏夹

Article Thermodynamics

On the (MILD) combustion of gaseous, liquid, and solid fuels in high temperature preheated air

R Weber et al.

PROCEEDINGS OF THE COMBUSTION INSTITUTE (2005)

添加到收藏夹

Article Thermodynamics

The determination of activation energy from linear heating rate experiments: a comparison of the accuracy of isoconversion methods

MJ Starink

THERMOCHIMICA ACTA (2003)

添加到收藏夹

Article Chemistry, Analytical

Effect of particle size and heating rate on the pyrolysis of Silopi asphaltite

NE Altun et al.

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS (2003)

添加到收藏夹

Article Energy & Fuels

Reaction rates for the oxidation of highly sulphurised petroleum cokes:: the influence of thermogravimetric conditions and some coke properties

S Salvador et al.

FUEL (2003)

添加到收藏夹

Article Energy & Fuels

The role of char surface structure development in pulverized fuel combustion

H Lorenz et al.

FUEL (2000)

添加到收藏夹

© Peeref 2019-2024. All rights reserved.