Advanced Entrained-Flow Gasifier Modeling Based on an In-Situ Particle Conversion Study

基于原位颗粒转化研究的先进气流床气化炉建模

基本信息

项目摘要

The gasification of carbon-containing waste such as plastics is a key technology in the reduction of the carbon footprint resulting from the chemical industry's use of carbonaceous feedstock, and the essential aspect of a closed carbon cycle. In addition, it can help to overcome the waste problems faced by many countries worldwide. For alternative gasification feedstocks such as waste it is necessary to adapt the gasification technology to the current framework. One promising alternative to the classical, lengthy and cost-intensive method of technology development/adjustment from lab-scale to pilot-scale to demo-scale is numerical modeling.From the literature, only a few validated CFD models are capable of reliably reflecting local phenomena in a high-pressure/high-temperature reactor. To develop these reliable models, in-situ particle measurements in the bench-scale OMB gasifier operated at the East China University of Science and Technology will be combined with particle-resolved numerical studies on heterogeneous fuel conversion at TU Bergakademie Freiberg. Optical access to the OMB reactor allows local effects to be studied in situ, such as particle movement, particle transformation, and particle fragmentation. Measurements taken inside the process are the basis for developing advanced particle conversion models. Detailed, particle-resolved numerical simulations that comprise the coal/char conversion phenomena support this development. Based on the new, advanced submodels, the char conversion inside the bench-scale OMB gasifier will then be studied using CFD, and the results will be carefully validated against the measurements taken in the gasifier. As a next step, the conversion of alternative feedstocks, e.g. selected secondary raw materials, will be considered. For this purpose, experimental investigations will be carried out, the particle conversion behavior will be studied in detail, and the conversion submodels will be adjusted. Final calculations are designed to confirm the reliability and flexibility of the entire gasifier CFD model. The overall goal is to develop and approve advanced, validated CFD models that reliably predict the local conversion phenomena in industrial entrained-flow processes for different kinds of solid fuel as a basis for developing new technologies and utilizing alternative fuels.
塑料等含碳废物的气化是减少化学工业使用含碳原料产生的碳足迹的关键技术,也是封闭碳循环的重要方面。此外,它可以帮助克服世界上许多国家面临的废物问题。对于废物等替代气化原料,有必要使气化技术适应当前的框架。从实验室规模到中试规模再到示范规模的技术开发/调整的经典、冗长和成本密集的方法的一个有前途的替代方法是数值建模。从文献中看,只有少数经过验证的CFD模型能够可靠地反映高压/高温反应器中的局部现象。为了开发这些可靠的模型,在实验室规模的OMB气化炉运行在华东理工大学的现场颗粒测量将结合粒子解析的非均相燃料转化在TU Bergakademie弗赖贝格的数值研究。OMB反应器的光学访问允许在原位研究局部效应,例如粒子运动、粒子转化和粒子碎裂。在过程中进行的测量是开发先进的粒子转化模型的基础。详细的,粒子分辨的数值模拟,包括煤/焦炭转换现象支持这一发展。基于新的先进子模型,实验室规模的OMB气化炉内的焦炭转化将使用CFD进行研究,并将根据气化炉中的测量结果进行仔细验证。下一步,将考虑转化替代原料,例如选定的二次原料。为此,将进行实验研究,粒子转换行为将进行详细研究,并将调整转换子模型。最后的计算旨在确认整个气化炉CFD模型的可靠性和灵活性。总体目标是开发和批准先进的、经过验证的CFD模型,这些模型可以可靠地预测不同种类固体燃料的工业湍流过程中的局部转化现象,作为开发新技术和利用替代燃料的基础。

项目成果

期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The shape development of spherical and non-spherical char particles in the flame zone of an entrained-flow gasifier – A numerical study
气流床气化炉火焰区球形和非球形炭颗粒的形状发展——数值研究
The morphology evolution of char particles during conversion processes
  • DOI:
    10.1016/j.combustflame.2020.11.038
  • 发表时间:
    2021-04
  • 期刊:
  • 影响因子:
    4.4
  • 作者:
    Cong B. Nguyen;Cong B. Nguyen;Johannes Scherer;M. Hartwich;A. Richter
  • 通讯作者:
    Cong B. Nguyen;Cong B. Nguyen;Johannes Scherer;M. Hartwich;A. Richter
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Professor Dr.-Ing. Andreas Richter其他文献

Professor Dr.-Ing. Andreas Richter的其他文献

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{{ truncateString('Professor Dr.-Ing. Andreas Richter', 18)}}的其他基金

Large-scale integrated microfluidic circuits based on intrinsically active polymers
基于本质活性聚合物的大规模集成微流控电路
  • 批准号:
    192312245
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Polymere Mikrosysteme
聚合物微系统
  • 批准号:
    161387722
  • 财政年份:
    2009
  • 资助金额:
    --
  • 项目类别:
    Heisenberg Professorships
Optoelektronische Ansteuerung für hochintegrierte MEMS auf Polymerbasis
用于高度集成聚合物基 MEMS 的光电控制
  • 批准号:
    59225249
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Integrierte und hochintegrierte mikrotechnische Systeme
集成和高度集成的微技术系统
  • 批准号:
    61170868
  • 财政年份:
    2008
  • 资助金额:
    --
  • 项目类别:
    Heisenberg Fellowships
Hydrogelbasierte Mikrofluidik-Prozessoren
基于水凝胶的微流体处理器
  • 批准号:
    30593839
  • 财政年份:
    2007
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Controllable membrane system for the separation of soft particles
用于分离软颗粒的可控膜系统
  • 批准号:
    382900294
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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