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AN INVESTIGATION ON COMBINED PROCESSING USING COAL AND PETROLEUM RESIDS (LIQUEFACTION).

机译：煤渣和石油渣油联合处理的研究（液化）。

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摘要

The coprocessing of coal with petroleum resids simultaneously liquefies the coal and upgrades the petroleum resids. Combining coal liquefaction with petroleum processing can enhance the merits of both processes by producing a valuable and readily refinable synthetic fuel from two low-cost and low value hydrocarbon resources. A major advantage of coprocessing is that liquid synfuels can be produced from coal at lower processing costs than from a stand-alone coal liquefaction facility.;To improve the efficiency of coprocessing, the concept of two-stage processing was applied to coprocessing. An inexpensive disposable catalyst was compared to commercial NiMo/Al(,2)O(,3) catalysts. Addition of hydroaromatic compounds to enhance hydrogen transfer in coprocessing was also studied. Moreover, the effect of blending coal-derived solvents and creosote on coprocessing was studied.;Because catalyst deactivation is a major problem in resids upgrading and coprocessing, a study was made to assess the reduction in effective diffusivity of a model compound system using conventional catalyst pellets employed in the hydrotreatment of coal liquids. A mathematical model describing the diffusion of solute into the catalyst has been applied in diffusivity measurements. Through oxidative regeneration, pore blockage and changes in pore constrictivity were verified as one of the reasons causing catalyst deactivation.;To assess the feasibility of coprocessing, the effects of process conditions, feedstock characteristics, catalyst form (either powdered or pelleted) and solvent treatment on coprocessing were evaluated. Coal liquefaction using a coal-derived solvent, a typical hydrogen donor, and an aliphatic solvent were also investigated for purposes of comparison. Chemical and physical characterization of petroleum solvents was accomplished through solvent separation, elemental analysis, ('1)H NMR analysis, viscosity, API gravity, molecular weight and Conradson carbon residue. Hydrotreatment of petroleum resids resulted in the upgrading of resids by lowering viscosity and Conradson carbon residue and increasing API gravity.
机译：煤与石油渣油的共处理会同时使煤液化并提升石油渣油的质量。煤液化与石油加工相结合可以通过从两种低成本和低价值的碳氢化合物资源生产有价值且易于精炼的合成燃料来增强两种工艺的优点。协同处理的一个主要优点是，与单独的煤液化设施相比，煤制得的液体合成燃料的加工成本更低。为了提高协同处理的效率，将二级加工的概念应用于了协同处理。将便宜的一次性催化剂与商用NiMo / Al（，2）O（，3）催化剂进行了比较。还研究了添加氢芳族化合物以增强共处理中的氢转移。此外，还研究了煤衍生的溶剂和杂酚油混合对共处理的影响。；由于催化剂失活是渣油提质和共处理中的主要问题，因此进行了一项研究，以评估使用常规催化剂的模型化合物系统的有效扩散率降低煤液加氢处理中使用的颗粒。描述扩散到催化剂中的溶质扩散到催化剂的数学模型。通过氧化再生，证实孔堵塞和孔收缩率变化是引起催化剂失活的原因之一。为了评估共处理的可行性，工艺条件，原料特性，催化剂形式（粉状或粒状）和溶剂处理的影响对协同处理进行了评估。为了进行比较，还研究了使用煤衍生的溶剂，典型的氢供体和脂族溶剂进行的煤液化。石油溶剂的化学和物理表征是通过溶剂分离，元素分析，（1）H NMR分析，粘度，API重力，分子量和Conradson碳残基来完成的。石油渣油的加氢处理通过降低粘度和Conradson碳渣并增加API重力来提高渣油的纯度。

著录项

  • 作者

    TSAI, KAN-JOE.;

  • 作者单位

    Auburn University.;

  • 授予单位 Auburn University.;
  • 学科 Chemical engineering.
  • 学位 Ph.D.
  • 年度 1985
  • 页码 320 p.
  • 总页数 320
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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