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PERFORMANCE AND MODELING OF A HOT POTASSIUM-CARBONATE ACID GAS REMOVAL SYSTEM IN TREATING COAL GAS.

机译:热煤炭酸钾钾气去除系统的性能和建模。

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摘要

Aqueous solutions of potassium carbonate, with and without an amine additive, were used as the acid gas removal solvent in the Coal Gasification/Gas Cleaning Test Facility at North Carolina State University. The acid gas removal system consisted of a packed absorption column, flash tanks, and a packed stripping column operated with a reboiler. Information on the removals of CO(,2), H(,2)S, COS, and other species from the crude coal gas was provided, as well as data on their distribution in regeneration exit streams. Operating conditions for the selective removal of sulfur species were also examined.;The agreement between program predictions and pilot plant data is quite good, supporting the assumptions of the model. Program simulations provide insights into the effects of changes in process variables on system operation.;To better understand the process and extend pilot plant results to industrial situations, a system model was developed and incorporated into a simulation program. The model was based on the mass transfer rate of a key component, CO(,2), with the assumption that non-key reactive components affect the equilibrium of the key component, but not its mass transfer rate. The absorption and stripping of non-key components were assumed controlled by equilibrium between the gas and liquid phases in these columns. An isothermal flash model for chemical solvents was also developed and included in the program.
机译:在北卡罗来纳州立大学的煤气化/煤气净化测试设备中,使用碳酸钾水溶液(带有或不带有胺添加剂)作为酸性气体去除溶剂。酸性气体去除系统由填充吸收塔,闪蒸罐和带再沸器的填充汽提塔组成。提供了有关从粗煤气中去除CO(,2),H(,2)S,COS和其他物质的信息,以及它们在再生出口物流中分布的数据。还检查了选择性去除硫物质的操作条件。程序预测与试验工厂数据之间的一致性很好,支持了该模型的假设。程序模拟提供了对过程变量的变化对系统运行的影响的见解。为了更好地理解过程并将中试工厂的结果扩展到工业环境,开发了系统模型并将其合并到模拟程序中。该模型基于关键成分CO(,2)的传质速率,并假设非关键反应成分会影响关键成分的平衡,但不会影响其传质速率。假定通过这些塔中气相和液相之间的平衡来控制非关键组分的吸收和汽提。还开发了化学溶剂的等温闪蒸模型,并将其包括在程序中。

著录项

  • 作者

    STATON, JAMES STEPHEN.;

  • 作者单位

    North Carolina State University.;

  • 授予单位 North Carolina State University.;
  • 学科 Chemical engineering.
  • 学位 Ph.D.
  • 年度 1985
  • 页码 414 p.
  • 总页数 414
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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