Collaborative Research: Development of Diagnostic Tools for High Temperature Fluidized Beds

合作研究：高温流化床诊断工具的开发

• 批准号: 8801618
• 负责人: Alan George
• 金额: $ 12万
• 依托单位: Montana State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8801618&HistoricalAwards=false
• 关键词: Collaborative; Research; Development; Diagnostic; Tools

This research addresses the design, development and calibration of diagnostic tools for high temperature fluidized beds. An abrasion- resistant heat flux transducer will be used to measure the local heat flux between a high temperature fluidized bed and an immersed surface. An optical probe will be developed to detect the local presence of bubbles in high temperature beds. The optical probe will be used to measure the bubble size distribution, bubble rise speed, and volumetric bubble fraction. After the devices have been developed and calibrated, they will be used to understand the heat transfer in high temperature fluidized beds under a variety of operating conditions. Considerable attention has been devoted to the development of fluidized bed combustion processes for high sulfur coal and other solid fuels since the sulfur emissions from this technology can easily meet the air quality standards. Fluidized bed combustors also have the advantage of flexibility in regard to fuel type because they can be designed to burn several different types of fuels. Most of the previous studies of instantaneous local bed-to-surface heat transfer measurements are restricted to near room temperature conditions. The advancement of our understanding of fluidized beds requires the experimental characterization of the high temperature phenomena. This project will provide the experimental devices and data to meet this overall objective.

这项研究涉及的设计，开发和校准 高温流化床诊断工具。 只是擦伤- 电阻热流传感器将用于测量局部热量 高温流化床和浸没表面之间的通量。 将开发一种光学探针来检测局部存在的 高温床中的气泡。 光学探头将用于 测量气泡尺寸分布、气泡上升速度，以及 体积气泡分数 在设备开发完成后， 校准，他们将被用来了解热传递在高 在各种操作条件下的温度流化床。 相当多的注意力已经投入到发展， 高硫煤和其它煤的流化床燃烧方法 固体燃料，因为这项技术的硫排放很容易 符合空气质量标准。 流化床燃烧器还具有 燃料类型灵活性优点，因为它们可以 设计用于燃烧多种不同类型的燃料。 大部分 瞬时局部床面传热的前期研究 测量限于接近室温的条件。 的 要提高我们对流化床的认识， 高温现象的实验表征。 这 项目将提供实验装置和数据，以满足这一要求 总体目标。