Industry/University Cooperative Research Activity: Microreactors Simulating Large Fluid Beds

产学合作研究活动：模拟大型流化床的微反应器

• 批准号: 8620244
• 负责人: Y. A. Liu
• 金额: $ 25.8万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-01 至 1990-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8620244&HistoricalAwards=false
• 关键词: Industry; University; Cooperative; Research; Activity

Narrative: The principal investigators propose to develop a family of novel microreactors that could simulate the reaction kinetic performance to be expected in commercial-scale fluid beds of powdered catalysts. Design of the microreactors will exploit a newly discovered phenomenon: about 0.5 mm layer of fluid cracking catalyst (FCC) powder on the floor of a horizontal duct of rectangular cross-section, vibrated vertically at about 25 Hertz with an amplitude of several milimeters, appears to enjoy intimate contact with "supernatant" gas flowing laterally above the powder. Cold-model experiments would study the dispersion of sulfur hexafluoride (SF6) gas in the ducts. Variables in experiments would be humidity (causing SF6 adsorptivity to vary), degree of solid back-mixing, and, in the models with flow of powder, the ratio of flow of solid and gas. Later, a hot microreactor would be built for kinetic studies of a catalytic reaction with once-through flow of solids. The ultimate objective would be development of a family of microreactors for hot kinetic studies with capabilities for commercial size fluid bed reactors.

叙述：主要研究者建议制定一项 一系列新型微反应器，可以模拟反应 在商业规模流体中预期动力学性能 粉末状催化剂床。 微反应器的设计将 利用一个新发现的现象：约0.5毫米的层， 流化裂化催化剂（FCC）粉末在地板上， 矩形横截面水平振动管道 垂直地以大约25赫兹的振幅， 毫米，似乎享受亲密接触“上清” 气体在粉末上方横向流动。 冷模实验 将研究六氟化硫（SF6）气体在 管道 实验中的变量将是湿度（导致 SF6吸附性变化），固体返混程度，以及， 建立了考虑粉末流量、固体流量和固体流量比的模型 气体 后来，为了动力学而建造了一个热微反应器 催化反应的研究与单程流动的 固体 最终目标是发展家庭 用于热动力学研究的微型反应器， 商业规模的流化床反应器。