Simultaneous Removal of Soot and NOx From the Exhaust of Diesel Powered Vehicles Using a Rotating Fluidized Bed Filter

摘要- CTS-9408946 Pfeffer - NJIT提出探索使用旋转离心床过滤器与“自洁”沸石催化剂去除内燃机尾气中的烟尘和NOx。它在减少移动式柴油发动机造成的空气污染方面的应用也将进行测试。PI提出了旋转流化床作为变速除尘器。PI的一位合作者在东京大学对一种“自清洁”沸石催化剂进行了初步测试。在695开尔文温度下，烟尘和NOx与由铜离子交换ZSM-5沸石催化剂组成的流化床先后相互作用，产生N2和CO2的排放，并使原催化剂不断再生。该项目旨在验证几种颗粒催化剂的“自清洁”，它们的应用范围，以及催化剂保持活性的时间尺度。如果初步研究是积极的，流化床装置将被设计成直接附着在移动柴油动力车辆上，并在现场进行测试，目的是减少空气污染。如果成功，这项研究可能会导致内燃机的多功能过滤器，与现有的各种环境技术应用系统相比，性能得到改善。

ABSTRACT -- CTS-9408946 Pfeffer - NJIT It is proposed to explore the use of a rotating centrifugal bed filter with a "self cleaning" zeolite catalyst for removal of soot and NOx from the exhaust of internal combustion engines. Its application for reducing air pollution from mobile Diesel engines will also be tested. The rotating fluidized bed as a dust filter with variable speed was proposed by the PI. A preliminary test for a "self cleaning" zeolite catalyst has been performed in the University of Tokyo, by a collaborator of the PI. At 695 degrees Kelvin, the soot and NOx interacted successively with the fluidized bed composed of a copper ion-exchange ZSM-5 zeolite catalyst, resulting in emissions of N2 and CO2 and a continuous regeneration of the original catalyst. This project aims to verify the "self cleanliness" of several particulate catalysts, their range of application, and the time scales over which the catalysts would remain active. If the preliminary study is positive, a fluidized bed device will be engineered for direct attachment to a mobile Diesel-powered vehicle and tested in situ with the objective of reducing air pollution. If successful, the research may lead to a versatile filter for the internal combustion engines, with improved performances as compared to existing systems for a variety of applications in environmental technology.