Studies on regeneration of diesel exhaust particulate filters by microwave energy

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · SAE Special Publication

OSTI ID:81384

Zhang, C; Min, J; Chen, J; Liang, L; Liu, J; Li, C ^[1]

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1. Dalian Univ. of Technology (China)

It is a new idea and beneficial attempt that the microwave heating technology is applied to regenerate the Diesel Exhaust Particulate Filters (DEPF). In this paper, the microwave regenerating mechanism of DEPF is studied and some laws in the process of microwave regeneration are found by experimental and theoretical analyses. Some basic measurements and calculations of microwave characteristic factors of three kinds of selected DEPF and the pure particulate are presented. A Microwave Regenerating Test System (MRTS) is set and the microwave regeneration of DEPF is tested. A mathematical model of two dimensional axi-symmetrical non-steady temperature field is set up which is suitable for microwave regenerating process of ceramic foam filters. The numerical calculation and practical analyses are stated. It is proved by these studies that the particulate in DEPF is selectively heated by microwave energy and moreover the microwave energy is less absorbed by the pure ceramic filters. The microwave regeneration of DEPF is feasible from the point of economic effects, social benefit and technology. The power of MRTS which makes DEPF safely and effectively regenerated can be controlled under 1000W, even around 600W. 5 refs., 12 figs., 5 tabs.

• OSTI ID: 81384
• Report Number(s): CONF-9409289--
• Journal Information: SAE Special Publication, Journal Name: SAE Special Publication Journal Issue: 1050; ISSN SAESA2
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CERAMICS
CHEMICAL COMPOSITION
DIESEL ENGINES
ELECTROMAGNETIC FILTERS
EXHAUST GASES
FILTRATION
MICROWAVE HEATING
NUMERICAL DATA
PARTICULATES
REGENERATION