TECHNICAL DESIGN OF EXHAUST GAS FILTERS. VOLUME 1: LOSS OF FLOW IN CATALYTIC EXHAUST GAS FILTERS

TEKNISK UTFORMNING AV AVGASRENARE. DELRAPPORTL: STROEMNINGSFOERLUSTER I KATALYTISKA AVGASRENARE

Measurements of pressure and flow velocity were carried out on five catalytic exhaust emission control systems for mining equipment. The aim was to study the influence of design on the exhaust gas flow and outlet pressure. The tests were carried out on commonly used systems employing a Volvo D 96 B diesel engine loaded by a schenk eddy current brake. Catalytic converters of the pellet type employed radial or vertical flow whereas monolithic converters employed axial flow. Pressure and velocity measurements were carried out using a Pitot tube and access holes in the walls of the exhaust pipes and converters. In addition, the exhaust gas temperature was monitored continuously at various stations in the converters. The tests show that the converters produced significantly differing pressure drops. A common feature was that the catalytic container produced the greater part of the flow resistance, while the influence of the catalytic stratum itself was comparatively small. The above holds for the converters of the pellet type. Four of the converters examined have an unsuitable design of the inlet and outlet areas. In some of the converters, the flow grids are undersized. The measurements have also shown that too high stress levels may occur in the converters in connection with resonance phenomena which may arise in long exhaust pipes. /TRRL/

• Corporate Authors:

  Lulea University, Sweden

  S-95187 Lulea,   Sweden 
• Authors:
  • Rehnberg, O
  • Forsberg, H
• Publication Date: 1977-10

Language

• Swedish

Media Info

• Features: Figures; Photos; References;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: Catalysis; Catalytic converters; Diesel engines; Equipment; Exhaust gases; Exhaust pipes; Filters; Flow; Mines; Pressure; Prevention; Speed; Temperature; Velocity
• ITRD Terms: 7127: Catalysis; 1314: Diesel engine; 2442: Emission; 3674: Equipment; 1384: Exhaust pipe; 5430: Flow (fluid); 5117: Mine; 5412: Pressure; 9149: Prevention; 5408: Speed
• Subject Areas: Bridges and other structures; Construction; Highways; Safety and Human Factors; Security and Emergencies; Vehicles and Equipment; I54: Construction of Tunnels; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00182659
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Teknisk Rpt 1977:58TMonograph
• Files: ITRD, TRIS
• Created Date: Dec 29 1978 12:00AM