Method of recycling collected exhaust particles

Patent · Tue Jul 13 00:00:00 EDT 1982

OSTI ID:6543442

Dolan, D F; Kittelson, D B; Liu, B Y; Pui, D Y

The method and apparatus for controlling particulate emissions from a combustion apparatus, as a diesel engine. Diesel engine exhaust particles are electrically charged during the formation of the particles in the engine combustion chamber. A particle collector is used to collect the electrically charged particles on collecting structures connected to a high voltage power supply and ground. The collecting structures of the particle collector can be a plurality of parallel metal plates, spaced cylindrical rods, or concentrically located cylindrical members. A fibrous matrix can be located adjacent the particle collecting structure to collect the charged particles as they move through the matrix. In one embodiment, the collected particles separate from the collecting structures and return to the engine intake. In another embodiment, a removable collecting cartridge has electrically conductive plates for collecting the charged particles. The entire cartridge is removed for cleaning or replacement. The hot exhaust gas from the engine can be used to oxidize the collected particles. The collected particles that are not oxidized can be separated from the collecting structures and re-entrained into the gas. The re-entrained particles are larger than the particles formed in the combustion apparatus. The large particles can be removed by a downstream particle collection device or mixed with fuel for the engine.

• Assignee: Regents Of Univ Of Minn
• Patent Number(s): US 4338784
• OSTI ID: 6543442
• Resource Relation: Patent File Date: Filed date 11 Dec 1980; Other Information: PAT-APPL-215457
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
EXHAUST GASES
PARTICLES
SEPARATION PROCESSES
CHARGED PARTICLES
FIBERS
INTERNAL COMBUSTION ENGINES
MATRICES
METALS
PLATES
POLLUTION CONTROL EQUIPMENT
ELEMENTS
ENGINES
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
WASTES
330102* - Internal Combustion Engines- Diesel