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Title:
DESULFURIZATION DEVICE
Document Type and Number:
Japanese Patent JP2010216267
Kind Code:
A
Abstract:

To desulfurize an inlet, by heating the inlet of an oxidation catalyst with a small-sized burner requiring only small amounts of fuel and combustion air.

The desulfurization device includes: a burner 23 arranged to obliquely spray fuel with combustion air in a fan-like manner, from the side of the inlet of the oxidation catalyst 14; a plurality of small-sized oxidation catalyst pieces 31 disposed between the injection port of the burner 23 and the inlet of the oxidation catalyst 14 to be arranged in a fan-like manner in an injection direction of the fuel from the injection port; a discharge terminal 32 igniting the fuel injected from the injection port of the burner 23; a bypass conduit 34 extracting part of exhaust gas 9 flowing in an exhaust system path and blowing the exhaust gas toward the inlet of the oxidation catalyst 14 through the conduit in the small-sized catalyst piece 31; and a fuel injection device performing post-injection for adding the fuel into the exhaust gas 9 upstream of the bypass conduit 34.


Inventors:
FUNAHASHI HIROSHI
Application Number:
JP2009060573A
Publication Date:
September 30, 2010
Filing Date:
March 13, 2009
Export Citation:
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Assignee:
HINO MOTORS LTD
International Classes:
F01N3/20; F01N3/02; F01N3/36; F02D41/38
Domestic Patent References:
JP2000320322A2000-11-21
JP2002089327A2002-03-27
JP2007146700A2007-06-14
JPH0586845A1993-04-06
Attorney, Agent or Firm:
Yamada Patent Office