Exhaust gas purifying system for vessel engine

An exhaust gas purification system and engine technology, which is applied to motor-driven engines, engine components, combustion engines, etc., to achieve the effect of saving man-hours, reducing burdens, and labor-saving burdens

Active Publication Date: 2011-08-17
YANMAR POWER TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since this system does not require a huge tank, it is more realistic than the tank-only system. However, it takes a lot of man-hours to supply the produced urea water to the aqueous solution tank with a manual gun, and it is difficult to be developed in a labor-saving manner. Current ships accept

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  • Exhaust gas purifying system for vessel engine
  • Exhaust gas purifying system for vessel engine
  • Exhaust gas purifying system for vessel engine

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Embodiment Construction

[0046] Next, embodiments of the invention of the present application will be described with reference to the drawings. figure 1 It is a conceptual block diagram showing equipment and devices related to the invention of the present application, figure 2 is a diagram showing the specific structure of the device, image 3 It is a concept image of a ship under sail. First, the arrangement and the like of the facilities and devices will be described.

[0047] (1).Basic structure around the engine

[0048] Such as figure 1 As shown, the ship has a diesel engine 1 , and a generator 2 is connected to the engine 1 . The engine 1 is supplied with fuel from any one of a normal fuel tank 3 and a low-sulfur fuel tank 4 . exist figure 1 In the figure, in order to simplify the description, the state in which the switching valve (three-way valve) 6 is interposed on the fuel line 5 connecting the two fuel tanks 3, 4 and the engine 1 is described, but in practice, it can be considered th...

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Abstract

A vessel is loaded with a general fuel (C-heavy oil) tank (3) and a low-sulfur fuel (A-heavy oil) tank (4). In the exhaust line of an engine (1), an SCR catalyst (10) of a urea water spray type is arranged and a bypass exhaust pipe (16) in which the exhaust gas passes not through the SCR catalyst (10) is also arranged. An automatic vessel-position detecting means (B) and a restriction map are collated to compute the distance to the sea area of a restriction target automatically. On the arrival at the restriction-target sea area, the function of the SCR catalyst (10) is stopped by changing the fuel automatically from the general fuel to the low-sulfur fuel and by discharging the exhaust gas to the bypass exhaust pipe (16). The change of the exhaust gas purifying state is automatically made.

Description

technical field [0001] The present invention relates to an exhaust gas purification system for an engine (diesel engine) of a ship, and more specifically, to an exhaust gas purification system for a ship that enters and exits a sea area where emission of harmful components in exhaust gas is restricted. Background technique [0002] Ships are generally equipped with diesel engines, but they are required to purify NOx (nitrogen oxides) contained in exhaust gas similarly to land vehicles. In addition, since heavy oil is used as fuel in marine diesel engines, SOx (sulfur oxide) is often contained in exhaust gas, so purification of SOx is also required. [0003] Therefore, as a NOx (nitrogen oxide) purification means, an SCR catalyst purification method using urea as a reducing agent has been generalized. In this SCR catalyst purification method, a honeycomb structure made of a material such as V and Cr supported on an oxide carrier such as Ti is generally used, and if urea is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H21/14B01D53/86B01D53/94B63H21/32B63H21/38F01N3/08F01N3/20F01N3/24
CPCB01D2259/4566F01N3/208B63B2770/00B01D53/9409F01N3/2053B63H21/38B01D53/86F01N2590/02F01N2610/10F01N2610/02Y02T10/24F01N2610/12F02D19/0657B01D2258/01B63H21/32B01D2251/2067F01N3/2066F01N2900/12B01D2258/012B01D53/9495F01N2900/102B63H21/14F01N3/0878B63J2002/125Y02T10/12Y02T10/30B01F21/10B01F35/2112B01F35/93B01F2035/99F01N3/08
Inventor 待田彻井上刚横山哲也古东文哉鬼追和睦
Owner YANMAR POWER TECHNOLOGY CO LTD
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