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Device and method for treating waste gas

A technology of exhaust gas post-treatment and equipment, which is applied in the direction of exhaust gas treatment, mechanical equipment, gas channels, etc., and can solve problems such as difficult combination

Active Publication Date: 2012-11-28
WAERTSILAE SCHWEIZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This arrangement of the catalytic converter is relatively compact; however, the exhaust manifold has a larger diameter than an exhaust manifold without a catalytic converter, and said larger diameter can only be combined with difficulty in the diameter of the turbocharger, so that additional space requirements remain an issue

Method used

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  • Device and method for treating waste gas
  • Device and method for treating waste gas
  • Device and method for treating waste gas

Examples

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Embodiment Construction

[0032] figure 1An embodiment of a large diesel engine 1 according to the invention is shown. Large diesel engines, especially large two-stroke diesel engines, such as are used in ships and power plants, generally comprise one or more of the following components: a crankshaft rotatably supported in a crankcase 4, at least one crosshead And at least one piston 2 arranged in a cylinder liner 3 in a movable manner. Typically, the piston 2 is connected in each case via a piston rod 2a to a crosshead, and the crosshead is connected in each case via a connecting rod to a crankshaft for driving said crankshaft. The cylinder liner 3 is usually terminated upwards by the cylinder head, so that a cylinder space (also called combustion space) emerges between the piston and the cylinder head.

[0033] In modern large-scale two-stroke diesel engines, direct-flow scavenging of the cylinder space is usually provided, that is, as soon as the piston 2 is located below the scavenging slit 3a, t...

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Abstract

Provided is a device (1) and a method for treating waste gas of a large diesel engine (2). The device (10) has an elongated exhaust gas manifold (7) with a plurality of inlets (7.1a, 7.1a', 7.1a'', 7.2a, 7.2a') distributed along a longitudinal direction thereof for receiving exhaust gas from the large diesel engine, and the device (10) also comprises an elongated catalytic converter container (8) connected to the exhaust gas manifold, wherein, a plurality of catalytic converter components are arranged in the container, and the container has an outlet (8a). The exhaust gas manifold (7) and the catalytic converter container (8) are arranged parallel to each other and separated from each other by a partition wall (9) extending along the longitudinal direction. The exhaust gas manifold (7) is connected to the catalytic converter container (8) via orifices (9.1a, 9.2a), which are provided in the partition wall (9), to guide the exhaust gas to the corresponding outlet (8a) during operation of the device through the catalytic converter components.

Description

technical field [0001] The invention relates to a device for exhaust gas aftertreatment of a large diesel engine (in particular a large two-stroke diesel engine), a large diesel engine (in particular a two-stroke diesel engine) having at least one such device for exhaust gas aftertreatment according to the preamble of claim 1 stroke diesel engine), and a method according to the preamble of claim 13 for aftertreatment of exhaust gases in a large diesel engine. Background technique [0002] Catalytic converters are increasingly used in large diesel engines, especially large two-stroke diesel engines, such as those used in ships and power plants, to reduce exhaust emissions and to meet increasingly stringent environmental standards. The so-called Selective Catalytic Reduction (SCR) is mainly used to reduce the nitrogen oxide content, in which ammonia or ammonia-generating substances are mixed into the exhaust gas to maintain the catalytic reduction. [0003] Conventional devic...

Claims

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Application Information

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IPC IPC(8): F01N3/28F01N13/10
CPCF02B25/00F01N2470/18F01N3/2066F01N2610/00F01N13/10F01N2610/1453F01N2013/045Y02T10/24F02B2700/03F01N3/28F01N13/087F02B2075/025F01N13/017F02B25/02F02B37/00Y02T10/12B05B17/06F01N3/10F01N2230/04F01N2340/04F01N2340/06
Inventor 莱内尔·舒尔茨
Owner WAERTSILAE SCHWEIZ AG
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