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Integrated device for conducting desulfurization and denitrification on marine diesel engine tail gas

A marine diesel engine, desulfurization and denitrification technology, applied in the field of exhaust gas treatment devices of marine diesel engines, can solve the problems of limited treatment effect, temperature limitation, difficult to adapt to complex working conditions, etc., and achieve good effect, prolonged time, and small footprint Effect

Active Publication Date: 2016-08-17
HARBIN ENG UNIV
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  • Application Information

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Problems solved by technology

In addition, seawater scrubbing absorbs NOx and SOx emissions are limited by temperature, it is difficult to adapt to the complex working conditions of ships, and the treatment effect is limited

Method used

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  • Integrated device for conducting desulfurization and denitrification on marine diesel engine tail gas
  • Integrated device for conducting desulfurization and denitrification on marine diesel engine tail gas
  • Integrated device for conducting desulfurization and denitrification on marine diesel engine tail gas

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Embodiment Construction

[0021] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0022] combine figure 1 ~2. The present invention utilizes the ship power supply device to provide electric energy for generating plasma, changes the layout of the original plasma generator, and adopts a coaxial cylindrical tube-and-tube dielectric barrier discharge plasma generator to generate plasma. Dielectric barrier discharge can generate large space and high density plasma at normal pressure and low temperature, which is suitable for complex working conditions such as ship navigation. At the same time, the internal electrodes of the plasma generator in the present invention adopt a tubular arrangement, which increases the discharge area and plasma generation space, increases the number of active groups, prolongs the interaction time with the tail gas, and fully oxidizes NO and SO2 in the tail gas. Ammonia gas is then introduced to react with the generated H...

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Abstract

The invention aims at providing an integrated device for conducting desulfurization and denitrification on marine diesel engine tail gas. The device comprises a plasma generator, a power supplying device, a high voltage electricity generator, a dry type dust collector, granulation equipment and ammonia supplying equipment, the plasma generator is provided with a tail gas inlet, a tail gas outlet and an ammonia inlet, an exhaust pipe of a marine diesel engine is connected with the tail gas inlet, the tail gas outlet is connected with the dry type dust collector, the dry type dust collector is connected with the granulation equipment and the atmosphere, the power supplying device is connected with the high voltage electricity generator, and the high voltage electricity generator is connected with the plasma generator. By means of the desulfurization and denitrification integrated device, the occupied land area is reduced, efficiency of a discharging power source is improved, the plasma generation area is increased, the acting time of tail gas and plasmas is prolonged, treatment efficiency is improved, and meanwhile the flow velocity and temperature of the tail gas are also controlled to a certain extent.

Description

technical field [0001] The invention relates to a marine diesel engine, in particular to an exhaust gas treatment device of the marine diesel engine. Background technique [0002] Heavy fuel oil is a common fuel for marine diesel engines. The main harmful gas components in its exhaust gas are NOx (mainly NO) and SOx (mainly SO2), which can easily cause acid rain and photochemical smog, which is harmful to human health and the environment. To this end, the International Maritime Organization has formulated a series of anti-pollution conventions to strictly limit the emission of harmful components in ship exhaust. At the same time, countries are also actively developing ship exhaust treatment devices to treat NOx and SOx in the exhaust. [0003] The current single treatment method for ship exhaust has problems such as large initial investment, large floor area, complex system management, easy corrosion of equipment, catalyst leakage, and the impact of salinity in sea areas. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/92B01D53/60C05C3/00
CPCB01D53/60B01D53/92B01D2251/10B01D2258/012B01D2259/122B01D2259/4566B01D2259/818C05C3/00
Inventor 朱元清席鸿远周松周金喜王占广刘佃涛
Owner HARBIN ENG UNIV
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