Integrated treatment device for ship waste gas

A treatment device and oxidation device technology, applied in the direction of gas treatment, chemical instruments and methods, membrane technology, etc., can solve the problems of low removal efficiency, difficult operation and maintenance, serious secondary pollution, etc., achieve high-efficiency reaction, save water Effects of treatment piping layout, efficient adsorption and desorption

Inactive Publication Date: 2019-07-16
HARBIN ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an integrated ship exhaust gas treatment device that overcomes the shortcomings of the prior art, such as low removal efficiency, serious secondary pollution, and difficult operation and maintenance.

Method used

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  • Integrated treatment device for ship waste gas
  • Integrated treatment device for ship waste gas
  • Integrated treatment device for ship waste gas

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Embodiment Construction

[0024] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0025] combine Figure 1-2 , the present invention mainly includes a pollutant adsorption device 5 , a waste heat recovery system (WHR) 4 , a washing tower 6 , an air bottle 15 and a NO oxidation device 11 . Utilize pollutant adsorption device 5 to NO and SO in waste gas 2 For enrichment, the adsorbent includes molecular sieve, Al 2 o 3 and so on for NO and SO 2 substances to be adsorbed. Utilize Na 2 SO 3 The solution and the washing waste liquid produced by desulfurization are used together as the washing liquid for denitrification, realizing the transformation of waste into treasure. The NO is oxidized by intermittently working ultraviolet rays and the air supplied by the air bottle, and the oxidation rate is relatively high. Use the waste heat recovery system (WHR) to reduce the temperature of the exhaust gas, and use the adsorbent to remove NO and SO ...

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Abstract

The invention aims to provide an integrated treatment device for ship waste gas. The integrated treatment device for the ship waste gas comprises a waste gas three-way valve, a ventilation three-way valve, a WHR system, a pollutant adsorption device, a washing tower and an air bottle. The waste gas of a marine diesel engine communicates with an inlet of the waste gas three-way valve; a first outlet of the waste gas three-way valve communicates with a discharge pipe, and a second outlet of the waste gas three-way valve communicates with an inlet of the ventilation three-way valve; a first outlet of the ventilation three-way valve communicates with a high-temperature waste gas inlet of a desorption chamber; the gas of the desorption chamber is discharged into the washing tower from a high-concentration pollutant waste gas outlet; a second outlet of the ventilation three-way valve communicates with a low-temperature waste gas inlet of an adsorption chamber through a WHR system; a first outlet of the air bottle is connected with an NO oxidation device in the washing tower; a second outlet of the air bottle is connected to a compressed air inlet of the adsorption chamber; and the gas ofthe adsorption chamber communicates with the discharge pipe through a clean waste gas outlet. The problems of low removal efficiency, serious secondary pollution, difficulty in running and maintenance and the like in a traditional ship integration technology are solved.

Description

technical field [0001] The invention relates to an exhaust gas post-processing device, in particular to a marine diesel engine exhaust gas post-processing device. Background technique [0002] Diesel engines are widely used as marine engines because of their advantages such as high power, high efficiency, and low specific emissions of carbon dioxide. Because marine diesel engines burn high-sulfur low-quality fuel oil, the exhaust gas contains a large amount of NO and SO2. These two substances are harmful gas pollutants that will seriously affect the natural environment and human health. The emission of SO2 has strict limit standards, and many scientific research institutions are committed to the research of clean emission of ship exhaust gas. [0003] NO in ship exhaust gas is extremely difficult to dissolve in water, so it is very difficult to use common wet integrated removal. At present, the mature emission control technology is mainly selective catalytic reduction techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/92B01D53/56B01D53/50B01D53/04
CPCB01D53/04B01D53/502B01D53/56B01D53/92B01D2251/304B01D2251/604B01D2257/302B01D2257/404B01D2258/01B01D2259/804
Inventor 周松张钊朱元清冯永明
Owner HARBIN ENG UNIV
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