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Ship exhaust gas treatment system

A technology for processing system and ship exhaust, applied in gas treatment, membrane technology, dispersed particle separation, etc., can solve problems such as atmospheric environment and human health threats, and achieve low energy consumption, high denitrification and sulfur removal efficiency, and reduced volume. Effect

Inactive Publication Date: 2019-01-18
CHENGXI SHIPYARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tail gas emitted by ships contains a large amount of nitrogen oxides (NO x ), sulfur oxides (SO x ), particulate matter (PM) and other harmful substances have posed a serious threat to the atmospheric environment and human health in coastal countries

Method used

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  • Ship exhaust gas treatment system
  • Ship exhaust gas treatment system
  • Ship exhaust gas treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Use this device for the treatment of ship exhaust, NO in ship exhaust x The concentration is 800mg / L, SO X Concentration is 700mg / L, and the absorption liquid in the first storage tank is the sodium hypochlorite solution that concentration is 300mg / L, wherein the graphene photocatalyst is graphene modified nano-titanium dioxide, and the NO detected by the chimney outlet x The concentration is 76mg / L, SO X The concentration is 0mg / L.

Embodiment 2

[0034] The difference between embodiment 2 and embodiment 1 is that wherein the graphene photocatalyst is a graphene composite flower-shaped bismuth tungstate photocatalyst, and the NO detected by the chimney outlet x The concentration is 69mg / L, SO X The concentration is 0mg / L.

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Abstract

The invention discloses a ship exhaust gas treatment system. The ship exhaust gas treatment system comprises a dust removal device, a photocatalytic device, an absorption tower, a first storage tank,a second storage tank, an electrolysis device, a filter and an absorption liquid treatment device which are sequentially connected, the absorption tower is internally provided with a multi-stage sprinkler device and a demister, a liquid discharge port of the absorption tower is in pipe communication with a liquid inlet of the second storage tank, and a liquid inlet of the first storage tank and aliquid outlet of the second storage tank are respectively in pipe communication with a liquid outlet of the electrolysis device, the liquid inlet of the electrolysis device is in pipe communication with an outlet end of the filter, a pipe by which the liquid outlet of the second storage tank is communicated with the liquid outlet of the electrolysis device is provided with an absorption liquid circulation pump, the discharge port at the lower end of the second storage tank is in pipe communication with a liquid inlet of the absorption liquid processing device, and the photocatalytic device isinternally provided with a light source and a mesh structure loaded with a graphene photocatalyst. In the system, photocatalytic oxidation is combined with wet desulfurization and denitration technology. The system is small in size and has high purification efficiency and meets environmental protection requirements.

Description

technical field [0001] The invention belongs to the technical field of ship exhaust gas treatment and specifically designs a ship exhaust gas treatment system. Background technique [0002] At present, maritime transportation has undertaken more than 90% of my country's foreign trade transportation volume. However, the tail gas emitted by ships contains a large amount of nitrogen oxides (NO x ), sulfur oxides (SO x ), particulate matter (PM) and other harmful substances have posed a serious threat to the atmospheric environment and human health in coastal countries. [0003] Annex VI of the MARPOL Convention promulgated by the International Maritime Organization (IMO) stipulates that from January 1, 2016, ships sailing in the emission control area must use fuel oil with a sulfur content of less than 0.1wt%, or use recognized equivalent alternatives. Method for SO in ship exhaust gas x Removal treatment; International Maritime Organization (IMO) on SO in ship exhaust x a...

Claims

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Application Information

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IPC IPC(8): B01D53/92B01D53/94B01D53/60
CPCB01D53/60B01D53/92B01D53/94B01D2251/10B01D2251/108B01D2259/804
Inventor 吴泰峰黄雨星徐进安赵立国
Owner CHENGXI SHIPYARD