Device and method for treating ship tail gas with sea water washing

A technology for ship exhaust and seawater, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve the problems of poor treatment effect and high energy consumption, and achieve the effect of less water demand and convenient port state inspection

Inactive Publication Date: 2008-01-16
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, most of the existing scrubbers for seawater washing treatment use nozzles to directly spray water. This seawater washing treatment process has poor treatment effect and high energy consumption.

Method used

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  • Device and method for treating ship tail gas with sea water washing

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Embodiment Construction

[0012] The present invention is described in further detail below in conjunction with accompanying drawing:

[0013] As shown in Figure 1, the device of the present invention that carries out seawater washing treatment to ship tail gas mainly consists of seawater pump 1, electromagnetic flow meter 2, hollow fiber membrane contactor 3, electrostatic precipitator 4, axial flow fan 5, solid-liquid cyclone Stream separator 6, SO 2 Concentration monitor 7, PLC programmable controller 8, water quality monitor 9 and solenoid valve 10 are composed.

[0014] After being pretreated by the electrostatic precipitator 4, the exhaust gas from the ship chimney is sent to the fiber tube of the hollow fiber membrane contactor 3, that is, the scrubber, through the axial flow fan 5. In the scrubber, the exhaust gas from the ship is scrubbed by seawater. The seawater used for washing ship exhaust is pumped into the scrubber after being metered by the electromagnetic flowmeter 2 by a special sea...

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Abstract

The invention is a device and the method conducting seawater washing treatment to the ship exhaust gas which belongs to the ship exhaust gas treatment technical field. The ship exhaust gas after the dust-removing pretreatment is treated by seawater washing in a hollow fiber membrane contactor which serves as a syringe, a control system comprising an SO2 density monitor, a water quality monitor and a PLC programmable controller conducts real-time detection and storage to the SO2 density and waste water quality in the ship exhaust gas after treatment, as well as the control to the water discharging. The invention has beneficial effects that: water requirement is little by adopting the hollow fiber membrane contactor as the syringe, and the oxysulfide and particle substances in the ship exhaust gas can be effectively eliminated; and real-time monitoring, collection and storage of treatment effects of the ship exhaust gas and the seawater by adopting the PLC programmable controller facilitate the inspections of port states.

Description

technical field [0001] The invention relates to the technical field of ship tail gas treatment, in particular to a device and method for washing ship tail gas with seawater. Background technique [0002] Most of the existing ocean-going ships use heavy fuel oil as fuel, and its combustion products, namely ship exhaust, contain a large amount of harmful gases, such as carbon dioxide, nitrogen oxides, sulfur oxides, etc. If these harmful gases are not treated, they will be directly Emissions will pollute the atmosphere and cause many harms to the natural environment. In order to effectively reduce the pollution caused by ship exhaust to the atmosphere, the International Maritime Organization (IMO) has formulated Annex VI of the MARPOL Convention, which regulates the emissions of nitrogen oxides and sulfur oxides in ship exhaust. [0003] There are many existing technologies for treating ship exhaust. Among them, the treatment technologies of nitrogen oxides mainly include com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78
Inventor 宋永欣尹峰池华方
Owner DALIAN MARITIME UNIVERSITY
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