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Integral purification device for ship tail gas, and application thereof

A purification device and ship exhaust technology, which is applied in the direction of gas treatment, air quality improvement, chemical instruments and methods, etc., can solve the problems such as the application of supergravity devices, and achieve the advantages of reducing floor space, enhancing mass transfer, and large processing capacity Effect

Active Publication Date: 2019-02-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of the working conditions of the ship, there is no suitable super-gravity device that can be directly applied to the ship

Method used

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  • Integral purification device for ship tail gas, and application thereof
  • Integral purification device for ship tail gas, and application thereof
  • Integral purification device for ship tail gas, and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like Figure 8 As shown, in the process of ship fuel oil exhaust, the device with the first structure is used to remove SO in the exhaust 2 , NO and PMs, the mesh rotor combination is sparse-sparse-sparse, remove the foam screen, the mesh rotor mesh combination is 28-30-30, and no spin spoiler is placed. The liquid phase oxidant is sodium chlorite, the pH is adjusted to be 8, the absorbent is urea, and the mass fraction is 10wt%; the gas volume is 60m 3 / h, the liquid volume is 200L / h, the speed is 1000-2000r / min; the SO in the imported gas 2 The content of NO is 1200ppm, the content of NO is 1000ppm, and the content of PMs is 500 mg / m 3 ; The reaction temperature is normal temperature.

[0060] After testing, the method of the present invention, SO 2 The absorption efficiency is about 88%, the NO absorption efficiency is about 57%, the PMs absorption efficiency is about 85%, and mist is detected at the outlet. The invention has better desulfurization, denitrificat...

Embodiment 2

[0062] like Figure 8 As shown, in the process of ship fuel oil exhaust, the device with the first structure is used to remove SO in the exhaust 2 , NO and PMs, the combination of the screen rotor is sparse-sparse-sparse, and the demister screen is placed, and the combination of the demister screen is pro-pro-pro, and the mesh number combination of the screen rotor and the demister screen is 28 -30-30 without placing spin spoilers. The liquid phase oxidant is sodium chlorite, the pH is adjusted to be 8, the absorbent is urea, and the mass fraction is 10wt%; the gas volume is 60m 3 / h, the liquid volume is 200L / h, the speed is 1000-2000r / min; the SO in the imported gas 2 The content of NO is 1200 ppm, the content of NO is 1000 ppm, and the content of PMs is 500 mg / m 3 ; The reaction temperature is normal temperature.

[0063] After testing, the method of the present invention, SO 2 The absorption efficiency is about 90%, the NO absorption efficiency is about 60%, the PMs a...

Embodiment 3

[0065] like Figure 8 As shown, in the process of marine fuel oil exhaust, the device with the first structure is used to remove SO in the exhaust2 , NO and PMs, the combination of the screen rotor is sparse-sparse-sparse, and the demister screen is placed, and the combination of the demister screen is pro-pro-pro, and the mesh number combination of the screen rotor and the demister screen is 28 -30-30, placed figure 2 The spin spoiler shown. The liquid phase oxidant is sodium chlorite, the pH is adjusted to be 8, the absorbent is urea, and the mass fraction is 10wt%; the gas volume is 60m 3 / h, the liquid volume is 200L / h, the speed is 1000-2000r / min; the SO in the imported gas 2 The content of NO is 1000-1200ppm, the content of NO is 500-1000ppm, and the content of PMs is 500mg / m 3 ; The reaction temperature is normal temperature.

[0066] After testing, the method of the present invention, SO 2 The absorption efficiency is about 93%, the NO absorption efficiency is ab...

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Abstract

The invention discloses an integral purification device for ship tail gas. The integral purification device for the ship tail gas comprises a motor and a purification device shell, wherein the purification device shell comprises a sprinkling device, a rotary silk screen liquid atomization and dispersion device and a rotary demister. In the device, the sprinkling device can be applied to a pipelineto sprinkle liquid phase oxidizing agent, the degree of oxidation of nitric oxide is improved in the pipeline, and land occupation is reduced so as to bring convenience in being subsequently adsorbedby absorbent in the rotary silk screen liquid atomization and dispersion device; in the rotary silk screen liquid atomization and dispersion device, gas flows along an axial direction, centrifugal resistance does not need to be overcome, and gaseous phase resistance is reduced; liquid is sprayed out from a liquid distributor to collide with a rotary silk screen, then, the liquid is cut into smalldrops by the multilayer silk screen to be evenly distributed in a fog shape, the cross flow contact area of the gaseous phase and the liquid phase is increased, and the mass transfer of the gaseous phase and the liquid phase is reinforced. The rotary demister utilizes the silk screen which rotates at a high speed to keep the surface of the demisting silk screen to be updated, gas-liquid separation is realized, and entrainment and the waste of absorbent are avoided.

Description

technical field [0001] The invention belongs to the field of ship tail gas absorption, and relates to a ship tail gas integrated purification device and its application. Background technique [0002] Due to the advantages of safe, cheap and large cargo capacity, the shipbuilding industry has developed rapidly with the development of the global economy. Nitrogen oxides, sulfur oxides and particulate matter emitted by marine diesel engines are also increasingly harmful to humans and the environment. In order to cope with the serious situation of air pollution, effectively control ship exhaust pollution, and reduce the emission of air pollutants from ships, relevant ship air pollutant control policies and standards have been formulated in recent years, such as: IMO stipulates the maximum NOx emission of marine diesel engines It is divided into three levels, Tier I (effective in 2000) NOx<9.8g / kW h, Tier II (effective in 2011) NOx<7.7g / kW h, Tier III (effective in 2016) N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/60B01D47/06
CPCB01D47/06B01D53/60B01D53/78B01D2258/01Y02A50/20
Inventor 初广文刘志浩罗勇蔡勇孙宝昌邹海魁陈建峰
Owner BEIJING UNIV OF CHEM TECH
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