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Ship tail gas integrated purification device and its application

A purification device and a technology for ship exhaust gas, which is applied in the directions of gas treatment, air quality improvement, chemical instruments and methods, etc., and can solve problems such as the application of supergravity devices

Active Publication Date: 2021-02-19
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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  • Ship tail gas integrated purification device and its application
  • Ship tail gas integrated purification device and its application
  • Ship tail gas integrated purification device and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as 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 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, denitri...

Embodiment 2

[0062] Such as 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 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 ...

Embodiment 3

[0065] Such as 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 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 a...

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Abstract

The invention discloses an integrated purification device for ship tail gas, which includes a motor and a housing of the purification device; the housing of the purification device includes a spray device, a rotating wire mesh liquid atomization dispersion device and a rotary demister; in the device, the spray The shower device can be applied in the pipeline to spray the liquid phase oxidant, increase the oxidation degree of nitrogen oxides in the pipeline, reduce the floor space, and facilitate subsequent absorption by the absorbent in the rotary screen liquid atomization dispersion device; In the rotating screen liquid atomization dispersion device, the gas flows in the axial direction without overcoming the centrifugal resistance, which reduces the gas phase resistance; the liquid is ejected from the liquid distributor, collides with the rotating screen, and is cut into The small droplets are evenly distributed in the form of mist, which increases the contact area of ​​the gas-liquid two-phase cross-flow and strengthens the mass transfer of the gas-liquid two-phase. The rotary demister uses a high-speed rotating wire mesh to keep the surface of the demister mesh updated, realize gas-liquid separation, and avoid mist entrainment and waste of absorbent.

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 Patents(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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