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Method and device for desulfurization of smoke discharged from ship

A desulfurization device, sea-going ship technology, applied in the direction of exhaust device, noise reduction device, separation method, etc.

Inactive Publication Date: 2014-03-26
WUHAN SAFE ENVIRONMENTAL PROJECT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009]2) At the same time, the scrubber uses a hollow fiber membrane contactor to realize the washing function, the pressure drop and resistance are large, and the addition of a booster fan will reduce the energy consumption and cost of the system operation very high
[0016]1) Under the current acceptable cost conditions, it is still difficult to meet the environmental requirements of smoke discharge and seawater discharge; according to the current limited drainage requirements, the consumption The amount of washing water and dilution water is large, and the energy consumption and cost are high; if the requirements for drainage conditions are further improved in the future, the cost will further increase
[0017]2). It is not suitable for the navigation and movement of ships. The environmental conditions and control conditions in different sea areas and different control areas are different. Sea-going ships operate in different sea areas and control areas. The environmental conditions are constantly changing, such as: sea water quality, sulfur content of different batches of fuel oil, emission restrictions in different environments, etc. The exhaust gas desulfurization system with fixed process parameters will not be practically applied Shipping ship
[0018]Obviously, if the above problems are not resolved, people's expectation of using marine resources to eliminate air pollution from ships will not be realized

Method used

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  • Method and device for desulfurization of smoke discharged from ship
  • Method and device for desulfurization of smoke discharged from ship
  • Method and device for desulfurization of smoke discharged from ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1: Such as figure 1 As shown, there is a desulfurization controller. The steps of the sea-going ship's flue gas desulfurization method in this embodiment are as follows:

[0064] a. Washing: containing SO discharged from ship engines 2 The high-temperature flue gas is cooled and then washed, and then the cleaned flue gas is discharged; the washing is washed with seawater in the scrubber; b. Transferring acidic seawater: the washing process absorbs SO 2 The acidic seawater formed is transferred from the scrubber to the water-saving deacidification device; c. Deacidification treatment: the acidic seawater entering the water-saving deacidification device is mixed with alkaline seawater to make it mixed seawater, and the mixed seawater Blowing in air; d. Drainage: Discharging the suitable drainable seawater that has been deacidified to the sea; washing with seawater in the scrubber in the washing step is carried out in a scrubber with a filler washing layer;

[0065] In...

Embodiment 2

[0069] Example 2: Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the scrubber 3 has a parallel bypass exhaust pipe, that is, the marine engine 1 and the scrubber exhaust pipe 4 have a direct communication exhaust pipe, which is convenient for switching the scrubber 3. Desulfurization control is manual control.

[0070] The ship used in this embodiment has a large tonnage, is equipped with a 60MW diesel engine, emits smoke at a temperature of 200 to 430 ℃, and emits smoke about 310,100Nm 3 / h; Implementing the desulfurization method of the present invention, under the condition of 3% fuel sulfur content, the sulfur dioxide emission reduction to the desulfurization equivalent fuel sulfur content meets 1.5% of the SECA control standard (2005), and the pH of the drainage is ≥6.5. The sea water consumption in the sea area is:

[0071] Baltic Sea Washing water volume 980m 3 / h Blended seawater volume 3600m 3 / h

[0072] Pacific Ocean Washing ...

Embodiment 3

[0075] Such as figure 1 , image 3 Shown is a sea-going ship flue gas desulfurization device used in the method of the present invention. The intake pipe 3.1 of the scrubber 3 introduces high-temperature flue gas 3.2 from the lower part of the scrubber 3, which is suitable for the implementation of the flue gas entering the scrubber vertically upwards occasion. A sea-going ship's flue gas desulfurization device, which has a scrubber 3, a water-saving deacidifier 10; the scrubber 3 has a scrubbing layer 3.3 on the upper part, which is connected with the scrubbing sea water pump 5 through a pipeline; the lower part is a cooling layer 3.2; One end of the scrubber 3 is connected with the exhaust pipe of the ship engine 1 through the scrubbing intake pipe 2, and the other end is connected with the scrubbing exhaust pipe 4; the lower part of the scrubber 3 is connected with the water-saving deacidifier 10; the water-saving deacidifier 10 is connected with the blended sea water pump ...

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PUM

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Abstract

A method and device for desulfurization of the smoke discharged from ship by sea water are provided. The method comprises: washing by sea water, discharging acidic sea water, deacidifying and discharging the deacidified sea water. The device includes scrubber and water-saving deacidification plant. The upside of the scrubber is the wash layer which connects to the washing sea water pump through lines. The downside of the scrubber is cooling layer. The one side of the scrubber connects to the discharging line of the ship engine through the washing gas inlet lines. The other side of the scrubber connects to the washed gas outlet lines. The bottom of the scrubber connects to the water-saving deacidification plant. The water-saving deacidification plant connects to pump for mixing sea water, blower fan and total water outlet line for discharging the deacidified sea water.

Description

technical field [0001] The invention relates to a method and device for desulfurizing smoke exhaust from sea-going ships, which uses seawater to remove pollutants such as sulfur dioxide discharged from marine ship engines, and belongs to the technical fields of atmospheric environment protection, marine resource development and utilization, and ship smoke pollution prevention and control. Background technique [0002] The problem of reducing sulfur dioxide emissions from sea-based ships has been continuously highlighted around the world, and relevant international legislation has gradually become stricter and improved. As the shipping industry that maintains the lifeline of the modern global economy, there are a large number of ships equipped with fuel engines. Relying entirely on low-sulfur fuels to reduce sulfur oxide emissions will lead to a significant increase in the economic cost of the shipping industry. Therefore, to provide ships with economical and practical emissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/92B01D53/50
CPCB01D53/1493B01D2259/4566B01D53/507B01D53/1481B01D2257/302B01D2258/012B01D53/78B01D2252/1035F01N3/04F01N13/004Y02T10/12Y02A50/20
Inventor 彭斯干
Owner WUHAN SAFE ENVIRONMENTAL PROJECT TECH INC
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