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A dual-circuit washing and desulfurization device for ship exhaust gas combined with seawater and fresh water

A desulfurization device and double-loop technology, applied to the separation of dispersed particles, chemical instruments and methods, and the use of liquid separation agents, etc., can solve problems that affect the uniform distribution of exhaust gas, are not conducive to exhaust gas desulfurization, and the structure of the scrubber is complicated, so as to achieve environmental protection and energy saving Effects of detergent usage, increased operational stability, and reduced fresh water consumption

Active Publication Date: 2016-07-06
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

The structure of the washing tower is complicated, and there are many external connecting pipelines, which are difficult to install and increase the difficulty of construction
At the same time, the overly complex scrubber structure affects the uniform distribution of exhaust gas, which is not conducive to exhaust gas desulfurization

Method used

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  • A dual-circuit washing and desulfurization device for ship exhaust gas combined with seawater and fresh water

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Embodiment Construction

[0024] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.

[0025] combine figure 1 , the present invention includes seawater absorption liquid spray area I, fresh water alkaline absorption liquid spray area II, demister area III, demister cleaning pipeline IV, fresh water alkaline absorption liquid circuit V, seawater absorption liquid circuit VI, waste gas Inlet 1, liquid collection tank 2, liquid collection tank 5, seawater absorption liquid spray device 3, waste gas cover 4, packing 6, fresh water alkaline absorption liquid spray device 7, demister cleaning device 8, 10, demister 9. Exhaust gas outlet 11, water pump 12, 14, 20, 23, 25, 31, one-way valve 17, 19, 22, 28, 30, fresh water tank 13, three-way valve 16, 27, monitoring unit 15, 26, fresh water Supply unit 21 , alkaline additive supply unit 24 , seawater supply unit 32 , washing fresh water treatment unit 18 , and washing seawater treatment uni...

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Abstract

The invention provides a ship waste gas double-loop washing and desulfurization device combining seawater and fresh water. A washing tower spraying loop is divided into a fresh water alkaline absorption liquid loop and a seawater absorption liquid loop, which are used for sequentially washing and desulfurizing waste gas of a ship powder device, and treating washed waste liquid respectively; a pipeline part of the device comprises a demister washing pipeline, the fresh water alkaline absorption liquid loop and the seawater absorption liquid loop; a washing tower is connected with a pipeline and is correspondingly divided into three parts from top to bottom: a demisting region, a fresh water alkaline absorption liquid spraying region and a seawater absorption liquid spraying region; and the ship waste gas goes upstream and passes through the three spraying regions, so that SOx and particulate matters in the waste gas are effectively removed. The ship waste gas double-loop washing and desulfurization device has the advantages of compact structure and simplicity in operation; the desulfurization efficiency can be effectively improved and fresh waste resources are saved; the operation stability is increased and the environment is protected and the energy is saved; and the dosage of a chemical additive is reduced.

Description

technical field [0001] The invention relates to a device for controlling discharge of exhaust gas pollutants from ships, in particular to a device for washing and removing Sox from the exhaust gas of a ship's power plant to meet the regulations of the International Maritime Organization (IMO) on the discharge of exhaust gas pollutants from ships. Background technique [0002] With the development of the international shipping industry, exhaust emissions from ships have become the main source of air pollution in coastal areas, especially in ports. Among the gaseous emissions produced by ship power plants burning low-quality high-sulfur heavy oil, SOx occupies a large proportion, and it is easy to combine with water in the air to form acid rain, acid mist and chemical smog, which is the main cause of air pollution. one of gas. [0003] In 2008, the Marine Environment Protection Committee (MEPC) of the International Maritime Organization restricted the sulfur content of fuel o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50B01D47/12
Inventor 周松刘佃涛杨军张贺付朱元清
Owner HARBIN ENG UNIV
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