KR20160047948A

KR20160047948A - Wet scrubber

Info

Publication number: KR20160047948A
Application number: KR1020140144564A
Authority: KR
Inventors: 고현기; 심주현
Original assignee: 현대제철 주식회사
Priority date: 2014-10-23
Filing date: 2014-10-23
Publication date: 2016-05-03

Abstract

A wet scrubbing apparatus is disclosed. The wet scrubber according to an embodiment of the present invention includes a scrubbing tower for containing a scrubbing liquid, an exhaust gas injection unit coupled to a lower portion of the scrubbing tower to inject an exhaust gas into the scrubbing tower, and an exhaust gas passed through the scrubbing liquid, And an exhaust gas discharging portion coupled to an upper portion of the washing tower so as to be discharged.

Description

Wet cleaning apparatus {WET SCRUBBER}

The present invention relates to a wet scrubber.

The wet scrubber is an apparatus for separating and collecting fine particles in a gas to be crushed by means of a droplet, a liquid film, bubbles or the like generated by spraying a cleaning liquid or a turbulent gas. In such a wet cleaning apparatus, inertial force, diffusing force, cohesive force, and gravitational force are used. Inertia force and gravitational force increase with larger particle diameter, and diffusive force and cohesion force exhibit a larger dust collecting effect with smaller particle diameter.

A variety of apparatuses can be used for the wet cleaning apparatus by studying various methods of forming droplets, liquid films, and the like in order to effectively adhere fine particles and coagulate particles to each other in a droplet.

Typical wet scrubbing apparatuses include a method of spraying water or chemicals on top of a medium such as polling or spraying the flue gas directly using a nozzle without a medium.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2014-0102889 (2014.08.25, wet cleaning apparatus).

Embodiments of the present invention are intended to provide a wet cleaning apparatus capable of improving cleaning efficiency of an exhaust gas.

According to an aspect of the present invention, there is provided a cleaning tower including a cleaning tower that receives a cleaning liquid, an exhaust gas injection unit coupled to a lower portion of the cleaning tower to inject the exhaust gas into the cleaning tower, And a flue gas discharge portion coupled to an upper portion of the flue gas discharge pipe.

Here, the flue gas injection unit may include a micro bubble generator for microbubbing the flue gas into the cleaning tower.

The wet scrubber may further include a collecting part installed on the inner wall surface of the washing tower to collect particulate matter in the flue gas floating on the upper part of the washing liquid.

The wet type cleaning apparatus may further include a cleaning liquid pipe coupled to the cleaning tower to inject or discharge the cleaning liquid into the inside of the cleaning tower.

According to the embodiments of the present invention, since the exhaust gas can be injected from the lower part of the washing tower into the washing tower containing the washing liquid, the exhaust gas can pass through the washing liquid, thereby realizing a wet washing apparatus capable of improving the washing efficiency of the exhaust gas .

1 is a perspective view schematically showing a wet cleaning apparatus according to an embodiment of the present invention;
2 is a cross-sectional view of a wet scrubbing apparatus according to an embodiment of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, an embodiment of a wet cleaning apparatus according to the present invention will be described in detail with reference to the accompanying drawings. In the following description with reference to the accompanying drawings, the same or corresponding components are denoted by the same reference numerals, A description thereof will be omitted.

1 is a perspective view schematically showing a wet cleaning apparatus according to an embodiment of the present invention. 2 is a cross-sectional view showing a wet cleaning apparatus according to an embodiment of the present invention.

1 and 2, a wet scrubber 1000 according to an embodiment of the present invention includes a scrubbing tower 100, an exhaust gas injection unit 200, and an exhaust gas discharge unit 300, (400) and a cleaning liquid pipe (500).

The cleaning tower 100 is a portion for receiving the cleaning liquid 10 and may be a body portion forming a main appearance of the wet cleaning apparatus 1000 according to the present embodiment. In this case, the cleaning liquid 10 is a liquid that dissolves or absorbs certain components in the flue-gas in contact with the flue-gas, and may be composed of various materials including water or chemicals.

The flue gas injection unit 200 is a portion coupled to the lower portion of the cleaning tower 100 to inject the flue gas into the cleaning tower 100 and is injected into the cleaning tower 100 through the flue gas injection unit 200 The exhaust gas may be raised upward to pass through the cleaning liquid 100 inside the cleaning tower 100.

The exhaust gas discharging unit 300 is a part coupled to the upper part of the cleaning tower 100 so that the exhaust gas having passed through the cleaning liquid 10 is discharged to the outside of the cleaning tower 100. In the course of passing through the cleaning liquid 10, This removed flue-gas can be led to a subsequent process.

As described above, the wet scrubber 1000 according to the present embodiment injects the exhaust gas from the lower part of the washing tower 100 into the washing tower 100 containing the washing liquid 10 so that the exhaust gas passes through the washing liquid 10 The cleaning efficiency of the flue gas can be improved.

That is, by making the exhaust gas pass through the cleaning liquid 10 more than when the cleaning liquid 10 is sprayed to the exhaust gas, the area in which the exhaust gas contacts the cleaning liquid 10 and the contact time can be increased relatively. As a result, the specific component in the exhaust gas can be dissolved or absorbed into the cleaning liquid 10 more effectively, so that the cleaning efficiency of the exhaust gas can be improved.

In the wet scrubber 1000 according to the present embodiment, the flue gas injection unit 200 may include a micro bubble generator 210 for converting flue gas into micro bubbles 20 and injecting the flue gas into the cleaning tower 100.

In this case, the micro bubble 20 is an ultrafine bubble of 5 탆 or less (1/2000 of the size of general bubble), and generally has a characteristic of rising at a slow rate of 0.1 cm / sec in the water surface.

Therefore, if the exhaust gas is made into the micro bubble 20, the area of contact of the exhaust gas with the cleaning liquid 10 and the contact time can be further increased to further improve the cleaning efficiency of the exhaust gas.

Here, the micro bubble generator 210 can finely divide the exhaust gas particles by the shear force acting when the exhaust gas exits the orifice or the slit by using the orifice or the slit, thereby making the exhaust gas into the micro bubble 20. However, But are not limited to, various configurations for refining the exhaust gas particles.

The collecting part 400 is a part provided on the inner wall surface of the cleaning tower 100 so as to collect the particulate matter 30 in the flue gas floating on the upper part of the cleaning liquid 10 and collects and removes the particulate matter, Can be performed in various ways.

For example, in the process of passing the flue gas through the cleaning liquid 10, the particulate matter 30 in the flue gas may be separated from the flue gas and floated on top of the cleaning liquid 10. When the particulate matter 30 collides with the inner wall surface of the cleaning tower 100, the particulate matter 30 is collected by the trapping unit 400 such as a filtering net, thereby easily removing particulate matter in the exhaust gas .

The cleaning liquid pipe 500 is a portion coupled to the cleaning tower 100 to inject or discharge the cleaning liquid 10 into the cleaning tower 100 and can replace the cleaning liquid 10 contained in the cleaning tower 100 .

That is, the cleaning liquid 10 in which a specific substance is dissolved or absorbed in the process of passing the exhaust gas may increase the degree of contamination, thereby reducing the cleaning efficiency of the exhaust gas.

Therefore, it is possible to prevent deterioration of the cleaning efficiency due to contamination of the cleaning liquid 10 by changing the cleaning liquid 10 through the cleaning liquid pipe 500 from time to time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Cleaning solution
20: Micro bubble
30: Particulate matter
100: washing tower
200: Flue gas injection part
210: micro bubble generator
300: exhaust gas outlet
400: collection part
500: cleaning liquid pipe
1000: Wet scrubber

Claims

A cleaning tower for containing a cleaning liquid;
An exhaust gas injection unit coupled to a lower portion of the washing tower to inject an exhaust gas into the washing tower; And
An exhaust gas discharge unit coupled to an upper portion of the washing tower so that the exhaust gas passed through the washing liquid is discharged to the outside of the washing tower;
&Lt; / RTI >

The method according to claim 1,
The exhaust gas injection unit
And a micro bubble generator for microbubbing the flue gas into the cleaning tower.

3. The method according to claim 1 or 2,
A collecting part installed on an inner wall surface of the washing tower to collect particulate matter in the exhaust gas floating on the upper part of the washing liquid;
Further comprising:

The method of claim 3,
A cleaning liquid pipe coupled to the cleaning tower to inject or discharge the cleaning liquid into the cleaning tower;
Further comprising: