KR101857216B1 - Exhaust Gas Treatment System - Google Patents

Abstract

An exhaust gas treatment system according to one embodiment of the present invention comprises: an exhaust gas treatment apparatus to which exhaust gas generated due to combustion is introduced, injecting a cleaning liquid to the exhaust gas, and removing harmful materials within the exhaust gas; a transfer pipe for transferring the exhaust gas from a combustion apparatus generating the exhaust gas by combustion to the exhaust gas treatment apparatus; a blowing portion for triggering movement of the air; and an air supply portion including a ventilation portion for discharging the exhaust gas remaining within the exhaust gas treatment apparatus by supplying the air moved by the blowing portion to the exhaust gas treatment apparatus when the exhaust gas treatment apparatus is not operating.

Description

Exhaust Gas Treatment System [0002]

The present invention relates to an exhaust gas treatment system, and more particularly, to an exhaust gas treatment system for injecting exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas to remove harmful substances in the exhaust gas, A transfer pipe for transferring the exhaust gas from the combustion device for generating exhaust gas to the exhaust gas processing device; a blowing portion for causing a flow of air; and a blowing portion for blowing air to the blowing portion And an air supply unit including an air supply unit that supplies air generated by the air flow so as to discharge the remaining exhaust gas. The air supply unit forcibly discharges the remaining exhaust gas at the expense of the exhaust gas treatment apparatus and prevents corrosion due to moisture or the like The exhaust gas processing system comprising:

Most modern ships are equipped with engines and boilers for their own power and heating. In order to drive the engine and the boiler, fuel must be burned. The exhaust gas generated in the combustion process includes harmful substances such as SOx, NOx, PM (Particular Matter, Particulate Material) have.

Sulfur oxides and nitrogen oxides can cause respiratory illness by acting on the mucous membranes of the human body, and they are pollutants designated by the International Agency for Research on Cancer (WHO) as a primary carcinogen. When the SOx and NOx are released into the air as they are, they react with water (H ₂ O) in the atmosphere and become sulfuric acid (H ₂ SO ₄ ) and nitric acid (HNO ₃ ), respectively.

PM is a form of small particles compared to gaseous pollutants. PM is emitted into the atmosphere as it is, and it can cause visibility disorder that reduces visibility, or fine particles can enter the human body through the lungs or respiratory tract and cause various diseases . In recent years, fine dust that is a problem in Korea is also caused by PM, which is considered to be the main cause of air pollution.

Therefore, the International Maritime Organization (IMO) has set up an Emission Control Area (ECA) to limit the emission of hazardous substances in the sea area. In particular, the SOx Emission Control Area (SECA) has been stricter than the ECA, which regulates other harmful substances such as NOx.

Furthermore, from January 1, 2015, the regulations were further strengthened to limit sulfur content in the fuel to 0.1% (IMO 184 (59)), which causes environmental pollution for all ships passing through the SECA. The SECA was extended to North America from the Baltic and North Sea regions through the amendment of the Convention on Marine Pollution Prevention in August 2011 and will be extended from April 1, Sulfate management is likely to become more important.

In addition to the ECA, legislation to regulate the SOx content in the exhaust gas to 3.5% or less in the waters around the world is scheduled to be implemented by 2020 from 0.5% at the IMO General Assembly held on October 28, 2016, The need for sulfuric acid management is growing even more.

In order to comply with such international regulations, a scrubber is used to reduce sulfur oxides in the exhaust gas. It is economically advantageous to perform the exhaust gas treatment process using a scrubber to satisfy the above-mentioned regulations even with a low-cost fuel having a relatively high sulfur content and to prevent environmental pollution. The scrubber ionizes SOx with the cleaning liquid. It neutralizes ionized sulfur oxides by using sea water around pH 8.3 or fresh water containing alkaline additives as a cleaning liquid. In addition, the particulate matter may be agglomerated and discharged together with the cleaning liquid to prevent the release of the particulate matter into the atmosphere.

The operation of the scrubber is not always performed and the operation of the scrubber may be interrupted due to the operating condition of the combustion device such as an engine or a boiler or the necessity of maintenance of the scrubber itself. If exhaust gas, moisture, etc. remain in the scrubber when the operation of the scrubber is interrupted, corrosion of the interrupting device such as a scrubber or a damper valve may proceed. In order to prevent such corrosion, it is necessary to forcefully vent the remaining exhaust gas inside the scrubber and dry the moisture. Conventionally, however, effective techniques for forced ventilation of residual exhaust gas inside the scrubber and drying of water have not been available.

US Patent No. 9,272,241 entitled " COMBINED CLEANING SYSTEM AND METHOD FOR REDUCTION OF SOX AND NOX IN EXHAUST GASES FROM A COMBUSTION ENGINE ", 2016. 03. 01. Korean Registered Patent No. 10-1461255 "Sealing Air Damper for Preventing Backflow of Exhaust Gas", Registered on Apr. 2014

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art,

SUMMARY OF THE INVENTION An object of the present invention is to provide an exhaust gas processing system that allows air to be supplied into the exhaust gas processing device at the same time as the exhaust gas processing device is being pumped to exhaust the remaining exhaust gas.

Another object of the present invention is to provide an exhaust gas treatment system having an improved corrosion prevention function through ventilation and moisture drying of the exhaust gas treatment device.

It is still another object of the present invention to provide an exhaust gas treatment apparatus that supplies air to the exhaust gas treatment apparatus at the expense of the exhaust gas treatment apparatus, There is provided an exhaust gas processing system in which ventilation and moisture drying of an exhaust gas processing apparatus are efficiently performed through an air supply unit including a ventilation unit for exhausting exhaust gas.

It is still another object of the present invention to provide an exhaust gas treating apparatus that includes a transfer pipe shutoff means for shutting off a transfer pipe for transferring exhaust gas to the exhaust gas processing apparatus at the same time as the above- And an exhaust gas treatment system efficiently guided to the exhaust gas treatment device.

It is still another object of the present invention to provide a transfer piping damper valve which is supplied with air in a state in which the transfer piping blocking means is closed and blocks the exhaust gas flow path in the transfer piping, And a transfer pipe sealing part for supplying the generated air to the transfer pipe damper valve for sealing, thereby providing an exhaust gas processing system with high efficiency of supply and utilization of air.

It is still another object of the present invention to provide an exhaust gas purifying apparatus for an internal combustion engine, comprising: a bypass pipe for bypassing the exhaust gas at the same time as the exhaust gas processing apparatus; and a bypass for blocking the bypass pipe And an exhaust gas treatment system in which the exhaust gas is bypassed efficiently by further including a pipe shutoff means.

It is a further object of the present invention to provide a bypass piping damper valve in which the bypass piping blocking means is provided in the bypass piping and receives sealing air in a closed state to shut off the exhaust gas flow path in the bypass piping And the air supply unit further includes a bypass piping sealing unit for supplying air to the transfer piping damper valve through which the air having flowed by the blowing unit is sealed, thereby providing an exhaust gas processing system having high efficiency of supply and utilization of air .

It is still another object of the present invention to provide an exhaust gas treatment apparatus for removing harmful gas remaining in a gaseous state in a cleaning liquid discharged from an exhaust gas treatment apparatus connected to the exhaust gas treatment apparatus and discharging the cleaning liquid from which gaseous harmful gas has been removed The air supply unit may further include a gas inducing unit for supplying air to the noxious gas removing unit to induce reaction with the noxious gas, Thereby minimizing the exhaust gas.

In order to achieve the above object, the present invention is implemented by the following embodiments.

According to an embodiment of the present invention, an exhaust gas treatment system of the present invention includes an exhaust gas treatment device for injecting exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas to remove harmful substances in the exhaust gas, A transfer pipe for transferring the exhaust gas from the combustion apparatus that generates exhaust gas by combustion to the exhaust gas processing apparatus; a blowing unit for causing a flow of air; and an air- And an air supply unit including a ventilation unit that supplies the exhaust gas to the exhaust gas processing apparatus so that the exhaust gas remaining in the exhaust gas processing apparatus is discharged.

According to another embodiment of the present invention, the exhaust gas treatment system of the present invention further includes a transport pipe blocking means for blocking the exhaust gas in the transport pipe from flowing into the exhaust gas treatment device simultaneously with the exhaust gas treatment device ratio And the ventilation part supplies the air to the exhaust gas treatment device in a state in which the ventilation part is blocked by the transfer pipe shutoff part.

According to another embodiment of the present invention, there is provided an exhaust gas treatment system according to the present invention, wherein the ventilation part has one end connected to the blowing part and the other end connected between the transfer pipe blocking part and the exhaust gas treatment device And a ventilation air supply pipe communicated with the section of the ventilation air supply pipe.

According to another embodiment of the present invention, in the exhaust gas treatment system of the present invention, the ventilation part further includes an air supply pipe valve for ventilation for opening and closing the flow path of the ventilation air supply pipe.

According to another embodiment of the present invention, in the exhaust gas processing system of the present invention, the transfer pipe blocking means is provided in the transfer pipe, and receives air in a closed state to block the exhaust gas flow path in the transfer pipe And is a transfer piping damper valve.

According to another embodiment of the present invention, in the exhaust gas processing system of the present invention, the air supply unit further includes a transfer pipe sealing unit for supplying air to which the flow generated by the airflow- .

According to another embodiment of the present invention, the exhaust gas treatment system of the present invention further comprises: a bypass pipe branched from the transfer pipe, for bypassing the exhaust gas in a state in which the pipe is blocked by the transfer pipe blocking means; A bypass piping blocking means for blocking the bypass piping such that the exhaust gas processing apparatus ratio is bypassed to the bypass piping at the same time while the exhaust gas processing apparatus is operated and the exhaust gas proceeds to the transfer piping And further comprising:

According to another embodiment of the present invention, in the exhaust gas processing system according to the present invention, the bypass piping blocking means is provided in the bypass piping, and when air is supplied in a closed state, And a bypass piping damper valve for closing the bypass piping damper valve.

According to another embodiment of the present invention, in the exhaust gas processing system of the present invention, the air supply unit further includes a bypass piping sealing unit for supplying the bypass piping blocking unit with the air generated by the blowing unit .

According to another embodiment of the present invention, the exhaust gas treatment system of the present invention is connected to the exhaust gas treatment device to remove noxious gas remaining in a gaseous state in the cleaning liquid discharged from the exhaust gas treatment device, Further comprising a noxious gas removing means for removing noxious gas from the noxious gas in a state where the noxious gas has been removed, And a reaction inducing unit for generating a reaction force.

According to another embodiment of the present invention, in the exhaust gas treatment system of the present invention, the reaction inducing portion includes an air supply pipe for reaction, one end of which is connected to the blowing portion and the other end is connected to the noxious gas removing means .

According to another embodiment of the present invention, in the exhaust gas treatment system of the present invention, the reaction induction unit further includes a reaction air supply pipe valve for opening and closing the flow path of the reaction air supply pipe.

The present invention can obtain the following effects by the above-described embodiment, the constitution described below, the combination, and the use relationship.

The present invention provides an exhaust gas processing system that allows air to be supplied into the exhaust gas processing device at the same time as the exhaust gas processing device is being used to exhaust the remaining exhaust gas.

The present invention has an effect of providing an exhaust gas treatment system having an improved corrosion prevention function through ventilation and moisture drying of the above exhaust gas treatment device.

The present invention is a method for controlling an exhaust gas treatment apparatus that supplies exhaust gas to the exhaust gas treatment apparatus at the expense of the exhaust gas treatment apparatus, And the air is supplied to the exhaust gas processing device through the air supply part including the ventilation part for efficiently performing the ventilation and moisture drying of the exhaust gas processing device.

The present invention is characterized in that it includes a transfer pipe blocking means for blocking the transfer pipe for transferring the exhaust gas to the exhaust gas processing apparatus at the same time as the above-mentioned exhaust gas processing apparatus, so that the air supplied by the above- The present invention provides an exhaust gas treating system which is efficiently guided to the exhaust gas treating system.

The present invention is characterized in that it comprises a transfer pipe damper valve which receives air in the closed state of the transfer pipe blocking means and blocks the exhaust gas flow path in the transfer pipe, And a transfer pipe sealing part for supplying a sealing gas for sealing the piping damper valve, thereby providing an exhaust gas treatment system with high efficiency of supply and utilization of air.

The present invention is characterized by further comprising a bypass pipe for bypassing the exhaust gas in the exhaust gas processing apparatus and a bypass pipe blocking means for blocking the bypass pipe so that the exhaust gas flows to the transfer pipe when the exhaust gas processing apparatus is operated And an exhaust gas treatment system in which detouring of the exhaust gas is efficiently performed.

The present invention is characterized in that the bypass piping blocking means comprises a bypass piping damper valve provided in the bypass piping and receiving sealing air in a closed state to shut off the exhaust gas flow path in the bypass piping, And a bypass piping sealing part for supplying air to the conveying pipe damper valve, the air having flowed by the blowing part, for sealing the conveying pipe damper valve, thereby providing an exhaust gas processing system with high efficiency of supply and utilization of air.

The present invention is characterized by further comprising a noxious gas removing means connected to the exhaust gas treating apparatus to remove noxious gas remaining in the cleaning liquid discharged from the exhaust gas treating apparatus and discharging the cleaning liquid from which gaseous noxious gas has been removed And the air supply unit further includes a reaction inducing unit that induces a reaction of the air generated by the airflow with the noxious gas by supplying air to the noxious gas removing unit, System.

1 is a schematic diagram of an exhaust gas processing system according to an embodiment of the present invention
2 is a perspective view of an embodiment of a transfer pipe damper valve included in the exhaust gas treatment system of the present invention.
FIG. 3 is a view showing the operation of the exhaust gas treating apparatus during operation of the exhaust gas treating system according to the embodiment of the present invention
4 is a view showing a non-simultaneous operation of an exhaust gas treating apparatus in an exhaust gas treating system according to an embodiment of the present invention;
5 is a perspective view of the exhaust gas processing apparatus according to the first embodiment.
6 is an exploded perspective view of the exhaust gas processing apparatus according to the first embodiment.
7 is a cross-sectional view taken along the line AA '
8 is a cross-sectional view of the exhaust gas treating apparatus according to the embodiment of the present invention,
9 is an exploded perspective view of a preprocessor of the exhaust gas processing apparatus according to the first embodiment.
10 is a sectional view taken along the line a1-a1 'in section A of Fig. 9
11 is a sectional view taken along the line a2-a2 'in the section A of Fig. 9
12 is a cross-sectional view taken along the line bb '
13 is a perspective view of the stirring means of the exhaust gas processing apparatus according to the first embodiment
14 is a cross-sectional view taken along the line c1-c1 '
Fig. 15 is a cross-sectional view taken along the line c2-c2 '
16 is an exploded perspective view of a post-processor of the exhaust gas processing apparatus according to the first embodiment
17 is a cross-sectional view taken along the line d1-d1 '
FIG. 18 is a cross-sectional view taken along the line d2-d2 '
19 is a perspective view of diffusion means of an exhaust gas processing apparatus according to the first embodiment;
20 is a perspective view of a packing supporting means of the exhaust gas treating apparatus according to the first embodiment;
FIG. 21 is a cross-sectional view taken along the line BB '
22 is a sectional view taken along the line e1-e1 '
23 is a sectional view taken along the line e2-e2 'in the section E of FIG.
FIG. 24 is a cross-sectional view taken along line ff '
25 is a view showing the cleaning process in Fig. 24
Fig. 26 is a cross-sectional perspective view of gg 'section of Fig. 16
Fig. 27 is a block diagram showing a numerical cut-off process in Fig.
28 is a perspective view of an exhaust gas processing apparatus according to the second embodiment
29 is an exploded perspective view of the exhaust gas processing apparatus according to the second embodiment.
30 is a sectional view of f1-f1 '
31 is an exploded perspective view showing diffusion means of the exhaust gas processing apparatus according to the second embodiment
32 is a sectional view taken along the line aa '
Fig. 33 is a sectional view taken along the line aa 'in section A of Fig. 29 showing a state in which the ship is inclined by rolling;
34 is a sectional view taken along the line aa 'in section A of Fig. 29 showing a state in which the exhaust gas flows
35 is a perspective view showing the injection means of the exhaust gas processing apparatus according to the second embodiment.
FIG. 36 is a cross-sectional view taken along the line b1-b1 '
37 is a cross-sectional view taken along line b2-b2 'of section B of Fig. 29
38 is a conceptual view showing a state in which the spraying means of the exhaust gas treating apparatus according to the second embodiment injects the cleaning liquid
39 is a perspective view showing the distributing means of the exhaust gas processing apparatus according to the second embodiment
FIG. 40 is a cross-sectional view taken along the line c1-c1 '
FIG. 41 is a cross-sectional view taken along the line c2-c2 '
Fig. 42 is a cross-sectional view taken along the line c1-c1 'of section A, B, and C of Fig. 29,
43 is a perspective view showing the multiple injection means of the exhaust gas processing apparatus according to the second embodiment
FIG. 44 is a cross-sectional view taken along the line d1-d1 '
45 and 46 are cross-sectional views taken along the line d2-d2 '
47 is an exploded perspective view showing the first type of water separating means of the exhaust gas treating apparatus according to the second embodiment;
Fig. 48 is a sectional view taken along the line e1-e1 'in section E of Fig.
49 is a sectional view taken along the line e2-e2 'in the section E of FIG. 29
50 is a perspective view showing a state in which exhaust gas flows by the first type of water separating means of the exhaust gas treating apparatus according to the second embodiment;
51 is an exploded perspective view showing a second type of water separating means of the exhaust gas treating apparatus according to the second embodiment;
Fig. 52 is a sectional view taken along the line e1-e1 'in section E of Fig.
Fig. 53 is a sectional view taken along the line e2-e2 'in the section E of Fig.
54 is a perspective view showing a state in which the exhaust gas flows by the second type of water separating means of the exhaust gas processing apparatus according to the second embodiment
Fig. 55 is a perspective view of sections E and D of Fig.
FIG. 56 is a sectional view taken along the line e1-e1 'of the section E and D of FIG. 29
57 is a partially cutaway perspective view showing the numerical cut-off means of the exhaust gas processing apparatus according to the second embodiment
58 is a sectional view taken along the line f1-f1 'in section F of Fig. 29
59 is a diagram showing the configuration of an exhaust gas processing system according to another embodiment of the present invention

Hereinafter, an exhaust gas treatment system according to the present invention will be described in detail with reference to the accompanying drawings. Unless defined otherwise, all terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and, if conflict with the meaning of the terms used herein, It follows the definition used in the specification. Further, the detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

In the present invention, exhaust gas means a gas generated in the process of burning a fuel to drive an engine, a boiler, etc., and harmful substances in the exhaust gas include sulfur oxides (SOx), nitrogen oxides (NOx), particulate matter (PM), and the like. The exhaust gas treatment system according to the present invention is mainly intended for treating exhaust gas in a ship, but is not limited in its application to ships.

FIG. 1 shows a configuration diagram of an exhaust gas processing system according to an embodiment of the present invention. The exhaust gas treatment system of the present invention includes an exhaust gas treatment device 1, a transfer pipe 2, a transfer pipe shutoff device 3, a bypass pipe 4, a bypass pipe shutoff device 5, A harmful gas removing means 6, a blowing unit 7, and an air supplying unit 8.

The exhaust gas treatment apparatus 1 is an apparatus for removing exhaust gas from exhaust gas by injecting exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas. In the case where the present invention is applied to a ship, the harmful substance includes sulfur oxides (SOx), and the washing liquid is fresh water or seawater containing an alkali additive. The exhaust gas treating apparatus 1 dissolves sulfur oxides (SOx) in the exhaust gas by supplying fresh water or sea water containing an alkali additive as a cleaning liquid and discharges the toxic substances to the discharge pipe (S). That is, the exhaust gas treatment apparatus 1 includes an open mode or an alkaline additive that discharges the cleaning liquid, which is pumped by the cleaning agent supply unit (not shown), into the cleaning liquid, The fresh water may be supplied to the washing liquid and then the discharged washing liquid may be recirculated to operate in a close mode. The exhaust gas treating apparatus 1 will be described below with reference to the first embodiment 1a and the second embodiment 1b.

The transfer pipe 2 is a portion for transferring the exhaust gas from the combustion device C that generates exhaust gas by combustion to the exhaust gas processing device 1. [ The combustion device C may be a main engine of a ship, a sub engine, a boiler, or the like. 1, the transfer pipe 2 connects the combustion apparatus C and the exhaust gas processing apparatus 1 so that the exhaust gas generated in the combustion apparatus C is supplied to the exhaust gas processing apparatus 1).

The transfer pipe shutoff means 3 is a portion that blocks the exhaust gas in the transfer pipe 2 from flowing into the exhaust gas treatment device 1 simultaneously with the ratio of the exhaust gas treatment device 1. The transfer pipe shutoff means 3 may be a valve for shutting off the exhaust gas flow path in the transfer pipe 2.

Specifically, the transfer pipe shutoff means 3 may be a damper valve which is a hermetically closed valve for shutting off a medium such as air, a process gas or the like. The airtightness of the damper valve can be secured in various ways. A sealing air damper may be used which forms a disc of the damper valve and secures airtightness through sealing air supplied between the blades spaced apart. That is, the transfer pipe shutoff means 3 is a transfer pipe damper valve installed in the transfer pipe 2 and receiving air in a closed state to shut off the exhaust gas flow path in the transfer pipe 2 .

2 shows a perspective view of an embodiment of the transfer pipe blocking means 3 included in the exhaust gas treatment system of the present invention. Referring to FIG. 1, the transfer pipe shutoff means 3 includes a transfer pipe damper valve, and may include a valve casing 31, a valve disc 32, and an actuator 33.

The valve casing 31 is provided in the transfer pipe 2 and communicates with the exhaust gas channel of the transfer pipe 2 to form a flow path for allowing exhaust gas to flow therethrough and sealing air for securing the airtightness And a sealing air inlet 311 which is a passage through which air is introduced.

The valve disc 32 has a structure in which two blades 32a and 32b are spaced apart from each other. Each of the blades 32a and 32b has a shape corresponding to the flow path formed by the valve casing 31 so as to close the flow path formed by the valve casing 31. [ According to the valve disc 32 having such a structure, when the flow path is closed by the valve disc 32, a space S is formed between the two blades 32a and 32b, When the air is introduced through the air inlet 311, a hermetic structure is formed for blocking the exhaust gas or preventing backflow of the exhaust gas. At this time, the supply pressure of the air should be higher than the pressure of the exhaust gas in the transfer pipe 2, and air forms an air barrier as sealing air so that the valve disc 32 and the valve casing 31 Thereby securing airtightness in the gap between the inner walls.

The actuator 33 receives and supplies high-pressure fluid or electricity to rotate the valve disc 32 to intercept the flow path provided in the valve casing 31. The valve disc 32 and the actuator 33 may be connected by a drive shaft and the drive of the valve disc 32 through the actuator 33 is a technique widely used in the technical field of the present invention, A detailed description of the operation structure and principle of the second embodiment 33 will be omitted.

The bypass pipe 4 is a pipe branched from the transfer pipe 2 and bypassing the exhaust gas in a state where the pipe is shut off by the transfer pipe blocking means 3. Referring to FIG. 1, the bypass pipe 4 is branched from the branch pipe P of the transfer pipe 2 and is connected to the exhaust unit EXHAUST STACK. Exhaust gas discharged from the exhaust gas processing apparatus 1 is discharged through an exhaust pipe (EXHAUST STACK) through the bypass pipe (4).

The bypass pipe shutoff means 5 allows the exhaust gas to be bypassed to the bypass pipe 4 at the same time when the exhaust gas treatment apparatus 1 is in a rabbit state, And blocks the bypass pipe (4) to proceed to the transfer pipe (2). The bypass piping blocking means 6 may be a valve for blocking the exhaust gas flow path in the bypass piping 4.

The bypass piping blocking means 5 may be a sealing air damper that forms a disk of the damper valve and secures airtightness through sealing air supplied between spaced blades. Specifically, the bypass piping cutoff means 5 is a damper valve having the same configuration as that of the feed piping cutoff means 3 as shown in FIG. 2, and is provided in the bypass piping 4, And a bypass piping damper valve for blocking the exhaust gas flow path in the bypass piping (4).

The harmful gas removing means (6) is connected to the exhaust gas treating apparatus (1) to remove noxious gas remaining in a gaseous state in the cleaning liquid discharged from the exhaust gas treating apparatus (1) And discharging the removed cleaning liquid. The noxious gas removing means 6 may be a tube type conduit whose one end is communicated with the rinsing liquid discharge portion of the exhaust gas treating apparatus 1 and the other end is formed with a discharge portion. The cleaning liquid discharged from the exhaust gas treating apparatus 1 is temporarily stored, and the removal of the harmful gas is performed during the storage time.

Specifically, the noxious gas removing means 6 is arranged such that the one end thereof is located at the upper side, so that the introduced rinsing liquid flows downward to perform an oxidation reaction and discharge of noxious gas. The rinsing liquid has a falling flow rate of 0.45 m / sec And a retention time of 4.5 sec.

In the cleaning liquid discharged from the exhaust gas treatment device 1, noxious gas in the exhaust gas, that is, sulfur oxides (SOx) is mostly dissolved and is contained in a state in which the toxicity is lost, but a part thereof remains in a gas state and is trapped in the cleaning liquid It is also said. If such gaseous noxious gas is directly contained in the cleaning liquid and discharged to the outside, it is necessary to remove it because it causes environmental pollution. The harmful gas removing means (6) removes the gaseous harmful gas contained in the cleaning liquid discharged from the exhaust gas treating apparatus (1).

The cleaning liquid discharged from the harmful gas removing means 6 may be introduced into the cleaning liquid tank T and reused as shown in FIG. Alternatively, it may be discharged to the outside. Generally, in the closed mode, the discharged cleaning liquid is introduced into the cleaning liquid tank T and reused, and in the open mode, the liquid is discharged to the outside.

The airflow 7 is a part that causes air to flow. The airflow 7 causes a flow of air in the direction of the air supply unit 8 to be described later. The power supply unit 7 may include a fan 71, a check valve 72, and a connection port 73.

The fan 71 is a device that generates a fluid force on the air. The fan 71 may include a casing for guiding a wing car and a flow for forming a fluid flow. Referring to FIG. 1, the blowing unit 7 includes two fans 71 in parallel. This is to stably generate the flow of air. One of the two fans 71 is connected to the other fan Redundancy, that is, a preliminary configuration. Of course, three or more fans 71 may be included in parallel.

The check valve 72 serves to check the flow pressure of the air. The output of the fan 71 can be adjusted by feedback of the measurement result of the check valve 72.

The connection port 73 is a portion to which piping requiring the supply of air generated by the fan 71 is connected. At least one pipe may be connected to the connection port 73. Air generated by the fan 71 may be distributed to at least one pipe connected to the connection port 73. [

The air supply part 8 is a part for supplying air generated by the airflow 7. The air supply part 8 may include a ventilation part 81, a transfer pipe sealing part 82, a bypass pipe sealing part 83 and a reaction induction part 84.

The ventilation part 81 supplies air to the exhaust gas treatment device 1 at the same time as the exhaust gas treatment device 1 is being driven by the airflow 7, So that the exhaust gas remaining in the exhaust gas outlet is discharged. The ventilation part 81 supplies the air to the exhaust gas treatment device 1 in a state in which the exhaust gas treatment device 1 is shut off by the transfer pipe shutoff device 3 at the same time. The air supplied through the ventilation part 81 performs ventilation and drying in the exhaust gas treatment device 1. [

As shown in FIG. 1, the ventilation part 81 may include an air supply pipe 811 for ventilation and an air supply pipe 812 for ventilation.

The ventilation air supply pipe 811 is connected at one end to the blowing unit 7 and at the other end to a section between the transfer pipe shutoff unit 3 and the exhaust gas treatment unit 1 in the transfer pipe 2 . The air in which the flow is generated by the blowing unit 7 flows through the ventilation air supply pipe 811 to the section between the transfer pipe shutoff unit 3 and the exhaust gas processing unit 1 in the transfer pipe 2 And flows into the exhaust gas processing apparatus 1 to perform forced ventilation of residual exhaust gas in the exhaust gas processing apparatus 1 and drying of moisture.

The ventilation air supply pipe valve 812 is a valve for opening and closing the ventilation air supply pipe 811. When the ventilation air supply pipe valve 812 is opened, air in which the flow is generated by the ventilation portion 7 is supplied to the exhaust gas treatment device 1 through the ventilation air supply pipe 811, The supply of air is shut off when the air supply pipe valve 812 is closed.

The transfer pipe sealing portion 82 is a portion for supplying the transfer pipe blocking means 3 with the air having flowed by the blowing portion 7. As described above, in the case where the transfer pipe sealing unit 82 is composed of a transfer pipe damper valve that receives the air in the closed state of the transfer pipe blocking means 3 and blocks the flow path in the transfer pipe 2, And the sealing air is supplied to the pipe shutoff means (3). The air supplied through the transfer pipe sealing portion 82 performs sealing of the transfer pipe blocking means 3.

As shown in FIG. 1, the transfer pipe sealing portion 82 may include an air supply pipe 821 for sealing the transfer pipe and an air supply pipe valve 822 for sealing the transfer pipe.

The transfer pipe sealing air supply pipe 821 is connected at one end to the inflow portion 7 and at the other end to a pipe connected to the transfer pipe shutoff means 3. The other end of the air supply pipe 821 for sealing the transfer pipe may be connected to the sealing air inlet 311 of the valve casing 31. The air supplied through the air supply pipe 821 for sealing the transfer pipe forms an air barrier as sealing air to secure airtightness in the gap between the valve disc 32 and the inner wall of the valve casing 31 I will. At this time, the supply pressure of the air through the air supply pipe 821 for sealing the transfer pipe may be 500 to 700 mmAq.

The transfer pipe sealing air supply pipe valve 822 is a valve that opens and closes the flow path of the transfer pipe sealing air supply pipe 821. When the air supply pipe valve 822 for sealing the transfer pipe is opened, the air generated by the airflow 7 is supplied to the transfer pipe blocking means 3 through the air supply pipe 821 for sealing the transfer pipe sealing And the supply of air is shut off when the air supply pipe valve 822 for sealing the transfer pipe is closed.

The bypass piping sealing portion 83 is a portion for supplying the bypass piping blocking means 5 with the air having flowed by the blowing portion 7. As described above, the bypass piping sealing portion 83 includes a bypass piping damper valve for shutting off the flow path in the bypass piping 4 by receiving air while the bypass piping blocking means 5 is closed The sealing air is supplied to the bypass piping blocking means 5. The air supplied through the bypass piping sealing portion 83 performs sealing of the bypass piping blocking means 5.

As shown in FIG. 1, the bypass piping sealing portion 83 may include an air supply pipe 831 for bypass piping sealing and an air supply pipe valve 832 for bypass piping sealing.

The bypass pipe sealing air supply pipe 831 is connected at one end to the inflow portion 7 and at the other end to a piping connected to the bypass piping blocking means 5. Air supplied through the bypass piping sealing air supply pipe 831 forms an air barrier as sealing air to secure the airtightness of the bypass piping cutoff means 5. [ At this time, the air supply pressure through the bypass pipe sealing air supply pipe 831 may be 500 to 700 mmAq.

The bypass pipe sealing air supply pipe valve 832 is a valve for opening and closing the flow path of the bypass pipe sealing air supply pipe 831. When the air pipe valve 832 for sealing the bypass pipe is opened, air having flowed by the blower 7 flows through the bypass pipe sealing air supply pipe 831 to the bypass pipe blocking means 5 When the bypass pipe sealing air supply pipe valve 832 is closed, the air supply is interrupted.

The reaction inducing unit 84 is a part for supplying air to the noxious gas removing unit 6 by the air generated by the airflow 7 to induce a reaction with the noxious gas. The reaction inducing unit 84 supplies air to the SOx contained in the cleaning liquid in the noxious gas removing unit 6 to induce an oxidation reaction. Thus, the harmful gas in the cleaning liquid stored in the harmful gas removing means 6 can be smoothly removed.

As shown in FIG. 1, the reaction induction unit 84 may include a reaction air supply pipe 841 and a reaction air supply pipe valve 842.

One end of the reaction air supply pipe 841 is connected to the blowing unit 7 and the other end thereof is connected to the noxious gas removing unit 6. The air supplied through the reaction air supply pipe 841 reacts with the gaseous SOx contained in the cleaning liquid as an air to induce the reaction, thereby removing the harmful gas.

The reaction air supply pipe valve 842 is a valve that opens and closes the flow path of the reaction air supply pipe 841. When the reaction air supply pipe valve 842 is opened, the air having flowed by the blowing unit 7 is supplied to the harmful gas removing unit 6 through the reaction air supply pipe 841, The supply of air is shut off when the air supply pipe valve 842 is closed.

FIG. 3 is a view illustrating a state of operation of the exhaust gas treatment system in an exhaust gas treatment system according to an embodiment of the present invention when the exhaust gas treatment system is in operation, and FIG. Fig. 5 is a view showing an operation state of the exhaust gas processing apparatus at the same time as the operation of the exhaust gas processing apparatus. Fig. The operation of the exhaust gas treatment system of the present invention will be described with reference to these drawings.

Referring to FIG. 3, the bypass piping 4 is shut off by the bypass piping blocking means 5 when the exhaust gas processing apparatus 1 is in operation. One end of the ventilation air supply pipe 811, the air supply pipe for conveying pipe sealing 821, the air supply pipe for bypass piping 831 and the reaction air supply pipe 841 are connected to the connection port 73, The air supply pipe valve 812 for ventilation and the air supply pipe valve 822 for sealing the transfer pipe are closed and the bypass pipe sealing air supply pipe valve 832 and the reaction air supply pipe valve 842 are opened When the fan 71 of the blowing unit 7 is operated in a state in which the bypass pipe sealing air supply pipe 831 and the reaction pipe 73 are connected to each other through the connection port 73, The air is supplied to the air supply pipe 841 (indicated by a thin arrow). Thus, the bypass piping 4 is shut off through the air supplied while the bypass piping cutoff means 5 is closed, and the reaction air is supplied to the harmful gas removing means 6. The exhaust gas is introduced into the exhaust gas processing apparatus 1 through the transfer pipe 2, and the exhaust gas is discharged to the discharge pipe S (indicated by a thick arrow) after the harmful substances are removed.

Next, referring to FIG. 4, at the same time of the expiration of the exhaust gas processing apparatus 1, the transfer pipe 2 is blocked by the transfer pipe shutoff means 3. The air supply pipe valve 812 for ventilation and the air supply pipe valve 822 for sealing the transfer pipe are opened and the air supply pipe valve 832 for sealing the bypass pipe and the reaction air supply pipe valve 842 are closed When the fan 71 of the air-blowing section 7 is operated in a state in which the ventilation air supply pipe 811 and the conveying pipe sealing are opened through the connection port 73, Air is supplied to the air supply pipe 821 (indicated by a thin arrow). Accordingly, the transfer pipe 2 is shut off through the air supplied in the closed state of the transfer pipe shutoff means 3, and the remaining exhaust gas from the air supplied through the ventilation air supply pipe 811 Forced ventilation, drying of water, and the like. Further, the exhaust gas is discharged through a discharge pipe (EXHAUST STACK) through the bypass pipe (4) (indicated by a thick arrow). Thus, corrosion of the exhaust gas treatment device 1, the transfer pipe blocking means 3, and the like can be prevented, and durability can be improved.

1, the exhaust gas processing system according to the embodiment of the present invention includes a fan 71 of the blowing unit 7, a check valve 72, the transfer pipe shutoff unit 3, The air supply pipe valve 812 for ventilation, the air supply pipe valve 822 for sealing the transfer pipe, the air supply pipe valve 832 for sealing the bypass pipe and the air supply pipe valve 842 for reaction, And a control unit (not shown) for controlling them. The control unit may be a computer device having a control program installed therein, and may include an input unit or an operation unit for receiving a control command from the outside. In addition, when the present invention is applied to a ship, the control unit may be integrated with a control panel for controlling other devices of the ship such as the exhaust gas processing apparatus 1. [

In the following, specific embodiments of the exhaust gas treating apparatus 1 applicable to the exhaust gas treating system of the present invention will be described as the first embodiment 1a of the exhaust gas treating apparatus 1 and the second embodiment 1b ). In addition to the embodiments of the exhaust gas treating apparatus 1 which will be described below, the exhaust gas treating apparatus 1 may be formed in various forms. In the first and second embodiments 1a and 1b, The exhaust gas treatment apparatus 1 is not limited.

5 to 8, the exhaust gas processing apparatus 1a according to the first embodiment includes a preprocessor 11, a connection unit 12, and a post-processor 13. The pre-

Referring to FIG. 8, a process of treating the exhaust gas in the exhaust gas treating apparatus 1a will be briefly described below. In FIG. 8, a bold arrow indicates a flow of gas, a dotted line indicates a spraying liquid to be sprayed, and a thin arrow indicates a spraying liquid to be discharged.

When the exhaust gas generated by the combustion is introduced through the exhaust gas inlet 1112, the pre-processor 11 primarily produces harmful substances as a pretreatment gas and discharges the exhaust gas through the pretreatment gas outlet 1113. [ The connection part (12) moves the pretreatment gas to the post-processor (13). The post-processor 13 further removes harmful substances from the pre-treatment gas introduced through the pre-treatment gas inlet 1312 and discharges the post-treatment gas through the post-treatment gas outlet 1313.

In order to remove harmful substances in the exhaust gas in the preprocessor 11, the cleaning liquid introduced into the cleaning liquid inlet 1114 of the preprocessor 11 and the harmful substances of the pretreatment gas in the post- The cleaning liquid introduced into the cleaning liquid inflow portion 1314 of the post-processor 13 to remove the cleaning liquid is used as cleaning liquid outflow portions 1115 and 1315 formed in the lower portions of the preprocessor 11 and the post- ≪ / RTI >

When the present invention is applied to a ship, the washing liquid may be fresh water mixed with seawater or an alkali additive, and the exhaust gas may be generated in a combustion process of an engine or a boiler of the ship, (SOx) and PM.

The preprocessor 11 plays a role of primarily reducing harmful substances in the exhaust gas generated by the combustion. 6 to 9, the preprocessor 11 includes a preprocessor housing 111, a first pre-processing injection unit 112, a stirring unit 113, and a second pre-processing injection unit 114 .

The preprocessor housing 111 forms a contour of the preprocessor 11 and forms a flow path of the exhaust gas inside. The preprocessor housing 111 includes an inner wall 1111, an exhaust gas inlet 1112, a pretreatment gas outlet 1113, a cleaning liquid inlet 1114, and a cleaning liquid outlet 1115. 5 to 9, in an embodiment of the present invention, the preprocessor housing 111 is formed as a cylindrical tower, and moves the introduced exhaust gas from the upper portion to the lower portion of the preprocessor housing 111, Forming a flow path through which harmful substances in the exhaust gas can be primarily removed.

The inner wall 1111 is a part forming the flow path of the exhaust gas inside the preprocessor housing 111. Referring to FIG. 6, in an embodiment of the present invention, the inner wall 1111 forms a flow path of the exhaust gas in the interior of the preprocessor housing 111 in a cylindrical shape.

The exhaust gas inlet 1112 is a portion into which the exhaust gas flows into the interior of the preprocessor housing 111. 6 to 9, the exhaust gas inlet 1112 is formed at the upper end of the preprocessor housing 111, and the exhaust gas flowing through the exhaust gas inlet 1112 flows through the exhaust gas inlet 1112, And moves downward along a cylindrical flow path formed by the inner wall 1111.

The pretreatment gas outlet 1113 is a portion through which the pretreatment gas, which is an exhaust gas from which harmful substances are primarily removed, is discharged from the pretreatment apparatus 11. 6 to 9, the pretreatment gas outlet 1113 is formed at a lower side of the pre-processor housing 111, and the pretreatment gas outlet 1113, which is discharged through the pretreatment gas outlet 1113, Processing unit 13 through the connection unit 12. The post-

The cleaning liquid inflow portion 1114 is a portion into which a cleaning liquid to be injected from the inside of the preprocessor 11 flows. 9, the cleaning liquid inflow portion 1114 is connected to or formed respectively with the first pre-treatment injection means 112 and the second pre-treatment injection means 114, which will be described later.

The cleaning liquid outlet 1115 is connected to the first pre-treatment injection unit 112 and the second pre-treatment unit 112 to remove harmful substances from the exhaust gas flowing into the interior of the preprocessor housing 111 through the exhaust gas inlet 1112. [ 2 is a portion where the cleaning liquid injected by the pre-treatment injection means 114 is discharged. 6 to 9, the rinse solution outlet 1115 is formed at the lower end of the pre-processor housing 111. The rinse solution outlet 1115 is connected to the first pre-treatment injection means 112 and / The cleaning liquid injected by the second pre-treatment injection means 114 collects the harmful substances in the exhaust gas, moves to the lower end of the pre-processor housing 111, and is discharged to the outside. In order to smoothly discharge the cleaning liquid, it is preferable that the lower end of the pretreatment processor housing 111 is converged toward the cleaning liquid outlet 1115.

The first pretreatment injection means 112 is disposed in the vicinity of the exhaust gas inflow portion 1112 in the interior of the preprocessor housing 111 and injects the cleaning liquid into the exhaust gas flowing through the exhaust gas inflow portion 1112 . As described above, fresh water mixed with seawater and an alkali additive may be used as the washing liquid.

The first pre-treatment injector 112 cools the exhaust gas flowing through the exhaust gas inlet 1112. The exhaust gas flowing through the gas inlet 1112 generally has a temperature of 250 to 350 ° C. The temperature of the exhaust gas flowing through the gas inlet 1112 is reduced to 50 to 50 ° C. by the cleaning liquid injected by the first pre- And the volume is reduced.

In addition, the first pretreatment injection means 112 allows the PM to be primarily collected by the cleaning liquid, among the harmful substances in the exhaust gas. The exhaust gas in contact with the cleaning liquid injected by the first pre-treatment injection means 112 passes through the agitating means 113, the flow path thereof changes from a straight line to a spiral shape, and a second pre-treatment injection means 114 And comes into contact with the cleaning liquid to be sprayed. Accordingly, the cleaning liquid, which is sprayed by the first pre-treatment injection means 112 and collects toxic substances, increases in size, and is moved to the lower portion of the preprocessor housing 111 by gravity.

The first pretreatment injection means 112 injects the cleaning liquid in the form of a fine droplet compared with the second pretreatment injection means 114. [ Specifically, the first pretreatment spraying means 112 may spray the cleaning liquid in the form of droplets having a particle diameter of 100 to 200 mu m. Among the harmful substances of the exhaust gas, PM has a particle diameter of about 0.1 to 0.5 탆. When the cleaning liquid is sprayed in a droplet shape having a particle diameter of 100 to 200 탆, the PM is efficiently agglomerated and aggregated in the cleaning liquid .

10 and 11, in an embodiment of the present invention, the first pretreatment injection means 112 includes a rod-shaped injection body 1121, an injection port 1122 formed at one end of the injection body 1121, And the jetting body 1121 can receive the cleaning liquid and the compressed air from the cleaning liquid supply unit (not shown) through the cleaning liquid inlet 1114. [ The injection body 1121 receives the cleaning liquid together with the compressed air and delivers the cleaning liquid to the injection port 1122. The injection port 1122 injects the cleaning liquid toward the exhaust gas.

The first pretreatment injection means 112 is disposed horizontally on a cross section perpendicular to the traveling direction of the exhaust gas on the flow path of the exhaust gas formed by the inner wall 1111 of the preprocessor housing 111, And a plurality of protruding portions are disposed on the inner wall 1111 toward the center of the flow path at predetermined angular intervals. Through this arrangement, the cleaning liquid can be efficiently sprayed to the exhaust gas flowing into the exhaust gas inlet 1112 and proceeding toward the agitating means 113.

The specific shape and arrangement of the first pre-treatment injection means 112 may vary depending on the distribution amount of the first pre-treatment injection means 112 and the overall length design of the preprocessor 11. [

The agitating means 113 is disposed between the first pretreatment injecting means 112 and the second pretreatment injecting means 114 in the interior of the pretreatment housing 111 so that the exhaust gas on the flow path is curved, Preferably a helical flow. In one embodiment of the present invention, the preprocessor housing 111 forms an exhaust gas flow path vertically downward from the top to the bottom, wherein the agitator means 113 is connected to the inlet 1112 through the exhaust gas inlet 1112 So that the flow of the exhaust gas advancing straight downward is changed into a curved shape, preferably a spiral shape.

When the flow of the exhaust gas on the flow path is changed from a straight line to a curved line by the agitating means 113, the flow path becomes long, and as a result, the cleaning liquid injected by the second pre- The contact time of the contact surface is increased. Accordingly, the rate at which the harmful substances such as PM and SOx are trapped by the cleaning liquid in the exhaust gas becomes high. Therefore, it is preferable that the agitating means 113 is disposed adjacent to the exhaust gas inflow portion 1112.

Thus, the agitation means 113 can improve the removal time of harmful substances in the exhaust gas compared to the inner space of the preprocessor housing 111, and can increase the height of the preprocessor 11 without increasing the height thereof, The efficiency of removing harmful substances in the exhaust gas can be improved even if the height is reduced. As a result, it is possible to downsize the facility.

12 and 13, the stirring means 113 includes a central body 1131, a plurality of vanes 1132 and a space portion 1133, which are arranged to cover the flow path, Processor housing 111 by a flange portion 1334 coupled to the outer side of the front wall 1132. The front wall 1111 of the pre- The stirring means 113 may be arranged to be coupled to the inner wall 1111 of the preprocessor housing 111 through welding or the like.

The body 1131 is a center portion of the stirring means 113 and the wing 1132 is radially coupled to the body 1131 at a predetermined twist angle. The space portion 1133 is a portion formed between each of the vanes 1132 to form a space through which the exhaust gas can pass without colliding with the vanes 1132.

12, in the embodiment of the present invention, the agitating means 113 includes six blades 1132 that are twisted at an angle of 30 ° along the outer surface of the body 1131 And the space 1133 is formed between each of the vanes 1132.

When the agitating means 113 is configured as described above, the flow of the exhaust gas having passed through the agitating means 113 is formed in a spiral shape, and the flow of the exhaust gas formed by the inner wall 1111 of the pre- The first pre-treatment injection means 112 and the second pre-treatment injection means 114 can be formed symmetrically with respect to the moving direction center of the flow path, So that harmful substances in the trapped exhaust gas can flow down on the inner wall 1111 of the housing 111.

If the space portion 1132 does not appear between the vanes 1132, the exhaust gas flowing through the exhaust gas inlet portion 1112 is subjected to excessive pressure loss when passing through the agitation means 113 So that the flow of the exhaust gas is not preferable.

Further, it is preferable that the stirring means 113 is fixed without rotating. This is because the exhaust gas flowing through the exhaust gas inflow portion 1112 generally has a sufficient fluid supply speed toward the pretreatment gas outflow portion 1113 and therefore it is necessary to supply a separate linear energy to the exhaust gas on the flow path There is no.

The second pretreatment injection means 114 is disposed between the agitation means 113 and the pretreatment gas outflow 1113 in the interior of the preprocessor housing 111 and through the agitating means 113, And the cleaning liquid is sprayed on the exhaust gas proceeding spirally.

The second pretreatment injection means 114 is connected to the pretreatment gas outlet 1113 located at the lower portion of the preprocessor housing 111 through the agitation means 113. The second pretreatment injection means 114 is connected to the pre- The cleaning liquid is injected by the first pre-treatment injection means 112 to induce agglomeration of the cleaning liquid in a state of collecting harmful substances such as PM contained in the exhaust gas, thereby enlarging the size of the cleaning liquid, To flow down on the inner wall 1111 of the processor housing 111 or to fall down efficiently to the lower portion of the preprocessor housing 111.

In order to increase the size of the cleaning liquid injected by the first pretreatment injection means 112 and collecting harmful substances such as PM in the exhaust gas as described above, the second pre-treatment injection means 114, It is preferable to inject a cleaning liquid having a larger particle diameter than the cleaning liquid jetted by the jetting means 112. Specifically, it is preferable that the second pre-treatment injection means 114 injects the cleaning liquid in the form of a droplet having a particle diameter of 500 to 1,000 μm.

14 and 15, in an embodiment of the present invention, the second pretreatment injection means 114 includes a rod-shaped injection body 1141 and a plurality of branched water bodies 1141 branched from the injection body 1141 at regular intervals And a plurality of ejection openings 1143 formed at predetermined intervals in each of the ejection bores 1142. [ The jetting body 1141 can receive the cleaning liquid and the compressed air from the cleaning liquid supply unit (not shown) through the cleaning liquid inlet 1114. The jetting body 1141 receives the cleaning liquid together with the compressed air and delivers the jetted liquid to each of the jetting bases 1142. The jetting port 1143 injects the cleaning liquid toward the exhaust gas.

The second pretreatment injection means 114 forms a structure in which the injection ports 1143 for injecting the cleaning liquid are disposed more closely than the first pretreatment injection means 112, This is advantageous in uniformly spraying the cleaning liquid without a square area toward the exhaust gas flowing in the flow path spirally.

The specific shape and arrangement of the second pre-treatment injection means 114 and the like can be controlled in accordance with the distribution amount of the second pre-treatment injection means 114 and the distribution amount of the pre-processor 11 And the overall length design of the device.

The connection part 12 is a part for moving the pretreatment gas, which is an exhaust gas whose harmful substances are primarily reduced, in the preprocessor 11 to the post-processor 13. [ 6 to 8, one end of the connection part 12 is connected to the pretreatment gas outlet part 1113 of the preprocessor housing 111 and the other end is connected to the pretreatment gas inlet part 1312).

The post-processor 13 additionally removes harmful substances in the pretreatment gas, which is an exhaust gas whose toxic substances are primarily reduced by the preprocessor 11. 5 to 8 and 16, the post-processor 13 includes a post-processor housing 131, a diffusion unit 132, a packing 133, a packing support unit 134, a first post- 135, the second post-treatment injection means 136, the water separating means 137, the cleaning means 138, and the irrigation blocking means 139.

The post-processor housing 131 forms a contour of the post-processor 13 and forms a flow path of the pretreatment gas therein. The post-processor housing 131 includes an inner wall 1311, a pretreatment gas inlet 1312, a post-treatment gas outlet 1313, and a rinse solution outlet 1315. 6 and 16, in an embodiment of the present invention, the post-processor housing 131 is formed as a cylindrical tower, and moves the pre-treatment gas introduced through one side of the lower portion upward, Thereby forming a flow path through which harmful substances can be additionally removed.

The inner wall 1311 is a part forming the flow path of the pretreatment gas in the post-processor housing 131. Referring to FIGS. 6 and 16, the inner wall 1311 forms a flow path of the exhaust gas in the post-processor housing 131 in a cylindrical shape.

The pre-treatment gas inlet 1312 is a portion into which the pretreatment gas flows into the post-processor housing 131. As shown in FIGS. 6 to 8 and 16, the pretreatment gas inlet 1312 is formed at a lower side of the post-processor housing 131, and the pretreatment gas introduced through the pretreatment gas inlet 1312 Is moved upward along a cylindrical flow path formed by the inner wall 1311.

The post-treatment gas outlet 1313 is a portion through which the post-treatment gas, which is a pretreatment gas from which the harmful substances are further removed, is discharged from the post-processor 13. As shown in FIGS. 6 to 8 and 16, the post-treatment gas outlet 1313 is formed in the upper portion of the post-processor housing 131, and is discharged through the post-treatment gas outlet 1313 The process gas can be released to the atmosphere as the removal of harmful substances from the exhaust gas is performed by the pre-processor (11) and the post-processor (13).

The cleaning liquid inlet 1314 is a portion into which the cleaning liquid to be injected from the inside of the post-processor 13 flows. 6 and 16, the cleaning liquid inlet 1314 is connected to the first post-treatment injection unit 135, the second post-treatment injection unit 136, and the cleaning unit 138, which will be described later, Or formed.

The cleaning liquid outlet 1315 is connected to the first post-processing injection unit 135 or the second post-processing unit 135 to remove harmful substances in the pretreatment gas introduced into the post-processor housing 131 through the pre- And is a portion where the cleaning liquid injected by the second post-treatment injection means 136 is discharged. 6 to 8 and 16, the cleaning liquid outlet 1315 is formed at the lower end of the post-processor housing 131. The cleaning liquid outlet 1315 is connected to the cleaning liquid outlet 1315 through the cleaning liquid outlet 1315, The cleaning liquid injected by the processing injection means 135 and the second post-processing injection means 136 collects the harmful substances in the pretreatment gas and is moved to the lower end of the post-processor housing 131 to be discharged to the outside do. In order to smoothly discharge the cleaning liquid, the lower end of the post-treatment housing 131 is preferably formed to converge toward the cleaning liquid outlet 1315.

The diffusing means 132 diffuses the pre-treatment gas introduced through the pre-treatment gas inlet 1312 and disposed adjacent to the pre-treatment gas inlet 1312 in the post-processor housing 131. 17 to 19, the diffusing unit 132 is disposed in front of the pretreatment gas inlet 1312 and includes a body 1321 and a fastening unit 1322. [

The body 1321 is a member that covers the front of the pretreatment gas inlet 1312 and has a diffusion portion 1321a through which the pretreatment gas can pass. The body 1321 may be formed of a plate-like member. 18 and 19, the body 1321 is formed so as to vertically cover the front of the pretreatment gas inlet 1312. The upper and lower ends of the body 1321 are connected to the pre- And may be formed in an inclined or curved shape toward the inflow portion 1312 side.

The upper end of the body 1321 is formed to be inclined upward toward the pretreatment gas inlet 1312 and the lower end of the body 1321 is inclined downward toward the pretreatment gas inlet 1312 side Respectively. Through this shape of the body 1321, the pretreatment gas introduced through the pretreatment gas inlet 1312 can be uniformly diffused forward and upward and downward. The body 1321 may be formed not only in an upper portion and a lower portion in a shape that is inclined or curved, but also in a generally curved shape.

The diffusion portion 1321a may include a plurality of through holes, and the diffusion portion 1321a may be formed with a plurality of uniformly formed through holes. However, the diffusion part 1321a is not limited to the through hole, and the diffusion part 1321a may be formed in the form of a slit or the like.

The size and shape of the body 1321 and the shape and the number of the diffusion portions 1321a may vary depending on the processing capacity of the post processor 13 and the like.

The fastening portion 1322 is a portion that is fastened to the fixing portion 1311b formed in the post-processor housing 131 so that the diffusion means 132 can be fixed inside the post-processor housing 131 . 17 and 18, the fastening portion 1322 is vertically extended or bent from the left and right ends of the body 1321 toward the pretreatment gas inlet 1312, To be fixed to the interior of the post-processor housing 131 by being fastened to the fixing portion 1311b formed in the post-processor housing 131. [

Since the flow path of the pretreatment gas, which is an exhaust gas whose reduction of harmful substances is primarily performed by the preprocessor 11, is changed by the agitating means 113 in a spiral manner, it flows out to the pretreatment gas outlet 1312 And flows into the pretreatment gas inlet 1312 via the connection portion 12, the gas has a certain amount of rotational energy. Accordingly, the flow of the air into the post-processor housing 131 is concentrated on the inner wall 1311 of the post-processor housing 131 toward the pretreatment gas inlet 1312, It is not uniformly dispersed in the flow path of the pretreatment gas formed in the reaction chamber.

The diffusing unit 132 functions as a nozzle by making the cross sectional area of the pre-treatment gas flow into the post-processor housing 131 to be narrower so that the pre-treatment gas flows into the post-processor housing 131 Thereby allowing uniform diffusion. So that the pretreatment gas can be uniformly dispersed on the flow path of the pretreatment gas formed in the post-treatment housing 131. That is, the pretreatment gas flowing into the packing 133 is uniformly dispersed through the diffusion unit 132, so that the absorption efficiency of the SOx of the pretreatment gas in the packing 133 can be increased, The efficiency can be improved.

As shown in FIGS. 17 and 18, two diffusion units 132 are disposed in front of the pre-treatment gas inlet 1312 so that the diffusion by the diffusion unit 132 can be performed more It can be made uniform.

The packing 133 is a portion for making a contact area between the cleaning liquid injected by the first post-treatment injection means 135 and the second post-treatment injection means 136 described later and the pretreatment gas large. The packing 133 is disposed on the flow path of the pretreatment gas in the upper portion of the diffusing means 132 in the post-processor housing 131 to increase the vapor / liquid contact area of the pretreatment gas and the cleaning liquid, Or the SOx which is a harmful substance in the pretreatment gas through the cleaning liquid composed of fresh water containing an alkali additive can be smoothly performed.

And a plurality of fillers of the packing 133 are gathered. The fillers may be made of steel, ceramic, plastic, or the like. In addition, the shape of the packing 133 may be a random packing in which packing materials are gathered without a certain pattern, a structured packing having a certain pattern, or the like. The type and shape of the packing 133 may vary depending on the processing capacity and length design of the post-processor 13, and the like.

The packing support means 134 supports the packing 133 from below and diffuses the pretreatment gas. 20 and 21, the packing support means 134 covers the flow path of the pretreatment gas and has a step 1311a protruding inwardly in an inner wall 1311 of the post-processor housing 131, And supports the packing 133 placed on the upper part. In the present invention, the packing support means 134 has a diffusion function for diffusing the pretreatment gas from the lower portion of the packing 133.

The packing support means 134 includes a penetration portion 134a through which the pretreatment gas can pass and a support portion 134b for supporting the packing. Specifically, the supporting portion 134a is a strand having a cross structure, and the penetrating portion 134a is formed as a through hole formed by the supporting portion 134b. That is, the packing support means 134 forms the penetration portion 134a of the mesh structure by the support portion 134b having a cross structure. The pressure loss of the pretreatment gas can be reduced by lowering the resistance through the mesh structure.

The packing support means 134 increases the ratio of the diffusion portion 134a, that is, the ratio of the through holes of the mesh structure, thereby increasing the passage area of the pretreatment gas compared to a general mesh structure to minimize the pressure loss of the pretreatment gas Specifically, it is preferable that the area of the diffusion portion 134a and the vertical projection area of the support portion 134b are formed to be about 2 to 4: 1.

Meanwhile, as shown in FIG. 20, it is preferable that at least a part of the support part 134b has a twisted structure. If the support portion 134b has such a twisted structure, the pretreatment gas impinging on the support portion 134b among the pretreatment gases passing through the penetration portion 134a is changed in the traveling direction along the twisted direction. As a result, the pretreatment gas can be diffused more widely, and more uniform and active pretreatment gas can be dispersed and diffused.

In the present invention, the packing support means 134 does not merely support the packing 133, but also distributes the pretreatment gas introduced into the packing 133 evenly over the whole area of the lower portion of the packing 133 . As a result, the absorption efficiency of the SOx of the pretreatment gas in the packing 133 can be increased through the packing support means 134, and the collection efficiency of other harmful substances can be improved.

It is preferable that the packing support means 134 has a bending structure in which the hill portions 1341 and the valleys 1342 are continuously and continuously arranged. The continuous bending structure in parallel with each other improves the supporting force with respect to the cross sectional area, so that the packing 133 can be more stably supported by the hill 1341. Further, this structure allows the pressure of the pretreatment gas traveling toward the packing 133 to be uniformly dispersed in the packing support means 134, so that the pressure of the pretreatment gas flowing toward the packing 133 from the bottom of the packing 133 Thereby making the flowing pre-treatment gas uniformly diffuse to the lower portion of the packing 133 as a whole.

The first post-processing injection unit 135 is disposed on the flow path of the pre-processing gas among the interior of the post-processor housing 131 and injects the cleaning liquid toward the pre-processing gas. The first post-treatment injection means 135 is disposed on the upper portion of the packing 133 and injects the cleaning liquid toward the packing 133.

16, 22, and 23, in an embodiment of the present invention, the first post-processing injection unit 135 includes a rod-shaped injection body 1351, And a plurality of injection ports 1353 formed at predetermined intervals in the respective injection bosses 1352. The plurality of injection bosses 1352 are connected to the respective injection bosses 1352 through the injection body 1351, (Not shown) for supplying a cleaning liquid and compressed air to the cleaning liquid supply unit. The cleaning liquid and the compressed air supplied by the cleaning liquid supply unit (not shown) are supplied to the injection body 1351 through the cleaning liquid inlet 1314. The jetting body 1351 receives the cleaning liquid together with the compressed air and delivers the jetted liquid to each of the jetting bases 1352. The jetting port 1353 injects the cleaning liquid toward the exhaust gas.

The specific shape and arrangement of the first post-processing injection means 135 may vary depending on, for example, the distribution amount of the first post-processing injection means 135 and the overall length design of the post-processor 13.

The second post-processing injection unit 136 is disposed on the flow path of the pre-processing gas among the inside of the post-processor housing 131 to inject the cleaning liquid toward the pre-processing gas, And is operable independently. This independent operation can be performed by the control of the control unit C as shown in Fig. The controller C performs control so that the injections of the cleaning liquids of the first post-processing injection unit 135 and the second post-processing injection unit 136 can be independently performed.

16, 22, and 23, in an embodiment of the present invention, the second post-processing injection means 136 includes a rod-shaped injection body 1361, And a plurality of ejection openings 1363 formed at predetermined intervals in the respective ejection bosses 1362. The plurality of ejection bosses 1362 are formed through the ejection body 1361, (Not shown) for supplying a cleaning liquid and compressed air to the cleaning liquid supply unit. The cleaning liquid and the compressed air supplied by the cleaning liquid supply means (not shown) are supplied to the injection body 1361 through the cleaning liquid inlet 1314. [ The jetting body 1361 receives the cleaning liquid together with the compressed air and delivers the cleaning liquid to each of the jetting bases 1362, and the jetting port 1363 ejects the cleaning liquid toward the exhaust gas.

The specific shape and arrangement of the second post-processing injection means 136 may be determined in accordance with the distribution amount of the second post-processing injection means 136 and the distribution amount of the second post-processing injection means 136, as described in connection with the first post- The overall length design of the processor 13, and the like.

The second post-processing injection means 136 independently operates with the first post-processing injection means 135 in that the second post-processing injection means 136 is connected to the first post-processing injection means 135, ≪ / RTI > or at the same time. Therefore, when the amount of the exhaust gas generated by the combustion and the amount of the pretreatment gas introduced from the preprocessor 11 changes according to the load of the engine, it is possible to spray the appropriate cleaning liquid correspondingly thereto, The economical operation of the processor 13 is achieved.

The second post-processing injection means 136 is disposed above the first post-processing injection means 135 at a predetermined interval. When the second post-processing injection means 136 and the first post-processing injection means 135 are disposed on the same horizontal plane of the flow path of the pretreatment gas, the resistance which interrupts the flow of the pretreatment gas becomes large, The second post-processing injection means 136 and the first post-processing injection means 135 are preferably arranged at different heights.

Further, the first post-processing injection means 135 and the second post-processing injection means 136 are disposed at different heights, and are disposed so as to cross each other when they are vertically projected on the flow path of the pretreatment gas Is more preferable. Through this arrangement, the cleaning liquid can be uniformly sprayed on the pretreatment gas on the pretreatment gas flow path without a rectangular area, and removal of toxic substances in the pretreatment gas can be performed more efficiently.

Hereinafter, the mechanism by which the harmful substances in the pretreatment gas are removed through the cleaning liquid injected by the first post-treatment injection means 135 and the second post-treatment injection means 136 will be described below.

The pretreatment gas includes harmful substances such as sulfur oxides (SOx) and PM, which are acidic substances. The first post-treatment injection means 135 and the second post-treatment injection means 136 neutralize The cleaning liquid is sprayed to coagulate and remove. In general, 0.1 ~ 0.5um of PM is first aggregated by fine droplets (100 ~ 200um) and becomes bigger. In addition, a basic cleaning solution is required to neutralize acidic sulfur oxides (SOx). When fresh water is used, a separate alkaline additive is added to induce a neutralization reaction.

At this time, the alkaline additive may be NaOH (sodium hydroxide), Na ₂ CO ₃ (sodium carbonate), or NaHCO ₃ (sodium bicarbonate). The neutralization reaction of sulfuric acid (SOx) by a cleaning liquid containing NaOH is as follows.

_{SO 2 (g) + 2NaOH (} aq) + (1/2) O 2 (g) → 2Na + + SO 4 2- + H 2 O

However, when the present invention is applied to a ship as described above, sea water, which is salt water, may be used as a cleaning liquid. In general, seawater contains salts such as sodium chloride (NaCl), magnesium chloride (MgCl ₂ ) and potassium chloride (KCl). PH is 7.8 ~ 8.3 due to the anions such as Cl ^- , SO ₄ ^2- and Br ^- And the like. Therefore, if such seawater is used as a cleaning liquid, there is an advantage that neutralization of sulfur oxides (SOx) can be performed without adding an additional alkaline additive.

At this time, the neutralization reaction formula by seawater is as follows. First, it is mixed with sulfur dioxide (SO ₂ ) in gaseous state.

SO _{2 (g)} + H ₂ O ₍₁₎ ↔ H ₂ SO _{3 (aq)}

Next, it reacts with the base in seawater.

2H ₂ SO _{3 (aq)} + OH ^- ↔ 2HSO ₃ ^- _(aq) + H ⁺ _(aq) + H ₂ O _(aq)

^{_{2HSO 3 - (aq) + OH}} - (aq) ↔ ² SO ₃ ^{2 -} _(aq) + H ⁺ _(aq) + H ₂ O _(aq)

That is, sulfur dioxide is absorbed in seawater and becomes a sulfate through the above reaction.

The odd water separating means 137 is disposed on the upper portion of the second post-processing injection means 136 among the inside of the post-processor housing 131 and is connected to the flow of the pretreatment gas via the second post- It is the part that performs the role of separating the micro liquid which flows in the path. The odd water separating means 137 is disposed in a manner such that a rim portion thereof is seated on a step 1311a protruding inwardly from the inner wall 1311 of the post processor housing 131.

The odd water separating unit 137 separates, filters and collects aerosol-type droplets or mist generated by the pretreatment gas and the cleaning liquid. The odd-numbered water separating unit 137 includes a blade May be arranged at a predetermined interval. In addition, the shape of the water separation unit 137 may vary depending on the design of the post-processor 13, temperature and chemical characteristics, and the like.

The cleaning means 138 is disposed on the upper portion of the second post-processing injection means 136 and the lower portion of the water separation means 137 among the interior of the post-processor housing 131, And a cleaning liquid is sprayed toward the cleaning liquid.

16, 24 and 25, in one embodiment of the present invention, the cleaning means 138 includes a bar-shaped injection body 1381 and a plurality of nozzles 1341 branched from the injection body 1381 at regular intervals And a plurality of ejection openings 1383 formed at predetermined intervals in each of the ejection bosses 1382. The ejection bosses 1382 are connected to the respective ejection bosses 1382 through a cleaning liquid and compressed air (Not shown) for supplying a cleaning liquid to the substrate. The cleaning liquid and the compressed air supplied by the cleaning liquid supply means (not shown) are supplied to the injection body 1381 through the cleaning liquid inlet portion 1314. The jetting body 1381 supplies the cleaning liquid together with the compressed air to each of the jetting bases 1382, and the jetting port 1383 ejects the cleaning liquid toward the jetting separating means 137.

The water separating means 136 may be contaminated or occluded during the process of separating, filtering and collecting fine droplets or mist in a state of collecting harmful substances such as PM in the pretreatment gas. The separation means 137 is cleaned by the cleaning liquid, thereby preventing contamination and clogging of the water separation means 136.

In addition, the cleaning means 138 may spray a cleaning liquid to increase the size of fine droplets or mist separated by the water separating means 137, so that droplets of fine droplets or mist that collect harmful substances become large droplets, It can efficiently fall down to the lower portion of the housing 131 or flow downward through the inner wall 1311 of the post-processor housing 131.

The numerical cutoff unit 139 is a part that functions to block the water flowed out through the inner wall 1311 of the post-processor housing 131 and flowing out to the post-process gas outlet 1313. 16, 26 and 27, the numerical blocking means 139 includes a blocking wall 1391. In addition, the water blocking means 139 forms a trapping space 1392 for trapping water in the vicinity of the after-treatment gas outlet 1313 to prevent water droplets from flowing out to the outside. The collection space 1392 is formed in such a form that the collected water drops can be dropped downward.

The post-processing gas outlet 1313 is formed on the upper portion of the post-processor housing 131 in an upward direction, and the numerical cutoff unit 139 is disposed below the post-processing gas outlet 1313 in a downward direction And includes an extended blocking wall 1391. The blocking wall 1391 forms a trapping space 1392 between upper end inner walls of the housing 131 of the post-processor. The upper end wall 1311 of the housing 131 of the post-processor is converged toward the post-process gas outlet and is formed in a sloping shape. The blocking wall 1391 effectively forms the trapping space 1392, It is preferable to extend vertically downward to efficiently block the external discharge of the enemy.

The pretreatment gas rises along the flow path of the pretreatment gas formed in the post-treatment unit 13, and is discharged as a post-treatment gas through the post-treatment gas outflow 1313 while the toxic substances are further removed. In this process, some of the number of cleaning liquids collected in the pretreatment gas is collected on the inner wall 1311 of the post-processor housing 131 and moved toward the post-processor outlet 1313.

The water droplets that have moved to the vicinity of the rim of the after-treatment gas outlet 1313 on the upper inner wall 1311 of the post-processor housing 131 are caught by the blocking wall 1391. A trapping space 1392 is formed between the blocking wall 1391 and the inner wall 1311 of the post-processor housing 131 around the post-processing gas outlet 1313 so that water droplets can cohere with each other. The number of particles in the trapping space 1392 coalesces and the size and weight of the particles accumulate in the trapping space 1392 and fall to the bottom of the post-processor housing 131.

Thus, the water blocking unit 139 prevents the water collected from the pre-treatment gas from collecting the harmful substances from being discharged to the outside through the post-processor outlet 1313, and is separated into the lower part of the post-processor housing 131 Let it fall.

Next, a second embodiment 1b of the exhaust gas processing apparatus 1 will be described.

Referring to FIG. 28, the exhaust gas from the engine or the boiler contains harmful substances such as SOx, NOx and Particulate Matter (PM), while the exhaust gas according to the second embodiment The exhaust gas treatment apparatus 1b according to the second embodiment may include a housing 171 in which a plurality of means for reducing the harmful substances are provided step by step.

29 and 30, the housing 171 may have various shapes in the form of a large barrel having an empty interior. In general, however, the housing 171 has a cylindrical housing 171, A gas inflow portion 1712 through which the exhaust gas enters and a cleaning liquid outlet portion 1715 through which the sprayed cleaning liquid escapes and a gas outlet portion 1713 through which the exhaust gas exits from the upper portion .

The inner wall surface 1711 may include a vertical surface 1711a which extends upward and downward and an inclined surface 1711b which is bent and extended from the vertical surface 1711a in the vicinity of the gas outflow portion 1713, The inner wall surface 1711 may have a function of rinsing the cleaning liquid introduced from the later-described injection means 173 or the like along the flow of the exhaust gas.

The gas inlet 1712 may include a gas inlet pipe 1712a that protrudes inward of the housing 171 and communicates with one side of a diffusion unit 172 which will be described later. Is formed as a hollow hollow cylinder having a function as a passage through which exhaust gas can flow.

The cleaning liquid outlet 1715 includes a cleaning liquid outlet pipe 1715a extending from a bottom surface of the housing 171 to a lower portion of the housing 171 by a predetermined length, In many cases, the inside is formed as a hollow hollow cylinder for discharging the cleaning liquid. In case of installing on a ship, it is possible to smoothly discharge the cleaning solution on one side according to the inclination of the ship without a separate bottom surface inclination due to a rolling phenomenon rolling the hull to the left and right and a pitching phenomenon to lean forward and backward.

The gas outflow portion 1713 is formed with a large hole in the exhaust gas treatment device 1b according to the second embodiment so that the clean gas from which harmful substances are removed is discharged to the atmosphere, And may communicate with the water cutoff means 178 to block the water droplets that rise on the inner wall surface 1711.

Next, referring to FIGS. 29 to 58, the exhaust gas flowing into the housing 171 of the exhaust gas processing apparatus 1b is cleaned in stages to remove sulfur oxides (SOx) and particulate matter (PM) I will explain various means of discharging cleaned gas.

29 and 30, the exhaust gas treatment apparatus 1b is provided with diffusion means 172 (see FIG. 29) for distributing the exhaust gas evenly inside the housing 171, A dispensing means 173 for spraying the cleaning liquid on the upper side thereof, a dispensing means 174 for spraying the exhaust gas on the upper side of the injection means 173, a multi-injection means 175), numeral separation means (176) for guiding the flow of the exhaust gas on the multiplying means (175), numeral collecting means (177) for collecting the numeral water separated from the lower portion of the numerical separating means (176) And a numerical aperture blocking means 178 for dropping the water droplets riding on the inner wall surface 1711 in the vicinity of the gas outlet portion 1713.

31 to 34, the diffusion means 172 has a function of uniformly dispersing the exhaust gas flowing in the gas inlet portion 1712 into the housing 171, A diffuser 1721 and an exhaust passage 1722 for exhausting the cleaning liquid, which is accumulated inside the gas diffuser 1721, without obstructing the flow of the exhaust gas.

31 and 32, the inside of the gas diffuser 1721 is formed into an empty thin-film-like narrow shape so that the inner surface 1721a and the outer surface 1721b and the boundary between the two surfaces 1721a and b And a blocking portion 11721d extending outwardly of the gas diffuser 1721 along the periphery of the outer side surface 1721b.

The outer side surface 1721b has a function that the exhaust gas flowing through the gas inlet portion 1712 rises and is widely dispersed inside the housing 171. [

In the prior art, gas diffusers are sometimes provided on the upper side of the gas inlet. However, the cleaning liquid having a lower narrowing width that becomes narrower toward the upper side flows down along the surface of the gas diffuser and obstructs the flow of the exhaust gas . Thereby, pressure loss of the exhaust gas is generated thereby to weaken the function of the entire exhaust gas processing apparatus. In addition, in many cases, the lower crucible has a triangular or conical shape. The exhaust gas introduced from the gas inlet part bypasses the lower side of the horn and spreads to the inside of the housing to form an upward flow. Causing a large pressure loss. Although the exhaust gas treatment apparatus is important in terms of how much pressure loss (mmAq / m) per unit height is quantified and used as an index for performance, the conventional art has a problem that the pressure loss It was a bar.

Accordingly, the gas diffuser 1721 according to the present invention includes a shape that widens toward the upper end, and the exhaust gas that has entered through the gas inlet 1712 is gradually widened along the outer surface 1721b of the gas diffuser 1721, The exhaust gas can be widely dispersed in the housing 171 without pressure loss. In particular, it is preferable that the gas diffuser 1721 in the shape of the upper limit of the light includes an inverted conical shape.

The inner side surface 1721a has a function of collecting the cleaning liquid sprayed from the spraying means 173 to be described later and collecting downwardly so as to collect downwardly. The flow of the gas is not disturbed and the pressure loss can be prevented.

The blocking portion 1721d is formed to extend outward along the periphery of the outer surface 1721b and is located below the edge 1721c. The blocking portion 1721d includes a first surface 172d-1 that is horizontally deployed, And a second surface 1721d-2.

Referring to FIG. 33, the exhaust gas treatment device 1b is used in a ship to confirm a pitching phenomenon in which a hull is tilted back and forth by a wave, and a rolling phenomenon in which a curve is tilted to the left and right . At this time, the housing 171 also tilts forward, backward, left and right. At this moment, when the gas diffuser 1721 is inclined so that the outer side surface 1721b extends beyond the vertical direction, the cleaning liquid jetted from the jetting means 173, 1712). If the cleaning liquid that has entered the gas inlet 1712 flows backward into the engine E or the boiler B, there is a possibility that a serious trouble such as a device failure occurs. Therefore, in order to prevent such a phenomenon, the blocking portion 1721d should be designed to have a size considering the size, rolling and pitching angle of the ship. More specifically, by varying the length of the first surface 1721d-1 and the length of the first surface 1721d-2, the degree of protrusion from the outer surface 1721b is adjusted so that even when the hull is tilted, And prevents backflow to the gas inlet 1712. At this time, the angle at which the outer surface 1721b is developed is preferably designed in consideration of rolling and pitching.

In addition, when the rolling and pitching occurs, the cleaning liquid accumulated in the blocking portion 1721d may be poured to the bottom of the housing 171 rather than the gas inflow portion 1712. For this, the development angle of the second surface 1721d-2 is designed in consideration of rolling and pitching.

The discharge passage 1722 has a function of discharging the cleaning liquid collected on the inner side surface 1721a of the gas diffuser 1721 to the bottom surface of the housing 171 to prevent overflow of the cleaning liquid, 1721 from the lower side to the inner side surface 1721a. At this time, the discharge passage 1722 is formed such that the gas inlet 1712 protrudes inside the housing 171 and extends to the inside of the extended gas inlet pipe 1712a. In order to discharge the cleaning liquid, the gas inlet pipe 1721a, And an outlet 1722a communicating with the inner surface of the base plate 1720. [ In this case, in order for the discharge port 1722a to be formed at one side of the gas inlet pipe 1712a, the discharge passage 1722 is formed in an inclined form from the lower side of the gas diffuser 1721 to the inner side of the gas inlet pipe 1712a As shown in Fig.

The cleaning liquid discharged from the discharge passage 1722 is accumulated on the bottom surface of the housing 171. The cleaning liquid collected therefrom is supplied to the cleaning liquid discharge portion 1715 extending from the bottom of the housing 171 downward at a predetermined angle To the outside of the exhaust gas treatment device 1b. At this time, even if the rinse solution outlet 1715 is biased to one side only and there is no separate inclined surface on the bottom surface of the housing 171, the pitching phenomenon and rotation The entire housing 171 is inclined by a rolling phenomenon in which the hull is inclined to the left and right due to the inclination of the hull, so that it is possible to smoothly discharge the cleaning liquid and prevent accumulation of excessively accumulated on the floor surface. The manner in which the housing 171 is lifted in this way can be seen in more detail in Fig.

34, the cleaning liquid collected on the inner surface 1721a of the gas diffuser 1721 is not affected by the flow of the exhaust gas passing through the gas inflow pipe 1712a, thereby preventing pressure loss (Dotted line), and the exhaust gas is naturally dispersed (indicated by a solid line) inside the housing 171 without pressure loss by the structure.

35 to 38, the spraying means 173 has a function of spraying a cleaning liquid from above the diffusion means 172 and cleaning the exhaust gas including sulfur oxides (SOx) and PM. In particular, Side injection means 1731 for injecting the exhaust gas in the direction of the flow direction of the exhaust gas.

Referring to FIG. 35, the lateral jetting means 1731 may include a jetting body 1731a and a jetting port 1731b, which are configured to jet a cleaning liquid onto the exhaust gas.

The injection body 1731a is connected to the inner wall surface 1711 of the housing 171 as a rod-shaped supply pipe for supplying the cleaning liquid. When the housing 171 is cylindrical, the injection body 1731a may also be circularly distributed Particularly, if it is located in the space formed by being inserted into the inner wall 1711 outwardly at a certain depth, the injection means 1731 itself prevents the flow of the exhaust gas and prevents the pressure loss due to the structure.

The jetting port 1731b is formed at one end of the jetting body 1731a to jet the cleaning liquid, and is formed toward the side surface to jet the cleaning liquid to the side surface.

The exhaust gas generated by the combustion in the engine E or the boiler B includes harmful substances such as sulfur oxides (SOx) and PM which are acidic substances. The injecting means 173 neutralizes or coheses these harmful substances Thereby spraying a cleaning liquid to be removed. In general, 0.1 ~ 0.5um of PM is first aggregated by fine droplets (100 ~ 200um) and becomes bigger. In order to neutralize acidic sulfur oxides (SOx), a basic cleaning liquid is required. In the case of using fresh water, a separate alkaline additive is added to induce a neutralization reaction.

Wherein the alkaline additive is capable of such as NaOH (sodium hydroxide), Na ₂ CO ₃ (sodium carbonate) or NaHCO ₃ (sodium bicarbonate). The neutralization reaction of sulfuric acid (SOx) by a cleaning liquid containing NaOH is as follows.

_{SO 2 (g) + 2NaOH (} aq) + (1/2) O 2 (g) → 2Na + + SO 4 2- + H 2 O

However, when the exhaust gas treatment device 1b is installed on a ship operated on the sea, sea water, which is salt water, may be used. In general, seawater contains salts such as sodium chloride (NaCl), magnesium chloride (MgCl ₂ ) and potassium chloride (KCl). PH is 7.8 ~ 8.3 due to the anions such as Cl ^- , SO ₄ ^2- and Br ^- And the like. Therefore, if such seawater is used as a cleaning liquid, there is an advantage that neutralization of sulfur oxides (SOx) can be performed without adding an additional alkaline additive.

At this time, the neutralization reaction by seawater is as follows, first mixed with gaseous sulfur dioxide (SO ₂ ) water.

SO _{2 (g)} + H ₂ O ₍₁₎ ↔ H ₂ SO _{3 (aq)}

Next, it reacts with the base in seawater.

2H ₂ SO _{3 (aq)} + OH ^- ↔ 2HSO ₃ ^- _(aq) + H ⁺ _(aq) + H ₂ O _(aq)

^{_{2HSO 3 - (aq) + OH}} - (aq) ↔ ² SO ₃ ^{2 -} _(aq) + H ⁺ _(aq) + H ₂ O _(aq)

That is, sulfur dioxide is absorbed in seawater and becomes a sulfate through the above reaction.

The spraying means may spray a dual fluid containing compressed air in addition to the washing liquid composed of seawater or fresh water to spread the washing liquid in the housing 171 to increase the area of contact with the exhaust gas to improve the washing efficiency.

Further, the cleaning liquid and the compressed air may have a function of cooling the harmful substances such as SOx or PM in the exhaust gas by lowering the temperature of the exhaust gas itself. Generally, the exhaust gas generated as a by-product of combustion in the engine E and the boiler B is a high-temperature gas having a temperature of about 250 to 300 degrees at the time when it flows into the housing 171. If such a high temperature exhaust gas is directly discharged into the atmosphere, many problems arise, and various structures in the housing 171 may cause heat injury, and the cleaning liquid may be rapidly evaporated, causing a trouble in the cleaning operation . Also, even when the cleaning liquid is sprayed at a high temperature, there is a possibility that the PM may pass without passing through the agglomerated state. Therefore, the injecting means 173 injects seawater or a two-fluid mixture of fresh water and compressed air into the exhaust gas of high temperature entered into the housing 171 through the gas inlet 1712 to cool the temperature to about 50 to 60 degrees .

The function of the above-described injection means 173 is more effective when the contact area with the exhaust gas and the contact time are increased. The spraying means of the conventional exhaust gas processing apparatus injects the cleaning liquid so as to coincide with the flow direction of the exhaust gas, And the contact time was short. Therefore, there has been a problem that the cleaning operation and the cooling operation can not be effectively performed.

In addition, the exhaust gas treatment apparatus for cleaning and cooling sulfur oxides (SOx) and PM has a very long shape such as exceeding 5 m in the vertical direction. When installed in a power plant on the ground, Due to the large volume, it limits the design of the ship and damages the aesthetics. However, the conventional injection means has a problem that the exhaust gas processing device itself can not be made longer in order to ensure a sufficient contact area by spraying the cleaning liquid in parallel with the exhaust gas flow direction.

In this case, the flow of the exhaust gas is disturbed to the front, resulting in a great pressure loss. As described above, since the degree of pressure loss of the exhaust gas treatment device is numerically expressed (mmAq / m unit), it is an important factor to be used as an index indicating the performance thereof.

35 to 37, the exhaust gas treatment apparatus 1b includes a lateral injection means 1731 inside the housing 171 to spray the cleaning liquid and the compressed air on the side of the flow of the exhaust gas, The sufficient contact area and contact time of the exhaust gas and the cleaning liquid can be ensured without increasing the length of the exhaust gas 171, so that the neutralization reaction of sulfur oxides (SOx), the agglomeration of PM, and the cooling reaction of the exhaust gas can be smoothly generated. Particularly, when installed on the lower side of the inclined portion 1741 of the distributing means 174 to be described later, the cleaning liquid is sprayed to the point where the vortex is generated, so that the exhaust gas and the cleaning liquid can be actively mixed. Moreover, when the temperature is lowered by the cooling, the air is shrunk and the volume is reduced, so that there is also an effect that the PM particles agglomerate and grow relatively. Further, since there is a force on the side surface, there is an advantage that no pressure loss is caused in the flow direction of the exhaust gas. Preferably, it is preferably injected perpendicularly to the flow direction of the exhaust gas.

In addition, referring to Fig. 38, it is possible to maximize the contact area with the exhaust gas and the contact time by distributing the two liquids of the cleaning liquid and the compressed air in a conical shape, thereby increasing the efficiency of the work.

39 to 42, the distributing means 174 is located on the upper side of the injection means 173, and is formed in a mesh structure including a plurality of through holes 174a, which are small holes, And a guide portion 1742 extending downward from the lower side of the inclined portion 1741. [

Referring to FIGS. 39 and 40, the inclined portion 1741 has an upward light-narrowing shape that becomes increasingly closer to the upper side, which draws the flow of the exhaust gas to the center and forms a swirling flow below the inclined portion 1741 To mix with the cleaning liquid.

The exhaust gas treatment device 1b is required to increase the contact area and contact time evenly dispersed inside the housing 171 for effective reaction between the cleaning liquid and the exhaust gas. It tends to rise toward the inner wall surface 1711 of the housing 171 due to the influence of the gas diffuser 1721 of the housing 171. Therefore, in order to return the upward flow of the exhaust gas deflected toward the inner wall surface 1711 toward the center, a large number of small through holes 174a are formed, and the exhaust gas is broadened toward the upper side as a whole. With this configuration, the exhaust gas deflected toward the inner wall surface 1711 of the housing 171 passes through the plurality of through holes 174a inclined downward toward the center, is refracted inward, and the flow is dispersed to the center. Also, the flow of some exhaust gas that has not risen through the through hole 174a collides with the lower surface of the inclined portion 1741 and forms a vortex flow (vortex) in the process of detouring downward, so that the mixture of the cleaning liquid and the exhaust gas The neutralization reaction of sulfur oxides (SOx) and the agglomeration reaction of PM actively occur, and the cleaning effect is further improved.

39 and 41, the guide portion 1742 includes an inlet hole 1742a, which is a large hole in the middle, and has a hollow shape so that exhaust gas can pass a large amount.

Mentioned inclined portion 1741 itself has a large effect of dragging the exhaust gas flow toward the center of the inner wall surface 1711 to the center but includes a large inflow hole 1742a at the center for performing a more reliable function. With this configuration, the exhaust gas whirled by the inclined portion 1741 is uniformly distributed to the center side to increase the cleaning efficiency. The vertically formed guide portion 1742 guides the flow of the exhaust gas so that such a distribution effect can be generated more effectively. The flow of such an exhaust gas can be seen in FIG.

43 to 46, the multiple injection means 175 is located on the upper side of the distribution means 174, and a plurality of injection means are arranged vertically.

Referring to FIG. 44, the multiple injection unit 175 may include a first injection unit 1751, a second injection unit 1752, and a third injection unit 1753.

45, the first injection means 1751 includes a rod-shaped injection body 1751a, a plurality of injection belts 1751b branching at a predetermined interval from the injection body 1751a, And a plurality of ejection openings 1751c formed at regular intervals on the base 1751b.

The jetting body 1751a is connected to the inner wall surface 1711 of the housing 171 as a supply pipe for supplying a cleaning liquid from the outside.

The jetting base 1751b is branched from the jetting body 1751a and is configured to jet the cleaning liquid into a wider space. The jetting base 1751b is disposed to be offset from the jetting base 1752b of the second jetting means 1752, The area can be maximized. In addition, it eliminates the dead zone of the exhaust gas and prevents the harmful substances from being released to the atmosphere as it is.

A plurality of jetting ports 1751c are formed at predetermined positions of the jetting base 1751b to jet a mixture of the cleaning liquid and the compressed air.

46, the second injection means 1752 similarly includes the injection body 1752a, the injection stage 1752b and the injection orifice 1752c, but the respective injection stages are arranged to be shifted in the same manner as described above. With this configuration, the contact area between the cleaning liquid and the exhaust gas injected by each of the injection means is maximized, so that the neutralization reaction of sulfur oxides (SOx) and the agglomeration reaction of PM can be effectively produced.

The first injecting means 1751 and the second injecting means 1752 can be selectively operated according to the operation states of the engine E, the boiler B, and the like. At this time, the controller 1754 may further include a controller 1754 for the selective injection to control the injection according to the driving state of the engine or the boiler.

Generally, the engine (E) used in ships changes its operation rate constantly, such as when the ship is accelerating or decelerating, when the drill for drilling the seabed is operated, or when the amount of power system used increases. Also, the boiler (B) is rarely used in hot summer days, but when it is cold winter, it is often used to maintain the temperature of the crew members and to control the temperature of the cargo. Thus, the running state of the engine E or the boiler B is continuously changed, which means that the amount of combustion of the fuel is changed. When the amount of combustion of the fuel changes, the amount of exhaust gas generated by combustion also varies. The amount of harmful substances such as sulfur oxides (SOx) and PM is also changed when the exhaust gas amount is changed.

However, even if the discharge amount of the exhaust gas is reduced, an unnecessary cleaning liquid is sprayed if the amount of the cleaning liquid sprayed from the discharge gas processing device 1b is constant. In order to inject the cleaning liquid, the pump must be operated. Since the pump is operated by electric power, unnecessary injection means waste of unnecessary electric power. In addition, unlike the case of spraying a washing solution using weak water with a pH of about 8.3, it is necessary to add an alkaline additive in case of making a washing solution using fresh water, and when an unnecessary washing solution is sprayed, the alkaline additive is also wasted. Therefore, there is a need to adjust the injection amount of the cleaning liquid corresponding to the exhaust amount of the exhaust gas, which varies depending on the operation state of the engine E or the boiler B.

The multiple injection means 175 of the exhaust gas processing apparatus 1b selectively operates the first injection means 1751 and the second injection means 1752 in accordance with the operation ratios of the engine E and the boiler B The above problems can be solved by spraying the cleaning liquid. With this configuration, when the amount of exhaust gas discharged is small, only a part of the injecting means is activated to inject the washer fluid, thereby preventing waste of electric power for operation of the pump and saving alkaline additive.

The multiple injection means 175 further includes a third injection means 1753 above the first injection means 1751 and the second injection means 1752 to enable efficient cleaning of harmful substances in the exhaust gas .

At this time, like the relation between the first injection means 1751 and the second injection means 1752, the third injection means 1753 is staggered with the second injection means 1752 to enlarge the contact area between the cleaning liquid and the exhaust gas It is possible to more effectively induce the neutralization reaction of sulfur oxides (SOx) and the coagulation action of PM.

The third injecting means 1753 is also selectively operated corresponding to the amount of exhaust gas discharged depending on the operation rate of the engine E or the boiler B to prevent waste of electric power of the pump for supplying the washing liquid, You can save.

The first spraying means 1751, the second spraying means 1752 and the third spraying means 1753 spray not only the cleaning liquid composed of seawater or fresh water but also the compressed air, So that the contact time and contact area between the sulfur oxides (SOx) and the cleaning liquid can be increased to facilitate the neutralization reaction. Also, the cooling action by the compressed air can be more effectively achieved.

47 to 54, the numerical separating means 176 is located on the upper side of the multiple injection means 175, and is roughly divided into two types.

Referring to FIG. 47, the first type includes an induction portion 1761 that is cleaned by a cleaning liquid and guides the flow of the exhaust gas that has been raised, and at least one horizontal blade that forms a spiral flow of the exhaust gas raised through the induction portion 1761. [ (1762a), a stopper (1764) for blocking the flow of exhaust gas in the upper and lower portions of the vane (1762a) and flowing in a predetermined direction, a first negative pressure preventing means (1763a) for preventing differential pressure from above the horizontal vane (1762a) ).

Referring to FIG. 51, the second type includes a guide portion 1761 for guiding the flow of the exhaust gas cleaned by the cleaning liquid and guided through the guide portion 1761, and a torsion blade 1762b for forming a helical flow of the exhaust gas raised through the guide portion 1761 And second negative pressure preventing means 1763b for preventing differential pressure on the upper side and the side surface of the torsion blade 1762b.

Referring to FIGS. 47, 48 and 51 and FIG. 52, the guiding portion 1761, which is a common configuration of the two types, includes a lower guiding plate 1761a narrowed toward the upper side, And a guide tube 1761b extending upwardly.

The induction plate 1761a preferably has a hollow truncated conical shape and has a function of guiding the exhaust gas raised via the multiple injection means 175 to the center. At this time, in order to send only one side without leaking exhaust gas, it is possible to construct airtightly to fit into the inner wall surface 1711 with a circumference corresponding to the end surface of the housing 171.

The induction pipe 1761b extends upward from the upper side of the induction plate 1761a and functions as a passageway for upwardly moving the exhaust gas led to the one side by the induction plate 1761a. As shown in FIG.

Referring to FIG. 48, one or more horizontal wings 1762a of the first type are provided on a lower plate 1764b to be described later, and are laid sideways with a constant curvature. The horizontal vanes 1762a are spaced apart from each other by a predetermined distance so that exhaust gas can pass through the horizontal vanes 1762a. The horizontal wing 1762a of this shape induces a radial flow in which the exhaust gas raised through the induction pipe 1761b flows in a spiral manner to the side.

The cleaning liquid jetted from the multiple jetting unit 175 exists in a small number of droplets in the exhaust gas, and includes many harmful substances such as SOx and PM. Accordingly, the vane 1762 forms a spiral flow of the exhaust gas, and the centrifugal force generated by the vane 1762 causes the relatively heavy water to be outwardly directed to the inner wall surface 1711, Thereby separating the exhaust gas from the water droplet.

In addition, all the horizontal blades 1762a may be configured as a stationary stator. When rotating like a compressor, the speed becomes excessively high, and the cleaning operation becomes inefficient because the contact time between the exhaust gas and the cleaning liquid is insufficient.

The stopper 1764 may include an upper plate 1764a and a lower plate 1764b that cover the upper and lower sides of the horizontal vane 1762a to prevent the exhaust gas from escaping up and down without forming a spiral flow . The upper plate 1764a and the lower plate 1764b may have the shape of a circular plate when the horizontal vanes 1762a are circularly distributed.

When the exhaust gas flows into the spiral by the vane 1762, a centrifugal force is applied and the fluid is concentrated to the inner wall surface 1711 and the center is relatively lowered in pressure. In this case, the spiral flow may not be formed properly due to the differential pressure, or the pressure may be lower than the air on the upper side, which may interfere with the upward movement. Therefore, there is a need to arrange the mass at the center of the spiral flow to prevent sound pressure.

Accordingly, the first negative pressure preventing means 1763a is located above the horizontal vane 1762a to prevent differential pressure due to the spiral flow of the exhaust gas, and preferably has a conical shape from above the upper plate 1764a. The flow of the exhaust gas by this can be seen in FIG.

51 and 53, at least one torsion blade 1762b is distributed along the outer surface of the induction pipe 1761b and the inner wall surface 1711 of the housing 171, starting from the outer surface of the induction pipe 1761b, As shown in FIG. At this time, an angle (stagger angle a) between the chord of the root surface contacting the outer surface of the induction pipe 1761b and the axis of the induction pipe 1761b; And an angle (stagger angle b) between the chord of the tip surface and the axis of the induction pipe 1761b; May be configured in a twisted fashion as a whole. Generally, b is formed larger than a. The twisted wing 1762b guides the oblique flow of the air that has passed through the guide tube 1761b and spirals downward. Preferably, the stagger angle continuously increases from the root to the tip, thereby inducing the flow of the exhaust gas more effectively.

Referring to FIG. 53, the twist wings 1762b are spaced apart from each other by an interval of 30 degrees so that a sufficient space is formed between the wings and the wings when viewed from above. Thereby minimizing the pressure loss of the exhaust gas exiting the induction pipe 1761b and creating a spiral bypass flow. Also, all of the torsional vanes 1762b may be composed of a stationary stator. If the torsion vane 1762b is rotated like a compressor, the speed becomes excessively high and the contact time between the exhaust gas and the cleaning liquid is not sufficient.

The second negative pressure preventing means 1763b extends to the lower portion of the torsional vibration damper 1762b so as to allow the exhaust gas raised through the induction pipe 1761b to pass downwardly, The pipe 1761b can be covered. As a result, when the number of the cleaning liquid including the harmful substances in the exhaust gas is separated by the centrifugal force, it can be effectively separated downward. The second negative pressure preventing means 1763b is in the form of a hollow cylinder for the flow of the exhaust gas, and preferably has a cylindrical shape to effectively prevent differential pressure. Or the first negative pressure preventing means 1763a on the upper side of the second negative pressure preventing means 1763b. The spiral bypass flow of the exhaust gas with such a configuration can be confirmed in more detail in Fig.

55 and 56, the water collecting means 177 collects the water separated from the exhaust gas at the bottom of the water separating means 176. The water collecting means 177 surrounds the induction pipe 1761b, A diaphragm 1772 having the same configuration as the diaphragm 1772, a diagonal plate 1772 having the same configuration as or parallel to the diaphragm 1772, a drop tube 1773 extending downward from one side of the diagonal plate 1772, And a collecting box 1774 located at the lower end of the tray 1773.

The numerical separator 176 separates the water in the exhaust gas, and uses the centrifugal force to deflect the cleaning liquid containing harmful substances such as SOx and PM toward the inner wall surface 1711 side. The separated water droplets are required to be dropped down before they rise again under the influence of the flow of the exhaust gas. At the same time, it is necessary to prevent the exhaust gas from rising up into the passage through which the water drops fall.

49, 53 and 55, the diaphragm 1771 includes a plurality of through-holes 1771a in the vicinity thereof to drop the water drops separated from the water separating means 176. [ At this time, if the exhaust gas treatment device 1b is installed on the ship, the water can be flowed into the through hole 1771a without any inclination of the diaphragm 1771 due to rolling and pitching of the hull.

The swash plate 1772 is extended to maintain a predetermined inclination so that the water drops away from the through holes 1771a of the partition plate 1771 can flow outwardly, and preferably has a conical shape. One or more drop holes 1772a are provided on one side for dropping the water droplets that have flowed out to the outside, preferably four in total, one for every 90 degrees.

The drop pipe 1773 is extended downward from the drop hole 1772a formed at one side of the swash plate 1772 to drop the water drop to the bottom of the housing 171. [ But it is preferable that the drop hole 1772a has a cross section coinciding with the drop hole 1772a. In the case of FIG. 29, the drop hole 1772a has a triangular shape, so that the drop pipe 1773 also has a triangular column shape.

55 and 56, the collecting cylinder 1774 is a cylinder for collecting the water droplets descended by the dropping tube 1773 so that the sprayed liquid below the third injecting means 1753 is always filled . When the dropping pipe 1773 extends to the inside of the collecting cylinder 1774 and is completely immersed in the washing liquid sprayed from the third injecting means 1753, the exhaust gas rises on the dropping pipe 1773, It is possible to prevent it from being discharged without going through.

57 and 58, the numerical blocking means 178 may include a first blocking means 1781 and a second blocking means 1782, each located above the numerical separating means 176, Some of the water drops separated from the gas are prevented from falling on the inner wall surface 1711 of the housing 171 under the influence of the flow of the exhaust gas without dropping, thereby preventing the water containing the harmful substances from being discharged into the atmosphere.

Since the cleaning liquid composed of the seawater or the fresh water injected from the injection means 173 and 175 has the function of neutralizing the sulfur oxides SOx and coagulating the PMs, the washing liquid water level present in the upper portion of the exhaust gas treatment device 1b is discharged It contains various harmful substances contained in gas. If the water droplets of the cleaning liquid are discharged together with the cleaned exhaust gas into the atmosphere, the exhaust gas treatment device 1b itself becomes meaningless, so that the atmospheric release of the water should be prevented.

To this end, the horizontal blade 1762a of the numerical separating means 176 induces a spiral flow of the exhaust gas including the washing liquid numerical value, and deflects the water droplet, which is relatively heavy liquid by the centrifugal force, toward the inner wall surface 1711 side of the housing 171 . Or the inclined wing 1762b of the numerical separating means 176 bypasses the exhaust gas and induces the spiral flow so that the numerical value is shifted to the lower side of the inner wall surface 1711 by the centrifugal force. The water droplets of the cleaning liquid leaning toward the inner wall surface 1711 drop downward under the action of gravity, are collected by the water collecting means 177, fall down to the bottom of the housing 171, and are prevented from being discharged into the atmosphere.

However, in spite of the water collecting means 177, a part of the washing liquid separated by the water separating means 176 rises by the pressure difference without falling after being struck on the inner wall surface 1711 of the housing 171 And flows upward on the inner wall surface 1711 toward the upper side of the housing 171 under the influence of the exhaust gas flow. There is a need to block the discharge of harmful substances by blocking the water droplets ascending from the inner wall surface 1711 to the upper side of the housing 171 and discharging it to the atmosphere.

57, the inner wall surface 1711 includes a vertical surface 1711a extending upwardly and downwardly, and an inclined surface 1711b extending from the vertical surface 1711a in the vicinity of the gas outflow portion 1713, ). The slope 1711b can cut off the water droplet that rises along the vertical surface 1711a due to the influence of the exhaust gas to some extent. However, when the exhaust gas meets the inclined surface 1711b, the inclined surface 1711b is bent and flows along the inclined surface, so that there is a concern that the numerical value affected by the exhaust gas also rises along the inclined surface 1711b and is released to the atmosphere.

In order to prevent this, the first blocking means 1781 may include a blocking wall 1781a extending downward from one side of the inclined surface 1711b. The blocking wall 1781 is distributed in the form of a thick band along the boundary of the gas outflow portion 1713. When the gas outflow portion 1713 is circular, the blocking wall 1781a has a hollow cylindrical shape. As a result, the number of pieces of water that have risen along the inner wall surface 1711 flows down along the blocking wall 1781a via the inclined surface 1711b and there is no surface to be lifted further at the lower end of the blocking wall 1781a. Falls. Preferably, the blocking wall 1781 is expanded in a direction in which gravity acts to further improve the blocking effect. This numerical flow can be seen in more detail in FIG.

The second blocking means 1782 is located below the first blocking means 1781 and may include a downward sloping surface 1782b and another blocking wall 1782a.

The lower inclined surface 1782b is bent toward the center at a predetermined angle from one side of the vertical surface 1711a of the housing 171. The downward inclined surface 1782b has a function of guiding a water drop rising on the vertical surface 1711a to the blocking wall 1782a . At this time, it is preferable that the angle is formed larger than 90 degrees and the inclined surface is inclined downward to smoothly guide the number.

The blocking wall 1782a extends downward from the end of the lower inclined surface 1782b, and is preferably developed in a direction in which gravity acts. The water drops falling down on the downward inclined surface 1782b meet the blocking wall 1782a and descend vertically so that the surface of the blocking wall 1782a no longer rushes and flows downward due to gravity.

By the two blocking means 1781 and 1782, the water droplets of the cleaning liquid including the harmful substances such as SOx and PM can be prevented from being released to the atmosphere together with the clean gas.

Based on the above-described configuration, exhaust gas generated by combustion in an engine or a boiler passes through the exhaust gas treatment device 1b to remove harmful substances such as sulfur oxides (SOx) and particulate matter (PM) The process of converting into gas will be described with reference to FIGS. 29 and 30. FIG.

Referring to FIGS. 29 and 30, the exhaust gas enters the interior of the housing 171 through the gas inlet 1712. The mixture of the washing liquid and the compressed air injected from the injecting means 173 soon causes the PM in the exhaust gas to cohere with the diffusing means 172 on the upper side of the gas inlet pipe 1712a. At this time, the exhaust gas by the diffusion means 172 forms a flow deflected toward the inner wall surface 1712, passes through the distributing means 174 and is evenly distributed to the center. Neutralization of sulfur oxides (SOx) and agglomeration of PM are caused by the cleaning liquid jetted from the multiple injection means 175 and the spiral flow formed by the water separating means 176 Uses a centrifugal force to separate the water droplets outward. The separated water droplets fall by the water collecting means 177, and the exhaust gas turns helically and continues to rise. However, some of the water drops that can not fall due to the exhaust gas flow and rise along the inner wall surface 1711 are blocked by the blocking means 178 so as to be prevented from being released to the atmosphere.

Through the above-described structure and process, the exhaust gas separates harmful substances such as sulfur oxides (SOx) and particulate matter (PM), and is released into the atmosphere as a clean gas.

59 shows an exhaust gas treatment system according to another embodiment of the present invention.

The exhaust gas treatment system shown in Fig. 59 is different from the embodiment shown in Fig. 1 in that the level measurement unit 61, the flow rate control unit 62, the level determination unit 63, And a measure section 64. [

The level measuring unit 61 measures the level of the cleaning liquid in the noxious gas removing unit 6. The cleaning liquid discharged from the exhaust gas treatment device 1 remains in the cleaning device for a certain period of time and the remaining noxious gas remains in a gaseous state in the cleaning liquid. The level of the cleaning liquid remaining in the noxious gas removing means 6, that is, the level of the rubbing liquid, can be measured, so that the operation corresponding to the processing capacity of the noxious gas removing means 6 can be performed.

The level measuring unit 61 may measure the level of the cleaning liquid in the noxious gas removing unit 6 based on the pressure in the noxious gas removing unit 6. [ In this case, the level measuring unit 61 includes a pressure sensor, that is, a transducer, which senses a pressure change in accordance with the level change of the cleaning liquid in the noxious gas removing unit 6, And a connector for connecting the amplifier and the transducer.

In addition to the measurement method based on the above-described pressure, the level measuring unit 61 may adopt various methods such as an ultrasonic measurement method and the detailed configuration may be changed accordingly. That is, the manner in which the level measuring unit 61 measures the level of the cleaning liquid in the noxious gas removing means 6 is not particularly limited in a specific manner.

The flow control unit 62 controls the flow rate of the cleaning liquid discharged from the harmful gas removing unit 6 based on the measurement result of the level measuring unit 61. The flow control unit 62 includes a control unit connected to the level measurement unit 61 in a circuit connection or through wired / wireless communication, and a control unit for controlling the discharge flow rate of the harmful gas removing unit 6 under the control of the control unit. Etc., and a throttle valve may be applied as the adjusting means.

It is preferable that the flow rate control unit 62 adjusts the cleaning liquid discharge flow rate in real time so that the level of the cleaning liquid in the noxious gas removing unit is within a preset range. Thus, the level of the cleaning liquid staying in the noxious gas removing means 6 can be maintained at a level suitable for removing the noxious gas.

The level judging unit 63 judges whether the level of the cleaning liquid remaining in the exhaust gas processing apparatus 1 has reached a predetermined threshold level in order to move to the harmful gas removing means 6. The level determiner 63 may include a level switch that is provided at a position where the level of the cleaning liquid in the exhaust gas processing apparatus 1 can be measured and notifies when a certain level is reached.

Since the harmful gas removing means 6 is designed in consideration of the capacity of the cleaning liquid discharged from the exhaust gas processing apparatus 1, 1) is also maintained at an appropriate level. However, the cleaning liquid can not be smoothly discharged through the noxious gas removing means 6 due to a failure of at least one of the noxious gas removing means 6, the level measuring portion 61 and the flow rate adjusting portion 62, Accordingly, when the level of the cleaning liquid exceeds the critical level in the exhaust gas treatment device 1, the durability and performance of the exhaust gas treatment device 1 may be adversely affected. The level judging unit 63 is for preventing such a problem.

The level determining section 63 determines that the level of the cleaning liquid remaining in the exhaust gas processing apparatus 1 is lower than a predetermined threshold level in order to move to the harmful gas removing means 6 , And generating a danger warning and stopping the injection of the cleaning liquid into the exhaust gas processing apparatus (1). The action unit 64 may include a control unit that is connected to the level determination unit 63 in a circuit connection or through wired / wireless communication to generate an alarm or control the exhaust gas processing device 1. [

The action unit 64 may generate the danger warning through visual or auditory means or may operate the exhaust gas treatment device 1 to stop the spraying of the cleaning liquid from the exhaust gas treatment device 1 It may also be interrupted. This measure of the action unit 64 can prevent deterioration or failure of the durability of the exhaust gas treating apparatus 1 due to the reverse flow of the cleaning liquid.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Should be interpreted as falling within the scope of.

1, 1a, 1b: exhaust gas processing device
2: Transfer piping
3: Transfer piping blocking means
4: Bypass piping
5: Bypass piping blocking means
6: Hazardous gas removing means
61: level measuring section 62: flow rate regulating section
63: Level judging unit 64:
7:
71: fan 72: check valve
73: connection port
8: Air supply
81: Ventilation part 82: Feed pipe sealing part
83: Bypass piping sealing part 84: Reaction inducing part
11: preprocessor
111: Pre-processor housing
1111: inner wall 1112: exhaust gas inlet
1113: Pretreatment gas outlet 1114: Cleaning liquid inlet
1115:
112: first pretreatment injection means 113: stirring means
114: second pre-treatment injection means
12: Connection
13: Post-processor
131: Postprocessor housing
1311: inner wall 1312: pretreatment gas inlet
1313: post-treatment gas outlet part 1314: cleaning liquid inlet part
1315:
132: diffusion means 133: packing
134: Packing support means 135: First post-treatment injection means
136: second post-treatment injection means 137:
138: Cleaning means 139: Numerical blocking means
171: Housing
1711: inner wall surface 1712: gas inlet portion
1713: gas outflow part 1714: cleaning liquid inflow part
1712a: gas inlet pipe 1712b: gas inlet portion
1711a: vertical surface 1711b: inclined surface
1715:
172: diffusion means
1721: Gas diffuser 1722:
1721b: Outer side 1721d:
1721d-1: First surface 1721d-2: Second surface
1722a:
173: injection means 1731: side injection means
174: Distribution means 1741:
1742:
174a: Through hole 1742a: Inlet hole
175: Multiple injection means 176: Numerical separation means
1761: guide portion 1762: wing
1763: Means for preventing negative pressure 1764:
177: water collection means
1771: diaphragm 1772: swash plate
1773: Drop pipe 1774: Collection container
1771a: Through hole 1772a: Drop hole
178:
1781a: blocking wall 1782a: blocking wall
1782b: downward slope

Claims (12)

An exhaust gas processing device for introducing an exhaust gas generated by combustion and injecting a cleaning liquid into the exhaust gas to remove harmful substances in the exhaust gas;
A transfer pipe for transferring the exhaust gas from the combustion device for generating exhaust gas by combustion to the exhaust gas processing device,
A blowing portion for causing a flow of air,
And an air supply unit including an air supply unit that supplies air to the exhaust gas processing unit at the same time as the air is exhausted from the exhaust gas processing unit to allow the exhaust gas remaining in the exhaust gas processing unit to be exhausted,
Further comprising a transfer pipe blocking means for blocking the flow of the exhaust gas in the transfer pipe to the exhaust gas processing device simultaneously with the exhaust gas processing device ratio,
Wherein the ventilating portion supplies the air to the exhaust gas processing device in a state in which the ventilating portion is blocked by the transfer pipe shutoff means
Exhaust gas treatment system.
delete The method according to claim 1,
Wherein the ventilation part includes an air supply pipe for ventilation, the ventilation part having one end connected to the blowing part and the other end connected to a section between the transfer pipe blocking part and the exhaust gas processing device among the transfer piping. .
The method of claim 3,
Wherein the ventilation portion further comprises an air supply pipe valve for ventilation for opening and closing the flow passage of the ventilation air supply pipe.
5. The method of claim 4,
Wherein the transfer pipe shutoff means is a transfer pipe damper valve installed in the transfer pipe and shutting off an exhaust gas flow path in the transfer pipe by receiving air in a closed state.
6. The method of claim 5,
Wherein the air supply part further comprises a transfer pipe sealing part for supplying the transfer pipe blocking part with air generated by the flow-in part.
The method according to claim 6,
A bypass pipe for bypassing the exhaust gas in a state in which the piping branched from the transfer pipe is blocked by the transfer pipe blocking means,
A bypass piping blocking means for blocking the bypass piping such that the exhaust gas processing apparatus ratio is bypassed to the bypass piping at the same time while the exhaust gas processing apparatus is operated and the exhaust gas proceeds to the transfer piping The exhaust gas treatment system further comprising:
8. The method of claim 7,
Wherein the bypass piping blocking means is a bypass piping damper valve that is provided in the bypass piping and receives air in a closed state to shut off the exhaust gas flow path in the bypass piping.
9. The method of claim 8,
Wherein the air supply unit further includes a bypass pipeline sealing unit for supplying the bypass piping blocking unit with the air having flowed by the blowing unit.
10. The method according to any one of claims 1 to 9,
Further comprising a noxious gas removing means connected to the exhaust gas treating apparatus to remove noxious gas remaining in a gaseous state in a cleaning liquid discharged from the exhaust gas processing apparatus and to discharge a cleaning liquid from which gaseous noxious gas has been removed,
Wherein the air supply unit further comprises a reaction inducing unit for supplying air to the noxious gas removing unit through the air flow generated by the air supplying unit to induce reaction with the noxious gas.
11. The method of claim 10,
Wherein the reaction inducing portion includes an air supply pipe for reaction, one end of which is connected to the blowing portion, and the other end of which is in communication with the noxious gas removing means.
12. The method of claim 11,
Wherein the reaction induction unit further comprises a reaction air supply pipe valve for opening and closing the flow path of the reaction air supply pipe.

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