JP2002336628A - Apparatus for removing suspended particles in exhaust gas - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for removing suspended particles in an exhaust gas, by which white smoke generated in start-up is removed and the suspended particles in the exhaust gas are decomposed. SOLUTION: The apparatus for removing the suspended particles in the exhaust gas possesses a fine particle removing means 14 formed by incorporating a filter, which is a collecting means for collecting the suspended particles 12 in the exhaust gas 11, in a vessel main body 10 and a cooling means 15 for cooling the vessel main body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to suspended particulates (SP) contained in exhaust gas from an internal combustion engine such as a diesel engine for marine, land-based, or stationary use.
The present invention relates to an apparatus for removing suspended particulates in exhaust gas for removing M).

[0002]

2. Description of the Related Art Conventionally, ceramic honeycombs have been used to remove suspended particulates (SPM, hereinafter also referred to simply as "particulates") contained in exhaust gas from marine, land-based, and stationary diesel engines. D by filter etc.
PF (Diesel Particulate Filter) has been proposed,
Fine particles are trapped in the DPF, and the exhaust resistance increases as the amount of deposition increases, so this is burned and removed for regeneration.

[0003] As this regeneration method, the exhaust gas temperature is raised by a method of improving the exhaust gas temperature by throttling, a heater heating method, a reheating method, or the like.
Unburned components in the collected fine particles were burned.

[0004]

However, the conventional method for decomposing fine particles has the following problems. (1) There is a problem that the honeycomb-shaped ceramics filter is damaged due to repeated thermal shocks at the time of regeneration. (2) Due to the occurrence of abnormal combustion, there is a problem that the heat resistance and the thermal shock resistance of the filter material are insufficient and the filter material is damaged. (3) There is a need to reduce the processing cost because utility costs such as equipment for heating and reheating the heater and fuel are required. (4) If the combustion is not sufficient, the pressure loss increases and the filter becomes unusable, and as a result, the filter itself needs to be replaced.

[0005] When the diesel engine is started,
There is a problem that white smoke containing oil (tar), water, sulfate and the like is generated, but at present, there is no proposal for efficiently removing this.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an apparatus for removing suspended particulates in exhaust gas, which can remove white smoke at the time of startup and can decompose suspended particulates in exhaust gas at a low temperature. I do.

[0007]

Means for Solving the Problems A first invention of the present invention for solving the above-mentioned problems is a floating particulate removing apparatus for removing floating particulates in exhaust gas.
It is characterized in that it comprises a particulate removing means in which a trapping means for trapping the suspended particulates is provided in a container body, and a cooling means for cooling the particulate removing means.

A second aspect of the present invention is an apparatus for removing suspended particulates in an exhaust gas, the trapping means being provided in a container body, and allowing the exhaust gas to flow therethrough to collect the suspended particulates. A catalyst solution adhering means for adhering the catalyst solution to the surface of the suspended fine particles collected by the collecting means; and a cooling means for cooling the outside of the container body.

A third aspect of the present invention is a floating particulate removing apparatus for removing floating particulates in exhaust gas, which is provided inside a container body, and a trapping means for trapping the floating particulates by ventilating the exhaust gas. A catalyst solution adhering means for adhering a catalyst solution to the surface of the suspended fine particles collected by the collecting means, and a cooling water spraying means for spraying cooling water inside the container body. .

According to a fourth aspect, in the second or third aspect, the catalyst solution contains a catalyst containing at least one of an alkali metal and an alkaline earth metal, and the catalyst solution is collected by the collection means. The method is characterized in that the fine particles are catalytically burned during exhaust gas aeration and removed.

According to a fifth aspect of the present invention, in the first aspect, at least two of the above-mentioned fine particle collecting means are provided, and the collecting means alternately collects suspended fine particles in the exhaust gas, and the exhaust gas is passed through one of the collecting means. While collecting the suspended particulates and burning the particulates by the heat of the exhaust gas, the catalyst solution is attached to the particulates collected by the other collecting means and dried, and then when the particulates are collected again The catalyst is characterized by catalytically decomposing fine particles having a catalyst adhered thereto.

A sixth aspect of the present invention is an exhaust gas treatment system for purifying exhaust gas, comprising first to fifth suspended particle removing devices interposed in an exhaust gas flue for decomposing and treating suspended particles in exhaust gas. It is characterized by.

A seventh aspect of the present invention is a method for removing fine particles in exhaust gas, which removes fine particles in exhaust gas, wherein the fine particles in the exhaust gas are collected by a collecting means while being cooled when the internal combustion engine is started. The catalyst solution is attached to the surface of the collected fine particles, and the fine particles are burned and decomposed by passing or heating the exhaust gas.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.

[First Embodiment] FIG. 1 is a schematic view of an apparatus for removing suspended particulates in exhaust gas according to the present embodiment. FIG.
As shown in FIG. 1, the suspended particulate removal device 100 according to the present embodiment allows exhaust gas from an internal combustion engine such as a diesel engine or the like for a ship, a land vehicle, or a stationary vehicle to pass therethrough, so that the Filter 1 as a trapping means for trapping suspended particulates (hereinafter referred to as “particles”) 12
3 inside the container body 10 for removing fine particles;
And a cooling means 15 for cooling the container body 10.

Here, in the present invention, the exhaust gas 11 refers to an exhaust gas discharged from an internal combustion engine such as a diesel engine or a gasifier, and is not particularly limited, and the combustibility floating in the exhaust gas is not particularly limited. Gas containing fine particles (SPM).

In the present embodiment, the fine particles are collected by the filter 13 and the exhaust gas 11 is cooled at the time of startup by the cooling means 15 for cooling the container body 10. Can be collected.

That is, when collecting the fine particles 12 in the exhaust gas 11, when starting the engine or the like, white smoke is generated outside.
The container body 10 is cooled by passing water, and as shown in FIG. 1 (A), tar content (white circles) in the exhaust gas 11 to be ventilated.
17 are aggregated. As a result, together with the collection of the fine particles (black circles) 12 in the exhaust gas 11, the aggregated tar content 1
It also collects 7. As a result, when starting the engine, white smoke is not generated from the end of the exhaust pipe toward the outside.

The cooling means 15 may be of an external cooling type in which a cooling pipe or a cooling jacket is provided outside the container 10, or an internal cooling means for cooling the inside by providing a spraying means for spraying cooling water inside the container 10. It may be an expression or any.

Since the white smoke is generated when the engine or the like is started, the cooling by the cooling means 15 is terminated after a predetermined time has elapsed, and thereafter, the fine particles 12 in the exhaust gas are continuously collected.

Thereafter, the tar component 17 collected by the filter 13 is removed by catalytic combustion. It is preferable that the removal of the tar 17 by burning is performed together with the fine particles 12 collected by the filter by attaching the catalyst solution 19 thereto.

Here, the fine particles 12 and tar 17
Examples of the collecting means for collecting the filter include a disk-type filter or a cylindrical-type filter, but can also collect fine particles and tar in exhaust gas such as a honeycomb filter, and can attach a catalyst solution. There is no particular limitation as long as the filter has a shape.

The procedure for preventing white smoke in this embodiment will be described below. FIG. 1A shows a state in which fine particles in exhaust gas are being collected by the collecting means, and FIG. 1B shows a state in which a catalyst solution is being supplied into the collecting means.

In the state shown in FIG.
Is introduced into the filter 13 through the exhaust pipe 18,
The fine particles 12 are collected by the filter 13. When the engine is started, the cooling means 15 causes the container body 10
Is cooled, the tar component 17 derived from white smoke is concentrated and collected by the filter 13 in the same manner as the collection of the fine particles 12.

On the other hand, as shown in FIG.
8 is closed, and a valve 22 provided in a supply pipe 21 for supplying a catalyst solution is opened to supply a catalyst solution 19 from a catalyst tank (not shown) to fill the container 10. Then, the tar component 1 derived from white smoke collected in the filter 13
The catalyst is attached to the surfaces of the fine particles 7 and the fine particles 12 in the exhaust gas. After soaking for a predetermined time, the valve 24 is opened from the catalyst solution discharge pipe 23 to discharge the catalyst solution 19.

Next, the concept of catalytic combustion of the collected fine particles 12 is shown in FIG. As shown in FIG.
The surfaces of the fine particles and tar collected in Step 3 are covered with the catalyst solution 19. Thereafter, when the drying of the catalyst solution proceeds by passing cooling air or exhaust gas, the catalyst itself stays on the surfaces of the fine particles 12 and the tar portion 17 and penetrates into the pores. Further, the catalyst solution that has entered the inside of the fine particles 12 is also dried, and the catalyst component having catalytic activity remains uniformly on the surface and inside of the fine particles 12 and the tar component 17.

Thereafter, by aerating the exhaust gas 11, catalytic combustion proceeds slowly at the temperature of the exhaust gas 11 (about 300 ° C.). By this catalytic combustion, a catalytic action works not only on the surface of the fine particles 12 and the tar portion 17 but also inside thereof, and complete combustion of the fine particles and the tar portion becomes possible.

As a result, without using a heater or the like as in the prior art, and in a low temperature region (about 300 ° C.),
The unburned components (soot, tar, etc.) in the fine particles can be decomposed. Therefore, since the fine particles 12 in the exhaust gas are collected and catalytic combustion is performed, the treatment can be continuously performed, and the purified clean exhaust gas can be discharged. At the same time, since the container body 10 is cooled when the engine is started, it is possible to prevent the generation of white smoke which has been generated at the time of starting the engine.

Here, in the present invention, the catalyst includes at least one of alkali metals such as Na and K, such as potassium carbonate and sodium carbonate, and alkaline earth metals. In addition, seawater can be used as an alkali catalyst. Further, at least one of the above alkali metals or alkaline earth metals may be added to seawater.

In the present embodiment, the catalyst is supplied to the fine particles and the surface of the tar by immersing the filter by supplying the catalyst solution 19, but the present invention is not limited to this. The catalyst can also be attached by spraying the solution with a spraying means so as to cover the surface of the fine particles.

The filter 13 has a function of sufficiently collecting the fine particles 12 and the tar 17 in the exhaust gas 11. The filter material is used for catalytic combustion and deposition of the catalytic solution. It is necessary to use a material having excellent thermal shock resistance. Examples of the heat shock resistant filter include a metal filter, a heat-treated ceramic filter, and the like.

The structure of the filter is not particularly limited. For example, a laminated metal mesh type filter in which a metal filter is laminated on a support layer having a filter strength, or a support layer having a filter strength is provided. A laminated metal non-woven fabric type filter formed by laminating a metal non-woven fabric thereon can be exemplified.

In the above-described embodiment, as shown in FIG. 1, the filter 13 is, for example, a support layer 13a.
A ceramic layer 13b is disposed on the upper surface side of the substrate, and the collection efficiency is improved by using a multilayer ceramic filter composed of a protective mesh layer 13c for protecting the ceramic layer 22.

Further, the unit of the above-mentioned particle removing apparatus is composed of two units.
In one series, the fine particles in the exhaust gas are removed.
In another series, the fine particles may be burned for regeneration. Thereby, the fine particles in the exhaust gas can be continuously removed.

[Second Embodiment] FIG. 3 is a schematic diagram of a system for removing particulates in exhaust gas according to the present embodiment, which continuously processes exhaust gas in two lines. As shown in FIG. 3, the system for removing particulates in exhaust gas of the present embodiment is a system for removing particulates 12 in exhaust gas 11 discharged from an internal combustion engine 101 such as a diesel engine, for example.
An exhaust pipe 18 from the internal combustion engine 101 that discharges the exhaust gas 11 is branched into a first exhaust pipe 18A and a second exhaust pipe 18B, and is interposed in the first exhaust pipe 18A.
A first particle removing device 100A for collecting the fine particles 12 by a filter 13 provided therein, a second fine particle removing device 100B interposed in the exhaust pipe 18B for collecting the fine particles 12, Removal device 100A, 100
B: a catalyst supply means 104 for supplying a catalyst solution 103 to the catalyst tank 103 via a pump;
The cooling / drying means 106 for supplying the cooling air 105 to the filters 0A and 100B and drying the surface of the filter 13, and the discharge passage of the exhaust gas 11 are alternately provided to the first particle removing device 100A and the second particle removing device 100B. , And a control device (not shown).

The fine particle removing devices 100A and 100A
For 0B, for example, two particle removing devices 100 shown in FIG. 1 may be used, and a cooling means 15 is provided outside the container main body 10 to cool the container main body 10.

In order to improve the collection efficiency, a plurality of similar devices may be provided in parallel.

In the present embodiment, the first particulate removal device 100A and the second particulate removal device 100B
The fine particles 12 in 1 are alternately collected, and while the fine particles are collected by the filter 13 of one fine particle remover 100A, the catalyst solution is attached to the fine particles already collected by the other fine particle remover 100B. And then dry, and then the catalyst-decomposed fine particles are decomposed by catalytic combustion. At the same time, when the internal combustion engine 101 is started, the container is cooled by the cooling means 15 to prevent the emission of white smoke.

Next, FIG. 4 shows a map of switching using the system according to the present embodiment. Note that this map shows a case in which the operation of the internal combustion engine 101 is continuously performed, and after the particulates of the exhaust gas are removed by the first particulate removing apparatus 100A, the switching is performed and the particulates are continuously removed by the second particulate removing apparatus 100B. Although described, the present invention is not limited to this.

As shown in FIG. 4, when the first fine particle removing device 100A collects the fine particles 12 in the exhaust gas 11, the exhaust gas 11 at about 300 ° C. is passed during normal operation (S-200). ). When the engine is started, cooling by the cooling means 15 is performed as shown in FIG. On the other hand, in the second particle removing device 100B, first, the catalyst solution 19 is supplied in order to attach the catalyst solution 19 to the fine particles 12 and tar 17 collected earlier. When the internal combustion engine is used continuously, since the exhaust gas ventilation temperature before the supply of the catalyst solution 19 is high (about 300 ° C.), it is necessary to cool the filter 13 once (S−). 201). When the temperature falls to 100 ° C. or lower by cooling, the catalyst solution 19 is supplied (S-202).
Next, the filter is immersed in the catalyst solution for a predetermined time, and then the catalyst solution 19 is discharged (S-203), and dried by the cooling / drying means 106 (S-204).

By repeating this operation, after a certain period of time, a catalyst is attached to the fine particles adhered by the filter, and then the catalyst is burned by the sensible heat of the exhaust gas 11 to decompose and remove the fine particles in the exhaust gas. be able to. Note that an external heat source such as a heater can be separately used as necessary instead of the exhaust gas.

Although the above-mentioned switching map shows a case of continuous operation of the internal combustion engine 101, the present invention is not limited to this. For example, the first particulate removal device 100A performs particulate removal of exhaust gas for a predetermined period (for example, 1 day)
Switch the flow path and start again the next day, and remove the particulates for a predetermined period (for example, one day) with the second particulate removal device 100B. Can be. The switching timing includes a method of switching when a predetermined filter pressure loss is reached, and a method of switching after passing exhaust gas for a certain period of time, but is not particularly limited.

[Third Embodiment] FIG. 5 is a schematic view of an apparatus for removing particulates in exhaust gas according to another embodiment of a filter. As shown in FIG. 5, the apparatus 100 for removing particulates in exhaust gas according to the present embodiment includes an exhaust gas (containing, particulates 12) 11
And a fine particle collecting portion (hereinafter, referred to as a “collecting portion”) 31 for collecting fine particles 12 in the exhaust gas is provided, and the fine particles 12 collected by the collecting portion 13 are dropped. The particles are dropped using water 32 and the dropped particles are filtered
In order to remove it.

Further, the fine particle removing apparatus of the present embodiment
The collecting section 31 and the filtering section 33 are integrated into an exhaust pipe 1.
Cooling means 15 for cooling the container body 10 by supplying cooling water 16 is provided outside the container body 10 while being provided inside the container body 10 interposed in the inside 8. Therefore, when the engine or the like is started, by cooling the container body 10 by the cooling means 15, the white smoke in the exhaust gas 11 is agglomerated, and is collected by the collection unit 31 as the tar component 17 together with the collection of the fine particles 12. Things.

Further, a supply pipe 34 for supplying fine particle falling water 32 is connected to the container body 10. After collecting the fine particles of the exhaust gas by the collection unit 31, the ventilation of the exhaust gas 11 is stopped. The falling water 32 is supplied to drop the collected fine particles 12 from the collecting unit 31. Thereafter, when the falling water 32 is drained from the drain pipe 35, the fine particles 12 and tar are collected as a cake layer on the surface side of the filtration unit 33 at the interface between the collection unit 31 and the filtration unit 33.

The fine particles 1 collected as the cake layer
2 and the tar component 17 can be removed by the following method. A method in which a catalyst is attached to fine particles using an aqueous catalyst solution, and the catalyst is burned when exhaust gas is ventilated. A method in which a heater is provided in the filtration unit 33 and combustion is removed by heating the heater. When a certain amount of fine particles have accumulated, the filtration unit 33 is replaced. It is removed by a method that combines the above.

The collecting section 31 has an opening of 0.2 to 0.2.
A filter of 15 mm is used, and the filter is collected in the filter without forming a cake layer of the fine particles 12 and the tar component 17, thereby suppressing an increase in pressure loss.

The filter constituting the collecting section 31 is as follows.
Any of a wire mesh filter woven with a metal wire, a felt filter made of metal fiber, a metal filter such as a sintered metal, a ceramic filter, and a filter filled with coarse particles may be used.

When the amount of exhaust gas to be treated is large, a unit including a large number of collection units 31 and filtration units 33 may be provided, and a plurality of units may be provided.

[Fourth Embodiment] Next, a third embodiment will be described with reference to FIG. In the second embodiment, an external cooling system is used, but in the present embodiment, an internal cooling system is used. The device 100 for removing particulates in exhaust gas according to the present embodiment includes
A cooling means 41 for spraying the cooling water 16 in a shower-like manner is provided such that its spray port is along the ventilation direction of the exhaust gas. As a result, white smoke generated when the engine or the like is started is prevented. In the present embodiment, since the cooling water is sprayed at the time of startup, the cooling water is discharged as a drain as necessary. The spraying of the cooling water 16 is not limited to a spraying method from the upper side in a shower shape, but may be any spraying method for cooling the exhaust gas. The collection of the fine particles 12 and the tar 17 is the same as in the third embodiment.

Hereinafter, an example of an exhaust gas purifying system including the above-described various devices for removing particulates in exhaust gas of the present invention will be described, but the present invention is not limited to these systems.

[Fifth Embodiment] FIG. 7 is a schematic diagram of an exhaust gas purification system according to a fifth embodiment. FIG.
As shown in FIG. 1, the exhaust gas purification system according to the present embodiment is an exhaust gas treatment system for purifying exhaust gas discharged from an internal combustion engine, and is provided in a flue of exhaust gas from a diesel generator 201 which is an internal combustion engine. The apparatus further includes a particle removing device 100 for decomposing and treating the particles in the exhaust gas 11. A denitration device 202 is provided downstream of the particle removing device 100 to remove the particles and remove nitrogen oxides and the like. Clean gas 203 with harmful substances removed from chimney 2
04.

[Sixth Embodiment] FIG. 8 is a schematic diagram of an exhaust gas purification system according to a sixth embodiment. FIG.
As shown in FIG. 1, the exhaust gas purifying system according to the present embodiment is an exhaust gas processing system for purifying exhaust gas discharged from an internal combustion engine, in which exhaust gas from a large diesel engine 211 that is an internal combustion engine is branched. A particulate removing device 10 for decomposing and treating particulates in exhaust gas 11 in a flue
0 and the diesel engine 21
A part (about 30%) of the exhaust gas from 1 is recirculated to the diesel engine 211 again. As a result, an exhaust gas recirculation device (EGR) that recirculates the exhaust gas from which the fine particles have been removed by the fine particle removal device 100 is configured.

As a result, the exhaust gas for lowering the combustion temperature is supplied in a clean form from which fine particles have been removed, so that there is no blockage of the pipe or wear of the engine, etc. The amount of product generated can be reduced.

The present system also generates exhaust gas discharged from an internal combustion engine (for example, a land-based internal combustion engine such as a truck, a bus, a roller, a forklift, or a shovel car, or a land-fixed internal combustion engine such as a compressor or a generator). The present invention can also be applied to an exhaust gas treatment system for purification. Furthermore, it can also cope with a cogeneration system.

As described above, according to the present invention, unburned particulate matter (SPM) contained in exhaust gas from an internal combustion engine such as a marine, land-based or land-based diesel engine is decomposed at a low temperature. It is possible to build a system that can do this.

[0057]

As described above, according to the first aspect of the present invention, there is provided a floating particle removing apparatus for removing floating particles in exhaust gas, wherein the exhaust gas is ventilated to capture the floating particles. Since it is provided with a particulate removing means in which a collecting means for collecting is provided inside the container body and a cooling means for cooling the particulate removing means, it is possible to cool the exhaust gas at the time of starting using the cooling means, The fraction can be collected by the collecting means.

A second aspect of the present invention is a floating particulate removing apparatus for removing floating particulates in exhaust gas, which is provided in a container body, and a collection means for collecting the floating particulates by ventilating the exhaust gas. A catalyst solution adhering means for adhering a catalyst solution to the surface of the suspended fine particles collected by the collecting means, and a cooling means for cooling the outside of the container body,
External cooling improves cooling efficiency.

A third aspect of the present invention is a floating particle removing apparatus for removing floating particles in exhaust gas, which is provided in a container body, and a collection means for collecting the floating particles by ventilating the exhaust gas. A catalyst solution adhering means for adhering a catalyst solution to the surface of the suspended fine particles collected by the collecting means, and a cooling water spraying means for spraying cooling water into the inside of the container body. Cooling efficiency is improved.

According to a fourth aspect, in the second or third aspect, the catalyst solution contains a catalyst containing at least one of an alkali metal and an alkaline earth metal, and the catalyst solution is collected by the collection means. Since the fine particles are catalytically burned and removed when the exhaust gas is ventilated, the fine particle removal efficiency is improved.

According to a fifth aspect of the present invention, at least two of the above-mentioned fine particle collecting means are provided, and the floating fine particles in the exhaust gas are alternately collected by the above-mentioned collecting means. While collecting and burning the fine particles by the heat of the exhaust gas, the catalyst solution adheres to the fine particles collected by the other collecting means and is dried, and then the catalyst adheres when collecting the particles again. It is characterized by catalytic decomposition of the fine particles.

The sixth aspect of the present invention is an exhaust gas treatment system for purifying exhaust gas, which has first to fifth suspended particle removing devices interposed in a flue of exhaust gas and for decomposing and treating suspended particles in exhaust gas. In addition, it is possible to continuously remove suspended particulates in exhaust gas from an internal combustion engine such as a diesel engine at a low temperature, and to prevent white smoke at the time of startup.

A seventh aspect of the present invention is a method for removing fine particles in exhaust gas, which removes fine particles in exhaust gas, wherein the fine particles in exhaust gas are collected by cooling means at the time of startup of the internal combustion engine while being cooled. The catalyst solution is attached to the surface of the collected fine particles, and the fine particles are burned and decomposed by the ventilation or heating of the exhaust gas. Therefore, the exhaust gas can be cooled at the time of startup using the cooling means, and the tar component is collected by the collecting means. be able to.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a particle removing device according to a first embodiment.

FIG. 2 is a schematic diagram showing a state in which a catalyst solution adheres to fine particles.

FIG. 3 is a schematic diagram of a system using a particle removing device according to a second embodiment.

FIG. 4 is a diagram showing an example of a map for exhaust gas treatment.

FIG. 5 is a schematic diagram of a particle removing device according to a third embodiment.

FIG. 6 is a schematic diagram of a particle removing device according to a fourth embodiment.

FIG. 7 is a schematic diagram of an exhaust gas purification system according to a fifth embodiment.

FIG. 8 is a schematic diagram of an exhaust gas purification system according to a sixth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Exhaust gas 12 Suspended fine particles (fine particles) 13 Filter 14 Fine particle removing means 15 Cooling means 16 Cooling water 17 Tar content 18 Exhaust pipe 19 Catalyst solution 201 Diesel generator 202 Denitration device 203 Clean gas 204 Chimney 211 Diesel engine

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme court ゛ (Reference) F01N 3/02 301 F01N 3/02 321B 321 321C 321J 3/24 E 3/24 B01D 53/36 103C (72 ) Inventor Osamu Naito 1-1, Akunoura-cho, Nagasaki City, Nagasaki Prefecture F-term (reference) 3G090 AA01 BA01 CB00 3G091 AA02 AA04 AA06 AA18 AB13 BA03 BA07 BA36 BA15 CA15 EA30 EA32 GB02W GB03W HA00A11D AB01 BA14X BA15X BB02 CC33 CD05 4D058 JA01 JB03 JB06 JB24 JB25 JB39 JB41 MA44 MA54 SA08 UA03

Claims (7)

[Claims] 1. A floating particle removing device for removing floating particles in an exhaust gas, wherein the exhaust gas is ventilated, and a collecting means for collecting the floating particles is provided inside a container body; An apparatus for removing suspended particulates, comprising: a cooling means for cooling the particulate removing means. 2. A floating particle removing apparatus for removing floating particles in an exhaust gas, wherein the collecting means is provided in a container body, and the exhaust gas is ventilated to collect the floating particles. An apparatus for removing suspended particulates, comprising: a catalyst solution attaching means for attaching a catalyst solution to the surface of suspended particulates collected by the means; and a cooling means for cooling the outside of the container body. 3. A floating particle removing apparatus for removing floating particles in exhaust gas, wherein the collecting means is provided inside a container body, and the exhaust gas is ventilated to collect the floating particles. A device for adhering a catalyst solution to the surface of the suspended fine particles collected by the means, and a cooling water spraying device for spraying cooling water inside the container body. . 4. The method according to claim 2, wherein the catalyst solution contains a catalyst containing at least one of an alkali metal and an alkaline earth metal, and the fine particles collected by the collecting means are discharged during exhaust gas ventilation. Catalytic combustion,
An apparatus for removing suspended particulates, comprising: 5. The method according to claim 1, wherein at least two of the fine particle collecting means are provided, and the collecting means alternately collects the floating fine particles in the exhaust gas. While collecting fine particles and burning the fine particles by the heat of the exhaust gas, the catalyst solution is attached to the fine particles collected by the other collecting means and dried, and then when the particles are collected again, the catalyst is removed. A device for removing suspended particulates in exhaust gas, which catalytically decomposes attached particulates. 6. An exhaust gas treatment system for purifying exhaust gas, comprising the apparatus for removing suspended particles according to claim 1, which is interposed in a flue of the exhaust gas and decomposes suspended particles in the exhaust gas. Exhaust gas treatment system. 7. A method for removing fine particles in exhaust gas, which removes fine particles in exhaust gas, wherein the fine particles in the exhaust gas are collected by a collecting means while cooling the internal combustion engine, and thereafter the collected fine particles are collected. A method for removing fine particles from exhaust gas, comprising attaching a catalyst solution to the surface and burning and decomposing the fine particles by passing or heating the exhaust gas.