KR20200062195A - Separation system of ship's flue gas desulfurization plant - Google Patents

Abstract

A separation system of a ship's flue gas desulfurization plant, said separation system-preferably using vertically upwardly directed flow components-droplets from flue gas flowing in the flow direction (R) and discharged through the discharge opening of the flue (11) is separated, and is formed in an elongate shape in the longitudinal direction (L), the longitudinal direction (L) comprises at least one thin plate (1) which is arranged transversely or inclined with respect to the flow direction (R), thin plate (1) includes at least one chamber (2) having an opening (2a) extending in the longitudinal direction (L), the openings (2a) are each on the side of the thin plate (1) facing the flow direction (R) Is placed.

Description

Separation system of ship's flue gas desulfurization plant

The present invention relates to a separation system for a flue gas desulfurization plant in a ship. This separation system, on the one hand, will require vessels equipped with these facilities to meet the requirements of the new offshore emissions regulations. On the other hand, this separation system will have to overcome the well-known problem of stack rain (discharging large amounts of droplets from wet stacks). In addition, such a separation system should take into account the recent decades of operating phase experience (in the direction of flue gas flow) to reduce and minimize the contamination of components involved after the droplet separator.

Flue gas from diesel ignited marine engines is mainly desulfurized to be discharged from the flue after a wet cleaning process. To this end, the flue gas containing sulfur is guided through the vessel located in front of the flue in the flue gas flow direction. In such a container, sulfur-containing flue gas is sprayed with sea water (suspension), and SO ₂ present in the flue gas is bound to the spray droplets of this suspension. Particularly large spray droplets, due to gravity, are placed under the inlet and collected in a sump for waste water to be cleaned for later processing steps, whereas small particle spray droplets are accompanied by gas flow.

The object of the present invention is to reduce the amount of such accompanying droplets.

The effective or planned new emission regulations aim at a significant reduction of solids in the flue gas, in other words, a reduction of fine dust, so another object of the present invention is to improve the separation effect.

Modern separation systems for flue gas desulfurization are currently installed in the upper region of the vessel (also referred to as the "cleaning head") in which flue gas channels or flues are connected in the direction of flue gas flow. Generally, this separation system is subject to flue gas flowing upwards vertically. It has been found that such a device is a preferred configuration for cost- and operational reasons.

The separation system separates the droplets from the flue gas flow and, in some cases, the dry solids, which in the flue gas flow are deflected several times using flow resistance in the separation system. At this time, droplets and solids in a dry state are exposed to centrifugal force. The centrifugal force can cause the flue gas to fail to follow its path and hit the flow resistance, which causes the deflection of the flue gas flow and is also referred to as a “collision body”. Through this, the droplets are separated from these impinging bodies, thereby being removed from the flue gas flow. Due to gravity, droplets and, in some cases, solid pieces are dropped into the container, through which they reach the gas flow or catchment tank again.

In the prior art, the separation system generally comprises an aggregate of plate-shaped bent deflecting bodies. In general, rigidly moored deflecting bodies are mostly configured to form channels through which flue gas flows. The purpose of this configuration is to cause strong deflection of the flue gas on the one hand and minimize the “blocking” of the flue gas path by flow resistance on the other hand.

The impingement body or deflection body is generally referred to as a "lamella", and the impingement body corresponds to a "thin plate separator" or just "thin plate". Conventional sheet metal from various manufacturers differs depending on the geometry, sheet spacing, deflection and design ("roof", "flat" or "horizontal" flow).

In conventional power plants, it has been experienced that so-called flue rain can be produced when the flue gas is guided into the flue after the flue gas desulfurization plant (FGD). This chimney storm is composed of large droplets containing a significant solids content (ash) and is acidic (slight acid content). On the one hand, this flue rain is due to the condensation of droplets from the saturated flue gas, which is cooled in the path through the flue and the droplets settle on the flue wall. In this position, droplets are swept out of the flue gas flow and are discharged from the flue.

To prevent this, it is known to use reheating in power plants. Reheating heats the flue gas and thereby vaporizes the residual droplets present in the flue gas, thereby preventing condensation of the saturated gas.

On the other hand, the chimney rainwater is created by sweeping away from the separation system. Sweeping means that the separation system does not function properly (contamination, misconfiguration, or excessive flue gas velocity) or that the cleaning droplets are swept away during cleaning of the sheet and pass through the separation system, leaving the droplets leaving the separation system at the outlet side. it means.

In the case of diesel-fired marine engines, the droplets of the chimney rainwater are on the one hand close to acidic because they contain sulfuric acid, and on the other hand these droplets contain a high solids content. Sulfuric acid arises from the combustion process in diesel engines. The sulfur-containing diesel was burned, and correspondingly, the SO ₂ content and the slight SO ₃ content were relatively high in the flue gas. This fluid is diluted sulfuric acid and correspondingly has high fracture and corrosive properties. The solids collected during washing reach the fluid and are mostly spilled, but are swept together at a low rate. Thus, these droplets scattering from the chimney and reaching the surroundings, on the one hand, cause significant visible contamination on the vessel wall and the vessel surface. On the other hand, these droplets are acidic and destructive, which damages and corrodes the ship's color and steel. These two effects are harmful for the ship. Pollution problems are very negative and cause deterioration, especially for passenger ships. The bigger problem is that the damage and corrosion effects of diluted sulfuric acid are a concern for ships.

In other words, the acidity of brimstone is negative and harmful for ships.

Through the experiments, it was confirmed that the intensity of the chimney rain is influenced by the washing cycle of the thin plate as much as possible, and more particularly, the final thin plate washing in the flue gas flow direction. It was confirmed that when the cleaning system was turned off, the large amount of chimney excellence that had existed was lost to an almost unrecognizable level.

This confirmation is consistent with measurements of the amount swept behind the sheet. It was confirmed that up to 100 times the amount of fluid was swept out during the final thin plate cleaning in the direction of flue gas flow, compared to the drive mode without cleaning. It has also been found that the size of the droplets increases significantly, especially during washing. Very large droplets were accompanied by this sweep.

That is, the effect on the chimney rain can be clarified not only by washing of the fluid volume, but also by the size of the droplets. In the normal drive mode (no washing), small droplets that are swept away by the separation system or small droplets (generated by condensation within the chimney) are not recognized as a chimney storm because these droplets are generally vaporized before reaching the bottom. On the other hand, large droplets produced by washing of thin plates or condensation in a stack are large enough to reach the bottom. These large droplets fall down to the surface below or behind the chimney, causing corrosion by acid content at this location and contamination by the solids being bound.

In addition, it is recognized because the droplets during washing are visible due to their mass. Individual droplets are ignored and not recognized. Of course, the large droplet mass is visible.

Analysis of driving situation

The link between the lamination process and the occurrence of chimney storms has not been recognized for a long time. The occurrence of chimney rainwater was regarded as "poor" separation and preventive measures have been taken as such. In fact, most "poor" separation was partly responsible for the occurrence of chimney storms. This is because the droplet separation system is not fully functioning and causes a significant discharge, and is partially poorly implemented or driven inefficiently.

An important cause of poor separation performance is frequent contamination of sheet metal. This pollution is particularly caused by poor combustion of diesel oil in engines. The oily component does not burn and is accompanied by flue gas as a soot or oil droplet containing oil. Then, these oily components are precipitated on the thin plate surface to emulsify the thin plate surface.

On the other hand, the emulsified thin plate functions very limitedly. The oil hinders the formation of a water film on the surface of the sheet. However, the water film is very important to absorb and bind the scattered droplets. On the other hand, when the droplets to be separated reach the emulsified surface, instead of being separated in or on the surface of the thin film, the droplets diverge and rebound into flue gas flow. So-called secondary sprays are produced. That is, the droplets that have just been separated off are bounced back into the flue gas and scattered further.

Therefore, oily contamination prevents the sheet from functioning properly anymore. The droplets are divided, not separated.

In addition, an important aspect is that the area provided for mounting the FGD in a number of ships is very limited. On the ship, all parts are very dense-all spaces are reserved for cargo or passengers, and the necessary functions are implemented in minimal space.

Task establishment

An object of the present invention is to provide a separation system that utilizes droplet collision as little as possible in an area for causing separation. Another object of the present invention is, on the other hand, to provide a separation system in which a thin plate can generally be moved and cleaned even during operation. In addition, preferably, the configuration of the separation system should minimize the consumption of space, minimize the amount of flue rain, and be minimized to the inevitable level.

The separator, the impact body or sheet, whose effect is due to the impact of the droplets, will quickly collect the oily components on the surface under the given environmental conditions, which are then scattered to produce a water film that absorbs the incoming droplets. Disturbs. Due to this, the separation function is significantly reduced. The basic principle of the collision droplet separator (as already mentioned) is that a water film is formed on the collision surface, and when the water film collides, the water droplets are absorbed and absorbed by the water film, rather than causing the droplets to become scattered and smaller to continue to scatter. Combined-preferably to prevent secondary spraying. The emulsified separator cannot form such a water film, so it cannot function properly. In other words, it is necessary to find an alternative solution that no longer requires water film. When impinging droplets are sprayed, this should preferably take place in a space where pressure is reduced or completely lost, so that secondary droplets are not introduced back into the gas flow again.

Such a colliding body or sheet should preferably be simple and ideally moveable while driving, so that it can be replaced and/or cleaned. The emulsification phenomenon is reduced by this cleaning and can preferably be kept at an approximate minimum level. Thus, for separation, the negative emulsification effect is reduced and ideally can be reduced to a minimum.

Preferably, the replacement of the thin plate should be able to be performed during operation to prevent the idle time of the diesel drive. The cleaning of the thin plate can be performed offline. At this time, the separation system should preferably be formed so that such exchange can be carried out without risk for the operator during operation.

In addition, the problem of the present invention is to keep the FGD as low as possible. In this case, low means that the height of the entire installation is minimized. The design height of the ship is limited, and the chimney cannot protrude at any height from the ship. In other words, the design height required for the separation system should be kept as low as possible, preferably minimized.

Finally, the problem of chimney excellence should also be minimized. The production of droplets from diluted sulfuric acid, which can lead to brimstone storming, is a result of the mounting of FGDs-as already mentioned. Brimstone excellence actually has three causes:

1. Function failure of sheet metal

When the thin plate no longer functions correctly, more and more fluid is transported and discharged within the stack. In other words, poor or emulsified sheet metal is a source of excellent brimstone.

2. Washing of sheet metal

On the one hand, the thin plate must be cleaned regularly to remove fine ash or other solids that form over the thin plate a coating that clogs the separation system over time and, on the other hand, increasingly degrades the separation. Of course, washing causes the side effect of causing the fluid to be discharged remarkably for a short time in the form of a chimney storm.

3. Condensate formation

The clean gas produced after passing through the FGD is, as is known, a hot saturated gas, for example from 50°C to 65°C. In addition, condensate is formed in the flue wall portion in a very short ship flue compared to a power plant, because the flue wall portion is generally 20°C to 50°C lower than the flue gas. The condensate-when a sufficient amount is formed-is swept out of the clean gas and discharged from the chimney in the form of a chimney stormwater.

These three production methods cause sulfuric acid superiority containing sulfuric acid and corrosive. The separation system according to the invention should preferably reduce all three of these production modes and minimize them as much as possible.

Solution according to the invention

The above-mentioned problems are solved at least in part by a separation system according to the invention. The separation system according to the invention comprises at least one thin plate which is elongated in the longitudinal direction, the longitudinal direction of the thin plate being arranged transversely or inclined with respect to the flow direction of the flue gas, and the thin plate is an opening extending in the longitudinal direction It includes a chamber having, and this opening is arranged on the side of the thin plate facing the direction of flow, so that at least a part of the droplets and the spray droplets swept together by the gas flow are directly reached in this chamber. In the chamber, these droplets collide with the chamber walls, but this does not cause the formation of secondary sprays that can be swept together by the gas flow-unlike the thin plates known from the prior art, since there is no gas flow inside the chamber. . In other words, due to the thin plate formed according to the invention, collisions are eliminated from the gas path, thereby preventing the formation and transport of secondary sprays.

In order to further enhance the separation performance for the purpose of preventing or at least reducing the chimney storm, a preferred embodiment of the separation system comprises one or more modules, each module comprising at least one, preferably a plurality of thin plates.

 More preferably, from the standpoint of as high a separation performance as possible, the module(s) are formed and arranged such that they respectively define an inflow surface facing the flow direction. In other words, the gas flow is preferably towards the inflow surface.

More preferably, in the development form of the separation system according to the invention, the module(s) are arranged such that these inflow surfaces extend transversely or inclined with respect to the flow direction.

In a much more preferred embodiment of the separation system according to the invention, at least one sheet metal is not mounted in a container of FGD which, when differently from the prior art flows when the flue gas flows into the flue gas channel or into the flue in front of the outlet, It is mounted in a stack. On the one hand, the design height of the container is significantly reduced on the one hand, for example, reduced by 1,000 mm to 2,000 mm, which meets the FGD space demand reduction requirement to be minimized as much as possible. In addition, when mounted in a stack, it is possible to replace the thin plate during driving. This is because, when replacing the thin plate, it is not possible to completely prevent leakage and flue gas leakage. This is a significant problem for the operator when the work needs to be done in a closed space where the container is located. However, by stacking in the stack, the area to be worked for the replacement of the sheet is stacked in the open area, and the work starts with the wind being influenced mostly outdoors. The influence of wind means that flue gas generated in some cases is immediately transferred by the apparent wind speed acting on the ship (the vector addition of actual wind and operating wind), so that there is no risk or at least no significant risk for the operator. Therefore, the thin plate can be replaced more frequently, so that the remaining problems of emulsification and contamination are reduced. In a shorter cycle, the thin plate can be removed and replaced with a preliminary thin plate (new and/or cleaned thin plate). The removed thin plate can be cleaned mechanically and/or chemically using a cleaning agent, for example. The following advantages are obtained with this "offline cleaning":

a) Reduce or eliminate major sources of chimney rainwater by omitting regular cleaning during operation.

b) In addition, by significantly reducing the negative effect of emulsification, the separation function of the thin plate is remarkably improved.

It is also very preferred that at least one sheet in the separation system according to the invention is arranged in the vicinity of the discharge opening of the stack. Through this, the problem of discharge of condensate is solved. The condensate formed in the wet flue is transported to the separator together with the flue gas, where it is separated before the flue gas is discharged from the flue.

In addition, the cross section of the chimney can be formed significantly larger in the vicinity of the discharge portion. This reduces flue gas velocity, lowers pressure loss within the separator and improves separation performance.

Significantly confirmed, in relation to the reduction or further prevention of chimney rain, a thin plate comprising:

a) a surface profile comprising regions formed at an angle from an alternating standpoint, preferably at a flat angle, and

b) at least one agent formed at an angle corresponding to the surface profile, preferably comprising two edge regions each connected to one middle region and opposite edges of the middle region, each terminating at the outer edge; As the first and second longitudinal profiles, at least the first and second longitudinal profiles each extend in one region of the surface profile using their intermediate regions, where the edge regions of the longitudinal profile extend preferably parallel to the surface profile The area is spaced apart and fixed offset in a manner that is spaced apart, and at least the outer edge of one of the edge regions of the first longitudinal profile includes a distance to the outer edge of the edge region of the second longitudinal profile, thereby At least one first and second longitudinal profile, wherein a chamber is formed between the regions and the edge regions, and an opening is formed between both outer edges of the edge regions.

A special function of this chamber separator is that the droplets do not hit resistance in the flue gas flow, but rather scatter into the chamber and only hit the plates in space at this location. Thereby, the secondary droplets produced by these collisions do not bounce back into the flue gas flow, remain in the chamber and separate at this position. There is no sweeping gas flow that can cause secondary droplets to be transported further.

The negative function of oil painting is also eliminated as much as possible. Emulsification, of course, prevents a water film that can absorb colliding droplets from being formed on the surface. This significantly increases the separation of secondary droplets. This is not important because there is no gas flow absorbed in the chamber. Secondary droplets are subsequently swept together by the accompanying droplets or fall by gravity-but generally do not reach the road gas flow.

Very preferably, at least two longitudinal profiles are fixed to both sides of the surface profile in such a thin plate.

By separating the tubular separator at the head of the FGD vessel, the separation system is further improved and the cleaning cycle can be lengthened. This tubular separator has the function of reducing the amount of droplets in the flue gas on the one hand and collecting and combining these oily components before the oily components reach the original separator on the other hand.

In the drawings, two embodiments of a separation system pertaining to the prior art, one embodiment of a thin plate used in a separation system according to the invention and a separation system according to the invention-are shown only schematically. The drawings are as follows:

1 is a side cross-sectional view of a separation system belonging to the prior art.
2 is a perspective view of a thin plate used in such a separation system.
3 is a perspective view of a thin plate used in the separation system according to the present invention.
FIG. 4 is a diagram of a module including a plurality of thin plates of the method shown in FIG. 3.
5 is a side cross-sectional view of a first embodiment of a separation system according to the invention.
FIG. 6 is a view corresponding to FIG. 5, showing another embodiment of a separation system according to the present invention.

The separation system belonging to the prior art, shown in FIG. 1, comprises a vessel 7 in which the flue gas flow 9 flows through and is directed in the flow direction R, ie from bottom to top. To this end, the container 7 includes a side inlet E. Under the side inlet (E), the container (7) includes a water collecting part (T), and the water collecting part serves to collect fluid. The discharge portion U is provided at the lowest position of the water collecting portion T, and the fluid collected through the discharge portion is discharged and may be supplied for reuse or cleaning in some cases. The flue gas in the container 7 flows through the spray assembly 5, and by using the spray assembly, a fluid in the form of a spray mist is supplied for bonding of SO ₂ or SO ₃ and cleaning of solids. Droplets absorbing SO ₂ or SO ₃ and solid pieces are formed. The droplets are cleaned using a droplet separator placed behind the spray assembly in the direction of flow of the flue gas. The droplets mostly fall downward in the container 7 due to gravity, and collect in the collecting part T. However, some of the droplets are swept upwards with the flue gas into the flue (S) connected to the container (7), and at least partially discharged through the flue opening (10) of the flue. For example, in order to be able to measure the water content in the stack, the content of harmful substances, and the like, a test port 8 is provided that enables the introduction or connection of a corresponding measuring device or measuring probe.

From the prior art, a droplet separator is known which consists of a plurality of separator thin layers arranged side by side, such a separator thin plate consisting of curved layers of plain material, for example-as schematically shown in FIG. 2. A plurality of layers of sheet metal are assembled for the separation assembly through sidewalls not shown in the drawing, and can be assembled for a roofed or V-shaped or planar module together with adjacent separation assemblies.

When such a thin plate is used to clean the exhaust gas of a marine diesel, it has been confirmed that unexpected flue rain may occur, since the droplets cannot be separated from the emulsified surface and bounce back into the gas flow as a secondary spray. In order to reduce the occurrence of chimney rainwater, the separation system according to the invention comprises a thin plate 1, the thin plate comprising at least one chamber 2 having an opening 2a extending in the longitudinal direction L of this thin plate. Includes. One embodiment of such a thin plate is shown in FIG. 3. This embodiment preferably comprises a surface profile 14 with areas 15 formed at an angle from an alternating standpoint at a flat angle. It includes one central region 18 and two edge regions 19 and 19', which are respectively connected to the opposite edges of the central region and terminate at the outer edges 20 and 20', respectively. The at least one first and second longitudinal profiles 16, 17 formed in this fold form, in their respective regions 15 of the surface profile 14 using their central regions 18, the edge regions of the longitudinal profile (19, 19') are offset and fixed to be spaced apart by a distance D relative to the parallelly extending regions 15 of the surface profile 14. At least the outer edge 20 ′ of one of the edge regions of the first longitudinal profile 16 is at a distance A relative to the outer distance 20 of the edge region 19 of the second longitudinal profile 17. By including, a chamber 2 is formed between the regions 15 of the surface profile 14 and the edge regions 19', 19 on both sides, and both outer edges of the edge regions 19', 19 An opening 2a is formed between 20' and 20'. Two longitudinal profiles 16 and 17 are fixed to both sides of the surface profile 14, respectively. The separator including the thin plate formed in this way was found to significantly reduce the formation of chimney rainwater. This means that at least a portion of the droplets collide with the outer surface and do not form a secondary spray mist, the secondary spray mist generated in the case of collision at the wall of the chamber reaching the chamber 2 and in some cases flue gas flow 9 ).

As shown in Fig. 4, the plurality of thin plates 1 are preferably parallel to each other and more preferably can be assembled for a module by equidistant arrangement, preferably transverse to the flow direction R Alternatively, the modules may be assembled to be disposed in the separation system in such a way as to form an inclined inflow surface F.

In the first embodiment 100 of the separation system according to the present invention schematically illustrated in FIG. 5, unlike the prior art, the droplet separator 6 is not disposed inside the container 7, but in the stack S itself, Here, it is arranged in the vicinity of the discharge opening 10 of the stack. The spray assembly 5 is located close to the upper end of the container 5. The module 13 including the plurality of thin plates 1 shown in FIG. 4 is arranged flat so that the inflow surface F extends in the transverse direction with respect to the flow direction R of the flue gas.

A replacement receiving portion 21 is provided for fixing the module 13 in the stack S, and the replacement receiving portion is formed so that the module 13 can be replaced while the ship diesel is driven. The possibility of replacement during the driving is possible, in particular, because the module is disposed inside the stack, and in some cases, gas generated in the area of the replacement receiving portion 21 is discharged directly to the outside during the replacement procedure.

In the second embodiment 200 of the separation system according to the invention shown in FIG. 6, unlike the first embodiment 100 of the separation system according to the invention, the module 13 is-the direction of flow of the flue gas In relation to-each is arranged to form a V-shaped or inverted V-shaped ("roofed") with adjacent modules. The inflow surface F of the module 13 extends obliquely with respect to the flow direction R of the flue gas. In addition, a multi-layered tubular separator 22 is arranged in the upper region of the container 7, also referred to as the "absorption head". The tubular separator has the function of reducing the amount of droplets in the flue gas on the one hand and collecting and combining these oily components before the oily components reach the module 13 on the other hand. With the tubular separator, the separation performance of the separation system is further improved, and the cleaning cycle can be lengthened. Otherwise, since this second embodiment 200 of the separation system substantially corresponds to the first embodiment, the related description is omitted.

100, 200 separation system 1 sheet
2 chamber 2a chamber opening
3 Chimney outlet 4 Replacement means
5 Spray assembly 6 Droplet separator
7 container 8 test port
9 flue gas flow 10 flue outlet
11 droplets 12 openings
13 Module 14 Surface Profile
15 Area of the surface profile 16 First longitudinal profile
17 Second longitudinal profile 18 Central area
19, 19' edge areas 20, 20' edge
21 Replacement housing 22 Tubular separator
A street D street
E Inlet F Inlet
L Longitudinal direction of separator R Flue gas flow direction
S chimney T catchment department
U outlet

Claims (10)

Separation system (100, 200) of the ship flue gas desulfurization equipment,
The separation systems 100, 200-preferably using vertically upwardly directed flow components-droplets from flue gas flowing in the flow direction R and discharged through the discharge opening 10 of the flue S (11),
It comprises at least one thin plate (1) formed in an elongate in the longitudinal direction (L), the longitudinal direction (L) of the thin plate is arranged transversely or inclined with respect to the flow direction (R),
The thin plate 1 includes at least one chamber 2 having an opening 2a extending in the longitudinal direction L,
The openings (2a) are arranged on the side of the thin plate (1) facing the flow direction (R), respectively, separation system (100, 200). According to claim 1,
Separation system comprising at least one module (13), the module or modules (13) having at least one sheet (1). According to claim 2,
Separation system, characterized in that the module or modules (13) respectively define an inflow surface (F) facing the flow direction. The method of claim 3,
The module or modules (13) is a separation system characterized in that the inflow surface (F) is arranged to extend transversely or inclined with respect to the flow direction (F). The method according to any one of claims 1 to 4,
Separation system, characterized in that the at least one thin plate (1) is disposed in the stack. The method of claim 5,
The at least one thin plate (1) is disposed in the vicinity of the discharge opening (10) of the chimney, and the discharge opening preferably comprises a cross-section that is increased than the cross-section of the chimney. The method according to any one of claims 1 to 6,
Separation system, characterized in that at least one, preferably all thin plates (1) are arranged to be replaceable from the outside. The method according to any one of claims 1 to 7,
The thin plate (1)
a) a surface profile 14 having regions 15 formed at an angle from an alternating standpoint, preferably at a flat angle, and
b) each comprising one central region 18 and two edge regions 19, 19' connected to opposite edges of the central region, each terminating at the outer edges 20, 20',-preferably -Comprises at least one first and second longitudinal profiles (16, 17) angled corresponding to the surface profile,
At least the first and second longitudinal profiles 16, 17, respectively, in one region 15 of the surface profile 14 using the central region 18 of the longitudinal profile, respectively, the longitudinal profiles 16, 17 ), the edge regions 19, 19' of which are offset and fixed in such a way that they are spaced apart by a distance D with respect to the regions 15 which extend preferably in parallel of the surface profile 14, At least the outer edge 20' of one of the edge regions 19' of the first longitudinal profile 16 is relative to the outer edge 20 of the edge region 19 of the second longitudinal profile 17. By including the distance A, a chamber 2 is formed between the regions 15 of the surface profile 14 and the edge regions 19', 19 on both sides, and the edge regions 19' , 19) the separation system, characterized in that the opening (2a) is formed between both outer edges (20', 20). The method of claim 8,
Separation system, characterized in that at least two longitudinal profiles (16, 17) are respectively fixed to both sides of the surface profile (14). The method according to any one of claims 1 to 8,
The flue gas desulfurization plant comprises a container 7 connected to the front of the flue S when viewed in the flow direction R of the flue gas, and preferably a multi-layered tubular separator 22 in the container. Separation system, characterized in that provided.

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