DD232435A5 - DRIP CUTTER FOR CUTTING DROPS FROM A GAS FLOW - Google Patents

Abstract

The invention relates to a mist eliminator for separating drops from a gas stream. The mist eliminator can be used in Naturzug- and Ventilatorkuehltürmen advantage in that both a considerable saving in chimney height and fan drive power is achieved. While the object of the invention is to provide a separator which achieves a good separation efficiency when the pressure loss is reduced, the object is to remove as much as possible, ie. H. also small and floating drops, with a high degree of separation with as little pressure loss as possible. According to the invention, the object is achieved in that the droplet separator has parallel profiles, between which flow channels are formed with constrictions and deflections for the separation of droplets. In order to reduce the pressure losses with unchanged or even improved separation effect, a drop acceleration section is provided before the first deflection. Fig. 8

Description

Berlin, November 29, 1984

AP B Ol D / 266 530/4 64 292/26

Droplet separator for separating drops from a gas flow

Field of application of the invention

The droplet separator according to the invention can be used in natural draft cooling doors and allows a considerable saving in chimney height. When used in fan cooling towers, a considerable saving in fan drive power is achieved since the droplet separators according to the invention can be flown at a lower speed with the same separation efficiency of the profiles.

characteristics the known technical solutions

Such a mist eliminator is known for example from DE-OS 15 44 115.

In this case, for the deposition of the liquid droplets of gas flows, as shown in Fig. 1, known parallel and symmetrical to a plane E bent profiles made of sheet metal or plastic provided a double deflection of the flow between entrance level E, - and exit plane E. with one Effect flow channel constriction. The profiles have consistent strength over the flow channel length. The flow laden with droplets is accelerated in the constrictions. The larger a drop, the less he can follow the diversion. The drops are carried out of the curve and hit the separation surface of a profile. There are three types of

-5.0EZ.1984 * 2i622i

Effect between droplets and separation surface occur:

a) the drops are captured by the surface;

b) the drops are reflected;

c) the drops burst and are partly captured, partly reflected.

With the disturbing the droplet deposition process reflection is to be expected in particular when the drops approach approximately tangential to the separation surface.

Since in the known droplet the drops due to their inertia can not follow the increase in velocity caused by the narrowing over a short distance, the droplets in the deflection zone do not reach the high velocity of the gas phase, which would be advantageous for droplet deposition. In order to achieve a satisfactory degree of separation, the flow velocity and / or the deflection must be increased, which leads to both high pressure losses.

Object of the invention

The object of the invention is to provide a separator of droplets from a gas flow, which achieves a good separation efficiency when reducing the pressure loss,

Explanation of the essence of the invention

The invention is based on the object of

separators for separating droplets from a gas flow, wherein flow channels are provided by means of profiles with constrictions and deflections, on whose walls the droplets are deposited, and which are oriented so that the separated liquid on these walls to the inlet of the flow channels under the effect of Gravity can flow out to create whichever possible, d. H. Even small and floating drops, with high separation efficiency with the lowest possible pressure loss separates

This object is achieved in that provided between adjacent profiles before the first deflection per a drop acceleration section and is dimensioned such that at least small drops are accelerated at the entrance to the deflection to a speed that is only slightly different from the gas velocity at this point is.

According to the invention, the strøraungsquerschnitt is reduced in the region before the first deflection. This increases the speed of the gas phase. The drops are accelerated from this to a high speed before they reach the area of the first "deflection". An acceleration of the drops before the first deflection, d. H. in the inlet region of the flow channel, was contrary to the fact that such an acceleration in view of the back to the inlet and from there in large drops peeling separated liquid is unfavorable. "Above this prejudice existing for experts of the art, the invention continues with surprising success.

With a mist eliminator according to the invention, reductions of the pressure loss between 20 and 40 % without deterioration of the separation efficiency can be achieved in comparison to the previously customary droplet separators. This allows, for example when using the new mist eliminator in Naturzugkühltürmen a considerable saving in chimney height and when used in fan cooling towers considerable savings in fan drive power, because the droplet can be flowed according to the invention with the same separation efficiency of the profiles at a lower speed *

According to a preferred embodiment of the invention, the drop acceleration section with approximately constant or substantially continuously narrowing flow cross section is preceded by a gas acceleration section. Advantageously, a gas acceleration section with rapid reduction in cross section of the flow channel and subsequently in the flow direction is the drop acceleration section with essentially constant or substantially continuously narrowing flow cross section formed between two adjacent profiles,

Conveniently, the length of the gas acceleration section is about 0.2 to simple the length of the drop acceleration section, in the kurzerr gas acceleration section, the gas is quickly brought to a high speed »while the drops due to their much greater inertia their speed or only slightly increase.

In the drop acceleration section, which of course can also be configured to further increase the gas velocity "" z, "B. due to their flow resistance, the droplets are accelerated by the faster gas phase before the droplets get into the first deflection. This is advantageous for droplet separation because faster droplets tend to maintain their direction, ie they are thrown off to the pressure sides of the deflection regions and because they impinge on the profiles with larger angles, so that droplet reflection is less to be feared. In addition, with low speeds the same separation efficiency can be achieved as before, resulting in lower pressure losses. A deflection is sufficient, although several successive diversions can increase the separation efficiency.

In order to further reduce the pressure loss, according to a further important embodiment of the invention, it is provided that the thickness of the profiles in the direction of the outlet plane of the flow channels, starting with the first deflection to form diffusers, is reduced with a diffuser angle between 4 ° and 12 °.

One difficulty is the safe derivation of the water films that form on the droplet as the deposited droplets, it must be avoided that small drops are taken back by the gas flow again.

For this purpose, according to a further feature of the invention

provided that the profiles are provided with outgoing to the entrance level out strains and branches for the separated liquid; which transfer the deposited as a thin film liquid into thicker individual strands and drain without the risk of renewed entrainment by the gas flow from the edges of the profiles or »drain.

In order to further improve the separation efficiency, it is provided according to a further feature of the invention that each drop acceleration section to the direction of flow, the first deflection reinforcing at an inclination angle not greater than 30 °, preferably between 5 ° and advantageously is slightly curved.

inclined at 30 °, preferably between 5 ° and 20 °, and that

The further embodiment of the invention provides that, in the drop acceleration section, the one profile side convexly bulges into the flow and the other profile side is essentially flat. The drop acceleration section should be slightly curved between the exit directed in the outflow direction and the exit provided at the first deflection,

In such a configured mist eliminator according to the invention, a sufficient distance of the flow velocity to the so-called "Durehbruchsgeschwindigkeit", above which the-deposited liquid Filra contrary to the acceleration of gravity is taken to the trailing edge of the Abscheidefläche ensured and nevertheless a very low pressure loss realized ♦ This is due to the fact that the drop acceleration section is designed so that the

Drops are ejected at a more favorable angle to the first separation surface.

The profile thickness in the droplet acceleration section is advantageously in the range of 0.2 to 0.6 times the center distance of two adjacent profiles, while the length of the droplet acceleration section is preferably approximately 0.5 to 2 times the center distance of two adjacent profiles.

For the purposes of the invention, it is furthermore the case that the predetermined maximum profile thickness is essentially constant over the length of the droplet damping section. It is also possible to design the cross section of the profiles asymmetrically *

The slightly appearing deflection of the droplet paths in the drip accelerating device has the consequence that the angle of inclination of the first separating surface to a plane parallel to the entry plane of the droplet separator may be chosen to be relatively large without the angle of incidence on the first separating surface required for efficient separation too small is »A large angle of inclination is advantageous because the flow is then to deflect the outlet of the droplet only relatively little, which in turn leads to a reduction in pressure losses»

If a particularly high degree of separation is to be achieved with a mist eliminator, then there is a further embodiment

the invention ^ the possibility ^ that adjoins the Abscheidefläche behind the first deflection at least a second deflection with subsequent further Abscheidefläche »The realization of this idea brings without the slight inclination or curvature of the first drop acceleration section an improvement in the separation efficiency.

It is also advantageous if the exit send the profiles are thickened. This makes it possible to align the Abscheideflächen at a favorable angle to the approaching drops. This design also has the advantage "that the mist eliminators are accessible when placing boards across the exit edges. This is advantageous, in particular in the application of the droplet separators according to the invention in cooling doors.

de According to the size distribution of the drops, it may be advantageous to interpret the second separation stage not only for trapping reflected drops, but in principle for the deposition of smaller drops * This can be done according to a further feature of the invention in that the flow channel in the area behind the first and / or has a constriction behind each further deflection for creating a further drop acceleration section. In this case, it is favorable to choose the radii of curvature at the second deflection smaller than at the first, in other words to divert the flow more strongly, in order to produce sufficiently large centrifugal forces, which are required for the deposition of the smaller drops.

It should be noted that the radius of curvature on the concave profile side at or at each turn is less than or equal to about 0.25 times the center distance of two adjacent profiles, and / or the radius of curvature on the convex profile side at the or each turn is greater is equal to about 25 times the center distance of two adjacent profiles.

This results in particular advantages for the drainage due to a more favorable shear stress distribution on the profiles.

The previously treated mist eliminators are for use in countercurrent, d. h * at opposite to the outflowing liquid gas flow determined. The profiles are therefore to be installed so that the separated water flows back to the entrance of the flow channels formed between the profiles, z. B, with the profile longitudinal direction horizontal and the profile transverse direction vertical. Under conditions of cross-flow, i.e., "h _# transversely flowing to the effluent gas stream is separated liquid, an appropriate transformation required z. B. with safety grooves (DE-OS 21 46 205, DE-AS 22 51 173, DE-OS 23 47 984) or projections (DB-OS 22 33 480) on the Abscheideflächen to the separated water across the gas flow * d _# H. to flow in the longitudinal direction of the Profili.

Hit the invention is to be optimized in terms of pressure loss and filtration efficiency even such a mist eliminator. According to another aspect of the invention

is to a mist eliminator for separating drops from a gas flow, wherein profiles are provided with constrictions and deflections provided flow channels, on whose walls the droplets are deposited and which are aligned so that the separated liquid substantially transverse to the main flow direction on these walls can flow under the action of gravity, wherein between adjacent profiles a drop acceleration section is formed in the front deflecting front and catch grooves are arranged on the or each following a deflection separation surface, according to the invention provided that the maximum profile thickness of each profile about 0.2 to 0.6 times the center distance of two adjacent profiles is that the length of the drop acceleration path is about 0.5 to 2 times the center distance and that the catch grooves are arranged on the Abscheideflächen that their lip tip in Ström Seen in the direction of movement have a distance from the previous deflection between 1/4 and 2/3 of the length of the deflection surface following the Abscheidefläche.

This embodiment of the droplet separator according to the invention leads to a considerable improvement of the separation effect even without the above-described slight inclination or * curvature of the droplet acceleration section before the first deflection *

An advantage of this embodiment of the invention is that even reflected drops are captured by the catch grooves. The catch grooves lie in a range of

a jet of water for cleaning purposes is still well achieved "This is of particular interest when the drops are loaded with crust-forming substances, as is the case for example with flue gas scrubbers»

exemplary

The invention will be explained in more detail below with reference to exemplary embodiments with reference to schematic drawings.

1 shows a section through two adjacent profiles of a known droplet separator;

2 shows a section through two adjacent profiles of a droplet separator according to the invention;

3 shows a section through a modified profile according to the invention;

Fig. 4: a partial view of the profile according to Fig. 3;

5 shows a stage of the production of the profile according to FIG. 4,

6 shows a section through two adjacent profiles of a modified droplet separator according to the invention;

Fig. 7a and Fig. 7b: edge parts of Abscheideflächen the

Tropfenabscheiders of Figure 6, wherein flow phenomena are shown, which occur in the operating state;

Fig. 8 is a cross-sectional view of adjacent profiles of a two-stage droplet separator according to the invention, showing two alternative profile constructions;

9 shows a section through adjacent profiles of a droplet separator modified with respect to FIG. 8; FIG. and

10: a section through adjacent profiles of a further embodiment of a droplet separator according to the invention »

The profiles shown in the figures continue in the direction perpendicular to the plane of any length and always consistent cross section.

According to FIG. 2, each profile 1 has a rounded nose N which adjoins in the entry plane El and has a continuously extending cross-section up to a maximum profile thickness s. The length a at the nose N in the flow direction is approximately between 0 2 times to Ifachen of length b the following, in Anströmriehtung extending drop acceleration section II, whose length b in turn is in the range between about 0.5 to 2 times the center distance t.

The maximum profile thickness s in the drop acceleration section II remains approximately constant over the length b and is advantageously in the range of 0.2 to 0, times the center distance t.

The center distance t is at one for installation in

Cooling towers suitable construction, for example, about 40 ram, while the overall profile height »consisting of the sum of the lengths θ; b; c; d, about 150 mm * These numerical values are only intended to illustrate the actual profile dimensions by way of example.

The mean angle sL of the first deflection should be between 20 ° and 70 °. The vVerte for the lengths c; d result essentially from the above-mentioned lengths a; b, the maximum profile thickness s, the center distance t and the maximum deflection angle oC and the diffuser angle ß «

In the plane E3 sets a flow channel section in the form of the first deflection III of the flow channel on »From this plane E 3, the wall thickness aer hollow profiles is continuously reduced, so that the narrowing of the flow cross-section of the plane E3 to the plane E4 is not too large. In the plane E4 perpendicular to the flow path, the first deflection III, the maximum deflection angle ei between the flow cross sections in the planes E3 ends; In the example shown, E4 is 45 · This can, as stated »be in the range between approximately 20 ° and 70 °,

Gas and small drops have approximately the same velocity Vg ₀ in the plane EO in front of the entrance plane El; v _T0 "in the plane E2, the gas is due to the said first convergence performing gas acceleration section I ν to a much higher speed accelerates _β2 than the speed Vy ₂ ^ ^he is drop, Ia drop acceleration section II, the drop of the faster gas molecules

k accelerated by shock interaction so that they have reached in the plane E3 almost the same speed v__ as the velocity v _{Q3 of} the gas. The drops follow due to the high impact of the diversion IXI few but describe differing sbahnen of the gas flow, dashed lines in Fig. 2, drawn by drawn drop paths that guide the drop on the pressure side D of the profiles under a reflection largely avoidable incident angles "Thus, Most of the drops, including small and floating drops, are separated from the gas flow.

Following the plane E4 begins a divergent flow channel section in the form of a diffuser IV which forms a gentle second deflection V in the opposite direction to the first deflection III. In this way, the gas flow in the exit plane E5 leaves the flow channel only at a small angle, ie " H. approximately parallel to the entrance flow direction in the plane Ely at the speed v _G5 which is less than the velocity v _Q. In the narrowest cross-section in the plane E4 is, The expansion of the diffuser IV is achieved by continued reduction of the profile wall thickness and by the gentle second deflection V »The diffuser angle ß lies in the range between 4 ° and 12 °»

The serving as a separator profile 1 according to FIG. 2 can be installed with different inclination with respect to the vertical »An installation angle range A is indicated in Fig. 2 between about O and 120» In the installation position

If the drop falls below this angle, the separated liquid could collect in the depressions formed by the pressure sides D, ie it would no longer move in the direction of the noses N _1, d, h opposite the direction of flow can drain away.

FIGS. 3 and 4 show a modified embodiment of the profiles 1.

The modification consists mainly in that the gas acceleration section formed as the first constriction I and the drop acceleration section II are replaced by a common acceleration section V for gas and droplets. In this acceleration section V ¹ , the profile walls extend conically up to the plane ES to form a nozzle section , in which the first reversal III begins. The profile or »flow channel training is from here the same as in Fig. 2 and not described again. For the profiles 2; 3, the gas is accelerated more gently in the acceleration section V * than in the gas acceleration section I according to FIG. 2. The gas therefore does not contribute so much to the drop acceleration as in the drop acceleration section II according to FIG. 2, at the entrance of which the gas already accelerated to a high speed · - '

Dia Fig * 3 and 4 show a complementary feature that expediently realized in the profiles of FIG. 2, but dor * is not drawn · Then are gutters for the

- IS -

separated water with trunks 10 and branches 11 branched opposite it; 12 imprinted on both sides in the profiles 1. The trunks 10 open at the noses N, the profiles of "The width e of the trunks and branches is between about 4 and 10 mm and the depth h approximately between 0.5 and 2 mnw The inclination angle " Ϋ of the branches 11, 12 is in Range between about 10 ° and 30 °.

The branches 11; 12 are provided on the pressure side D of the profiles advantageously in the separation region, d, h * beyond the plane E3 or »the beginning of the first deflection III * In contrast, the first branch 11 on the suction side S _{# is} preferably already before the first deflection III, in Area of drop acceleration range II; V ¹ to derive the already isolated in this area by reflection from the pressure side D reaching droplets.

Fig. 5 shows the impressing of serving as gutters trunks 10 and branches 11; 12 in a profile 1 according to Fig * 2. The profile 1 is preferably immediately after the extrusion through two heated rollers 20; 21 out, which have the "negative" of the drainage troughs each of the suction side S or, the printed side D stamped on its surface. The counter-rotating rollers 20; 21 thus emboss the troughs in a single operation both in the suction side S and in the pressure side D during the passage of the profile 1.

The profile design according to FIG. 6 differs from that according to FIG. 2 in the following respect:

In the drop acceleration section II, each profile is weak starting from a mean inclination angle γ = 0 ° in the entry plane El to the plane E3 of the deflection to the direction of flow and curved so that the first deflection is amplified. The average angle of inclination ft is advantageously about 12 in the embodiment shown. It can assume a value of up to 30, depending on the requirements. The side of the profile 3 is arched into the flow channel »while the side of the profile 2 is substantially planar. Even though the profiles of the drop acceleration section II are also uncurved at the angle of inclination . can be inclined, an arrangement with an inclination angle f> = 0 in the entry plane El and subsequent weak curvature is preferable in order to achieve optimum flow conditions *

The accelerated up to the level E3 drops to gas velocity drops are deflected less than the gas flow in the first deflection II and meet at an angle cf on the Abscheidefläche Al on. This angle d ~ is due to the inclination of the inclination angle ^ * of the drop acceleration section II larger and thus cheaper than in the profiles of FIG, 2 _t so that drop reflection is more effective than with the profiles of FIG, 2 avoided.

The droplet acceleration section II expediently has a length of approximately 0.5 to 2 times the center distance t of two adjacent profiles. The slightly appearing deflection of the droplet path in the acceleration section V "makes it possible to adjust the angle der of the separation surface Al.

to choose relatively large over a plane E without the angle <f required for efficient deposition becoming too small. A large angle ε is advantageous because the flow in the direction of the outlet of the droplet eliminator only needs to be deflected relatively little, which helps to prevent the pressure loss.

At the serving as a deflection and separation line deflection III closes as in the profiles 2; 3 of Fig. 2 a weakly curved path of the diffuser IV, in which the speed energy is largely recovered «The desired diffuser angle ß can be adjusted by appropriate dimensioning of thickening Vl at the ends of the profiles. Above the just cut off thickenings V1, planks can be laid in the plane E5, which make the droplet separator passable.

In the droplet separator according to FIG. 6, the droplets strike the first separation surface A1 at a favorable angle ff and with a flow velocity so dimensioned on the first separation surface A that droplet reflection is largely avoided. The following design features also contribute to this: The radius of curvature τ _Λ , on the concave profile side in the first deflection III, is comparatively small, namely less than or at most equal to approximately 0.25 times the center distance t. The radius of curvature r ₂ * is greater than the chosen value chosen in order to minimize the deflection losses of the gas flow and to avoid Übergesohvvigkeiten. The rounded radius of curvature r * _Λ on the concave

Profile side is retracted by the depth h with respect to the drop acceleration distance II, wherein advantageously h ss (0.05 to 0.2) _# t is selected. This embodiment largely prevents the droplet reflection favoring, approximately tangential impact of the drops on the Abscheideflächen largely *

At a small center distance t of the profiles, the average velocity of the gas phase in the path of the deflection III is reduced compared to the velocity in the drop acceleration distance II. This tendency weakens with increasing center-to-center distance t and finally reverses. * With the same profile, different results can be achieved depending on the choice of the center distance t. It is therefore important to choose the center distance t adapted to the respective Abseheidungsaufgabe.

In FIGS. 7a and 7b, sections of the separation surfaces A, eg Al in FIG. 6, are enlarged. The separation surfaces A are covered with liquid films formed from the trapped drops. These liquid films have a wavy surface structure. According to where a droplet T strikes the shaft, different effective angles of incidence result, which may differ considerably from the angle "T" with the wall surface itself. This can lead to occasional reflections of drops T, as illustrated in FIG. 7a. If a droplet Tg strikes a droplet T ₁ which has not yet been completely absorbed by the liquid film, then, in rare cases, a reflection of droplets T ₂ can also be expected according to FIG. 7b.

The droplet separator shown in Fig. 8 is formed in two stages to achieve higher separation efficiency. To this end, adjoining a first deflection and Abscheidestrek- 'ke serving deflection III with a first Abscheidefläche Al serving as a second deflection and Abscheidestrecke deflection V with a second Abscheidefläche A2, which is angled in the opposite direction sense to the first deflection III. The radii of curvature r _{o o o Λ} jr at the second deflection V are selected to be equal in this case, as the curvature radii r, ,,; τ _{Λ o} at the first deflection III, as well as the depth h on the concave profile side of the second deflection V, in the path of the second deflection V are deposited on the first separation surface Al not yet deposited drops at the second Abscheideflache A2.

Subsequent to the path of the deflection V, the profiles, as shown in dashed lines, be formed and thereby form the extensions of a diffuser IV with a diffuser angle ß.

In the embodiment shown in solid lines in the end portions of the profiles is again possible to place boards on the end edges of the profiles in order to make the mist eliminator walkable.

The embodiment according to FIG. 9 shows a profile configuration which basically corresponds to that according to FIG. 8. It is different that a second drop acceleration section VI in the form of a constriction adjoins the first diversion III serving as a deflection and separation path.

This constriction is achieved by increasing the direction of flow channel wall thickness of the profile. The constriction then goes into - the second serving as Uralenk- and separation line deflection V on "as described with reference to FIG. 8, designed and will not be explained again here." Another difference is that the side facing away from the flow side of the profile convex, that is, curved into the flow channel, is curved * while the side of the profile 2 is substantially flat or slightly concave arched ·

In the embodiment according to FIG. 9, the predominant portion of the larger drops is deposited in the first stage d, h * at the first deposition surface Al, while the reflected and smaller drops are deposited at the deposition surface A2 in the second deposition stage.

The embodiment of Fig. 9 has advantages in terms of drainage, this can be explained with the distribution of the wall shear stress 2%. The low wall shear stresses 9 "," on the upper side of the profile opposite the separation surface Al allow uninterrupted flow of the water separated in the second stage at the separation surface A2 back into areas with lower air velocities.The discharge of separated water is in any case facilitated in the first stage, because here only larger drops are to be captured and therefore can be worked with smaller air speeds,

Oe according to the drop size distribution and the desired degree of separation can also be a multi-stage execution of the

Fig. 8 or 9 be useful, but is not shown as.

FIG. 10 shows an embodiment with a greatly inclined or vertical separation of the profile longitudinal direction. This is indicated by the arrow for the gravitational acceleration g in FIG. 10 pointing perpendicular to the plane of the drawing.

The embodiment according to FIG. 10 is similar to the profile design according to FIG. 2 except for catch grooves F with lips L ₁ whose lip tip LS is a distance of 1/4 to 2/3 of the length 1 'of the separation surface Al from the vertex of the first deflection point on the concave profile side or the pressure side of the profiles has "of the catch grooves F also reflected drops are captured. The catch grooves F are in a range which can be achieved well from the inlet side by means of a water jet for cleaning purposes. This is particularly advantageous when using the droplet separator in a flue gas scrubber, where the droplets are loaded with crust-forming substances.

Claims (6)

invention claim 1 » drop separator for separating drops from a gas flow, wherein formed by profiles with constrictions and deflections flow channels are formed, on whose walls the droplets are deposited and which are aligned so that the deposited liquid on these walls to the inlet of the flow channels under effect Gravity can flow, characterized in that between adjacent profiles (1) before the first deflection (III) per a drop acceleration section (II) is provided and dimensioned such that at least small drops at the entrance to the deflection (III) to a speed ( V_), which is only slightly different from the gas velocity (V _G ). 2 «Droplet according to item 1, characterized in that a gas acceleration section (I) with rapid reduction in cross section of the flow channel and then in the flow direction then the drop acceleration section (II) formed with substantially constant or substantially continuously narrowing flow cross section between two adjacent profiles (1) is 3. Droplet separator according to item 2, characterized in that the length (a) of the gas acceleration section (I) is approximately 0.2 to 1 axis of the length of the drop acceleration 3 section (II) « -5.0EZ.1984V216221 4 _# droplet separator according to item 2 or 3, characterized in that, each profile (1) in the region of the droplet acceleration section (II) starts from a profile side nose (N) on the side of the impingement on a profile thickness (s) of about 0.2 to 0, 6 times the center distance (t) of two adjacent profiles increases and that the length (b) of the drop acceleration section (II) is about 0.5 to 2 times the center distance (t) zveLer adjacent profiles * 5 "mist eliminator according to _Punkt 4, characterized in that the predetermined maximum profile thickness (s) over the" length (b) of the drop acceleration section (II) is substantially constant * 6 »Mist separator according to the pegs 1 to 5, characterized in that the cross-section of the profiles is asymmetrical, 7 _Φ dropper according to points 1 to 6, characterized in that the thickness of the profiles in the direction of the exit plane (E5) of the Ströraungskanälej starting with the first deflection (HI) to form diffusers (IV) with a C
is reduced. (IV) with a diffuser angle (ß) between 4 ° and 12 ° 8 # Droplet separator according to points 1 to 7, characterized in that the profiles are provided with trunks (10) and branches (11, · 12) for the separated liquid leading out to the entry plane (El). « Dropper according to points 1 to 8, characterized in that each droplet acceleration path to the inflow direction reinforces the first deflection (III) at an angle of inclination (») not greater than 30 °, preferably between 5 ° and 20 °, inclined « 10, droplet separator according to points 1 to 9 *, characterized in that in the drop acceleration section the one profile side (3) convexly bulges into the flow and the other profile side (2) is substantially planar, 11. A droplet separator according to item 9 or 10, characterized in that the droplet acceleration section is slightly curved between the inlet directed in the direction of flow and the outlet provided at the first diversion, 12 »The droplet separator according to items 1 to 11 _t characterized in that at the separation area (Al) after the first deflection of at least one second deflection, optionally followed by further separation area (A2) connects. 13. A droplet separator according to items 1 to 12, characterized in that the radius of curvature (r- _Λ \ r _o " ) on the concave profile side at the or each deflection less than or equal to about 0.25 times the center distance (t) of two adjacent profiles is and / or that the radius of curvature (r, ^ * ^r 2 2 ^ vexen profile side at the or each deflection greater than or equal to about 0 _r 25 times the center distance (t) of two adjacent profiles. 14. Droplet according to item 12, characterized in that the flow channel in the area behind the first and / or behind each further deflection has a constriction for creating a further drop acceleration path. 15. Droplet separator according to items 1 to 14, characterized in that the outlet ends of the profiles are thickened » 16. Droplet according to the points 1 to 15, characterized in that the walls of the flow channels are aligned so that the separated liquid can flow substantially transversely to the main flow direction and in that catch grooves (F) arranged on the or each subsequent to a deflection Abscheidefläche are that their lip tip (LS) seen in the flow direction, a distance from the previous deflection between 1/4 and 2/3 of the length (1 _A ) of the following on the deflection Abscheidefläche (A) have. For this 5 pages drawings