AA865-PCT Amendment DESCRIPTION Title of Invention: Separator Technical Field [ 0 0 0 1 ] The present invention relates to a separator which is arranged downstream of a wet dust collector which collects dust contained in exhaust gas and which separates water drops from the exhaust gas from the wet dust collector. Background Art [0002] In an ironmaking plant, to remove the dust from the exhaust gas of a converter, a wet dust collector is used. A wet dust collector sprays water on the passing exhaust gas and collects and removes the dust in the exhaust gas by the sprayed water. From the wet dust collector, the exhaust gas which contains the water drops which contain dust is exhausted. For separating the water drops from this exhaust gas, a separator is arranged downstream of the wet dust collector. [0003] The separator, for example, as shown in PLTs 1 and 2, has a tubular shaped housing which has an inlet which opens upward and a gas outlet which opens in the horizontal direction and which is bent about 90". Inside the housing, partitioning members which partition the inside space are arranged. The water drops in the exhaust gas which flows into the separator deposit on the inside surfaces of the outside walls of the housing and the surfaces of the partitioning members, and flow along the surfaces. The water which contains dust which flows along the inside surfaces of the outside walls (below, referred to as the "dust-containing water") is drained from a water outlet which is provided at the outside wall to outside of the housing. Further, the dust-containing water which flows along the surfaces of the partitioning members is dammed by dam parts which are formed at ends of the partitioning members which adjoin the gas outlet and is drained from the both end parts of the dam parts through the drainage port to outside of the housing. In this way, the exhaust gas which is introduced into the 5 separator is stripped of water drops, then is exhausted through the gas outlet from the separator. [0004] Further, PLT 3 describes a separation device (separator) which comprises an elbow pipe in which guide plates curved in the same way as the elbow pipe are 10 provided and wherein the inlet of the elbow pipe has a diffuser part of a venturi pipe connected to it so as to raise the flow rate of the gas flowing in the separator device. In the invention of PLT 3, the flow rate of the gas is raised so as to increase the amount of liquid 15 drops which collide with the guide plates or inside surface of the elbow pipe. [0005] Furthermore, PLT 4 describes an elbow type of separator which is provided with a plurality of impact plates which are inclined at a slant with respect to the 20 direction of flow of gas at the gas inlet of the separator and which increase the particle size of the water drops contained in the gas so as to make it easier to trap the water drops. 25 Citations List Patent Literature [0006] PLT 1: Japanese Patent Publication No. 63-140022A PLT 2: Japanese Utility Model Publication No. 51-114307U 30 PLT 3: Japanese Utility Model Publication No. 43-15417Y PLT 4: Japanese Patent Publication No. 55-79022A Summary of Invention Technical Problem 35 [0007] In the separator according to the prior art which is described in the already explained PLTs 1 and 2, the housing is formed so as to extend in the horizontal direction near the gas outlet. The partitioning members inside of the housing are similarly formed so as to extend in the horizontal direction near the gas outlet. Therefore, the dust-containing water which flows along the surface of the partitioning members falls in flow rate at the portions which extends in the horizontal direction and easily pool inside the dam parts. For this reason, inside the dam parts, dust may separate from the dust-containing water and accumulate. In particular, dust easily accumulated at the dam parts at the portions away from the drainage port. [ 0 0 0 8 ] If dust accumulate at the dam parts in this way, the dust-containing water will no longer be drained from the drainage port. It will pass over the dam parts and resplatter to the gas outlet resulting in a drop in the efficiency of the separator. In this case, water drops which contain dust will flow into the facility downstream of the separator and stable operation of the converter will be obstructed. [0009] In the invention of PLT 3, the elbow pipe and venturi pipe are configured to be combined and guide plates are configured to be arranged inside the elbow pipe, and therefore the configuration is complicated and the cost becomes higher. In addition, since the gas flow rate in the elbow pipe is raised by the venturi pipe, there is the problem that the pressure loss increases. [OOlO] In the invention of PLT 4, the pressure loss at inclined members which are provided at the inlet of the separator becomes higher. In addition, there is the problem that dust easily accumulates at the inclined members. In the invention of PLT 4, a cleaning nozzle is provided for cleaning off the dust accumulating at the inclined members by water. Therefore, the manufacturing costs and operating costs rise. Furthermore, while ejecting water from the cleaning nozzle to clean the inclined members, the amount of water drops in the gas increases, and therefore the amount of water drops passing through the separator and flowing out to the downstream side remarkably increases. [OOll] The present invention has as its technical problem to solve these problems of the prior art and has 5 as its object the provision of a separator which prevents pooling of dust-containing water which flows along the surfaces of partitioning members arranged at the inside of a housing so as to improve the efficiency of separation by a simple configuration. 10 Solution to Problem [0012] To achieve the above-mentioned object, according to the present invention, there is provided a separator which is connected downstream of a wet dust 15 collector for collecting dust contained in exhaust gas and which separates water drops containing dust from exhaust gas from the wet dust collector, characterized by comprising a housing having a gas inlet which opens upward and which receives exhaust gas from the wet dust 20 collector, and a gas outlet which opens in a horizontal direction or below that, the housing forming a passage which changes the direction of flow of exhaust gas flowing from the gas inlet to the gas outlet, at least one partitioning member arranged in the housing and 25 partitioning the inside space of the housing, the partitioning member being provided with a dam part for damming dust-containing water flowing along a surface of the partitioning member, at an end of the partitioning member at the gas outlet side, and a drainage pipe, 30 connected through a drainage port to the dam part, for draining the dust-containing water which was dammed by the dam part from the dam part to the outside of the housing, wherein at the partitioning member, a deflector which directs the dust-containing water flowing along the 35 surface of the partitioning member to the drainage port is arranged. [ 0 0 13 ] The partitioning member can be arranged so as to partition the inside space of the housing into upper and lower spaces at the gas outlet side. Further, drainage ports can be formed at the drainage pipes so as to open at the both ends of the dam 5 part in a transverse direction with respect to the direction of flow of gas inside the housing. [0014] The deflector can be made an approximately triangular plate shape which has a vertex at an upstream side in the direction of flow of gas and expands from the 10 vertex downstream in the direction of flow of gas. A projecting height H of the deflector from the partitioning member is preferably selected from 0.5xHolHll. OxHo in range with respect to the height Ho of the dam part. 15 [OOlS] In the partitioning member, a region which adjoins the dam part in the direction of flow of gas in the housing can be formed so as to be inclined toward the downstream side downward by an inclined angle 8 of 5°181250 in range. 20 [0016] The volume of the dust-containing water which is introduced to the housing and the inclined angle 8 can be made to satisfy the following relationship: When 400 m3/h5v<900 m3/h, 5°181250 When V2900 m3/h, 5°181-0.091xV+106. 81 25 [0017] According to another embodiment of the present invention, there is provided a separator which is connected downstream of a wet dust collector for collecting dust contained in exhaust gas and which separates water drops containing dust from exhaust gas 30 from the wet dust collector, characterized by comprising a housing which having a gas inlet which opens vertically upward and which receives exhaust gas from the wet dust collector, and a gas outlet which opens in a horizontal direction, the housing forming a passage which changes 35 the direction of flow of exhaust gas flowing from the gas inlet to the gas outlet from the vertically downward direction to the horizontal direction, at least one partitioning member arranged in the housing and partitioning the inside space of the housing, the partitioning member being provided with a dam part for damming dust-containing water flowing along a surface of the partitioning member, at an end of the partitioning member at the gas outlet side, and drainage pipes, connected through drainage ports to the dam part, for draining the dust-containing water which was dammed by the dam part from the dam part to the outside of the housing, wherein the at least one partitioning member is arranged at the gas outlet side so as to partition an inside space of the housing into upper and lower spaces, and wherein a region of the partitioning member which 15 adjoins the dam part in the direction of flow of gas in the housing is inclined toward the downstream side downward by an inclined angle 8, the inclined angle 8 being 5O<8125O. [ 0 0 18 1 The partitioning member may be provided with a 20 deflector which directs dust-containing water flowing along the surface of the partitioning member toward the drainage port. Brief Description of Drawings 25 [0019] FIG. 1 is a schematic view of a converter exhaust gas treatment facility which is provided with a separator according to the present invention. FIG. 2 is a schematic cross-sectional view of a separator according to a first embodiment of the present invention. 30 FIG. 3 is a schematic partial cross-sectional perspective view which shows cut away a portion of the partitioning member near the gas outlet. FIG. 4 is a cross-sectional view along an arrow IV-IV of FIG. 2. 35 FIG. 5 is a cross-sectional view along an arrow V-V of FIG. 2. FIG. 6 is a graph which shows the results of an experiment. F I G . 7 is a graph which shows the results of an experiment. FIG. 8 is a schematic cross-sectional view of a separator 5 according to a second embodiment of the present invention. F I G . 9 is a cross-sectional view along an arrow I X - I X of F I G . 8. F I G . 10 is a graph which shows the results of an 10 experiment. F I G . 11 is a graph which shows the results of an experiment. F I G . 12 is a schematic cross-sectional view of a separator according to a third embodiment of the present 15 invention. F I G . 13 is a cross-sectional view along an arrow X I I I - X I 1 1 of F I G . 12. F I G . 14 is a schematic partial cross-sectional view which shows cut away a portion of the partitioning member near 20 the gas outlet similarly to F I G . 3. Description of Embodiments [0020] Below, referring to the attached drawings, a separator according to a first embodiment of the present 25 invention will be explained. The separator 20 according to the present embodiment is, as one example, used in a converter exhaust gas treatment facility 10 for treating the exhaust gas of a converter 11 which treats molten pig iron, in an 30 ironmaking plant shown in F I G . 1. The converter exhaust gas treatment facility 10 is provided with a hood 12 positioned above the converter 11, a skirt 13 connecting the converter 11 and the hood 12 in a sealed state, a wet primary dust collector 15 connected through a duct 19 to 35 the hood 12 and removing dust from the exhaust gas, an exhaust gas cooler 14 arranged in the duct 19 and cooling exhaust gas from the converter 11, and a secondary dust collector 17 arranged downstream of the primary dust collector 15. In the present embodiment, the separator 20 is arranged between the primary dust collector 15 and the secondary dust collector 17. Note that, downstream of the 5 secondary dust collector 17, various gas treatment devices are arranged. [0021] Here, in the secondary dust collector 17 arranged downstream of the separator 20, a damper 18 which controls the pressure of the gas phase in the 10 converter 11, is arranged. If dust etc. deposits at the damper 18, it is no longer possible to precisely control the pressure in the converter 11, and stable operation of the converter may be obstructed. For this reason, it is necessary to sufficiently remove the dust by the 15 separator 20 upstream of the secondary dust collector 17. COO221 The primary dust collector 15 sprays water on the exhaust gas which runs through it, and traps and removes the dust in the exhaust gas by the sprayed water. The exhaust from the primary dust collector 15 contains 20 water drops sprayed to trap and remove dust and containing dust (below, described as "water drops"). The separator 20 according to the first embodiment of the present invention separates the water drops from the exhaust gas exhausted from the primary dust collector 15. 25 COO231 The separator 20 according to the present embodiment, as shown in FIG. 2, has a housing 21 which forms a passage, and at least one partitioning member 30 which partitions the inside space of the housing 21. The housing 21 has a gas inlet 22 which opens in the vertical 30 direction upward and a gas outlet 23 which opens in the horizontal direction. Further, the housing 21 has inside and outside walls 21a and 21b which extend along a quarter circle with a center angle of approximately 90°, and side walls 21c and 21d which are connected to the 35 inside and outside walls and extend in the vertical direction, and forms a passage having a rectangular cross-section which is vertical to the center axis 0 (FIG. 4) and is bent about 90'. In this way, the housing 21 extends in the vertical direction at a first portion adjoining the gas inlet 22, and extends in the horizontal direction at a second portion adjoining the gas outlet 23. Further, at the outside wall 21b near the gas outlet 23, a water outlet 24 which opens downward is provided. [0024] Each partitioning member 30 is comprised of a sheet member extending substantially in parallel with the inside and outside walls 21a and 21b. At the end of the downstream side in the direction of flow of gas, a dam part 31 is formed. In the present embodiment, two partitioning members 30 are provided in the housing 21. As shown in FIGS. 3 and 4, the inside space of the housing 21 is partitioned into three spaces in the vertical direction by the partitioning members 30. At the partitioning members 30, portions near the gas outlet 23 extend horizontally. The horizontal portions near the gas outlet 23, as shown in FIG. 4, are inclined so as to descend downward from the center part in the width direction (transverse direction with respect to flow of gas) toward the side walls 21c and 21d of the housing 21. 100251 At the end portions of the partitioning members 30 near the gas outlet 23, dam parts 31 which dam the dust-containing water flowing along the surfaces of the partitioning members 30 are provided. In the present embodiment, the dam parts 31 are formed into halved tubular shapes by rolling back the ends of the partitioning members 30 upward. The dam parts 31 extend across the entire widths of the partitioning members 30 30 in a transverse direction with respect to the direction of flow of gas. [0026] Each dam part 31 has a height Ho which is sufficient for drainage of the dust-containing water, which flows along the surface of the partitioning member 35 30, from later explained drainage ports 32. The height Ho can be suitably selected in accordance with the flow rate of the water drops, but as one example, 200 mmIHo1400 rnrn is preferable. When the height Ho of the dam part is less than 200 mm, under ordinary operating conditions, the dust-containing water sometimes rides over the dam part 131 and resplatters into the exhaust gas which flows 5 through the inside of the housing 21. Further, the higher the dam part 31, the more difficult it becomes for the dust-containing water to ride over the dam part 31, but the greater the pressure loss of the exhaust gas which flows through the separator 20. On the other hand, under 10 ordinary operating conditions, if the height Ho of the dam part is 400 mm, the dust-containing water can be prevented from riding over the dam part, and therefore making it 400 mm or less is preferable. [0027] Each partitioning member 30 according to the 15 present embodiment, as explained above, is inclined to descend downward from the center part in the width direction toward the both side walls 21c and 21d of the housing 21, and therefore the dust-containing water flowing along the surface of the partitioning member 30 20 flows toward the ends of the partitioning member 30 in the width direction, at the portion near the gas outlet 23. To drain this dust-containing water to the outside of the separator 20, drainage pipes 28 are connected to the ends of the dam part 31 in the width direction. At the 25 side faces of the drainage pipes 28 to which the dam part 31 is connected, drainage ports 32 which open toward the inside of the dam part 31 are formed. The drainage pipes 28 are arranged in the housing 21. [0028] Further, at the top surface of each 30 partitioning member 30, as shown in F I G . 3, a deflector 35 which directs dust-containing water flowing along the surface of the partitioning member 30 toward the drainage ports 32 to the both ends in the width direction, is arranged. The deflector 35, as shown in F I G . 5, is 35 comprised of an approximately isosceles triangle shaped member which expands downstream in the direction of flow of gas in the housing 21. That is, the side faces 35a and 35b which form the two slanted sides of the deflector 35 converge toward each other the further toward the upstream side. At the center part of the housing 21 in the width direction, one of the ends of the side faces 35a and 35b are connected with each other whereby a vertex 35c is formed. The base part 35d which forms the bottom side of the deflector 35 is arranged in the dam part 31. Note that, the side faces 35a and 35b of the deflector 35 are preferably curved slightly in a concave 10 shape, as shown in FIG. 5. Here, the height H of the deflector 35 is preferably selected from 0.5xH0 rs.@ J , &,L@ - - 30 %i,..i .-• The separator as set forth in claim 5 where'in a flow rate V of dust-containing water introduced to the housing and the inclined angle 0 satisfy the following relationships: 5 When 400 m3/h<~<900 m3/h, 5O<0<25" When V2900 m3/h, 5"I0I-O.O91xV+106. 81 Dated this 2om day of November, 20 13 ATTORNEY F