TW200920469A - Flue gas desulfurizer - Google Patents

Abstract

A liquid-column flue gas desulfurizer capable of flexibly coping with the change of conditions such as desulfurization performance, field adjustment, and so on, by which the increase of cost and construction time can be minimized. In the liquid-column flue gas desulfurizer for performing desulfurization by bringing absorbing liquid which is jetted upward from a liquid column nozzle (20) and falls in a desulfurization tower and combustion exhaust gas which rises from the bottom of the desulfurization tower into gas-liquid contact with each other, an outlet chip (30) having a different jet flow rate or jet pattern of the absorbing liquid is removably attached to the tip of the liquid column nozzle (20). By attaching a liquid column dispersing mechanism to the tip of the liquid column nozzle, the dispersion of a liquid column can be accelerated and the area of the absorbing liquid brought into contact with the combustion exhaust gas can be increased. Consequently, the desulfurization efficiency can be improved and the size of the desulfurization tower can be reduced, which is very effective in reducing the installation space and cost of the device.

Description

200920469 IX. Description of the Invention: [Technical Field] The present invention relates to a flue gas desulfurization device applicable to a power plant of coal fuel, crude oil fuel, heavy oil fuel, etc., in particular to an absorption liquid (seawater and Lime water, etc.) and desulfurization liquid column type flue gas desulfurization device. [Prior Art] Previously, a power plant using coal or crude oil as a fuel, from the boiler row

The combustion exhaust gas (hereinafter referred to as "boiler exhaust gas") is obtained by removing sulfur oxide (S0x) such as sulfur dioxide (so2) contained in the boiler exhaust gas and discharging it to the atmosphere. As a desulfurization method for a flue gas desulfurization apparatus for carrying out such a desulfurization treatment, a liquid column type flue gas desulfurization apparatus is known as a liquid column, that is, an absorption liquid such as sea water or lime water is inside the desulfurization tower. The steel furnace exhaust gas is desulfurized by gas (4). (4) The sulfur device is a device for desulfurization by gas-liquid contact with the exhaust gas of the steel furnace due to the internal setting of the desulfurization tower, the absorption of the absorption liquid by the column nozzle, and (4). In the previous liquid column method, for example, as shown in Fig. 17, and as shown in the figure, the liquid column nozzle 1 having a cylindrical shape is formed. The liquid column nozzle i is self-disposed in the desulfurization k column a liquid column spray illusion: = the head base 2 is upwardly mounted. The liquid is raised to the height of the liquid column Η2 defined by the characteristics set by the nozzle 1 until the liquid becomes a rod-shaped water having a substantially circular cross section, and is dispersed in the circumferential direction to the dispersion width in the vicinity of the apex (straight After the degree of W, the dispersion width w of the liquid column dispersion is larger than 132342.doc 200920469, the more the absorption liquid is dispersed into fine droplets, thereby increasing the area of gas-liquid contact. Therefore, in the liquid column type flue gas desulfurization device, in addition to the liquid flow rate of the liquid helium, the liquid column height 产生 which affects the gas-liquid contact time and the droplet area of the gas-liquid contact are affected. The dispersibility of the absorbing liquid (the diameter of the dispersion width W and the size of the droplets) is important for improving the desulfurization efficiency. Further, in the other prior art of the above-described flue gas desulfurization apparatus, there has been disclosed a configuration in which the water absorbing spray devices are arranged to be different from each other for the purpose of improving the desulfurization effect. (For example, refer to the patent document) [Patent Document 1] JP-A-2002-119827 [ SUMMARY OF THE INVENTION] However, the M 乍 in the flue gas desulfurization device 4 is a condition in which the flow rate of the absorbing liquid at 4 为 is fixed. The method of raising may increase the liquid column height H of the absorbing liquid ejected from the liquid column nozzle or increase the dispersibility. However, since the previous liquid column nozzle cannot change the characteristics, it is difficult to flexibly respond to changes in conditions. π, that is, in order to increase the flow rate of the absorbing liquid, it is necessary to change the absorbing liquid supply device such as a pump, and it is necessary to substantially increase the cost and the construction period. However, in the case where the flow rate of the absorbing liquid cannot be owed, it is necessary to adopt a countermeasure such as replacing a large number of liquid columns and increasing the height of the liquid column, and the replacement of such liquid column nozzles is also cost and time. : From the viewpoint of miniaturizing the absorption tower of the flue gas desulfurization device and achieving cost reduction, the manufacturer expects to increase the dispersibility of the absorption liquid ejected from the liquid column nozzle to improve the desulfurization performance. According to the above-described background, in the liquid column type flue gas desulfurization apparatus, when conditions such as desulfurization conditions are changed or on-site adjustment is performed, it is expected that the operator can reduce the increase in the cost and the construction period to a minimum. The present invention has been completed in the above-mentioned circumstances, and an object thereof is to provide a liquid column type flue gas desulfurization device which is subjected to conditions such as desulfurization performance change or on-site adjustment. A flexible response that minimizes the increase in cost and duration is made possible. X, the present invention =:: In the liquid column type flue gas desulfurization apparatus, the dispersibility of the absorption liquid ejected from the liquid column squirt is improved. In order to solve the above problems, the present invention employs the following method. Ben:: The flue gas desulfurization device is a kind of liquid column type flue gas desulfurization device. The inside of the desulfurization tower is made to eject the falling liquid from the liquid column nozzle and the falling liquid is rising below the desulfurization tower. At the end of the liquid column before the nozzle is detachable (4), and the outlet film with different speed or mouth pattern is different. The spray of the liquid and the flue gas desulfurization device of the liquid is in the liquid column mouth, and there is no need to replace the whole The outlet piece of the liquid column nozzle is different, because the liquid column height and the dispersibility of the liquid column nozzle can be changed, the variable degassing device of the invention can be changed, and the inside of the desulfurization tower is ... The flue gas desulfurization device of the method and the combustion row rising from the bottom of the desulfurization tower are sprayed and the absorbed liquid is discharged in the gas liquid contact at the front end of the liquid column nozzle to desulfurize, and the liquid dispersion mechanism is liquid. 132342.doc 200920469 According to the flue gas desulfurization device, the liquid column can be promoted to increase the liquid droplets of the absorption liquid by the liquid column dispersion mechanism at the front end of the nozzle, thereby making contact with the combustion exhaust gas. The surface area of the absorption liquid increases). Furthermore, the liquid column dispersion mechanism can also be mounted to the outlet sheet. negative%

According to the invention as described above, the pattern can be ejected by the replacement of the exit piece at the end. Therefore, when the conditions such as the desulfurization performance of the liquid column nozzle are changed without changing the replacement, it is possible to replace the outlet sheet with the cost and the construction period. It is easy to change the discharge flow rate of the absorption liquid or the entire liquid column nozzle before being detachably attached to the liquid column nozzle, only by the height and dispersion of the liquid column. Therefore, in the case of the situation, it is necessary to carry out on-site adjustment, so the flexibility to replace the entire nozzle is suppressed to a minimum.

In addition, by installing a liquid column dispersion mechanism at the front end of the liquid column nozzle, the liquid column can be dispersed to increase the surface area of the liquid contact with the money (4). Therefore, the desulfurization tower is miniaturized by the improvement of the desulfurization efficiency. Becomes; Moonlight, which has a large effect on the installation space and cost reduction of the device. [Embodiment] Hereinafter, an embodiment of the flue gas desulfurization apparatus of the present invention will be described based on the drawings. ~ In the flue gas desulfurization device 1 shown in Fig. 16, the 'desulfurization tower n is a liquid column type device, that is, a furnace that is discharged from a tin furnace of a power plant using, for example, coal or crude oil as a fuel. Before the sulphur oxide (s〇x) such as sulfur dioxide (S〇2) contained in the exhaust gas (hereinafter referred to as "steel furnace exhaust") is released into the atmosphere, 132342.doc 200920469 and the columnar seawater are discharged. 5, such as gray water, the absorption liquid is removed by gas-liquid contact. The illustrated flue gas desulfurization apparatus 10 is constructed by supplying an absorption liquid and a boiler exhaust gas to the inside of a desulfurization tower which is longitudinally placed, for example, in the shape of a cylinder having a rectangular cross section. 2 〇 The effluent absorbing liquid and the boiler exhaust gas generate gas-liquid contact to remove sulfur oxides. The boiler exhaust gas that has been supplied to the desulfurization tower 11 flows into the desulfurization tower crucible from the exhaust gas introduction port 12 provided below the desulfurization tower, and rises. The absorbing liquid supplied to the desulfurization tower 11 is ejected upward from a plurality of liquid column nozzles 20 installed on the headstock disposed in the desulfurization tower η, and rises inside the desulfurization tower u to the apex of the liquid column. It will naturally fall afterwards. Inside the desulfurization tower 11, a plurality of headers 13 are arranged in a horizontal direction at a predetermined interval, and each header 13 is connected to a supply pipe of an absorption liquid (not shown). Further, a plurality of liquid column nozzles 20 are attached to the upper portions of the respective headers 13 at equal intervals. The liquid column nozzle 20 forms a liquid column having a substantially cylindrical shape by ejecting the absorption liquid upward. Hereinafter, the configuration of the liquid column nozzle 2A will be specifically described. <First Embodiment> The liquid column nozzle 2 shown in Figs. 1A and 1B includes a nozzle body 21 and an outlet piece 3 detachably attached to the upper end portion of the nozzle body 21. In the configuration example shown in Fig. 1A and Fig. 3, the nozzle body is detachably integrated with the outlet piece 3〇 by the screwing of the external thread 21 of the nozzle body 2 and the internal thread 31 of the outlet piece 3〇. . Further, although not shown in the drawings, the sealing is performed at a necessary portion by a spacer or a ring-shaped ring or the like. 132342.doc -10· 200920469 The main body 21 is a liquid column nozzle 20 which contains a flange 23 of the head mount and which is substantially rounded into the shape of the nozzle. The outlet sheet 30 is a knife that defines a discharge/amp; speed or a discharge pattern of the absorbing liquid, and if necessary, prepares a plurality of outlet pieces 3 that are different in size and shape of the outlet, and are discharged as a circular section. The absorbing liquid forms a substantially cylindrical liquid column, and the height of the liquid column is adjusted by changing the diameter of the channel outlet of the absorbing liquid.

According to this configuration, the discharge flow rate or the discharge pattern of the absorbing liquid can be changed by preparing a plurality of outlet segments 30 having different outlet cross-sectional shapes or different sizes of the passage outlet diameters even in the same cross-sectional shape. Therefore, the liquid column nozzle 20 can easily change the discharge flow rate or the discharge pattern of the absorption liquid by replacing the detachable outlet piece 30 attached to the front end portion. Figure 2A, Figure 2B, Figure 2C shows the first! The configuration of the liquid column nozzle 2A of the modification is different in that the nozzle body 21A and the outlet piece 3 inserted into the upper end portion of the nozzle body 21A are detachably integrated. That is, instead of the screwing structure 'of the above embodiment, the fixing piece 4A is used to fix the outlet piece 30A to the nozzle body 21A. In this case, the sealing is also performed at a necessary portion by omitting a gasket or a ring-shaped ring or the like as shown. In addition, the fixing tape 40 shown in FIG. 2A, FIG. 2B, and FIG. 2C is formed by bending a wire member having elasticity, for example, by inserting both end portions into a locking hole (not shown) of the nozzle body 21A. The upper end surface of the outlet piece 30A in a state of being inserted and fitted only from the upper side can be press-fitted and fixed. 3A and 3B, the liquid column nozzle 2〇B of the second modification is inserted into the outlet piece 3〇B from the upper end of the main body 21B from the nozzle 132342.doc -11 - 200920469, and the fixing bolt is fixed from the outer peripheral portion. 41 and fixed structure. In the illustrated example, the three fixing bolts are disposed at a distance of 12 deg. from the through-nozzle main body 21B to reach the outlet piece 3, thereby preventing the movement in the axial direction and being fixed in this manner. Further, it is preferable that the number of the fixing bolts 41 is generally three or four, but it is not particularly limited.

Further, the liquid column nozzle 2〇c according to the third modification shown in FIG. 4A and FIG. 4B is provided with the flange portion 32 in the outlet piece 30C, and the outlet piece 30C is inserted from the upper end portion of the nozzle body 21C, and is fixed from above by the upper portion. The structure is fixed by the bolts 41. In the example of the drawing, the three fixing bolts are disposed at a pitch of 12 deg. and penetrate the flange portion w to reach the nozzle body 21C, thereby forming a fixing structure for preventing the opening piece 3c from moving in the axial direction. Further, it is preferable that the number of the fixing bolts 41 used in this case is generally three or four, but it is not particularly limited. <Second Embodiment> The liquid column nozzle 5 shown in Figs. 5A and 5B serves as a liquid column dispersion mechanism for promoting dispersion of the liquid column forming the liquid column, and a radial outlet 60 is attached to the tip end portion of the nozzle. In the case of the above-mentioned (4), the radial outlet provided at the front end of the substantially cylindrical nozzle body 51 has a cross-shaped exit shape in which the elongated rectangles are orthogonal to each other when viewed in plan. In other words, the absorbing liquid ejected from the liquid column nozzle 50 is ejected from the cross-shaped outlet which is formed by orthogonally elongating the rectangular shape, and the liquid column ejected in the form of a rod is circumscribed by the inclined portion 60a. The ruling makes the dispersion width of the liquid column W

Large, and reported in the rising process λ idle map + do not Α 〒 A 〒 entangled into the surrounding oxygen and easily dispersed into droplets. Therefore, when the absorbing liquid is dropped, it is in a state of being dispersed into relatively fine droplets, so that the surface area for gas-liquid contact with the steel furnace exhaust gas can be increased. Thus, in the state where the surface area (gas-liquid contact area) of the absorbing liquid is increased by the absorbing liquid, the desulfurization with high efficiency by the absorbing liquid is possible, because & When the flow rate of the absorbing liquid used is the same, only the contact area of the emulsion is increased, and the desulfurization performance as the entire apparatus is improved. f

In the configuration example shown in the 'fourth', the radial outlet 60 which is the liquid column dispersion mechanism is integrated with the nozzle body 51 of the liquid column nozzle 5, and is the same as the first embodiment except that it is different from the nozzle body 51. The radial exit σ6() of the liquid column separating mechanism is provided on the exit sheet, whereby the radial outlet 60 can be detachably attached to the nozzle body 51. However, the radial outlet 6 of the above-described embodiment has a cross shape when viewed in plan view. However, for example, the radial outlet 6 () shown in Fig. 6A and Fig. is generally arranged such that the rectangular shape of the long rectangle is 45 degrees apart. The radial shape of the outlet or the like is not limited to a cross shape. Next, a first modification of the liquid column separation mechanism will be described with reference to FIGS. 7A and 7B. In the first modification, the uneven portion Α is formed by a rectangular notch 免 which is disposed at a predetermined distance from the front end portion of the liquid column nozzle in the circumferential direction, and the uneven portion 6 is separated as a liquid column. The organization functions. In this case, the boiler exhaust gas sucked from the notch 61 to the periphery of the liquid column nozzle 50Α flows into the liquid column of the absorption liquid discharged from the liquid column nozzle 5, and therefore, is exhausted by the boiler. The dispersion of the liquid column of the liquid is promoted. Further, in this case, the uneven shape 6〇Α is not limited to a rectangular shape. For example, as shown in FIG. 8A and FIG. 8B, the concave-convex shape 132342.doc-13·200920469, 60B, etc. are formed by the triangular-shaped notch 61, and the like. Modifications are possible. Next, a second modification of the liquid column separation mechanism will be described with reference to Figs. 9 and 1B. In the second variant, the injectors 70 and 7A which are the liquid column separating means are provided in the vicinity of the outlet of the liquid column nozzle 1 of the prior art. By providing such injectors 70, 7〇Α, the liquid column actively attracts the surrounding steel furnace exhaust when flowing through the injector, and the pin furnace exhaust promotes dispersion of the liquid column.

Further, in the modified example, the injection (four), the tender and the liquid column nozzle of the prior structure are combined, and the spray m 7GAt (four) is combined with the residual spray and the modified example of the above-described embodiment, and may be combined with Fig. 5A shows a combination of a liquid column nozzle 5 含有 including a liquid column separation mechanism and a modification thereof. Next, a third modification of the liquid column separation mechanism will be described with reference to FIGS. 11B and 12. In the third modification, a swirling flow forming device serving as a liquid column separating mechanism is provided at an appropriate position of the liquid column nozzle. The swirl forming device shown in Figs. 11A and 11B is a cyclone 80 disposed near the outlet of the liquid column nozzle. By providing the cyclone 8 〇, the liquid column of the absorbing liquid ejected from the liquid column nozzle 1 is formed into a swirling flow, and the liquid column is diffused in the circumferential direction to increase the dispersion width w while rotating, the surface is raised. In the process of 'extracting the surrounding steel furnace exhaust to the liquid column. As a result, the boiler exhaust gas sucked into the liquid column is stirred by the swirling flow to promote the dispersion of the liquid column. Further, as a swirling flow forming device for forming a liquid column ejected from the liquid column jet, a spiral groove line 81 as shown in Fig. 12 is provided in addition to the above-described cyclone 80. The spiral groove line 81 is formed in a spiral groove of the inner circumferential surface 132342.doc -14· 200920469 of the liquid column nozzle 丨. Therefore, when the liquid column nozzle provided with the spiral groove line 81 passes through the inside of the nozzle, the swirling groove 81 forms a swirling flow and flows out so that the fourth (4) exhaust gas is attracted to The liquid column promotes dispersion of the liquid column. Further, in the third modification, the combination of the liquid column squirts 1 of the pre-material structure is not limited, and the liquid column nozzle 2 所示 and the modification thereof shown in the above-described i-th embodiment may of course be combined or may be combined with each other. 5A to 1B, the liquid column nozzle 50 including the liquid column separating mechanism and a modification thereof are combined. Finally, a fourth modification of the liquid column separation mechanism will be described with reference to FIGS. 13A and 13B. In the fourth modification, a gas suction port 9〇 serving as a liquid column separating mechanism is placed at an appropriate position β of the liquid column nozzle 丨. In the configuration example shown in the figure, in the vicinity of the outlet of the liquid column nozzle i, the eight gas suction ports 9 are pierced obliquely upward. By providing such a gas suction port 90, the surrounding boiler exhaust gas is attracted to the absorption liquid flowing in the nozzle, so that the boiler exhaust gas sucked into the liquid column promotes the dispersion of the liquid column. However, the direction in which the gas suction port 90 is obliquely upward and the number of the openings i 4 X are limited to the configuration examples of Figs. 13a and 13B described above. Further, the fourth modification is not limited to the configuration of the liquid column nozzle ι of the prior art, and the liquid column nozzle 2A and the modification thereof shown in the first embodiment may of course be combined, or may be combined with FIG. The liquid column nozzle 50 including the liquid column separation mechanism shown in Fig. 12 and a modification thereof are combined. As described above, according to the present invention described above, the discharge flow rate or the discharge pattern of the absorbing liquid can be easily changed by replacing the outlet piece 3 of the 邛 安装 安装 液 液 液 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. Therefore, it is not necessary to replace the entire liquid column nozzle, and the liquid column height η and the dispersion W of the liquid column nozzle 2 can be changed only by the replacement of the outlet piece 30. Therefore, even if the flow rate of the absorbing liquid is not changed, for example, as shown in Fig. 14, the nozzle piece 3〇 having a small outlet diameter can be replaced, thereby increasing the previous liquid column height Η to Ha. Further, even if the flow rate of the absorbing liquid is not changed, for example, the liquid column nozzle 5 安装 to which the columnar separating mechanism is attached may be used as the liquid column nozzle 5 安装, whereby the liquid column height Hn may be lower than before, but may be increased. Dispersion width Wn. As a result, when the conditions such as the desulfurization performance are changed or when it is necessary to perform on-site adjustment or the like, only the outlet piece 3 can be replaced and adjusted, and therefore, the cost is replaced as compared with the case of replacing the entire nozzle. It is possible to have a flexible response with minimal increase in construction period. Moreover, since the liquid column dispersion mechanism is installed at the front end of the liquid column nozzle, the dispersion of the liquid column can be promoted, so that the area of the absorption liquid in contact with the combustion exhaust gas can be increased, and therefore, the desulfurization efficiency can be improved. The miniaturization of the desulfurization tower' can reduce the installation space and cost of the device. The present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit and scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1A is a plan view showing an outlet shape of a first embodiment relating to a liquid column nozzle of a liquid column type flue gas desulfurization apparatus according to the present invention. Fig. 1B is a cross-sectional view showing a first embodiment relating to a liquid column nozzle of a liquid column type flue gas desulfurization apparatus according to the present invention. Fig. 2A is a plan view showing an exit shape of a first modification 132342.doc 16· 200920469 relating to the liquid column nozzle of Figs. 1a and 1B. Fig. 1B shows an i-th modification relating to the liquid column nozzle Fig. 2B is a cross-sectional view taken along line a of Fig. 1a. The second modification of the liquid column nozzle of Fig. 1B is the second modification of the liquid column nozzle of Fig. 1B.

Fig. 2C is a front view showing the same as Fig. 1A. Fig. 3A is a plan view showing the shape of the exit of Fig. 3A. The figure shows a sectional view of Fig. 1A. Second modification of the liquid column nozzle of Fig. 1B Fig. 4A is a plan view showing the shape of the outlet of the third modification relating to the liquid column nozzle of Figs. 1A and 1B. Fig. 4B is a cross-sectional view showing the first increase in relation to the liquid column nozzle of Figs. 1A and 1B. Fig. 5A is a plan view showing the outlet shape of the second embodiment relating to the liquid column nozzle of the liquid column separating mechanism including the radial outlet of the liquid column type flue gas desulfurization apparatus of the present invention. &

Fig. 5B is a cross-sectional view showing a second embodiment of the liquid column nozzle of the liquid column separation mechanism including the radial outlet of the liquid column type flue gas desulfurization apparatus of the present invention. Fig. 6A is a view showing a shape of an outlet of a modification relating to a liquid column nozzle including a radial exit/knife separating mechanism shown in Figs. 5A and 5B. Fig. 6B shows a state shown in Fig. 5A and Fig. 5A. A cross-sectional view of a modification relating to a liquid column nozzle including a radial exit separation mechanism.

Liquid of D liquid 132342.doc • 17· 200920469 Fig. 7A shows a liquid column separation mechanism including a concavo-convex portion according to a first modification relating to the liquid column separation mechanism of the radial outlet shown in Figs. 5A and 5B. A plan view of the exit shape of the column nozzle. Fig. 7B is a cross-sectional view showing a first modification relating to the liquid column nozzle of the liquid column separating mechanism of the radial outlet shown in Figs. 5A and 5B. Fig. 8A is a plan view showing an outlet shape of a modification relating to the liquid column nozzle of the liquid column separating mechanism including the uneven portion shown in Figs. 7A and 7B.

The figure is a cross-sectional view showing a modification relating to the liquid column nozzle of the liquid column separation mechanism including the uneven portion shown in Figs. 7A and 7B. Fig. 9 is a cross-sectional view showing a liquid column nozzle of a liquid column separating mechanism including an ejector according to a second modification of the liquid column separating mechanism of the radial outlet shown in Figs. 5A and 5B. The liquid column of the liquid column of the liquid separation column of the liquid separation column of the separation mechanism is separated from the liquid column of the liquid column separation port. FIG. 10 is related to the liquid column liquid nozzle containing the injector shown in FIG. A cross-sectional view of a modification. Fig. A is a plan view showing the shape of the outlet of the liquid column nozzle including the swirl forming and detaching mechanism according to the third modification of the radial separating mechanism shown in Figs. 5A and 5B. Fig. 11B is a cross-sectional view showing a third modification relating to the configuration of the radial outlet shown in Figs. 5A and 5B. Fig. 1 is a cross-sectional view showing a modification of the liquid column nozzle including the swirling flow forming device shown in Fig. 2 . Fig. 13A is a plan view showing the shape of an outlet of a liquid column nozzle including a gas suction port stack structure according to a fourth modification of the radial discharge mechanism shown in Figs. 5a and 5B. 132342.doc -18- 200920469 Fig. 13B is a cross-sectional view showing a fourth modification relating to the liquid column separating mechanism of the radial outlet of Figs. 5A and 5; Fig. 14 is a view for explaining the effect of the liquid column height of the liquid helium. Figure 15 is a diagram illustrating the effect associated with the dispersion width of the liquid column. Fig. 16 is a view showing the outline of the configuration of a liquid column type flue gas desulfurization apparatus. Figure 17 is a graph showing the liquid column height and dispersion width of the previous liquid column nozzle. Fig. 18A is a plan view showing the shape of the outlet of the liquid column nozzle of the liquid column type flue gas desulfurization apparatus. Fig. 18B is a cross-sectional view showing the liquid column nozzle of the liquid column type flue gas desulfurization apparatus. [Main component symbol description]

10 11 13 20, 20A, B, C 21, 21A, B, C 30, 30A, B, C 40 41 50, 50', 50A 51 60 ' 60' 60A, 60B flue gas desulfurization unit desulfurization tower head seat Column nozzle nozzle body outlet piece (nozzle piece) Fixing band fixing bolt Liquid column nozzle nozzle body radial outlet (liquid column separation mechanism) Concavo-convex shape portion (liquid column separation mechanism) 132342.doc -19- 200920469 61, 6Γ Notch 70 ' 70A ejector (liquid column separation mechanism) 80 Cyclone (liquid column separation mechanism) 81 Spiral groove line (liquid column separation mechanism) 90 Gas suction port (liquid column separation mechanism) 132342.doc -20-

Claims (1)

200920469 X. Patent application scope: 1 · A kind of flue gas desulfurization device, which is used in the interior of the de-sparing tower to make the absorption liquid falling from the liquid column squirting and falling and self-desulfurization negative. At the lower end of the liquid column nozzle, the effluent flow rate or the discharge of the absorbing liquid is detachably installed at the front end of the liquid column nozzle for the gas-liquid contact and the desulfurization. Export films with different patterns. 2. A flue gas desulfurization device which is a liquid column which is desulfurized by a gas-liquid contact between an absorption liquid which is ejected from a liquid column nozzle and is dropped from a combustion exhaust gas rising from a lower portion of the desulfurization tower inside the desulfurization tower. In the method of the flue gas desulfurization device, a liquid column dispersion mechanism is installed at the front end of the liquid column nozzle. 132342.doc