Wet desulphurization absorption tower

Abstract

The invention discloses a wet desulphurization absorption tower, which comprises a desulphurization absorption tower body, the top end of the desulphurization absorption tower body is connected with a discharge pipe, the discharge pipe is made of metal with excellent thermal conductivity, the top end of the desulphurization absorption tower body is provided with an auxiliary heating mechanism, the auxiliary heating mechanism is provided with a feeding mechanism, and the feeding mechanism is provided with a discharging mechanism. A discharge mechanism is mounted on the auxiliary heating mechanism, and a drainage mechanism is further arranged in the auxiliary heating mechanism; the hot air flow moves upwards, enters the inlet pipe, penetrates through the first branch pipe and flows into the inner groove, the heating plate is connected with the discharge pipe in an attached mode, the hot air flow heats the heating plate, then the discharge pipe is heated, and therefore energy consumption of a heating device in the discharge pipe is reduced.

Description

Technical Field

[0001] The present invention relates to the field of sulfide treatment equipment, in particular to a wet desulfurization absorption tower. Background Art

[0002] Wet desulfurization is a process in which sulfur dioxide is converted into gypsum or hydrogen sulfide for removal by contacting and reacting the flue gas with injected limestone slurry. In this process, the sulfur dioxide in the flue gas reacts chemically with the calcium carbonate in the slurry and the blown oxidizing air to produce gypsum. A large amount of heat is released during this reaction.

[0003] There is still some water vapor in the flue gas after being treated by the desulfurization absorption tower. Although the water vapor is removed by the demister in the desulfurization absorption tower, there is still some water vapor in the flue gas. If it is not reheated, condensed water may form in the discharge pipe, causing corrosion of the discharge pipe and "white smoke" phenomenon. Conventional desulfurization absorption tower discharge pipes will be equipped with additional heating and insulation measures to prevent the liquefaction of water vapor in the flue gas. However, relying solely on additional heating devices will increase energy consumption. For this reason, a wet desulfurization absorption tower is needed to assist in increasing the temperature of the discharge pipe, thereby reducing the energy consumption of the heating device. Summary of the Invention

[0004] The purpose of the present invention is to provide a wet desulfurization absorption tower to overcome the defect of high energy consumption of the heating device in the discharge pipe.

[0005] The technical solution to achieve the above-mentioned purpose is: a wet desulfurization absorption tower, comprising a desulfurization absorption tower body, the top of the desulfurization absorption tower body is connected to a discharge pipe, the discharge pipe is made of metal with excellent thermal conductivity, the top of the desulfurization absorption tower body is provided with an auxiliary heating mechanism, a feeding mechanism is provided on the auxiliary heating mechanism, a discharge mechanism is installed on the auxiliary heating mechanism, and a drainage mechanism is also provided in the auxiliary heating mechanism.

[0006] Preferably, the auxiliary heating mechanism includes an inlet pipe, a first top cover, a first branch pipe, a heating plate, an inner tank, a second branch pipe, an outlet pipe, a second top cover and a center hole. The top side wall of the desulfurization absorption tower body is connected to the inlet pipe, the top of the inlet pipe is connected to the first top cover, the side wall of the inlet pipe is connected and communicated with multiple first branch pipes distributed in an upper and lower array, the bottom end of the first branch pipe is connected to the heating plate, the inner side walls of multiple heating plates are provided with inner tanks, the tops of multiple heating plates are provided with center holes, the side wall of the center hole is connected to the side wall of the discharge pipe, the side wall of the heating plate is connected to the second branch pipe, the first branch pipe and the second branch pipe are both communicated with the inner tank, the side wall of the outlet pipe is connected with multiple second branch pipes distributed in an upper and lower array, the top of the outlet pipe is connected to the second top cover, and the side wall of the outlet pipe is connected to the top of the desulfurization absorption tower body.

[0007] Preferably, the first top cover is hemispherical in shape, the second top cover is cylindrical in shape, the bottom end of the inlet pipe is located above the inner side of the desulfurization absorption tower body, and the bottom end of the outlet pipe is located below the inner side of the desulfurization absorption tower body.

[0008] Preferably, the heating plate is made of metal with excellent thermal conductivity, the heating plate and the inner groove are both arranged to be placed in an inclined state, the first branch pipe is located on the side wall at the high end of the heating plate, and the second branch pipe is located on the side wall at the low end of the heating plate, and the bottom end of the inner side wall of the first branch pipe and the bottom end of the inner side wall of the second branch pipe are both flush with the bottom end of the inner groove.

[0009] Preferably, a heat insulation board is provided on the side wall of the outlet pipe located above the inner side of the desulfurization absorption tower body.

[0010] Preferably, the feeding mechanism includes a feeding pipe and a first filter plate, the bottom end of the feeding pipe is connected to the feeding pipe, the bottom end of the feeding pipe is connected to the first filter plate, and the feeding pipe is in a truncated cone shape.

[0011] Preferably, the discharge mechanism includes a discharge pipe and a second filter plate, the bottom end of the discharge pipe is connected to the discharge pipe, the side wall of the bottom end of the discharge pipe is connected to the second filter plate, and the discharge pipe is in the shape of an inverted frustum.

[0012] Preferably, the drainage mechanism includes an inclined plate, a connecting plate and air outlet holes, the bottom end of the second top cover is connected to the inclined plate, the bottom end of the inclined plate is connected to the connecting plate, the side wall of the connecting plate is provided with multiple air outlet holes, and the outlet end of the second branch pipe faces the inclined plate.

[0013] The beneficial effects of the present invention are:

[0014] 1) The hot air flow will move upward, enter the inlet pipe, then pass through the first branch pipe and flow into the inner tank. The heating plate is connected to the discharge pipe, so that the hot air flow heats the heating plate and then heats the discharge pipe, thereby reducing the energy consumption of the heating device in the discharge pipe.

[0015] 2) By utilizing the downwardly inclined guide surface formed by the first branch pipe, the inner tank, and the second branch pipe, the hot air flow can carry tiny particles more easily to the second branch pipe, and the cooled hot air flow flows to the outlet pipe, thereby avoiding particle blockage in the first branch pipe, the inner tank, and the second branch pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the present invention;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the inlet pipe of the present invention;

[0019] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure of the middle figure;

[0020] Figure 5 yes Figure 2 Schematic diagram of the enlarged structure of Figure B;

[0021] Figure 6 yes Figure 3 Schematic diagram of the enlarged structure of output C;

[0022] Figure 7 yes Figure 3 Schematic diagram of the enlarged structure of Figure D.

[0023] Figure Number:

[0024] 1. Desulfurization absorption tower body; 2. Discharge pipe; 3. Auxiliary heating mechanism; 301. Inlet pipe; 302. First top cover; 303. First branch pipe; 304. Heating plate; 305. Inner tank; 306. Second branch pipe; 307. Outlet pipe; 308. Second top cover; 309. Center hole; 4. Feed mechanism; 401. Feed pipe; 402. First filter plate; 5. Discharge mechanism; 501. Outlet pipe; 502. Second filter plate; 6. Drainage mechanism; 601. Inclined plate; 602. Connecting plate; 603. Air outlet. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Reference Attachment Figure 1-7 A wet desulfurization absorption tower includes a desulfurization absorption tower body 1, the top of the desulfurization absorption tower body 1 is connected with a discharge pipe 2, and is characterized in that the discharge pipe 2 is made of metal with excellent thermal conductivity, and an auxiliary heating mechanism 3 is provided at the top of the desulfurization absorption tower body 1, a feeding mechanism 4 is provided on the auxiliary heating mechanism 3, a discharge mechanism 5 is installed on the auxiliary heating mechanism 3, and a drainage mechanism 6 is also provided in the auxiliary heating mechanism 3.

[0028] Reference Attachment Figure 2-3 and attached Figure 7 The auxiliary heating mechanism 3 includes an inlet pipe 301, a first top cover 302, a first branch pipe 303, a heating plate 304, an inner tank 305, a second branch pipe 306, an outlet pipe 307, a second top cover 308 and a center hole 309. The top side wall of the desulfurization absorption tower body 1 is connected to the inlet pipe 301, the top of the inlet pipe 301 is connected to the first top cover 302, the side wall of the inlet pipe 301 is connected and communicated with multiple first branch pipes 303 distributed in an upper and lower array, the bottom end of the first branch pipe 303 is connected to the heating plate 304, the inner side walls of the multiple heating plates 304 are all provided with inner tanks 305, the tops of the multiple heating plates 304 are all provided with center holes 309, the side walls of the center hole 309 are connected to the side walls of the discharge pipe 2, the side walls of the heating plate 304 are connected to the second branch pipe 306, the heating plate 304 is made of metal with excellent thermal conductivity, and the heating plate 304 and the inner tank 305 are both set to be placed in an inclined state. The first branch pipe 303 is located on the side wall at the high end of the heating plate 304, and the second branch pipe 306 is located on the side wall at the low end of the heating plate 304. The bottom ends of the inner side walls of the first branch pipe 303 and the second branch pipe 306 are flush with the bottom end of the inner tank 305. The first branch pipe 303 and the second branch pipe 306 are both connected to the inner tank 305. The side wall of the outlet pipe 307 is connected with multiple second branch pipes 306 distributed in an upper and lower array. The top of the outlet pipe 307 is connected with the second top cover 308. The shape of the first top cover 302 is hemispherical, and the shape of the second top cover 308 is cylindrical. The bottom end of the inlet pipe 301 is located at the upper inner side of the desulfurization absorption tower body 1, and the bottom end of the outlet pipe 307 is located at the lower inner side of the desulfurization absorption tower body 1. The side wall of the outlet pipe 307 is connected to the top of the desulfurization absorption tower body 1, and the side wall of the outlet pipe 307 located at the upper inner side of the desulfurization absorption tower body 1 is provided with an insulation plate.

[0029] When desulfurization is carried out in the desulfurization absorption tower body 1, lime water is used for reaction. In the process of lime water reacting to form gypsum, a large amount of heat is generated, and the hot air flow moves upward, enters the inlet pipe 301, and then passes through the first branch pipe 303 and flows into the inner tank 305. The heating plate 304 is connected to the discharge pipe 2 so that the hot air flow heats the heating plate 304 and then heats the discharge pipe 2, thereby reducing the energy consumption of the heating device in the discharge pipe 2 and achieving the reduction of the energy consumption of the heating device. Then, the downward inclined guide surface formed by the first branch pipe 303, the inner tank 305 and the second branch pipe 306 is used to carry tiny The particles are more likely to flow to the second branch pipe 306, and the cooled hot air flow flows to the outlet pipe 307, thereby avoiding particle blockage in the first branch pipe 303, the inner tank 305 and the second branch pipe 306. The bottom end of the outlet pipe 307 is located at the lower inner side of the desulfurization absorption tower body 1, so that the cooled hot air flow can sink to the lower inner side of the desulfurization absorption tower body 1. The side wall of the outlet pipe 307 located at the upper inner side of the desulfurization absorption tower body 1 is provided with an insulation plate, so that the side wall above the outlet pipe 307 is reduced in the degree of heating by the hot air flow above the desulfurization absorption tower body 1, thereby avoiding the downward-flowing cooled hot air flow from being heated for the second time, causing the cooled hot air flow to reflux.

[0030] Reference Attachment Figure 3 The feeding mechanism 4 includes a feeding pipe 401 and a first filter plate 402. The bottom end of the feeding pipe 301 is connected to the feeding pipe 401, and the bottom end of the feeding pipe 401 is connected to the first filter plate 402. The feeding pipe 401 is in the shape of a truncated cone.

[0031] Reference Attachment Figure 4 The discharge mechanism 5 includes a discharge pipe 501 and a second filter plate 502. The bottom end of the discharge pipe 307 is connected to the discharge pipe 501, and the bottom side wall of the discharge pipe 501 is connected to the second filter plate 502. The discharge pipe 501 is in the shape of an inverted frustum.

[0032] Before the hot air flows into the inlet pipe 301, it passes through the feed pipe 401. By opening the feed pipe 401 wider, the amount of hot air flowing in can be increased, and the first filter plate 402 can be used to isolate large particles in the air flow.

[0033] The cooled hot air flow flowing downward in the outlet pipe 307 will pass through the outlet pipe 501 and flow to the bottom inner side of the desulfurization absorption tower body 1. The second filter plate 502 can isolate the large particles in the desulfurization absorption tower body 1. The outlet pipe 501 has a small opening at the bottom and a large opening at the top, which can reduce the flow of gas in the desulfurization absorption tower body 1 to the outlet pipe 501.

[0034] Reference Attachment Figure 5-6The drainage mechanism 6 includes an inclined plate 601, a connecting plate 602 and an air outlet 603. The bottom end of the second top cover 308 is connected to the inclined plate 601, and the bottom end of the inclined plate 601 is connected to the connecting plate 602. The side wall of the connecting plate 602 is provided with multiple air outlet holes 603, and the outlet end of the second branch pipe 306 faces the inclined plate 601.

[0035] When the cooled hot air flows out from the second branch pipe 306 and flows toward the outlet pipe 307 , the cooled hot air will impact the inclined plate 601 , and the inclined plate 601 is inclined downward, so that the air flow will flow downward along the inclined plate 601 , thereby reducing the amount of air flow impacting upward.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wet desulfurization absorption tower, comprising a desulfurization absorption tower body (1), wherein the top of the desulfurization absorption tower body (1) is connected to a discharge pipe (2), characterized in that: The discharge pipe (2) is made of a metal with excellent thermal conductivity. An auxiliary heating mechanism (3) is provided at the top of the desulfurization absorption tower body (1). A feeding mechanism (4) is provided on the auxiliary heating mechanism (3). A discharge mechanism (5) is installed on the auxiliary heating mechanism (3). A drainage mechanism (6) is also provided inside the auxiliary heating mechanism (3).

2. A wet desulfurization absorption tower according to claim 1, characterized in that: The auxiliary heating mechanism (3) comprises an inlet pipe (301), a first top cover (302), a first branch pipe (303), a heating plate (304), an inner tank (305), a second branch pipe (306), an outlet pipe (307), a second top cover (308) and a central hole (309); the top side wall of the desulfurization absorption tower body (1) is connected to the inlet pipe (301); the top end of the inlet pipe (301) is connected to the first top cover (302); the side wall of the inlet pipe (301) is connected and communicated with a plurality of first branch pipes (303) distributed in an upper and lower array; the bottom end of the first branch pipe (303) is connected to the heating plate (304); the plurality of heating plates ( The inner side walls of the plurality of heating plates (304) are each provided with an inner groove (305), the top ends of the plurality of heating plates (304) are each provided with a central hole (309), the side wall of the central hole (309) is connected to the side wall of the discharge pipe (2), the side wall of the heating plate (304) is connected to the second branch pipe (306), the first branch pipe (303) and the second branch pipe (306) are both in communication with the inner groove (305), the side wall of the outlet pipe (307) is connected to a plurality of second branch pipes (306) distributed in an upper and lower array, the top end of the outlet pipe (307) is connected to a second top cover (308), and the side wall of the outlet pipe (307) is connected to the top end of the desulfurization absorption tower body (1).

3. A wet desulfurization absorption tower according to claim 2, characterized in that: The first top cover (302) is hemispherical in shape, the second top cover (308) is cylindrical in shape, the bottom end of the inlet pipe (301) is located above the inner side of the desulfurization absorption tower body (1), and the bottom end of the outlet pipe (307) is located below the inner side of the desulfurization absorption tower body (1).

4. A wet desulfurization absorption tower according to claim 2, characterized in that: The heating plate (304) is made of metal with excellent thermal conductivity. The heating plate (304) and the inner groove (305) are both arranged in an inclined position. The first branch pipe (303) is located on the side wall at the high end of the heating plate (304), and the second branch pipe (306) is located on the side wall at the low end of the heating plate (304). The bottom end of the inner side wall of the first branch pipe (303) and the bottom end of the inner side wall of the second branch pipe (306) are both flush with the bottom end of the inner groove (305).

5. A wet desulfurization absorption tower according to claim 2, characterized in that: The side wall of the outlet pipe (307) located at the upper inner side of the desulfurization absorption tower body (1) is provided with a heat insulation board.

6. A wet desulfurization absorption tower according to claim 2, characterized in that: The feeding mechanism (4) comprises a feeding pipe (401) and a first filter plate (402); the bottom end of the feeding pipe (301) is connected to the feeding pipe (401); the bottom end of the feeding pipe (401) is connected to the first filter plate (402); and the feeding pipe (401) is truncated cone-shaped.

7. A wet desulfurization absorption tower according to claim 2, characterized in that: The discharge mechanism (5) comprises a discharge pipe (501) and a second filter plate (502); the bottom end of the discharge pipe (307) is connected to the discharge pipe (501); the side wall of the bottom end of the discharge pipe (501) is connected to the second filter plate (502); and the discharge pipe (501) is in the shape of an inverted frustum.

8. A wet desulfurization absorption tower according to claim 2, characterized in that: The drainage mechanism (6) comprises an inclined plate (601), a connecting plate (602) and an air outlet (603); the bottom end of the second top cover (308) is connected to the inclined plate (601); the bottom end of the inclined plate (601) is connected to the connecting plate (602); a plurality of air outlets (603) are provided on the side wall of the connecting plate (602); and the outlet end of the second branch pipe (306) faces the inclined plate (601).

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