Desulfurizing tower for power plant

Abstract

The utility model relates to the technical field of desulfurizing towers, in particular to a desulfurizing tower for a power plant, which comprises a tower body, the center of the bottom of the tower body is communicated with an air inlet pipe, the tail end of the air inlet pipe is sequentially communicated with a plurality of air outlet discs, the air outlet discs are communicated through a connecting core pipe, and the surface of the connecting core pipe is rotatably connected with an impeller. Annular pipes are arranged on the outer sides of the impellers, the annular pipes are communicated through connecting pipes, the inner sides of the annular pipes are communicated with spraying pipes at equal intervals, the inner ends of the spraying pipes directly face the impellers, and the spraying pipe on the inner side of the uppermost annular pipe in the tower body is communicated with the bottom of a liquid inlet pipe. Spraying mechanisms and honeycomb bodies are sequentially and alternately arranged on the surface of the liquid inlet pipe. The utility model aims to provide the desulfurizing tower for the power plant, so as to solve the problems that in order to ensure the flue gas treatment effect, the traditional desulfurizing tower is generally constructed to be very high, the size is relatively large, and the flue gas flow cannot be too fast.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization towers, and particularly relates to a desulfurization tower for power plants. Background Technique

[0002] The desulfurization tower is a tower equipment for desulfurizing industrial waste gas. The desulfurization tower was originally most widely applied in granite masonry. It uses the principle of water film desulfurization and dust removal, also known as granite water film desulfurization dust collector, or hemp stone water film desulfurization dust collector.

[0003] At present, a large amount of flue gas is generated during the operation of coal-fired power plants, and a large amount of sulfide gas generated by coal combustion is often accompanied in the flue gas. Therefore, it needs to be desulfurized by a desulfurization tower before it can meet the flue gas emission standards. However, when the traditional desulfurization tower performs desulfurization treatment, since the flue gas mostly enters from the bottom and exits from the top, the flue gas moves upward through the absorption liquid, and then the absorption liquid is used to carry out a neutralization reaction adsorption on the sulfide in the flue gas. Therefore, in order to ensure the flue gas treatment effect, the height of the desulfurization tower is generally built very high, with a large volume, and the flue gas flow rate cannot be too fast. Content of the Utility Model

[0004] The purpose of the utility model is to provide a desulfurization tower for power plants, so as to solve the problems that in order to ensure the flue gas treatment effect, the height of the traditional desulfurization tower is generally built very high, with a large volume, and the flue gas flow rate cannot be too fast.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A desulfurization tower for power plants includes a tower body. The center of the bottom of the tower body is connected with an air inlet pipe. The tail end of the air inlet pipe is successively connected with a plurality of air outlet discs. The air outlet discs are connected through a connecting core pipe. The surface of the connecting core pipe is rotatably connected with an impeller. An annular pipe is arranged outside the impeller. The annular pipes are connected through a connecting pipe. The inner sides of the annular pipes are equidistantly connected with spray pipes. The inner ends of the spray pipes face the impeller. The spray pipes on the inner side of the uppermost annular pipe in the tower body are connected to the bottom of a liquid inlet pipe. The surface of the liquid inlet pipe is successively and alternately provided with a spraying mechanism and a honeycomb body. The upper side of the liquid inlet pipe is fixed to the center of the top of the tower body.

[0007] Preferably, the bottom edge of the tower body is equidistantly fixedly connected with supports, and an observation window is arranged on the surface of the tower body.

[0008] Preferably, the top and bottom of the tower body are both connected with an air outlet pipe and a liquid outlet pipe.

[0009] Preferably, through holes are equidistantly formed on the surfaces of the air outlet discs, annular pipes, connecting pipes and spray pipes.

[0010] Preferably, the air outlet disc is designed as a hollow disc, and partition walls are equidistantly arranged inside, and a flow buffering block is integrated at the bottom of the connecting core pipe.

[0011] Preferably, the spraying mechanism includes a flow dividing disc, and spraying pipes are equidistantly communicated with the outside of the flow dividing disc, and spraying heads are communicated with the outer ends of the spraying pipes.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, by adding a plurality of air outlet discs at the tail end of the intake pipe, and adding an annular pipe outside the air outlet discs, the impeller between the air outlet discs can be driven to rotate in cooperation with the spray pipe, so that the flue gas can be evenly distributed and discharged in the tower and efficiently and quickly mixed with the absorption liquid for reaction. Moreover, the spraying mechanism and the honeycomb body are staggeredly arranged on the top of the air outlet disc, and the flue gas floating upward after being adsorbed by the absorption liquid can be further subjected to spraying and adsorption treatment, so that the flue gas can be efficiently neutralized with the absorption liquid in a short stroke, thereby compressing the height of the desulfurization tower, reducing its volume, and the design of multi-air outlet disc for split air outlet can realize the full-flow air outlet purification of the intake pipe, so as to get rid of the flow restriction of the intake pipe and achieve the full-load operation of the intake pipe. Description of the Drawings

[0014] Figure 1 is the upper axonometric view of a desulfurization tower for a power plant according to the present utility model;

[0015] Figure 2 is the lower axonometric view of a desulfurization tower for a power plant according to the present utility model;

[0016] Figure 3 is the side sectional view of the tower body of a desulfurization tower for a power plant according to the present utility model;

[0017] Figure 4 is the schematic diagram of the internal structure inside the tower of a desulfurization tower for a power plant according to the present utility model;

[0018] Figure 5 is the top sectional view of the air outlet disc of a desulfurization tower for a power plant according to the present utility model;

[0019] Figure 6 is the side sectional view of the air outlet disc of a desulfurization tower for a power plant according to the present utility model.

[0020] In the figure: 1, tower body; 2, intake pipe; 3, air outlet disc; 4, connecting core pipe; 5, impeller; 6, annular pipe; 7, connecting pipe; 8, spray pipe; 9, liquid inlet pipe; 10, spraying mechanism; 101, flow dividing disc; 102, spraying pipe; 103, spraying head; 11, honeycomb body; 12, support; 13, observation window; 14, air outlet pipe; 15, liquid outlet pipe; 16, through hole; 17, partition wall; 18, flow buffering block. Detailed Embodiment

[0021] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figure 1-6 , the present invention provides a technical solution:

[0023] A desulfurization tower for a power plant, including a tower body 1. The bottom center of the tower body 1 is connected to an intake pipe 2 for introducing the flue gas from the coal combustion in the power plant into the desulfurization tower from the bottom. The tail end of the intake pipe 2 is successively connected to a number of gas outlet trays 3, and the gas outlet trays 3 are connected through a connecting core pipe 4 for uniformly discharging the flue gas in the tower, mixing with the absorption liquid. Using the design of multiple gas outlet trays, it can meet the full-flow intake of the intake pipe, avoid the restriction of the flue gas flow rate, and achieve the full-load operation of the intake pipe. A impeller 5 is rotatably connected to the surface of the connecting core pipe 4, and an annular pipe 6 is arranged outside the impeller 5. The annular pipes 6 are connected through a connecting pipe 7. The inner side of the annular pipe 6 is equidistantly connected with spray pipes 8, and the inner end of the spray pipe 8 faces the impeller 5 for external flushing when the gas outlet tray discharges gas, and the absorption liquid can drive the impeller to rotate in cooperation with the spray pipe, thereby stirring the absorption liquid and improving the mixing effect of the flue gas and the absorption liquid. The spray pipes 8 on the inner side of the uppermost annular pipe 6 in the tower body 1 are connected to the bottom of the liquid inlet pipe 9. The surface of the liquid inlet pipe 9 is successively and alternately provided with a spraying mechanism 10 and a honeycomb body 11. The upper side of the liquid inlet pipe 9 is fixed to the top center of the tower body 1 for further spraying and adsorbing the flue gas absorbed and treated at the bottom of the tower body, thereby ensuring the desulfurization effect of the flue gas, realizing the efficient neutralization reaction of the flue gas and the absorption liquid in a short stroke, and thus compressing the height of the desulfurization tower and reducing its volume.

[0024] In this embodiment, please refer to Figure 1 , equally spaced support seats 12 are fixedly connected to the bottom edge of the tower body 1 for supporting and fixing the construction of the desulfurization tower; an observation window 13 is arranged on the surface of the tower body 1 for observing the liquid level of the absorption liquid.

[0025] In this embodiment, please refer to Figure 3 , both the top and the bottom of the tower body 1 are connected to an outlet pipe 14 and an outlet liquid pipe 15 for exhausting gas at the top of the desulfurization tower and discharging and recycling the absorption liquid at the bottom.

[0026] In this embodiment, please refer to Figure 4 , through holes 16 are equidistantly arranged on the surfaces of the gas outlet tray 3, the annular pipe 6, the connecting pipe 7 and the spray pipe 8 to realize the internal flushing and stirring of the absorption liquid for the flue gas discharged from the gas outlet tray, so as to accelerate the mixing effect of the flue gas and the absorption liquid.

[0027] In this embodiment, please refer to Figure 6 , the air outlet plate 3 is designed as a hollow plate, and partition walls 17 are equidistantly arranged inside for uniform discharge in the flue gas tower; a flow retarder block 18 is integrated at the bottom of the connecting core pipe 4 for blocking the air outlet of each air outlet plate, so that it is fully filled with the previous air outlet plate before being introduced into the next air outlet plate, ensuring the flue gas diversion effect.

[0028] In this embodiment, please refer to Figure 4 , the spraying mechanism 10 includes a shunt plate 101, spraying pipes 102 are equidistantly communicated with the outside of the shunt plate 101, and spraying heads 103 are communicated with the outer ends of the spraying pipes 102 to realize uniform spraying on the top of the honeycomb body, so that it makes secondary contact absorption reaction with the flue gas passing through the honeycomb body to ensure the flue gas desulfurization effect.

[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desulfurization tower for a power plant, characterized in that: It includes a tower body (1), a gas inlet pipe (2) is connected to the center of the bottom of the tower body (1), the tail end of the gas inlet pipe (2) is sequentially connected to a plurality of gas outlet plates (3), the gas outlet plates (3) are connected through a connecting core pipe (4), an impeller (5) is rotatably connected to the surface of the connecting core pipe (4), an annular pipe (6) is arranged outside the impeller (5), the annular pipes (6) are connected through a connecting pipe (7), spray pipes (8) are equidistantly connected to the inner side of the annular pipe (6), the inner ends of the spray pipes (8) face the impeller (5), the spray pipes (8) on the inner side of the uppermost annular pipe (6) in the tower body (1) are connected to the bottom of a liquid inlet pipe (9), a spraying mechanism (10) and a honeycomb body (11) are alternately arranged on the surface of the liquid inlet pipe (9) in sequence, and the upper side of the liquid inlet pipe (9) is fixed to the center of the top of the tower body (1).

2. The desulfurization tower for a power plant according to claim 1, wherein: Supports (12) are equidistantly and fixedly connected to the bottom edge of the tower body (1), and an observation window (13) is arranged on the surface of the tower body (1).

3. The desulfurization tower for power plants according to claim 1, characterized in that: An air outlet pipe (14) and a liquid outlet pipe (15) are connected to the top and bottom of the tower body (1) respectively.

4. A desulfurization tower for a power plant according to claim 1, characterized in that: Through holes (16) are equidistantly formed on the surfaces of the gas outlet plate (3), the annular pipe (6), the connecting pipe (7) and the spray pipe (8).

5. A desulfurization tower for a power plant according to claim 1, characterized in that: The gas outlet plate (3) is designed as a hollow plate, and partition walls (17) are equidistantly arranged inside, and a flow buffering block (18) is integrated at the bottom of the connecting core pipe (4).

6. The desulfurization tower for a power plant according to claim 1, wherein: The spraying mechanism (10) includes a flow dividing plate (101), spray pipes (102) are equidistantly connected to the outside of the flow dividing plate (101), and spray heads (103) are connected to the outer ends of the spray pipes (102).

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