Combined heat and power generation flue gas denitration device

Abstract

The utility model discloses a combined heat and power generation flue gas denitration device, which belongs to the technical field of flue gas denitration and comprises a bottom plate and a denitration tower, a liquid inlet pipe is fixedly mounted below the side wall of the denitration tower, the tail end of the liquid inlet pipe is communicated with a circulating pump, a water outlet of the circulating pump is communicated with a first water outlet pipe and a second water outlet pipe, and the first water outlet pipe and the second water outlet pipe are communicated. A hollow plate is mounted in the denitration tower in a communicating manner, and a plurality of spray pipes are communicated with the bottom of the hollow plate; two sliding plates are symmetrically and fixedly mounted on the inner wall of the denitration tower, a rectangular frame is slidably arranged on the top surfaces of the two sliding plates, a filtering sponge is mounted in the rectangular frame, and one end of the rectangular frame slidably extends to the outer side of the denitration tower; the hollow plate communicated with the first water outlet pipe is located below the rectangular frame, and the hollow plate communicated with the second water outlet pipe is located above the rectangular frame. Compared with the prior art, the device can effectively perform denitration on the flue gas of the cogeneration, and meanwhile, the denitration effect of the flue gas is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flue gas denitration technical field especially a kind of cogeneration flue gas denitration device. BACKGROUND

[0002] Flue gas is one of the main emissions of thermal power plant, which is produced by combustion of combustible in combustor. Since flue gas usually contains a large amount of nitrogen oxides NOx and NO, these nitrogen oxides will cause very strong corrosive acid rain if directly discharged into the atmosphere, so flue gas must be treated by denitration before discharge.

[0003] The existing flue gas denitration device mostly passes flue gas directly into the inside of denitration tower, then sprays denitration liquid into the inside of denitration tower by atomizing nozzle to make it fully contact with flue gas and carry out denitration. This denitration method is prone to the situation that part of flue gas cannot be fully denitrated due to insufficient contact between denitration liquid and flue gas, thus greatly reducing the denitration effect of flue gas. Therefore, a kind of cogeneration flue gas denitration device is urgently needed to improve this problem. SUMMARY

[0004] The utility model aims at providing a kind of cogeneration flue gas denitration device to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of cogeneration flue gas denitration device, including heat and power cogeneration flue gas denitration equipment installation bottom plate and flue gas denitration with denitration tower and into smoke pipe, the side wall below of denitration tower is fixedly installed with liquid inlet pipe, and the tail end of liquid inlet pipe is connected and installed with circulating pump, the water outlet of circulating pump is connected with water outlet pipe one and water outlet pipe two, and all extend to the inside of denitration tower and are connected and installed with hollow plate, the bottom of hollow plate is connected with multiple spray pipes.

[0006] The inner wall of denitration tower is fixedly installed with two sliding plates, the top surface of two sliding plates is slidably provided with a rectangular frame, the inside of rectangular frame is installed with filter sponge, and one end of rectangular frame slidably extends to the outside of denitration tower.

[0007] The hollow plate connected by water outlet pipe one is located below rectangular frame, and the hollow plate connected by water outlet pipe two is located above rectangular frame.

[0008] Preferably, the outer wall of filter sponge is bonded with a rectangular sealing ring, and the outer wall of rectangular sealing ring is sealingly and slidably attached to the inner wall of rectangular frame.

[0009] Preferably, a limiting hole is formed through the side wall of rectangular frame, and a limiting hole is formed through the side wall of filter sponge.

[0010] Preferably, the rectangular frame and the limiting hole corresponding to the sponge sidewall are internally slidably connected with a limiting rod.

[0011] Preferably, the top surface of the two sliding plates is provided with a plurality of arc-shaped grooves, and the arc-shaped grooves are internally rotatably connected with a plurality of rolling balls.

[0012] Preferably, the outer wall of the rectangular frame is fixedly connected with a sealing gasket, and the outer wall of the sealing gasket is sealingly and slidably connected with the inner wall of the denitration tower.

[0013] Preferably, the rectangular frame is fixedly connected with a handle on one side extending to the outside of the denitration tower.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] The heat and power cogeneration flue gas denitration device, thanks to the setting of the liquid inlet pipe, the circulating pump, the water outlet pipe one, the water outlet pipe two and the two hollow plates, the circulating pump pumps the denitration liquid into the inside of the water outlet pipe one and the water outlet pipe two and into the inside of the two hollow plates, and the denitration liquid is atomized and sprayed into the inside of the denitration tower through the spray pipe communicated at the bottom of the two hollow plates, so that two-stage denitration of the flue gas is realized, and the denitration effect of the flue gas is further improved.

[0016] The heat and power cogeneration flue gas denitration device, thanks to the setting of the rectangular frame and the filter sponge, the positions of the rectangular frame and the filter sponge in the denitration tower are between the two hollow plates, so that the filter sponge is sprayed wet through the upper hollow plate and the spray pipe, the flue gas after primary denitration is filtered again through the wet filter sponge through the lower hollow plate and the spray pipe, and the denitration effect of the flue gas is further improved.

[0017] Compared with the prior art, the device can effectively denitrate the flue gas of the heat and power cogeneration, and further improve the denitration effect of the flue gas. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0019] Figure 1 It is a structural schematic view of the utility model;

[0020] Figure 2 It is a three-dimensional sectional view of the denitration tower in the utility model;

[0021] Figure 3 It is the structure schematic view of two sliding plates in the denitration tower of the utility model;

[0022] Figure 4 It is the structure schematic view of hollow plate and spray pipe in the utility model;

[0023] Figure 5 It is the connection schematic view of rectangular frame and filter sponge in the utility model;

[0024] Figure 6 It is the utility model Figure 3 The structure enlarged schematic view of A part in the utility model.

[0025] Mark explanation:

[0026] In the drawing: 1, bottom plate; 2, denitration tower; 3, liquid inlet pipe; 4, circulating pump; 5, water outlet pipe one; 6, water outlet pipe two; 7, smoke inlet pipe; 8, rectangular frame; 9, filter sponge; 10, handle; 11, hollow plate; 12, spray pipe; 13, sliding plate; 14, rectangular sealing ring; 15, limiting rod; 16, limiting hole; 17, ball; 18, sealing gasket. Specific implementation

[0027] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0028] Unless the direction indicated by the single definition, the directions such as up, down, left, right, front, back, inside and outside involved in this article are based on the directions such as up, down, left, right, front, back, inside and outside in the drawing shown by the utility model, which is explained here.

[0029] The connection mode can adopt existing modes such as bonding, welding, bolt connection and the like, and the actual needs are accurate.

[0030] As Figures 1 to 6 The main structure of the combined heat and power flue gas denitration device shown in the utility model is a bottom plate 1 for installing combined heat and power flue gas denitration equipment and a denitration tower 2 for flue gas denitration and a smoke inlet pipe 7, a certain amount of denitration liquid needs to be filled in the denitration tower 2 in advance, the smoke inlet pipe 7 is communicated and installed below the side wall of the denitration tower 2 and is located above the liquid level of the denitration liquid filled in the denitration tower 2;

[0031] The side wall of the denitration tower 2 is fixedly provided with an inlet pipe 3, and the end of the inlet pipe 3 is communicated with a circulating pump 4, the outlet of the circulating pump 4 is communicated with a water outlet pipe one 5 and a water outlet pipe two 6, and both extend to the inside of the denitration tower 2 and are communicated with a hollow plate 11, the bottom of the hollow plate 11 is communicated with a plurality of spray pipes 12, thanks to the arrangement of the inlet pipe 3, the circulating pump 4, the water outlet pipe one 5, the water outlet pipe two 6 and the two hollow plates 11, the circulating pump 4 pumps the denitration liquid into the inside of the water outlet pipe one 5 and the water outlet pipe two 6 and into the inside of the two hollow plates 11, and the denitration liquid is atomized and sprayed into the inside of the denitration tower 2 through the spray pipes 12 communicated with the bottom of the two hollow plates 11, so as to realize two-stage denitration of the flue gas, thereby further improving the denitration effect of the flue gas.

[0032] The inner wall of the denitration tower 2 is fixedly provided with two sliding plates 13, the top surface of the two sliding plates 13 is slidingly provided with a rectangular frame 8, the inside of the rectangular frame 8 is provided with a filter sponge 9, and one end of the rectangular frame 8 slidingly extends to the outside of the denitration tower 2, the hollow plate 11 communicated with the water outlet pipe one 5 is located below the rectangular frame 8, and the hollow plate 11 communicated with the water outlet pipe two 6 is located above the rectangular frame 8, thanks to the arrangement of the rectangular frame 8, the filter sponge 9 and other structures, the position of the rectangular frame 8 and the filter sponge 9 in the denitration tower 2 is between the two hollow plates 11, so that the filter sponge 9 is sprayed wet through the upper hollow plate 11 and the spray pipe 12, and the flue gas after preliminary denitration is filtered again through the wet filter sponge 9 through the lower hollow plate 11 and the spray pipe 12, thereby further improving the denitration effect of the flue gas.

[0033] The outer wall of the filter sponge 9 is bonded with a rectangular sealing ring 14, and the outer wall of the rectangular sealing ring 14 is sealingly and slidingly attached to the inner wall of the rectangular frame 8, thanks to the arrangement of the rectangular sealing ring 14, which can effectively improve the sealing effect between the filter sponge 9 and the inner wall of the rectangular frame 8, thereby further preventing the flue gas from being discharged from the denitration tower 2 without being filtered by the filter sponge 9.

[0034] The side wall of the rectangular frame 8 is provided with a limiting hole 16, and the side wall of the filter sponge 9 is provided with a limiting hole 16 corresponding to the rectangular frame 8, and the limiting hole 16 corresponding to the side wall of the rectangular frame 8 and the filter sponge 9 is slidingly inserted with a limiting rod 15, thanks to the arrangement of the plurality of limiting rods 15, which can further improve the stability of the connection between the rectangular frame 8 and the filter sponge 9.

[0035] The top surface of the two sliding plates 13 is provided with a plurality of arc-shaped grooves, and a plurality of rolling balls 17 are rollingly installed in the plurality of arc-shaped grooves, thanks to the arrangement of the plurality of rolling balls 17, which can effectively reduce the friction between the sliding plate 13 and the rectangular frame 8, thereby facilitating the rectangular frame 8 to be pulled out of the inside of the denitration tower 2.

[0036] The outer wall of the rectangular frame 8 is fixedly bonded with a sealing gasket 18, and the outer wall of the sealing gasket 18 is sealingly attached to the inner wall of the denitration tower 2. Thanks to the sealing gasket 18, the sealing between the outer wall of the rectangular frame 8 and the inner wall of the denitration tower 2 can be achieved, and the effect of filtering and denitration of the flue gas by the filtering sponge 9 can be further improved.

[0037] The side of the rectangular frame 8 extending to the outside of the denitration tower 2 is fixedly installed with a handle 10, and the handle 10 can facilitate pulling of the rectangular frame 8.

[0038] Working principle

[0039] In use, the flue gas generated during combined heat and power generation is first introduced into the inside of the denitration tower 2 through the flue gas inlet pipe 7, then the denitration liquid at the bottom of the denitration tower 2 is pumped into the inside of the water outlet pipe one 5 and the water outlet pipe two 6 by the circulating pump 4, then the denitration liquid is introduced into the inside of the two hollow plates 11 in the denitration tower 2, then the denitration liquid is atomized and sprayed into the inside of the denitration tower 2 by the plurality of spray pipes 12 communicated and installed at the bottom of the hollow plate 11, at the same time, the filtering sponge 9 is sprayed wet by the upper hollow plate 11, so that the denitration liquid sprayed by the lower hollow plate 11 and the spray pipe 12 can preliminarily denitrate the flue gas, then the flue gas moves upward and passes through the wet filtering sponge 9, so that the flue gas is denitrated again by the filtering sponge 9 and the denitration liquid in the filtering sponge 9, so as to further improve the denitration effect of the flue gas, and then the flue gas is discharged through the flue gas outlet pipe on the top surface of the denitration tower 2 after the denitration is completed.

[0040] It should be noted that, in this document, relational terms such as one and the other and at least one of are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying that each modified entity or action must exist separately from another entity or action. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, inclusion of an element in a list of elements does not exclude the existence of additional identical elements in the process, method, article, or apparatus.

[0041] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A combined heat and power flue gas denitration device, comprising a combined heat and power flue gas denitration equipment installation bottom plate (1) and a flue gas denitration denitration tower (2) and a flue gas inlet pipe (7), characterized in that: The liquid inlet pipe (3) is fixedly installed below the sidewall of the denitration tower (2), the terminal of the liquid inlet pipe (3) is communicatedly installed with the circulating pump (4), the water outlet of the circulating pump (4) is communicated with the water outlet pipe one (5) and the water outlet pipe two (6), and the water outlet pipe one (5) and the water outlet pipe two (6) extend to the inside of the denitration tower (2) and are communicatedly installed with the hollow plate (11), the bottom of the hollow plate (11) is communicated with a plurality of spray pipes (12); The inner wall of the denitration tower (2) is symmetrically fixedly installed with two sliding plates (13), the top surface of the two sliding plates (13) is slidably provided with a rectangular frame (8), the inside of the rectangular frame (8) is installed with a filter sponge (9), and one end of the rectangular frame (8) slidably extends to the outside of the denitration tower (2). The hollow plate (11) communicated by the water outlet pipe one (5) is located below the rectangular frame (8), and the hollow plate (11) communicated by the water outlet pipe two (6) is located above the rectangular frame (8).

2. The device for flue gas denitration in combined heat and power according to claim 1, characterized in that: The outer wall of the filter sponge (9) is bonded with a rectangular sealing ring (14), and the outer wall of the rectangular sealing ring (14) is sealingly and slidably attached to the inner wall of the rectangular frame (8).

3. The device for flue gas denitration in combined heat and power according to claim 1, characterized in that: The sidewall of the rectangular frame (8) is correspondingly provided with a limiting hole (16), and the sidewall of the filter sponge (9) is correspondingly provided with a limiting hole (16).

4. The device for flue gas denitration in combined heat and power according to claim 3, characterized in that: The limiting hole (16) correspondingly provided in the sidewall of the rectangular frame (8) and the filter sponge (9) is slidably inserted with a limiting rod (15).

5. The device for flue gas denitration in combined heat and power according to claim 1, characterized in that: The top surface of the two sliding plates (13) is provided with a plurality of arc-shaped grooves, and a plurality of rolling balls (17) are rollingly installed in the plurality of arc-shaped grooves.

6. The device for flue gas denitration of a combined heat and power plant according to claim 1, characterized in that: The outer wall of the rectangular frame (8) is fixedly bonded with a sealing gasket (18), and the outer wall of the sealing gasket (18) is sealingly and slidably attached to the inner wall of the denitration tower (2).

7. The device according to claim 1, characterized in that: The side, to which the rectangular frame (8) extends to the outside of the denitration tower (2), is fixedly installed with a handle (10).

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