Coarse absorption device for flue gas desulfurization of power plant

Abstract

The utility model discloses a coarse absorption device for flue gas desulfurization in a power plant. The coarse absorption device comprises a machine body and supporting legs, due to the adoption of the flow baffle cover and the multi-stage cylinder, after smoke is introduced, the smoke is firstly discharged from the air outlet holes in the surface of the air supply pipe at the bottom of the machine body and then dispersed in limestone slurry around the smoke, so that the first contact absorption is realized; according to the present invention, the primary treatment is performed on the flue gas, such that the dispersion path of the flue gas is increased so as to delay the retention time of the flue gas in the slurry, such that the sufficient absorption reaction can be conveniently performed, the flue gas after the primary treatment enters the multi-stage cylinder through the gas collecting hood, and the special structure of the multi-stage cylinder enables the upward flowing small amount of the flue gas to be excessively treated by the large amount of the slurry, and the flue gas can be fully absorbed, and excessive slurry can fall to the lower part to supplement the concentration of the slurry, so that the waste is avoided, the overall treatment effect is improved, and the multi-stage absorption device has the advantages of multi-stage absorption, good treatment effect and full contact.

Description

TECHNICAL FIELD

[0001] The utility model relates to flue gas desulfurization equipment technical field, concretely related to a kind of coarse absorption device for power plant smoke desulfurization. BACKGROUND

[0002] In coal-fired power plant, the flue gas needs to be desulfurized, and the flue gas desulfurization tower is the key equipment, which has been widely used in engineering. The principle of wet flue gas desulfurization tower is to use limestone alkaline slurry to spray from top to bottom, and the flue gas flows from bottom to top. The limestone slurry droplets absorb sulfur dioxide in the flue gas during the falling process, achieving the purpose of removing sulfur dioxide in the flue gas. The existing flue gas desulfurization tower sprays limestone slurry mainly by using the spray head to spray the limestone slurry in the absorption tower, and the sprayed limestone slurry fully reacts with the sulfur dioxide in the flue gas.

[0003] In the prior art, the application number is CN202322331553.2, a flue gas desulfurization tower, including a processing box and an air inlet part, the top of the processing box is open, and the inside of the processing box is filled with desulfurization liquid. The air inlet part includes a cover, which is arranged on the open end of the processing box and fixedly connected to the open end of the processing box by bolts. A gas inlet pipe is vertically connected to one side of the cover, and one end of the gas inlet pipe penetrates the bottom surface of the cover and is inserted into the inside of the processing box. The other end of the gas inlet pipe is connected to a filter, which is used to filter dust in the flue gas. A wind pump is fixedly connected to the gas inlet pipe, and an exhaust pipe is fixedly connected to the top surface of the cover.

[0004] However, the above-mentioned patent still has some disadvantages in use: the measures for desulfurization inside are relatively single, and the sprayed flue gas rises directly, lacks blocking measures, and the residence time of flue gas in the device is short. If the import speed is too fast, it is easy to cause insufficient contact between flue gas and limestone slurry, thereby affecting the overall desulfurization treatment quality and the use effect is not very ideal.

[0005] For the problems in the related art, there is no effective solution at present. UTILITY MODEL CONTENTS

[0006] (I) Technical problem solved

[0007] In view of the shortcomings of the prior art, the utility model provides a coarse absorption device for power plant smoke desulfurization, which has the advantages of multi-stage absorption, good treatment effect and sufficient contact, thereby solving the problems in the above background technology.

[0008] (II) Technical scheme

[0009] To achieve the above-mentioned advantages of multi-stage absorption, good treatment effect and sufficient contact, the utility model adopts the following specific technical scheme:

[0010] The utility model provides a kind of power plant smoke desulfurization is used rough absorption device, including body and support leg, the sealing plate is fixedly installed in the middle position inside the body, the installation plate is connected in the position of one side inside the body below the sealing plate, the installation plate bottom position is evenly installed with several groups of gas supply pipe, the gas supply pipe is connected with air inlet pipe by pipeline between, the gas supply pipe outer periphery is equipped with flow shield in the installation plate bottom position, the flow shield inner surface and the outer surface position of gas supply pipe are evenly installed with several groups of flow baffle, the sealing plate bottom surface position is evenly installed with several groups of gas-collecting hood, the gas-collecting hood one end penetrates the side of sealing plate and is connected with multistage cylinder, the multistage cylinder inner surface position is evenly installed with several groups of shower head.

[0011] Further, the body inside bottom end position is installed drive disc, the drive disc one end penetrates the side of body and is connected with motor, the drive disc surface position is installed with several groups of stirring vane.

[0012] Further, the body top position is installed exhaust pipe.

[0013] Further, the body one side surface top position is installed with liquid supply pipe, and the liquid supply pipe is connected with shower head and body inside bottom end position respectively by pipeline.

[0014] Further, the body one side surface bottom end position is installed with liquid outlet pipe.

[0015] Further, the body bottom two side positions are symmetrically installed with support leg.

[0016] Further, the surface top position of gas supply pipe is surrounded and is opened with several groups of air outlet hole.

[0017] Further, the air inlet pipe is located in the middle position of body surface.

[0018] (Three) beneficial effects

[0019] Compared with prior art, the utility model provides a kind of power plant smoke desulfurization is used rough absorption device, with following beneficial effects:

[0020] (1), the utility model discloses a baffle, multistage cylinder is adopted after the flue gas is introduced, and the flue gas will first be discharged from the air outlet hole on the surface of the gas supply pipe at the bottom of the machine body, and then enter the limestone slurry around it, realize the first contact absorption, because the flue gas is blocked by the multiple baffle when discharging, make the dispersion path of flue gas increase, thereby delay its residence time in the slurry, facilitate more fully absorption reaction, then the flue gas of preliminary treatment completion will enter the multistage cylinder through the gas collecting cover, because the special structure of multistage cylinder will make the small amount of flue gas upflow be treated by excessive slurry, thereby guarantee that the flue gas can be fully absorbed, and the excessive slurry will fall to the concentration of the below replenishing slurry, avoid waste, and improve the overall processing effect, have multistage absorption, processing effect is good, and the advantages such as contact is sufficient. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0022] Figure 1 It is a kind of structure schematic diagram of the coarse absorption device for power plant flue gas desulfurization proposed in the utility model;

[0023] Figure 2 It is the internal structure schematic diagram of the machine body of the utility model;

[0024] Figure 3 It is the sectional view of the baffle of the utility model;

[0025] Figure 4 It is the sectional view of the multistage cylinder of the utility model.

[0026] In the drawing:

[0027] 1, machine body;2, multistage cylinder;3, spray head;4, exhaust pipe;5, liquid supply pipe;6, gas collecting cover;7, sealing plate;8, mounting plate;9, air inlet pipe;10, gas supply pipe;11, baffle;12, baffle;13, stirring vane;14, support leg;15, motor;16, driving disc;17, liquid outlet pipe;18, air outlet hole. DETAILED DESCRIPTION

[0028] To further illustrate the embodiments, the utility model provides has the drawing, these drawings are part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate with the related description of the specification to explain the operation principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the drawing are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0029] According to the embodiment of the utility model, a kind of crude absorption device for power plant smoke desulfurization is provided.

[0030] The utility model is further illustrated by combining with the specific embodiment and the drawing, as shown in Figures 1-4 According to the crude absorption device for power plant smoke desulfurization of the utility model embodiment, it includes body 1 and support leg 14, sealing plate 7 is fixedly installed in the middle position inside body 1, installation plate 8 is connected with the position of one side in body 1 below sealing plate 7, several groups of gas supply pipe 10 are evenly installed in the bottom position of installation plate 8, gas supply pipe 10 is connected with inlet pipe 9 by pipeline between them, flow shield 11 is sleeved with the bottom position of installation plate 8 outside gas supply pipe 10, several groups of flow baffle 12 are evenly installed on the inner surface of flow shield 11 and the outer surface of gas supply pipe 10 position, several groups of gas collecting hood 6 are evenly installed on the bottom surface of sealing plate 7 position, gas collecting hood 6 one end penetrates the side of sealing plate 7 and is connected with multistage cylinder 2, several groups of spray head 3 are evenly installed on the inner surface of multistage cylinder 2 position, multistage cylinder 2 is made of multiple groups of concentric cylinder structure, and the structure is big at top and small at bottom, which can ensure that a small amount of flue gas entering below can be reacted by a large amount of slurry, improve the overall desulfurization effect, and facilitate subsequent better use.

[0031] In one embodiment, drive disc 16 is installed in the bottom end position inside body 1, one end of drive disc 16 penetrates the side of body 1 and is connected with motor 15, and several groups of stirring blades 13 are installed on the surface of drive disc 16 position. The setting of drive disc 16 is to drive the internal slurry by rotating, thereby improving the fluidity of the slurry, so that the slurry can fully contact with the flue gas, thereby improving the overall flue gas desulfurization effect.

[0032] In one embodiment, exhaust pipe 4 is installed on the top position of body 1. The setting of exhaust pipe 4 is to discharge the flue gas after desulfurization for use, so as to facilitate subsequent treatment of the flue gas.

[0033] In one embodiment, liquid supply pipe 5 is installed on the top position of the side surface of body 1. Liquid supply pipe 5 is connected with spray head 3 and the bottom end position inside body 1 respectively by pipeline. The setting of liquid supply pipe 5 is to introduce limestone slurry used for reaction for use.

[0034] In one embodiment, the body 1 side surface bottom end position is provided with a liquid outlet pipe 17, which facilitates the device to discharge the used limestone slurry, and facilitates the cleaning of the equipment.

[0035] In one embodiment, the body 1 bottom two sides are symmetrically provided with support legs 14, which can fix the device as a whole, and facilitate the use stability.

[0036] In one embodiment, a plurality of gas outlet holes 18 are formed around the surface top of the gas supply pipe 10, which is arranged to discharge flue gas, thereby facilitating subsequent contact reaction with limestone slurry.

[0037] In one embodiment, the gas inlet pipe 9 is located at the middle position of the surface of the body 1, and the position of the gas inlet pipe 9 is arranged to avoid the backflow of limestone slurry into the gas inlet pipe 9, to ensure that the flue gas can be discharged smoothly, thereby ensuring that the subsequent desulfurization absorption can be carried out normally.

[0038] Working principle: in actual use, personnel can use the liquid supply pipe 5 to respectively spray and fill the limestone slurry used for flue gas desulfurization treatment into the inside bottom end position of the body 1 through the nozzle 3, and the liquid supply pipe 5 adopts the form of three-way pipe, and the pipelines on both sides are controlled by valves, then the flue gas can be introduced through the gas inlet pipe 9, at this time the introduced flue gas will enter the multiple gas supply pipes 10 through the pipeline inside the mounting plate 8, and be discharged from the gas outlet holes 18 on the top surface of the gas supply pipe 10, at this time the discharged gas outlet holes 18 will penetrate into the limestone slurry to react with it, and the outside of the gas outlet holes 18 is provided with multiple inclined structure baffle plates 12, so that the gas is blocked in the baffle cover 11, thereby prolonging the residence time of the flue gas and improving the contact effect of the flue gas with the limestone slurry, thereby improving the overall reaction absorption quality, and the limestone slurry can be driven to flow by the stirring blade 13, further expanding the contact area with the flue gas, then the flue gas after a certain adsorption will flow out of the limestone slurry and flow upward through the gas collecting cover 6, since the gas collecting cover 6 is directly connected with the multi-stage cylinder 2, and the multi-stage cylinder 2 has a structure of large size at the top and small size at the bottom, therefore the small amount of gas flowing out of the bottom will be excessively adsorbed by the limestone slurry sprayed by the multiple nozzles 3, and the limestone slurry which has not been fully utilized can naturally fall to the bottom of the body 1, thereby realizing the replenishment of the limestone slurry at the bottom, ensuring that the flue gas can be treated, and the device can effectively improve the treatment effect of the flue gas through the cooperation of multiple structures, and ensure the absorption effect through sufficient structure and reaction, thereby facilitating better use, and the device has the advantages of multi-stage absorption, good treatment effect and sufficient contact.

[0039] In the utility model, unless another explicit provision and limitation, the terms "mount", "arrange", "connect", "fix", "screw" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or become an integral whole, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through the intermediate medium, can be two element inside the intercommunication or two element's mutual action relation, unless another explicit limitation, for the ordinary skill in the art, can understand the concrete meaning of the above terms in the utility model according to specific circumstances.

[0040] The above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A coarse absorption device for flue gas desulfurization in a power plant, comprising a body (1) and support legs (14), characterized in that, The inside middle position of the machine body (1) is fixedly installed with a sealing plate (7), the lower side of the sealing plate (7) is connected with a mounting plate (8) inside the machine body (1), the bottom of the mounting plate (8) is uniformly installed with a plurality of groups of gas supply pipes (10), the gas supply pipes (10) are connected with the air inlet pipe (9) through pipelines, the outer periphery of the gas supply pipe (10) is sleeved with a flow shield (11) at the bottom position of the mounting plate (8), a plurality of groups of flow baffles (12) are uniformly and obliquely installed on the inner surface of the flow shield (11) and the outer surface of the gas supply pipe (10), a plurality of groups of gas collecting covers (6) are uniformly installed on the bottom surface of the sealing plate (7), one end of the gas collecting cover (6) penetrates through one side of the sealing plate (7) and is connected with the multi-stage cylinder (2), a plurality of groups of spray heads (3) are uniformly and circumferentially installed on the inner surface of the multi-stage cylinder (2).

2. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, The bottom end of the machine body (1) is installed with a driving disc (16), one end of the driving disc (16) penetrates through one side of the machine body (1) and is connected with a motor (15), a plurality of groups of stirring blades (13) are circumferentially installed on the surface of the driving disc (16).

3. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, The top of the machine body (1) is installed with an exhaust pipe (4).

4. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, The top of the surface of one side of the machine body (1) is installed with a liquid supply pipe (5), the liquid supply pipe (5) is connected with the spray head (3) and the bottom end inside the machine body (1) through pipelines respectively.

5. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, The bottom end of the surface of one side of the machine body (1) is installed with a liquid outlet pipe (17).

6. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, The bottom of the machine body (1) is symmetrically installed with supporting legs (14) on both sides.

7. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, A plurality of groups of air outlet holes (18) are circumferentially formed on the top of the surface of the gas supply pipe (10).

8. A crude absorption device for flue gas desulfurization of a power plant according to claim 1, characterized in that, The air inlet pipe (9) is located at the middle position of the surface of the machine body (1).

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