Hot air distributor for desulfurization wastewater zero discharge and flue gas purification system

Abstract

The utility model discloses a hot air distributor for desulfurization waste water zero discharge and flue gas purification system, which comprises a flue gas inlet volute and a flue gas inlet distributor arranged at the bottom of the flue gas inlet volute, a flue gas inlet is arranged on the flue gas inlet volute, a flue is arranged in an inner cavity of the flue gas inlet volute along the path of the flue, and the flue gas inlet distributor is arranged on the flue gas inlet volute. Two guide pieces are arranged on the inner wall of the flue, a smoke outlet communicated with the flue is formed in the inner side wall of the bottom of the smoke inlet volute, the smoke inlet distributor comprises an inner cone, and the inner cone is provided with a heat insulation measure. According to the utility model, air or flue gas is uniformly distributed through the inlet flue gas distributor, so that good gas flow field distribution is realized when the air or the flue gas enters a container, the phenomenon of non-uniform gas distribution of the existing gas distributor is avoided, and the air is uniformly distributed through the two stages of guide vanes after entering the inlet flue gas distributor; the first guide vane ensures the uniformity of gas entering the second guide vane, and the second guide vane enables the air to form a swirling flow field given by design after entering the container through angle design.

Description

Technical Field

[0001] The utility model belongs to the technical field of flue gas distributors, and in particular relates to a hot air distributor used in a desulfurization wastewater zero-discharge and flue gas purification system. Background Art

[0002] The flue gas distributor is a device that makes the gas introduced into the gas-liquid evaporation drying device evenly distributed over the entire cross section. The flue gas distributor is called the distributor area. The contact performance between the gas and the cylinder, especially the uniform distribution performance, is greatly affected by the classification and structure of the gas distributor. The gas distributor is one of the most important components of the desulfurization wastewater zero emission and flue gas purification system.

[0003] The desulfurization tower / drying tower is a key equipment for the spray drying evaporation process desulfurization and desulfurization wastewater spray drying (zero emission) device. The reaction process is completed inside the desulfurization tower / drying tower. The flue gas distributor on the top of the desulfurization tower / drying tower plays a very important role in desulfurization / spray drying. The contact time, contact area, and uniformity of the internal flue gas flow field between the flue gas and the slaked lime slurry / desulfurization wastewater are all key factors affecting the desulfurization / spray drying efficiency. The flue gas distributor also affects the resistance of the system, and ultimately affects the operating costs.

[0004] The current flue gas distributor only guides the flue gas into the desulfurization tower / drying tower. It is difficult to ensure that the flue gas is optimally guided and distributed after passing through the distributor, and the resistance is minimal. The airflow may be turbulent and uneven, resulting in insufficient contact between the desulfurization tower / drying tower and the slaked lime slurry / desulfurization wastewater, and the contact time is too short, which in turn affects the desulfurization and drying efficiency. Utility Model Content

[0005] The utility model aims to provide a hot air distributor for a desulfurization wastewater zero-discharge and flue gas purification system to solve the technical problems raised in the background technology.

[0006] To achieve the above-mentioned objectives, the specific technical scheme of the utility model is as follows: a hot air distributor for a desulfurization wastewater zero emission and flue gas purification system, comprising a smoke inlet volute and a smoke inlet distributor arranged at the bottom of the smoke inlet volute, the smoke inlet volute is provided with a smoke inlet port on the top, and a flue is provided along the path of the inner cavity of the smoke inlet volute, the inner wall of the flue is provided with two guide plates, and the bottom inner wall of the smoke inlet volute is provided with a smoke exhaust port communicating with the flue, the smoke inlet distributor comprises an inner cover body, the outer side of the inner cover body is provided with a guide cone, the outer side of the guide cone is provided with an outer cover body, the top of the guide cone is provided with an annular guide vane, the side wall of the annular guide vane is provided with an annular opening, a plurality of first guide vanes distributed in a circular array are provided in the annular opening, a plurality of second guide vanes distributed in a circular array are provided in the inner and outer walls of the guide cone, and two ash guide pipes are provided on the side wall of the smoke inlet volute.

[0007] Preferably, the guide piece has an arc-shaped structure.

[0008] Preferably, the inner wall of the smoke exhaust port is provided with a plurality of blades that are evenly and orderly distributed, and the first guide vane and the second guide vane are arranged at an angle of 15-90° to the axis of the guide cone.

[0009] Preferably, the outer cover, the inner cover and the guide cone are all conical structures.

[0010] Preferably, there is a distance between the outer cover and the guide cone, there is a distance between the guide cone and the inner cover, a first smoke outlet is formed between the inner cover and the bottom of the guide cone, and a second smoke outlet is formed between the guide cone and the bottom of the outer cover.

[0011] Preferably, the first guide vane and the second guide vane are both arc-shaped structures, and the first guide vane and the second guide vane are inclined in opposite directions.

[0012] The utility model is a hot air distributor for desulfurization wastewater zero discharge and flue gas purification system, which has the following advantages:

[0013] 1. The utility model distributes air or smoke evenly through the smoke inlet distributor, so that there is a good gas flow field distribution when entering the container, avoiding the uneven gas distribution phenomenon of the existing gas distributor. After the air enters the smoke inlet distributor, it is evenly distributed through the two-stage guide vanes. The first guide vane ensures the uniformity of the gas entering the second guide vane. The second guide vane is designed with an angle so that the air forms a designed swirl field after entering the container.

[0014] 2. The smoke enters in a spiral shape from the smoke inlet of the smoke inlet volute, which increases the smoke stroke and prolongs the smoke residence time. The guide plate is set to guide the smoke, and the guide plate is an arc-shaped structure, so that the distance between the guide plate and the inner wall of the flue gradually decreases, thereby effectively reducing the flow rate of smoke entering, thereby ensuring uniform distribution of the smoke in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0018] Figure 3 This is a structural schematic diagram of the smoke inlet volute in the utility model;

[0019] Figure 4 for Figure 3 A top view of

[0020] Figure 5 This is a schematic diagram of the structure of the smoke distributor in the utility model;

[0021] Figure 6 for Figure 5 Exploded diagram of

[0022] Explanation of markings in the figure: 1. Smoke inlet volute; 2. Smoke inlet distributor; 3. Smoke inlet port; 4. Outer cover; 5. Guide cone; 6. Inner cover; 7. First smoke outlet; 8. Second smoke outlet; 9. Smoke exhaust port; 10. Blade; 11. Guide piece; 12. Annular guide vane; 13. Annular port; 14. First guide vane; 15. Second guide vane; 16. Ash guide pipe. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the embodiments of the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0026] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of the hot air distributor of the utility model for zero emission of desulfurization wastewater and flue gas purification system in conjunction with the accompanying drawings.

[0029] like Figure 1-6As shown, the utility model is a hot air distributor for a zero-emission desulfurization wastewater and flue gas purification system, comprising a smoke inlet volute 1 and a smoke inlet distributor 2 arranged at the bottom of the smoke inlet volute 1, a smoke inlet port 3 is arranged on the top of the smoke inlet volute 1, and a flue is arranged along the path of the inner cavity of the smoke inlet volute 1, and two guide pieces 11 are arranged on the inner wall of the flue, and the guide pieces 11 are in an arc-shaped structure. The flue gas enters in a spiral shape from the smoke inlet port 3 of the smoke inlet volute 1, which increases the smoke stroke and prolongs the smoke residence time. The guide pieces 11 are arranged to guide the smoke, and the guide pieces 11 are in an arc-shaped structure, so that the distance between the guide pieces 11 and the inner wall of the flue is gradually reduced, thereby effectively reducing the flow rate of the smoke entering, thereby ensuring that the smoke is evenly distributed in the later stage.

[0030] The bottom inner wall of the smoke inlet volute 1 is provided with a smoke exhaust port 9 communicated with the flue, and the inner wall of the smoke exhaust port 9 is provided with a plurality of blades 10 evenly and orderly distributed. The smoke exhaust port 9 is divided into a plurality of openings of equal size by the plurality of evenly and orderly distributed blades 10, thereby ensuring that the smoke entering the smoke inlet volute 1 can evenly enter the smoke inlet distributor 2 from each opening. The smoke inlet distributor 2 includes an inner cover body 6, the outer side of the inner cover body 6 is provided with a guide cone 5, the outer side of the guide cone 5 is provided with an outer cover body 4, the outer cover body 4, the guide cone 5 and the inner cover body 6 are all conical structures, there is a spacing between the outer cover body 4 and the guide cone 5, there is a spacing between the guide cone 5 and the inner cover body 6, and a first smoke outlet 7 is formed between the inner cover body 6 and the bottom of the guide cone 5, and a second smoke outlet 8 is formed between the guide cone 5 and the bottom of the outer cover body 4, and an annular guide vane 12 is provided at the top of the guide cone 5, and the side wall of the annular guide vane 12 is provided with an annular opening 1 3. A plurality of first guide vanes 14 distributed in a circumferential array are arranged in the annular opening 13, and a plurality of second guide vanes 15 distributed in a circumferential array are arranged on the inner and outer walls of the guide cone 5. The first guide vanes 14 and the second guide vanes 15 are both arc-shaped structures, and the first guide vanes 14 and the second guide vanes 15 are inclined in opposite directions. The smoke entering the smoke distributor 2 will first enter the annular opening 13. Since a plurality of first guide vanes 14 distributed in a circumferential array are distributed in the annular opening 13, it is ensured that the smoke enters between the inner cover body 6 and the guide cone 5 and the guide cone 5 uniformly. In the gap between the outer cover 4, because the inner wall and the outer wall of the guide cone 5 are both provided with a plurality of second guide vanes 15 distributed in a circumferential array, these gaps are divided into a plurality of flow channels of equal size, so that the flue gas is evenly distributed in these flow channels, and finally discharged through the first smoke outlet 7 and the second smoke outlet 8, and fully reacts and dries with the atomized desulfurizer discharged by the atomizer (or desulfurized wastewater), avoiding excess desulfurizer, causing wall formation (or wastewater evaporation is not dry), and also enabling the flue gas to be completely purified by the desulfurizer (or wastewater is dried by hot air Dry), and because the first guide vane 14 and the second guide vane 15 are inclined in opposite directions, a cyclone field is formed in the flow channel, and the air or smoke is evenly distributed through the smoke inlet distributor 2, so that there is a good gas flow field distribution when entering the container, avoiding the uneven gas distribution phenomenon of the existing gas distributor. After the air enters the smoke inlet distributor 2, it is evenly distributed by the two-stage guide vanes. The first guide vane 14 ensures the uniformity of the gas entering the second guide vane 15. The second guide vane 15 is designed at an angle so that a cyclone field given by the design is formed after the air enters the container.

[0031] Two ash guide pipes 16 are arranged on the side wall of the smoke inlet volute 1. Hot air enters the smoke inlet volute 1 through the smoke inlet port 3 and is guided by the guide plate 11. Dust falling into the bottom of the smoke inlet volute 1 in the hot air is discharged into the container through the ash guide pipe 16 through the guide plate 11 due to the centrifugal force of the hot air in the smoke inlet volute 1.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A hot air distributor for zero-emission desulfurization wastewater and flue gas purification system, characterized by: The invention comprises a smoke inlet volute (1) and a smoke inlet distributor (2) arranged at the bottom of the smoke inlet volute (1), wherein a smoke inlet port (3) is arranged on the top of the smoke inlet volute (1), and a smoke duct is arranged along the inner cavity of the smoke inlet volute (1), and the inner wall of the smoke duct is provided with two guide plates (11), and the inner side wall of the bottom of the smoke inlet volute (1) is provided with a smoke exhaust port (9) communicated with the smoke duct, and the smoke inlet distributor (2) comprises an inner cover body (6), and the outer side of the inner cover body (6) is provided with a guide cone (5) The guide cone (5) is sleeved with an outer cover (4) on its outer side, an annular guide vane (12) is arranged at the top of the guide cone (5), an annular opening (13) is arranged on the side wall of the annular guide vane (12), a plurality of first guide vanes (14) distributed in a circumferential array are arranged in the annular opening (13), a plurality of second guide vanes (15) distributed in a circumferential array are arranged on the inner and outer side walls of the guide cone (5), and two ash guide pipes (16) are arranged on the side wall of the smoke inlet volute (1).

2. A hot air distributor for a desulfurization wastewater zero discharge and flue gas purification system according to claim 1, characterized in that: The guide piece (11) is in an arc-shaped structure.

3. A hot air distributor for a desulfurization wastewater zero discharge and flue gas purification system according to claim 1, characterized in that: The inner wall of the smoke exhaust port (9) is provided with a plurality of blades (10) that are evenly and orderly distributed, and the first guide vane (14) and the second guide vane (15) are arranged at an angle of 15-90° to the axis of the guide cone (5).

4. A hot air distributor for a desulfurization wastewater zero discharge and flue gas purification system according to claim 1, characterized in that: The outer cover body (4), the guide cone (5) and the inner cover body (6) are all conical structures.

5. A hot air distributor for a desulfurization wastewater zero discharge and flue gas purification system according to claim 1, characterized in that: There is a spacing between the outer cover body (4) and the guide cone (5), there is a spacing between the guide cone (5) and the inner cover body (6), a first smoke outlet (7) is formed between the inner cover body (6) and the bottom of the guide cone (5), and a second smoke outlet (8) is formed between the guide cone (5) and the bottom of the outer cover body (4).

6. A hot air distributor for a desulfurization wastewater zero discharge and flue gas purification system according to claim 1, characterized in that: The first guide vane (14) and the second guide vane (15) are both arc-shaped structures, and the first guide vane (14) and the second guide vane (15) are inclined in opposite directions.

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