Flue gas deodorization device

Abstract

The utility model relates to the technical field of anaerobic biological fermentation, in particular to a flue gas deodorization device. The flue gas deodorization device comprises the cooling tank and the deodorization tower, the cooling water inlet and the flue gas outlet are formed in the upper portion of the cooling tank, the cooling water outlet and the flue gas inlet are formed in the lower portion of the cooling tank, the cooling water inlet is used for introducing cooling water into the cooling tank, and the flue gas inlet is used for introducing flue gas into the cooling tank; the cooling water outlet is used for discharging the cooling water, the flue gas outlet is used for discharging the flue gas, and the deodorization tower is communicated with the flue gas outlet, that is, the flue gas is cooled through the cooling tank before entering the deodorization tower, and in the process, saturated water in the flue gas is separated out along with the reduction of the temperature of the flue gas; meanwhile, organic matters with peculiar smell such as volatile acid in the flue gas are separated out along with the separation of the saturated water, so that the content of the volatile acid in the flue gas is reduced, and the use of alkali liquor in the deodorization tower can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anaerobic biological fermentation, in particular to a flue gas deodorization device. Background Art

[0002] After biological fermentation, protein feed is extracted by spray drying. Under such process conditions, gases with unpleasant acidic odors will be generated, which need to be deodorized through a deodorization tower. The deodorization tower is provided with lye to remove sulfides and acetate substances in the high-temperature flue gas, so as to achieve the purpose of deodorization. In related technologies, the gas is alkali-washed by the deodorization tower and discharged up to standard after being neutralized with acidic substances. However, this treatment method requires a large amount of lye, resulting in a high gas treatment cost. Summary of the Utility Model

[0003] This application provides a flue gas deodorization device, which improves the technical problem that a large amount of lye is required for alkali-washing the gas by the deodorization tower in related technologies.

[0004] An embodiment of this application provides a flue gas deodorization device, including:

[0005] A cooling tank, the upper part of the cooling tank is provided with a cooling water inlet and a flue gas outlet, the lower part of the cooling tank is provided with a cooling water outlet and a flue gas inlet. The cooling water inlet is used to introduce cooling water into the cooling tank, and the flue gas inlet is used to introduce flue gas into the cooling tank, so that the cooling water cools the flue gas. The cooling water outlet is used to discharge the cooling water, and the flue gas outlet is used to discharge the flue gas;

[0006] A deodorization tower, which is communicated with the flue gas outlet.

[0007] In some embodiments, the cooling water inlet and the cooling water outlet are arranged on the side of the cooling tank; the flue gas inlet is arranged on the side of the cooling tank, and the flue gas outlet is arranged on the top of the cooling tank.

[0008] In some embodiments, the flue gas deodorization device further includes an external cooling assembly, which is arranged on the outer peripheral surface of the cooling tank and is used to cool the cooling tank.

[0009] In some embodiments, the external cooling assembly includes a plurality of cooling plates, and the plurality of cooling plates are arranged at intervals along the axial direction of the cooling tank. The cooling plates are inclined relative to the cooling tank to form a water receiving tank between the cooling plates and the cooling tank. The notch of the water receiving tank faces upward, and the water receiving tank can hold cooling water.

[0010] In some embodiments, the lowermost cooling plate is provided with a drain port.

[0011] In some embodiments, the cooling plate is disposed around the outer peripheral surface of the cooling tank.

[0012] In some embodiments, the inclination angle of the cooling plate is 30° - 45°.

[0013] In some embodiments, the flue gas deodorization device further includes multiple layers of packing, and the multiple layers of packing are disposed in the cooling tank and are spaced along the axial direction of the cooling tank.

[0014] In some embodiments, the bottom of the cooling tank has an openable and closable sewage outlet.

[0015] In some embodiments, the cooling tank includes a tank body and a tank bottom disposed on the tank body, the tank bottom has a guiding inclined surface, and the sewage outlet is disposed on the tank bottom.

[0016] The beneficial effects of the present application are as follows:

[0017] A flue gas deodorization device provided by the present application includes a cooling tank and a deodorization tower. Since a cooling water inlet and a flue gas outlet are provided at the upper part of the cooling tank, and a cooling water outlet and a flue gas inlet are provided at the lower part of the cooling tank, the cooling water inlet is used to introduce cooling water into the cooling tank, the flue gas inlet is used to introduce flue gas into the cooling tank so that the cooling water cools the flue gas, the cooling water outlet is used to discharge the cooling water, and the flue gas outlet is used to discharge the flue gas. Moreover, the deodorization tower is communicated with the flue gas outlet, that is, before the flue gas enters the deodorization tower, it is first cooled by the cooling tank. In this process, the saturated water in the flue gas will precipitate as the temperature of the flue gas decreases, and at the same time, the volatile acids and other odoriferous organic substances in the flue gas will also precipitate as the saturated water precipitates, so that the content of volatile acids in the flue gas decreases, and further the use of the lye in the deodorization tower can be reduced, and the treatment cost can be lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0019] Figure 1 It is a schematic structural diagram of the cooling tank provided by the embodiment of the present application.

[0020] Description of the reference numerals:

[0021] 100 - cooling tank, 110 - tank body, 111 - cooling water inlet, 112 - cooling water outlet, 113 - flue gas inlet, 114 - flue gas outlet, 120 - tank bottom, 121 - sewage outlet, 130 - cooling plate, 131 - water receiving tank, 132 - drain outlet, 140 - packing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indication will also change accordingly.

[0024] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0026] Combined with Figure 1 , the embodiment of the present application provides a flue gas deodorization device, including a cooling tank 100 and a deodorization tower. The upper part of the cooling tank 100 is provided with a cooling water inlet 111 and a flue gas outlet 114, and the lower part of the cooling tank 100 is provided with a cooling water outlet 112 and a flue gas inlet 113. The cooling water inlet 111 is used to introduce cooling water into the cooling tank 100, and the flue gas inlet 113 is used to introduce flue gas into the cooling tank 100 so that the cooling water cools the flue gas. The cooling water outlet 112 is used to discharge the cooling water, and the flue gas outlet 114 is used to discharge the flue gas; the deodorization tower is communicated with the flue gas outlet 114.

[0027] The cooling water inlet 111, the cooling water outlet 112, the flue gas inlet 113, and the flue gas outlet 114 are all in communication with the interior of the cooling tank 100. The cooling water inlet 111 is provided at the upper part of the cooling tank 100, the cooling water outlet 112 is provided at the lower part of the cooling tank 100, the flue gas inlet 113 is provided at the lower part of the cooling tank 100, and the flue gas outlet 114 is provided at the upper part of the cooling tank 100. Of course, in order to avoid mutual interference, the cooling water inlet 111 and the flue gas outlet 114 are arranged in a staggered manner, and the cooling water outlet 112 and the flue gas inlet 113 are arranged in a staggered manner.

[0028] Since the cooling water inlet 111 is used to introduce cooling water into the cooling tank 100, the flue gas inlet 113 is used to introduce flue gas into the cooling tank 100, the cooling water outlet 112 is used to discharge the cooling water, and the flue gas outlet 114 is used to discharge the flue gas, that is, the cooling water flows from top to bottom in the cooling tank 100, and the flue gas flows from bottom to top in the cooling tank 100. And during the process of the cooling water and the flue gas flowing in the cooling tank 100, heat exchange can be achieved, enabling the cooling water to cool the flue gas. Thus, after the high-temperature flue gas enters the cooling tank 100 from the flue gas inlet 113, it is cooled by the cooling water and then discharged from the flue gas outlet 114. Since the deodorizing tower is in communication with the flue gas outlet 114, that is, before the flue gas enters the deodorizing tower, it is first cooled by the cooling tank 100. During this process, the saturated water in the flue gas will precipitate as the temperature of the flue gas decreases, and at the same time, volatile acids and other odorous organic substances in the flue gas will also precipitate with the precipitation of the saturated water, so that the content of volatile acids in the flue gas decreases, and thus the use of lye in the deodorizing tower can be reduced.

[0029] It should be noted that in order to avoid waste, the cooling water can be recycled. The cooling water inlet 111, the cooling water source, and the cooling water outlet 112 are connected in sequence through pipelines to form a circulating water path. The cooling water source is a device for storing cooling water, and a circulating pump is provided on the pipeline to drive the cooling water to circulate in the circulating water path, thereby realizing the recycling of the cooling water. That is, after the cooling water exchanges heat with the flue gas in the cooling tank 100, the cooling water with an increased temperature is then discharged through the cooling water outlet 112 and flows into the cooling water source for cooling. The cooled cooling water then enters the cooling tank 100 from the cooling water inlet 111, and this process repeats to continuously cool the flue gas.

[0030] The deodorizing tower is a commonly used waste gas treatment device, mainly composed of an air inlet, an air outlet, a tower body, a packing layer 140, a spraying system, etc. Among them, the packing layer 140 and the spraying system are the core components of the deodorizing tower. The deodorizing tower uses the packing layer 140 and the spraying system to fully mix the waste gas, so that the odor molecules in the flue gas are adsorbed, decomposed, or converted into harmless substances, ultimately achieving the purpose of purifying the waste gas. The deodorizing tower can use existing equipment, and will not be elaborated here.

[0031] In some embodiments, the cooling water inlet 111 and the cooling water outlet 112 are provided on the side of the cooling tank 100; the flue gas inlet 113 is provided on the side of the cooling tank 100, and the flue gas outlet 114 is provided on the top of the cooling tank 100. Since the flue gas will rise vertically, setting the flue gas outlet 114 on the top of the cooling tank 100 facilitates the discharge of the flue gas.

[0032] In some embodiments, in order to improve the cooling effect on the flue gas, the flue gas deodorization device further includes an external cooling component, which is provided on the outer peripheral surface of the cooling tank 100 and is used to cool the cooling tank 100.

[0033] After the cooling tank 100 is used for a long time, under the influence of the high temperature of the flue gas, the cooling tank 100 will also heat up, thereby affecting the cooling effect on the flue gas. Therefore, an external cooling component is provided on the outer peripheral surface of the cooling tank 100 to cool the cooling tank 100, which can improve the cooling effect and cooling efficiency on the flue gas.

[0034] In some embodiments, the external cooling component includes a plurality of cooling plates 130, which are arranged at intervals along the axial direction of the cooling tank 100. The cooling plates 130 are inclined relative to the cooling tank 100 to form a water receiving groove 131 with the cooling tank 100. The notch of the water receiving groove 131 faces upward, and the water receiving groove 131 can hold cooling water.

[0035] In the order from top to bottom, the plurality of water receiving grooves 131 are sequentially named the first water receiving groove 131, the second water receiving groove 131, the third water receiving groove 131, etc. By analogy, continuously inject cooling water into the uppermost first water receiving groove 131. After the cooling water in the first water receiving groove 131 is full, it will overflow and flow down along the tank wall of the cooling tank 100 into the second water receiving groove 131. During this process, a part of the cooling tank 100 can be cooled. After the cooling water in the second water receiving groove 131 is full, it will overflow again and flow down along the tank wall of the cooling tank 100 into the third water receiving groove 131. During this process, another part of the cooling tank 100 can be cooled. By analogy, as long as cooling water is continuously injected into the first water receiving groove 131, the cooling of the cooling tank 100 can be achieved. Since the cooling plates 130 are inclined relative to the cooling tank 100, the cooling plates 130 will also provide a certain guiding direction for the flow of the cooling liquid. Specifically, the inclination angle of the cooling plates 130 can be 30° to 45°.

[0036] In some embodiments, in order to properly dispose of the cooling water in the lowermost water receiving groove 131, the lowermost cooling plate 130 is provided with a drain port 132, that is, the cooling water flowing into the lowermost water receiving groove 131 can be directly discharged through the drain port. The drain port 132 can be connected to a drain pipe to introduce the cooling water to the destination.

[0037] In some embodiments, in order to ensure that the tank wall of the cooling tank 100 is fully cooled down, the cooling plate 130 is arranged around the outer peripheral surface of the cooling tank 100, so as to ensure that the entire tank wall can be flowed through by the cooling water, achieving sufficient cooling down.

[0038] In some embodiments, in order to increase the contact area between the cooling water and the flue gas and improve the heat exchange efficiency, the flue gas deodorization device further includes multiple layers of packing 140. The multiple layers of packing 140 are arranged inside the cooling tank 100 and are arranged at intervals along the axial direction of the cooling tank 100. Specifically, the packing 140 can adopt corrugated plate packing 140.

[0039] In some embodiments, during the stage when the cooling tank 100 is not in use, when it is necessary to detect the cooling tank 100, the condensed water inside the cooling tank 100 needs to be drained first. Therefore, the bottom of the cooling tank 100 has an openable and closable sewage outlet 121. A valve is arranged on the sewage outlet 121. When using the cooling tank 100 to cool down the flue gas, the valve is closed. When it is necessary to repair the cooling tank 100, the valve is opened to drain the condensed water in the cooling tank 100.

[0040] In some embodiments, the cooling tank 100 includes a tank body 110 and a tank bottom 120 arranged on the tank body 110. The cooling water inlet 111, the cooling water outlet 112, the flue gas inlet 113 and the flue gas outlet 114 are all arranged on the tank body 110. The tank bottom 120 has a guiding inclined surface, and the sewage outlet 121 is arranged on the tank bottom 120. The guiding inclined surface can guide the discharge of the condensed water to accelerate the discharge speed of the condensed water.

[0041] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0042] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A flue gas deodorizing device, characterized in that: include: A cooling tank, wherein a cooling water inlet and a smoke outlet are provided at the upper portion of the cooling tank, and a cooling water outlet and a smoke inlet are provided at the lower portion of the cooling tank, wherein the cooling water inlet is used to pass cooling water into the cooling tank, and the smoke inlet is used to pass smoke into the cooling tank so that the cooling water cools the smoke, and the cooling water outlet is used to discharge cooling water, and the smoke outlet is used to discharge smoke; A deodorizing tower is communicated with the smoke outlet.

2. The smoke deodorizing device according to claim 1, characterized in that: The cooling water inlet and the cooling water outlet are arranged on the side of the cooling tank; the smoke inlet is arranged on the side of the cooling tank, and the smoke outlet is arranged on the top of the cooling tank.

3. The flue gas deodorizing device according to claim 1, characterized in that: The flue gas deodorization device further comprises an external cooling component, which is arranged on the outer peripheral surface of the cooling tank and is used to cool the cooling tank.

4. The flue gas deodorizing device according to claim 3, characterized in that: The external cooling assembly includes a plurality of cooling plates, which are spaced apart along the axial direction of the cooling tank. The cooling plates are tilted relative to the cooling tank to form a water receiving groove between the cooling tank, and the notch of the water receiving groove faces upward, and the water receiving groove can accommodate cooling water.

5. The smoke deodorizing device according to claim 4, characterized in that: The cooling plate located at the bottom layer is provided with a drainage port.

6. The smoke deodorizing device according to claim 4, characterized in that: The cooling plate is arranged around the outer peripheral surface of the cooling tank.

7. The smoke deodorizing device according to claim 4, characterized in that: The inclination angle of the cooling plate is 30° to 45°.

8. The flue gas deodorizing device according to any one of claims 1 to 7, characterized in that: The smoke deodorizing device further comprises multiple layers of fillers, wherein the multiple layers of fillers are arranged in the cooling tank, and the multiple layers of fillers are arranged at intervals along the axial direction of the cooling tank.

9. The flue gas deodorizing device according to any one of claims 1 to 7, characterized in that: The bottom of the cooling tank is provided with an openable and closable sewage outlet.

10. The smoke deodorizing device according to claim 9, characterized in that: The cooling tank comprises a tank body and a tank bottom arranged on the tank body, the tank bottom has a guiding inclined surface, and the sewage outlet is arranged on the tank bottom.

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