A water tank for exhaust gas dust removal and cooling

Abstract

The utility model discloses a water tank for dust removal and cooling of waste gas, which belongs to the field of waste gas treatment technology, and is used to solve at least one of the problems in the prior art that the high dust content of the treated waste gas leads to equipment blockage, the time-consuming and labor-intensive cleaning of the waste gas treatment equipment after blockage, and the high energy consumption for cooling the waste gas. The water tank includes a baffle, a guide assembly and a main spray assembly. The baffle divides the space above the liquid surface of the water tank into a mixed flow chamber and an exhaust chamber that are sequentially connected along the moving direction of the waste gas. The guide assembly is arranged in the mixed flow chamber; the guide assembly has a zigzag main fluid channel, the waste gas inlet of the main fluid channel is connected to the air inlet of the water tank, and the waste gas outlet of the main fluid channel is connected to the exhaust chamber; the main spray assembly is arranged in the main fluid channel. The utility model can be used for process waste gas treatment.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and in particular relates to a water tank used for dust removal and temperature reduction of waste gas. Background Art

[0002] In existing process waste gas treatment systems, a water tank is usually used to cool the waste gas. The structure of the water tank is very simple, and only a coolant (such as water) is filled in the tank body, and mass transfer and cooling are performed through contact between the coolant and the waste gas.

[0003] However, since the exhaust gas can only flow above the coolant, the interaction time with the coolant is short, resulting in poor cooling effect.

[0004] In addition, the treated waste gas has a high dust content and is easy to clog equipment. After clogging, it is time-consuming and labor-intensive to clean the process waste gas treatment system, and it consumes a lot of energy to cool the waste gas. Utility Model Content

[0005] In view of the above analysis, the utility model aims to provide a water tank for exhaust gas dust removal and cooling, so as to solve at least one of the problems in the prior art that the high dust content in the treated exhaust gas leads to equipment blockage, the cleaning of the exhaust gas treatment equipment is time-consuming and labor-intensive after blockage, and the exhaust gas cooling effect is poor.

[0006] The purpose of the utility model is mainly achieved through the following technical solutions.

[0007] The utility model provides a water tank for dust removal and cooling of waste gas, comprising a baffle, a guide assembly and a main spray assembly, wherein the baffle divides the space above the liquid surface of the water tank into a mixed flow chamber and an exhaust chamber which are sequentially connected along the moving direction of the waste gas, and the guide assembly is arranged in the mixed flow chamber; the guide assembly has a zigzag main fluid channel, the waste gas inlet of the main fluid channel is connected to the air inlet of the water tank, and the waste gas outlet of the main fluid channel is connected to the exhaust chamber; the main spray assembly is arranged in the main fluid channel, and the spraying direction of the spray assembly is directly opposite to the flow direction of the waste gas.

[0008] Furthermore, the guide assembly includes a first arc plate and a second arc plate, the fixed end of the first arc plate is fixedly connected to the side wall of the water tank, and the suspended end of the first arc plate is suspended in the air, the fixed end of the second arc plate is fixedly connected to the side wall of the baffle, and the suspended end of the second arc plate is suspended in the air; the projections of the first arc plate and the second arc plate in the vertical direction have overlapping parts, forming a zigzag main fluid channel.

[0009] Furthermore, gaps are provided between the two sides of the first arc plate and the side walls of the water tank; and gaps are provided between the two sides of the second arc plate and the water tank.

[0010] Furthermore, below the liquid level of the water tank is a spray water chamber, the mixed flow chamber and the exhaust chamber are located above the spray water chamber, and the mixed flow chamber is located on the left side of the exhaust chamber.

[0011] Furthermore, the air inlet of the water tank is located at the top of the mixed flow chamber, and the air outlet of the water tank is located at the top of the exhaust chamber.

[0012] Furthermore, a pressure relief hole is opened on one side of the main fluid channel close to the side wall of the water tank. The pressure relief hole, the channel between the side wall of the main fluid channel and the side wall of the water tank, the channel between the side wall of the main fluid channel and the top of the spray water chamber, and the vent are connected in sequence to serve as a secondary fluid channel for exhaust gas, and part of the exhaust gas enters the secondary fluid channel through the pressure relief hole.

[0013] Furthermore, a secondary spray assembly is provided in the secondary fluid channel.

[0014] Furthermore, there are multiple pressure relief holes, and the multiple pressure relief holes are evenly distributed.

[0015] Furthermore, the first arc plate includes n first arc guide plates, and the second arc plate includes n-1 second arc guide plates. From top to bottom, a pressure relief hole is opened on the side of the x-th first arc guide plate close to the side wall of the water tank, and the pressure relief hole is arranged on the x-th second arc guide plate above the projection of the x-th first arc guide plate, 1<x≤n.

[0016] Furthermore, the air inlet of the water tank is located at the top of the mixed flow chamber, and the projection of the air inlet in the vertical direction is located on the projection of the first arc plate in the vertical direction.

[0017] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects.

[0018] The utility model provides a water tank for exhaust gas dust removal and cooling, and a flow guide component is arranged in the mixed flow chamber, and a zigzag main fluid channel is formed by the flow guide component to guide the exhaust gas. On the one hand, it can extend the flow path of the exhaust gas and the residence time in the water tank, increase the heat transfer area between the exhaust gas and the water tank, so that the exhaust gas can fully contact with the first arc plate and the second arc plate, and fully transfer the heat carried by the exhaust gas to the first arc plate and the second arc plate, thereby improving the heat transfer capacity of the water tank; on the other hand, since the main spray component is arranged in the main fluid channel, it can continuously spray the zigzag-flowing exhaust gas, so that the spray water and the exhaust gas are fully mixed, and the exhaust gas is effectively cooled and dusted by the spray water.

[0019] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents particularly pointed out in the embodiments of the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0021] Figure 1 A schematic diagram of the structure of a water tank for exhaust gas dust removal and cooling provided by the utility model;

[0022] Figure 2 This is a front view of a water tank for exhaust gas dust removal and cooling provided by the utility model.

[0023] Reference numerals:

[0024] 1-baffle; 14-vent; 2-spray water chamber; 3-mixing chamber; 4-exhaust chamber; 5-pressure relief hole; 6-upper arc plate; 61-inclined plate; 62-upper circular arc plate; 63-upper flat plate; 7-middle arc plate; 71-connecting plate; 72-middle circular arc plate; 73-middle flat plate; 8-lower arc plate; 81-vertical plate; 82-lower circular arc plate; 83-lower flat plate; 9-first main spray assembly; 10-second main spray assembly; 11-third main spray assembly; 12-auxiliary spray assembly; 13-liquid level sensor. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0026] An embodiment of the utility model provides a water tank for exhaust gas dust removal and cooling, the water tank is arranged in a process exhaust gas treatment system, see Figure 1 to Figure 2 , including a baffle 1 and a guide assembly. The inner cavity of the water tank is divided into a spray water chamber 2 and an exhaust gas chamber in the vertical direction. The spray water chamber 2 is located below the exhaust gas chamber, that is, the spray water chamber 2 is below the liquid level of the water tank. When the process waste gas treatment system is in operation, the spray water chamber 2 is filled with coolant. In this embodiment, water is selected as an example. The baffle 1 is arranged in the exhaust gas chamber of the water tank. The baffle 1 divides the exhaust gas chamber into a mixed flow chamber 3 and an exhaust chamber 4 which are connected in sequence along the moving direction of the exhaust gas. A vent 14 is provided below the baffle 1. When the process waste gas treatment system is in operation, the vent 14 is at least partially located above the water surface contained in the spray water chamber 2. The vent 14 serves as a connection port between the mixed flow chamber 3 and the exhaust chamber 4. The air outlet of the water tank is located at the top of the exhaust chamber 4. As for the positions of the three chambers, exemplarily, the spray water chamber 2 is located below, the mixed flow chamber 3 and the exhaust chamber 4 are located above the spray water chamber 2, and the mixed flow chamber 3 is located on the left side of the exhaust chamber 4.

[0027] The guide component is arranged in the mixing chamber 3. Specifically, the structure of the guide component includes a first arc plate and a second arc plate. The fixed end of the first arc plate is fixedly connected to the side wall of the water tank, and the suspended end of the first arc plate is suspended. The fixed end of the second arc plate is fixedly connected to the side wall of the baffle 1, and the suspended end of the second arc plate is suspended. The projections of the first arc plate and the second arc plate in the vertical direction have an overlapping part, so that a zigzag main fluid channel is formed in the mixing chamber 3. The main spray component is arranged in the main fluid channel, and is used to spray and remove dust from the exhaust gas flowing through the main fluid channel.

[0028] The air inlet of the water tank is located at the top of the mixing chamber 3, and the vertical projection of the air inlet is located on the vertical projection of the first arc plate, ensuring that the exhaust gas does not flow directly to the second arc plate without passing through the first arc plate, thereby ensuring the exhaust gas treatment efficiency.

[0029] Compared with the prior art, the water tank for exhaust gas dust removal and cooling provided in this embodiment is provided with a flow guide component in the mixed flow chamber 3, and the zigzag main fluid channel is formed by the flow guide component to guide the exhaust gas. On the one hand, it can extend the flow path of the exhaust gas and the residence time in the water tank, increase the heat transfer area between the exhaust gas and the water tank, so that the exhaust gas can fully contact the first arc plate and the second arc plate, and fully transfer the heat carried by the exhaust gas to the first arc plate and the second arc plate, thereby improving the heat transfer capacity of the water tank; on the other hand, since the main spray component is arranged in the main fluid channel, it can continuously spray the zigzag-flowing exhaust gas, so that the spray water and the exhaust gas are fully mixed, and the exhaust gas is effectively cooled and dusted by the spray water.

[0030] Considering that the exhaust gas flows in the zigzag main fluid channel, the flow resistance will continue to increase. In order to properly relieve pressure and ensure smooth flow, a pressure relief hole 5 is opened on the side of the main fluid channel close to the side wall of the water tank. The pressure relief hole 5, the channel between the side wall of the main fluid channel and the side wall of the water tank, the channel between the bottom wall of the main fluid channel and the water surface of the spray water chamber 2, and the vent 14 are connected in sequence. As the secondary fluid channel of the exhaust gas, part of the exhaust gas enters the secondary fluid channel through the pressure relief hole 5, and a secondary spray assembly 12 is provided in the secondary fluid channel. In this way, the above-mentioned water tank adopts a dual-channel design, which can make full use of the space in the mixed flow chamber 3, effectively reduce the flow resistance and improve the exhaust gas treatment efficiency on the basis of ensuring the cooling and dust removal effects.

[0031] In order to achieve uniform and effective pressure relief, the number of the above-mentioned pressure relief holes 5 is multiple, and the multiple pressure relief holes 5 are evenly distributed. The diameter of the pressure relief holes 5 is 10-30 mm (for example, 10 mm, 20 mm, 30 mm), and in the horizontal direction, the center distance between the two farthest pressure relief holes 5 is 350-360 mm (for example, 350 mm, 352 mm, 360 mm), and the center distance between the two farthest pressure relief holes 5 in the vertical direction is 95-105 mm (for example, 95 mm, 100 mm, 105 mm).

[0032] Exemplarily, the number of the pressure relief holes 5 is 15, and the 15 pressure relief holes 5 are arranged in a 5×3 pattern, that is, the 15 pressure relief holes 5 are arranged in 3 rows, and the number of the pressure relief holes 5 in each row is 5.

[0033] In practical applications, the size data of the pressure relief hole 5 can be adjusted according to the actual pressure relief requirements, which will not be described in detail here.

[0034] Exemplarily, the first arc plate includes n first arc guide plates, and the second arc plate includes n-1 second arc guide plates. From top to bottom, a pressure relief hole 5 is opened on the side of the x-th first arc guide plate close to the side wall of the water tank, and the pressure relief hole is arranged on the x-th second arc guide plate above the projection of the x-th first arc guide plate, 1<x≤n, so as to ensure that the exhaust gas flowing under the pressure relief hole 5 can continue to flow downward along the first arc guide plate.

[0035] Correspondingly, when n=2, the first arc guide plate is an upper arc plate, the second first arc guide plate is a lower arc plate, and the first second arc guide plate is a middle arc plate.

[0036] It should be noted that the two sides of the first arc plate (i.e., the front end face and the rear end face of the first arc plate) have a first gap with the side wall of the water tank, and the two sides of the second arc plate (i.e., the front end face and the rear end face of the second arc plate) have a second gap with the side wall of the water tank. Exemplarily, the width of the first gap is 8 to 12 mm (e.g., 8 mm, 10 mm, 12 mm); the width of the second gap is 8 to 12 mm (e.g., 8 mm, 10 mm, 12 mm). It should be noted that the first gap and the second gap can both be continuous long strip gaps, or discontinuous gaps. The above setting is to prevent the spray water of the main spray assembly from accumulating on the first arc plate and the second arc plate, and to ensure the smooth flow of exhaust gas in the zigzag main fluid channel.

[0037] Exemplarily, the number of the first arc plates is two, namely the upper arc plate 6 and the lower arc plate 8, and the number of the second arc plate is one, namely the middle arc plate 7. The fixed end of the upper arc plate 6 is fixedly connected to the side wall of the water tank, and the suspended end of the upper arc plate 6 is suspended. The fixed end of the lower arc plate 8 is fixedly connected to the upper arc plate 6, and the suspended end of the lower arc plate 8 is suspended. The fixed end of the middle arc plate 7 is fixedly connected to the side wall of the baffle 1, and the suspended end of the middle arc plate 7 is suspended and inserted between the upper arc plate 6 and the lower arc plate 8, thereby forming a zigzag main fluid channel.

[0038] Correspondingly, there are three main spray assemblies, namely the first main spray assembly 9, the second main spray assembly 10 and the third main spray assembly 11, which correspond one-to-one to the first arc plate and the second arc plate. That is to say, main spray assemblies are provided above the suspended ends of the upper arc plate 6, the middle arc plate 7 and the lower arc plate 8. The first main spray assembly 9 is provided above the suspended end of the upper arc plate 6, the second main spray assembly 10 is provided above the suspended end of the middle arc plate 7, and the third main spray assembly 11 is provided above the suspended end of the lower arc plate 8, so that the exhaust gas flowing through the main fluid channel can be evenly sprayed, thereby further improving the cooling and dust removal effects.

[0039] The scope of the present utility model is not limited to the above embodiments. For example, those skilled in the art can also increase or decrease the number of first arc plates and second arc plates according to actual needs, and adjust the number of main spray assemblies accordingly: the number of first arc plates is set to three, the number of second arc plates is set to two, and accordingly, the number of main spray assemblies is set to five, and the main spray assemblies correspond to the first arc plates and the second arc plates one by one.

[0040] When the process waste gas treatment system is in operation, the waste gas enters the mixed flow chamber 3 of the water tank from the air inlet and flows downward. The upper arc plate 6 forces the waste gas to enter the gap between it and the middle arc plate 7 from the side away from the baffle 1. The middle arc plate 7 forces the waste gas to enter the gap between it and the lower arc plate 8 from the side close to the baffle 1. Finally, it flows from between the middle arc plate 7 and the lower arc plate 8 to the vent 14, enters the exhaust chamber 4, and enters the spray tower from the air outlet. During the flow of waste gas in the mixed flow chamber 3, the first main spray assembly 9, the second main spray assembly 10 and the third main spray assembly 11 spray the waste gas respectively, and the water flows downward to the spray water chamber 2.

[0041] Considering that the upper arc plate 6 is mainly used to introduce the exhaust gas into the mixing chamber 3, the structure of the upper arc plate 6, specifically, includes an inclined plate 61, an upper arc plate 62 and an upper flat plate 63 which are sequentially connected from the fixed end to the suspended end of the upper arc plate 6, wherein the inclined plate 61 can smoothly introduce the exhaust gas into the mixing chamber 3, the upper arc plate 62 can smoothly change the direction of the exhaust gas and reduce the increase in flow resistance, and the lower flat plate 83 can guide the exhaust gas to flow horizontally in the mixing chamber 3 and enter the gap between the upper arc plate 6 and the middle arc plate 7.

[0042] The middle arc plate 7 is mainly used for flow guidance. Since this part is located in the middle part of the main fluid channel and the change in the flow direction of the exhaust gas will inevitably cause an increase in flow resistance, in order to appropriately reduce the flow resistance, the structure of the middle arc plate 7, specifically, includes a connecting plate 71, a middle arc plate 72 and a middle flat plate 73 connected in sequence from the fixed end to the suspended end of the middle arc plate 7, wherein the connecting plate 71 is fittedly connected to the side wall of the mixing chamber 3 to ensure the stability of the middle arc plate 7, the middle arc plate 72 can smoothly change the direction of the exhaust gas and reduce the increase in flow resistance, and the middle flat plate 73 can guide the exhaust gas to flow horizontally in the mixing chamber 3 and enter the gap between the middle arc plate 7 and the lower arc plate 8.

[0043] The lower arc plate 8 is mainly used for flow diversion. In order to appropriately reduce the flow resistance, the structure of the lower arc plate 8 includes a vertical plate 81, a lower arc plate 82 and a lower flat plate 83 which are connected in sequence from the fixed end to the suspended end of the lower arc plate 8, wherein the vertical plate 81 is used for connection with the upper arc plate 6, the lower arc plate 82 can smoothly change the direction of the exhaust gas and reduce the increase in flow resistance, and the lower flat plate 83 can guide the exhaust gas to flow horizontally in the mixing chamber 3 and enter the vent 14.

[0044] It should be noted that in order to ensure the smooth flow of exhaust gas in the main fluid channel and minimize disturbance, the angle between the vertical plate 81 and the inclined plate 61 is less than 45°, for example (30-40°). In this way, the space between the two is smaller, and the exhaust gas will flow more concentratedly between the middle arc plate 7 and the lower arc plate 8 during the flow process, reducing the disturbance of the exhaust gas.

[0045] In order to form a smooth main fluid channel, the size and distance parameters of the upper arc plate 6, the middle arc plate 7 and the lower arc plate 8 are as follows:

[0046] The arc radius of the upper arc plate 62 is 80-90 mm (for example, 80 mm, 87 mm, 90 mm), the length of the upper flat plate 63 is 85-95 mm (for example, 85 mm, 91 mm, 95 mm), and the distance between the upper flat plate 63 and the top of the mixing chamber 3 is 135-145 mm (for example, 135 mm, 140 mm, 145 mm).

[0047] The arc radius of the middle arc plate 72 is 170-180 mm (for example, 170 mm, 175 mm, 180 mm), the length of the middle flat plate 73 is 75-79 mm (for example, 75 mm, 77 mm, 79 mm), and the distance between the middle flat plate 73 and the top of the mixing chamber 3 is 240-255 mm (for example, 240 mm, 250 mm, 255 mm).

[0048] The arc radius of the lower arc plate 82 is 80-85 mm (for example, 80 mm, 82 mm, 85 mm), the length of the lower flat plate 83 is 120-135 mm (for example, 120 mm, 127 mm, 135 mm), the distance between the lower flat plate 83 and the top of the mixing chamber 3 is 350-370 mm (for example, 350 mm, 360 mm, 370 mm), and the distance between the lower flat plate 83 and the top surface of the spray water chamber 2 is 10-20 mm (for example, 10 mm, 15 mm, 20 mm).

[0049] In order to be able to adjust the flow of the main spray assembly in real time according to the amount of water in the water tank, the water tank also includes a liquid level sensor 13 and a spray controller. The liquid level sensor 13 is used to collect the liquid level data in the spray water chamber 2 and transmit it to the spray controller. The spray controller receives the liquid level data and determines whether it is within the liquid level threshold range. If the liquid level data is lower than the minimum value of the liquid level threshold range, the main spray assembly is controlled to increase the flow rate. If the liquid level data is higher than the maximum value of the liquid level threshold range, the main spray assembly is controlled to reduce the flow rate. This ensures that the exhaust gas can enter the exhaust chamber 4 from the vent 14 along the main fluid channel, and that part of the exhaust gas can enter the exhaust chamber 4 from the vent 14 through the secondary fluid channel connected to the pressure relief hole 5.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A water tank for exhaust gas dust removal and cooling, characterized in that: It includes a baffle, a flow guide assembly and a main spray assembly, wherein the baffle divides the space above the liquid surface of the water tank into a mixed flow chamber and an exhaust chamber which are sequentially connected along the exhaust gas flow direction, and the flow guide assembly is arranged in the mixed flow chamber; The guide assembly has a zigzag main fluid channel, the exhaust gas inlet of the main fluid channel is connected to the air inlet of the water tank, and the exhaust gas outlet of the main fluid channel is connected to the exhaust chamber; The main spray component is arranged in the main fluid channel, and the spray direction of the spray component is facing the direction of exhaust gas flow.

2. The water tank for exhaust gas dust removal and cooling according to claim 1 is characterized in that: The guide assembly includes a first arc plate and a second arc plate, wherein the fixed end of the first arc plate is fixedly connected to the side wall of the water tank, and the suspended end of the first arc plate is suspended in the air, and the fixed end of the second arc plate is fixedly connected to the side wall of the baffle, and the suspended end of the second arc plate is suspended in the air; The projections of the first arc plate and the second arc plate in the vertical direction have an overlapping portion, forming a zigzag main fluid channel.

3. The water tank for exhaust gas dust removal and cooling according to claim 2 is characterized in that: Gaps are provided between the two sides of the first arc plate and the side walls of the water tank; Gaps are arranged between the two sides of the second arc plate and the water tank.

4. The water tank for exhaust gas dust removal and cooling according to claim 1 is characterized in that: The spray water chamber is located below the liquid level of the water tank, the mixed flow chamber and the exhaust chamber are located above the spray water chamber, and the mixed flow chamber is located on the left side of the exhaust chamber.

5. The water tank for exhaust gas dust removal and cooling according to claim 4 is characterized in that: The air inlet of the water tank is located at the top of the mixed flow chamber, and the air outlet of the water tank is located at the top of the exhaust chamber.

6. The water tank for exhaust gas dust removal and cooling according to claim 1 is characterized in that: A pressure relief hole is opened on one side of the main fluid channel close to the side wall of the water tank. The pressure relief hole, the channel between the side wall of the main fluid channel and the side wall of the water tank, the channel between the side wall of the main fluid channel and the top of the spray water chamber, and the vent are connected in sequence to serve as a secondary fluid channel for exhaust gas. Part of the exhaust gas enters the secondary fluid channel through the pressure relief hole.

7. The water tank for exhaust gas dust removal and cooling according to claim 6 is characterized in that: A secondary spray assembly is provided in the secondary fluid channel.

8. The water tank for exhaust gas dust removal and cooling according to claim 6 is characterized in that: There are multiple pressure relief holes, and the multiple pressure relief holes are evenly distributed.

9. The water tank for exhaust gas dust removal and cooling according to claim 2 is characterized in that: The first arc plate includes n first arc guide plates, and the second arc plate includes n-1 second arc guide plates. From top to bottom, a pressure relief hole is opened on the side of the x-th first arc guide plate close to the side wall of the water tank, and the pressure relief hole is arranged on the x-th second arc guide plate above the projection of the x-th first arc guide plate, 1<x≤n.

10. The water tank for exhaust gas dust removal and cooling according to claim 2, characterized in that: The air inlet of the water tank is located at the top of the mixed flow chamber, and the projection of the air inlet in the vertical direction is located on the projection of the first arc plate in the vertical direction.

Images