Water spraying heat exchange assembly for high-temperature waste gas

Abstract

The utility model discloses a high temperature waste gas water spray heat exchange assembly, which comprises a heat exchange box, two ends of the heat exchange box are respectively provided with a gas inlet and a gas outlet, a plurality of groups of spray mechanisms are arranged in the heat exchange box, each spray mechanism comprises a spray pipe and a heat exchange plate, the spray pipe is provided with a plurality of spray heads, and the spray heads are arranged on the heat exchange plate. The heat exchange plate is provided with a plurality of through holes, and the spray head is arranged towards the heat exchange plate and used for spraying water towards the surface of the heat exchange plate. The spraying mechanism is arranged in the heat exchange box so that high-temperature waste gas can be sprayed and cooled, the heat exchange plate and the spray head act together in the spraying mechanism, the spray head can spray water to the surface of the heat exchange plate, the heat exchange plate can prolong the heat exchange time of the sprayed water and the high-temperature flue gas, and the heat exchange efficiency is improved; and the cooling effect on high-temperature waste gas can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment equipment, and more specifically to a water spray heat exchange component for high-temperature waste gas. Background Art

[0002] Some industrial waste gases, due to their high initial temperature, need to be cooled first before being introduced into the waste gas purifier to avoid the waste gas temperature being too high and causing damage to the modules in the waste gas purifier, or even causing the modules in the waste gas purifier to burn and create safety hazards.

[0003] The cooling treatment of high-temperature exhaust gas is usually carried out by spraying. The high-temperature exhaust gas flows into the heat exchange box, and a nozzle is installed in the heat exchange box. The nozzle can spray relatively low-temperature cooling water. The cooling water and the high-temperature exhaust gas are in contact with each other for heat exchange, taking away the heat in the high-temperature exhaust gas to achieve the cooling of the high-temperature exhaust gas. In the current spray cooling process, direct spraying is usually used. The spray water is directly dispersed into the air and contacts with the high-temperature exhaust gas to achieve heat exchange and cooling treatment. However, in this spraying method, the exchange efficiency between cooling water and high-temperature exhaust gas is low. In order to improve the efficiency of heat exchange, the nozzles in the equipment usually choose atomizing nozzles or other nozzles that can spray fine water mist, which can spray fine and dispersed spray water mist, thereby improving the heat exchange efficiency. If the water outlet of the nozzle is too small, it is easy to be blocked during use, affecting the service life of the nozzle.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a water spray heat exchange component for high-temperature exhaust gas, which can improve the cooling and heat exchange efficiency of the high-temperature exhaust gas.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water spray heat exchange component for high-temperature exhaust gas, comprising a heat exchange box, wherein an air inlet and an air outlet are respectively provided at both ends of the heat exchange box, and a plurality of groups of spray mechanisms are arranged in the heat exchange box, wherein the spray mechanisms comprise a spray pipe and a heat exchange plate, wherein the spray pipe is provided with a plurality of spray heads, and the heat exchange plate has a plurality of through holes, and the spray heads are arranged toward the direction of the heat exchange plate for spraying water toward the surface of the heat exchange plate.

[0007] The utility model is further configured such that the heat exchange plate is arranged in an inclined shape, and the lower part of the heat exchange plate is inclined toward the air inlet.

[0008] The utility model is further configured that, in each group of spray mechanisms, the spray pipe is located on a side of the heat exchange plate close to the air inlet, and the spray head of the spray pipe is arranged to be inclined downward.

[0009] The utility model is further configured that a plurality of fins are arranged on the surface of the heat exchange plate, and the fins are located on a side of the heat exchange plate facing the air inlet.

[0010] The utility model is further configured such that the fin is tilted up and down toward one side of the air inlet, and a water-blocking space is formed between the fin and the heat exchange plate.

[0011] The utility model is further configured that a plurality of layers of fins are arranged on the surface of the heat exchange plate, and the adjacent upper and lower layers of fins are arranged staggered with each other, and the two side edges of the fins of the upper layer are located above the fins of the lower layer.

[0012] The utility model is further configured that the upper portion of the fin is an arc-shaped surface, the middle of the arc-shaped surface is raised, and both sides are inclined downward.

[0013] The utility model is further configured such that the spray pipe is connected to a water inlet pipe, the bottom surface of the inner cavity of the heat exchange box is inclined, and a water outlet is provided at the lowest point of the bottom surface.

[0014] The utility model is further configured to further include an air intake pipe and an exhaust gas purifier, wherein the air intake pipe is connected to the air intake of the heat exchange box, and the exhaust gas purifier is connected to the air outlet of the heat exchange box.

[0015] The utility model is further configured that the heat exchange plate divides the inner cavity of the heat exchange box into a plurality of chambers.

[0016] In summary, the utility model has the following beneficial effects:

[0017] By setting up a spray mechanism inside the heat exchange box, the high-temperature exhaust gas can be sprayed to cool it down. The spray mechanism is composed of a heat exchange plate and a nozzle. The nozzle can spray water onto the surface of the heat exchange plate. The heat exchange plate can extend the heat exchange time between the spray water and the high-temperature flue gas, improve the heat exchange efficiency, and enhance the cooling effect on the high-temperature exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a water spray heat exchange component for high-temperature exhaust gas in this embodiment;

[0019] Figure 2 A schematic diagram of the structure inside the heat exchange box in this embodiment;

[0020] Figure 3 A structural schematic diagram of the spray mechanism in this embodiment;

[0021] Figure 4 A schematic diagram of the structure of the heat exchange plate in this embodiment;

[0022] Figure 5 It is a schematic diagram of the structure of the fins on the surface of the heat exchange plate in this embodiment.

[0023] Figure numerals: 1. air inlet pipe; 2. heat exchange box; 3. exhaust gas purifier; 21. air inlet; 22. air outlet; 23. heat exchange plate; 24. spray pipe; 25. bottom surface; 26. water outlet; 27. water inlet pipe; 231. through hole; 232. fin; 233. water-blocking space; 234. curved surface; 241. nozzle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] This embodiment discloses a water spray heat exchange component for high-temperature exhaust gas, referring to Figure 1 , Figure 2 As shown, it includes a heat exchange box 2, and an air inlet 21 and an air outlet 22 are respectively opened at both ends of the heat exchange box 2. The air inlet 21 of the heat exchange box 2 is connected to the air inlet pipe 1, and the air outlet 22 of the heat exchange box 2 is connected to the exhaust gas purifier 3.

[0026] During use, high-temperature exhaust gas enters the heat exchange box 2 from the air intake pipe 1, and is sprayed and cooled in the heat exchange box 2 to reduce the temperature of the exhaust gas. Then, the relatively low-temperature exhaust gas is passed into the exhaust gas purifier 3 to purify the exhaust gas and reduce the pollution hazards in the exhaust gas.

[0027] The heat exchange box 2 is cooled by spraying. After relatively low-temperature water is sprayed into the heat exchange box 2, the temperature of the exhaust gas will decrease, and the temperature of the spraying water will increase, thereby obtaining relatively high-temperature water. The relatively high-temperature spraying water can be collected and concentrated to achieve heat output, which can be used as a heat source in subsequent exhaust gas treatment processes and can also be used for terminal flue gas dewhitening treatment.

[0028] Reference Figure 2 , Figure 3As shown, several groups of spray mechanisms are arranged in the box, and the multiple groups of spray mechanisms work together to spray and cool the high-temperature exhaust gas. The spray mechanism includes a spray pipe 24 and a heat exchange plate 23. The spray pipe 24 is equipped with several nozzles 241. The nozzles 241 are arranged toward the heat exchange plate 23 and can spray water toward the surface of the heat exchange plate 23. The cooling water can be sprayed out through the nozzles 241 and dispersed in the heat exchange box 2, and some of the spray water will adhere to the surface of the heat exchange plate 23. After the spray water adheres to the surface of the heat exchange plate 23, it can increase the time for the spray water to fall, prolong the heat exchange time, and also increase the heat exchange area with the high-temperature exhaust gas to a certain extent, thereby improving the heat exchange efficiency. The heat exchange plate 23 can be made of metal material, which has good thermal conductivity and is conducive to heat exchange with the spray water.

[0029] Reference Figure 2 As shown, the heat exchange plate 23 divides the inner cavity of the heat exchange box 2 into a plurality of chambers, and each chamber is distributed along the direction from the air inlet 21 to the air outlet 22. The heat exchange plate 23 has a plurality of through holes 231, through which the exhaust gas can flow, and can play a role in slow flow blocking of the exhaust gas, thereby extending the time for the exhaust gas to flow through the heat exchange box 2, and extending the time for heat exchange and cooling.

[0030] Specifically, the heat exchange plate 23 is arranged in an inclined shape, and the lower part of the heat exchange plate 23 is inclined toward the air inlet 21. In each group of spraying mechanisms, the spray pipe 24 is located on the side of the heat exchange plate 23 close to the air inlet 21, and the spray head 241 of the spray pipe 24 is arranged in an inclined downward direction.

[0031] Each group of spray mechanisms is provided with a water inlet pipe 27, which is connected to the spray pipe 24 and can supply water to the spray pipe 24, and then to the spray head 241. The inner cavity bottom surface 25 of the heat exchange box 2 is inclined, and a water outlet 26 is provided at the lowest point of the bottom surface 25, and a water outlet pipe is connected to the water outlet 26, and the water output from the water outlet pipe is heated by heat exchange and has a higher temperature.

[0032] Reference Figure 4 As shown, a plurality of fins 232 are connected to the surface of the heat exchange plate 23, and the fins 232 are located on the side of the heat exchange plate 23 facing the air inlet 21. The fins 232 can increase the heat exchange area on the surface of the heat exchange plate 23 on the one hand, and can also block the spray water on the other hand, prolong the time for the spray water to flow down, and help improve the heat exchange efficiency between the exhaust gas and the spray water.

[0033] Specifically, the fin 232 is tilted up and down toward one side of the air inlet 21, and a water blocking space 233 is formed between the lower root of the fin 232 and the heat exchange plate 23. The water on the fin 232 and the surface of the heat exchange plate 23 has a tendency to flow toward the water blocking space 233, so that the spray water can basically adhere to the surface of the heat exchange plate 23 during the flow process.

[0034] Reference Figure 5 As shown, the upper portion of the fin 232 is an arc-shaped surface 234 , the middle of the arc-shaped surface 234 is raised, and both sides are inclined downward, which can prevent water from accumulating in the water-blocking space 233 between the fin 232 and the heat exchange plate 23 .

[0035] On the surface of each heat exchange plate 23, there are several layers of fins 232. The adjacent upper and lower layers of fins 232 are staggered with each other, and the two side edges of the fins 232 of the upper layer are located above the fins 232 of the lower layer. The spray water dripping from the two sides of the fins 232 of the upper layer can be received by the fins 232 in the lower layer, which can slow down the speed of the spray water falling, slow down the speed of the spray water falling, and thus improve the heat exchange efficiency.

[0036] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A water spray heat exchange component for high-temperature exhaust gas, comprising a heat exchange box (2), wherein both ends of the heat exchange box (2) are respectively provided with an air inlet (21) and an air outlet (22), and the heat exchange box (2) is provided with a plurality of groups of spray mechanisms, characterized in that: The spray mechanism comprises a spray pipe (24) and a heat exchange plate (23); the spray pipe (24) is provided with a plurality of spray heads (241); the heat exchange plate (23) has a plurality of through holes (231); the spray heads (241) are arranged toward the heat exchange plate (23) and are used to spray water toward the surface of the heat exchange plate (23).

2. A water spray heat exchange component for high-temperature exhaust gas according to claim 1, characterized in that: The heat exchange plate (23) is arranged in an inclined shape, and the lower part of the heat exchange plate (23) is inclined towards the air inlet (21).

3. A water spray heat exchange component for high-temperature exhaust gas according to claim 2, characterized in that: In each group of spray mechanisms, the spray pipe (24) is located on a side of the heat exchange plate (23) close to the air inlet (21), and the spray head (241) of the spray pipe (24) is arranged to be inclined downward.

4. A water spray heat exchange component for high-temperature exhaust gas according to claim 2, characterized in that: A plurality of fins (232) are provided on the surface of the heat exchange plate (23), and the fins (232) are located on a side of the heat exchange plate (23) facing the air inlet (21).

5. A water spray heat exchange component for high-temperature exhaust gas according to claim 4, characterized in that: The fin (232) is tilted up and down toward one side of the air inlet (21), and a water-blocking space (233) is formed between the fin (232) and the heat exchange plate (23).

6. A water spray heat exchange component for high-temperature exhaust gas according to claim 4, characterized in that: A plurality of layers of fins (232) are arranged on the surface of the heat exchange plate (23), and the adjacent upper and lower layers of fins (232) are arranged in a staggered manner, and the two side edges of the fins (232) of the upper layer are located above the fins (232) of the lower layer.

7. The water spray heat exchange component for high-temperature exhaust gas according to claim 4, characterized in that: The upper portion of the fin (232) is an arc-shaped surface (234), the middle of the arc-shaped surface (234) is raised, and both sides are inclined downward.

8. The water spray heat exchange component for high-temperature exhaust gas according to claim 1, characterized in that: The spray pipe (24) is connected to a water inlet pipe (27); the inner cavity bottom surface (25) of the heat exchange box (2) is arranged in an inclined manner, and a water outlet (26) is arranged at the lowest point of the bottom surface (25).

9. The water spray heat exchange component for high-temperature exhaust gas according to claim 1, characterized in that: It also comprises an air intake pipe (1) and an exhaust gas purifier (3), wherein the air intake pipe (1) is connected to the air intake port (21) of the heat exchange box (2), and the exhaust gas purifier (3) is connected to the air outlet port (22) of the heat exchange box (2).

10. The water spray heat exchange component for high-temperature exhaust gas according to claim 1, characterized in that: The heat exchange plate (23) divides the inner cavity of the heat exchange box (2) into a plurality of chambers.

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