Dustproof self-cooling quench tower inlet structure
The combination of a high-efficiency atomizing dual-fluid nozzle and an anti-dust self-cooling structure solves the problem of salt scaling in the flue gas, achieves rapid cooling and dust prevention, ensures equipment safety, and avoids equipment blockage and reduced heat exchange effect.
Patent Information
- Application Number
- CN202422342707.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The vaporized salts in the flue gas change from gaseous to solid during the rapid cooling process, and adhere to the rapid cooling equipment to form scale, affecting the safe operation of the equipment.
It adopts a high-efficiency atomizing dual-fluid nozzle and a dust-proof self-cooling structure, and prevents salt adhesion through a combination of spraying and air film blowing. The coordinated use of the tapered sleeve, air guide cavity, cooling water chamber and air pipe achieves rapid cooling and dust prevention.
The flue gas is cooled to saturation temperature in a very short time, preventing dust accumulation and scaling in the equipment and ensuring safe and reliable operation of the equipment.
Smart Images
Figure CN223345424U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of environmental protection equipment, and in particular to an inlet structure of a self-cooling rapid cooling tower to prevent dust accumulation. Background Art
[0002] With increasing environmental protection requirements, the current terminal treatment method for organic waste gas and wastewater generally relies on high-temperature incineration. Elements such as sulfur and chlorine contained in organic matter are ultimately burned into acidic substances such as sulfides and chlorides. Incineration equipment produces high-temperature flue gas (800-1200°C), which is highly corrosive and high-temperature. This high-temperature flue gas must be cooled and deacidified to meet standards before it can be discharged. Rapid cooling can reduce the flue gas to a temperature range suitable for subsequent deacidification equipment. Rapid cooling is typically performed using water spray. The acidic substances in the flue gas dissolve in the water, forming strong acids that are highly corrosive. Dust contained in the flue gas can accumulate on the inlet structure of the quench tower. The vaporized salts in the flue gas, due to the temperature drop during the quenching process, transform from a gaseous state to a solid state. These sticky salts can adhere to the quenching equipment, forming scaling and seriously affecting its safe operation.
[0003] Therefore, the present application provides an anti-dust accumulation self-cooling rapid cooling tower inlet structure to solve the above problems. Utility Model Content
[0004] The present application provides an anti-dust accumulation self-cooling quenching tower inlet structure, which aims to solve the problems raised in the background technology that the vaporized salts in the existing flue gas are converted from gaseous to solid salts due to the temperature drop during the quenching process, and are sticky and will also adhere to the quenching equipment to form scaling, seriously affecting the safe operation of the equipment.
[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: an inlet structure of a dust-proof self-cooling rapid cooling tower, comprising a tower body, a conical sleeve sleeved on the tower body, an end of the tower body away from the conical sleeve fixedly connected to an exhaust gas outlet connected to the tower body, and a spray structure arranged on the tower body, wherein the end of the conical sleeve close to the tower body extends to the interior of the tower body; the spray structure comprises a first water pipe fixedly plugged into the tower body and connected to the tower body, and a cooling spray gun fixedly mounted on the first water pipe. The cooling spray gun adopts a high-efficiency atomizing two-fluid nozzle, which sprays into the tower body with a certain spray flow rate, spray area, and flow rate. In this rapid cooling equipment, the temperature of the high-temperature flue gas is reduced to the target value within a very short cooling time and space. The number of cooling spray guns should cover the entire tower cross-section.
[0006] The conical sleeve is provided with a dust-proof self-cooling structure, which includes a conical tube inserted on the conical sleeve away from one end of the tower body, an air guide cavity provided between the conical tube and the conical sleeve, and several air pipes inserted on the conical sleeve and connected with the air guide cavity for introducing gas into the air guide cavity; the dust-proof self-cooling structure also includes a cooling water chamber provided on the conical sleeve, several second water pipes inserted on the conical sleeve and connected with the cooling water cavity for introducing liquid into the cooling water cavity, several drainage holes provided at one end of the conical sleeve close to the tower body and connected with the cooling water cavity for discharging liquid in the cooling water cavity, and an annular cavity provided between the tower body and the conical sleeve for guiding liquid. During operation, cooling water enters the cooling water chamber through the second water pipe, flows around the inner wall of the tapered sleeve, cooling it. It is then sprayed into the tower along the annular cavity formed by the outer wall of the tapered sleeve and the inner wall of the tower. The water forms a conical structure, thoroughly agitating and mixing with the high-temperature flue gas, forming a water film on the tower wall. The flue gas is pre-cooled by the second water pipe, the cooling water chamber, the drain hole, and the annular cavity. It then passes through several cooling spray guns installed within the tower, where it is further sprayed down to its saturation temperature before being discharged from the exhaust outlet below the tower. It is worth noting that, through the coordination of the air pipe, the conical tube and the air guide cavity, when compressed air is introduced into the air pipe, the compressed air is blown out along the air guide cavity, forming an air film on the upper surface of the conical sleeve, isolating the conical sleeve from the flue gas to be treated, and at the same time sweeping the dust adsorbed on the upper surface of the conical sleeve, so that the dust and molten salts in the flue gas cannot adhere to the upper surface of the conical sleeve, which can effectively prevent the pollutants in the high-temperature flue gas from scaling on the surface of the conical sleeve after cooling, causing equipment blockage or reducing the heat exchange effect. The present application can cool the flue gas to the saturation temperature in a very short time by using the first water pipe in conjunction with the cooling spray gun of the dual-fluid nozzle and by using the second water pipe, the cooling water chamber, the drainage hole and the annular cavity; by using the air pipe, the conical tube and the air guide cavity, the tower body can be free from dust accumulation and scaling failure, and it is safe and reliable to use.
[0007] Preferably, to change the pressure of the gas as it is discharged from the air guide cavity, the conical tube is composed of a circular ring, a first conical tube, and a second conical tube, with the first conical tube fixedly connected between the circular ring and the second conical tube. The first and second conical tubes cooperate to make the cross-sectional interior of the air guide cavity larger than the outlet. Consequently, when the gas is discharged, the gas pressure accelerates its flow rate, allowing it to move downward along the inner wall of the conical sleeve, clearing dust from the inner wall of the conical sleeve during this movement.
[0008] Preferably, in order to facilitate the integral molding of the tapered tube, the angle between the first tapered tube and the ring close to the tapered sleeve is 105°, and the angle between the first tapered tube and the second tapered tube close to the tapered sleeve is 165°.
[0009] Preferably, in order to facilitate monitoring of the internal pressure of the cooling water chamber: a plurality of pressure transmitters are fixedly installed inside the cooling water chamber. The pressure transmitters can monitor the internal pressure of the cooling water chamber and send out an alarm signal when the pressure in the cooling water chamber is insufficient.
[0010] Preferably, a plurality of temperature transmitters are fixedly mounted on the exhaust gas outlet, and the measured values of the temperature transmitters are correlated with the flow rate of the cooling spray gun.
[0011] The present application can cool the flue gas to the saturation temperature in a very short time through the coordinated use of the first water pipe and the cooling spray gun of the dual-fluid nozzle, and through the coordinated use of the second water pipe, the cooling water chamber, the drainage hole and the annular cavity; through the coordinated use of the air pipe, the conical tube and the air guide cavity, the tower body can be free from dust accumulation and scaling failure, and is safe and reliable to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of an inlet structure of a self-cooling quenching tower that prevents dust accumulation;
[0013] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;
[0014] Figure 3 Schematic diagram of the structure of the tapered tube;
[0015] In the picture:
[0016] 1. Tower body; 2. Exhaust gas outlet; 21. Temperature transmitter; 3. Spray structure; 31. First water pipe; 32. Cooling spray gun; 4. Conical sleeve; 5. Anti-dust self-cooling structure; 51. Conical tube; 511. Ring; 512. First conical tube; 513. Second conical tube; 52. Air guide chamber; 53. Air pipe; 54. Cooling water chamber; 541. Pressure transmitter; 55. Second water pipe; 56. Drain hole; 57. Annular chamber. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0018] This embodiment provides a dust-proof self-cooling rapid cooling tower inlet structure, such as Figure 1-3 As shown, the quenching tower inlet structure comprises a tower body 1, a tapered sleeve 4 sleeved on the tower body 1, an exhaust gas outlet 2 fixedly connected to the tower body 1 at the end of the tower body 1 away from the tapered sleeve 4, and a spray structure 3 disposed on the tower body 1. The end of the tapered sleeve 4 proximal to the tower body 1 extends into the interior of the tower body 1. The spray structure 3 comprises a first water pipe 31 fixedly plugged into and connected to the tower body 1, and a cooling spray gun 32 fixedly mounted on the first water pipe 31. The cooling spray gun 32 utilizes a high-efficiency atomizing two-fluid nozzle, spraying into the tower body 1 at a specific spray flow rate, spray area, and flow rate. This allows the high-temperature flue gas in this quenching equipment to be cooled to the target temperature within a very short cooling time and space. The number of cooling spray guns 32 should cover the entire cross-section of the tower body 1. For towers with a diameter of less than 1 meter, the number of cooling spray guns 32 is preferably one; for towers with a diameter of 1 to 2.5 meters, the number of cooling spray guns 32 is preferably three. The cooling section is between the cooling spray gun 32 and the exhaust gas outlet 2, and its length should be 3 to 8 times the diameter.
[0019] The conical sleeve 4 is provided with a dust-proof self-cooling structure 5, which includes a conical tube 51 inserted into the conical sleeve 4 at one end away from the tower body 1, an air guide cavity 52 arranged between the conical tube 51 and the conical sleeve 4, and several air pipes 53 inserted into the conical sleeve 4 and connected to the air guide cavity 52 for introducing gas into the air guide cavity 52; the dust-proof self-cooling structure 5 also includes a cooling water chamber 54 opened on the conical sleeve 4, several second water pipes 55 inserted into the conical sleeve 4 and connected to the cooling water chamber 54 for introducing liquid into the cooling water chamber 54, several drainage holes 56 opened at the end of the conical sleeve 4 close to the tower body 1 and connected to the cooling water chamber 54 for discharging the liquid in the cooling water chamber 54, and an annular cavity 57 arranged between the tower body 1 and the conical sleeve 4 for guiding the liquid. During operation, cooling water enters the cooling water chamber 54 through the second water pipe 55, flows around the inner wall of the tapered sleeve 4, thereby cooling it. It is then sprayed into the tower body 1 along the annular cavity 57 formed by the outer wall of the tapered sleeve 4 and the inner wall of the tower body 1. The water forms a conical structure, thoroughly agitating and mixing with the high-temperature flue gas, forming a water film on the tower wall. The flue gas is pre-cooled by the second water pipe 55, the cooling water chamber 54, the drain hole 56, and the annular cavity 57. It then passes through the cooling lances 32 installed in the tower body 1, where it is further sprayed down to the flue gas's saturation temperature before being discharged from the exhaust gas outlet 2 below the tower body 1. It is worth noting that, through the cooperation of the air pipe 53, the conical tube 51 and the air guide cavity 52, when compressed air is introduced into the air pipe 53, the compressed air is blown out along the air guide cavity 52, forming an air film on the upper surface of the conical sleeve 4, isolating the conical sleeve 4 from the flue gas to be treated, and at the same time blowing away the dust adsorbed on the upper surface of the conical sleeve 4, so that the dust and molten salts in the flue gas cannot adhere to the upper surface of the conical sleeve 4, which can effectively prevent the pollutants in the high-temperature flue gas from scaling on the surface of the conical sleeve 4 after cooling, causing equipment blockage or reducing the heat exchange effect. The present application can cool the flue gas to the saturation temperature in a very short time through the coordinated use of the first water pipe 31 and the cooling spray gun 32 of the dual-fluid nozzle, and through the coordinated use of the second water pipe 55, the cooling water chamber 54, the drainage hole 56 and the annular cavity 57; through the coordinated use of the air pipe 53, the tapered tube 51 and the air guide cavity 52, the tower body 1 can be prevented from dust accumulation and scaling failure, and is safe and reliable to use.
[0020] Specifically, the conical tube 51 consists of a circular ring 511, a first conical tube 512, and a second conical tube 513. The first conical tube 512 is fixedly connected between the circular ring 511 and the second conical tube 513. The cooperation between the first conical tube 512 and the second conical tube 513 allows the cross-sectional internal cavity of the air guide cavity 52 to be larger than the outlet. Consequently, when the gas is discharged, the gas pressure accelerates its flow rate, allowing the gas to move downward along the inner wall of the conical sleeve 4, sweeping away dust on the inner wall of the conical sleeve 4 during this movement. The gap between the conical tube 51 and the upper surface of the conical sleeve 4 should preferably be 3 to 6 mm; the gap between the outlet of the air guide cavity 52 of the conical tube 51 and the upper surface of the conical sleeve 4 should be 1 to 3 mm. The length of the conical tube 51 should preferably be 150 to 200 mm, but not less than 100 mm. The velocity of the gas ejected from the annular air guide cavity 52 is preferably 15 to 25 m / s, and not less than 10 m / s.
[0021] More specifically, the included angle between the first conical tube 512 and the ring 511 close to the conical sleeve 4 is 105°, and the included angle between the first conical tube 512 and the second conical tube 513 close to the conical sleeve 4 is 165°.
[0022] Specifically, a plurality of pressure transmitters 541 are fixedly installed inside the cooling water chamber 54. The pressure transmitters 541 can monitor the pressure inside the cooling water chamber 54 and issue an alarm signal when the pressure inside the cooling water chamber 54 is insufficient. The number of pressure transmitters 541 is preferably two.
[0023] Specifically, a plurality of temperature transmitters 21 are fixedly mounted on the exhaust gas outlet 2. The measured value of the temperature transmitter 21 is correlated with the flow rate of the cooling spray gun 32. The number of the temperature transmitters 21 is preferably three.
[0024] It should be noted that the conical sleeve 4 and the conical tube 51 are both made of high-temperature resistant alloy materials, and the rest of the main structure except the conical sleeve 4 and the conical tube 51 is made of non-metallic fiberglass reinforced plastics.
[0025] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.
Claims
1. An anti-dust accumulation self-cooling rapid cooling tower inlet structure, comprising a tower body (1), a conical sleeve (4) sleeved on the tower body (1), an exhaust gas outlet (2) fixedly arranged on the tower body (1) at one end away from the conical sleeve (4) and connected to the tower body (1), and a spray structure (3) arranged on the tower body (1), wherein the conical sleeve (4) extends from one end close to the tower body (1) to the interior of the tower body (1); Its characteristics are: The spray structure (3) comprises a first water pipe (31) fixedly plugged into the tower body (1) and in communication with the tower body (1), and a cooling spray gun (32) fixedly mounted on the first water pipe (31); The conical sleeve (4) is provided with a dust-proof self-cooling structure (5), which comprises a conical tube (51) plugged into the conical sleeve (4) at one end away from the tower body (1), an air guide cavity (52) provided between the conical tube (51) and the conical sleeve (4), and a plurality of air pipes (53) plugged into the conical sleeve (4) and connected to the air guide cavity (52) for introducing air into the air guide cavity (52); the dust-proof self-cooling structure (5) further comprises a conical tube (51) plugged into the conical sleeve (4) and connected to the air guide cavity (52) for introducing air into the air guide cavity (52); A cooling water chamber (54) on the conical sleeve (4), a plurality of second water pipes (55) plugged into the conical sleeve (4) and connected to the cooling water chamber (54) for introducing liquid into the cooling water chamber (54), a plurality of drainage holes (56) provided at one end of the conical sleeve (4) close to the tower body (1) and connected to the cooling water chamber (54) for discharging liquid from the cooling water chamber (54), and an annular cavity (57) provided between the tower body (1) and the conical sleeve (4) for guiding liquid.
2. The dust-proof self-cooling rapid cooling tower inlet structure according to claim 1 is characterized in that: The conical tube (51) is composed of a circular ring (511), a first conical tube (512) and a second conical tube (513), and the first conical tube (512) is fixedly connected between the circular ring (511) and the second conical tube (513).
3. The dust-proof self-cooling rapid cooling tower inlet structure according to claim 2, characterized in that: The included angle between the first conical tube (512) and the circular ring (511) close to the conical sleeve (4) is 105°, and the included angle between the first conical tube (512) and the second conical tube (513) close to the conical sleeve (4) is 165°.
4. The dust-proof self-cooling rapid cooling tower inlet structure according to claim 1, characterized in that: Several pressure transmitters (541) are fixedly installed inside the cooling water chamber (54).
5. The dust-proof self-cooling rapid cooling tower inlet structure according to claim 1, characterized in that: A plurality of temperature transmitters (21) are fixedly mounted on the exhaust gas outlet (2).