A flash tank

Abstract

The utility model discloses a kind of flash tanks, including tank body, the bottom end of tank body is fixedly installed with mounting bracket, the outside of tank body is provided with feed pipe, and the top and bottom of tank body are provided with steam exhaust pipe and discharge pipe respectively, support pipe is positioned at the height position of feed pipe in tank body, and the outside of support pipe is equidistantly provided with nozzle, equidistantly fixed with mounting rod on the outside of support pipe, and the end of mounting rod is fixed with the inner wall of tank body, the end of feed pipe is inserted into tank body and is connected with support pipe, impact plate is installed above support pipe in tank body, arc plate is installed at the bottom end in tank body, the beneficial effects of the utility model: the utility model can eliminate pipeline water hammer effect, reduce the temperature of condensate by increasing flash tank, by setting multiple nozzles, conical impact plate and internal fixing structure, increase the flash evaporation area of high-temperature condensate, make it vaporize more quickly, more thoroughly.

Description

Technical Field

[0001] This utility model relates to the field of applied technology of chemical engineering principles, specifically a flash evaporator. Background Technology

[0002] In energy-intensive industries such as chemical, petroleum, and energy, high-temperature condensates (such as high-temperature cooling water or process condensates) typically carry a large amount of sensible heat. Direct discharge or cooling treatment of these condensates would result in significant energy waste and increased equipment operating costs, thus necessitating condensate recovery. However, current condensate recovery methods often involve high temperatures, leading to water hammer effects, increased pipeline vibration, and a higher risk of leakage. To address this, we propose a flash tank. Utility Model Content

[0003] The purpose of this invention is to provide a flash evaporator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flash evaporator, comprising a tank body, a mounting bracket fixedly installed at the bottom of the tank body, a feed pipe provided on the outer side of the tank body, and a steam exhaust pipe and a discharge pipe respectively provided at the top and bottom of the tank body, a support pipe provided inside the tank body at the height of the feed pipe, and nozzles equidistantly arranged on the outer side of the support pipe, mounting rods equidistantly fixed to the outer side of the support pipe, and the ends of the mounting rods fixedly connected to the inner wall of the tank body, the end of the feed pipe extending into the tank body and connecting to the support pipe, an impact plate installed above the support pipe inside the tank body, and an arc-shaped plate installed at the bottom of the tank body.

[0005] Preferably, the impact plate has a conical structure with an opening at its center, the end of the nozzle faces the inner wall of the impact plate, and through holes are equidistantly opened on the outer side of the impact plate.

[0006] Preferably, the area between two adjacent mounting rods on the outer side of the support tube forms a liquid leakage zone, the inner wall of the support tube is fixedly connected with fixed rods at equal intervals, and the area enclosed by the ends of multiple fixed rods forms a circular communication port, and the area between two adjacent fixed rods forms a flow zone for liquid circulation.

[0007] Preferably, mounting blocks are fixedly connected to the bottom of the arc-shaped plate at equal intervals, and the mounting blocks are in an L-shaped structure. The ends of the mounting blocks are connected to the inner wall of the tank, and the area between the arc-shaped plate and the inner wall of the tank forms a channel for liquid flow.

[0008] Preferably, a control valve is installed on the outside of the discharge pipe.

[0009] Preferably, a filter screen is installed at the top of the inner wall of the tank.

[0010] Preferably, a buffer ring is provided on the outer side of the impact plate, and the buffer ring is fixedly connected to the tank body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By adding a flash tank, this utility model can eliminate the water hammer effect in the pipeline and reduce the temperature of the condensate. By setting multiple nozzles, conical impact plates and internal fixing structures in the tank, the flash evaporation area of ​​the high-temperature condensate is significantly increased, making its vaporization faster and more thorough, thereby greatly improving the heat recovery efficiency.

[0013] 2. The tank body of this utility model adopts a stepped vapor-liquid separation design and is combined with a special arc plate, which effectively realizes the drying and purification of steam and the stable discharge of condensate. While ensuring the quality of the produced steam, it reduces equipment vibration and impact, and improves the stability and reliability of operation. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the present invention.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the impact plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure of the support tube of this utility model;

[0018] Figure 5 This is a schematic diagram of the arc-shaped plate of this utility model.

[0019] In the diagram: 1. Tank body; 2. Mounting bracket; 3. Feed pipe; 4. Steam exhaust pipe; 5. Discharge pipe; 6. Impact plate; 7. Through hole; 8. Support pipe; 9. Nozzle; 10. Mounting rod; 11. Fixing rod; 12. Arc plate; 13. Mounting block; 14. Filter screen; 15. Control valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 and Figure 2The present invention provides a technical solution: a flash tank, including a tank body 1, a mounting bracket 2 fixedly installed at the bottom end of the tank body 1, a feed pipe 3 provided on the outside of the tank body 1, and a steam exhaust pipe 4 and a discharge pipe 5 respectively provided at the top and bottom of the tank body 1.

[0022] A support pipe 8 is installed inside the tank body 1 at the height of the feed pipe 3, and nozzles 9 are equidistantly arranged on the outside of the support pipe 8. Mounting rods 10 are fixedly connected to the outside of the support pipe 8 at equal intervals, and the end of the mounting rod 10 is fixedly connected to the inner wall of the tank body 1. The end of the feed pipe 3 extends into the tank body 1 and connects to the support pipe 8. An impact plate 6 is installed inside the tank body 1 above the support pipe 8, and an arc plate 12 is installed at the bottom inside the tank body 1.

[0023] Please see Figure 3 The impact plate 6 has a cone-shaped structure with an opening at the center. The end of the nozzle 9 is positioned facing the inner wall of the impact plate 6. Through holes 7 are equidistantly opened on the outer side of the impact plate 6.

[0024] It should be noted that the through hole 7 plays a certain role in obstructing and redirecting the steam flow, causing some of the heavier droplets to separate from the steam due to inertia and fall back down.

[0025] Please see Figure 4 The area between two adjacent mounting rods 10 on the outside of the support tube 8 forms a liquid leakage zone. Fixed rods 11 are fixed at equal intervals on the inner wall of the support tube 8, and the area enclosed by the ends of multiple fixed rods 11 forms a circular communication port. The area between two adjacent fixed rods 11 forms a flow zone for liquid circulation.

[0026] It should be noted that the support tube 8, through the fixing rod 11 structure on its inner wall, not only ensures structural strength but also provides multiple flow zones for the fluid, allowing the liquid to be initially dispersed.

[0027] Please see Figure 5 The bottom of the arc plate 12 is fixed with mounting blocks 13 at equal intervals, and the mounting blocks 13 are in an L-shaped structure. The ends of the mounting blocks 13 are connected to the inner wall of the tank 1, and the area between the arc plate 12 and the inner wall of the tank 1 forms a channel for liquid flow.

[0028] It should be noted that when this utility model is used, the 130°C high-temperature condensate enters the tank 1 through the feed pipe 3 and flows into the support pipe 8 connected to it. The initially dispersed high-temperature condensate is sprayed out at high speed from multiple nozzles 9 distributed on the outside of the support pipe 8. The water sprayed from the nozzles 9 is directly aimed at the inner wall of the impact plate 6 located above. When the high-pressure condensate is sprayed out from the nozzles 9, the space expands instantly and the pressure drops sharply, which meets the conditions for flash evaporation. The liquid hits the inner wall of the impact plate 6 at a certain speed and is broken and splashed into a large number of small droplets and liquid films, which greatly increases the surface area of ​​the liquid. The huge surface area allows the sensible heat contained in the high-temperature condensate to be released quickly and fully, thereby rapidly vaporizing and generating a large amount of secondary low-temperature steam.

[0029] The generated steam and un-sublimated droplet mixture flow upwards and enter the separation stage. The upward-moving steam mixture first passes through the through hole 7 on the outside of the impact plate 6. The through hole 7 plays a certain role in blocking and deflecting the steam flow, causing some of the heavier droplets to separate from the steam due to inertia and fall back. The steam continues to rise and passes through the filter screen 14. The filter screen 14 acts as a mist eliminator, intercepting and condensing the tiny droplets entrained in the steam, ensuring that the steam drawn from the steam discharge pipe 4 is dry, improving the steam quality and heat recovery efficiency. 0.1MPa steam is output through the top steam discharge pipe 4 for use by the preheater.

[0030] Unvaporized low-temperature condensate and liquid separated from the impact plate 6 and filter screen 14 fall under the influence of gravity. The liquid falls into the bottom of the tank through the liquid leakage area between the mounting rods 10 on the outside of the support pipe 8. The arc plate 12 at the bottom of the tank 1 guides the collected condensate to its edge and flows smoothly to the bottom of the tank 1 through the channel formed between the arc plate 12 and the inner wall of the tank 1. The condensate in the tank is <100℃ and is discharged through the discharge pipe 5 and sent to the polymerization area for reuse, thus eliminating the water hammer effect.

[0031] Please see Figure 1 and Figure 2 A control valve 15 is installed on the outside of the discharge pipe 5.

[0032] It should be noted that the control valve 15 on the discharge pipe 5 is used to control the liquid level and discharge speed. The structure of the arc plate 12 avoids the liquid from directly impacting the bottom end cap of the tank, reducing vibration and noise.

[0033] Please see Figure 1 A filter screen 14 is installed at the top of the inner wall of the tank 1.

[0034] It should be noted that the filter screen 14 acts as a mist eliminator, intercepting and condensing the tiny droplets entrained in the steam, ensuring that the steam drawn from the steam discharge pipe 4 is dry, thereby improving steam quality and heat recovery efficiency.

[0035] A buffer ring is provided on the outer side of the impact plate 6, and the buffer ring is fixedly connected to the tank body 1.

[0036] It should be noted that the buffer ring on the outside of the impact plate 6 and the mounting block 13 and other structures effectively absorb the impact force and vibration generated during liquid jetting and flow, ensuring the long-term stable operation of the equipment.

[0037] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flash evaporator, characterized in that, The tank includes a tank body (1), a mounting bracket (2) is fixedly installed at the bottom of the tank body (1), a feed pipe (3) is provided on the outside of the tank body (1), and a steam exhaust pipe (4) and a discharge pipe (5) are provided at the top and bottom of the tank body (1), a support pipe (8) is provided at the height of the feed pipe (3) inside the tank body (1), and nozzles (9) are provided at equal intervals on the outside of the support pipe (8), mounting rods (10) are fixedly connected at equal intervals on the outside of the support pipe (8), and the end of the mounting rod (10) is fixedly connected to the inner wall of the tank body (1), the end of the feed pipe (3) extends into the tank body (1) and connects to the support pipe (8), an impact plate (6) is installed above the support pipe (8) inside the tank body (1), and an arc plate (12) is installed at the bottom inside the tank body (1).

2. A flash evaporator according to claim 1, characterized in that: The impact plate (6) has a cone-shaped structure with an opening at the center. The end of the nozzle (9) is positioned facing the inner wall of the impact plate (6). Through holes (7) are equidistantly opened on the outer side of the impact plate (6).

3. A flash evaporator according to claim 1, characterized in that: The area between two adjacent mounting rods (10) on the outside of the support tube (8) forms a liquid leakage area. Fixed rods (11) are fixed at equal intervals on the inner wall of the support tube (8), and the area enclosed by the ends of multiple fixed rods (11) forms a circular communication port. The area between two adjacent fixed rods (11) forms a flow area for liquid circulation.

4. A flash evaporator according to claim 1, characterized in that: The bottom of the arc plate (12) is fixed with mounting blocks (13) at equal intervals, and the mounting blocks (13) are in an L-shaped structure. The end of the mounting blocks (13) is connected to the inner wall of the tank (1). The area between the arc plate (12) and the inner wall of the tank (1) forms a channel for liquid flow.

5. A flash evaporator according to claim 1, characterized in that: A control valve (15) is installed on the outside of the discharge pipe (5).

6. A flash evaporator according to claim 1, characterized in that: A filter screen (14) is installed at the top of the inner wall of the tank (1).

7. A flash evaporator according to claim 1, characterized in that: A buffer ring is provided on the outer side of the impact plate (6), and the buffer ring is fixedly connected to the tank body (1).

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