Pollution discharge flash steam recovery device

Abstract

The utility model discloses a pollution discharge flash steam recovery device which comprises a cavity, a third partition plate and a first partition plate are arranged on the cavity in a vertically spaced mode, a recovery cavity for containing clear water is arranged below the first partition plate, and a second spraying cavity communicated with the recovery cavity is arranged below the third partition plate. A through hole and a second spraying hole are formed in the first partition plate and the third partition plate respectively, a flash steam pipe extending into the recycling cavity is arranged on the cavity, and a water circulation pipe is connected into the recycling cavity. Flash steam is discharged into the recovery cavity through the flash steam pipe, clear water is heated through the flash steam, so that heat of the flash steam is recovered, the clear water is conveyed to the position above the third partition plate through the water circulating pipe, and the clear water forms a spraying water curtain flowing downwards through the second spraying holes of the third partition plate and the through holes of the first partition plate; therefore, the contact area with the flash steam is increased, the heat recovery efficiency of the flash steam is improved, and meanwhile, the influence of the flash steam on the external environment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of boiler flash steam recovery technology, and in particular to a blowdown flash steam recovery device. Background Technology

[0002] Steam, as a heat source, has been widely used in industrial production. After the steam releases heat, it condenses into hot water at a certain temperature. As the pressure decreases, some of the condensed water undergoes secondary evaporation, which is called flash steam.

[0003] Currently, the flash steam discharged from boilers is generally released directly into the atmosphere. However, this not only wastes flash steam resources, but also causes white pollution in the atmosphere. In addition, the temperature of the discharged flash steam is relatively high, which can easily affect nearby farmland and aquaculture, and may also cause safety problems for people in the surrounding area. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wastewater flash steam recovery device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flash steam recovery device includes a cavity with a partition plate three and a partition plate one spaced apart vertically. A recovery chamber for containing clean water is located below the partition plate one, and a spray chamber two connected to the recovery chamber is located below the partition plate three. A through hole and a spray hole two are respectively opened on the partition plate one and the partition plate three. The diameter of the spray hole two is smaller than the diameter of the through hole. A flash steam pipe extending into the recovery chamber is provided on the cavity, and a water circulation pipe is connected to the recovery chamber. The water circulation pipe passes through the cavity and extends above the partition plate three.

[0007] Preferably, the flash steam pipe is provided with a main pipe located in the recovery chamber, the upper end of the main pipe is provided with steam holes spaced apart, the main pipe is equipped with a cover covering the steam holes, a gap is provided between the cover and the main pipe, and a notch is provided at the lower end of the cover.

[0008] Preferably, a second partition is provided between the first partition and the third partition, and a first spray chamber is provided below the second partition. A first spray hole is provided on the second partition, which connects the second spray chamber and the first spray chamber. The through hole connects the recovery chamber and the first spray chamber.

[0009] Preferably, the water circulation pipe is connected to a circulation motor that transports clean water to the top of the partition three, and the partition three is provided with a layer of spray liquid.

[0010] Preferably, a valve is installed on the water circulation pipe, and the other end of the valve is connected to a water supply pipe.

[0011] Preferably, a steam circulation pipe is connected to the recovery chamber, the other end of which passes through the chamber and extends above the partition plate. A one-way valve communicating with the recovery chamber is installed on the steam circulation pipe.

[0012] Preferably, the upper end of the cavity is provided with a steam exhaust pipe, which extends inward to the top of the partition plate three.

[0013] Preferably, a level gauge and a thermometer are installed inside the recovery chamber.

[0014] The beneficial effects of this utility model are:

[0015] 1. Flash steam is discharged into the recovery chamber through the flash steam pipe to heat the clean water, thereby recovering the heat of the flash steam. Clean water is transported to the top of the third partition through the water circulation pipe. The clean water forms a downward spray water curtain through the spray hole two of the third partition and the through hole of the first partition, thereby increasing the contact area with the flash steam, improving the heat recovery efficiency of the flash steam, and reducing the impact of flash steam on the external environment.

[0016] 2. The diameter of the second spray hole is smaller than that of the through hole, meaning that less clean water flows downward through the second spray hole. This allows the clean water to accumulate on the third baffle plate when the water circulation pipe delivers it to the top of the third baffle plate, forming a layer of spray liquid. This spray liquid further enhances the contact with the flash steam. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the flash vapor pipe of this utility model;

[0019] Figure 3 This is a schematic diagram of the flash vapor pipe of this utility model.

[0020] In the diagram: Cavity 1, Partition 1 11, Recovery Cavity 111, Through Hole 112, Clean Water 113, Partition 2 12, Spray Cavity 1 121, Spray Hole 1 122, Partition 3 13, Spray Cavity 2 131, Spray Hole 2 132, Spray Liquid 133, Exhaust Pipe 14, Water Circulation Pipe 2, Circulation Motor 21, Water Supply Pipe 22, Valve 23, Steam Circulation Pipe 3, Check Valve 31, Flash Steam Pipe 4, Main Pipe 41, Steam Hole 42, Cover 43, Notch 431, Gap 44, Level Gauge 5, Thermometer 6. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] In the description of this specification, the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figures 1-3 As shown, a wastewater flash steam recovery device includes a cavity 1. The cavity 1 is provided with a partition 3 13 and a partition 11 at intervals on the upper and lower sides. The partition 11 and the partition 3 13 are respectively arranged to separate the interior of the cavity 1. Below the partition 11, there is a recovery chamber 111 for containing clean water 113. A level gauge 5 and a thermometer 6 are installed in the recovery chamber 111. The level gauge 5 is used to detect the water level of the clean water 113 in the recovery chamber 111, and the thermometer 6 is used to detect the temperature of the clean water 113 in the recovery chamber 111.

[0024] Below the partition 13, there is a spray chamber 131 that communicates with the recovery chamber 111. The partition 11 and the partition 13 are respectively provided with through holes 112 and spray holes 132. A water circulation pipe 2 is connected inside the recovery chamber 111. The water circulation pipe 2 passes through the chamber 1 and extends above the partition 13. A circulation motor 21 is connected to the water circulation pipe 2 to transport clean water 113 to the top of the partition 13. That is, the water circulation pipe 2 transports clean water 113 to the top of the partition 13 through the circulation motor 21, and the clean water 113 flows downward through the spray holes 132 and through holes 112 to form a spray water curtain.

[0025] The cavity 1 is provided with a flash steam pipe 4 extending into the recovery cavity 111. The flash steam pipe 4 is submerged in the clean water 113. One end of the flash steam pipe 4 is connected to the recovery cavity 111, and the other end of the flash steam pipe 4 is connected to the boiler to transport the boiler's blowdown flash steam into the cavity 1 to recover and utilize the heat of the flash steam.

[0026] Specifically, flash steam is discharged into recovery chamber 111 through flash steam pipe 4 to heat clean water 113, thereby recovering the heat of flash steam. Clean water 113 is transported to the top of partition 3 13 through water circulation pipe 2. Clean water 133 forms a downward-flowing spray water curtain through the spray hole 2 132 of partition 3 13 and the through hole 112 of partition 11. As flash steam flows into recovery chamber 111, through hole 112, spray chamber 2 131, and spray hole 2 132, it comes into contact with the spray water curtain, thereby increasing the contact area with flash steam, improving the heat recovery efficiency of flash steam, and reducing the impact of flash steam on the external environment.

[0027] Furthermore, a second partition 12 is provided between the first partition 11 and the third partition 13. There are multiple second partitions 12. A first spray chamber 121 is provided below the second partition 12. A first spray hole 122 is opened on the second partition 12 to connect the second spray chamber 131 and the first spray chamber 121. The through hole 112 connects the recovery chamber 111 and the first spray chamber 121. By setting the second partition 12, the spray water curtain formed by clean water is increased, thereby improving the contact between flash steam and the spray water curtain, and further improving the recovery and utilization of flash steam.

[0028] The diameter of the second spray hole 132 is smaller than that of the through hole 112, resulting in a smaller amount of clean water 113 flowing downward through the second spray hole 132. This means that a layer of spray liquid 133 is provided on the third partition plate 13. Specifically, when the water circulation pipe 2 transports the clean water 113 to the top of the third partition plate 13, a layer of spray liquid 133 is accumulated on the third partition plate 13. As the flash steam flows through the second spray hole 132 and upward through the third partition plate 13, the flash steam can have more sufficient contact with the spray liquid, thereby further improving the contact with the flash steam and increasing the heat recovery efficiency of the flash steam.

[0029] A steam circulation pipe 3 is connected inside the recovery chamber 111. The other end of the steam circulation pipe 3 passes through the chamber 1 and extends above the partition 3 13. The steam circulation pipe 3 is located above the spray liquid 133 so that the flash steam can be reintroduced into the recovery chamber 111 through the steam circulation pipe 3 to circulate and recover the heat of the flash steam. The lower end of the steam circulation pipe 3 is submerged below the level of the clean water 113, and a one-way valve 31 connected to the recovery chamber 111 is installed on the steam circulation pipe 3 to prevent the flash steam from directly entering the area above the partition 3 13 through the steam circulation pipe 3.

[0030] A valve 23 is installed on the water circulation pipe 2. The other end of the valve 23 is connected to a water supply pipe 22. When the flash steam heats the clean water 113, the valve 23 and the water supply pipe 22 work together to output hot clean water 113, and cold clean water 113 can be re-injected.

[0031] The upper end of the cavity 1 is provided with a steam exhaust pipe 14, which extends inward to the top of the partition plate 13. After the heat recovery of the flash steam in the cavity 1 is completed, the flash steam can be discharged outward through the steam exhaust pipe 14.

[0032] To prevent clean water 113 from entering the flash steam pipe 4, the flash steam pipe 4 is provided with a main pipe 41 located in the recovery chamber 111. The main pipe 41 is horizontally arranged in the recovery chamber 111. Steam holes 42 are spaced apart at the upper end of the main pipe 41. The steam holes 42 are used to transport flash steam into the chamber 1. A cover 43 covering the steam holes 42 is installed on the main pipe 41 to form a cavity above the steam holes 42 by covering them with the cover 43.

[0033] A gap 44 is provided between the cover 43 and the main pipe 41, and a notch 431 is provided at the lower end of the cover 43. The flash steam enters the recovery chamber 111 through the steam hole 42, the gap 44, and the notch 431. The notch 431 is located below the steam hole 42, thereby preventing clean water 113 from passing through the steam hole 42 from the notch 431 and entering the main pipe 41 and the flash steam pipe 4.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater flash steam recovery device, comprising a cavity (1), characterized in that: The cavity (1) is provided with partition three (13) and partition one (11) at intervals. Below partition one (11) is a recovery chamber (111) for containing clean water (113). Below partition three (13) is a spray chamber two (131) connected to the recovery chamber (111). Partition one (11) and partition three (13) are respectively provided with through holes (112) and spray holes two (132). The diameter of spray holes two (132) is smaller than that of through holes (112). A flash steam pipe (4) is provided on the cavity (1) and extends into the recovery chamber (111). A water circulation pipe (2) is connected in the recovery chamber (111). The water circulation pipe (2) passes through the cavity (1) and extends above partition three (13).

2. The wastewater flash steam recovery device as described in claim 1, characterized in that: The flash steam pipe (4) is provided with a main pipe (41) located in the recovery chamber (111). The upper end of the main pipe (41) is provided with steam holes (42) spaced apart. The main pipe (41) is equipped with a cover (43) covering the steam holes (42). A gap (44) is provided between the cover (43) and the main pipe (41), and a notch (431) is provided at the lower end of the cover (43).

3. The wastewater flash steam recovery device as described in claim 1, characterized in that: A second partition (12) is provided between the first partition (11) and the third partition (13). A first spray chamber (121) is provided below the second partition (12). A first spray hole (122) is provided on the second partition (12) to connect the second spray chamber (131) and the first spray chamber (121). The through hole (112) connects the recovery chamber (111) and the first spray chamber (121).

4. A wastewater flash steam recovery device as described in any one of claims 1 to 3, characterized in that: The water circulation pipe (2) is connected to a circulation motor (21) that transports clean water (113) to the top of the partition plate three (13), and the partition plate three (13) is provided with a layer of spray liquid (133).

5. A wastewater flash steam recovery device as described in any one of claims 1 to 3, characterized in that: A valve (23) is installed on the water circulation pipe (2), and the other end of the valve (23) is connected to a water supply pipe (22).

6. A wastewater flash steam recovery device as described in any one of claims 1 to 3, characterized in that: The recovery chamber (111) is connected to a steam circulation pipe (3). The other end of the steam circulation pipe (3) passes through the chamber (1) and extends to the top of the partition plate (13). A one-way valve (31) connecting the recovery chamber (111) is installed on the steam circulation pipe (3).

7. A wastewater flash steam recovery device as described in any one of claims 1 to 3, characterized in that: The cavity (1) is provided with an exhaust pipe (14) at its upper end, and the exhaust pipe (14) extends inward to the top of the partition plate three (13).

8. A wastewater flash steam recovery device as described in any one of claims 1 to 3, characterized in that: The recovery chamber (111) is equipped with a level gauge (5) and a thermometer (6).

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