A starch pipe bundle waste heat discharge washing device

Abstract

This invention provides a waste heat emission scrubbing device for starch tube bundles, including a scrubbing tower supported by a bracket at its bottom. A drain pipe with a valve is located in the middle of the bottom of the scrubbing tower. A buffer tank is located inside the scrubbing tower, and an air inlet pipe is located below the buffer tank. A vertical pipe is connected to one end of the air inlet pipe inside the scrubbing tower, and an arc-shaped cover plate with several openings is located at the upper end of the vertical pipe. Multiple nozzles are located inside the buffer tank. In this invention, the enlarged inner diameter of the buffer tank slows down the exhaust gas velocity and prolongs the residence time. The nozzles, distributed at different heights and angles, form a multi-height liquid curtain. The rocker plate below the nozzles can change the water spray angle, increasing the height and horizontal coverage, allowing the exhaust gas to fully and comprehensively contact the sprayed liquid. During this process, dust can be fully captured, and harmful gases such as sulfur dioxide and hydrogen chloride can be rapidly dissolved, achieving efficient exhaust gas purification.

Description

Technical Field

[0001] This utility model belongs to the field of waste heat treatment technology, and in particular relates to a waste heat emission and washing device for starch tube bundles. Background Technology

[0002] In the starch processing production process, the operation of starch tube bundles generates a large amount of waste gas. This waste gas not only contains considerable waste heat, but also contains dust and corrosive and irritating harmful gases such as sulfur dioxide and hydrogen chloride.

[0003] As a key piece of equipment for removing various pollutants from waste gas, scrubbing towers have revealed a prominent problem in practical applications: insufficient gas-liquid contact. Currently, the spray structures inside some scrubbing towers are relatively simple, often using only spray heads similar to shower heads. Due to the limitations of their design, these spray heads can only achieve a relatively simple and planar spraying method, making it difficult to construct a multi-layered, all-round liquid curtain.

[0004] As a result, when the exhaust gas rises in the scrubbing tower, it cannot make full and effective contact with the sprayed liquid at all levels, so that the pollutants such as dust and harmful gases in the exhaust gas cannot be fully captured and dissolved, which leads to a significant reduction in the final exhaust gas treatment effect. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a starch tube bundle waste heat emission washing device, and the technical solution adopted is as follows:

[0006] A starch tube bundle waste heat emission washing device includes a washing tower, the bottom of which is supported by a bracket. A drain pipe with a valve is provided in the middle of the bottom of the washing tower. A buffer tank is provided in the washing tower. An air inlet pipe is provided in the washing tower and below the buffer tank. A vertical pipe is connected to one end of the air inlet pipe inside the washing tower. An arc-shaped cover plate is provided at the upper end of the vertical pipe. Several openings are provided in the arc-shaped cover plate.

[0007] Multiple nozzles are installed inside the buffer tank, and these nozzles are distributed at different heights and angles.

[0008] Furthermore, the inner diameter of the buffer tank is larger than the inner diameter of the rest of the scrubbing tower. This structure not only slows down the flow rate of the exhaust gas and prolongs its residence time, but also helps to reduce the impact of the exhaust gas on the internal structure of the scrubbing tower.

[0009] Furthermore, the riser and the air inlet pipe are connected in a T-shape, and the lower end of the riser is designed with an opening. This T-shaped connection method can prevent sewage from accumulating in the riser or the air inlet pipe.

[0010] Furthermore, the nozzle has a flat outlet end, and a rocker plate is provided below the outlet end. The flat outlet end, together with the rocker plate, greatly enhances the gas-liquid mixing effect.

[0011] Furthermore, the nozzle is fixed in the buffer tank by an outer fixing sleeve, and the tail ends of multiple nozzles are connected to the connecting pipe. The fixing sleeve ensures that the nozzle is stably installed in the buffer tank, preventing shaking or displacement during spraying.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The increased inner diameter of the buffer tank area in this invention slows down the exhaust gas velocity and prolongs its residence time. Multiple nozzles distributed at different heights and angles within the buffer tank create multiple liquid curtains of varying heights. A rocker arm positioned below the nozzle outlet changes the water spray angle, allowing the water to be sprayed upwards at a greater angle and higher speed, increasing both the spray height and the horizontal coverage. This series of designs ensures full and comprehensive contact between the exhaust gas and the sprayed liquid. During this full contact, dust particles in the exhaust gas are effectively captured by the droplets, and water-soluble harmful gases such as sulfur dioxide and hydrogen chloride dissolve rapidly in the liquid, thus achieving highly efficient purification of the exhaust gas.

[0014] The T-shaped structure of the air inlet pipe and the riser, combined with the arc-shaped cover plate with openings at the upper end of the riser, allows the incoming exhaust gas to be evenly dispersed in the scrubbing tower, optimizing the uniform distribution of exhaust gas and ensuring more uniform contact between the subsequent exhaust gas and the spray liquid. Combined with the nozzles in the buffer tank, the overall scrubbing effect and efficiency are improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the nozzle and the connecting pipe of this utility model;

[0018] Figure 4 This is a schematic diagram of the riser structure of this utility model;

[0019] Figure 5 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 6 This is a utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0021] In the picture:

[0022] 1-Scrubber tower, 2-Support, 3-Buffer tank, 4-Nozzle, 41-Fixing sleeve, 42-Rocker, 5-Connecting pipe, 6-Air inlet pipe, 61-Riser pipe, 7-Drain pipe. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] As attached Figure 1-6 As shown.

[0025] A waste heat discharge washing device for starch tube bundles includes a washing tower 1. The bottom of the washing tower 1 is supported by a bracket 2. A drain pipe 7 is provided at the middle position of the bottom of the washing tower 1. A valve is provided in the drain pipe 7. When the valve is opened, the wastewater accumulated in the washing tower 1 can be discharged. The discharged wastewater can enter the wastewater recycling system, be filtered and reused.

[0026] A buffer tank 3 is provided in the scrubbing tower 1. The inner diameter of the buffer tank 3 is larger than the inner diameter of the rest of the scrubbing tower 1. When the exhaust gas enters the buffer tank 3 from the narrower part of the scrubbing tower 1, the gas velocity will decrease rapidly due to the sudden increase in space, according to the principle of fluid mechanics, so that the exhaust gas stays in the buffer tank 3 for a longer period of time.

[0027] An air inlet pipe 6 is installed in the washing tower 1 and below the buffer tank 3. Waste heat generated during starch processing enters the washing tower 1 through the air inlet pipe 6. A riser pipe 61 is connected to one end of the air inlet pipe 6 inside the washing tower 1. The riser pipe 61 and the air inlet pipe 6 are arranged in a T-shape. The specific structure is shown in the attached figure. Figure 2 , 4 As shown, an arc-shaped cover plate is provided at the upper end of the riser 61, and several openings are provided in the arc-shaped cover plate.

[0028] Based on the above structure, the exhaust gas entering the riser 61 will float upwards on its own due to its own characteristics. Therefore, the exhaust gas can be evenly dispersed into the scrubbing tower 1 through the openings in the arc-shaped cover plate.

[0029] Multiple nozzles 4 are provided inside the buffer tank 3. These nozzles 4 are distributed at different heights and angles. The different heights allow the gas entering the buffer tank 3 from the scrubbing tower 1 to come into contact with the sprayed liquid at different levels during its ascent. The different angles further enhance the gas-liquid mixing effect, and the sprayed liquid can completely seal the buffer tank 3.

[0030] As attached Figure 5 , 6 As shown, the outlet end of the nozzle 4 is set with a flat opening, which can form a liquid curtain on the horizontal cross section of the buffer tank 3 to effectively block and wash the rising exhaust gas. The nozzle 4 is fixed in the buffer tank 3 by the outer fixing sleeve 41, and the tail ends of multiple nozzles 4 are connected to the connecting pipe 5. The delivered water is diverted to each nozzle 4 through the connecting pipe 5.

[0031] Furthermore, a rocker plate 42 is provided below the water outlet of nozzle 4. While reducing the diameter of the water outlet port to allow the water to be pressurized and sprayed out to form a liquid curtain, it can also change the spray angle of the water at the outlet of nozzle 4, so that the water is sprayed upward at a greater elevation angle and a higher speed. On the one hand, the increased upward spray height allows the water to reach a higher position in buffer tank 3, giving it more opportunities to come into contact with the exhaust gas during the upward process, further extending the gas-liquid contact time. On the other hand, the greater spray elevation angle makes the water cover a wider range in the horizontal direction, thereby more comprehensively sealing the cross section of buffer tank 3.

[0032] The upper end of the scrubbing tower 1 can be connected to the subsequent gas filtration system through a pipe. The scrubbing tower 1 can filter dust and water-soluble harmful gases such as sulfur dioxide and hydrogen chloride in the exhaust gas through spraying. The subsequent filtration device can further remove residual fine particles, incompletely absorbed harmful gases and possible aerosols and other pollutants in the exhaust gas.

[0033] The working process of this device is as follows:

[0034] After the device is started, the connecting pipe 5 diverts the water to each nozzle 4. Multiple nozzles 4 with different heights and angles start to work. The pressurized water is sprayed out from the flat outlet end, forming a liquid curtain on the horizontal cross section of the buffer tank 3.

[0035] Waste gas containing waste heat generated during starch processing is transported to the scrubbing tower 1 through the inlet pipe 6. After entering the riser 61, the waste gas floats upward due to its own properties and is evenly dispersed within the scrubbing tower 1 through the openings on the arc-shaped cover plate. Subsequently, the waste gas rises into the buffer tank 3, where it comes into full contact with the sprayed liquid at different levels. This allows the dust in the waste gas to be effectively captured by the liquid droplets, and harmful gases that are soluble in water, such as sulfur dioxide and hydrogen chloride, are also quickly dissolved in the liquid, achieving preliminary purification of the waste gas.

[0036] The exhaust gas, after being initially purified by buffer tank 3, continues to rise and is discharged from the top of scrubbing tower 1, then enters the subsequent gas filtration device through a pipeline.

[0037] At the bottom of the scrubbing tower 1, as the scrubbing process continues, wastewater containing dust and dissolved harmful gases will accumulate. This wastewater can flow into the wastewater recycling system through the drain pipe 7. The wastewater recycling system will treat this wastewater and then return it to participate in the next round of exhaust gas scrubbing, thus realizing the recycling of water resources.

[0038] A valve is installed in the drain pipe 7, and the valve opening can be precisely adjusted through the control system. When the device is running, a liquid level sensor can be installed at the bottom of the washing tower 1 to monitor the liquid level in the washing tower 1 in real time, and adjust the opening of the drain valve according to the liquid level. If the liquid level rises quickly, it means that the spray water volume is greater than the drainage volume. At this time, the opening of the drain valve is increased to speed up the drainage speed. Conversely, if the liquid level drops too quickly, the opening of the drain valve can be appropriately reduced so that a certain height of sewage can be accumulated at the bottom of the washing tower 1 to prevent exhaust gas from leaking from the drain pipe 7.

[0039] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A starch tube bundle waste heat emission scrubbing device, comprising a scrubbing tower (1), the bottom of which is supported by a bracket (2), characterized in that: A drain pipe (7) with a valve is provided at the middle position of the bottom of the washing tower (1). A buffer tank (3) is provided in the washing tower (1). An air inlet pipe (6) is provided in the washing tower (1) and below the buffer tank (3). A riser pipe (61) is connected to one end of the air inlet pipe (6) inside the washing tower (1). An arc-shaped cover plate is provided at the upper end of the riser pipe (61). Several openings are provided in the arc-shaped cover plate. Multiple nozzles (4) are provided inside the buffer tank (3), and these multiple nozzles (4) are distributed at different heights and different angles.

2. The starch tube bundle waste heat emission washing device as described in claim 1, characterized in that: The inner diameter of the buffer tank (3) is larger than the inner diameter of the other parts of the washing tower (1).

3. The starch tube bundle waste heat emission washing device as described in claim 1, characterized in that: The riser (61) and the air intake pipe (6) are arranged in a T-shape.

4. The starch tube bundle waste heat emission washing device as described in claim 1, characterized in that: The nozzle (4) has a flat outlet end and a rocker plate (42) is provided below the outlet end of the nozzle (4).

5. The starch tube bundle waste heat emission washing device as described in claim 1, characterized in that: The nozzle (4) is fixed in the buffer tank (3) by the outer fixing sleeve (41), and the tail ends of multiple nozzles (4) are connected to the connecting pipe (5).

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