A horizontal desulfurization square tower

Abstract

This invention provides a horizontal desulfurization square tower, belonging to the field of flue gas desulfurization technology. The desulfurization square tower includes: a treatment chamber, which is a flat, square shell formed by plates; multiple layers of inclined baffles are arranged within the treatment chamber, dividing it into multiple treatment chambers; flue gas enters from the flue gas inlet located at the bottom of the treatment chamber; then flows upwards and contacts the desulfurization slurry sprayed from the nozzles for heat and mass transfer, and then passes through the inclined baffles into the upper treatment chamber, where it again undergoes heat and mass transfer with the desulfurization slurry sprayed from the upper nozzles; this process is repeated multiple times to achieve efficient desulfurization and dust removal; the cleaned flue gas is discharged from the exhaust port at the top. The desulfurization square tower provided by this invention has high desulfurization efficiency, good stability, low power consumption, low construction cost, and short construction period.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas desulfurization technology, specifically relating to a horizontal desulfurization square tower. Background Technology

[0002] As national environmental protection policies deepen and higher requirements are placed on flue gas emissions, various industries are gradually raising their sulfur dioxide emissions to ultra-low emission standards. Currently, wet desulfurization is the main desulfurization process, implemented using a vertical circular tower, commonly known as a desulfurization tower. However, the commonly used desulfurization towers suffer from low desulfurization efficiency, poor stability, high power consumption, high construction costs, and long construction periods. To meet ultra-low emission standards and improve desulfurization efficiency, it is necessary to further increase the spray layer and the height of the desulfurization tower, further increasing manufacturing costs, power consumption, construction and maintenance difficulties, and safety hazards. Summary of the Invention

[0003] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a horizontal desulfurization square tower. Using this desulfurization square tower can improve the heat and mass transfer efficiency between flue gas and desulfurization slurry, thereby solving the problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A horizontal desulfurization square tower, comprising:

[0006] The processing chamber is a flat, square shell formed by enclosing plates; a multi-layered, inclined partition structure is provided inside the processing chamber, which divides the processing chamber into multiple layers;

[0007] The flue gas inlet and flue gas outlet are respectively located at the bottom and top of the treatment chamber, and are used for flue gas to enter and exit the treatment chamber, respectively.

[0008] A slurry supply mechanism is used to provide desulfurization slurry. The slurry supply mechanism includes a slurry inlet, a slurry outlet, and a slurry pipeline. The slurry inlet is arranged on the side of the square tower, and the slurry outlet is arranged at the bottom of the square tower. One end of the slurry pipeline is connected to the slurry inlet, and the other end is divided into multiple branch pipelines. The branch pipelines extend inward through the side wall of each treatment chamber.

[0009] The device includes a slurry injection system comprising multiple nozzle structures connected to the branch pipes for injecting desulfurization slurry into each treatment chamber.

[0010] Furthermore, in the horizontal desulfurization tower described above, the partition structure is configured with 2 to 6 layers.

[0011] Furthermore, in the horizontal desulfurization tower described above, the partition structure is inclined in one direction along the length and in two directions along the width, forming a regular V-shape or an inverted V-shape, with adjacent layers of the regular V-shape and inverted V-shape partition structures alternately arranged.

[0012] Furthermore, in the horizontal desulfurization tower described above, when the partition structure forms a regular V-shape in the width direction, i.e., high in the middle and low at both ends, the two low ends of the partition structure are provided with drain ports; when the partition structure forms an inverted V-shape in the width direction, i.e., low in the middle and high at both ends, the middle of the partition structure is provided with a drain port, and its two high ends are in contact with the side wall of the treatment chamber.

[0013] Furthermore, in the horizontal desulfurization tower described above, the baffle structure forms one or more sets of positive and negative V-shapes in the width direction.

[0014] Furthermore, in the horizontal desulfurization tower described above, the inclination angle of the partition structure in the length direction is 0 to 3 degrees; and the inclination angle in the width direction is 0.1 to 3 degrees.

[0015] Furthermore, in the horizontal desulfurization tower described above, a rotating baffle is provided at the lower end of the partition structure, and the rotating baffle can rotate around the lower edge of the partition structure by the required angle.

[0016] Furthermore, in the horizontal desulfurization tower described above, the partition structure is a sieve plate, and the sieve plate has multiple sieve plate holes, the shape of which is regular or irregular.

[0017] Furthermore, in the horizontal desulfurization tower described above, the baffle structure is a solid valve tower plate, a floating valve tower plate, a spray-type tower plate, or a composite tower plate.

[0018] Furthermore, in the horizontal desulfurization tower described above, each treatment chamber is equipped with multiple horizontally arranged branch pipes, and each branch pipe is uniformly connected with multiple upward-facing nozzle structures.

[0019] Compared with the prior art, the horizontal desulfurization tower provided by this utility model has the following beneficial effects:

[0020] The desulfurization tower's treatment chamber is divided into multiple layers by a partition structure. Flue gas enters from the flue gas inlet located at the bottom of the treatment chamber, flows upward, and comes into contact with the desulfurization slurry sprayed from the nozzles for heat and mass transfer. It then passes through the inclined partitions into the upper treatment chamber, where it undergoes heat and mass transfer again with the desulfurization slurry sprayed from the upper nozzles. This process is repeated multiple times to achieve efficient desulfurization and dust removal. The cleaned flue gas, after multiple treatments, is discharged from the exhaust port at the top.

[0021] The multi-layered treatment chamber arrangement allows for repeated heat and mass transfer between the flue gas and the slurry, achieving highly efficient desulfurization and dust removal. Simultaneously, the baffles even out the flow of the flue gas and force mix the flue gas and desulfurization slurry, ensuring efficient heat and mass transfer between the gas, solid, and liquid phases, thus improving desulfurization and dust removal efficiency. The alternating arrangement of the positive and negative V-shaped baffle structures allows the upper desulfurization slurry to flow downwards in a zigzag pattern, improving the utilization rate of the desulfurization slurry and further enhancing desulfurization and dust removal efficiency. By adjusting the angle of the rotating baffle at the lower end of the baffle, the thickness of the liquid layer on the upper surface of the baffle can be adjusted, allowing for flexible adjustment of the desulfurization efficiency according to operating conditions. Due to its flexibility and high efficiency, this device is suitable for treating various types of industrial flue gas. Attached Figure Description

[0022] Figure 1 This is a front view of the structure of a horizontal desulfurization square tower provided in an embodiment of this utility model;

[0023] Figure 2 for Figure 1 Top view of the desulfurization tower structure;

[0024] Figure 3 for Figure 1 Left view of the structure of the desulfurization tower;

[0025] In the diagram: 1-treatment chamber; 2-flue gas inlet; 3-inverted V-shaped baffle structure; 4-positive V-shaped baffle structure; 5-rotatable baffle; 6-nozzle structure; 7-flue gas outlet; 8-slurry inlet; 9-slurry outlet; 10-slurry pipeline. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] Figure 1This diagram illustrates the structure of a horizontal desulfurization square tower according to an embodiment of the present invention. The desulfurization square tower includes: a treatment chamber 1, a flue gas inlet 2, a flue gas outlet 7, a slurry supply mechanism, and a slurry injection device. The treatment chamber 1 is a flat, square shell formed by plates. Multiple layers of inclined partitions are arranged within the treatment chamber 1, dividing it into multiple smaller treatment chambers. The flue gas inlet 2 and flue gas outlet 7 are respectively located at the bottom and top of the treatment chamber 1, for the entry and exit of flue gas. The slurry supply mechanism... The device provides desulfurization slurry to the treatment chambers. It includes a slurry inlet 8, a slurry outlet 9, and a slurry pipe 10. The slurry inlet 8 is located on the side of the desulfurization tower, and the slurry outlet 9 is located at the bottom of the desulfurization tower. One end of the slurry pipe 10 is connected to the slurry inlet 8, and the other end is divided into multiple branch pipes. The branch pipes extend horizontally inward through the side wall of each treatment chamber to the side wall near the opposite side wall. The slurry injection device includes multiple nozzle structures 6, which are connected to the branch pipes and are used to spray the desulfurization slurry upward into each treatment chamber.

[0029] This design utilizes fluid dynamics principles and the efficient heat and mass transfer principle of gas-liquid-solid three-phase system. Through baffle design, the desulfurization slurry is broken up into droplets of tens of micrometers through rebound, geometrically increasing the specific surface area of ​​the droplets. Simultaneously, it creates a turbulent space with gas-liquid rotation and tumbling through swirling coupling. The multi-layer baffle design effectively increases the contact time between flue gas and slurry. These design features significantly improve desulfurization efficiency. During the flue gas rise, sulfur dioxide is efficiently captured by the aforementioned device. The alkaline substances in the slurry react with sulfur dioxide to form sulfites, thereby removing sulfur dioxide. The technology in this embodiment can significantly improve the desulfurization efficiency and stability of the desulfurization tower, greatly reduce desulfurization power consumption, reduce construction costs, and shorten the construction cycle.

[0030] Preferably, the baffle structure is configured with 2 to 6 layers. The multi-layer baffle design increases the contact opportunities between the flue gas and the slurry during its ascent. After contacting the slurry at each layer, the flue gas continues to rise and comes into contact with the slurry at the layer above, repeating this process multiple times until the flue gas meets the purification standards. This multi-layer contact method significantly improves the efficiency and stability of desulfurization. In practical applications, the number of baffle layers can be flexibly adjusted according to the actual flue gas desulfurization requirements to achieve the best desulfurization effect.

[0031] Preferably, the baffle structure is inclined in one direction along its length. The inclined baffle guides the slurry to flow downwards along its length, preventing slurry accumulation in localized areas. The flowing slurry enhances the mixing intensity between the flue gas and the slurry, thereby improving desulfurization efficiency.

[0032] Preferably, the partition structure is inclined in two directions along its width, forming a regular V-shaped partition structure 4 or a reverse V-shaped partition structure 3. When the partition structure forms a regular V-shape in the width direction, i.e., high in the middle and low at both ends, the middle of the partition structure is continuous, and its two low ends are provided with drainage ports. When the partition structure forms a reverse V-shape in the width direction, i.e., low in the middle and high at both ends, the middle of the partition structure is provided with a drainage port, and its two high ends are in contact with the side wall of the treatment chamber. The regular or reverse V-shaped partition design can guide the slurry to flow from the high end to the low end along the width direction of the partition.

[0033] Preferably, the slurry is arranged in two adjacent alternating layers: the symmetrical slurry structure 4 and the inverted slurry structure 3. This alternation guides the slurry from the middle drain port of the upper inverted slurry to the middle of the lower symmetrical slurry; then it flows along the width of the lower symmetrical slurry to the drain ports at both ends; from the drain ports at both ends of the symmetrical slurry to the ends of the next inverted slurry, and then back to the middle drain port of the inverted slurry; this process repeats, creating a zigzag flow path for the slurry. This design extends the slurry's flow path, significantly prolonging the contact time between the flue gas and the slurry, and improving the slurry's utilization rate. In practical applications, the specific tilt angle and position of each layer of baffles can be adjusted to accommodate different types of flue gas and slurry, thereby improving the desulfurization effect.

[0034] Preferably, the herringbone and inverted herringbone partition structures can consist of one or more sets. The combination of multiple sets of partitions can be flexibly adjusted according to specific needs.

[0035] Preferably, the diaphragm structure has an inclination angle of 0 to 3 degrees in the length direction and 0.1 to 3 degrees in the width direction. This small-angle inclination design ensures the fluidity of the slurry without increasing the overall construction height.

[0036] Preferably, a rotating baffle is provided at the lower end of the baffle structure. During the flue gas rise, a large number of bubbles are generated on the baffle surface due to the mixing of slurry and flue gas. These bubbles converge to form a bubble bed of a certain height. The bubble bed can increase the heat and mass transfer efficiency between the slurry and flue gas, but an excessively high bubble bed will increase resistance, so the height of the bubble bed needs to be controlled. The rotating baffle is designed to control the height of the bubble bed. When the height of the bubble bed on the baffle structure exceeds the height of the rotating baffle, the slurry will flow out from the upper edge of the rotating baffle and flow to the next layer of baffle, so that the height of the bubble bed is always controlled within the set height. By changing the rotation angle of the rotating baffle, the height of the rotating baffle can be adjusted, thereby achieving flexible control of the bubble bed height.

[0037] Preferably, the baffle structure is a sieve plate with various hole shapes, including but not limited to circular, square, rectangular, rhomboid, elliptical, serrated, hexagonal, polygonal, irregular, and other irregularly shaped holes. The design of the sieve plate can effectively balance the uniform distribution of flue gas, making the flow field inside the tower relatively balanced. At the same time, the sieve plate can form a turbulent space for gas-liquid rotation and tumbling by swirling coupling, which greatly improves the heat and mass transfer capacity of the gas-liquid-solid three phases and improves the desulfurization efficiency.

[0038] Preferably, the partition structure can also be a solid valve tray, a floating valve tray, a spray-type tray, or a composite tray.

[0039] Preferably, each processing chamber is equipped with multiple horizontally arranged branch pipes, each branch pipe being uniformly connected to multiple upward-facing nozzle structures. The number of nozzle structures can be adjusted according to actual needs. This nozzle layout ensures uniform distribution of the slurry within the tower, avoiding localized areas of excessive or insufficient slurry. In other embodiments, the nozzle layout and spray angle can also be optimized.

[0040] Preferably, the partition structure and the processing chamber are fixed together by welding or bolting.

[0041] The desulfurization tower provided by this utility model works as follows: Flue gas enters from the flue gas inlet located at the bottom of the treatment chamber, then flows upward and comes into contact with the desulfurization slurry sprayed from the nozzle for heat and mass transfer. The flue gas carrying a certain amount of liquid droplets enters the baffle and forms a swirling coupling with the liquid layer on the upper surface of the baffle, generating a turbulent space where gas and liquid rotate and churn for efficient heat and mass transfer, forming a cycle. Then, it enters the upper treatment chamber through the inclined baffle for the next cycle. This cycle is repeated many times to achieve efficient desulfurization and dust removal. The clean flue gas after multiple treatments is discharged from the exhaust port at the top.

[0042] The desulfurization tower provided by this invention, through the arrangement of multiple treatment chambers, allows flue gas to repeatedly undergo heat and mass transfer with the slurry, thereby achieving highly efficient desulfurization and dust removal. Simultaneously, the baffles play a role in equalizing flow, forcing mixing, and swirling coupling of the flue gas, further improving desulfurization and dust removal efficiency. The alternating arrangement of positive and negative V-shaped baffle structures allows the upper desulfurization slurry to flow downwards in a zigzag pattern, improving the utilization rate of the desulfurization slurry and further enhancing desulfurization and dust removal efficiency. The entire process fully utilizes the interaction between flue gas and slurry, improving desulfurization efficiency, reducing energy consumption, and achieving the dual goals of environmental protection and economic benefits. Due to its flexibility and high efficiency, this device is suitable for the treatment of various industrial flue gas types.

[0043] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A horizontal desulfurization square tower, characterized in that, include: The processing chamber is a flat, square shell formed by enclosing plates; The processing chamber is provided with a multi-layered inclined partition structure, which divides the processing chamber into multiple processing chambers. The flue gas inlet and flue gas outlet are respectively located at the bottom and top of the treatment chamber, and are used for flue gas to enter and exit the treatment chamber, respectively. A slurry supply mechanism is used to provide desulfurization slurry. The slurry supply mechanism includes a slurry inlet, a slurry outlet, and a slurry pipeline. The slurry inlet is arranged on the side of the square tower, and the slurry outlet is arranged at the bottom of the square tower. One end of the slurry pipeline is connected to the slurry inlet, and the other end is divided into multiple branch pipelines. The branch pipelines penetrate the side wall of each treatment chamber and extend inward to the opposite side wall. The device includes a slurry injection system comprising multiple nozzle structures connected to the branch pipes for injecting desulfurization slurry into each treatment chamber.

2. The horizontal desulfurization square tower according to claim 1, characterized in that, The partition structure is configured with 2 to 6 layers.

3. The horizontal desulfurization square tower according to claim 2, characterized in that, The partition structure is inclined in one direction along the length and in two directions along the width, forming a regular V-shape or an inverted V-shape. The regular V-shape and the inverted V-shape partition structures are alternately arranged in two adjacent layers.

4. The horizontal desulfurization square tower according to claim 3, characterized in that, When the partition structure forms a regular V-shape in the width direction, that is, the middle is high and the two ends are low, the two low ends of the partition structure are provided with drain ports; when the partition structure forms an inverted V-shape in the width direction, that is, the middle is low and the two ends are high, the middle of the partition structure is provided with a drain port, and its two high ends are in contact with the side wall of the treatment chamber.

5. The horizontal desulfurization tower according to claim 4, characterized in that, The partition structure forms one or more sets of positive and negative V-shapes in the width direction.

6. A horizontal desulphurization square tower according to any one of claims 3-5, characterized in that, The partition structure has an inclination angle of 0 to 3 degrees in the length direction and an inclination angle of 0.1 to 3 degrees in the width direction.

7. The horizontal desulfurization square tower according to claim 6, characterized in that, The lower end of the partition structure is provided with a rotating baffle, which can rotate around the lower edge of the partition structure by a required angle.

8. The horizontal desulfurization square tower according to claim 2, characterized in that, The partition structure is a sieve plate, and the sieve plate has multiple sieve plate holes, the shape of which can be regular or irregular.

9. The horizontal desulfurization square tower according to claim 2, characterized in that, The partition structure is a solid valve tray, a floating valve tray, a spray-type tray, or a composite tray.

10. The horizontal desulfurization square tower according to claim 8 or 9, characterized in that, Each processing room is equipped with multiple horizontally arranged branch pipes, and each branch pipe is evenly connected with multiple upward-facing nozzle structures.

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