A desulfurization absorption machine with waste heat recovery and lye concentration functions

Abstract

The application relates to a desulfurization absorption machine with waste heat recovery and lye concentration functions, and belongs to the field of desulfurization equipment. The desulfurization absorption machine comprises a tower body, a filler layer and a spraying assembly, the filler layer and the spraying assembly are arranged in the tower body, and an inlet smoke pipe is communicated with the tower body; the spraying assembly comprises a spraying main pipe and a plurality of connecting rings, each connecting ring is rotationally connected to the spraying main pipe, each connecting ring is communicated with one spraying pipe, and a plurality of spraying holes are arranged in the spraying main pipe and communicated with the corresponding position spraying pipes. According to the application, the connecting ring can be rotationally connected according to the spraying requirement, the inclination angle of the spraying pipe is adjusted, the spraying assembly can adapt to different spraying requirements, and the application range of the desulfurization absorption machine is improved.

Description

Technical Field

[0001] This application relates to the field of desulfurization equipment, and in particular to a desulfurization absorber with waste heat recovery and alkali concentration functions. Background Technology

[0002] Currently, wet desulfurization is the mainstream technology for industrial flue gas desulfurization, which uses alkaline absorbents to react with silica in flue gas to generate nitrite.

[0003] The current desulfurization equipment is mainly a desulfurization tower. The desulfurization tower is equipped with a packing layer and a spray layer. After passing through the packing layer, the flue gas moves to the spray layer. The spray layer mainly includes a conveying main pipe and several spray pipes. Each spray pipe is connected to the conveying main pipe, and each spray pipe is welded to the conveying main pipe at an angle to desulfurize the flue gas.

[0004] Because the spray pipe is welded to the main conveying pipe, the angle of the spray pipe is fixed, which limits the spraying range of the spray pipe. As a result, the overall applicability of the desulfurization absorber is relatively small, and therefore needs to be improved. Utility Model Content

[0005] To address the aforementioned issues, this application provides a desulfurization absorber with waste heat recovery and alkali concentration functions.

[0006] This application provides a desulfurization absorber with waste heat recovery and alkali concentration functions, which adopts the following technical solution: A desulfurization absorber with waste heat recovery and alkali concentration functions includes a tower body, a packing layer and a spray assembly. The packing layer and the spray assembly are both installed in the tower body, and the tower body is connected to a flue gas inlet pipe. The spray assembly includes a main spray pipe and several connecting rings. Each connecting ring is rotatably connected to the main spray pipe, and each connecting ring is connected to a spray pipe. The main spray pipe has several spray holes that are connected to the corresponding spray pipes.

[0007] By adopting the above technical solution, when flue gas needs desulfurization, workers first rotate the connecting ring according to the spraying requirements. The connecting ring drives the corresponding spray pipe to rotate, so that the angle of the spray pipe is adapted to the spraying requirements. At this time, the flue gas can enter the tower body from the inlet pipe, and then pass through the packing layer and spray components in sequence for desulfurization treatment. At this time, under the action of the connecting ring, it is easy to adjust the tilt angle of the spray pipe, so that the spray pipe can be adapted to different spraying requirements, thereby improving the overall applicability of the desulfurization absorber.

[0008] Preferably, each of the connecting rings is threaded with a locking rod, and each of the locking rods abuts against the main spray pipe.

[0009] By adopting the above technical solution, after the position of the connecting ring is adjusted, the worker rotates the locking rod so that the locking rod abuts against the main spray pipe, thus completing the fixing of the connecting ring and the spray pipe.

[0010] Preferably, the connecting ring is provided with a limiting block, and the spray main pipe is provided with a limiting plate that cooperates with the limiting block. When the limiting block and the limiting plate abut against each other, the spray pipe is in a closed state.

[0011] By adopting the above technical solution, when it is necessary to close the spray pipe, the worker rotates the connecting ring. The connecting ring drives the limiting block to move. After the limiting block abuts against the limiting plate, the worker rotates the locking rod to lock the connecting ring. At this time, the spray pipe is not connected to the corresponding spray hole, thus completing the closure of the spray pipe.

[0012] Preferably, the packing layer includes a packing body, and the tower body is provided with a grid plate, with the packing body disposed on the grid plate.

[0013] By adopting the above technical solution, the grating plate provides support for the packing body, making the packing body less likely to move during use.

[0014] Preferably, the tower body is provided with a partition plate, which isolates the tower body into a heat exchange chamber. The heat exchange chamber is provided with a heat exchange tube, which is connected to the flue gas inlet pipe. The tower body is provided with a first water inlet pipe and a first water outlet pipe that are connected to the heat exchange chamber.

[0015] By adopting the above technical solution, the first inlet pipe delivers cold water from the outside to the heat exchange chamber, while high-temperature flue gas enters the flue gas inlet pipe from the heat exchange tube. When the high-temperature flue gas flows through the heat exchange tube, the heat exchange tube transfers heat to the cold water in the heat exchange chamber to heat the cold water. The heated water is then discharged from the first outlet pipe, thus realizing the function of recovering and utilizing the heat from the flue gas.

[0016] Preferably, the heat exchange tube is arranged in a spiral shape.

[0017] By adopting the above technical solution, the spirally arranged heat exchange tubes increase the residence time of high-temperature flue gas in the heat exchange chamber, improve the heat exchange time between flue gas and water, and thus improve the heat exchange effect in the heat exchange chamber.

[0018] Preferably, a heat exchange jacket is provided on the outer side of the tower body, and a second water inlet pipe and a second water outlet pipe are connected to the heat exchange jacket.

[0019] By adopting the above technical solution, since flue gas desulfurization is an exothermic reaction, the heat generated during the desulfurization process is conducted to the heat exchange jacket. Simultaneously, the second water inlet pipe introduces cold water from the outside into the heat exchange jacket, thus achieving a second stage of heat exchange and improving the utilization rate of flue gas heat.

[0020] Preferably, the tower body is provided with a drain pipe, the end of the drain pipe away from the tower body is connected to a falling film evaporator, the end of the falling film evaporator away from the drain pipe is connected to a first water pump, the end of the first water pump away from the falling film evaporator is connected to a liquid storage tank, the liquid storage tank is provided with a second water pump, one end of the second water pump is connected to the liquid storage tank and the other end is connected to the spray main pipe.

[0021] By adopting the above technical solution, the alkaline solution reacting with the flue gas enters the falling film evaporator through the drain pipe for concentration, and the concentrated alkaline solution enters the storage tank. The second water pump transports the alkaline solution in the storage tank to the spray main pipe for recycling, thus achieving the function of alkaline solution concentration.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a connecting ring and adjusting its position, the tilt angle of the spray pipe can be adjusted, making the spray pipe adaptable to different spraying needs, thereby improving the applicability of the desulfurization absorber; 2. By setting up heat exchange tubes, the heat of the flue gas can be easily recovered and utilized, thus realizing the function of waste heat recovery. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Tower body; 11. Smoke inlet pipe; 12. Grating plate; 13. Baffle plate; 14. Heat exchange chamber; 141. Heat exchange tube; 15. First water inlet pipe; 16. First water outlet pipe; 17. Heat exchange jacket; 171. Second water inlet pipe; 172. Second water outlet pipe; 18. Drain pipe; 2. Packing body; 3. Spray assembly; 31. Spray main pipe; 311. Spray hole; 312. Limiting plate; 32. Connecting ring; 321. Spray pipe; 322. Limiting block; 33. Locking rod; 4. Falling film evaporator; 5. First water pump; 6. Liquid storage tank; 7. Second water pump. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0026] This application discloses a desulfurization absorber with waste heat recovery and alkali concentration functions. (Refer to...) Figure 1A desulfurization absorber with waste heat recovery and alkali concentration functions includes a tower body 1, a packing layer, and a spray assembly 3. Both the packing layer and the spray assembly 3 are disposed within the tower body 1, and an inlet pipe 11 connects to the tower body 1. A grid plate 12 is installed within the tower body 1, and the packing layer consists of a packing body 2, which is mounted on the grid plate 12. The grid plate 12 provides support for the packing body 2, preventing it from shifting during use.

[0027] Reference Figure 1 The packing body 2 is set as a structured ceramic packing to facilitate the passage of flue gas and the desulfurization reaction.

[0028] Reference Figure 1 and Figure 2 The spray assembly 3 includes a main spray pipe 31 and several connecting rings 32, each of which is rotatably connected to the main spray pipe 31. Each connecting ring 32 is connected to a spray pipe 321, and the main spray pipe 31 has several spray holes 311 that communicate with the corresponding spray pipes 321. The spray holes 311 are fan-shaped holes.

[0029] To facilitate the fixing of the connecting rings 32, each connecting ring 32 is threaded with a locking rod 33, and each locking rod 33 is tightly abutted against the spray main pipe 31.

[0030] When flue gas desulfurization is required, the worker first rotates the connecting ring 32 according to the spraying requirements. The connecting ring 32 drives the corresponding spray pipe 321 to rotate, so that the angle of the spray pipe 321 is adapted to the spraying requirements. After the position of the connecting ring 32 is adjusted, the worker rotates the locking rod 33, so that the locking rod 33 abuts against the spray main pipe 31, thus completing the fixation of the connecting ring 32 and the spray pipe 321.

[0031] At this point, the flue gas can enter the tower body 1 through the flue gas inlet pipe 11, and then pass through the packing layer and the spray assembly 3 in sequence for desulfurization treatment. At this time, under the action of the connecting ring 32, the tilt angle of the spray pipe 321 can be easily adjusted, so that the spray pipe 321 can be adapted to different spraying requirements, thereby improving the overall applicability of the desulfurization absorber.

[0032] Reference Figure 2 In order to facilitate the opening and closing of the spray pipe 321, a limit block 322 is fixed on the connecting ring 32, and a limit plate 312 that cooperates with the limit block 322 is fixed on the spray main pipe 31. When the limit block 322 abuts against the limit plate 312, the spray pipe 321 is in the closed state.

[0033] When it is necessary to close the spray pipe 321, the worker rotates the connecting ring 32. The connecting ring 32 drives the limiting block 322 to move. After the limiting block 322 abuts against the limiting plate 312, the worker rotates the locking rod 33 to lock the connecting ring 32. At this time, the spray pipe 321 is not connected to the corresponding spray hole 311, thus completing the closure of the spray pipe 321.

[0034] Reference Figure 1 The tower body 1 is provided with a partition 13, which isolates the tower body 1 into a heat exchange chamber 14. The heat exchange chamber 14 is provided with a heat exchange tube 141, and the heat exchange tube 141 is connected to the flue gas inlet pipe 11. The tower body 1 is provided with a first water inlet pipe 15 and a first water outlet pipe 16, which are connected to the heat exchange chamber 14.

[0035] A heat exchange jacket 17 is fitted on the outside of the tower body 1, and a second water inlet pipe 171 and a second water outlet pipe 172 are connected to the heat exchange jacket 17.

[0036] The first inlet pipe 15 delivers cold water from the outside to the heat exchange chamber 14, while high-temperature flue gas enters the flue gas inlet pipe 11 through the heat exchange tube 141. When the high-temperature flue gas flows through the heat exchange tube 141, the heat exchange tube 141 transfers heat to the cold water in the heat exchange chamber 14 to heat the cold water. The heated water is then discharged from the first outlet pipe 16, thus realizing the function of recovering and utilizing the heat from the flue gas. Simultaneously, since flue gas desulfurization is an exothermic reaction, the heat generated during the desulfurization process is transferred to the heat exchange jacket 17. The second inlet pipe 171 introduces cold water from the outside into the heat exchange jacket 17, thus realizing the function of secondary heat exchange and improving the utilization rate of flue gas heat.

[0037] Reference Figure 1 The heat exchange tube 141 is arranged in a spiral shape. The spiral arrangement of the heat exchange tube 141 increases the residence time of high-temperature flue gas in the heat exchange chamber 14, and improves the heat exchange time between flue gas and water, thereby improving the heat exchange effect in the heat exchange chamber 14.

[0038] Reference Figure 1 To facilitate the recovery of alkali solution, a drain pipe 18 is provided on the tower body 1. The end of the drain pipe 18 away from the tower body 1 is connected to a falling film evaporator 4. The end of the falling film evaporator 4 away from the drain pipe 18 is connected to a first water pump 5. The end of the first water pump 5 away from the falling film evaporator 4 is connected to a storage tank 6. A second water pump 7 is provided on the storage tank 6. One end of the second water pump 7 is connected to the storage tank 6, and the other end is connected to the spray main pipe 31.

[0039] The alkaline solution, after reacting with the flue gas, enters the falling film evaporator 4 through the drain pipe 18 for concentration. The concentrated alkaline solution then enters the storage tank 6. The second water pump 7 transports the alkaline solution in the storage tank 6 to the spray main pipe 31 for recycling, while also achieving the function of alkaline solution concentration.

[0040] The implementation principle of a desulfurization absorber with waste heat recovery and alkali concentration functions in this application embodiment is as follows: High-temperature flue gas enters the tower body 1 after passing through heat exchange tube 141 and flue gas inlet pipe 11. During the process of flue gas passing through heat exchange tube 141, the first heat exchange function is achieved to recover the heat in the flue gas. The flue gas then passes through the packing layer and spray assembly 3 to achieve the desulfurization function. In addition, during the flue gas desulfurization process, the heat exchange jacket 17 achieves the second heat exchange function, further recovering the heat in the flue gas. The drain pipe 18 then discharges the used alkali solution, which passes through the falling film evaporator 4 and the storage tank 6 before re-entering the tower body 1 to spray the flue gas, thus realizing the functions of alkali concentration and recycling.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A desulfurization absorber with waste heat recovery and alkali concentration functions, characterized in that: It includes a tower body (1), a packing layer and a spray assembly (3), both of which are disposed in the tower body (1), and the tower body (1) is connected to a smoke inlet pipe (11); The spray assembly (3) includes a spray main pipe (31) and several connecting rings (32). Each connecting ring (32) is rotatably connected to the spray main pipe (31), and each connecting ring (32) is connected to a spray pipe (321). The spray main pipe (31) is provided with several spray holes (311) that are connected to the corresponding spray pipes (321).

2. The desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 1, characterized in that: Each of the connecting rings (32) is threaded with a locking rod (33), and each of the locking rods (33) is abutted against the spray main pipe (31).

3. The desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 2, characterized in that: The connecting ring (32) is provided with a limiting block (322), and the spray pipe (31) is provided with a limiting plate (312) that cooperates with the limiting block (322). When the limiting block (322) abuts against the limiting plate (312), the spray pipe (321) is in a closed state.

4. The desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 1, characterized in that: The packing layer includes a packing body (2), and the tower body (1) is provided with a grid plate (12), and the packing body (2) is disposed on the grid plate (12).

5. A desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 1, characterized in that: The tower body (1) is provided with a partition (13), which isolates the tower body (1) into a heat exchange chamber (14). The heat exchange chamber (14) is provided with a heat exchange tube (141), which is connected to the flue gas inlet pipe (11). The tower body (1) is provided with a first water inlet pipe (15) and a first water outlet pipe (16) connected to the heat exchange chamber (14).

6. A desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 5, characterized in that: The heat exchange tube (141) is arranged in a spiral shape.

7. A desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 5, characterized in that: The tower body (1) is fitted with a heat exchange jacket (17) on the outside, and the heat exchange jacket (17) is connected to a second water inlet pipe (171) and a second water outlet pipe (172).

8. A desulfurization absorber with waste heat recovery and alkali concentration functions according to claim 1, characterized in that: The tower body (1) is provided with a drain pipe (18). The end of the drain pipe (18) away from the tower body (1) is connected to a falling film evaporator (4). The end of the falling film evaporator (4) away from the drain pipe (18) is connected to a first water pump (5). The end of the first water pump (5) away from the falling film evaporator (4) is connected to a liquid storage tank (6). The liquid storage tank (6) is provided with a second water pump (7). One end of the second water pump (7) is connected to the liquid storage tank (6), and the other end is connected to the spray main pipe (31).

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