Energy-saving flue gas desulfurization tower

Abstract

The utility model relates to the technical field of desulfurization towers, in particular to an energy-saving flue gas desulfurization tower which comprises a tower body, the right end of the tower body is communicated with a gas inlet pipe, the bottom end of the tower body is provided with a power motor and a collecting barrel, the lower end of the collecting barrel is communicated with a liquid discharge pipe, and the upper end of the power motor is in power connection with a power rod. A fixed cover is fixedly arranged in the tower body, a filler layer is arranged at the lower end part of the fixed cover, a spraying layer is arranged in the tower body, a spraying pipe which extends outwards and penetrates through the tower body is connected to the spraying layer, and an air outlet pipe is fixedly arranged at the upper end of the tower body in a communicating manner; the protective sleeve is arranged on the periphery of the gas inlet pipe, the heat absorption pipe is arranged between the protective sleeve and the gas inlet pipe, waste gas heat entering the tower body through the gas inlet pipe is absorbed through the heat absorption pipe, the waste gas temperature in the tower body is reduced, the situation that the follow-up desulfurization effect is affected due to the too high waste gas temperature is prevented, part of waste heat of waste gas is recycled, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization towers, in particular to an energy-saving flue gas desulfurization tower. Background Art

[0002] A desulfurization tower is a type of device used to desulfurize flue gas. Due to its advantages of small load fluctuation impact and large flue gas treatment capacity, it is widely used in various industrial production and processing processes. At present, most flue gas emission desulfurization towers are mainly composed of a tower body, a smoke inlet, a smoke exhaust port, a spray system and a demister. Some flue gas emission desulfurization towers are also equipped with a filler layer and other structures. During use, the flue gas enters the tower body through the smoke inlet. Under the action of pressure, the flue gas moves from bottom to top to the upper part of the tower body. At the same time, the spray system sprays the corresponding purification liquid, and the sulfur dioxide and dust contained in the flue gas are adsorbed and purified by the contact between the flue gas and the liquid droplets. The purified flue gas is discharged from the smoke exhaust port, and the liquid droplets are stored at the bottom of the desulfurization tower under the action of gravity.

[0003] During the use of most existing flue gas desulfurization towers, the flue gas discharged from the exhaust port still contains a small amount of sulfur dioxide. When the flue gas with a high temperature and a small amount of sulfur dioxide is directly discharged into the environment, it will cause a certain degree of pollution to the environment and a certain degree of waste of resources, making the energy saving and environmental protection of the flue gas desulfurization tower poor during use. Utility Model Content

[0004] The purpose of the utility model is to provide an energy-saving flue gas desulfurization tower to overcome the above-mentioned defects in the prior art.

[0005] According to the utility model, an energy-saving flue gas desulfurization tower includes a tower body, the right end of the tower body is connected to an air inlet pipe, a protective sleeve is provided on the outer periphery of the air inlet pipe, the protective sleeve is formed by hingedly connecting two semicircular sleeves, a heat absorption pipe is provided between the protective sleeve and the air inlet pipe, both ends of the heat absorption pipe extend backward to pass through the protective sleeve, the two semicircular splicing ends of the protective sleeve are located at the heat absorption pipe, the two ends of the heat absorption pipe are respectively connected to the cold zone liquid tank and the heat recovery tank, a temperature detector is provided on the right end part of the tower body, the temperature detector is electrically connected to the control end of the outer end, a power motor and a collection bucket are provided at the bottom end of the tower body, a drain pipe is provided at the lower end of the collection bucket, a protective sleeve is provided on the outer periphery of the power motor, and the power motor The upper end of the power rod is connected to the power rod, and the outer periphery of the power rod is fixed with stirring rods that are staggered up and down and evenly distributed circumferentially. A stabilizing frame is fixed in the tower body, and the stabilizing frame rotatably cooperates with the outer periphery of the middle end of the power rod. A fixing cover is fixed in the tower body, and the power rod extends upward and is rotatably connected to the lower end part of the fixing cover. The upper end part of the power rod is fixed with a driving wheel, and the fixing cover is rotatably connected to a driven wheel evenly distributed in the circumference, and the driving wheel is meshed with the driven wheel, and the driven wheel is connected to a fan blade through a fixing rod, and a packing layer is provided at the lower end of the fixing cover, and a spray layer is provided in the tower body, and the spray layer is connected to a spray pipe extending outward and passing through the tower body, and the upper end of the tower body is connected and fixed with an air outlet pipe.

[0006] The beneficial effects of the utility model are:

[0007] The temperature of the exhaust gas discharged from the air inlet pipe is detected by a temperature detector, so as to control the flow rate at the heat absorption pipe. Then, the liquid flow at the heat absorption pipe absorbs the heat of the exhaust gas entering the tower body through the air inlet pipe, thereby reducing the exhaust gas temperature in the tower body, preventing the exhaust gas temperature from being too high and affecting the subsequent desulfurization effect, and partially recovering the waste heat of the exhaust gas to improve energy utilization.

[0008] The rotation of the power rod drives the stirring rod to rotate synchronously, and the stirring rod stirs the exhaust gas, causing the exhaust gas to flow upward under the action of air pressure, thereby increasing the residence time of the exhaust gas in the packing layer. Through the engagement of the driving wheel and the driven wheel, the fan blades are synchronously driven to rotate during the rotation of the power rod, thereby driving the exhaust gas to rush up and down, causing the exhaust gas to diffuse to the circumference, which can increase the contact area between the exhaust gas and the inner and outer layers of the packing layer, thereby improving the contact effect between the exhaust gas and the spray liquid, and improving the desulfurization effect of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the appearance of the utility model;

[0010] Figure 2 This utility model Figure 1 Schematic diagram of the top view structure;

[0011] Figure 3 This utility model Figure 1 A schematic diagram of the front structure of FIG.

[0012] Figure 4 This utility model Figure 2 Schematic cross-sectional view of AA in the figure;

[0013] Figure 5 This utility model Figure 3 Schematic cross-sectional view of the middle BB;

[0014] Figure 6 This utility model Figure 4 A partial enlarged schematic diagram of the middle trachea;

[0015] In the picture:

[0016] 10. Tower body; 11. Air inlet pipe; 12. Air outlet pipe; 13. Spray pipe; 14. Drain pipe; 15. Heat absorption pipe; 16. Temperature detector; 17. Power motor; 18. Collection bucket; 19. Power rod; 20. Stirring rod; 21. Stabilizing frame; 22. Fixed cover; 23. Driving wheel; 24. Driven wheel; 25. Fan blade; 26. Filling layer; 27. Spray layer; 28. Protective cover. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0018] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element at the same time:

[0019] Example 1:

[0020] Reference Figures 1-6According to an embodiment of the present invention, an energy-saving flue gas desulfurization tower includes a tower body 10. The right end of the tower body 10 is connected to an air inlet pipe 11. A protective sleeve 28 is provided on the outer periphery of the air inlet pipe 11. The protective sleeve 28 is formed by hingedly connecting two semicircular sleeves. A heat absorption pipe 15 is provided between the protective sleeve 28 and the air inlet pipe 11. Both ends of the heat absorption pipe 15 extend backward to penetrate the protective sleeve 28. The two semicircular splicing ends of the protective sleeve 28 are located at the heat absorption pipe 15. The two ends of the heat absorption pipe 15 are respectively connected to the cold zone liquid tank and the heat recovery tank. A temperature detector 16 is provided at the right end of the tower body 10. The temperature detector 16 is electrically connected to the control end at the outer end. A power motor 17 and a collecting bucket 18 are provided at the bottom end of the tower body 10. The lower end of the collecting bucket 18 is connected to a drain pipe 14. A protective sleeve is provided on the outer periphery of the power motor 17. The upper end power is connected to a power rod 19, and the outer periphery of the power rod 19 is fixed with stirring rods 20 which are staggered and evenly distributed in the circumferential direction. A stabilizing frame 21 is fixed in the tower body 10, and the stabilizing frame 21 rotates with the outer periphery of the middle end of the power rod 19. A fixed cover 22 is fixed in the tower body 10, and the power rod 19 extends upward and is rotatably connected to the lower end portion of the fixed cover 22. The upper end portion of the power rod 19 is fixed with a driving wheel 23, and the fixed cover 22 is rotatably connected to a driven wheel 24 evenly distributed in the circumference. The driving wheel 23 meshes with the driven wheel 24, and the driven wheel 24 is connected with a fan blade 25 through a fixed rod. The lower end portion of the fixed cover 22 is provided with a packing layer 26, and a spray layer 27 is provided in the tower body 10. The spray layer 27 is connected with a spray pipe 13 extending outward and passing through the tower body 10. The upper end of the tower body 10 is connected and fixed with an outlet pipe 12.

[0021] The heat absorbing tube 15 is wound around the outer periphery of the air inlet pipe 11 so that the heat absorbing tube 15 Figure 6 The spiral abutment is set on the outer periphery of the air inlet pipe 11, and a protective sleeve 28 is set on the outer periphery of the air inlet pipe 11. The protective sleeve 28 is divided into two semicircular sleeves hingedly set at the front and rear ends. The rear ends of the protective sleeve 28 abut each other and clamp the upper and lower abutting surfaces of the heat absorption pipe 15. A threaded fixing piece is set on the abutting part of the protective sleeve 28 for installation, so that the abutting part of the protective sleeve 28 is fixedly connected. The heat absorption pipe 15 is set between the air inlet pipe 11 and the protective sleeve 28. Both ends of the heat absorption pipe 15 are connected to the cold zone liquid tank and the heat recovery tank. A liquid pump is provided at the cooling liquid tank. The liquid pump works The coolant at the coolant tank is drawn into the heat absorption pipe 15. The coolant flows around the outer periphery of the air inlet pipe 11 along the spiral arrangement of the heat absorption pipe 15. The air inlet pipe 11 is connected to the exhaust pipe. The exhaust gas is sent to the air inlet pipe 11 through the exhaust pipe by the exhaust equipment. The air inlet pipe 11 contacts the exhaust gas. The exhaust gas enters the tower body 10 through the left end opening of the air inlet pipe 11. The heat at the air inlet pipe 11 is absorbed by the heat absorption pipe 15 and the air inlet pipe 11. The coolant flows outward along the heat absorption pipe 15 into the heat recovery box, and energy is recovered in the heat recovery box.

[0022] The temperature detector 16 detects the temperature of the exhaust gas discharged into the tower body 10 through the air inlet pipe 11, and the flow rate at the heat absorption pipe 15 is adjusted according to the temperature value detected by the temperature detector 16. When the detection value of the temperature detector 16 is too high, the flow rate at the heat absorption pipe 15 is increased, and vice versa.

[0023] The spray layer 27 is arranged in a disc shape as a whole. The spray layer 27 is provided with annular flow pipes arranged in inner and outer circles. The lower end of each flow pipe is provided with evenly distributed spray heads. The annular flow pipes arranged in the inner and outer circles are connected by connecting pipes. The flow pipes are connected to the spray pipe 13. There is a gap at the spray layer 27. The spray pipe 13 is connected to a spray liquid cylinder. The spray liquid enters the spray layer 27 through the spray pipe 13. The liquid flows to the annular flow pipes arranged in the inner and outer circles respectively. The spray liquid is sprayed downward through the spray port at the lower end of the flow pipe, so that the spray liquid contacts the exhaust gas at the lower end, absorbs the sulfur-containing exhaust gas in the exhaust gas, converts it into sulfide, and drips downward. The spray liquid containing sulfide drips to the packing layer 26, and after secondary absorption with the exhaust gas at the packing layer 26, drips downward to the collection barrel 18, and is discharged outward through the drain pipe 14. The treatment work is carried out by the treatment at the outer end;

[0024] The power motor 17 is powered on and drives the power rod 19 connected to the upper end to rotate. Under the rotation of the power rod 19, the stirring rod 20 is driven to rotate, so that the exhaust gas entering the tower body 10 is fully diffused, and the exhaust gas flows upward under the action of air pressure. During the rotation of the power rod 19, the driving wheel 23 fixed to the upper end of the power rod 19 is driven to rotate synchronously, so that the driven wheel 24 meshing with the driving wheel 23 rotates circumferentially, and then drives the lower end part of the fan blade 25 to rotate through the fixed rod. The rotation of the fan blade 25 causes the exhaust gas to be concentrated at the packing layer 26, and under the action of air pressure, the exhaust gas contacts the outer and inner multi-layered packing layer 26, and contacts the spray liquid on the packing layer 26 to absorb the sulfur-containing exhaust gas carried in the exhaust gas;

[0025] The exhaust gas flows from bottom to top and is discharged to the outside through the exhaust pipe 12.

[0026] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All such modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims appended hereto.

Claims

1. An energy-saving flue gas desulfurization tower, comprising a tower body (10), wherein the right end of the tower body (10) is connected to an air inlet pipe (11), the bottom end of the tower body (10) is provided with a power motor (17) and a collection bucket (18), and the lower end of the collection bucket (18) is connected to a drain pipe (14), characterized in that: The upper end of the power motor (17) is connected to a power rod (19), and stirring rods (20) are fixedly provided on the outer periphery of the power rod (19) and are staggered and evenly distributed in the circumferential direction. A fixed cover (22) is fixedly provided in the tower body (10), and a packing layer (26) is provided at the lower end of the fixed cover (22). A spray layer (27) is provided in the tower body (10), and a spray pipe (13) extending outward and penetrating the tower body (10) is connected to the spray layer (27). The upper end of the tower body (10) is connected to an air outlet pipe (12).

2. The energy-saving flue gas desulfurization tower according to claim 1, characterized in that: A protective sleeve (28) is provided on the outer periphery of the air inlet pipe (11), and the protective sleeve (28) is formed by hingedly connecting two semicircular sleeves. A heat absorption pipe (15) is provided between the protective sleeve (28) and the air inlet pipe (11), and both ends of the heat absorption pipe (15) extend backward and penetrate the protective sleeve (28). The two semicircular spliced ends of the protective sleeve (28) are located at the heat absorption pipe (15), and the two ends of the heat absorption pipe (15) are respectively connected to the cold zone liquid tank and the heat recovery tank.

3. An energy-saving flue gas desulfurization tower according to claim 2, characterized in that: A driving wheel (23) is fixedly provided at the upper end of the power rod (19); driven wheels (24) evenly distributed in the circumferential direction are rotatably connected to the fixed cover (22); the driving wheel (23) is meshed with the driven wheel (24); and the driven wheel (24) is connected to a fan blade (25) via a fixed rod.

4. The energy-saving flue gas desulfurization tower according to claim 3, characterized in that: A stabilizing frame (21) is fixedly provided in the tower body (10), and the stabilizing frame (21) is rotatably matched with the outer periphery of the middle end of the power rod (19). The power rod (19) extends upward and is rotatably connected to the lower end portion of the fixed cover (22).

5. The energy-saving flue gas desulfurization tower according to claim 4, characterized in that: A temperature detector (16) is provided at the right end of the tower body (10), and the temperature detector (16) is electrically connected to the control end at the outer end.

6. The energy-saving flue gas desulfurization tower according to claim 5, characterized in that: A protective sleeve is provided on the outer periphery of the power motor (17).

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