Circulating semi-dry desulfurization device and use method thereof

Abstract

The invention discloses a circulating semi-dry desulfurization device which comprises a desulfurization tank, the lower side of the desulfurization tank is fixedly connected with four supporting legs arranged in an annular array, the inner wall of the desulfurization tank is fixedly connected with a venturi gas inlet pipe, the inner wall of the desulfurization tank is fixedly connected with a desulfurization ash input pipe, and the desulfurization ash input pipe is fixedly connected with a gas inlet pipe. A discharging pipe of the desulfurization tank is fixedly connected with a desulfurized fly ash circulating pipe, the horizontal part of the upper side of the desulfurized fly ash circulating pipe is fixedly connected with the desulfurization tank, and a conveying pump is arranged on the outer side of the vertical part of the desulfurized fly ash circulating pipe. The invention relates to a circulating semi-dry desulfurization device, which has the functions of dynamically and uniformly distributing desulfurized fly ash and recycling, can release instantly generated fluid stress, can shake a gas distribution net to ensure the effectiveness of stripping, and also has the characteristic of recovering heat energy of treated flue gas. Therefore, the energy-saving and environment-friendly characteristics are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of desulfurization, and particularly relates to a circulating semi-dry desulfurization device and a using method thereof. Background Art

[0002] As is well known, the circulating semi-dry desulfurization device is a flue gas purification technology that combines the advantages of dry and wet methods, and has the characteristics of simple system, low investment, high desulfurization efficiency, etc. The circulating semi-dry desulfurization device mainly includes: an absorption tower, a circulation system, etc.

[0003] In the utility model patent with the patent authorization announcement number CN215311427U, a circulating fluidized bed semi-dry desulfurization device is disclosed, which includes a desulfurization tower and a dust collector, and also includes: a circulating ash return bin; the desulfurization tower includes: a desulfurization tower inlet section, a desulfurization tower Venturi tube, a desulfurization tower diffusion section, a desulfurization tower main reaction section and a desulfurization tower outlet section; the flue gas to be desulfurized enters the desulfurization tower through the desulfurization tower inlet section; the desulfurization tower outlet section is connected to the inlet of the dust collector, and the outlet of the dust collector is connected to the circulating ash return bin; the circulating ash return bin is a space formed by the cavity wrapped outside the desulfurization tower Venturi tube and the outside of the desulfurization tower diffusion section for returning the circulating ash to the desulfurization tower.

[0004] However, there are also certain deficiencies in the existing circulating semi-dry desulfurization device during use. First of all, the existing circulating semi-dry desulfurization device simply uses a feeding pipe to distribute the desulfurization ash in a fixed direction, which will cause problems of poor subsequent desulfurization effect. And although the existing gas distribution network is used for gas distribution of flue gas, etc., due to the adhesion problem of desulfurization reaction particles, it is not convenient for subsequent feeding and recycling of desulfurization ash, etc.

[0005] Secondly, after the existing circulating semi-dry desulfurization device desulfurizes the flue gas, most of the flue gas will be processed in the next process. Due to the flue gas carrying a certain amount of heat, simple output processing will cause waste of energy. Summary of the Invention

[0006] The purpose of the present invention is to provide a circulating semi-dry desulfurization device and a using method thereof to solve the above problems and those mentioned in the background art.

[0007] To solve the above problems, the present invention provides a technical solution:

[0008] A circulating semi-dry desulfurization device includes a desulfurization tank. Four support feet arranged in an annular array are fixedly connected to the lower side of the desulfurization tank. A Venturi inlet pipe is fixedly connected to the inner wall of the desulfurization tank. A desulfurization ash input pipe is fixedly connected to the inner wall of the desulfurization tank. A desulfurization ash circulation pipe is fixedly connected to the discharge pipe of the desulfurization tank. The upper horizontal part of the desulfurization ash circulation pipe is fixedly connected to the desulfurization tank. A delivery pump is arranged outside the vertical part of the desulfurization ash circulation pipe. A desulfurization mechanism is jointly arranged on the desulfurization ash circulation pipe and the desulfurization tank. A heat recovery mechanism is arranged on the left side of the desulfurization tank.

[0009] Preferably, the desulfurization mechanism includes a pressure relief pipe. The pressure relief pipe is fixedly connected to the vertical part of the desulfurization ash circulation pipe. A fixed piece is fixedly connected to the inner wall of the pressure relief pipe. A telescopic piece is fixedly connected to the inner wall of the fixed piece. A plug is fixedly connected to the left end of the telescopic piece. The plug is slidably connected to the desulfurization ash circulation pipe. A first spring is arranged outside the telescopic piece. One end of the first spring is welded to the fixed piece, and the other end of the first spring is fixedly connected to the plug. An auxiliary block is fixedly connected to the right end of the telescopic piece. The auxiliary block is slidably connected to the pressure relief pipe. Through the setting of the pressure relief pipe, the desulfurization ash flowing instantaneously can be guided, and under the combined use of the plug and the auxiliary block, the fluid stress can be released.

[0010] Preferably, a servo motor one is fixedly installed at the upper end of the desulfurization tank. The output shaft of the servo motor one is rotationally connected to the desulfurization tank. A rotating seat is fixedly connected to the output shaft of the servo motor one. A blanking groove is formed on the surface of the rotating seat. A blanking hole is formed on the surface of the rotating seat. The blanking hole communicates with the blanking groove. An annular groove is formed on the inner side wall of the desulfurization tank. A guide rod is fixedly connected to the inner wall of the rotating seat. A guide block is slidably sleeved outside the guide rod. The guide block is slidably connected to the rotating seat. A second spring is arranged outside the guide rod. One end of the second spring is welded to the guide block, and the other end of the second spring is welded to the rotating seat. A moving piece is fixedly connected to the upper end of the guide block. A limiting ball is fixedly connected to the end face of the moving piece. The limiting ball is slidably connected to the annular groove. Through the setting of structures such as the blanking groove and the blanking hole, the desulfurization ash can be discharged. Under the action of the servo motor one, the rotating seat can rotate to uniformly discharge the desulfurization ash. With the cooperation of the limiting ball and the annular groove, the rotation of the rotating seat can be guided to ensure the stable rotation of the rotating seat.

[0011] Preferably, a second servo motor is fixedly installed on the back of the desulfurization tank through a support ear. The output shaft of the second servo motor is rotatably connected to the desulfurization tank. A winding wheel is fixedly sleeved on the outer side of the output shaft of the second servo motor. A traction wire is arranged on the surface of the winding wheel. The lower end of the traction wire is fixedly connected to a gas distribution net. A moving ring is fixedly sleeved on the outer side of the gas distribution net. The moving ring is slidably connected to the desulfurization tank. A support piece is fixedly connected to the inner wall of the desulfurization tank. A third spring is welded to the upper end of the support piece. The other end of the third spring is welded to the gas distribution net. Through the combined use of the second servo motor, the winding wheel, the traction wire, and the third spring, the gas distribution net can be shaken to shake and discharge the desulfurization ash.

[0012] Preferably, a plurality of friction ring grooves are formed on the surface of the plug. The plurality of friction ring grooves are evenly distributed on the plug. Through the arrangement of the friction ring grooves, the friction effect on the surface of the plug can be improved.

[0013] Preferably, a plurality of friction grooves are formed on the surface of the auxiliary block. The plurality of friction grooves are arranged in a circular array on the auxiliary block. Through the arrangement of the friction grooves, the friction effect on the surface of the auxiliary block can be improved.

[0014] Preferably, the heat recovery mechanism includes a fixed ear. The fixed ear is fixedly connected to the left end of the desulfurization tank. A water storage tank is fixedly connected to the upper end of the fixed ear. An output pipe is fixedly connected to the inner wall of the desulfurization tank. The output pipe is fixedly connected to the water storage tank. A coil pipe is fixedly connected to the inner wall of the water storage tank. The coil pipe is fixedly connected to the output pipe. The circulation pipe of the coil pipe is fixedly connected to the fixed ear. An elastic piece is bonded to the circulation pipe of the coil pipe. An exciting piece is bonded to the left end of the elastic piece. A submersible motor is fixedly installed at the inner bottom of the water storage tank. The output shaft of the submersible motor is fixedly connected to a contact ball. The contact ball contacts the exciting piece. Through the combined use of the water storage tank and the coil pipe, the heat exchange between the flue gas and the water body can be carried out. Under the structures such as the submersible motor, the contact ball, and the elastic piece, the exciting piece can be shaken to agitate the water body to accelerate the heat exchange efficiency of the water body.

[0015] A method for using a circulating semi-dry desulfurization device specifically includes the following steps:

[0016] Step 1: Through the setting of the Venturi inlet pipe, flue gas can be input into the desulfurization tank. Under the action of the gas distribution network, the flue gas can be evenly distributed. Under the action of the desulfurization ash input pipe, dry desulfurization ash can be input into the feeding chute of the rotating seat. The output shaft is driven to rotate by the first servo motor to drive the rotating seat to rotate, so as to perform rotary cloth feeding on the desulfurization ash. Under the action of the material discharging holes, the desulfurization ash can be evenly distributed, and then the catalytic desulfurization reaction of the flue gas can be carried out. When the rotating seat rotates, the guide block can be driven to rotate, so as to drive the moving piece to rotate, and then drive the limiting ball to slide along the inner wall of the annular groove to guide the rotation of the rotating seat to ensure the stable rotation of the rotating seat. Under the deformation action of the second spring, the guide block can be pushed to drive the moving piece to move, so as to drive the limiting ball to always contact with the annular groove to ensure good rotational stability of the rotating seat;

[0017] Step 2: Through the action of the gas distribution network, and the aperture of the gas distribution network is larger than the particles of the desulfurization ash, the desulfurized ash after the desulfurization reaction can be discharged. The output shaft is driven to rotate forward by the second servo motor to drive the winding wheel to rotate, so as to wind the traction wire and drive the gas distribution network to move upward, and drive the moving ring to slide along the inner wall of the desulfurization tank. Under the action of the support piece, the third spring deforms. The output shaft is driven to rotate reversely by the second servo motor to drive the winding wheel to rotate, so as to lower the traction wire, make the third spring recover its deformation, and then pull the gas distribution network to move downward, causing the gas distribution network to vibrate and improving the discharging effect of the desulfurization ash;

[0018] Step 3: Through the suction action of the transfer pump and the conveying effect of the desulfurization ash circulation pipe, the desulfurization ash can be sucked and circulated to improve the operation efficiency. When the desulfurization ash instantaneously flows through the desulfurization ash circulation pipe, under the impact of the desulfurization ash, the plug can be pushed to move, so that the plug slides along the inner wall of the pressure relief pipe. With the cooperation of the friction ring groove, the friction effect of the plug can be improved. When the plug moves, the telescopic piece can be driven to slide along the inner wall of the fixed piece, causing the first spring to deform. When the telescopic piece moves, the auxiliary block can be driven to slide along the inner wall of the pressure relief pipe. With the cooperation of the friction groove, the friction effect on the surface of the auxiliary block can be improved, and then the fluid stress instantaneously flowing through the desulfurization ash circulation pipe can be released to avoid the problem of pipeline impact damage;

[0019] Step 4: Through the setting of the output pipe, the purified flue gas can be output and used. With the conveying function of the coil pipe, the flue gas can flow normally, and then the flue gas can exchange heat with the water body inside the water storage tank, utilize the waste heat of the flue gas, and improve the energy-saving and environmental protection characteristics. The output shaft is driven to rotate by a submersible motor to drive the contact ball to rotate, so that the contact ball squeezes the agitation piece to push the agitation piece to move, causing the elastic piece to deform. When the contact ball disengages from the agitation piece, the elastic piece resumes its deformation to drive the agitation piece to move back, and then the agitation piece shakes continuously to agitate the water body and accelerate the flow rate of the water body, improving the heat exchange efficiency.

[0020] The beneficial effects of the present invention are as follows: A circulating semi-dry desulfurization device can perform dynamic and uniform cloth feeding of desulfurization ash and can be recycled. It can also release the fluid stress generated instantaneously and perform shaking operations on the gas distribution network to ensure the effectiveness of material removal. It also has the characteristic of recovering the heat energy of the treated flue gas to improve energy-saving and environmental protection characteristics. In specific use, it has the following beneficial effects:

[0021] First, through the settings of the desulfurization mechanism, pressure relief pipe, fixed piece, telescopic piece, plug, friction ring groove, spring 1, auxiliary block, friction groove, servo motor 1, rotating seat, feeding groove, feeding hole, annular groove, guide rod, guide block, spring 2, moving piece, limiting ball, servo motor 2, winding wheel, traction wire, gas distribution network, moving ring, support piece, spring 3, etc. Through the setting of the pressure relief pipe, the desulfurization ash flowing instantaneously can be guided, and with the cooperation of the plug and the auxiliary block, the fluid stress can be released. Through the settings of the feeding groove, feeding hole and other structures, the desulfurization ash can be fed, and under the action of servo motor 1, the rotating seat can rotate to uniformly feed the desulfurization ash. With the cooperation of the limiting ball and the annular groove, the rotation of the rotating seat can be guided to ensure the stable rotation of the rotating seat. Through the cooperation of servo motor 2, winding wheel, traction wire and spring 3, the gas distribution network can be shaken to shake and feed the desulfurization ash.

[0022] Second, through the settings of the heat recovery mechanism, fixed ear, water storage tank, output pipe, coil pipe, elastic piece, agitation piece, submersible motor, contact ball, etc. Through the cooperation of the water storage tank and the coil pipe, the flue gas can exchange heat with the water body, and under the structures of the submersible motor, contact ball, elastic piece, etc., the agitation piece can shake to agitate the water body and accelerate the heat exchange efficiency of the water body. Description of the Drawings

[0023] For ease of explanation, the present invention is described in detail by the following specific embodiments and accompanying drawings.

[0024] Figure 1 Isometric view of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure of the desulfurization tank;

[0026] Figure 3 For the present invention Figure 2 Bottom view;

[0027] Figure 4 For the present invention Figure 2 Side view;

[0028] Figure 5 For the present invention Figure 2 Top view;

[0029] Figure 6 For the present invention Figure 1 Front elevation sectional view;

[0030] Figure 7 For the present invention Figure 2 Enlarged view of the pressure relief pipe;

[0031] Figure 8 For the present invention Figure 5 Enlarged view of the moving piece;

[0032] Figure 9 For the present invention Figure 6 Enlarged view of the local heat recovery mechanism.

[0033] In the figure: 1, desulfurization tank; 2, support feet; 3, Venturi inlet pipe; 4, desulfurization ash input pipe; 5, desulfurization ash circulation pipe; 6, delivery pump; 7, desulfurization mechanism; 8, heat recovery mechanism; 70, pressure relief pipe; 71, fixed piece; 72, telescopic piece; 73, plug; 74, friction ring groove; 75, spring one; 76, auxiliary block; 77, friction groove; 78, servo motor one; 79, rotating seat; 790, feeding chute; 791, feeding hole; 792, annular groove; 793, guide rod; 794, guide block; 795, spring two; 796, moving piece; 797, limiting ball; 798, servo motor two; 799, winding wheel; 700, traction wire; 701, air distribution net; 702, moving ring; 703, support piece; 704, spring three; 80, fixed ear; 81, water storage tank; 82, output pipe; 83, coil pipe; 84, elastic piece; 85, agitating piece; 86, submersible motor; 87, contact ball. Detailed implementation manners

[0034] As Figures 1-9 shown, the following technical solutions are adopted in this detailed implementation manner:

[0035] Example:

[0036] A circulating semi-dry desulfurization device, comprising a desulfurization tank 1, four support feet 2 arranged in a circular array are fixedly connected to the lower side of the desulfurization tank 1, a Venturi inlet pipe 3 is fixedly connected to the inner wall of the desulfurization tank 1, a desulfurization ash input pipe 4 is fixedly connected to the inner wall of the desulfurization tank 1, a desulfurization ash circulation pipe 5 is fixedly connected to the discharge pipe of the desulfurization tank 1, the upper horizontal part of the desulfurization ash circulation pipe 5 is fixedly connected to the desulfurization tank 1, a delivery pump 6 is arranged outside the vertical part of the desulfurization ash circulation pipe 5, a desulfurization mechanism 7 is jointly arranged on the desulfurization ash circulation pipe 5 and the desulfurization tank 1, and a heat recovery mechanism 8 is arranged on the left side of the desulfurization tank 1.

[0037] Among them, the desulfurization mechanism 7 includes a pressure relief pipe 70, the pressure relief pipe 70 is fixedly connected to the vertical part of the desulfurization ash circulation pipe 5, a fixed piece 71 is fixedly connected to the inner wall of the pressure relief pipe 70, a telescopic piece 72 is fixedly connected to the inner wall of the fixed piece 71, a plug 73 is fixedly connected to the left end of the telescopic piece 72, the plug 73 is slidably connected to the desulfurization ash circulation pipe 5, a plurality of friction ring grooves 74 are formed on the surface of the plug 73, and the plurality of friction ring grooves 74 are evenly distributed on the plug 73. Through the arrangement of the friction ring grooves 74, the friction effect on the surface of the plug 73 can be improved. A first spring 75 is arranged outside the telescopic piece 72, one end of the first spring 75 is welded to the fixed piece 71, and the other end of the first spring 75 is fixedly connected to the plug 73. An auxiliary block 76 is fixedly connected to the right end of the telescopic piece 72, a plurality of friction grooves 77 are formed on the surface of the auxiliary block 76, and the plurality of friction grooves 77 are arranged in a circular array on the auxiliary block 76. Through the arrangement of the friction grooves 77, the friction effect on the surface of the auxiliary block 76 can be improved. The auxiliary block 76 is slidably connected to the pressure relief pipe 70. Through the arrangement of the pressure relief pipe 70, the desulfurization ash flowing instantaneously can be guided, and under the combined use of the plug 73 and the auxiliary block 76, the fluid stress can be released.

[0038] Among them, a first servo motor 78 is fixedly installed at the upper end of the desulfurization tank 1. The output shaft of the first servo motor 78 is rotatably connected to the desulfurization tank 1. The output shaft of the first servo motor 78 is fixedly connected to a rotating seat 79. A material discharging groove 790 is formed on the surface of the rotating seat 79, and a material discharging hole 791 is formed on the surface of the rotating seat 79. The material discharging hole 791 communicates with the material discharging groove 790. An annular groove 792 is formed on the inner side wall of the desulfurization tank 1. A guide rod 793 is fixedly connected to the inner wall of the rotating seat 79. A guide block 794 is slidably sleeved on the outer side of the guide rod 793. The guide block 794 is slidably connected to the rotating seat 79. A second spring 795 is arranged on the outer side of the guide rod 793. One end of the second spring 795 is welded to the guide block 794, and the other end of the second spring 795 is welded to the rotating seat 79. An adjusting piece 796 is fixedly connected to the upper end of the guide block 794. A limiting ball 797 is fixedly connected to the end face of the adjusting piece 796. The limiting ball 797 is slidably connected to the annular groove 792. Through the arrangement of structures such as the material discharging groove 790 and the material discharging hole 791, the desulfurization ash can be discharged for use. Under the action of the first servo motor 78, the rotating seat 79 can rotate to uniformly discharge the desulfurization ash for use. With the cooperation of the limiting ball 797 and the annular groove 792, the rotation of the rotating seat 79 can be guided to ensure the stable rotation of the rotating seat 79.

[0039] Among them, a second servo motor 798 is fixedly installed on the back of the desulfurization tank 1 through a support ear. The output shaft of the second servo motor 798 is rotatably connected to the desulfurization tank 1. A winding wheel 799 is fixedly sleeved on the outer side of the output shaft of the second servo motor 798. A traction wire 700 is arranged on the surface of the winding wheel 799. The lower end of the traction wire 700 is fixedly connected to an air distribution net 701. A moving ring 702 is fixedly sleeved on the outer side of the air distribution net 701. The moving ring 702 is slidably connected to the desulfurization tank 1. A support piece 703 is fixedly connected to the inner wall of the desulfurization tank 1. A third spring 704 is welded to the upper end of the support piece 703. The other end of the third spring 704 is welded to the air distribution net 701. Through the combined use of the second servo motor 798, the winding wheel 799, the traction wire 700, and the third spring 704, the air distribution net 701 can be made to vibrate to discharge the desulfurization ash by vibrating for use.

[0040] The heat recovery mechanism 8 includes a fixing ear 80, the left end of the desulfurization tank 1 is fixedly connected with the fixing ear 80, the upper end of the fixing ear 80 is fixedly connected with a water storage tank 81, the inner wall of the desulfurization tank 1 is fixedly connected with an output pipe 82, the output pipe 82 is fixedly connected to the water storage tank 81, the inner wall of the water storage tank 81 is fixedly connected with a coil 83, the coil 83 is fixedly connected to the output pipe 82, the circulation pipe of the coil 83 is fixedly connected to the fixing ear 80, and the circulation pipe of the coil 83 is bonded with an elastic sheet 84. An agitation plate 85 is bonded to the left end of the elastic plate 84, and a submersible motor 86 is fixedly installed on the inner bottom of the water storage tank 81. The output shaft of the submersible motor 86 is fixedly connected to a contact ball 87, and the contact ball 87 is in contact with the agitation plate 85. Through the coordinated use of the water storage tank 81 and the coil 83, the flue gas and the water body can be used for heat exchange, and under the structure of the submersible motor 86, the contact ball 87, the elastic plate 84 and the like, the agitation plate 85 can be shaken to agitate the water body to accelerate the heat exchange efficiency of the water body.

[0041] A method for using a circulating semi-dry desulfurization device, the specific steps comprising:

[0042] Step 1: Through the setting of the Venturi air inlet pipe 3, the flue gas can be input into the desulfurization tank 1. Under the action of the air distribution net 701, the flue gas can be evenly distributed. Under the action of the desulfurization ash input pipe 4, dry desulfurization ash can be input into the discharge trough 790 of the rotating seat 79. The output shaft is driven by the servo motor 78 to rotate, so as to drive the rotating seat 79 to rotate, and the desulfurization ash is rotated and distributed. Under the action of the discharge hole 791, the desulfurization ash is evenly distributed, thereby the flue gas is fed. The catalytic desulfurization reaction is carried out. When the rotating seat 79 rotates, the guide block 794 can be driven to rotate, so as to drive the moving piece 796 to rotate, and then drive the limiting ball 797 to slide along the inner wall of the annular groove 792, and guide the rotating seat 79 to rotate, so as to ensure the rotation stability of the rotating seat 79. Under the deformation action of the spring 795, the guide block 794 can be pushed to drive the moving piece 796 to move, so as to drive the limiting ball 797 to always contact with the annular groove 792, so as to ensure the good rotation stability of the rotating seat 79.

[0043] Step 2: Through the action of the air distribution network 701, and the aperture of the air distribution network 701 being larger than the particles of the desulfurized ash, the desulfurized ash after the desulfurization reaction is fed. Start the servo motor two 798 to drive the output shaft to rotate forward, so as to drive the winding wheel 799 to rotate, wind up the traction wire 700, drive the air distribution network 701 to move upward, and drive the moving ring 702 to slide along the inner wall of the desulfurization tank 1. Under the action of the support piece 703, the spring three 704 deforms. By driving the output shaft of the servo motor two 798 to rotate reversely, the winding wheel 799 is driven to rotate, the traction wire 700 is lowered, the spring three 704 recovers its deformation, and then the air distribution network 701 is pulled to move downward, causing the air distribution network 701 to vibrate, improving the feeding effect of the desulfurized ash;

[0044] Step 3: Through the suction action of the transfer pump 6 and in cooperation with the conveying effect of the desulfurized ash circulation pipe 5, the desulfurized ash can be sucked and recycled, improving the operation efficiency. When the desulfurized ash instantaneously flows through the desulfurized ash circulation pipe 5, under the impact of the desulfurized ash, the plug 73 can be pushed to move, causing the plug 73 to slide along the inner wall of the pressure relief pipe 70. In cooperation with the action of the friction ring groove 74, the friction effect of the plug 73 can be improved. When the plug 73 moves, the telescopic piece 72 can be driven to slide along the inner wall of the fixed piece 71, causing the spring one 75 to deform. When the telescopic piece 72 moves, the auxiliary block 76 can be driven to slide along the inner wall of the pressure relief pipe 70. Under the action of the friction groove 77, the friction effect on the surface of the auxiliary block 76 can be improved, and then the fluid stress instantaneously flowing through the desulfurized ash circulation pipe 5 is released to avoid the problem of pipeline impact damage;

[0045] Step 4: Through the setting of the output pipe 82, the purified flue gas can be output and used. In cooperation with the conveying action of the coil pipe 83, the flue gas can flow normally, and then the flue gas exchanges heat with the water body in the water storage tank 81 to utilize the waste heat of the flue gas, improving the energy-saving and environmental protection characteristics. The submersible motor 86 drives the output shaft to rotate to drive the contact ball 87 to rotate, so that the contact ball 87 squeezes the agitating piece 85 to drive the agitating piece 85 to move, causing the elastic piece 84 to deform. When the contact ball 87 separates from the agitating piece 85, the elastic piece 84 recovers its deformation to drive the agitating piece 85 to move back, and then the agitating piece 85 vibrates continuously to agitate the water body, accelerating the flow rate of the water body and improving the heat exchange efficiency.

[0046] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A circulating semi-dry desulfurization device, comprising a desulfurization tank (1), characterized in that: The lower side of the desulfurization tank (1) is fixedly connected to four supporting legs (2) arranged in a circular array, the inner wall of the desulfurization tank (1) is fixedly connected to a Venturi air inlet pipe (3), the inner wall of the desulfurization tank (1) is fixedly connected to a desulfurization ash input pipe (4), the discharge pipe of the desulfurization tank (1) is fixedly connected to a desulfurization ash circulation pipe (5), the upper horizontal portion of the desulfurization ash circulation pipe (5) is fixedly connected to the desulfurization tank (1), a delivery pump (6) is arranged on the outer side of the vertical portion of the desulfurization ash circulation pipe (5), a desulfurization mechanism (7) is arranged on the desulfurization ash circulation pipe (5) and the desulfurization tank (1), and a heat recovery mechanism (8) is arranged on the left side of the desulfurization tank (1).

2. A circulating semi-dry desulfurization device according to claim 1, characterized in that: The desulfurization mechanism (7) comprises a pressure relief pipe (70), the vertical portion of the desulfurization ash circulation pipe (5) is fixedly connected with the pressure relief pipe (70), the inner wall of the pressure relief pipe (70) is fixedly connected with a fixing plate (71), the inner wall of the fixing plate (71) is fixedly connected with a telescopic plate (72), the left end of the telescopic plate (72) is fixedly connected with a plug (73), the plug (73) is slidably connected to the desulfurization ash circulation pipe (5), a spring (75) is arranged on the outer side of the telescopic plate (72), one end of the spring (75) is welded to the fixing plate (71), the other end of the spring (75) is fixedly connected to the plug (73), the right end of the telescopic plate (72) is fixedly connected with an auxiliary block (76), and the auxiliary block (76) is slidably connected to the pressure relief pipe (70).

3. A circulating semi-dry desulfurization device according to claim 1, characterized in that: A servo motor (78) is fixedly mounted on the upper end of the desulfurization tank (1), and the output shaft of the servo motor (78) is rotatably connected to the desulfurization tank (1). The output shaft of the servo motor (78) is fixedly connected to a rotating seat (79). A material discharge trough (790) is provided on the surface of the rotating seat (79), and a material discharge hole (791) is provided on the surface of the rotating seat (79). The material discharge hole (791) is communicated with the material discharge trough (790). An annular groove (792) is provided on the inner side wall of the desulfurization tank (1), and a guide rod (793) is fixedly connected to the inner wall of the rotating seat (79). ), the outer side of the guide rod (793) is slidably sleeved with a guide block (794), the guide block (794) is slidably connected to the rotating seat (79), the outer side of the guide rod (793) is provided with a second spring (795), one end of the second spring (795) is welded to the guide block (794), and the other end of the second spring (795) is welded to the rotating seat (79), the upper end of the guide block (794) is fixedly connected with a moving plate (796), the end surface of the moving plate (796) is fixedly connected with a limiting ball (797), and the limiting ball (797) is slidably connected to the annular groove (792).

4. A circulating semi-dry desulfurization device according to claim 1, characterized in that: A servo motor 2 (798) is fixedly mounted on the back of the desulfurization tank (1) via a support ear, the output shaft of the servo motor 2 (798) is rotatably connected to the desulfurization tank (1), a reel (799) is fixedly sleeved on the outer side of the output shaft of the servo motor 2 (798), a traction line (700) is provided on the surface of the reel (799), the lower end of the traction line (700) is fixedly connected to an air distribution net (701), the outer side of the air distribution net (701) is fixedly sleeved with a moving ring (702), the moving ring (702) is slidably connected to the desulfurization tank (1), the inner wall of the desulfurization tank (1) is fixedly connected to a support sheet (703), the upper end of the support sheet (703) is welded with a spring 3 (704), and the other end of the spring 3 (704) is welded to the air distribution net (701).

5. A circulating semi-dry desulfurization device according to claim 2, characterized in that: A plurality of friction ring grooves (74) are formed on the surface of the plug (73), and the plurality of friction ring grooves (74) are evenly distributed on the plug (73).

6. A circulating semi-dry desulfurization device according to claim 2, characterized in that: A plurality of friction grooves (77) are provided on the surface of the auxiliary block (76), and the plurality of friction grooves (77) are arranged in a ring array on the auxiliary block (76).

7. A circulating semi-dry desulfurization device according to claim 1, characterized in that: The heat recovery mechanism (8) comprises a fixing ear (80), the left end of the desulfurization tank (1) is fixedly connected to the fixing ear (80), the upper end of the fixing ear (80) is fixedly connected to a water storage tank (81), the inner wall of the desulfurization tank (1) is fixedly connected to an output pipe (82), the output pipe (82) is fixedly connected to the water storage tank (81), the inner wall of the water storage tank (81) is fixedly connected to a coil (83), the coil (83) is connected to the output pipe (81), and the heat recovery mechanism (8) comprises a fixing ear (80), the left end of the desulfurization tank (1) is fixedly connected to the fixing ear (80), the upper end of the fixing ear (80) is fixedly connected to a water storage tank (81), the inner wall of the desulfurization tank (1) is fixedly connected to an output pipe (82), the output pipe (82) is fixedly connected to the water storage tank ( 2) fixed connection, the flow pipe of the coil (83) is fixedly connected to the fixed ear (80), the flow pipe of the coil (83) is bonded with an elastic sheet (84), the left end of the elastic sheet (84) is bonded with an agitation sheet (85), a submersible motor (86) is fixedly installed on the inner bottom of the water storage tank (81), the output shaft of the submersible motor (86) is fixedly connected with a contact ball (87), and the contact ball (87) is in contact with the agitation sheet (85).

8. The method for using a circulating semi-dry desulfurization device according to any one of claims 1 to 7, characterized in that: The specific steps include: Step 1: By setting the venturi air inlet pipe (3), flue gas can be input into the desulfurization tank (1). Under the action of the air distribution net (701), the flue gas can be evenly distributed. Under the action of the desulfurization ash input pipe (4), dry desulfurization ash can be input into the discharge trough (790) of the rotating seat (79). The output shaft is driven by the servo motor (78) to rotate, so as to drive the rotating seat (79) to rotate, and the desulfurization ash is rotated and distributed. Under the action of the discharge hole (791), the desulfurization ash is evenly distributed, thereby catalytically desulfurizing the flue gas. Sulfur reaction, when the rotating seat (79) rotates, it can drive the guide block (794) to rotate, so as to drive the moving piece (796) to rotate, and then drive the limiting ball (797) to slide along the inner wall of the annular groove (792), and guide the rotating seat (79) to rotate, so as to ensure the rotation stability of the rotating seat (79), and under the deformation action of the second spring (795), the guide block (794) can be pushed to drive the moving piece (796) to move, so as to drive the limiting ball (797) to always contact with the annular groove (792), so as to ensure the good rotation stability of the rotating seat (79); Step 2: through the action of the air distribution net (701), and the aperture of the air distribution net (701) is larger than the particles of the desulfurization ash, the desulfurization ash after the desulfurization reaction is discharged, the servo motor 2 (798) is started to drive the output shaft to rotate in the forward direction, so as to drive the winding wheel (799) to rotate, and the traction line (700) is wound up to drive the air distribution net (701) to move upward, and drive the moving ring (702) to slide along the inner wall of the desulfurization tank (1), under the action of the support sheet (703), the spring 3 (704) is deformed, and the servo motor 2 (798) drives the output shaft to rotate in the reverse direction to drive the winding wheel (799) to rotate, and the traction line (700) is moved downward, so that the spring 3 (704) recovers its deformation, and then the air distribution net (701) is pulled downward, so that the air distribution net (701) is shaken, thereby improving the discharge effect of the desulfurization ash; Step 3: Through the suction effect of the delivery pump (6) and the delivery effect of the desulfurization ash circulation pipe (5), the desulfurization ash can be sucked and recycled to improve the operation efficiency. When the desulfurization ash flows instantly inside the desulfurization ash circulation pipe (5), the plug (73) can be pushed to move under the impact of the desulfurization ash, so that the plug (73) slides along the inner wall of the pressure relief pipe (70). In combination with the effect of the friction ring groove (74), the friction effect of the plug (73) can be improved. When the plug (73) moves, the expansion piece (72) can be driven to slide along the inner wall of the fixed piece (71), so that the spring 1 (75) is deformed. When the expansion piece (72) moves, the auxiliary block (76) can be driven to slide along the inner wall of the pressure relief pipe (70). Under the effect of the friction groove (77), the friction effect of the surface of the auxiliary block (76) can be improved, thereby releasing the stress of the fluid that instantly flows inside the desulfurization ash circulation pipe (5) to avoid the problem of pipeline impact damage. Step 4: By setting the output pipe (82), the purified flue gas can be output for use, and in combination with the conveying function of the coil (83), the flue gas can be circulated normally, so that the flue gas and the water inside the water storage tank (81) can be heat exchanged, and the waste heat of the flue gas can be utilized to improve the energy-saving and environmental protection characteristics. The output shaft is driven to rotate by the submersible motor (86) to drive the contact ball (87) to rotate, so that the contact ball (87) squeezes the agitation plate (85) to push the agitation plate (85) to move, so that the elastic plate (84) is deformed. When the contact ball (87) is separated from the agitation plate (85), the elastic plate (84) recovers its deformation to drive the agitation plate (85) to reset, so that the agitation plate (85) is continuously shaken to agitate the water, so as to accelerate the flow rate of the water and improve the heat exchange efficiency.

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