Device for online replacement of desulfurizing agent for cross-flow calcium-based fixed bed desulfurization system

Abstract

The utility model discloses a device for online replacement of a desulfurizing agent for a cross-flow calcium-based fixed bed desulfurization system, relates to the technical field of cross-flow calcium-based fixed bed desulfurization systems, and solves the technical problems that hoisting ton bags are tedious and dangerous to replace, and production continuity is affected when no standby fixed bed desulfurization system is used for material replacement. Comprising a fixed bed unit, and the fixed bed unit comprises a desulfurizer layer arranged in the fixed bed unit and a shutter ventilation window installed on the inner side of the desulfurizer layer; the conveying unit is positioned above the fixed bed unit and is used for replacing an internal desulfurizing agent; on-line refueling of the cross-flow calcium-based fixed bed desulfurization system is achieved without a standby fixed bed unit, the problems that a desulfurization system with a standby fixed bed is high in cost and large in occupied area are solved, the problem that production continuity is affected during refueling of the desulfurization system without the standby fixed bed is solved, meanwhile, the replacement amount of a desulfurizing agent is convenient to regulate and control, and the production efficiency is improved. And when the desulfurizing agent is replaced, the short circuit phenomenon of the flue gas is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crossflow calcium base fixed bed desulfurization system technical field, specifically a device for crossflow calcium base fixed bed desulfurization system on -line replacement desulfurizer. BACKGROUND

[0002] Calcium base fixed bed desulfurization technology, with its equipment simple, control convenient and extensive temperature adaptability, occupies a place in the desulfurization process. According to whether the spare fixed bed unit is equipped, calcium base fixed bed desulfurization system can be divided into on -line and off -line replacement mode fixed bed desulfurization tower.

[0003] The existing some whether it is on -line or off -line system, the loading and replacement process of desulfurizer depends on electric hoist and automobile crane and other hoisting equipment, and the desulfurizer is transported to the tower top, then the ton bag is opened by manual operation, and the desulfurizer is naturally dropped into the tower, and the ton bag is opened by manual operation to the two desulfurization feed ports, which has certain danger, the desulfurizer feeding amount cannot be controlled at any time, the desulfurizer replacement period is relatively long, and the desulfurizer replacement amount is not accurate, and for the desulfurization system without spare fixed bed unit, the material replacement must sacrifice the production time. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art, and therefore, the utility model provides a device for crossflow calcium base fixed bed desulfurization system on -line replacement desulfurizer.

[0005] A device for crossflow calcium base fixed bed desulfurization system on -line replacement desulfurizer, comprising:

[0006] The fixed bed unit comprises a desulfurizer layer arranged inside, a louvered air window mounted on the inner side of the desulfurizer layer and a closing wall mounted on the top of the louvered air window.

[0007] The conveying unit is located above the fixed bed unit and replaces the internal desulfurizer, and the conveying unit comprises two discharge hoppers mounted on the top of each fixed bed unit, a horizontal conveyor conveying desulfurizer to the discharge hoppers, a push plate discharging desulfurizer to the two discharge hoppers at the same time and a weighing discharge valve weighing the desulfurizer about to be discharged.

[0008] The feeding unit is vertically located in front of the conveying unit and provides desulfurizer to the horizontal conveyor.

[0009] Preferably, the fixed bed unit further comprises a flue gas inlet and a flue gas outlet arranged on the front surface of the fixed bed unit, the flue gas outlet is located above the flue gas inlet, and the flue gas outlet is located below the closing wall.

[0010] Preferably, an outer flue is arranged between the outer side of the desulfurizer layer and the inner wall of the fixed bed unit, an inner flue is arranged in the inner side of the louvered air vent, a flue partition is arranged between the flue gas inlet and the flue gas outlet, and a desulfurization feeding port connected with the discharge hopper is arranged at the top of the fixed bed unit.

[0011] Preferably, the conveying unit further comprises an enclosing box body surrounding the horizontal conveyor, a pushing cylinder driving the left and right movement of the pushing plate is arranged at the outer side of the enclosing box body, and a second discharging pipe and a first discharging pipe connected with two discharge hoppers are respectively arranged at the left and right sides of the enclosing box body.

[0012] Preferably, a rack is arranged between the front and rear surfaces of the enclosing box body and the fixed bed unit, and an auxiliary member is arranged between the two sides of the pushing plate and the first and second discharging pipes.

[0013] Preferably, the auxiliary member comprises a pushing soft rod installed on the side of the pushing plate, the outer end of the pushing soft rod extends into the first discharging pipe, and a load-bearing spherical block is arranged at the outer end of the pushing soft rod.

[0014] Preferably, the feeding unit comprises a vertical feeding machine, an inclined discharging port feeding the horizontal conveyor is arranged at the left side of the upper end of the vertical feeding machine, a material temporary storage hopper is arranged at the right side of the lower end of the vertical feeding machine, a closed chute is arranged at the bottom of the material temporary storage hopper and the right side of the vertical feeding machine, and a pushing member pushing the desulfurizer in the closed chute is arranged in the material temporary storage hopper.

[0015] Preferably, the pushing member comprises a driving cylinder installed vertically on the inner wall of the material temporary storage hopper, a piston rod at the lower end of the driving cylinder is connected with a U-shaped lifting frame, a pushing plate is arranged at the inner side of the lower end of the lifting frame, and the two are rotationally connected through a rotating shaft.

[0016] Preferably, a fixed protruding plate is arranged at the left side of the rotating shaft and the pushing plate, and a metal elastic sheet is arranged between the two fixed protruding plates.

[0017] Preferably, a notch for the movement of the pushing plate is arranged at the position corresponding to the first discharging pipe at the two sides of the horizontal conveyor.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] (1) The utility model realizes the on-line replacement of the cross-flow calcium-based fixed bed desulfurization system without a standby fixed bed unit, solves the problems of high cost and large occupation of the standby fixed bed desulfurization system, eliminates the problem of affecting the production continuity when the desulfurizer is replaced without a standby fixed bed desulfurization system, simultaneously, the replacement amount of the desulfurizer is convenient to control, and the flue gas does not appear the short circuit phenomenon when the desulfurizer is replaced.

[0020] (2) The auxiliary component is designed, the desulfurizer in the first downpipe and the second downpipe is pushed respectively in the left and right movement of the material pushing plate, the desulfurizer is prevented from being blocked in the pipeline, and the downflow smoothness of the desulfurizer is increased.

[0021] (3) The material pushing component is designed, the desulfurizer in the material temporary storage hopper does not appear the blocking condition in the closed chute, the desulfurizer feeding sustainability and the feeding amount are guaranteed, and the continuity of the subsequent desulfurizer provided to the fixed bed unit is increased. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic view of the online desulfurizer replacement device of the cross-flow calcium-based fixed bed desulfurization system of the utility model;

[0023] Figure 2 It is the structure schematic view of the online desulfulfurizer replacement device of the cross-flow calcium-based fixed bed desulfurization system of the utility model; Figure 1 It is the left view structure schematic view of the online desulfurizer replacement device of the cross-flow calcium-based fixed bed desulfurization system of the utility model;

[0024] Figure 3 It is the internal structure schematic view of the conveying unit of the utility model; Figure 1 It is the internal structure schematic view of the conveying unit of the utility model;

[0025] Figure 4 It is the longitudinal section view of the fixed bed unit of the utility model; Figure 1 It is the longitudinal section view of the fixed bed unit of the utility model;

[0026] Figure 5 It is the structure schematic view of the auxiliary component of the utility model; Figure 3 It is the structure schematic view of the auxiliary component of the utility model;

[0027] Figure 6 It is the internal structure schematic view of the feeding unit of the utility model; Figure 1 It is the internal structure schematic view of the feeding unit of the utility model;

[0028] Figure 7 It is the structure schematic view of the material pushing component of the utility model; Figure 6 It is the structure schematic view of the material pushing component of the utility model;

[0029] In the figure: 100, fixed bed unit; 101, outer flue; 102, desulfurizer layer; 103, louvered air vent; 104, closed wall; 105, flue gas inlet; 106, flue gas outlet; 107, desulfurization feed inlet; 108, inner flue; 109, flue partition; 200, conveying unit; 201, surrounding box; 202, horizontal conveyor; 203, discharge hopper; 204, first downpipe; 205, second downpipe; 206, push plate; 207, push cylinder; 208, auxiliary component; 2081, poking soft stick; 2082, load-bearing spherical block; 2083, mounting ring; 209, rack; 210, weighing discharge valve; 300, feeding unit; 301, vertical feeding machine; 302, inclined discharge port; 303, material temporary storage hopper; 304, closed downpipe; 305, poking component; 3051, driving cylinder; 3052, lifting frame; 3053, poking plate; 3054, rotating shaft; 3055, fixed lug; 3056, metal spring. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely in combination with the embodiments below. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] Embodiment one

[0032] Please refer to Figure 1 - Figure 4 The present application provides a device for replacing desulfurizer on line in a cross-flow calcium-based fixed bed desulfurization system, comprising:

[0033] The fixed bed unit 100 includes the desulfurizer layer 102 arranged inside, the louvered air vent 103 mounted on the inner side of the desulfurizer layer 102, and the closed wall 104 mounted on the top of the louvered air vent 103, according to the quantity of the fixed bed unit 100 for processing flue gas. The closed wall 104 provides a premise for replacing the desulfurizer on line in the cross-flow calcium-based fixed bed desulfurization system without a standby fixed bed unit 100, thereby avoiding the short circuit phenomenon of flue gas when replacing the desulfurizer;

[0034] The conveying unit 200 is located above the fixed bed unit 100 and replaces the internal desulfurizer. The conveying unit 200 includes two discharge hoppers 203 mounted on the top of each fixed bed unit 100, the horizontal conveyor 202 horizontally conveying the desulfurizer to the discharge hoppers 203, the push plate 206 simultaneously discharging the desulfurizer to the two discharge hoppers 203, and the weighing discharge valve 210 weighing the desulfurizer about to be discharged;

[0035] The upper feeding unit 300 vertically located in front of the conveying unit 200 and providing desulfurizer to the horizontal conveyor 202 can vertically upwardly convey the desulfurizer needing to be replaced to the horizontal conveyor 202.

[0036] In the embodiment, preferably, the fixed bed unit 100 further comprises a flue gas inlet 105 and a flue gas outlet 106 arranged on the front surface of the fixed bed unit 100, the flue gas outlet 106 is located above the flue gas inlet 105, the flue gas outlet 106 is located below the closure wall 104, the upper end of the closure wall 104 is fixed to the inner wall of the upper end of the fixed bed unit 100, and the lower end of the closure wall 104 is fixed to the upper end of the louvered air window 103, so as to avoid the phenomenon of short circuit of flue gas when the desulfurizer is replaced, an outer flue 101 is arranged between the outside of the desulfurizer layer 102 and the inner wall of the fixed bed unit 100, an inner flue 108 is arranged in the inside of the louvered air window 103, a flue partition 109 is arranged between the flue gas inlet 105 and the flue gas outlet 106, and a desulfurization feeding port 107 connected with the discharge hopper 203 is arranged on the top of the fixed bed unit 100.

[0037] In the case of no standby layer, and the closure wall 104, when the fixed bed unit 100 is running and the desulfurization feeding port 107 is opened for feeding, because the flow path from the desulfurization feeding port 107 to the flue gas outlet 106 is short and the resistance loss is small, a large amount of air not needing to be desulfurized will enter the inside of the desulfurization system along the shortest path from the desulfurization feeding port 107, mix with the sulfur-containing flue gas to be purified, and be discharged into the atmosphere through the flue gas outlet 106 under the action of the fan of the desulfurization system, so as to cause the amount of air entering the desulfurization system to be large and the amount of flue gas needing to be treated in the desulfurization system to be small under the condition that the flow of the desulfurization system is unchanged, break the flow balance of the entire desulfurization system, cause the outlet of the desulfurization system to have positive pressure, and even affect the normal production of the entire desulfurization system; secondly, after a large amount of air enters the desulfurization system, the oxygen content of the mixed flue gas increases, the equivalent sulfur dioxide concentration becomes large, and there is even a risk of exceeding the standard for emission, and the efficiency of the desulfurization system is reduced; finally, the temperature of the flue gas mixed with the desulfurization flue gas after the normal-temperature air enters the desulfurization system will be reduced to the dew point temperature, which will aggravate the corrosion of the desulfurization system, and the purpose of increasing the closure wall 104 is to increase the flow path of the flue gas from the desulfurization feeding port 107 to the flue gas outlet 106, increase the resistance loss, reduce the amount of air entering the desulfurization system through the desulfurization feeding port 107 during normal operation of the desulfurization system, and reduce the influence on the entire desulfurization system.

[0038] In the embodiment, preferably, the conveying unit 200 further comprises a surrounding box 201 surrounding the horizontal conveyor 202, Figure 6The inclined discharge port 302 in the box 201 extends through the box 201 to above the horizontal conveyor 202, the box 201 is provided with a pushing cylinder 207 driving the pushing plate 206 to move left and right, the left and right sides of the box 201 are respectively provided with a second discharge pipeline 205 and a first discharge pipeline 204 connected with two discharge hoppers 203, and the second discharge pipeline 205 and the first discharge pipeline 204 are both inclined downward, facilitating the desulfurizing agent to be sent into the discharge hopper 203.

[0039] In summary, in use, the desulfurizing agent to be replaced is conveyed to the horizontal conveyor 202 by the feeding unit 300, the horizontal conveyor 202 moves to convey the desulfurizing agent on it to the position of each fixed bed unit 100, each fixed bed unit 100 corresponds to a pushing plate 206, with the working of the horizontal conveyor 202, at the same time, the pushing cylinder 207 works, the piston rod in the pushing cylinder 207 extends and retracts to drive the pushing plate 206 to move left and right on the surface of the conveying belt, when the pushing plate 206 moves to the right, the desulfurizing agent on the conveying belt is pushed into the first discharge pipeline 204 and falls into the discharge hopper 203 along the inclined first discharge pipeline 204, and the piston rod in the pushing cylinder 207 retracts to drive the pushing plate 206 to move to the left, the desulfurizing agent on the conveying belt is pushed into the second discharge pipeline 205 and moves downward along the slope of the second discharge pipeline 205 and falls into the discharge hopper 203, in the process of the pushing plate 206 moving left and right, the conveying belt always moves, ensuring that there is always desulfurizing agent at the pushing plate 206 in the process of the pushing plate 206 moving, and the desulfurizing agent can be supplied to the two discharge hoppers 203 at the same time, when the weight of the desulfurizing agent in the discharge hopper 203 reaches the set weight, the weighing discharge valve 210 opens, and the two discharge hoppers 203 simultaneously supplement the desulfurizing agent to the fixed bed unit 100, compared with manually opening the two ton bags to discharge, the danger is reduced, and the amount of desulfurizing agent discharged is controllable, when the desulfurizing agent in the discharge hopper 203 is discharged, the weighing discharge valve 210 works again to close the discharge hopper 203, facilitating the use of the next replacement of the desulfurizing agent, and after the replacement of the desulfurizing agent in the fixed bed unit 100 is completed, the desulfurized flue gas enters the inside of the fixed bed unit 100 under the action of the desulfurizing booster fan from the flue gas inlet 105, horizontally passes through the louver air permeable window 103 in the inner flue 108 to enter the desulfurizing agent layer 102, after desulfurization in the desulfurizing agent layer 102, enters the outer flue 101, and after secondary desulfurization by the desulfurizing agent layer 102 and the louver air permeable window 103, returns to the inner flue 108, and is discharged from the fixed bed unit 100 through the flue gas outlet 106, completing the desulfurization process.

[0040] Example Two

[0041] Reference Figure 5 This is a second embodiment of the utility model.

[0042] In the embodiment, preferably, the frame 209 is arranged between the front and rear surfaces of the box body 201 and the fixed bed unit 100, and the auxiliary members 208 are arranged between the two sides of the pushing plate 206 and the first and second feeding pipes 204 and 205, respectively. The auxiliary members 208 can push the desulfurizing agent in the first and second feeding pipes 204 and 205 during the left and right movement of the pushing plate 206, so as to avoid the blockage of the desulfurizing agent in the pipes, increase the smoothness of the desulfurizing agent feeding, and facilitate the movement of the desulfurizing agent in the inclined pipes. The auxiliary members 208 include the pushing soft rods 2081 arranged on the side of the pushing plate 206. The pushing soft rods 2081 can be silica gel rods, which have elasticity and hardness. The lengths of the pushing soft rods 2081 in the first and second feeding pipes 204 and 205 are different, so as to be adapted to the corresponding feeding pipes. The outer ends of the pushing soft rods 2081 extend into the first feeding pipe 204, and the outer end portions of the pushing soft rods 2081 are provided with the heavy ball-shaped blocks 2082. The upper surface of the pushing plate 206 is provided with the mounting ring 2083 connected with the inner piston rod of the pushing cylinder 207, so as to facilitate the disassembly and assembly of the pushing plate 206 and the pushing cylinder 207.

[0043] In summary, when the pushing plate 206 moves to the right, the right pushing soft rod 2081 moves in the first feeding pipe 204, and the heavy ball-shaped block 2082 moves in the pipe, so as to push the desulfurizing agent in the pipe and prevent the blockage. Similarly, when the pushing plate 206 moves to the left, the left pushing soft rod 2081 moves in the second feeding pipe 205, and the heavy ball-shaped block 2082 moves along the inclined pipe under the gravity, so as to facilitate the pushing of the desulfurizing agent in the pipe.

[0044] Embodiment three

[0045] Reference Figure 6 and Figure 7 , which is the third embodiment of the utility model.

[0046] In the embodiment, preferably, the feeding unit 300 includes the vertical feeding machine 301. The inclined feeding opening 302 for supplying the horizontal conveyor 202 is arranged on the left side of the upper end of the vertical feeding machine 301. The material temporary storage hopper 303 is arranged on the right side of the lower end of the vertical feeding machine 301. The closed chute 304 is arranged on the right side of the vertical feeding machine 301 and the bottom of the material temporary storage hopper 303. The pushing member 305 for pushing the desulfurizing agent in the closed chute 304 is arranged in the material temporary storage hopper 303.

[0047] In this embodiment, preferably, the material stirring member 305 comprises a driving cylinder member 3051 vertically mounted on the inner wall of the material temporary storage hopper 303, the driving cylinder member 3051 comprises a driving cylinder and a shell mounted on the outside of the driving cylinder, the shell is fixed on the inner wall of the material temporary storage hopper 303 and protects the driving cylinder, and the material stirring member 305 can prevent the desulfurizer in the material temporary storage hopper 303 from being blocked when entering the closed chute 304, thereby ensuring the continuity and amount of the desulfurizer feeding, increasing the continuity of the desulfurizer provided to the fixed bed unit 100, the lower end of the piston rod in the driving cylinder member 3051 is connected with a U-shaped lifting frame 3052, the inner side of the lower end of the lifting frame 3052 is provided with a material stirring plate 3053, and the two are rotationally connected through a rotating shaft 3054, the lower end of the material stirring plate 3053 is arc-shaped, facilitating the adhesion to the inner wall of the closed chute 304, and the left side of the rotating shaft 3054 and the material stirring plate 3053 are both provided with a fixed lug plate 3055, a metal spring plate 3056 is arranged between the two fixed lug plates 3055, and a space sufficient for elastic deformation is left between the metal spring plate 3056 and the inner wall of the closed chute 304. The initial position of the material stirring plate 3053 is not vertical, but inclined to the left, facilitating the adaptation to the shape of the closed chute 304.

[0048] In this embodiment, preferably, the horizontal conveyor 202 is provided with notches at positions corresponding to the first discharging pipeline 204 on both sides, and the notches are used for the movement of the material pushing plate 206. Similarly, the first discharging pipeline 204 and the second discharging pipeline 205 both penetrate the surrounding box body 201, without affecting the desulfurizer on the horizontal conveyor 202 entering the discharging pipeline.

[0049] In summary, the desulfurizer can be poured into the storage from the top of the material temporary storage hopper 303, and when the desulfurizer needs to be conveyed, the vertical feeding machine 301 works to gradually convey the desulfurizer in the closed chute 304 upward, and the desulfurizer in the material temporary storage hopper 303 enters the closed chute 304 for replenishment. In the replenishment process, the driving cylinder member 3051 works, the internal piston rod drives the lifting frame 3052 to move downward, drives the material stirring plate 3053 to move downward, the lower end of the material stirring plate 3053 adheres to the inner wall of the closed chute 304 and rotates around the rotating shaft 3054, and the rotation of the material stirring plate 3053 also moves along with the lifting frame 3052 to move along the inner wall of the closed chute 304, thereby playing a stirring role on the desulfurizer in the closed chute 304. A cylindrical rod can also be arranged between the lower ends of the two material stirring plates 3053 to increase the stirring area. The metal spring plate 3056 gradually deforms, and when the lifting frame 3052 moves upward along with the piston rod, the metal spring plate 3056 restores the elasticity to drive the material stirring plate 3053 to move upward and reset, facilitating the next use. In the whole process, the material stirring plate 3053 can always stir the desulfurizer in the closed chute 304, preventing the desulfurizer from being retained in the closed chute 304 and increasing the continuity of the desulfurizer feeding.

[0050] Embodiment four

[0051] Combining example one, example two and example three obtains the present example.

[0052] In use, the desulfurizer is temporarily stored by the feeding unit 300 and is conveyed upward to above the fixed bed unit 100, and then the desulfurizer is conveyed to the top of each fixed bed unit 100 by the conveying unit 200, the conveying amount of the desulfurizer is regulated, and the fixed bed unit 100 is replaced by putting the desulfurizer with a suitable weight into the fixed bed unit 100.

[0053] The above examples are only used to illustrate the technical method of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. A device for on-line replacement of desulfurizer in a calcium-based fixed-bed desulfurization system in cross flow, characterized in that, The application relates to a desulfurization device. The fixed bed unit (100) comprises a desulfurizer layer (102) arranged inside, a louver air vent (103) arranged inside the desulfurizer layer (102) and a closing wall (104) arranged on the top of the louver air vent (103). The conveying unit (200) is arranged above the fixed bed unit (100) and is used for replacing the internal desulfurizer, the conveying unit (200) comprises two discharge hoppers (203) arranged on the top of each fixed bed unit (100), a horizontal conveying machine (202) used for conveying the desulfurizer to the horizontal direction of the discharge hoppers (203), a pushing plate (206) used for discharging the desulfurizer to the two discharge hoppers (203) simultaneously and a weighing discharge valve (210) used for weighing the desulfurizer to be discharged. The feeding unit (300) is vertically arranged in front of the conveying unit (200) and is used for providing the desulfurizer to the horizontal conveying machine (202).

2. The device for replacing the desulfurizer on line in the cross-flow calcium-based fixed-bed desulfurization system according to claim 1, characterized in that, The fixed bed unit (100) further comprises a flue gas inlet (105) arranged on the front surface of the fixed bed unit (100) and a flue gas outlet (106) arranged above the flue gas inlet (105) and below the closing wall (104).

3. The device for replacing the desulfurizer on line in the cross-flow calcium-based fixed-bed desulfurization system according to claim 2, characterized in that, An outer flue (101) is arranged between the outer side of the desulfurizer layer (102) and the inner wall of the fixed bed unit (100), an inner flue (108) is arranged in the inner side of the louver air vent (103), a flue partition (109) is arranged between the flue gas inlet (105) and the flue gas outlet (106), and a desulfurization feeding port (107) is arranged on the top of the fixed bed unit (100) and is connected with the discharge hoppers (203).

4. The device for replacing the desulfurizer in a calcium-based fixed-bed desulfurization system according to claim 1, characterized in that, The conveying unit (200) further comprises an enclosing box (201) used for enclosing the horizontal conveying machine (202), a pushing cylinder (207) arranged on the outer side of the enclosing box (201) and used for moving the pushing plate (206) leftward and rightward, a second discharge pipeline (205) and a first discharge pipeline (204) arranged on the left side and the right side of the enclosing box (201) respectively and connected with the two discharge hoppers (203).

5. The device for replacing the desulfurizer in a calcium-based fixed-bed desulfurization system according to claim 4, characterized in that, A rack (209) is arranged between the front and back surfaces of the enclosing box (201) and the fixed bed unit (100), and an auxiliary component (208) is arranged between the pushing plate (206) and the first discharge pipeline (204) and the second discharge pipeline (205) respectively.

6. The device for replacing the desulfurizer on line in the cross-flow calcium-based fixed-bed desulfurization system according to claim 5, characterized in that, The auxiliary component (208) comprises a pushing soft rod (2081) arranged on the side of the pushing plate (206), the pushing soft rod (2081) extends to the first discharge pipeline (204) at the outer end, and a load-bearing spherical block (2082) is arranged at the outer end of the pushing soft rod (2081).

7. The device for replacing the desulfurizer in a calcium-based fixed-bed desulfurization system according to claim 1, characterized in that, The feeding unit (300) comprises a vertical feeding machine (301), the left side of the upper end of the vertical feeding machine (301) is provided with an inclined discharging port (302) for feeding the horizontal conveyor (202), the right side of the lower end of the vertical feeding machine (301) is provided with a material temporary storage hopper (303), the bottom of the material temporary storage hopper (303) is provided with a closed chute (304) on the right side of the vertical feeding machine (301), and the inside of the material temporary storage hopper (303) is provided with a material pushing component (305) for pushing the desulfurizer in the closed chute (304).

8. The device for replacing the desulfurizer in a calcium-based fixed-bed desulfurization system according to claim 7, characterized in that, The material pushing component (305) comprises a driving cylinder (3051) vertically installed on the inner wall of the material temporary storage hopper (303), the lower end of the piston rod in the driving cylinder (3051) is connected with a U-shaped lifting frame (3052), the inner side of the lower end of the lifting frame (3052) is provided with a material pushing plate (3053), and the two are rotationally connected through a rotating shaft (3054).

9. The device for replacing the desulfurizer in a calcium-based fixed-bed desulfurization system according to claim 8, characterized in that, The rotating shaft (3054) and the left side of the material pushing plate (3053) are both provided with fixed convex plates (3055), and metal elastic sheets (3056) are arranged between the two fixed convex plates (3055).

10. The device for replacing the desulfurizer in a calcium-based fixed-bed desulfurization system according to claim 1, characterized in that, The horizontal conveyor (202) is provided with notches for the movement of the pushing plate (206) at positions corresponding to the first discharging pipes (204) on both sides.

Images