CN116272078A - Power plant desulfurizer based on high calcium limestone and preparation method thereof - Google Patents

Abstract

The invention discloses a high-calcium limestone-based power plant desulfurizing agent and a preparation method thereof, and the method specifically comprises the following steps: grinding a high-calcium limestone raw material, an active carbon raw material and a magnesium carbonate raw material into fine particles through a grinder, stirring and mixing the obtained three raw material particles, and adding water for mixing to form lime mixed slurry; pouring the lime mixed slurry into a filtering device, and filtering residues in the lime mixed slurry by using the filtering device to obtain lime mixed slurry filtrate; the invention relates to the technical field of desulfurizing agent production. According to the high-calcium limestone-based power plant desulfurizing agent and the preparation method thereof, through the arrangement of the pushing component, not only is automatic cleaning of filter residues realized, but also the cleaning effect is improved compared with the process of deslagging by utilizing the extrusion paddles, the bottom of the cleaning push plate and the top of the filter plate are both planes, and the filter residues can be well and completely pushed out.

Description

Power plant desulfurizer based on high-calcium limestone and preparation method thereof

technical field

The invention relates to the technical field of desulfurizer production, in particular to a power plant desulfurizer based on high-calcium limestone and a preparation method thereof.

Background technique

At present, there are mainly three kinds of sulfur dioxide control methods used at home and abroad: desulfurization before combustion, desulfurization during combustion and flue gas desulfurization after combustion. Among them, flue gas desulfurization is the main technical means to control sulfur dioxide pollution. The desulfurizer used in flue gas desulfurization is mainly refined from high-calcium limestone.

Referring to the Chinese patent, a new type of filter device for preparing desulfurizer from calcium carbide slag (publication number: CN217961477U, publication date: 2022-12-06), this patent solves the problem that when the traditional filter device is in use, its filter plate is usually connected by bolts. Fixed, although it can effectively guarantee the stability of its use, it is difficult to quickly disassemble and assemble the filter plate after it is used, so that it is not convenient to carry out deep cleaning of the filter plate, so that the surface of the filter plate is easy to adhere to calcium carbide residue, and it will take a long time Accumulation can easily lead to clogging of the filter plate and affect the use effect of the filter plate, but the patent still has the following deficiencies:

(1) The extrusion paddle is helical, while the top of the filter plate is flat, and the extrusion paddle cannot completely discharge the filter residue;

(2) The exhauster and the driving motor are adopted, which not only increases the manufacturing cost, but also consumes a lot of electric energy when both start at the same time, which is not environmentally friendly;

In this regard, we have proposed a power plant desulfurizer based on high-calcium limestone and its preparation method to solve the above problems.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a power plant desulfurizer based on high-calcium limestone and a preparation method thereof, which solves the technical problems mentioned in the background art.

In order to achieve the above object, the present invention is realized through the following technical solutions: the preparation method of the power plant desulfurizer based on high-calcium limestone specifically comprises the following steps:

Step 1. Grinding high-calcium limestone raw materials, activated carbon raw materials, and magnesium carbonate raw materials into fine particles through a grinder, then stirring and mixing the obtained three raw material particles, and then adding water to mix to form lime mixed slurry;

Step 2, pour the lime mixed slurry into the filter equipment, utilize the filter equipment to filter out the residue in the lime mixed slurry, and obtain the lime mixed slurry filtrate;

Step 3: Put the lime mixed pulp filtrate into the granulator and granulate to obtain desulfurizer granules, and further put the prepared desulfurizer granules into a drying box for drying to obtain finished products, which are collected and processed in the production line Package.

Preferably, the filter equipment includes a filter box, one side of the filter box is rotatably connected with a box door, the top of the filter box is connected to a feeding hopper, and the bottom of the filter box is fixed with four support rods, so The bottom of the filter box is connected with a liquid outlet pipe, the inside of the liquid outlet pipe is provided with a valve, and the other side of the filter box is provided with a discharge port, and a side door is connected to the discharge port by rotation. A filter plate is slidably connected between the inner walls of the box, a pushing assembly is set above the filter plate, a vibration mechanism is set below the filter plate, a transmission component is set on one side of the filter box, and the vibration mechanism The transmission component is linked with the pushing component.

Preferably, the vibrating mechanism includes four fixing plates on both sides of the inner wall of the filter box, the tops of the four fixing plates are fixed with vertical pipes, and the tops of the four vertical pipes are all slidably connected with vertical rods. The bottom ends of the four vertical rods all pass through the vertical pipe and extend to the inside of the vertical pipe, and the bottom ends of the four vertical rods are all fixed with circular plates.

Preferably, the outer surfaces of the four circular plates are all slidably connected to the inner surface of the vertical pipe, first springs are fixed between the bottoms of the four circular plates and the bottom of the inner wall of the vertical pipe, and the four vertical plates The top ends of the rods are all fixed to the bottom of the filter plate, and a rotating rod is connected between the opposite sides of the inner wall of the filter box, and cams are fixed on both sides of the outer surface of the rotating rod, and the outer surfaces of the two cams are Contacting and extruding with the bottom of the filter plate, one end of the rotating rod penetrates the filter box and extends to the outside of the filter box.

Preferably, the pusher assembly includes a screw rod that is rotatably connected between the opposite sides of the inner wall of the filter box, a cross bar is fixed between the opposite sides of the inner wall of the filter box, and a moving seat is arranged above the filter plate, so that One end of the screw rod and the cross bar both pass through the moving base and extend to the outside of the moving base, and the outer surface of the screw rod is threadedly connected with the inner surface of the moving base.

Preferably, the outer surface of the cross bar is slidably connected to the inner surface of the moving seat, one end of the screw rod passes through the filter box and extends to the outside of the filter box, and the bottom of the moving seat is slidably connected with a cleaning push plate, so The bottom of the cleaning push plate is in contact with the top of the filter plate for extrusion, the bottom of the cleaning push plate is slidingly connected to the top of the filter plate, and a compression lock assembly is arranged between the cleaning push plate and the moving seat.

Preferably, the compression lock assembly includes a pull rod slidably connected to the top of the moving seat, the bottom end of the pull rod runs through the moving seat and extends to the inside of the moving seat, the bottom end of the pull rod is connected to the top of the cleaning push plate fixed, the outer surface of the pull rod is fixed with a second spring.

Preferably, the top end of the second spring is fixed to the inner wall of the moving seat, the bottom end of the second spring is fixed to the top of the cleaning push plate, a slot is provided on one side of the cleaning push plate, and the moving seat One side of the plug is slidably connected with an inserting block, and one side of the inserting block passes through the moving seat and extends to the inside of the slot.

Preferably, the transmission assembly includes a mounting plate fixed on one side of the filter box, a driving motor is fixed on the top of the mounting plate, a first pulley is fixed on the outer surface of the rotating rod, and one end of the screw rod is fixed The second pulley is connected through a belt transmission between the first pulley and the second pulley, and the output end of the driving motor is fixed to one end of the rotating rod through a coupling.

The invention also discloses a power plant desulfurizer based on high-calcium limestone, which is obtained by the above-mentioned preparation method and preparation equipment.

Beneficial effect

The invention provides a power plant desulfurizer based on high-calcium limestone and a preparation method thereof. Compared with the prior art, it has the following beneficial effects:

(1) The power plant desulfurizer based on high-calcium limestone and the preparation method thereof realize the up-and-down reciprocating vibration of the filter plate through the setting of the vibration mechanism, thereby realizing the vibration filtration of the lime mixed slurry on the filter plate, and the degree of automation is high.

(2) The power plant desulfurizer based on high-calcium limestone and its preparation method, through the setting of the pusher assembly, not only realizes the automatic cleaning of the filter residue, but also cleans up the push plate compared to using extrusion blades for slag discharge The bottom of the filter plate and the top of the filter plate are both flat, which can completely push out the filter residue and improve the cleaning effect.

(3), the high-calcium limestone-based power plant desulfurizer and its preparation method realize the locking and release of the cleaning push plate by pressing the lock assembly, and the cleaning push plate can be released when the filter residue needs to be cleaned. Lock and clean the push plate before completion, so as not to interfere with the filtration process.

(4) The power plant desulfurizer based on high-calcium limestone and its preparation method, through the cooperative use of the pusher assembly and the vibration mechanism, have completed the filtering and slag discharge functions, and the pusher assembly and the vibration mechanism are carried out through the setting of the transmission assembly Linkage, only by setting a driving motor, the pusher assembly and the vibrating mechanism can work at the same time, which reduces the manufacturing cost, reduces the power consumption, and is more environmentally friendly.

Description of drawings

Fig. 1 is the perspective view of the external structure of the present invention;

Fig. 2 is the open state figure of box door of the present invention;

Fig. 3 is the open state figure of side door of the present invention;

Fig. 4 is the three-dimensional view of pusher assembly, vibrating mechanism and transmission assembly of the present invention;

Fig. 5 is a separation state view of the pusher assembly, filter plate and vibrating mechanism of the present invention;

Fig. 6 is a sectional view of the standpipe of the present invention;

Fig. 7 is a sectional view of the moving seat of the present invention.

In the figure: 1, filter box; 2, box door; 3, feed hopper; 4, support rod; 5, liquid outlet pipe; 6, valve; 7, discharge port; 8, side door; 9, filter plate; 10 , pusher assembly; 11, vibration mechanism; 12, transmission assembly; 13, compression lock assembly; 111, fixed plate; 112, vertical pipe; 113, vertical rod; 114, circular plate; 115, first spring; , rotating rod; 117, cam; 101, screw mandrel; 102, cross bar; 103, moving seat; 104, cleaning push plate; 131, pull rod; 132, second spring; 133, slot; 134, insert block; 121 , mounting plate; 122, drive motor; 123, first pulley; 124, second pulley; 125, belt.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiments of the present invention provide two technical solutions, specifically including the following embodiments:

Example 1

Please refer to Fig. 1-6, the preparation method of the power plant desulfurizer based on high-calcium limestone specifically includes the following steps:

Step 1. Grinding high-calcium limestone raw materials, activated carbon raw materials, and magnesium carbonate raw materials into fine particles through a grinder, then stirring and mixing the obtained three raw material particles, and then adding water to mix to form lime mixed slurry;

Step 2, pour the lime mixed slurry into the filter equipment, utilize the filter equipment to filter out the residue in the lime mixed slurry, and obtain the lime mixed slurry filtrate;

Step 3: Put the lime mixed pulp filtrate into the granulator and granulate to obtain desulfurizer granules, and further put the prepared desulfurizer granules into a drying box for drying to obtain finished products, which are collected and processed in the production line Package.

The filter equipment includes a filter box 1, one side of the filter box 1 is rotatably connected with a box door 2, the top of the filter box 1 is connected with a feed hopper 3, the bottom of the filter box 1 is fixed with four support rods 4, and the bottom of the filter box 1 Connected with a liquid outlet pipe 5, the lime mixed slurry filtrate is discharged through the liquid outlet pipe 5, the inside of the liquid outlet pipe 5 is provided with a valve 6, and the other side of the filter box 1 is opened with a discharge port 7, and the discharge port 7 is rotated The side door 8 is connected, open the side door 8, the filter residue discharge port 7 is connected to the filter plate 9 by sliding between the inner walls of the filter box 1, the pusher assembly 10 is set above the filter plate 9, and the vibration filter plate 9 is set below the filter plate 9. As for the mechanism 11, a transmission assembly 12 is provided on one side of the filter box 1, and the vibration mechanism 11 is linked with the pushing assembly 10 through the transmission assembly 12.

The vibrating mechanism 11 includes four fixed plates 111 on both sides of the inner wall of the filter box 1, the tops of the four fixed plates 111 are fixed with vertical pipes 112, and the tops of the four vertical pipes 112 are all slidably connected with vertical rods 113. The bottom ends of the rods 113 all pass through the vertical tube 112 and extend to the inside of the vertical tube 112 , and the bottom ends of the four vertical rods 113 are all fixed with circular plates 114 .

The outer surfaces of the four circular plates 114 are all slidably connected to the inner surface of the vertical pipe 112, the first springs 115 are fixed between the bottoms of the four circular plates 114 and the bottom of the inner wall of the vertical pipe 112, and the tops of the four vertical rods 113 Both are fixed with the bottom of the filter plate 9, and the opposite sides of the filter box 1 inner wall are rotatably connected with a rotating rod 116, and both sides of the outer surface of the rotating rod 116 are fixed with cams 117, and the outer surfaces of the two cams 117 are connected to the filter plate. The bottom of the filter plate 9 is contacted and squeezed, and one end of the rotating rod 116 penetrates the filter box 1 and extends to the outside of the filter box 1. Through the setting of the vibration mechanism 11, the filter plate 9 reciprocates up and down, thereby realizing the limestone on the filter plate 9. Vibration filtration of mixed slurry is highly automated.

The pushing assembly 10 includes a screw rod 101 rotatably connected between the opposite sides of the filter box 1 inner wall, a cross bar 102 is fixed between the opposite sides of the filter box 1 inner wall, a moving seat 103 is arranged above the filter plate 9, and the screw rod 101 and one end of the cross bar 102 both pass through the moving base 103 and extend to the outside of the moving base 103 , and the outer surface of the screw rod 101 is threadedly connected with the inner surface of the moving base 103 .

The outer surface of the cross bar 102 is slidingly connected with the inner surface of the moving seat 103, and one end of the screw mandrel 101 runs through the filter box 1 and extends to the outside of the filter box 1, and the bottom of the moving seat 103 is slidingly connected with a cleaning push plate 104, and the cleaning push plate The bottom of 104 is contacted and extruded with the top of filter plate 9, and the bottom of cleaning push plate 104 is slidably connected with the top of filter plate 9. A compression lock assembly 13 is arranged between cleaning push plate 104 and moving seat 103, and the push plate 104 is cleaned by pushing The arrangement of the component 10 not only realizes the automatic cleaning of the filter residues, but also compares the use of extrusion paddles for slag discharge, the bottom of the cleaning push plate 104 and the top of the filter plate 9 are both flat, which can completely push out the filter residues , which improves the cleaning effect.

The transmission assembly 12 includes a mounting plate 121 fixed on one side of the filter box 1, and a driving motor 122 is fixed on the top of the mounting plate 121. The driving motor 122 is a three-phase asynchronous motor, which can carry out positive and negative rotation and is controlled by an external switch. The power supply is electrically connected, the outer surface of the rotating rod 116 is fixed with a first pulley 123, and one end of the screw rod 101 is fixed with a second pulley 124, the first pulley 123 and the second pulley 124 are connected by a belt 125, and the driving motor 122 The output end of the shaft coupling is fixed to one end of the rotating rod 116, and the filtering and slag discharge functions are completed through the cooperative use of the pushing assembly 10 and the vibrating mechanism 11, and the pushing assembly 10 and the vibrating mechanism 11 for linkage, only by setting a driving motor 122, the pusher assembly 10 and the vibrating mechanism 11 can be made to work at the same time, which reduces manufacturing costs, reduces power consumption, and is more environmentally friendly.

The invention also discloses a power plant desulfurizer based on high-calcium limestone, which is obtained by using the above-mentioned preparation method and preparation equipment;

Example 2

On the basis of Example 1, see Figure 7

The compression lock assembly 13 includes a pull rod 131 that is slidably connected to the top of the movable seat 103, the bottom end of the pull rod 131 runs through the movable seat 103 and extends to the inside of the movable seat 103, and the bottom end of the pull rod 131 is fixed to the top of the cleaning push plate 104 , the outer surface of the pull rod 131 is fixed with a second spring 132 .

The top of the second spring 132 is fixed with the inwall of the movable seat 103, and the bottom of the second spring 132 is fixed with the top of the cleaning push pedal 104, and one side of the cleaning push pedal 104 is provided with a slot 133, and one side of the movable seat 103 slides Connected with an insert block 134, one side of the insert block 134 runs through the moving seat 103 and extends to the inside of the slot 133. By pressing the lock assembly 13, the locking and release of the cleaning push plate 104 is realized, and it can be cleaned when needed. Release the cleaning push plate 104 when filtering residue, and lock the cleaning push plate 104 before the filtration is not completed, so as not to interfere with the filtration process.

At the same time, the content not described in detail in this specification belongs to the prior art known to those skilled in the art.

When working, pour the lime mixed slurry into the feed hopper 3, the lime mixed slurry falls on the top of the filter plate 9, and further start the driving motor 122, so that the driving motor 122 drives the rotary rod 116 to rotate, and the rotary rod 116 drives two cams 117 at the same time Rotate, at the same time the two cams 117 drive the filter plate 9 to vibrate up and down, the filter plate 9 drives the four vertical rods 113 to slide up and down along the inner surface of the vertical tube 112, and the vertical rods 113 drive the circular plate 114 to repeatedly stretch the first spring 115, When the driving motor 122 drives the rotating rod 116 to rotate, it drives the first belt pulley 123 to rotate, and simultaneously the belt 125 drives the second belt pulley 124 to rotate, and then the second belt pulley 124 drives the screw mandrel 101 to rotate, and the screw mandrel 101 drives the moving seat 103 along the The outer surface of the cross bar 102 slides to the right. When the filtration is completed, the plug 134 is pulled out, so that the plug 134 slides out of the slot 133. At this time, the second spring 132 in a compressed state resets and drives the cleaning push plate 104 to slide downward. Finally, the cleaning push plate 104 is in contact with the top of the filter plate 9. When the moving seat 103 drives the cleaning push plate 104 to move to the right, the cleaning push plate 104 can push the filter residue on the top of the filter plate 9 to move to the right, and the side door 8 is opened. The filter residue is pushed out, and when cleaning is not required, pull up the pull bar 131, and then insert the plug 134 to realize locking, open the valve 6, and the lime mixed slurry filtrate is discharged from the outlet pipe 5.

The embodiments of the invention have been described in detail above, but the content described is only a preferred embodiment of the invention, and cannot be considered as limiting the implementation scope of the invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (10)

1. The method for preparing desulfurizer for power plants based on high-calcium limestone is characterized in that: it specifically comprises the following steps: Step 1. Grinding high-calcium limestone raw materials, activated carbon raw materials, and magnesium carbonate raw materials into fine particles through a grinder, then stirring and mixing the obtained three raw material particles, and then adding water to mix to form lime mixed slurry; Step 2, pour the lime mixed slurry into the filter equipment, utilize the filter equipment to filter out the residue in the lime mixed slurry, and obtain the lime mixed slurry filtrate; Step 3: Put the lime mixed pulp filtrate into the granulator and granulate to obtain desulfurizer granules, and further put the prepared desulfurizer granules into a drying box for drying to obtain finished products, which are collected and processed in the production line Package. 2. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 1, characterized in that: the filter equipment includes a filter box (1), and one side of the filter box (1) is rotatably connected with a box door (2), the top of the filter box (1) is connected with a feed hopper (3), the bottom of the filter box (1) is fixed with four support rods (4), the bottom of the filter box (1) A liquid outlet pipe (5) is connected, and a valve (6) is arranged inside the liquid outlet pipe (5), and a discharge port (7) is provided on the other side of the filter box (1). A side door (8) is rotatably connected to the feed port (7), a filter plate (9) is slidably connected between the inner walls of the filter box (1), and a pusher assembly (10) is arranged above the filter plate (9). ), the bottom of the filter plate (9) is provided with a vibration mechanism (11), and one side of the filter box (1) is provided with a transmission assembly (12), and the vibration mechanism (11) passes through the transmission assembly (12) Carry out linkage with pushing material assembly (10). 3. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 2, characterized in that: the vibration mechanism (11) includes four fixed plates (111) on both sides of the filter box (1) inner wall, The tops of the four fixed plates (111) are all fixed with vertical pipes (112), and the tops of the four vertical pipes (112) are all slidably connected with vertical rods (113), and the four vertical rods (113) The bottom ends of the four vertical rods (113) all pass through the vertical tube (112) and extend to the inside of the vertical tube (112), and the bottom ends of the four vertical rods (113) are all fixed with circular plates (114). 4. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 3, characterized in that: the outer surfaces of the four circular plates (114) are all slidably connected with the inner surfaces of the standpipes (112), and the four A first spring (115) is fixed between the bottom of the circular plate (114) and the bottom of the inner wall of the vertical pipe (112), and the tops of the four vertical bars (113) are connected to the bottom of the filter plate (9). The bottom is fixed, and a rotary rod (116) is rotatably connected between the opposite sides of the inner wall of the filter box (1), and cams (117) are fixed on both sides of the outer surface of the rotary rod (116). The outer surfaces of (117) all contact and extrude with the bottom of the filter plate (9), and one end of the rotating rod (116) penetrates the filter box (1) and extends to the outside of the filter box (1). 5. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 4, characterized in that: the pushing assembly (10) comprises a screw rod ( 101), a crossbar (102) is fixed between the opposite sides of the inner wall of the filter box (1), a moving seat (103) is arranged above the filter plate (9), and the screw rod (101) and the crossbar One end of the rod (102) passes through the moving seat (103) and extends to the outside of the moving seat (103), and the outer surface of the screw rod (101) is threadedly connected with the inner surface of the moving seat (103). 6. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 5, characterized in that: the outer surface of the crossbar (102) is slidingly connected to the inner surface of the moving seat (103), and the screw rod One end of (101) runs through the filter box (1) and extends to the outside of the filter box (1), and the bottom of the mobile seat (103) is slidingly connected with a cleaning push plate (104), and the cleaning push plate (104) The bottom contacts and extrudes with the top of the filter plate (9), and the bottom of the cleaning push plate (104) is slidably connected with the top of the filter plate (9). A compression lock assembly (13) is provided. 7. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 6, characterized in that: the compression lock assembly (13) includes a pull rod (131) that is slidably connected to the top of the moving seat (103) , the bottom end of the pull rod (131) runs through the moving seat (103) and extends to the inside of the moving seat (103), the bottom end of the pull rod (131) is fixed to the top of the cleaning push plate (104), and the pull rod The outer surface of (131) is fixed with the second spring (132). 8. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 7, characterized in that: the top of the second spring (132) is fixed to the inner wall of the moving seat (103), and the second spring ( 132) is fixed to the top of the cleaning push plate (104), one side of the cleaning push plate (104) is provided with a slot (133), and one side of the moving seat (103) is slidably connected with a plug (134), one side of the insert block (134) passes through the moving seat (103) and extends to the inside of the slot (133). 9. The method for preparing desulfurizer for power plants based on high-calcium limestone according to claim 5, characterized in that: the transmission assembly (12) includes a mounting plate (121) fixed on one side of the filter box (1), the The top of the mounting plate (121) is fixed with a driving motor (122), the outer surface of the rotating rod (116) is fixed with a first pulley (123), and one end of the screw mandrel (101) is fixed with a second pulley (124). ), the first pulley (123) and the second pulley (124) are connected through a belt (125) transmission, and the output end of the drive motor (122) is fixed to one end of the rotating rod (116) through a coupling . 10. A power plant desulfurizer based on high-calcium limestone, characterized in that it is obtained by the above-mentioned preparation method and preparation equipment.

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