A desulfurization tower with alkali-adding and filtering structure

Abstract

The utility model provides a desulfurization tower with an alkali adding and filtering structure, comprising: a desulfurization tower, an exhaust pipe is arranged on the top of the desulfurization tower, an air inlet pipe is arranged on the side wall of the desulfurization tower, a liquid discharge pipe arranged below the air inlet pipe is arranged on the side wall of the desulfurization tower, a spray pipe arranged above the air inlet pipe is arranged inside the desulfurization tower, a plurality of nozzles are arranged at the bottom of the spray pipe, and a delivery pipe connected with the spray pipe is arranged on the side wall of the desulfurization tower; a mixing box for preparing alkali solution is arranged at one end of the liquid discharge pipe away from the desulfurization tower, a guide pipe is arranged on the side wall of the mixing box opposite to the liquid discharge pipe, a delivery pump connected with the delivery pipe is arranged on the top of the guide pipe, a soda ash feed hopper and a water feed hopper are arranged in sequence on the top of the mixing box, and a filter assembly for filtering liquid flowing in from the soda ash feed hopper and the water feed hopper is arranged inside the mixing box. The utility model has reasonable structure, good anti-clogging effect and good exhaust gas treatment emission effect.

Description

Technical Field

[0001] The utility model relates to a desulfurization tower, in particular to a desulfurization tower with an alkali adding and filtering structure. Background Art

[0002] The desulfurization tower is a tower-type equipment for desulfurization of industrial waste gas. The desulfurization tower was originally built with granite and was most widely used. It uses the principle of water film desulfurization and dust removal, and is also known as granite water film desulfurization dust collector, or granite water film desulfurization dust collector.

[0003] In the prior art, when the existing desulfurization tower is in use, when treating sulfur dioxide tail gas emissions, it is necessary to use soda ash and water to mix to form alkaline water, and then send it to the inside of the desulfurization tower to neutralize with the tail gas so that the exhaust gas meets the emission standards. In this process, there are certain debris such as ropes, plastics, etc. in the soda ash. In the process of entering the desulfurization tower through the pump body and reacting with the exhaust gas, because there are a large number of filter balls and water baffles in the desulfurization tower to filter the gas, the debris will block the filter balls and the water baffles, the anti-blocking effect is not good, and a lot of time is wasted on cleaning, affecting the emission effect of the exhaust gas treatment. Now there is an urgent need for a desulfurization tower with an alkali filtration structure to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model aims to provide a desulfurization tower with an alkali-adding filtering structure to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure, good anti-clogging effect and good exhaust gas treatment emission effect.

[0005] In order to achieve the above object, the utility model is implemented through the following technical scheme: a desulfurization tower with an alkali-adding and filtering structure, comprising:

[0006] A desulfurization tower, wherein an exhaust pipe is arranged on the top of the desulfurization tower, an air inlet pipe is arranged on the side wall of the desulfurization tower, a liquid discharge pipe arranged below the air inlet pipe is arranged on the side wall of the desulfurization tower, a spray pipe arranged above the air inlet pipe is arranged inside the desulfurization tower, a plurality of nozzles are arranged at the bottom of the spray pipe, a delivery pipe connected to the spray pipe is arranged on the side wall of the desulfurization tower, a water retaining plate arranged below the nozzle is arranged inside the desulfurization tower, a plurality of filter balls are evenly embedded on the top of the water retaining plate, and an air guide hole connected to the filter balls is opened at the bottom of the water retaining plate;

[0007] A mixing box for preparing alkali solution is arranged at one end of the liquid discharge pipe away from the desulfurization tower, a guide pipe is arranged on the side wall of the mixing box opposite to the liquid discharge pipe, a delivery pump connected to the delivery pipe is arranged on the top of the guide pipe, a soda ash feed hopper and a water feed hopper are arranged on the top of the mixing box in sequence, and a filter assembly for filtering the liquid flowing in from the soda ash feed hopper and the water feed hopper is arranged inside the mixing box;

[0008] The filter assembly comprises a sealing plate arranged on the side wall of the mixing box, a grid plate arranged inside the mixing box is arranged on the side wall of the sealing plate, and a filter net is arranged inside the grid plate.

[0009] Furthermore, a sealing groove matching the sealing plate is provided on the side wall of the mixing box, a guide groove communicating with the sealing groove and matching the grid plate is provided inside the mixing box, and the vertical cross-sectional area of ​​the sealing groove is larger than the vertical cross-sectional area of ​​the guide groove.

[0010] Furthermore, a force application groove is provided on the side wall of the sealing plate.

[0011] Furthermore, a first valve is provided on the lower side of the annular side of the soda ash feed hopper, a second valve is provided on the lower side of the annular side of the water feed hopper, a PH sensor for detecting the PH of the alkali solution is provided on the side wall of the mixing box, a display screen connected to the PH sensor is provided on the top of the mixing box, a PLC controller for displaying the data detected by the PH sensor on the display screen is provided inside the display screen, a third valve is provided on the side walls of the discharge pipe and the guide pipe, and the first valve, the second valve, the third valve and the delivery pump are respectively connected to the PLC controller.

[0012] Furthermore, a stirring motor is arranged on the side wall of the mixing box, and a stirring rod arranged inside the mixing box is arranged on the output shaft of the stirring motor, and the stirring rod is arranged below the sealing plate.

[0013] Furthermore, a support plate is provided on the side wall of the mixing box, a delivery pump is placed on the top of the support plate, and a guide pipe passes through the support plate and is connected to the delivery pump.

[0014] Furthermore, a liquid discharge pipe is arranged on the side wall of the mixing box, and a liquid discharge valve is arranged on the side wall of the liquid discharge pipe.

[0015] Furthermore, the drain pipe is placed above the filter assembly.

[0016] According to the utility model, a desulfurization tower with an alkali-adding filtering structure prepares an alkaline alkali solution by using a soda ash feed hopper and a water feed hopper to respectively deliver soda ash and water into a mixing box, and filters the impurities in the soda ash and water under the action of the filter mesh in the filtering assembly to prevent the impurities from entering the desulfurization tower along the delivery pump, delivery pipe, spray pipe and nozzle and causing blockage to the filter balls and water baffles in the desulfurization tower, thereby enhancing the anti-blockage effect and avoiding the need to spend a lot of time cleaning the blocked filter balls and water baffles, thereby enhancing the emission effect of the exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1This is a schematic structural diagram of a desulfurization tower with an alkali-adding and filtering structure according to an embodiment of the utility model;

[0019] Figure 2 According to an embodiment of the present utility model Figure 1 A magnified view of middle;

[0020] Figure 3 It is a three-dimensional diagram of a mixing box in a desulfurization tower with an alkali-adding and filtering structure according to an embodiment of the utility model;

[0021] Figure 4 It is a three-dimensional diagram of the connection between the mixing box and the filtering assembly in a desulfurization tower with an alkali-adding filtering structure according to one embodiment of the utility model;

[0022] Figure 5 A schematic diagram of a control system according to an embodiment of the utility model;

[0023] In the figure: 1. desulfurization tower; 101. water retaining plate; 102. filter ball; 103. air guide hole; 2. exhaust pipe; 3. spray pipe; 31. nozzle; 4. delivery pipe; 5. soda ash feed hopper; 51. first valve; 6. water feed hopper; 61. second valve; 7. mixing box; 71. sealing groove; 72. guide groove; 8. delivery pump; 9. support plate; 10. guide pipe; 11. stirring rod; 12. stirring motor; 13. filter assembly; 131. sealing plate; 1311. force groove; 132. grid plate; 133. filter net; 14. drain pipe; 15. air inlet pipe; 16. PH sensor; 17. display screen; 18. discharge pipe; 181. discharge valve. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1 As shown, the utility model provides a technical solution: a desulfurization tower with an alkali-adding and filtering structure, comprising:

[0026] A desulfurization tower 1, wherein an exhaust pipe 2 is arranged on the top of the desulfurization tower 1, an air inlet pipe 15 is arranged on the side wall of the desulfurization tower 1, a liquid discharge pipe 14 arranged below the air inlet pipe 15 is arranged on the side wall of the desulfurization tower 1, a spray pipe 3 arranged above the air inlet pipe 15 is arranged inside the desulfurization tower 1, a plurality of nozzles 31 are arranged at the bottom of the spray pipe 3, a delivery pipe 4 connected to the spray pipe 3 is arranged on the side wall of the desulfurization tower 1, a water retaining plate 101 arranged below the nozzle 31 is arranged inside the desulfurization tower 1, a plurality of filter balls 102 are evenly embedded on the top of the water retaining plate 101, and an air guide hole 103 connected to the filter ball 102 is opened at the bottom of the water retaining plate 101;

[0027] A mixing box 7 for preparing alkali solution is arranged at one end of the liquid discharge pipe 14 away from the desulfurization tower 1, a flow guide pipe 10 is arranged on a side wall of the mixing box 7 opposite to the liquid discharge pipe 14, a delivery pump 8 connected to the delivery pipe 4 is arranged on the top of the flow guide pipe 10, a soda ash feed hopper 5 and a water feed hopper 6 are arranged in sequence on the top of the mixing box 7, and a filter assembly 13 for filtering the liquid flowing in from the soda ash feed hopper 5 and the water feed hopper 6 is arranged inside the mixing box 7;

[0028] The filter assembly 13 includes a sealing plate 131 arranged on the side wall of the mixing box 7, and the side wall of the sealing plate 131 is provided with a grid plate 132 placed inside the mixing box 7, and a filter screen 133 is arranged inside the grid plate 132. This design uses a soda ash feed hopper 5 and a water feed hopper 6 to respectively deliver soda ash and water to the inside of the mixing box 7, thereby preparing an alkaline alkali solution. Under the action of the filter screen 133 in the filter assembly 13, impurities in the soda ash and water are filtered to prevent impurities from entering and passing through the delivery pump 8, the delivery pipe 4, the spray pipe 3 and the nozzle 31, and entering the desulfurization tower 1 to cause blockage of the filter ball 102 and the water baffle 101 in the desulfurization tower 1, thereby enhancing the anti-blockage effect and avoiding the need to spend a lot of time cleaning the blocked filter ball 102 and the water baffle 101, thereby enhancing the emission effect of the exhaust gas treatment.

[0029] Reference Figure 2 and Figure 4 A sealing groove 71 matching the sealing plate 131 is provided on the side wall of the mixing box 7, and a guide groove 72 connected to the sealing groove 71 and matching the grid plate 132 is provided inside the mixing box 7. The vertical cross-sectional area of ​​the sealing groove 71 is larger than the vertical cross-sectional area of ​​the guide groove 72. This design facilitates the guidance of the grid plate 132 by using the guide groove 72. By using the sealing groove 71, the sealing performance of the connection is improved. When it is necessary to clean the impurities on the filter screen 133, force is applied to the sealing plate 131 to make the sealing plate 131 detach from the sealing groove 71, thereby driving the grid plate 132 to detach from the inside of the mixing box 7 along the guide groove 72, and then the grid plate 132 is taken out to clean the impurities filtered on the filter screen 133 thereon.

[0030] Reference Figure 3 and Figure 4 A force-applying groove 1311 is provided on the side wall of the sealing plate 131 . This design facilitates the sealing plate 131 to be separated from the interior of the sealing groove 71 by using the force-applying groove 1311 .

[0031] Reference Figure 1 and Figure 5A first valve 51 is provided on the lower side of the annular side of the soda ash feed hopper 5, a second valve 61 is provided on the lower side of the annular side of the water feed hopper 6, a PH sensor 16 for detecting the PH of the alkali solution is provided on the side wall of the mixing box 7, a display screen 17 connected to the PH sensor 16 is provided on the top of the mixing box 7, a PLC controller for displaying the data detected by the PH sensor 16 on the display screen 17 is provided inside the display screen 17, and a third valve is provided on the side walls of the discharge pipe 14 and the guide pipe 10. This design facilitates the control of the flow rates of soda ash and water by using the first valve 51 and the second valve 61, and at the same time closes the third valve, and observes the PH value of the alkali solution inside the mixing box 7 detected by the PH sensor 16 through the display screen 17, thereby adjusting the PH value. When the adjustment is completed, the third valve is opened, wherein the PLC controller displays the data detected by the PH sensor 16 on the display screen 17, which is a prior art, and the first valve 51, the second valve 61, the third valve and the delivery pump 8 are respectively connected to the PLC controller.

[0032] Reference Figure 1 and Figure 3 A stirring motor 12 is provided on the side wall of the mixing box 7, and a stirring rod 11 is provided on the output shaft of the stirring motor 12 and is placed inside the mixing box 7. The stirring rod 11 is placed below the sealing plate 131. This design uses the stirring motor 12 to drive the stirring rod 11 to rotate to mix soda ash and water to prepare alkaline water, so that the alkaline water is fully mixed, the uniformity of the mixing is improved, and the accuracy of the pH value detected by the pH sensor 16 is improved. A sealed bearing is provided at the connection between the output shaft of the stirring motor 12 and the mixing box 7.

[0033] Reference Figure 3 and Figure 4 A support plate 9 is provided on the side wall of the mixing box 7, and the delivery pump 8 is placed on the top of the support plate 9. The guide pipe 10 passes through the support plate 9 and is connected to the delivery pump 8. This design facilitates the support of the delivery pump 8 by using the support plate 9, thereby improving the stability of the connection. A drain pipe 18 is provided on the side wall of the mixing box 7, and a drain valve 181 is provided on the side wall of the drain pipe 18. This design facilitates the outflow of alkali solution from the drain pipe 18 by opening the drain valve 181, thereby facilitating the replacement of new alkali solution.

[0034] Reference Figure 1 The drain pipe 14 is placed above the filter assembly 13 . This design facilitates filtering impurities flowing out of the drain pipe 14 and prevents impurities from entering the delivery pump 8 .

[0035] Reference Figure 1-Figure 5As an embodiment of the utility model: when it is necessary to prepare alkali solution and transport it to the inside of the desulfurization tower 1, the staff first closes the third valve, and then uses the soda ash feed hopper 5 and the water feed hopper 6 to respectively feed soda ash and water into the mixing box 7, and then controls the flow rate of soda ash and water according to the first valve 51 and the second valve 61, and detects the pH of the alkali solution mixed with soda ash and water through the PH sensor 16 and displays it on the display screen 17 through the PLC controller, so as to prepare the alkali solution with a suitable alkaline pH value, and at the same time, the stirring motor 12 is driven to drive the stirring rod 11 to rotate to stir the alkali solution, thereby improving the mixing effect and the detection accuracy of the PH sensor 16, and the soda ash is stirred under the action of the filter screen 133 in the filter assembly 13. , filter impurities in the water to prevent impurities from entering and passing through the delivery pump 8, the delivery pipe 4, the spray pipe 3 and the nozzle 31, and entering the desulfurization tower 1 to block the filter ball 102 and the water baffle 101 in the desulfurization tower 1, thereby enhancing the anti-blockage effect and avoiding the need to spend a lot of time cleaning the blocked filter ball 102 and the water baffle 101, thereby enhancing the emission effect of the exhaust gas treatment. After the alkali solution is prepared, open the third valve and start the delivery pump 8 at the same time, and let the alkali solution in the mixing box 7 pass through the guide pipe 10, the delivery pump 8, the delivery pipe 4, the spray pipe 3 in turn, and finally spray water mist from the nozzle 31 to neutralize the exhaust gas entering from the air inlet pipe 15. The alkali solution flows back to the mixing box 7 through the drain pipe 14 and circulates in turn.

[0036] When it is necessary to clean the impurities, force is applied to the force groove 1311 to make the sealing plate 131 disengage from the sealing groove 71, thereby driving the grid plate 132 to disengage from the interior of the mixing box 7 along the guide groove 72, and then the grid plate 132 is taken out to clean the impurities filtered on the filter screen 133 thereon.

[0037] When the pH sensor 16 detects that the alkali solution inside the mixing box 7 is lower than the set value, the PLC controls the first valve 51 and the second valve 61 to open to add soda ash and water into the mixing box 7 to adjust the pH of the alkali solution, thereby ensuring the neutralization reaction of the alkali solution on the waste gas treatment, thereby improving the practicality of the utility model.

[0038] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A desulfurization tower with an alkali-adding and filtering structure, comprising: A desulfurization tower (1), wherein an exhaust pipe (2) is arranged at the top of the desulfurization tower (1), an air inlet pipe (15) is arranged at the side wall of the desulfurization tower (1), a liquid discharge pipe (14) arranged below the air inlet pipe (15) is arranged at the side wall of the desulfurization tower (1), a spray pipe (3) arranged above the air inlet pipe (15) is arranged inside the desulfurization tower (1), a plurality of nozzles (31) are arranged at the bottom of the spray pipe (3), a delivery pipe (4) connected to the spray pipe (3) is arranged at the side wall of the desulfurization tower (1), a water retaining plate (101) arranged below the nozzle (31) is arranged inside the desulfurization tower (1), a plurality of filter balls (102) are evenly embedded at the top of the water retaining plate (101), and an air guide hole (103) connected to the filter balls (102) is opened at the bottom of the water retaining plate (101); It is characterized in that A mixing box (7) for preparing alkali solution is arranged at one end of the liquid discharge pipe (14) away from the desulfurization tower (1); a flow guide pipe (10) is arranged on a side wall of the mixing box (7) opposite to the liquid discharge pipe (14); a delivery pump (8) connected to the delivery pipe (4) is arranged on the top of the flow guide pipe (10); a soda ash feed hopper (5) and a water feed hopper (6) are arranged in sequence on the top of the mixing box (7); and a filter assembly (13) for filtering liquid flowing in from the soda ash feed hopper (5) and the water feed hopper (6) is arranged inside the mixing box (7); The filter assembly (13) comprises a sealing plate (131) arranged on the side wall of the mixing box (7), the side wall of the sealing plate (131) is provided with a grid plate (132) placed inside the mixing box (7), and a filter screen (133) is arranged inside the grid plate (132).

2. A desulfurization tower with an alkali-adding and filtering structure according to claim 1, characterized in that: The side wall of the mixing box (7) is provided with a sealing groove (71) matching the sealing plate (131), and the interior of the mixing box (7) is provided with a guide groove (72) connected to the sealing groove (71) and matching the grid plate (132), and the vertical cross-sectional area of ​​the sealing groove (71) is larger than the vertical cross-sectional area of ​​the guide groove (72).

3. The desulfurization tower with alkali-adding and filtering structure according to claim 1, characterized in that: The side wall of the sealing plate (131) is provided with a force application groove (1311).

4. The desulfurization tower with alkali-adding and filtering structure according to claim 1, characterized in that: A first valve (51) is provided on the lower side of the annular side of the soda ash feed hopper (5), a second valve (61) is provided on the lower side of the annular side of the water feed hopper (6), a pH sensor (16) for detecting the pH of the alkali solution is provided on the side wall of the mixing box (7), a display screen (17) connected to the pH sensor (16) is provided on the top of the mixing box (7), a PLC controller for displaying data detected by the pH sensor (16) on the display screen (17) is provided inside the display screen (17), a third valve is provided on the side walls of the discharge pipe (14) and the guide pipe (10), and the first valve (51), the second valve (61), the third valve and the delivery pump (8) are respectively connected to the PLC controller.

5. The desulfurization tower with alkali-adding and filtering structure according to claim 1, characterized in that: The side wall of the mixing box (7) is provided with a stirring motor (12), and the output shaft of the stirring motor (12) is provided with a stirring rod (11) disposed inside the mixing box (7), and the stirring rod (11) is disposed below the sealing plate (131).

6. The desulfurization tower with alkali-adding and filtering structure according to claim 1, characterized in that: The side wall of the mixing box (7) is provided with a support plate (9), the delivery pump (8) is placed on the top of the support plate (9), and the guide pipe (10) passes through the support plate (9) and is connected to the delivery pump (8).

7. The desulfurization tower with alkali-adding and filtering structure according to claim 1, characterized in that: The side wall of the mixing box (7) is provided with a liquid discharge pipe (18), and the side wall of the liquid discharge pipe (18) is provided with a liquid discharge valve (181).

8. The desulfurization tower with alkali-adding and filtering structure according to claim 1, characterized in that: The liquid discharge pipe (14) is placed above the filter assembly (13).

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