Demisting device for desulfurization

Abstract

The demisting device comprises a desulfurizing tower and an air inlet pipe, a demisting box is fixedly arranged at the top of the desulfurizing tower, an air outlet pipe is fixedly connected to the left side face of the demisting box, and the bottom of the air outlet pipe penetrates through the top of the desulfurizing tower to an inner cavity; the air outlet pipe is in flange connection with a fourth valve; an exhaust pipe is fixedly arranged at the top of the demisting box; the upper part of the right side surface of the demisting box is fixedly connected with a liquid filling pipe, the liquid filling pipe penetrates into the demisting box and is inserted with a liquid distribution device, and the bottom of the liquid distribution device is equidistantly provided with a plurality of second nozzles; the lower part of the right side surface of the demisting box is fixedly connected with a connecting pipe; the bottom of the connecting pipe is fixedly connected with the top of a liquid storage box. The liquid filling pipe is arranged outside the demisting box to fill the descaling liquid to the liquid distribution device, and the liquid distribution device is connected with the second spray head, so that the second spray head sprays the descaling liquid to each corner in the demisting box, a scale layer accumulated on the inner wall of the demisting box is chemically removed, normal operation of the desulfurization and demisting device is guaranteed, and the cleaning efficiency of the whole system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a demisting device, especially a desulfurization demisting device. BACKGROUND

[0002] Desulfurization refers to the process of removing sulfur from fuel before combustion and removing sulfur before flue gas emission, which is one of the important technical measures to control air pollution. With the acceleration of industrialization and the improvement of people's living standards, the demand for energy is increasing, and sulfur dioxide in coal-fired flue gas has become the main source of air pollution. Therefore, reducing sulfur dioxide emissions has become an urgent task for air environmental protection. The desulfurization and demisting device is a device for purifying sulfur dioxide and particulate matter in coal-fired flue gas, aiming to reduce the emission of air pollutants.

[0003] At present, the existing desulfurization and demisting device will cause the inner wall surface of the desulfurization and demisting device to adhere to a large amount of solid particles when performing demisting and desulfurization functions. In the long-term operation process, a scale layer is easily formed on the inner wall, which will affect the normal operation of the desulfurization and demisting device, significantly reduce the demisting effect, and further affect the efficiency and cleanliness of the entire system. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a desulfurization demisting device.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme of: a desulfurization demisting device, comprising a desulfurization tower and an air inlet pipe, the inside of the desulfurization tower is provided with an inner cavity, the left part of the air inlet pipe penetrates the lower part of the right side wall of the desulfurization tower into the inner cavity; a base is fixedly arranged at the bottom of the desulfurization tower, and a plurality of supporting legs are bolted to the bottom of the base;

[0006] A water pump and a liquid storage tank are fixedly arranged on the upper end surface of the base; the water outlet end of the water pump is fixedly connected to the bottom of a liquid inlet pipe, the top of the liquid inlet pipe penetrates the upper part of the right side wall of the desulfurization tower into the inner cavity, and a plurality of first spray heads are arranged at the bottom of the liquid inlet pipe in the inner cavity for spraying desulfurization liquid;

[0007] A demisting tank is fixedly arranged at the top of the desulfurization tower, an air outlet pipe is fixedly connected to the left side of the demisting tank, and the bottom of the air outlet pipe penetrates the top of the desulfurization tower into the inner cavity; a fourth valve is flange-connected to the air outlet pipe; an exhaust pipe is fixedly arranged at the top of the demisting tank for discharging waste gas after desulfurization;

[0008] The upper part of the right side of the demisting box is fixedly connected with a liquid filling pipe, a first valve is connected with the flange of the liquid filling pipe for controlling the filling of the descaling liquid, the liquid filling pipe penetrates into the inside of the demisting box and is connected with a liquid distribution device, a plurality of second spray heads are equidistantly arranged on the bottom of the liquid distribution device, the lower part of the right side of the demisting box is fixedly connected with a connecting pipe, the bottom of the connecting pipe is fixedly connected with the top of a liquid storage tank for transporting and storing the impurities after descaling, and a liquid outlet pipe is fixedly connected with one side wall of the liquid storage tank for discharging the impurities after descaling.

[0009] The first dust removal net is fixedly arranged in the inner cavity of the desulfurization tower, and the first dust removal net is fixedly arranged above the air inlet pipe.

[0010] Further, the right part of the air inlet pipe is fixedly provided with a flange.

[0011] Further, the bottom of the supporting leg is bonded with a non-slip pad.

[0012] Further, the flange of the liquid outlet pipe is connected with a second valve for controlling the discharge of the impurities after descaling.

[0013] Further, the inner cavity of the desulfurization tower is fixedly provided with a second dust removal net at the top for dust removal of the waste gas after desulfurization.

[0014] Further, the liquid distribution device is a liquid distribution pipe, and the other end of the liquid distribution pipe is fixedly arranged in the inner wall of the demisting box.

[0015] Further, the liquid distribution device is a liquid distribution disc, and a plurality of air vents are equidistantly arranged on the liquid distribution disc for discharging waste gas.

[0016] Further, the first spray head is a rotary spray head for uniformly spraying the desulfurization liquid.

[0017] Further, the second spray head is a rotary spray head for uniformly spraying the descaling liquid.

[0018] The utility model discloses a kind of demisting devices for desulfurization, by being provided with liquid filling pipe filling descaling liquid outside demisting box, liquid filling pipe penetrates into the inside of demisting box and is connected with liquid distribution device, by connecting second spray head with liquid distribution device, it is sprayed to each corner in demisting box with descaling liquid, and the scale layer accumulated in the inner wall of demisting box is chemically removed;By dissolving and removing the scale layer inside demisting box, the normal operation of desulfurization demisting device is guaranteed, the demisting effect is further guaranteed, and the cleaning efficiency of entire system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the overall structure schematic diagram of the utility model.

[0020] Fig. 2 The front view of the utility model.

[0021] In the figure: 1, desulfurization tower; 2, blowdown pipe; 3, water tank; 4, base; 5, leg; 6, non-slip mat; 7, water pump; 8, liquid inlet pipe; 9, first spray head; 10, air inlet pipe; 11, flange; 12, air outlet pipe; 13, demisting box; 14, exhaust pipe; 15, liquid filling pipe; 16, liquid distribution pipe; 17, second spray head; 18, first valve; 19, connecting pipe; 20, liquid storage tank; 21, liquid outlet pipe; 22, second valve; 23, third valve; 24, first dust removal net; 25, second dust removal net; 26, fourth valve. DETAILED DESCRIPTION

[0022] The utility model will be made further detailed explanation in combination with the specific implementation and the drawing.

[0023] Example one:

[0024] As Figs. 1-2 The demisting device for desulfurization includes a desulfurization tower 1 and an air inlet pipe 10. The desulfurization tower 1 is internally provided with an inner cavity. The left part of the air inlet pipe 10 penetrates the lower part of the right side wall of the desulfurization tower 1 to the inner cavity. The right part of the air inlet pipe 10 is fixedly provided with a flange 11, which facilitates the connection of the pipeline for transporting waste gas through the flange and can form a better closed environment.

[0025] The bottom of the desulfurization tower 1 is fixedly provided with a base 4. The bottom of the base 4 is boltedly connected with a plurality of legs 5. In this embodiment, the bottom of the base 4 is boltedly connected with the legs 5 at the top corners. The bottom of each leg 5 is bonded with a non-slip mat 6.

[0026] The upper end surface of the base 4 is fixedly provided with a water pump 7 and a liquid storage tank 20.

[0027] The water inlet pipe of the water pump 7 is arranged on the right side surface of the water pump 7, which is used for conveniently connecting the special water pipe for desulfurization liquid.

[0028] The water outlet end of the water pump 7 is fixedly connected with the bottom of a liquid inlet pipe 8. The desulfurization liquid is extracted upward by the water pump 7. The top of the liquid inlet pipe 8 penetrates the upper part of the right side wall of the desulfurization tower 1 to the inner cavity. A plurality of first spray heads 9 are arranged on the bottom of the liquid inlet pipe 8 in the inner cavity for spraying the desulfurization liquid. In this embodiment, eight first spray heads 9 are arranged on the bottom of the liquid inlet pipe 8. The eight first spray heads 9 are all rotary spray heads, which can uniformly spray the desulfurization liquid in 360 degrees, so that the desulfurization liquid and the waste gas are uniformly mixed, thereby achieving a better desulfurization effect.

[0029] The top of the desulfurization tower 1 is fixedly provided with a demisting box 13, the left side of the demisting box 13 is fixedly connected with an air outlet pipe 12, the bottom of the air outlet pipe 12 penetrates through the top of the desulfurization tower 1 to the inner cavity; a fourth valve 26 is flange-connected on the air outlet pipe 12; the top of the demisting box 13 is fixedly provided with an exhaust pipe 14 for discharging the desulfurized waste gas; the waste gas after desulfurization and dust removal is discharged from the air outlet pipe 12 of the desulfurization tower 1 into the demisting box 13, the waste gas is demisted, and finally discharged to the outside from the exhaust pipe 14.

[0030] The upper part of the right side of the demisting box 13 is fixedly connected with a liquid filling pipe 15, a first valve 18 is flange-connected on the liquid filling pipe 15 for controlling the infusion of the descaling liquid; the liquid filling pipe 15 penetrates into the inner part of the demisting box 13 and is inserted with a liquid distribution device, and the bottom of the liquid distribution device is provided with a plurality of second nozzles 17 at equal distances;

[0031] The liquid distribution device of the embodiment is a liquid distribution pipe 16, one end of the liquid distribution pipe 16 is inserted into the liquid filling pipe 15 and the other end is fixedly arranged on the inner wall of the demisting box 13, and four second nozzles 17 are uniformly and equidistantly arranged below the liquid distribution pipe 16; the second nozzles 17 are rotary nozzles and can rotate circumferentially to spray the descaling liquid to each corner of the demisting box 13 and descale each corner of the demisting box 13; the descaling liquid is a solution containing acidic or alkaline substances, which can effectively dissolve and remove the scale layer inside the demisting box 13 to achieve the best descaling effect. The scale layer accumulated on the inner wall of the demisting box 13 is chemically removed, which ensures the normal operation of the desulfurization and demisting device, further ensures the demisting effect, and improves the cleaning efficiency of the entire system.

[0032] The lower part of the right side of the demisting box 13 is fixedly connected with a connecting pipe 19, the bottom of the connecting pipe 19 is fixedly connected with the top of a liquid storage tank 20 for transporting and storing the impurities after descaling, and a liquid outlet pipe 21 is fixedly connected on one side wall of the liquid storage tank 20 for discharging the impurities after descaling; in the embodiment, a second valve 22 is flange-connected on the liquid outlet pipe 21 for controlling the discharge of the impurity solution after descaling, which is convenient for cleaning and maintenance and arrangement in the later period.

[0033] A first dust removal net 24 is fixedly arranged in the inner cavity of the desulfurization tower 1, and the first dust removal net 24 is fixedly arranged above the air inlet pipe 10; the waste gas is subjected to the first step of dust removal at the place where the waste gas is introduced;

[0034] A second dust removal net 25 is fixedly arranged in the inner cavity of the desulfurization tower 1 in the embodiment, for dust removal of the desulfurized waste gas; the second dust removal net 25 is made of high-density material and can effectively intercept fine particulate matters, further improving the effect of waste gas purification.

[0035] The bottom of the inner cavity is provided with a water tank 3, the bottom of the water tank 3 is inserted with a blowdown pipe 2 penetrating through the desulfurization tower 1 and the base 4, and the blowdown pipe 2 is flange-connected with a third valve 23. After desulfurization, the desulfurization liquid desulfurizes the waste gas, and the desulfurization liquid after acting on the waste gas enters the water tank 3 due to gravity; after one cycle of desulfurization, the third valve 23 is opened, and the liquid and impurities are discharged into a container containing waste liquid, so that the accumulation of impurities in the water tank 3 is avoided; not only the problems of equipment blockage and corrosion caused by impurity accumulation are effectively avoided, but also the pollution inside the desulfurization tower 1 is reduced, and the service life of the equipment is prolonged.

[0036] A use process of the desulfurization demisting device, comprising:

[0037] I. Connect the water inlet end of the water pump 7 with the pipeline dedicated to the desulfurization liquid, and open the water pump 7 and the fourth valve 26;

[0038] II. Flange-connect the pipeline conveying the waste gas to the air inlet pipe 10, and the waste gas enters the inner cavity;

[0039] III. The desulfurization liquid enters the inner cavity from the liquid inlet pipe 8 and is sprayed from the first spray head 9;

[0040] IV. The waste gas is dedusted by the first dust removal net 24, and the desulfurization liquid desulfurizes the waste gas;

[0041] V. The desulfurization liquid acting on the waste gas enters the water tank 3 under the action of gravity, and the desulfurized waste gas is further dedusted by the second dust removal net 25 upwards;

[0042] VI. Stop infusing the waste gas, and close the water pump 7;

[0043] VII. The waste gas enters the demisting box 13 inside through the air outlet pipe 12 for demisting, and finally is discharged to the outside through the exhaust pipe 14;

[0044] VIII. Close the fourth valve 26, open the first valve 18, infuse the descaling liquid into the liquid distribution pipe 16 through the liquid infusion pipe 15, and spray the descaling liquid into the demisting box 13 through the second spray head 17 to descale the inner wall of the demisting box 13;

[0045] IX. Stop infusing the descaling liquid; the descaling liquid acting on the demisting box 13 flows into the liquid storage tank 20 through the connecting pipe 19;

[0046] X. Open the second valve 22, and the descaling liquid acting on the demisting box 13 flows out to the outside through the liquid outlet pipe 21 for recycling and cleaning;

[0047] XI. After one cycle of desulfurization and demisting of the waste gas, open the third valve 23, and discharge the desulfurization liquid in the water tank 3 to the outside through the blowdown pipe 2 for recycling and cleaning.

[0048] Example II:

[0049] The liquid distribution device in the embodiment is a liquid distribution disc, ten second nozzles 17 are equidistantly arranged on the bottom end surface of the liquid distribution disc, more second nozzles 17 can be arranged, so that the descaling liquid can be sprayed in a large area, and it is ensured that the scale layer is fully and effectively removed.

[0050] The length of the liquid distribution disc is equal to the length of the inner wall of the demisting box 13, and the width of the liquid distribution disc is equal to the width of the inner wall of the demisting box 13; the waste gas after demisting is discharged through the exhaust pipe 14, and a plurality of air holes are equidistantly arranged on the liquid distribution disc to discharge the waste gas, so that the waste gas is smoothly discharged.

[0051] In summary, the embodiment two in the specification mainly explains the differences from the embodiment one, and the same and similar parts between the embodiment one and other embodiments can be referred to each other.

[0052] The above embodiments are not a limitation on the utility model, and the utility model is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the technical scheme range of the utility model also belong to the protection range of the utility model.

Claims

1. A desulfurization demister, comprising a desulfurization tower (1) and an inlet pipe (10), wherein the desulfurization tower (1) has an inner cavity, and the left part of the inlet pipe (10) penetrates the lower part of the right side wall of the desulfurization tower (1) into the inner cavity; a base (4) is fixedly provided at the bottom of the desulfurization tower (1), and several support legs (5) are bolted to the bottom of the base (4); a water pump (7) and a liquid storage tank (20) are fixedly provided on the upper end face of the base (4); the water outlet of the water pump (7) is fixedly connected to the bottom of the liquid inlet pipe (8), and the top of the liquid inlet pipe (8) penetrates the upper part of the right side wall of the desulfurization tower (1) into the inner cavity, and several first nozzles (9) are provided at the bottom of the liquid inlet pipe (8) in the inner cavity for spraying desulfurization liquid; characterized in that: A demister (13) is fixedly installed on the top of the desulfurization tower (1). An outlet pipe (12) is fixedly connected to the left side of the demister (13). The bottom of the outlet pipe (12) passes through the top of the desulfurization tower (1) to the inner cavity. A fourth valve (26) is connected to the flange on the outlet pipe (12). An exhaust pipe (14) is fixedly installed on the top of the demister (13) for discharging the desulfurized waste gas. A filling pipe (15) is fixedly connected to the upper part of the right side of the demister (13). A first valve (18) is connected to the flange of the filling pipe (15) to control the filling of the descaling liquid. The filling pipe (15) passes through the interior of the demister (13) and is connected to a liquid distribution device. Several second nozzles (17) are evenly spaced at the bottom of the liquid distribution device. A connecting pipe (19) is fixedly connected to the lower part of the right side of the demister (13). The bottom of the connecting pipe (19) is fixedly connected to the top of the storage tank (20) to transport and store the impurities after descaling. A liquid outlet pipe (21) is fixedly connected to one side wall of the storage tank (20) to discharge the impurities after descaling. A first dust removal screen (24) is fixedly installed in the inner cavity of the desulfurization tower (1), and the first dust removal screen (24) is fixedly installed above the air inlet pipe (10); a water tank (3) is installed at the bottom of the inner cavity, and a drain pipe (2) is inserted through the desulfurization tower (1) and the base (4) at the bottom of the water tank (3), and a third valve (23) is connected to the flange on the drain pipe (2).

2. The desulfurization demister according to claim 1, characterized in that: A flange (11) is fixedly installed on the right side of the air intake pipe (10).

3. The desulfurization demister according to claim 1, characterized in that: The bottom of the support leg (5) is glued with an anti-slip pad (6).

4. The desulfurization demister according to claim 1, characterized in that: The outlet pipe (21) is flanged with a second valve (22) for controlling the discharge of impurities after descaling.

5. The desulfurization demister according to claim 1, characterized in that: The liquid distribution device is a liquid distribution pipe (16), and the other end of the liquid distribution pipe (16) is fixedly installed on the inner wall of the demister (13) after being inserted into one end of the liquid filling pipe (15).

6. The desulfurization demister according to claim 1, characterized in that: The liquid distribution device is a liquid distribution plate, on which several vent holes are equally spaced to discharge waste gas.

7. The desulfurization demister according to claim 1, characterized in that: A second dust removal screen (25) is fixedly installed at the top of the inner cavity of the desulfurization tower (1) for dust removal of the desulfurized exhaust gas.

8. The desulfurization demister according to claim 1, characterized in that: The first nozzle (9) is a rotating nozzle for uniformly spraying desulfurization liquid.

9. The desulfurization demister according to claim 1, characterized in that: The second nozzle (17) is a rotating nozzle for uniformly spraying the descaling solution.

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