Wet desulphurization device for coke oven gas

Abstract

A coke oven gas wet desulfurization device comprises a bottom plate, a desulfurization tower is arranged on the bottom plate, a gas valve and a water valve are arranged on the desulfurization tower, a water storage tank filled with lime water is arranged on the bottom plate, a water pipe is arranged on the water storage tank, a water pump is arranged on the desulfurization tower, a water inlet of the water pump is connected and communicated with the water pipe, and a water outlet of the water pump is connected and communicated with the water pipe. A first shower head and a second shower head are arranged in the desulfurizing tower, and are connected and communicated with a water outlet of the water pump. Clear water filtered out by the filter plate is sprayed to the demister through the third shower head to wash the demister, so that impurities on the demister are removed, and the subsequent filtering effect of the demister is ensured.

Description

Technical Field

[0001] The utility model relates to a desulfurization device, in particular to a coke oven gas wet desulfurization device. Background Art

[0002] Coke oven gas is a flammable gas produced by high-temperature dry distillation of coking coal in a coke oven. Wet desulfurization is a commonly used desulfurization method. The gas is brought into contact with an absorption liquid containing an oxidant so that the sulfur dioxide in the gas is oxidized into sulfate ions, thereby achieving the purpose of desulfurization. Coke oven gas contains a large amount of harmful gases such as sulfur dioxide, which poses a great threat to the air and the environment. Therefore, desulfurization treatment is required when using or discharging coke oven gas to ensure the quality of the gas and meet environmental requirements.

[0003] The patent with the patent authorization announcement number CN210656825U discloses a coke oven gas desulfurization tower. The patent improves the air flow inside the desulfurization tower through a booster fan, and removes impurities generated in the coke oven gas through a filtering mechanism. However, the patent still has shortcomings in actual use. The patent lacks the function of cleaning the filter disc, resulting in excessive impurities attached to the filter disc during use, causing blockage, thereby affecting the filtering effect.

[0004] Therefore, there is an urgent need to provide a coke oven gas wet desulfurization device with a cleaning function. Utility Model Content

[0005] In order to overcome the disadvantage that the above patent lacks the function of cleaning the filter disc, resulting in excessive impurities adhering to the filter disc during use, causing blockage and thus affecting the filtering effect, the utility model provides a coke oven gas wet desulfurization device with a cleaning function.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions: a coke oven gas wet desulfurization device, comprising a bottom plate, a desulfurization tower is arranged on the bottom plate, a gas valve and a water valve are arranged on the desulfurization tower, a water storage tank filled with lime water is arranged on the bottom plate, a water pipe is arranged on the water storage tank, a water pump is arranged on the desulfurization tower, a water inlet of the water pump is connected and communicated with the water pipe, a first shower and a second shower are arranged in the desulfurization tower, the first shower and the second shower are connected and communicated with the water outlet of the water pump together, so that the operation of the water pump can pump the lime water in the water storage tank into the The first shower head and the second shower head are sprayed to desulfurize, the first baffle and the second baffle are fixedly connected in the desulfurization tower, a demister for filtering coal gas is installed in the desulfurization tower, a filter shell is provided on the desulfurization tower through a fixing belt, a filter plate for filtering lime water is provided in the filter shell, a third shower head is provided in the desulfurization tower, the third shower head is connected and communicated with the filter shell, so that the third shower head can spray the clean water filtered by the filter plate to flush the desulfurization tower, an air pipe is connected and communicated on the desulfurization tower, a heating shell is provided on the bottom plate, and a chimney is provided on the heating shell.

[0007] As a preferred technical solution of the present invention, the first partition is located above the first shower head, and the second partition is located below the second shower head.

[0008] As a preferred technical solution of the present utility model, the total number of the filter plates is four.

[0009] As a preferred technical solution of the present utility model, the third shower head is located above the filter housing.

[0010] As a preferred technical solution of the utility model, a support plate is arranged in the heating shell, a heating pipe for heating the coal gas is arranged on the support plate, and a first turbine for discharging the coal gas is arranged in the chimney.

[0011] As a preferred technical solution of the present utility model, the heating tubes are arranged in a ring shape.

[0012] As a preferred technical solution of the utility model, a bracket is fixedly connected in the desulfurization tower, a rotating rod is rotatably connected to the bracket, and a second turbine for stirring the coal gas is arranged on the rotating rod.

[0013] As a preferred technical solution of the utility model, a stirrer is arranged on the water storage tank through a support frame, and a stirring head of the stirrer is located in the water storage tank. The lime water can be stirred by starting the stirrer.

[0014] As a preferred technical solution of the utility model, an anti-corrosion sleeve is provided on the ball valve of the gas valve.

[0015] As a preferred technical solution of the utility model, an anti-corrosion pad is arranged inside the ball valve of the water valve.

[0016] Compared with the prior art, the utility model has the following technical effects:

[0017] 1. Use the third shower head to spray the clean water filtered out by the filter plate onto the demister to rinse it, thereby removing impurities on the demister and ensuring the subsequent filtering effect of the demister.

[0018] 2. Heat the coal gas through the heating pipe to promote the chemical reaction between the coal gas and lime water to ensure the desulfurization effect of the coal gas.

[0019] 3. The coke oven gas drives the first turbine to rotate, so that the first turbine stirs the coke oven gas, thereby slowing down the upward flow speed of the gas, increasing the retention time of the gas in the desulfurization tower, and ensuring that the gas and lime water can fully react.

[0020] 4. Start the agitator to stir the lime water in the water tank to prevent the lime in the water tank from agglomerating and ensure the fluidity of the lime water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0022] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the utility model water storage tank, water pipe and water pump.

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the first shower head, the first partition plate and the second shower head of the utility model.

[0024] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the utility model's air pipe, heating shell and chimney.

[0025] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the heating tube, the support plate and the first turbine of the utility model.

[0026] Figure 6 It is a three-dimensional cross-sectional structural schematic diagram of the water storage tank, agitator and support frame of the utility model.

[0027] Markings in the figure are: 1, bottom plate, 2, desulfurization tower, 3, air valve, 4, water valve, 5, water tank, 6, water pipe, 7, water pump, 8, first shower head, 9, first partition, 10, second shower head, 11, second partition, 12, demister, 13, filter shell, 1301, fixing belt, 14, filter plate, 15, third shower head, 16, air pipe, 17, heating shell, 18, chimney, 19, heating pipe, 20, support plate, 21, first turbine, 22, bracket, 23, rotating rod, 24, second turbine, 25, agitator, 26, support frame, 27, anti-corrosion sleeve, 28, anti-corrosion pad. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1: Please refer to Figure 1-Figure 3A coke oven gas wet desulfurization device comprises a bottom plate 1, a desulfurization tower 2 is arranged at the middle position of the top of the bottom plate 1, an air valve 3 and a water valve 4 are arranged on the lower left side of the desulfurization tower 2 and are symmetrically distributed up and down, an anti-corrosion sleeve 27 is arranged on the ball valve of the air valve 3, and an anti-corrosion pad 28 is arranged inside the ball valve of the water valve 4 to prevent corrosion, a water storage tank 5 filled with lime water is arranged on the front side of the top of the bottom plate 1, a water pipe 6 is arranged on the right rear part of the water storage tank 5, and the front side of the lower part of the desulfurization tower 2 is connected by bolts. A water pump 7 is provided, and the water inlet of the water pump 7 is connected and communicated with the water pipe 6. A first shower head 8 and a second shower head 10 are symmetrically distributed up and down, and the first shower head 8 and the second shower head 10 are connected and communicated with the water outlet of the water pump 7. When the water pump 7 is operated, the lime water in the water storage tank 5 can be pumped into the first shower head 8 and the second shower head 10 for desulfurization. The first shower head 8 and the second shower head 10 are symmetrically distributed up and down, and the middle part of the desulfurization tower 2 is fixedly connected by welding. The partition 9 and the second partition 11, the first partition 9 is located above the first shower 8, the second partition 11 is located below the second shower 10, the first partition 9 and the second partition 11 are used to block the gas to prevent the gas from going up too fast, the desulfurization tower 2 is installed with a demister 12 for filtering the gas, the upper right side of the desulfurization tower 2 is provided with a filter shell 13 through a fixing belt 1301, the filter shell 13 is provided with a filter plate 14 for filtering lime water, and the total number of the filter plates 14 is four , and the four filter plates 14 are equidistantly distributed longitudinally, a third shower head 15 is arranged above the filter shell 13 in the desulfurization tower 2, and the third shower head 15 is connected and communicated with the filter shell 13, so that the third shower head 15 can spray the clean water filtered by the filter plate 14 to flush the desulfurization tower 2, and an air pipe 16 is connected and communicated with the top of the desulfurization tower 2, and a heating shell 17 is arranged on the right side of the top of the bottom plate 1 by bolt connection, and a chimney 18 is arranged on the top of the heating shell 17.

[0030] When in use, open the gas valve 3 to allow the coke oven gas to enter the desulfurization tower 2, and at the same time, start the water pump 7 to pump the lime water in the water storage tank 5 into the first shower head 8, the second shower head 10 and the filter shell 13. The first shower head 8 and the second shower head 10 spray the lime water into the desulfurization tower 2 to desulfurize the gas. The desulfurized gas then goes up to the demister 12. The demister 12 filters the coke oven gas to remove the residual sulfur dioxide and impurities in the coke oven gas to improve the desulfurization effect. The lime water entering the filter shell 13 is filtered into clean water by the filter plate 14 and then sprayed onto the demister 12 through the third shower head 15 to rinse it, thereby removing impurities on the demister 12 and ensuring the subsequent filtering effect of the demister 12. Finally, the gas filtered by the demister 12 enters the heating shell 17 through the air pipe 16 and is discharged from the chimney 18.

[0031] Example 2: Based on Example 1, please refer to Figure 5 A support plate 20 is provided at the bottom of the heating shell 17 by screw connection, and a heating pipe 19 for heating the coal gas is provided on the support plate 20, and the heating pipe 19 is arranged in a ring shape so that the heating pipe 19 can be heated uniformly in all aspects, and a first turbine 21 for discharging the coal gas is provided at the exhaust port of the chimney 18.

[0032] When the coal gas enters the heating shell 17, the heating pipe 19 heats the coal gas, thereby promoting the chemical reaction between the coal gas and lime water to ensure the desulfurization effect of the coal gas. Subsequently, the desulfurized coal gas moves upward to drive the first turbine 21 to rotate, so that the first turbine 21 quickly discharges the coal gas.

[0033] See also Figure 2 The front and rear side walls inside the desulfurization tower 2 are fixedly connected with a bracket 22 by welding. A rotating rod 23 is rotatably connected to the bracket 22. A second turbine 24 is provided on the rotating rod 23. When the coal gas enters the desulfurization tower 2, the second turbine 24 rotates accordingly to stir the coal gas.

[0034] When the coke oven gas enters the desulfurization tower 2, the coke oven gas drives the first turbine 21 to rotate, so that the first turbine 21 stirs the coke oven gas, thereby slowing down the upward flow speed of the gas, increasing the retention time of the gas in the desulfurization tower 2, and ensuring that the gas and lime water can fully react.

[0035] See also Figure 6 A stirrer 25 is provided on the top of the water storage tank 5 through a support frame 26. The stirring head of the stirrer 25 is located in the water storage tank 5. The lime water can be stirred by starting the stirrer 25.

[0036] When the device is used, the stirrer 25 is started to stir the lime water in the water storage tank 5 to prevent the lime in the water storage tank 5 from agglomerating and ensure the fluidity of the lime water.

[0037] The above description is only an example of the implementation of the present invention and is not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The contents not elaborated in the present invention belong to the existing technology known to the technicians in this professional field.

Claims

1. A coke oven gas wet desulfurization device, characterized in that: The invention comprises a bottom plate (1), a desulfurization tower (2) is arranged on the bottom plate (1), an air valve (3) and a water valve (4) are arranged on the desulfurization tower (2), a water storage tank (5) filled with lime water is arranged on the bottom plate (1), a water pipe (6) is arranged on the water storage tank (5), a water pump (7) is arranged on the desulfurization tower (2), a water inlet of the water pump (7) is connected and communicated with the water pipe (6), a first shower head (8) and a second shower head (10) are arranged in the desulfurization tower (2), the first shower head (8) and the second shower head (10) are connected and communicated with the water outlet of the water pump (7), so that the water pump (7) can be operated to draw the lime water in the water storage tank (5) into the first shower head (8) and the second shower head (10) for spraying to desulfurize, and the desulfurization tower (2) is provided with a first shower head (8) and a second shower head (10) in common. A first partition plate (9) and a second partition plate (11) are fixedly connected in the tower (2); a demister (12) for filtering coal gas is installed in the desulfurization tower (2); a filter shell (13) is arranged on the desulfurization tower (2) via a fixing belt (1301); a filter plate (14) for filtering lime water is arranged in the filter shell (13); a third shower head (15) is arranged in the desulfurization tower (2); the third shower head (15) is connected and communicated with the filter shell (13) so that the third shower head (15) can spray clean water filtered by the filter plate (14) to wash the desulfurization tower (2); an air pipe (16) is connected and communicated with the desulfurization tower (2); a heating shell (17) is arranged on the bottom plate (1); and a chimney (18) is arranged on the heating shell (17).

2. A coke oven gas wet desulfurization device according to claim 1, characterized in that: The first partition plate (9) is located above the first shower head (8), and the second partition plate (11) is located below the second shower head (10).

3. A coke oven gas wet desulfurization device according to claim 1, characterized in that: The total number of filter plates (14) is four.

4. A coke oven gas wet desulfurization device according to claim 1, characterized in that: The third shower head (15) is located above the filter housing (13).

5. A coke oven gas wet desulfurization device according to claim 1, characterized in that: A support plate (20) is arranged in the heating shell (17), a heating pipe (19) for heating coal gas is arranged on the support plate (20), and a first turbine (21) for discharging coal gas is arranged in the chimney (18).

6. A coke oven gas wet desulfurization device according to claim 5, characterized in that: The heating tubes (19) are arranged in a ring shape.

7. A coke oven gas wet desulfurization device according to claim 1, characterized in that: A bracket (22) is fixedly connected inside the desulfurization tower (2), a rotating rod (23) is rotatably connected to the bracket (22), and a second turbine (24) for stirring the coal gas is arranged on the rotating rod (23).

8. A coke oven gas wet desulfurization device according to claim 1, characterized in that: A stirrer (25) is arranged on the water storage tank (5) via a support frame (26); a stirring head of the stirrer (25) is located inside the water storage tank (5); and the lime water can be stirred by starting the stirrer (25).

9. A coke oven gas wet desulfurization device according to claim 1, characterized in that: An anti-corrosion sleeve (27) is provided on the ball valve of the gas valve (3).

10. A coke oven gas wet desulfurization device according to claim 1, characterized in that: An anti-corrosion pad (28) is arranged inside the ball valve of the water valve (4).

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