Carbon roasting furnace flue gas purification device

Abstract

The utility model discloses a flue gas purification device for a carbon roasting furnace, which is characterized in that the gas inlet end of a first flue is connected to the top end of a cooling tower, the lower part of the cooling tower is provided with a gas inlet flue, the gas inlet flue is connected with a dust remover through a gas inlet pipe, and the dust remover is connected with an outlet flue through a flue pipe; the gas inlet flue and the outlet flue are both connected with a fourth flue, the fourth flue is connected to a desulfurization tower, the top of the desulfurization tower is connected with a second flue, the second flue is connected to the lower part of a wet electric treatment tower, the upper part of the wet electric treatment tower is connected with a third flue, and the third flue is connected with a chimney. The cooling tower is used for cooling the flue gas and settling large-particle dust, the dust remover is used for carrying out cloth bag dust removal, the desulfurization tower is used for carrying out desulfurization treatment, the desulfurized flue gas enters the wet electric treatment tower, and particulate matters, water vapor, acid mist and the like in the flue gas are purified by the device and then are emptied by the chimney.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial waste gas treatment processing technical field, concretely relates to a carbon baking furnace flue gas purification device. BACKGROUND

[0002] Carbon baking production manufacturing process often uses natural gas as fuel, produces a large amount of flue gas, and these flue gases contain nitrogen oxides, tar, SO2, dust and other pollutants. At present, domestic carbon baking furnace flue gas treatment is only cooling spray tower (adding lime desulfurization) + vertical honeycomb type electric tar catcher treatment, which only goes through simple tar removal and desulfurization measures. According to the emission requirements of the production enterprises in the modification of GB25465-2010 "Aluminum Industry Pollutant Discharge Standard", the particulate matter of the purified flue gas should not be higher than 10 mg / m 3 , SO2 should not be higher than 100 mg / m 3 , NO X Should not be higher than 100 mg / m 3 , and asphalt smoke should not be higher than 20 mg / m 3 . The pollutant concentration in the flue gas treated by the existing flue gas treatment process has not reached the special emission limit value requirement.

[0003] With the increasingly strict national environmental protection policy, in order to meet the increasingly strict emission standards, and to avoid further strictness of subsequent environmental protection policy, environmental protection reconstruction must be carried out on the carbon baking flue gas treatment system, and one-time rectification is required to reach the ultra-low emission requirement, i.e. particulate matter should not be higher than 5 mg / m 3 , SO2 should not be higher than 35 mg / m 3 , NO X Should not be higher than 50 mg / m 3 , and the whole process purification process requirement for carbon baking flue gas is imminent. Therefore, in view of the purification of carbon baking furnace flue gas, a carbon baking furnace flue gas purification device is provided. SUMMARY

[0004] In view of the above problems, the purpose of the utility model is to provide a carbon baking furnace flue gas purification device.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A carbon baking furnace flue gas purification device, comprising: a first flue, a cooling tower, a third flue, an inlet flue, a dust remover, an inlet pipe, a fourth flue, a flue pipe, an outlet flue, a desulfurization tower, a chimney, a second flue, and a wet electric treatment tower.

[0007] The first flue inlet end is connected to the top end of the cooling tower, the lower part of the cooling tower is provided with an inlet flue, the inlet flue is connected with the dust remover through an inlet pipe, and the dust remover is connected with the outlet flue through a flue pipe.

[0008] The inlet flue and the outlet flue are connected with the fourth flue, the fourth flue is connected to the desulfurization tower, the top of the desulfurization tower is connected with the second flue, the second flue is connected to the lower part of the wet electric treatment tower, the upper part of the wet electric treatment tower is connected with the third flue, and the third flue is connected with the chimney.

[0009] Further, the upper part of the cooling tower is provided with a first spray pipe, the first spray pipe is connected with an external water pipe, and a water pump is arranged on the external water pipe.

[0010] The water outlet end of the first spray pipe is provided with a spiral nozzle.

[0011] Further, one end of the inlet flue is arranged in the cooling tower in an arc shape, the top of the arc-shaped inlet flue is provided with a conical hopper plate, and a flue inlet is formed in the side wall of the arc-shaped inlet flue.

[0012] The lower part of the cooling tower is arranged in a conical shape, the lower part of the conical shape is provided with a drainage port, a drainage pipe is connected to the lower part of the drainage port, and a control valve is arranged on the drainage pipe.

[0013] Further, one end of the fourth flue extends into the desulfurization tower, the fourth flue in the desulfurization tower is arranged in an inclined manner, the outlet of the fourth flue in the desulfurization tower faces downward, the desulfurization tower at the upper part of the fourth flue is provided with an auxiliary plate, and flow-through holes are uniformly formed in the auxiliary plate.

[0014] Further, the lower part of the desulfurization tower is provided with a stirring shaft, stirring paddles are arranged on the stirring shaft, and the stirring shaft is driven by a second motor.

[0015] Further, liquid inlet pipes are arranged on the side walls of the desulfurization tower above and below the auxiliary plate, pump bodies are arranged on the liquid inlet pipes, a plurality of second spray pipes are connected to the upper parts of the liquid inlet pipes, the second spray pipes are arranged in the desulfurization tower, and liquid outlets are formed in the lower walls of the second spray pipes.

[0016] Further, a first demister is arranged at the upper part of the desulfurization tower.

[0017] Further, an anode pipe bundle, a second demister and a backwashing device are sequentially arranged in the wet electric treatment tower from bottom to top.

[0018] Further, a fan is arranged on the fourth flue, and the fan is driven by a first motor.

[0019] Further, liquid pipes are arranged on the side walls of the desulfurization tower above and below the auxiliary plate, and control valves are arranged on the liquid pipes.

[0020] Compared with the prior art, the utility model has at least one of the following beneficial effects:

[0021] (1) the cooling tower cools and precipitates large particle dust in the flue gas, the dust collector carries out bag dust removal, the desulfurization tower carries out desulfurization treatment, and the flue gas after desulfurization enters the wet electric treatment tower, and the device is used for purifying particulate matters, water vapor, acid mist and the like in the flue gas and discharging the flue gas by the chimney.

[0022] (2) the desulfurization tower is lime water, and the flue gas is desulfurized by spraying. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structure schematic view of the utility model.

[0024] Figure 2 It is a structure schematic view of the desulfurization tower.

[0025] Figure 3 It is a connection schematic view of the cooling tower.

[0026] Figure 4 It is a connection schematic view of the wet electric treatment tower.

[0027] In the drawing: 1 - first flue, 2 - cooling tower, 3 - first spray pipe, 4 - third flue, 5 - inlet flue, 6 - dust collector, 7 - conical hopper plate, 8 - flue inlet, 9 - drainage outlet, 10 - inlet pipe, 11 - fourth flue, 12 - liquid pipe, 13 - flue pipe, 14 - outlet flue, 15 - fan, 16 - first motor, 17 - desulfurization tower, 18 - auxiliary plate, 19 - flow-through hole, 20 - stirring shaft, 21 - stirring paddle, 22 - liquid inlet pipe, 23 - pump body, 24 - second spray pipe, 25 - liquid outlet, 26 - chimney, 27 - first mist eliminator, 28 - second flue, 29 - wet electric treatment tower, 30 - anode pipe bundle, 31 - second mist eliminator, 32 - backflushing device, 33 - second motor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples.The specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0029] The carbon baking furnace flue gas purification device comprises a first flue 1, a cooling tower 2, a first spray pipe 3, a third flue 4, an air inlet flue 5, a dust collector 6, a conical hopper plate 7, a flue inlet 8, a drainage outlet 9, an air inlet pipe 10, a fourth flue 11, a liquid pipe 12, a flue pipe 13, an outlet flue 14, a fan 15, a first motor 16, a desulfurization tower 17, an auxiliary plate 18, a flow-through hole 19, a stirring shaft 20, a stirring paddle 21, a liquid inlet pipe 22, a second motor 23, a second spray pipe 24, a liquid outlet 25, a chimney 26, a first mist eliminator 27, a second flue 28, a wet electric treatment tower 29, an anode pipe bundle 30, a second mist eliminator 31, a backwashing device 32.

[0030] The air inlet end of the first flue 1 is connected to the top end of the cooling tower 2, the upper part of the cooling tower 2 is provided with the first spray pipe 3, the first spray pipe 3 is connected with an external water pipe, a water pump is arranged on the external water pipe, a spiral nozzle is arranged at the water outlet end of the first spray pipe 3, the lower part of the cooling tower 2 is provided with the air inlet flue 5, one end of the air inlet flue 5 is arranged in the cooling tower 2 in an arc shape, the top of the arc-shaped air inlet flue 5 is provided with the conical hopper plate 7, the sidewall of the arc-shaped air inlet flue 5 is provided with the flue inlet 8, the lower part of the cooling tower 2 is conical and is provided with the drainage outlet 9 at the lower part, the drainage outlet 9 is connected with a drainage pipe, and a control valve is arranged on the drainage pipe. A temperature sensor is arranged in the cooling tower 2, the temperature sensor is connected with a display, and the display is arranged on the outer wall of the cooling tower 2.

[0031] A plurality of air inlet pipes 10 are arranged on one side of the air inlet flue 5, a control valve is arranged on the air inlet pipe 10, the air inlet pipe 10 is connected with the dust collector 6, a plurality of flue pipes 13 are connected to the upper part of the dust collector 6, and the flue pipes 13 are connected with the outlet flue 14.

[0032] The air inlet flue 5 and the outlet flue 14 are connected with the fourth flue 11, the fourth flue 11 is connected to the desulfurization tower 17, one end of the fourth flue 11 extends into the desulfurization tower 17, the fourth flue 11 in the desulfurization tower 17 is arranged in an inclined manner and the outlet of the fourth flue 11 in the desulfurization tower 17 faces downward, the desulfurization tower 17 at the upper part of the fourth flue 11 is provided with the auxiliary plate 18, and the auxiliary plate 18 is uniformly provided with the flow-through hole 19.

[0033] The desulfurization tower 17 is provided with the stirring shaft 20 at the lower part, the stirring shaft 20 is provided with the stirring paddle 21, and the stirring shaft 20 is driven by the second motor 23; the sidewall of the desulfurization tower 17 above and below the auxiliary plate 18 is provided with the liquid inlet pipe 22, the liquid inlet pipe 22 is provided with a pump body, a plurality of second spray pipes 24 are connected to the upper part of the liquid inlet pipe 22, the second spray pipes 24 are arranged in the desulfurization tower 17, and the lower wall of the second spray pipe 24 is provided with the liquid outlet 25.

[0034] The first mist eliminator 27 is arranged at the upper portion of the desulfurization tower 17, and the second flue 28 is connected to the top of the desulfurization tower 17, and the second flue 28 is connected to the lower portion of the wet electric treatment tower 29, and the anode pipe bundle 30, the second mist eliminator 31 and the back flushing device 32 are sequentially arranged in the wet electric treatment tower 29 from bottom to top, and the upper portion of the wet electric treatment tower 29 is connected to the third flue 4, and the third flue 4 is connected to the chimney 26.

[0035] The fan 15 is arranged on the fourth flue 11, and the fan 15 is driven by the first motor 16.

[0036] The liquid pipe 12 is arranged on the side wall of the desulfurization tower 17, and the control valve is arranged on the liquid pipe 12.

[0037] The working process is as follows: the flue gas enters into the cooling tower 2 through the first flue 1, the flue gas enters into the flue inlet 8, and then enters into the flue gas inlet 5, and then enters into the dust collector 6 through the gas inlet pipe 10 for dust removal treatment, each gas inlet pipe 10 is connected to a gas chamber and a dust cloth bag, and then the flue gas enters into the outlet flue 14 through the flue pipe 13 after dust removal, and then enters into the fourth flue 11.

[0038] When the temperature sensor and the display detect that the temperature entering into the cooling tower 2 is too high, the control valve on the gas inlet pipe 10 is closed, the external water pipe enters water which is sprayed out through the first spray pipe 3 and the spiral nozzle connected to the first spray pipe 3, and then the flue gas enters into the flue inlet 8, and then enters into the flue gas inlet 5, and then enters into the fourth flue 11, and then the flue gas in the fourth flue 11 enters into the desulfurization tower 17, and one end of the fourth flue 11 extends into the desulfurization tower 17, and the fourth flue 11 is arranged to be inclined in the desulfurization tower 17 and the outlet of the fourth flue 11 is downward in the desulfurization tower 17. The desulfurization tower 17 enters into lime water through the liquid pipe 12 at the upper portion, the stirring shaft 20 is driven to move by the second motor 23, the stirring shaft 20 drives the stirring paddle 21 to play a stirring role, so that the lime water enters into the plurality of second spray pipes 24 through the liquid inlet pipe 22, and then is sprayed out through the liquid outlet 25 of the second spray pipe 24, and then the flue gas in the flue gas can be treated. The desulfurization tower 17 is provided with the auxiliary plate 18, the auxiliary plate 18 is uniformly provided with the flow-through hole 19, the flow-through hole 19 is relatively large, and the flue gas and the lime water can pass through the flow-through hole 19, and the lime water in the desulfurization tower 17 can be discharged through the liquid pipe 12 at the lower portion after being used for a period of time.

[0039] After the desulfurization, the flue gas enters into the wet electric treatment tower 29 after being treated through the first mist eliminator 27, the flue gas first passes through the high-pressure anode pipe bundle 30 to remove the asphalt oil smoke, then passes through the second mist eliminator 31 to separate the liquid drops in the gas, and then passes through the back flushing device 32 to be discharged through the third flue 4 and the chimney 26.

[0040] The cooling tower 2 cools and precipitates large particle dust, the temperature of flue gas after treatment in the cooling tower 2 is 115±5℃, the dust collector 6 performs bag dust removal, the desulfurization tower 17 performs desulfurization treatment, the flue gas after desulfurization enters the wet electric treatment tower 29, and the device of the application purifies particulate matters, water vapor, acid mist and the like in the flue gas and is discharged by a chimney.

[0041] While the application has been described herein with reference to the exemplary embodiments thereof, it is to be understood that the application is capable of numerous rearrangements and / or modifications as will be readily apparent to those skilled in the art, and that you intended that the scope of the application be limited only as by the appended claims. More particularly, various modifications and improvements are within the scope of the disclosed subject matter and can be particularized to the constitution components and / or layout of the subject combination layout. In addition to variations and modifications of the constitution components and / or layout, other applications can become apparent from consideration of the specification and drawings.

Claims

1. A carbon baking furnace flue gas cleaning device, characterized by: The utility model relates to a kind of flue gas treatment systems, including: First flue (1), cooling tower (2), third flue (4), intake flue (5), dust collector (6), intake pipe (10), fourth flue (11), flue pipe (13), outlet flue (14), desulfurization tower (17), chimney (26), second flue (28), wet electric treatment tower (29); The first flue (1) intake end is connected to the top end of cooling tower (2), and the lower part of cooling tower (2) is provided with intake flue (5), which is connected with dust collector (6) through intake pipe (10), and dust collector (6) is connected with outlet flue (14) through flue pipe (13); Intake flue (5) and outlet flue (14) are connected with fourth flue (11), which is connected to desulfurization tower (17), and the top of desulfurization tower (17) is connected with second flue (28), which is connected to the lower part of wet electric treatment tower (29), and the upper part of wet electric treatment tower (29) is connected with third flue (4), and third flue (4) is connected with chimney (26).

2. A carbon roaster flue gas cleaning device according to claim 1, characterized in that: The upper part of the cooling tower (2) is provided with a first spray pipe (3), which is connected with an external water pipe. A water pump is arranged on the external water pipe. The water outlet end of the first spray pipe (3) is provided with a spiral nozzle.

3. The carbon roaster flue gas purification device according to claim 1, characterized by: One end of the intake flue (5) is arc-shapedly arranged in the cooling tower (2). The top of the arc-shaped intake flue (5) is provided with a conical hopper plate (7). The sidewall of the arc-shaped intake flue (5) is provided with a flue inlet (8). The lower part of the cooling tower (2) is conical and is provided with a drain outlet (9) at the lower part. The lower part of the drain outlet (9) is connected with a drain pipe. A control valve is arranged on the drain pipe.

4. The carbon baking furnace flue gas purification device according to claim 1, characterized by: One end of the fourth flue (11) extends into the desulfurization tower (17). The fourth flue (11) in the desulfurization tower (17) is arranged obliquely, and the outlet of the fourth flue (11) is downward in the desulfurization tower (17). The desulfurization tower (17) at the upper part of the fourth flue (11) is provided with an auxiliary plate (18). The auxiliary plate (18) is uniformly provided with flow holes (19).

5. The carbon roaster flue gas cleaning device according to claim 1, characterized in that: The lower part of the desulfurization tower (17) is provided with a stirring shaft (20). The stirring shaft (20) is provided with stirring paddles (21). The stirring shaft (20) is driven by a second motor (23).

6. A carbon roaster flue gas cleaning device according to claim 4, characterized in that: The sidewalls of the desulfurization tower (17) above and below the auxiliary plate (18) are provided with liquid inlet pipes (22). The liquid inlet pipes (22) are provided with pump bodies. The upper parts of the liquid inlet pipes (22) are connected with a plurality of second spray pipes (24). The second spray pipes (24) are arranged in the desulfurization tower (17). The lower walls of the second spray pipes (24) are provided with liquid outlets (25).

7. A carbon roaster flue gas cleaning device according to claim 1, characterized in that: The upper part of the desulfurization tower (17) is provided with a first demister (27).

8. The carbon roaster flue gas purification device according to claim 1, characterized by: The wet electric treatment tower (29) is sequentially provided with an anode pipe bundle (30), a second demister (31), and a backwashing device (32) from bottom to top.

9. The carbon roaster flue gas cleaning device according to claim 1, characterized in that: The fourth flue (11) is provided with a fan (15). The fan (15) is driven by a first motor (16).

10. The carbon roaster flue gas cleaning device according to claim 1, characterized in that: The sidewalls of the desulfurization tower (17) are provided with liquid pipes (12). The liquid pipes (12) are provided with control valves.

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