Waste incineration flue gas treatment device capable of improving activated carbon adsorption effect

Abstract

The waste incineration flue gas treatment device capable of improving the activated carbon adsorption effect comprises a flue gas channel installed on a base, a flue gas inlet and a flue gas outlet are formed in the two ends of the flue gas channel respectively, a drainage fan is installed at the air outlet, a carbon storage box for containing activated carbon is arranged at the bottom of the flue gas inlet, and the activated carbon is arranged in the carbon storage box. The carbon storage box is sequentially provided with a carbon spraying opening and a recovery opening from top to bottom, the carbon spraying opening is provided with a spraying motor used for spraying activated carbon, a filter screen is arranged in the smoke channel and covers the section of the smoke channel, the bottom of the filter screen is connected to the lower edge of the recovery opening, and the top of the filter screen inclines towards the smoke outlet. The carbon spraying direction of the spraying motor is aligned with the top of the filter screen; the spraying motor sprays activated carbon into the flue gas channel, then the activated carbon falls on the filter screen, the falling speed is reduced, the flue gas adsorption time is prolonged, the activated carbon can return to the carbon storage box from the bottom end of the filter screen through the recovery opening, and the activated carbon is repeatedly sprayed out to fully adsorb the flue gas.

Description

TECHNICAL FIELD

[0001] The present application relates to the garbage incineration technical field, especially to a garbage incineration flue gas treatment device capable of improving the adsorption effect of activated carbon. BACKGROUND

[0002] In the flue gas treatment system of a garbage incineration power plant, trace amounts of dioxin exist in the flue gas, and even trace amounts of dioxin are very strong carcinogens to the human body, so activated carbon needs to be used to adsorb and neutralize dioxin. In the prior art, a spraying motor is installed below a storage tank, and activated carbon is directly sprayed into a pipeline for adsorption treatment, but the activated carbon sprayed by this method has unstable adsorption effect on dioxin in the flue gas, and too much activated carbon sprayed will lead to waste and make it difficult to accurately control the amount. SUMMARY

[0003] The present application provides a garbage incineration flue gas treatment device capable of improving the adsorption effect of activated carbon.

[0004] The technical scheme of the present application is a garbage incineration flue gas treatment device capable of improving the adsorption effect of activated carbon, which comprises a flue gas passage installed on a base, an inlet and an outlet are respectively arranged at both ends of the flue gas passage, a drainage fan is installed at the outlet, a carbon storage box containing activated carbon is arranged at the bottom of the inlet, a spraying port and a recovery port are arranged in the carbon storage box from top to bottom, a spraying motor for spraying activated carbon is installed at the spraying port, a filter screen is arranged in the flue gas passage, the filter screen covers the cross section of the flue gas passage, the bottom of the filter screen is connected to the lower edge of the recovery port, the top of the filter screen is inclined towards the outlet, and the spraying direction of the spraying motor is aligned with the top of the filter screen.

[0005] After the above structure, the flue gas is sucked into the flue gas channel from the smoke inlet by starting the drainage fan, and then the activated carbon in the storage box is sprayed from the carbon spraying port to the flue gas channel by starting the spraying motor to adsorb dioxin in the flue gas; the filter screen is arranged in the flue gas channel to cover the cross section, so that the flue gas can pass through the flue gas channel normally, and the spraying direction of the spraying motor is aligned with the top of the filter screen, and the sprayed activated carbon falls on the filter screen in the process of adsorbing the flue gas; since the bottom of the filter screen is connected to the lower edge of the recovery port, and the top is inclined to the smoke outlet direction, the activated carbon slides along the inclined filter screen, the rough surface of the filter screen slows down the sliding speed of the activated carbon, and the activated carbon has a longer time to adsorb the flue gas in the middle of the flue gas channel; the activated carbon sliding to the bottom end of the filter screen falls back into the storage box from the recovery port to be sprayed by the spraying motor to adsorb the flue gas again, so that the activated carbon can fully adsorb dioxin in the flue gas and reduce waste of activated carbon; the recovery port is arranged below the carbon spraying port, so that the activated carbon does not interfere with the carbon spraying during the sliding process along the filter screen; the spraying motor sprays the activated carbon into the flue gas channel, then slows down the falling speed on the filter screen, increases the adsorption time of the flue gas, and can also return to the storage box from the bottom of the filter screen through the recovery port, repeatedly sprays the activated carbon, so that the activated carbon can fully adsorb the flue gas and avoid waste.

[0006] As a further improvement of the utility model, the filter screen is provided with a reinforcing rib on the side facing the smoke outlet, and the reinforcing rib comprises a plurality of support rods which are longitudinally and transversely interlaced to form a grid structure.

[0007] After the above structure, the reinforcing rib is provided on the side of the filter screen facing the smoke outlet, and the reinforcing rib comprises a plurality of support rods which are longitudinally and transversely interlaced to form a grid structure, thereby improving the structural strength of the filter screen, slowing down the aging deformation of the filter screen, and ensuring that the activated carbon can slide along the flat surface of the filter screen.

[0008] As a further improvement of the utility model, a vibration motor is mounted on the reinforcing rib, and the outer side of the vibration motor is wrapped with an isolation cover connected with the reinforcing rib.

[0009] After the above structure, the vibration motor is mounted on the reinforcing rib, the vibration motor transmits vibration to the filter screen, accelerates the sliding of the activated carbon, and adjusts the sliding speed of the activated carbon by manually turning on and off the vibration motor; the outer side of the vibration motor is wrapped with an isolation cover to prevent the vibration motor from being eroded by the flue gas.

[0010] As a further improvement of the utility model, a plurality of protruding rods are arranged on the filter screen at intervals, the protruding rods are fixed on the side of the filter screen facing the smoke inlet, and the upward side of the protruding rods is provided with a protruding wedge surface.

[0011] With the above structure, the convex rods are arranged on the side of the filter screen facing the smoke inlet, the activated carbon in the carbon storage box at the bottom of the smoke inlet is sprayed to fall on the side of the filter screen, the activated carbon impacts the interval arranged convex rods during the sliding process, the piled activated carbon is scattered, and the surface of the activated carbon is fully contacted with the flue gas.

[0012] As a further improvement of the utility model, the filter screen comprises a connecting frame at the edge and a metal filter screen at the center, and the connecting frame is sealingly connected with the inner wall of the flue gas channel.

[0013] With the above structure, the filter screen is composed of the connecting frame at the edge and the metal filter screen at the center, the metal filter screen is not easy to be worn by the activated carbon, the connecting frame is sealingly connected with the inner wall of the flue gas channel, and the activated carbon cannot slide to the other side of the filter screen and return to the carbon storage box. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 shows the internal structure of the flue gas channel.

[0015] Fig. 2 shows the cross-sectional structure of the flue gas channel.

[0016] 1-flue gas channel, 2-smoke inlet, 3-smoke outlet, 4-carbon storage box, 5-carbon spraying port, 6-recovery port, 7-filter screen, 8-stiffener, 9-vibration motor, 10-convex rod. DETAILED DESCRIPTION

[0017] The utility model provides a kind of waste incineration flue gas treatment device capable of improving the adsorption effect of activated carbon, comprising smoke channel 1 installed on base, the both ends of the smoke channel 1 are equipped with smoke inlet 2 and smoke outlet 3 respectively, the smoke outlet 3 is installed with flow guide fan, the bottom of the smoke inlet 2 is equipped with carbon storage box 4 containing activated carbon, the carbon storage box 4 is sequentially equipped with carbon injection port 5 and recovery port 6 from top to bottom, the carbon injection port 5 is installed with injection motor for injecting activated carbon, the smoke channel 1 is equipped with filter screen 7, the filter screen 7 covers the cross section of smoke channel 1, the bottom of the filter screen 7 is connected to the lower edge of recovery port 6, the top is inclined to the direction of smoke outlet 3, and the carbon injection direction of the injection motor is aligned with the top of the filter screen 7. By starting the flow guide fan, the flue gas is sucked into the smoke channel 1 from the smoke inlet 2, and then the injection motor is started to inject the activated carbon in the carbon storage box 4 from the carbon injection port 5 into the smoke channel 1 to adsorb dioxin in the flue gas. By setting the filter screen 7 covering the cross section of the smoke channel 1 in the smoke channel 1, the flue gas can pass through the smoke channel 1 normally, and the carbon injection direction of the injection motor is aligned with the top of the filter screen 7, so that the injected activated carbon falls on the filter screen 7 during the adsorption of the flue gas. Since the bottom of the filter screen 7 is connected to the lower edge of the recovery port 6, and the top is inclined to the direction of the smoke outlet 3, the activated carbon will slide down along the inclined filter screen 7, and the rough surface of the filter screen 7 slows down the sliding speed of the activated carbon, so that the activated carbon has more time to adsorb the flue gas in the middle of the smoke channel 1. The activated carbon that slides to the bottom end of the filter screen 7 falls back into the carbon storage box 4 from the recovery port 6 for the injection motor to inject and adsorb the flue gas again, so that the activated carbon can fully adsorb dioxin in the flue gas and reduce waste of activated carbon. By setting the recovery port 6 below the carbon injection port 5, the activated carbon will not interfere with the carbon injection during the sliding process along the filter screen 7. The injection motor sprays the activated carbon into the smoke channel 1, then slows down the falling speed on the filter screen 7 to increase the adsorption time of the flue gas, and the activated carbon can also return to the carbon storage box from the bottom end of the filter screen 7 through the recovery port 6 to be sprayed repeatedly, so that the activated carbon can fully adsorb the flue gas and avoid waste.

[0018] The filter screen 7 is provided with reinforcing ribs 8 on the side facing the smoke outlet 3, and the reinforcing ribs 8 include a plurality of support rods which are longitudinally and transversely interlaced to form a grid structure.

[0019] By setting the reinforcing ribs 8 on the side of the filter screen 7 facing the smoke outlet 3, the reinforcing ribs 8 are formed by a plurality of support rods which are longitudinally and transversely interlaced to form a grid structure, thereby improving the structural strength of the filter screen 7, slowing down the aging deformation of the filter screen 7, and ensuring that the activated carbon can slide down along the flat surface of the filter screen 7.

[0020] The reinforcing rib 8 is provided with a vibration motor 9, and the outer side of the vibration motor 9 is wrapped with a isolation cover connected with the reinforcing rib 8.

[0021] The vibration motor 9 is installed on the reinforcing rib 8, and the vibration motor 9 transmits vibration to the filter screen 7 to accelerate the sliding of the activated carbon, and the sliding speed of the activated carbon is adjusted by manually turning on and off the vibration motor 9; the outer side of the vibration motor 9 is wrapped with a isolation cover to avoid the vibration motor 9 being eroded by the flue gas.

[0022] A plurality of convex rods 10 are arranged on the filter screen 7, the convex rods 10 are fixed on the side of the filter screen 7 facing the smoke inlet 2, and the side of the convex rods 10 facing upward is provided with a convex wedge surface.

[0023] The convex rods 10 are arranged on the side of the filter screen 7 facing the smoke inlet 2, the activated carbon in the carbon storage box 4 at the bottom of the smoke inlet 2 falls on this side of the filter screen 7, and the activated carbon impacts the interval arranged convex rods 10 during the sliding process, so that the piled activated carbon is scattered, and the surface of the activated carbon is fully contacted with the flue gas.

[0024] The filter screen 7 includes a connecting frame at the edge and a metal filter screen at the center, and the connecting frame is sealingly connected with the inner wall of the flue gas channel 1.

[0025] The filter screen 7 is composed of the connecting frame at the edge and the metal filter screen at the center, the metal filter screen is not easy to be worn by the activated carbon, and the connecting frame is sealingly connected with the inner wall of the flue gas channel 1, so that the activated carbon cannot slide to the other side of the filter screen 7 and cannot return to the carbon storage box 4.

Claims

1. A waste incineration flue gas treatment device that can improve the adsorption effect of activated carbon, comprising a flue gas channel (1) installed on a base, wherein the flue gas channel (1) is provided with a flue gas inlet and a flue gas outlet (3) at both ends, and a duct fan is installed at the flue gas outlet (3), characterized in that: The bottom of the smoke inlet (2) is provided with a charcoal storage box (4) containing activated carbon, the charcoal storage box (4) is sequentially provided with a charcoal injection port (5) and a recovery port (6) from top to bottom, the charcoal injection port (5) is provided with a jet motor for injecting activated carbon, the smoke channel (1) is provided with a filter screen (7), the filter screen (7) covers the cross section of the smoke channel (1), the bottom of the filter screen (7) is connected to the lower edge of the recovery port (6), the top is inclined to the direction of the smoke outlet, and the charcoal injection direction of the jet motor is aligned with the top of the filter screen (7).

2. The waste incineration flue gas treatment device capable of improving the adsorption effect of activated carbon according to claim 1, characterized in that: The filter screen (7) is provided with a reinforcing rib (8) on the side facing the smoke outlet (3), the reinforcing rib (8) comprises a plurality of support rods which are longitudinally and transversely interlaced to form a grid structure.

3. The waste incineration flue gas treatment device capable of improving the adsorption effect of activated carbon according to claim 2, characterized in that: The reinforcing rib (8) is provided with a vibration motor (9), and the outer side of the vibration motor (9) is wrapped with a isolation cover connected with the reinforcing rib (8).

4. The waste incineration flue gas treatment device capable of improving the adsorption effect of activated carbon according to claim 1, characterized in that: A plurality of convex rods (10) are arranged on the filter screen (7) at intervals, the convex rod (10) is fixed on the side of the filter screen (7) facing the smoke inlet (2), the side of the convex rod (10) facing upward is provided with a convex wedge surface. The filter screen (7) comprises a connecting frame at the edge and a metal filter screen at the center, and the connecting frame is sealingly connected with the inner wall of the smoke channel (1).

5. The waste incineration flue gas treatment device capable of improving the adsorption effect of activated carbon according to claim 1, characterized in that: ​

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