A dioxin waste gas treatment device

Abstract

The utility model discloses a dioxin waste gas treatment device, including an activated carbon conveying system and a waste gas conveying system. The activated carbon conveying system includes a carbon powder feeding device and an air jet device. The air jet device conveys the activated carbon powder discharged from the carbon powder feeding device to the waste gas conveying system through a feeding pipeline. The carbon powder feeding device includes a powder barrel. The powder barrel includes a conical hopper near the bottom discharge end. The waste gas conveying system is provided with a dust removal device. The dust removal device is used to filter dust particles in the waste gas conveying system. The carbon powder feeding device is provided with a stirring mechanism and a moisture-proof structure for preventing the activated carbon powder from being damp. The discharge end of the carbon powder feeding device is provided with a spiral meter and a one-way discharge structure. The spiral meter is used to adjust the discharge amount of the activated carbon powder. The activated carbon powder has good moisture resistance, the carbon powder injection amount can be adjusted, and the waste gas containing dioxins can be efficiently treated, and the greening and environmental protection effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of dioxin waste gas treatment, in particular to a dioxin waste gas treatment device. Background Art

[0002] Dioxin is a general term for chlorinated polynuclear aromatic compounds. This type of substance is neither artificially produced nor has any use. Instead, it is a by-product of combustion and various industrial production. It is usually caused by evaporation caused by the use of chlorophenols for wood preservation and prevention of schistosomiasis, emissions from the incineration industry, the use of defoliants, the preparation of pesticides, paper bleaching and automobile exhaust emissions. Waste gas containing dioxins is generated in industrial production. If it is directly discharged into the atmosphere, it will seriously endanger environmental safety. Therefore, it is urgent to develop a device that can quickly and efficiently treat waste gas containing dioxins. Utility Model Content

[0003] The utility model aims to provide a dioxin waste gas treatment device, which has good activated carbon powder moisture resistance, adjustable carbon powder injection amount, can efficiently treat waste gas containing dioxins, and has the effect of greening and environmental protection.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions: a dioxin waste gas treatment device, including an activated carbon delivery system and a waste gas delivery system, the activated carbon delivery system includes a carbon powder feeding device and an air jet device, the air jet device delivers the activated carbon powder discharged from the carbon powder feeding device to the waste gas delivery system through a feeding pipeline, the carbon powder feeding device includes a powder barrel, the powder barrel includes a conical hopper near the bottom discharge end, the waste gas delivery system is provided with a dust removal device, the dust removal device is used to filter the dust particles in the waste gas delivery system;

[0005] The carbon powder feeding device is provided with a stirring mechanism and a moisture-proof structure for preventing the activated carbon powder from getting damp. The discharge end of the carbon powder feeding device is provided with a spiral meter and a one-way discharge structure. The spiral meter is used to adjust the discharge amount of the activated carbon powder.

[0006] By adopting the above technical scheme, the moisture-proof structure can effectively prevent the activated carbon powder in the powder barrel from being damp and deteriorating. When the equipment is running, the activated carbon powder built into the powder barrel is discharged from the conical hopper at the bottom to the spiral metering device. The spiral metering device can accurately control the discharge amount of the activated carbon powder according to the needs, which is conducive to adapting and adjusting the adsorption amount of the activated carbon powder according to the waste gas containing different concentrations of dioxins, thereby reducing the use of activated carbon powder and reducing the use cost while ensuring that the dioxins are adsorbed. In addition, the airflow provided by the jet device blows the discharged activated carbon powder through the feeding pipe into the waste gas conveying system, and the activated carbon powder is used to adsorb dioxins, and the activated carbon powder particles adsorbed with dioxins are filtered through the dust removal device of the waste gas conveying system, so that the discharged gas can meet the emission standards. At the same time, a one-way discharge structure is set, which can effectively prevent the airflow ejected by the jet device from being reversed to the powder barrel, and has the effects of good moisture resistance of activated carbon powder, adjustable carbon powder injection amount, efficient treatment of waste gas containing dioxins, and greening and environmental protection.

[0007] The utility model is further configured as follows: the powder barrel is provided with a high material level detector and a low material level detector.

[0008] By adopting the above technical solution, the material level in the powder barrel can be monitored in real time using a high material level detector and a low material level detector, thereby reminding the operator to replenish the activated carbon powder in time or prevent the activated carbon powder from being overfilled.

[0009] The utility model is further configured as follows: a feeding pipe is provided on the top of the powder barrel, and a feeding control valve is provided on the feeding pipe; the moisture-proof structure comprises a drying chamber and a drying device; the drying chamber is sealed in the powder barrel and connected to the feeding pipe; the drying device is arranged in the drying chamber; a discharge pipe is connected to the bottom of the drying chamber, and the discharge pipe is provided with a discharge control valve.

[0010] By adopting the above technical solution, the activated carbon powder replenished from the feeding pipe can enter the drying chamber, and the activated carbon powder in the drying chamber is dehydrated and dried by the drying device. After drying for a predetermined time, the activated carbon powder falls into the powder barrel through the discharge pipe and is sealed and stored, which can ensure that the activated carbon powder always falls into the powder barrel in a dry state.

[0011] The utility model is further configured as follows: the side wall of the powder barrel is provided with a silo wall vibrating device for striking the side wall of the powder barrel, and the silo wall vibrating device comprises a plurality of air hammers arranged circumferentially around the powder barrel.

[0012] By adopting the above technical solution, multiple air hammers can be used to mechanically knock the four sides of the powder barrel to prevent the side wall of the powder barrel from sticking to the powder, thereby ensuring the smoothness of the falling of the activated carbon powder.

[0013] The utility model is further configured as follows: the one-way discharge structure is configured as a Venturi mixer connected to one side of the discharge end of the conical hopper.

[0014] By adopting the above technical solution, the activated carbon is sucked in by relying on the local negative pressure generated by the sudden compression and rapid expansion in the tube of the Venturi mixer. The system does not need air self-locking, which can avoid the phenomenon of activated carbon powder blowing back and realize the one-way downward feeding of activated carbon powder.

[0015] The utility model is further configured as follows: a flow detection device for detecting the amount of activated carbon powder discharged is provided at the discharge end of the venturi mixer, and the flow detection device is electrically connected to an alarm.

[0016] By adopting the above technical solution, the flow rate detection device can be used to monitor the amount of material falling at the discharge end of the Venturi mixer in real time. When the amount of material falling is abnormal, the powder jamming phenomenon will be promptly reported by means of an alarm.

[0017] The utility model is further configured as follows: the air jet device includes an air jet nozzle connected to one side of the inlet end of the feeding pipe, the discharge end of the powder barrel is connected between the air jet nozzle and the feeding pipe, and the side wall of the air jet nozzle is connected to an air pressure detection device.

[0018] By adopting the above technical solution, the airflow ejected from the air nozzle blows the activated carbon powder discharged from the discharge end of the powder barrel into the exhaust gas conveying system through the feeding pipe, and the air pressure detection device can monitor the air pressure in the air nozzle in real time.

[0019] The utility model is further configured as follows: the air nozzle branch is provided with a back-blowing pipeline, the air outlet end of the back-blowing pipeline is connected to the side wall of the conical hopper close to the discharge end, and a solenoid valve is provided on the back-blowing pipeline.

[0020] By adopting the above technical solution, when the solenoid valve is opened, part of the airflow in the air nozzle is blown to the bottom of the powder barrel through the back-blowing pipe, and the side wall of the discharge port at the bottom of the powder barrel is swept to solve the problem of powder stuck or hanging on the wall at the discharge port of the powder barrel.

[0021] The utility model is further configured as follows: the waste gas conveying system comprises a flue for conveying waste gas, the flue is configured in an "S" shape, and the outlet end of the feeding pipeline is connected to the flue.

[0022] By adopting the above technical solution, the flue arranged in an "S" shape can prolong the mixing time between the activated carbon powder and the waste gas containing dioxins, thereby increasing the adsorption efficiency of dioxins in the waste gas.

[0023] The utility model is further configured as follows: the dust removal device comprises a bag dust collector which is retractable and arranged in the flue, and the bag dust collector comprises a plurality of filter bags for filtering dust particles.

[0024] By adopting the above technical solution, the bag dust collector with a pull-out design can achieve rapid replacement of the filter bags.

[0025] In summary, the utility model has the following beneficial effects:

[0026] An activated carbon conveying system and an exhaust gas conveying system are set up. The activated carbon conveying system includes a carbon powder feeding device and an air jet device. The carbon powder feeding device includes a powder barrel. The exhaust gas conveying system is provided with a dust removal device. The carbon powder feeding device is provided with a stirring mechanism and a moisture-proof structure. The discharge end of the carbon powder feeding device is provided with a spiral meter and a one-way discharge structure. The moisture-proof structure can effectively prevent the activated carbon powder in the powder barrel from being damp and deteriorating. The spiral meter can accurately control the discharge amount of the activated carbon powder as needed, which is conducive to adapting and adjusting the adsorption amount of the activated carbon powder according to the exhaust gas containing different concentrations of dioxins, thereby ensuring that the dioxins are adsorbed. In this way, the amount of activated carbon powder used can be reduced and the cost of use can be reduced. The airflow provided by the jet device blows the discharged activated carbon powder through the feeding pipe to the exhaust gas conveying system, and the activated carbon powder is used to adsorb dioxins. The activated carbon powder particles adsorbed with dioxins are filtered through the dust removal device of the exhaust gas conveying system, so that the discharged gas can meet the emission standards. At the same time, a one-way discharge structure is set to effectively prevent the airflow ejected by the jet device from flowing back into the powder barrel. The activated carbon powder has good moisture resistance, the carbon powder injection amount is adjustable, the exhaust gas containing dioxins can be efficiently treated, and the greening and environmental protection effects are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the utility model.

[0028] Figure 2 It is the internal structure diagram of the utility model.

[0029] Figure 3 This utility model Figure 2 A partial enlarged view of area A.

[0030] In the figure: 1. Carbon powder feeding device; 11. Powder barrel; 111. Conical hopper; 112. High material level detector; 113. Low material level detector; 114. Feeding pipe; 1141. Feeding control valve; 115. Air hammer; 12. Stirring mechanism; 121. Mixer; 122. Stirring blade; 13. Moisture-proof structure; 131. Drying chamber; 132. Drying device; 133. Discharge pipe; 1331. Discharge control valve; 14. Venturi mixer; 15. Flow detection device; 151. Alarm; 16. Spiral meter; 2. Jet device; 20. Feeding pipeline; 21. Jet nozzle; 211. Air pressure detection device; 212. Backflush pipeline; 2121. Solenoid valve; 3. Flue; 31. Bag filter; 311. Filter bag. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings.

[0032] A dioxin waste gas treatment device, such as Figure 1 As shown, it includes an activated carbon conveying system and an exhaust gas conveying system. The activated carbon conveying system includes a carbon powder feeding device 1 and an air jet device 2. The air jet device 2 conveys the activated carbon powder discharged from the carbon powder feeding device 1 to the exhaust gas conveying system through a feeding pipe 20. The carbon powder feeding device 1 includes a powder barrel 11. The powder barrel 11 includes a conical hopper 111 near the bottom discharge end. The exhaust gas conveying system is provided with a dust removal device, which is used to filter dust particles in the exhaust gas conveying system; the carbon powder feeding device 1 is provided with a mixer 121 and a moisture-proof structure 13 for preventing the activated carbon powder from getting damp. The mixer structure 12 includes a mixer 121, and a plurality of layers of stirring blades 122 spaced from top to bottom on the output shaft of the mixer 121. The discharge end of the carbon powder feeding device 1 is provided with a spiral meter 16 and a one-way discharge structure, and the spiral meter 16 is used to adjust the discharge amount of the activated carbon powder; the powder barrel 11 is provided with a high material level detector 112 and a low material level detector 113. The high material level detector 112 and the low material level detector 113 can be used to monitor the material level in the powder barrel 11 in real time, so as to remind the operator to replenish the activated carbon powder in time or prevent the activated carbon powder from being overfilled.

[0033] like Figure 2-3As shown, a feeding pipe 114 is provided on the top of the powder barrel 11, and a feeding control valve 1141 is provided on the feeding pipe 114. The moisture-proof structure 13 includes a drying chamber 131 and a drying device 132. The drying chamber 131 is sealed in the powder barrel 11 and connected to the feeding pipe 114. The drying device 132 is arranged in the drying chamber 131. A discharge pipe 133 is connected to the bottom of the drying chamber 131. The discharge pipe 133 is provided with a discharge control valve 1331. The activated carbon powder replenished from the feeding pipe 114 can enter the drying chamber 131, and the activated carbon powder in the drying chamber 131 is dehydrated and dried by the drying device 132. After drying for a predetermined time, the activated carbon powder falls into the powder barrel 11 through the discharge pipe 133 and is sealed and stored, which can ensure that the activated carbon powder always falls into the powder barrel 11 in a dry state; the side wall of the powder barrel 11 is provided with a silo wall vibrating device for knocking the side wall of the powder barrel 11, and the silo wall vibrating device includes a silo wall vibrating device surrounding the powder barrel 11 A plurality of air hammers 115 are arranged in the circumferential direction, and the four sides of the powder barrel 11 can be mechanically knocked by using the multiple air hammers 115 to prevent the side wall of the powder barrel 11 from sticking powder, thereby ensuring the smoothness of the dropping of the activated carbon powder; the one-way discharge structure is provided with a Venturi mixer 14 connected to one side of the discharge end of the conical hopper 111, and the activated carbon is sucked in by the local negative pressure generated by the sudden compression and rapid expansion in the tube of the Venturi mixer 14. The system does not need air self-locking, so the back blowing of the activated carbon powder can be avoided, and the one-way downward feeding of the activated carbon powder can be realized; the discharge end of the Venturi mixer 14 is provided with a flow detection device 15 for detecting the discharge amount of the activated carbon powder, and the flow detection device 15 is electrically connected to the alarm 151. The flow detection device 15 can be used to monitor the discharge amount of the Venturi mixer 14 in real time. When the discharge amount is abnormal, the powder jamming phenomenon will be promptly reminded and fed back by the alarm 151.

[0034] like Figure 1-3As shown, the jet device 2 includes an air jet nozzle 21 connected to one side of the inlet end of the feeding pipe 20, the discharge end of the powder barrel 11 is connected between the air jet nozzle 21 and the feeding pipe 20, and the side wall of the air jet nozzle 21 is connected to an air pressure detection device 211, and the air flow ejected by the air jet nozzle 21 blows the activated carbon powder discharged from the discharge end of the powder barrel 11 into the exhaust gas conveying system through the feeding pipe 20, and the air pressure detection device 211 can monitor the air pressure in the air jet nozzle 21 in real time; the air jet nozzle 21 is branched with a back-blowing pipe 212, and the air outlet end of the back-blowing pipe 212 is connected to the side wall of the conical hopper 111 close to the discharge end, and the back-blowing pipe 212 is provided with an electromagnetic valve 2121, and when the electromagnetic valve 2121 is opened, part of the air flow in the air jet nozzle 21 The back-blowing pipe 212 is used to blow to the bottom of the powder barrel 11, and the side wall of the discharge port at the bottom of the powder barrel 11 is purged to solve the problem of powder stuck or hanging on the wall at the discharge port of the powder barrel 11; the exhaust gas conveying system includes a flue 3 for conveying exhaust gas, and the flue 3 is arranged in an "S" shape. The outlet end of the feeding pipe 20 is connected to the flue 3. The flue 3 arranged in an "S" shape can prolong the mixing time between the activated carbon powder and the exhaust gas containing dioxins, and increase the adsorption efficiency of dioxins in the exhaust gas; the dust removal device includes a bag dust collector 31 that can be pulled out and arranged in the flue 3. The bag dust collector 31 includes a plurality of filter bags 311 for filtering dust particles. The bag dust collector 31 with a pull-out design can realize the rapid replacement of the filter bags 311.

[0035] The basic working principle of the utility model is as follows: the moisture-proof structure 13 can effectively prevent the activated carbon powder in the powder barrel 11 from being damp and deteriorating. When the equipment is running, the activated carbon powder built into the powder barrel 11 is discharged from the conical funnel 111 at the bottom to the spiral metering device 16. The spiral metering device 16 can accurately control the discharge amount of the activated carbon powder as needed, which is conducive to adapting and adjusting the adsorption amount of the activated carbon powder according to the waste gas containing different concentrations of dioxins, thereby reducing the use of activated carbon powder and reducing the use cost while ensuring that dioxins are adsorbed. In addition, the jet device The airflow provided by the device 2 blows the unloaded activated carbon powder into the exhaust gas conveying system through the feeding pipe 20, uses the activated carbon powder to adsorb dioxins, and filters the activated carbon powder particles adsorbing dioxins through the dust removal device of the exhaust gas conveying system, so that the discharged gas can meet the emission standards. At the same time, a one-way discharge structure is set up to effectively prevent the airflow ejected by the jet device 2 from flowing back into the powder barrel 11, and the activated carbon powder has good moisture resistance, the carbon powder injection amount can be adjusted, and the exhaust gas containing dioxins can be efficiently treated, and the greening and environmental protection effects are achieved.

[0036] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A dioxin waste gas treatment device, comprising an activated carbon delivery system and a waste gas delivery system, characterized in that: The activated carbon conveying system comprises a carbon powder feeding device (1) and an air jet device (2), wherein the air jet device (2) conveys the activated carbon powder discharged from the carbon powder feeding device (1) to the exhaust gas conveying system through a feeding pipe (20), wherein the carbon powder feeding device (1) comprises a powder barrel (11), wherein the powder barrel (11) comprises a conical hopper (111) near the bottom discharge end, and the exhaust gas conveying system is provided with a dust removal device, wherein the dust removal device is used to filter dust particles in the exhaust gas conveying system; The carbon powder feeding device (1) is provided with a stirring mechanism (12) and a moisture-proof structure (13) for preventing the activated carbon powder from getting damp. The discharge end of the carbon powder feeding device (1) is provided with a spiral meter (16) and a one-way discharge structure. The spiral meter (16) is used to adjust the discharge amount of the activated carbon powder.

2. A dioxin waste gas treatment device according to claim 1, characterized in that: The powder barrel (11) is provided with a high material level detector (112) and a low material level detector (113).

3. A dioxin waste gas treatment device according to claim 1, characterized in that: The powder barrel (11) is provided with a feeding pipe (114) at the top, and the feeding pipe (114) is provided with a feeding control valve (1141). The moisture-proof structure (13) comprises a drying chamber (131) and a drying device (132). The drying chamber (131) is sealed in the powder barrel (11) and connected to the feeding pipe (114). The drying device (132) is arranged in the drying chamber (131). The bottom of the drying chamber (131) is connected with a discharge pipe (133), and the discharge pipe (133) is provided with a discharge control valve (1331).

4. A dioxin waste gas treatment device according to claim 1, characterized in that: The side wall of the powder barrel (11) is provided with a bin wall rapping device for striking the side wall of the powder barrel (11), and the bin wall rapping device comprises a plurality of air hammers (115) circumferentially arranged around the powder barrel (11).

5. The dioxin waste gas treatment equipment according to claim 1, characterized in that: The one-way discharge structure is configured as a Venturi mixer (14) connected to one side of the discharge end of the conical hopper (111).

6. A dioxin waste gas treatment device according to claim 5, characterized in that: The discharge end of the Venturi mixer (14) is provided with a flow detection device (15) for detecting the discharge amount of activated carbon powder, and the flow detection device (15) is electrically connected to an alarm (151).

7. The dioxin waste gas treatment equipment according to claim 1, characterized in that: The air jet device (2) comprises an air jet nozzle (21) connected to one side of the inlet end of the feeding pipe (20); the discharge end of the powder barrel (11) is connected between the air jet nozzle (21) and the feeding pipe (20); and the side wall of the air jet nozzle (21) is connected to an air pressure detection device (211).

8. A dioxin waste gas treatment device according to claim 7, characterized in that: The air jet nozzle (21) is branched with a back-blowing pipe (212), the air outlet end of the back-blowing pipe (212) is connected to the side wall of the conical hopper (111) close to the discharge end, and the back-blowing pipe (212) is provided with a solenoid valve (2121).

9. A dioxin waste gas treatment device according to claim 8, characterized in that: The waste gas conveying system comprises a flue (3) for conveying waste gas, the flue (3) being arranged in an "S" shape, and the outlet end of the feeding pipe (20) being connected to the flue (3).

10. A dioxin waste gas treatment device according to claim 9, characterized in that: The dust removal device comprises a bag dust collector (31) which is drawable and arranged in the flue (3); the bag dust collector (31) comprises a plurality of filter bags (311) for filtering dust particles.

Images