CN112377925A

CN112377925A - Environment-friendly type domestic garbage incinerator tail gas and slag treatment device and method thereof

Info

Publication number: CN112377925A
Application number: CN202011256050.8A
Authority: CN
Inventors: 王贵林
Original assignee: Zhuji Luohong Environmental Protection Technology Co ltd
Current assignee: Zhuji Luohong Environmental Protection Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-02-19

Abstract

The invention discloses an environment-friendly domestic garbage incinerator tail gas and slag treatment device, which comprises a chimney, a combustion-supporting gas access pipe and a slag discharge pipe, wherein the chimney is arranged on a garbage incinerator body; the tail gas waste heat exchange device comprises a horizontal tank, a hollow pipe is rotatably arranged in the horizontal tank and positioned between the left wall and the right wall of the horizontal tank, two ends of the hollow pipe extend out of the horizontal tank, the left end and the right end of the hollow pipe are respectively connected with a rotary joint A and a rotary joint B, an annular sleeve I is welded on the outer wall of the horizontal tank, a plurality of blades positioned in the annular sleeve I are welded on the outer wall of the hollow pipe, and the extending end of the hollow pipe is connected with an output shaft of a power unit A; the fly ash filtration device includes a rotating drum. The invention has the beneficial effects that: the tail gas waste heat and the slag waste heat can be efficiently utilized, the labor intensity of workers is reduced, and the filter screen is prevented from being blocked.

Description

Environment-friendly type domestic garbage incinerator tail gas and slag treatment device and method thereof

Technical Field

The invention relates to an environment-friendly device and a method for treating tail gas and slag of a household garbage incinerator.

Background

At present, with the rapid development of economic society, the living of residents is steadily improved, the yield of household garbage (especially urban household garbage) is sharply increased, and the garbage disposal requirement cannot be met by a simple garbage landfill mode, so most of household garbage at present is mainly incinerated by a garbage incinerator. When the garbage incinerator burns household garbage, a large amount of tail gas is discharged from a chimney of the garbage incinerator, and because the tail gas carries a large amount of toxic organic waste gas and fly ash, if the toxic organic waste gas and the fly ash are directly discharged into the atmosphere, atmospheric pollution is inevitably caused, so that the organic waste gas and the fly ash carried in the tail gas need to be filtered, and the organic waste gas and the fly ash are filtered and then discharged into the atmosphere.

At present, organic waste gas and fly ash in the treated tail gas are mainly treated by a dust remover, the dust remover comprises a vertical tank, a filter screen and a UV ultraviolet lamp tube, the filter screen is welded in the vertical tank, the UV ultraviolet lamp tube is arranged in the vertical tank and positioned above the filter screen, a tail gas inlet and a tail gas outlet are arranged on the side wall of the vertical tank, the tail gas inlet and the tail gas outlet are respectively arranged below and above the filter screen, the tail gas outlet is connected with a subordinate tail gas purification system through a pipeline, and the tail gas inlet is connected with a smoke exhaust pipe of an incinerator through a pipeline. During operation, the tail gas that burns the produced domestic waste of burning furnace discharges from its exhaust pipe, and the flying ash flows up along with tail gas, and when flying ash flow through the filter screen, the flying ash is intercepted in its below by the filter screen, and when tail gas passed the mesh of filter screen and entered into the filter screen top afterwards, the organic waste gas in the tail gas was decomposed to the ultraviolet lamp that UV ultraviolet fluorescent tube sent, makes organic gas decompose into carbon dioxide and water, and the tail gas after the processing flows out and enters into subordinate's tail gas clean system from the tail gas export to the processing of organic waste gas flying ash has been accomplished. However, with long-term operation, the fly ash adheres to a large amount below the filter screen, causing deterioration in air permeability of the filter screen, thereby reducing the filtering efficiency of the fly ash. In addition, the exhaust gas carries a large amount of heat, which is wasted if directly discharged to the atmosphere, and also causes an increase in the ambient temperature.

In addition, waste incinerator can leave a large amount of slags in the furnace body when burning rubbish, and the slag need carry out the landfill processing after discharging from the furnace body, need add chemical agent in to the slag before the landfill, through chemical agent in order to absorb the heavy metal in the slag to avoid heavy metal pollution groundwater resource, wherein, after chemical agent adds the slag in, still need to mix slag and chemical agent stirring, ensure fully to absorb heavy metal impurity. However, manual stirring is usually adopted to mix the two, which undoubtedly increases the labor intensity of workers, and after stirring, the mixture needs to be manually shoveled into a transport vehicle and transported into a soil pit by the transport vehicle, which undoubtedly further increases the labor intensity of workers. In addition, the slag carries a large amount of heat, and if the slag is directly buried in a soil pit, the waste of heat is undoubtedly caused. Therefore, a device capable of efficiently utilizing the waste heat of the tail gas and the waste heat of the furnace slag, reducing the labor intensity of workers and avoiding the blockage of the filter screen is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an environment-friendly domestic garbage incinerator tail gas and slag treatment device and method which are compact in structure, can efficiently utilize tail gas waste heat and slag waste heat, reduce labor intensity of workers, avoid filter screen blockage and are simple to operate.

The purpose of the invention is realized by the following technical scheme: an environment-friendly domestic garbage incinerator tail gas and slag treatment device comprises a chimney, a combustion-supporting gas access pipe and a slag discharge pipe, wherein the chimney is arranged on a garbage incinerator body, the chimney is sequentially provided with a tail gas waste heat exchange device, a fly ash filtering device and an organic gas decomposition device, and the slag discharge pipe is provided with a slag waste heat exchange device; the tail gas waste heat exchange device comprises a horizontal tank, a hollow pipe is rotatably arranged in the horizontal tank and positioned between the left wall and the right wall of the horizontal tank, two ends of the hollow pipe extend out of the horizontal tank, the left end and the right end of the hollow pipe are respectively connected with a rotary joint A and a rotary joint B, a plurality of blades positioned in the horizontal tank are welded on the outer wall of the hollow pipe, and the extending end of the hollow pipe is connected with an output shaft of a power unit A; the fly ash filtering device comprises a rotary drum, wherein the left end and the right end of the rotary drum are respectively provided with an air inlet pipe and an air outlet pipe, the rotary drum is supported on a plurality of roller supports and is connected with an output shaft of the power unit B, a buffer plate and a filter screen are welded in the rotary drum, and a plurality of through holes are formed in the buffer plate; the organic gas decomposition device comprises a vertical tank, wherein a rotary joint C is arranged at the top of the vertical tank, a motor D is fixedly mounted on the side wall of the vertical tank, an output shaft of the motor D extends into the vertical tank, a rotary table is mounted on the output shaft, a plurality of ultraviolet lamp tubes are fixedly arranged on the rotary table, and an exhaust pipe is arranged at the bottom of the vertical tank; the rotary joint A is connected with the chimney through a pipeline, the rotary joint B is connected with the air inlet pipe through a pipeline, and the air outlet pipe is connected with the rotary joint C through a pipeline;

the furnace slag waste heat exchange device comprises a spiral conveying device and an air blower, wherein an annular sleeve II is welded on the outer wall of a barrel of the spiral conveying device, an air outlet pipe and an air inlet pipe are respectively arranged at the top and the bottom of the annular sleeve II, the air inlet pipe is connected with an air outlet of the air blower through a pipeline, the air outlet pipe is connected with a combustion-supporting gas inlet pipe through a pipeline, a chemical agent adding port is arranged at the top of the barrel, a slag inlet and a slag discharging port are formed in the top of the barrel, the slag inlet is connected with a slag discharging pipe through a pipeline, the chemical agent adding port is arranged between the slag discharging port and the slag inlet, and the slag discharging port is arranged.

A plurality of fixing plates are welded on the inner wall of the hollow pipe along the axial direction of the hollow pipe, and S-shaped channels are formed between the fixing plates in an enclosing mode.

The power unit A comprises a motor A, a speed reducer A, a driving gear A and a driven gear A, an output shaft of the motor A is connected with an input shaft of the speed reducer A through a coupler, the driving gear A is installed on an output shaft of the speed reducer A, the driven gear A is installed on the extending end of the hollow pipe, and the driven gear A is meshed with the driving gear A.

The power unit B comprises a motor B, a speed reducer B, a driving gear B and a driven gear B, an output shaft of the motor B is connected with an input shaft of the speed reducer B through a coupler, the driving gear B is installed on an output shaft of the speed reducer B, the driven gear B is welded on the outer wall of the rotary drum, and the driven gear B is meshed with the driving gear B.

Each roller support comprises two bases supported on the ground, rollers are rotatably mounted on the bases, and the rotating drum is supported between the two rollers.

The spiral conveying device comprises a motor C and a barrel, the barrel is horizontally arranged, the left end and the right end of the barrel are sealed, a single spiral rod is rotatably arranged between the left end and the right end of the barrel in the barrel, the motor C is fixedly arranged on the outer end face of the barrel, and an output shaft of the motor C is connected with a rotating shaft of the single spiral rod through a coupling.

The bottom of horizontal jar, vertical jar and barrel all welds and has a plurality of supporting legs that support in subaerial.

The motor control system also comprises a controller, wherein the controller is electrically connected with input interfaces of the motor D, the motor A, the motor B and the motor C through signal wires.

The end face of the rotary table is fixedly provided with a plurality of lamp holders, each lamp holder is internally provided with an ultraviolet lamp tube, and the horizontal tank is provided with a water adding valve and a water outlet valve.

The method for treating tail gas and slag of the environment-friendly household garbage incinerator by the device comprises a tail gas treatment method and a slag treatment method:

the tail gas treatment method comprises the following steps:

s1, discharging tail gas generated by burning the household garbage in the garbage incinerator from a chimney;

s2, utilizing the waste heat of the tail gas, wherein an operator opens a motor A, the torque of the motor A is transmitted to a driving gear A after being reduced by a reducer A, the driving gear A drives a driven gear A to rotate, the driven gear A drives a hollow pipe to rotate, the rotating hollow pipe drives a blade to rotate, the blade stirs water in a horizontal tank, the discharged tail gas enters the hollow pipe through a chimney and a rotary joint A in sequence, the tail gas transmits the carried heat to the hollow pipe at the moment, the hollow pipe transmits the heat to water, the water is heated, the temperature of the tail gas is reduced, and the waste heat of the tail gas is utilized;

s3, filtering fly ash in the tail gas, wherein the tail gas in the step S2 enters the rotary drum through the rotary joint B and the air inlet pipe in sequence under air pressure, the tail gas passes through the through holes in the buffer plate and moves onto the filter screen after the buffer plate reduces the flow velocity of the tail gas, the tail gas passes through the meshes of the filter screen and flows out of the air outlet pipe, and the fly ash cannot pass through the filter screen and remains between the buffer plate and the filter screen, so that the tail gas is filtered;

s4, decomposing organic gas in the tail gas, wherein the tail gas flowing out of the rotary joint B in the step S3 passes through the rotary joint C and enters the vertical tank, the ultraviolet lamp tube and the motor D are turned on at the moment, the motor D drives the rotary disc to rotate, the rotary disc drives the ultraviolet lamp tube to rotate, the ultraviolet light emitted by the ultraviolet lamp tube decomposes the organic gas in the tail gas, and the decomposed organic gas is discharged from the exhaust pipe;

the slag treatment method comprises the following steps:

s1, discharging slag generated by burning the household garbage in the garbage incinerator from a slag discharge pipe, and placing a slag transport vehicle below a slag discharge port;

s2, enabling discharged slag to enter the cylinder through the slag inlet, opening the motor C, driving the single screw rod to rotate by the motor C, driving the slag to move towards the slag outlet by the single screw rod, adding a chemical agent into the cylinder through the chemical agent adding inlet, mixing the chemical agent with the slag under the stirring of the single screw rod, discharging the mixture from the slag outlet, and enabling the discharged mixture to fall into a slag transport vehicle, so that the treatment of the slag is realized;

s3, in the step S2, the blower is turned on, the blower sends outside air into the annular sleeve II, slag in the barrel transfers heat to the barrel, the barrel transfers heat to air in the annular sleeve II, and the heated air enters the garbage incinerator through the air outlet pipe and the combustion-supporting gas inlet pipe.

The invention has the following advantages:

1. the outer wall of the hollow pipe is welded with a plurality of blades positioned in the horizontal tank, and the extension end of the hollow pipe is connected with an output shaft of the power unit A; the blades stir water in the horizontal tank, and exhausted tail gas enters the hollow pipe through the chimney and the rotary joint A in sequence, at the moment, the tail gas transfers heat carried by the tail gas to the hollow pipe, the hollow pipe transfers the heat to water, so that the water is heated, the temperature of the tail gas is reduced, and the utilization of the waste heat of the tail gas is realized; the water that is heated can be used for the workman again, consequently very big energy saving, and in addition, the fixed plate encloses into S-shaped passageway, has increased the stroke of tail gas, and the blade stirs water, increases water and thermal area of contact, consequently very big improvement tail gas waste heat' S utilization ratio.

2. The fly ash filtering device comprises a rotary drum, wherein the left end and the right end of the rotary drum are respectively provided with an air inlet pipe and an air outlet pipe, the rotary drum is supported on a plurality of roller holders, each roller holder comprises two bases supported on the ground, rollers are rotatably arranged on the bases, the rotary drum is supported between the two rollers and is connected with an output shaft of a power unit B, a buffer plate and a filter screen are welded in the rotary drum, and a plurality of through holes are formed in the buffer plate; the torque of the motor B is transmitted to the driving gear B after being reduced by the speed reducer B, the driving gear B drives the driven gear B to rotate, the driven gear B drives the rotary drum to rotate around the axis of the driven gear B, the rotary drum drives the filter screen to rotate, the filter screen performs centrifugal motion at the moment, and the fly ash attached to the filter screen is thrown off, so that the fly ash blocked in the mesh is dredged, the filter screen is prevented from being blocked, and the smooth passing of tail gas is ensured.

3. The furnace slag waste heat exchange device comprises a spiral conveying device and an air blower, wherein an annular sleeve II is welded on the outer wall of a barrel of the spiral conveying device, an air outlet pipe and an air inlet pipe are respectively arranged at the top and the bottom of the annular sleeve II, the air inlet pipe is connected with an air outlet of the air blower through a pipeline, the air outlet pipe is connected with a combustion-supporting gas inlet pipe through a pipeline, and a chemical agent feeding port, a slag inlet and a slag discharge port are arranged at the top of the barrel; the motor C drives the single screw rod to rotate, the single screw rod drives the slag to move towards the direction of the slag discharging port, then the chemical agent is added into the barrel through the chemical agent adding port, the chemical agent is mixed with the slag under the stirring of the single screw rod, the mixture is discharged from the slag discharging port, and the discharged mixture falls into the slag transport vehicle, so that the treatment of the slag is realized; therefore, the chemical agents and the slag do not need to be stirred manually, and the materials are conveyed to the transport vehicle while being stirred by the single screw rod, so that the labor intensity of workers is greatly reduced.

4. The air blower of the invention sends the outside air into the annular sleeve II, the furnace slag in the cylinder transfers the heat to the cylinder, the cylinder transfers the heat to the air in the annular sleeve II, and the heated air enters the garbage incinerator through the air outlet pipe and the combustion-supporting gas inlet pipe. Because the air is heated by the waste heat of the slag, the heated air can pre-dry the domestic garbage in the furnace body, and the fuel used for burning the garbage is reduced, so that the utilization rate of the slag is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic structural diagram of a tail gas waste heat exchange device;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a schematic view of the construction of a fly ash filtration unit;

FIG. 6 is a front view of FIG. 5;

FIG. 7 is a cross-sectional view A-A of FIG. 5;

FIG. 8 is a schematic structural view of a buffer plate;

FIG. 9 is a schematic structural view of an organic gas decomposition device;

FIG. 10 is a front view of FIG. 9;

FIG. 11 is a schematic structural diagram of a slag waste heat exchange device;

FIG. 12 is a front view of FIG. 11;

in the figure, 1-a garbage incinerator, 2-a chimney, 3-a combustion-supporting gas access pipe, 4-a slag discharge pipe, 5-a tail gas waste heat exchange device, 6-a fly ash filter device, 7-an organic gas decomposition device, 8-a slag waste heat exchange device, 9-a horizontal tank, 10-a hollow pipe, 11-a rotary joint A, 12-a rotary joint B, 14-a blade, 15-a rotary drum, 16-an air inlet pipe, 17-an air outlet pipe, 18-a roller support, 19-a buffer plate, 20-a filter screen, 21-a through hole, 22-a vertical tank, 23-a rotary joint C, 24-a motor D, 25-a rotary table, 26-a lamp tube, 27-an air outlet pipe, 28-a spiral conveying device, 29-an air blower and 30-an annular sleeve II, 31-air outlet pipe, 32-air inlet pipe, 33-chemical agent inlet, 34-slag inlet, 35-slag outlet, 36-fixing plate, 37-motor A, 38-reducer A, 39-driving gear A, 40-driven gear A, 41-motor B, 42-reducer B, 43-driving gear B, 44-driven gear B, 45-base, 46-roller, 47-motor C, 48-barrel, 49-single screw rod, 50-water feeding valve and 51-water outlet valve.

Detailed Description

The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:

as shown in fig. 1 to 12, an environment-friendly domestic waste incinerator tail gas and slag treatment device comprises a chimney 2, a combustion-supporting gas access pipe 3 and a slag discharge pipe 4 which are arranged on a body of a waste incinerator 1, wherein a tail gas waste heat exchange device 5, a fly ash filtering device 6 and an organic gas decomposition device 7 are sequentially arranged at the chimney 2, and a slag waste heat exchange device 8 is arranged at the slag discharge pipe 4; tail gas waste heat exchange device 5 includes horizontal jar 9, the hollow tube 10 is installed in the rotation of just being located between its left and right walls in the horizontal jar 9, and the both ends of hollow tube 10 all extend in horizontal jar 9 outsidely, and its left and right sides end is connected with rotary joint A11 and rotary joint B12 respectively, and the welding has a plurality of blades 14 that are located horizontal jar 9 on the outer wall of hollow tube 10, and the extension end of hollow tube 10 is connected with power unit A's output shaft. The power unit A comprises a motor A37, a speed reducer A38, a driving gear A39 and a driven gear A40, an output shaft of the motor A37 is connected with an input shaft of the speed reducer A38 through a coupler, the driving gear A39 is installed on an output shaft of the speed reducer A38, the driven gear A40 is installed on the extending end of the hollow pipe 10, and the driven gear A40 is meshed with the driving gear A39

The fly ash filtering device 6 comprises a rotary drum 15, the left end and the right end of the rotary drum 15 are respectively provided with an air inlet pipe 16 and an air outlet pipe 17, the rotary drum 15 is supported on a plurality of roller holders 18, each roller holder 18 comprises two base 45 supported on the ground, a roller 46 is rotatably mounted on each base 45, the rotary drum 15 is supported between the two rollers 46, the rotary drum 15 is connected with an output shaft of a power unit B, a buffer plate 19 and a filter screen 20 are welded in the rotary drum 15, and a plurality of through holes 21 are formed in the buffer plate 19; the organic gas decomposition device 7 comprises a vertical tank 22, a rotary joint C23 is arranged at the top of the vertical tank 22, a motor D24 is fixedly installed on the side wall of the vertical tank 22, an output shaft of the motor D24 extends into the vertical tank 22, a turntable 25 is installed on the output shaft, a plurality of ultraviolet lamp tubes 26 are fixedly arranged on the turntable 25, and an exhaust pipe 27 is arranged at the bottom of the vertical tank 22; the rotary joint A11 is connected with the chimney 2 through a pipeline, the rotary joint B12 is connected with the air inlet pipe 16 through a pipeline, and the air outlet pipe 17 is connected with the rotary joint C23 through a pipeline. The power unit B comprises a motor B41, a speed reducer B42, a driving gear B43 and a driven gear B44, an output shaft of the motor B41 is connected with an input shaft of a speed reducer B42 through a coupler, a driving gear B43 is installed on an output shaft of the speed reducer B42, the driven gear B44 is welded on the outer wall of the rotary drum 15, and a driven gear B44 is meshed with the driving gear B43

Slag waste heat exchange device 8 includes screw conveyer 28 and air-blower 29, the welding has annular cover II30 on the outer wall of screw conveyer 28's barrel 48, the top and the bottom of annular cover II30 are provided with air outlet pipe 31 and air admission pipe 32 respectively, air admission pipe 32 is through the pipe connection with the air exit of air-blower 29, air outlet pipe 17 is connected with combustion-supporting gas access pipe 3 pipe way, the top of barrel 48 is provided with chemical agent and adds the mouth 33, advance sediment mouth 34 and row sediment mouth 35, it is connected with row sediment pipe 4 pipe way to advance sediment mouth 34, chemical agent adds the mouth 33 and sets up between row sediment mouth 35 and advancing sediment mouth 34, it sets up in the bottom of barrel 48 to arrange the sediment mouth 35. Auger delivery device 28 includes motor C47 and barrel 48, barrel 48 level sets up, and the tip all seals about barrel 48, and rotatory single hob 49 of installing between just being located its left and right ends in barrel 48, motor C47 fixed mounting is on the outer terminal surface of barrel 48, and motor C47's output shaft and a pivot of single hob 49 are through the coupling joint. A plurality of lamp holders are fixedly arranged on the end surface of the rotary disc 25, an ultraviolet lamp tube 26 is arranged in each lamp holder, and a water adding valve 50 and a water outlet valve 51 are arranged on the horizontal tank 9

A plurality of fixing plates 36 are welded on the inner wall of the hollow pipe 10 along the axial direction of the hollow pipe, and S-shaped channels are defined between the fixing plates 36. The bottom of the horizontal tank 9, the vertical tank 22 and the cylinder 48 are welded with a plurality of support legs supported on the ground. The motor control system also comprises a controller, wherein the controller is electrically connected with input interfaces of the motor D24, the motor A37, the motor B41 and the motor C47 through signal wires.

the tail gas treatment method comprises the following steps:

s1, discharging tail gas generated by burning the household garbage in the garbage incinerator from a chimney 2;

s2, utilizing the waste heat of the tail gas, wherein an operator opens a motor A37, the torque of the motor A37 is transmitted to a driving gear A39 after being reduced by a reducer A38, the driving gear A39 drives a driven gear A40 to rotate, the driven gear A40 drives a hollow pipe 10 to rotate, the rotating hollow pipe 10 drives a blade 14 to rotate, the blade 14 stirs water in a horizontal tank 9, the discharged tail gas enters the hollow pipe 10 through a chimney 2 and a rotary joint A11 in sequence, the tail gas transmits the carried heat to the hollow pipe 10, the hollow pipe 10 transmits the heat to water, the water is heated, the temperature of the tail gas is reduced, and the waste heat of the tail gas is utilized; in addition, the fixing plate 36 encloses an S-shaped channel, so that the stroke of the tail gas is increased, the blades 14 stir the water, the contact area of the water and the heat is increased, and the utilization rate of the waste heat of the tail gas is greatly improved;

s3, filtering fly ash in the tail gas, wherein the tail gas in the step S2 enters the rotary drum 15 through the rotary joint B12 and the air inlet pipe 16 in sequence under air pressure, after the flow speed of the tail gas is reduced by the buffer plate 19, the tail gas passes through the through holes 21 on the buffer plate 19 and moves to the filter screen 20, the tail gas passes through the meshes of the filter screen 20 and flows out of the air outlet pipe 17, and the fly ash cannot pass through the filter screen 20 and remains between the buffer plate 19 and the filter screen 20, so that the tail gas is filtered; after working for a period of time, the motor B41 is turned on, the torque of the motor B41 is transmitted to the driving gear B43 after being reduced by the reducer B42, the driving gear B43 drives the driven gear B44 to rotate, the driven gear B44 drives the rotary drum 15 to rotate around the axis of the rotary drum, the rotary drum 15 drives the filter screen 20 to rotate, at the moment, the filter screen 20 makes centrifugal motion, and the filter screen 20 throws away the fly ash attached to the filter screen, so that the fly ash blocked in the mesh is dredged, the filter screen is prevented from being blocked, and the smooth passing of tail gas;

s4, decomposing organic gas in the tail gas, wherein the tail gas flowing out of the rotary joint B12 in the step S3 passes through the rotary joint C23 and enters the vertical tank 22, the ultraviolet lamp tube 26 and the motor D24 are turned on at the moment, the motor D24 drives the rotary disc 25 to rotate, the rotary disc 25 drives the ultraviolet lamp tube 26 to rotate, the ultraviolet light emitted by the ultraviolet lamp tube 26 decomposes the organic gas in the tail gas, and the decomposed organic gas is discharged from the exhaust pipe 27; the rotating ultraviolet lamp 26 can emit ultraviolet light from multiple angles, so that organic gas can be decomposed in all directions;

the slag treatment method comprises the following steps:

s1, discharging slag generated by burning the household garbage in the garbage incinerator from the slag discharge pipe 4, and placing a slag transport vehicle below the slag discharge port 35;

s2, enabling discharged slag to enter the cylinder 48 through the slag inlet 34, opening the motor C47, enabling the motor C47 to drive the single screw rod 49 to rotate, enabling the single screw rod 49 to drive the slag to move towards the slag outlet 35, then adding a chemical agent into the cylinder 48 through the chemical agent adding inlet 33, mixing the chemical agent with the slag under the stirring of the single screw rod 49, discharging the mixture from the slag outlet 35, and enabling the discharged mixture to fall into a slag transport vehicle, so that the slag is treated; therefore, the chemical agent and the slag are not required to be stirred manually, the materials are conveyed to the transport vehicle while being stirred by the single screw rod 49, the labor intensity of workers is greatly reduced,

s3, in the step S2, the blower 29 is turned on, the blower 29 sends outside air into the annular sleeve II30, slag in the cylinder 48 transfers heat to the cylinder 48, the cylinder 48 transfers heat to air in the annular sleeve II30, and the heated air enters the garbage incinerator through the air outlet pipe 17 and the combustion-supporting air inlet pipe 3. Because the air is heated by the waste heat of the slag, the heated air can pre-dry the domestic garbage in the furnace body, and the fuel used for burning the garbage is reduced, so that the utilization rate of the slag is improved.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides an environment-friendly domestic waste incinerator tail gas and slag processing apparatus, it inserts pipe (3) and arranges slag pipe (4) including setting up chimney (2), combustion-supporting gas on waste incinerator (1) furnace body, its characterized in that: a tail gas waste heat exchange device (5), a fly ash filtering device (6) and an organic gas decomposition device (7) are sequentially arranged at the chimney (2), and a slag waste heat exchange device (8) is arranged at the slag discharge pipe (4); the tail gas waste heat exchange device (5) comprises a horizontal tank (9), a hollow pipe (10) is rotatably mounted in the horizontal tank (9) and located between the left wall and the right wall of the horizontal tank, two ends of the hollow pipe (10) extend to the outside of the horizontal tank (9), the left end and the right end of the hollow pipe are respectively connected with a rotary joint A (11) and a rotary joint B (12), a plurality of blades (14) located in the horizontal tank (9) are welded on the outer wall of the hollow pipe (10), and the extending end of the hollow pipe (10) is connected with an output shaft of a power unit A; the fly ash filtering device (6) comprises a rotary drum (15), wherein the left end and the right end of the rotary drum (15) are respectively provided with an air inlet pipe (16) and an air outlet pipe (17), the rotary drum (15) is supported on a plurality of roller supports (18), the rotary drum (15) is connected with an output shaft of the power unit B, a buffer plate (19) and a filter screen (20) are welded in the rotary drum (15), and a plurality of through holes (21) are formed in the buffer plate (19); the organic gas decomposition device (7) comprises a vertical tank (22), a rotary joint C (23) is arranged at the top of the vertical tank (22), a motor D (24) is fixedly installed on the side wall of the vertical tank (22), an output shaft of the motor D (24) extends into the vertical tank (22), a rotary disc (25) is installed on the output shaft, a plurality of ultraviolet lamp tubes (26) are fixedly arranged on the rotary disc (25), and an exhaust pipe (27) is arranged at the bottom of the vertical tank (22); the rotary joint A (11) is connected with the chimney (2) through a pipeline, the rotary joint B (12) is connected with the air inlet pipe (16) through a pipeline, and the air outlet pipe (17) is connected with the rotary joint C (23) through a pipeline;

slag waste heat exchange device (8) include screw conveyer (28) and air-blower (29), the welding has annular cover II (30) on the outer wall of barrel (48) of screw conveyer (28), the top and the bottom of annular cover II (30) are provided with air outlet duct (31) and air admission pipe (32) respectively, air admission pipe (32) are connected with the air exit of air-blower (29) through the pipeline, air outlet duct (17) and combustion-supporting gas access pipe (3) are connected through the pipeline, the top of barrel (48) is provided with chemical agent and adds entry (33), advance cinder notch (34) and row cinder notch (35), it is connected with row cinder pipe (4) through the pipeline to advance cinder notch (34), chemical agent adds entry (33) and sets up between row cinder notch (35) and advance cinder notch (34), arrange cinder notch (35) and set up in the bottom of barrel (48).

2. The environment-friendly domestic waste incinerator tail gas and slag treatment device and method thereof of claim 1, wherein: a plurality of fixing plates (36) are welded on the inner wall of the hollow pipe (10) along the axial direction of the hollow pipe, and S-shaped channels are defined between the fixing plates (36).

3. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: the power unit A comprises a motor A (37), a speed reducer A (38), a driving gear A (39) and a driven gear A (40), an output shaft of the motor A (37) is connected with an input shaft of the speed reducer A (38) through a coupler, the driving gear A (39) is installed on an output shaft of the speed reducer A (38), the driven gear A (40) is installed on the extending end of the hollow pipe (10), and the driven gear A (40) is meshed with the driving gear A (39).

4. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: the power unit B comprises a motor B (41), a speed reducer B (42), a driving gear B (43) and a driven gear B (44), an output shaft of the motor B (41) is connected with an input shaft of the speed reducer B (42) through a coupler, the driving gear B (43) is installed on an output shaft of the speed reducer B (42), the driven gear B (44) is welded on the outer wall of the rotary drum (15), and the driven gear B (44) is meshed with the driving gear B (43).

5. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: each roller support (18) comprises two bases (45) supported on the ground, rollers (46) are rotatably mounted on the bases (45), and the rotary drum (15) is supported between the two rollers (46).

6. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: screw conveyor (28) include motor C (47) and barrel (48), barrel (48) level sets up, and the tip all seals about barrel (48), and rotatory single hob (49) of installing between just being located it about in barrel (48), motor C (47) fixed mounting is on the outer terminal surface of barrel (48), and the output shaft of motor C (47) and a pivot of single hob (49) are through the coupling joint.

7. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: the bottom of the horizontal tank (9), the vertical tank (22) and the cylinder (48) are welded with a plurality of support legs supported on the ground.

8. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: the motor control system also comprises a controller, wherein the controller is electrically connected with input interfaces of the motor D (24), the motor A (37), the motor B (41) and the motor C (47) through signal wires.

9. The environment-friendly domestic waste incinerator tail gas and slag processing apparatus of claim 1, characterized in that: the end face of the rotary disc (25) is fixedly provided with a plurality of lamp holders, each lamp holder is internally provided with an ultraviolet lamp tube (26), and the horizontal tank (9) is provided with a water adding valve (50) and a water outlet valve (51).

10. The method for treating tail gas and slag of an environment-friendly domestic garbage incinerator according to any one of claims 1 to 9, characterized in that: the method comprises a tail gas treatment method and a slag treatment method:

the tail gas treatment method comprises the following steps:

s1, discharging tail gas generated by burning the household garbage in the garbage incinerator from a chimney (2);

s2, the utilization of the waste heat of the tail gas, an operator opens a motor A (37), the torque of the motor A (37) is reduced by a speed reducer A (38) and then transmitted to a driving gear A (39), the driving gear A (39) drives a driven gear A (40) to rotate, the driven gear A (40) drives a hollow pipe (10) to rotate, the rotating hollow pipe (10) drives a blade (14) to rotate, the blade (14) stirs water in a horizontal tank (9), the discharged tail gas enters the hollow pipe (10) through a chimney (2) and a rotary joint A (11) in sequence, the heat carried by the tail gas is transmitted to the hollow pipe (10), the heat is transmitted to water by the hollow pipe (10), the water is heated, the temperature of the tail gas is reduced, and the utilization of the waste heat of the tail gas is achieved;

s3, filtering fly ash in the tail gas, wherein the tail gas in the step S2 enters the rotary drum (15) through the rotary joint B (12) and the air inlet pipe (16) in sequence under the air pressure, the tail gas passes through the through holes (21) in the buffer plate (19) and moves to the filter screen (20) after the flow velocity of the tail gas is reduced by the buffer plate (19), the tail gas passes through the meshes of the filter screen (20) and flows out of the air outlet pipe (17), and the fly ash cannot pass through the filter screen (20) and remains between the buffer plate (19) and the filter screen (20), so that the tail gas is filtered;

s4, decomposing organic gas in the tail gas, wherein the tail gas flowing out of the rotary joint B (12) in the step S3 passes through the rotary joint C (23) and enters the vertical tank (22), the ultraviolet lamp tube (26) and the motor D (24) are turned on at the moment, the motor D (24) drives the rotary disc (25) to rotate, the rotary disc (25) drives the ultraviolet lamp tube (26) to rotate, the ultraviolet light emitted by the ultraviolet lamp tube (26) decomposes the organic gas in the tail gas, and the decomposed organic gas is discharged from the exhaust pipe (27);

the slag treatment method comprises the following steps:

s1, discharging slag generated by burning the household garbage in the garbage incinerator from a slag discharge pipe (4), and placing a slag transport vehicle below a slag discharge port (35);

s2, enabling discharged slag to enter the barrel body (48) through the slag inlet (34), opening the motor C (47), enabling the motor C (47) to drive the single screw rod (49) to rotate, enabling the single screw rod (49) to drive the slag to move towards the slag outlet (35), adding a chemical agent into the barrel body (48) through the chemical agent adding port (33), mixing the chemical agent with the slag under the stirring of the single screw rod (49), discharging the mixture from the slag outlet (35), and enabling the discharged mixture to fall into a slag transport vehicle, so that the slag is treated;

s3, in the step S2, the blower (29) is turned on, the blower (29) sends outside air into the annular sleeve II (30), slag in the cylinder (48) transfers heat to the cylinder (48), the cylinder (48) transfers heat to air in the annular sleeve II (30), and the heated air enters the garbage incinerator through the air outlet pipe (17) and the combustion-supporting air inlet pipe (3).