CN114838356A

CN114838356A - Garbage incinerator

Info

Publication number: CN114838356A
Application number: CN202210501958.3A
Authority: CN
Inventors: 武金玉; 邹庐泉; 顾士贞; 吴碧龙; 吴天宇
Original assignee: Shanghai Environment Group Renewable Energy Operation Management Co ltd
Current assignee: Shanghai Environment Group Renewable Energy Operation Management Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-02

Abstract

The invention discloses a garbage incinerator which comprises a hearth, an air blowing device, a grate mechanism and a rotary drum mechanism arranged above the grate mechanism, wherein a feed hopper and a slag discharge port are respectively arranged on two sides of the hearth; the grate mechanism comprises a reverse-push grate which is obliquely and downwards arranged at the drying section and the burning section of the hearth, and a first forward-push grate and a second forward-push grate which are arranged at the burning section of the hearth, wherein the first forward-push grate is connected with the reverse-push grate end to end, the tail end of the second forward-push grate is arranged on the slag discharge port, and the reverse-push grate, the first forward-push grate and the second forward-push grate stir and crush the garbage during burning through a rotating drum mechanism so as to fully burn the garbage. The stirring and raking device can stir and rake the garbage raw materials and the slag, and prevent the slag from being accumulated; and greatly increase the heated area of the garbage, improve the combustion efficiency and save the energy.

Description

Garbage incinerator

Technical Field

The invention relates to the technical field of waste incineration, in particular to a waste incinerator.

Background

In order to improve the utilization rate of resources, the garbage incinerator is adopted to replace garbage landfill, the garbage incinerator is a key device for changing waste into valuable, and the final purpose of garbage incineration is to realize harmless, reduction and recycling of garbage.

The garbage incinerator in the prior art is internally provided with a reverse-push grate, a forward-push grate and a grate form combined with various grates, the energy utilization rate of the conventional incinerator is low, the problem of easy coking and dust deposition exists in a hearth, the incineration effect of garbage can be influenced by a large amount of slag, the inner wall of the hearth can be corroded, and the service life of the incinerator is shortened.

Disclosure of Invention

The invention aims to provide a garbage incinerator to solve the technical problems that in the prior art, the energy utilization rate of incineration is low, and coking and dust deposition are easy to occur in a hearth.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

the invention provides a garbage incinerator which comprises a hearth, an air blowing device arranged at the lower end of the hearth, a grate mechanism arranged in the hearth and a rotary drum mechanism arranged above the grate mechanism, wherein the grate mechanism is arranged above the air blowing device, a feed hopper and a slag discharge port are respectively arranged on two sides of the hearth, and garbage introduced from the feed hopper enters the grate mechanism to be incinerated by the air blowing device and becomes ash after being burned out and flows out of the slag discharge port;

the grate mechanism comprises a reverse-push grate which is obliquely and downwards arranged at the drying section and the burning section of the hearth, and a first forward-push grate and a second forward-push grate which are arranged at the burning section of the hearth, the first forward-push grate is connected with the reverse-push grate end to end, the second forward-push grate is arranged below the first forward-push grate, the tail end of the second forward-push grate is arranged on the slag discharging port, and the reverse-push grate, the first forward-push grate and the second forward-push grate stir and crush the garbage during burning through the rotating drum mechanism so as to fully burn the garbage.

As a preferred scheme of the invention, one end of the reverse-push grate is connected with the feed hopper, and the other end of the reverse-push grate sequentially and obliquely penetrates through the drying section and the combustion section of the hearth downwards and is arranged above the first forward-push grate in a superposed manner.

As a preferable scheme of the invention, the first forward-pushing fire grate and the second forward-pushing fire grate are both rotatably arranged in the hearth through an integrated power device, the rotating directions of the first forward-pushing fire grate and the reverse-pushing fire grate are opposite, and the first forward-pushing fire grate and the second forward-pushing fire grate are both horizontally arranged.

As a preferable scheme of the invention, the lower side of the second forward-push grate is provided with a heat exchange tube, and the heat exchange tube is wrapped and arranged below the second forward-push grate.

As a preferred scheme of the present invention, the air blowing device includes a hot air blower installed below the reverse-thrust fire grate and an air cooler installed below the second forward-thrust fire grate, the hot air blower supplements hot air to the garbage on the reverse-thrust fire grate, and the air cooler cools the slag on the second forward-thrust fire grate.

As a preferable scheme of the invention, the drum mechanism transversely penetrates through the hearth and is arranged above the first forward-push fire grate and the second forward-push fire grate, and the drum mechanism is connected with a secondary fan through an air supplementing pipe.

As a preferable scheme of the invention, the furnace also comprises a sludge grate, wherein the sludge grate is arranged at the top of the hearth and is arranged above the rotary drum mechanism.

As a preferable scheme of the present invention, the drum mechanism includes a first drum, a second drum, a third drum, and an integrated rotating device for driving the first drum, the second drum, and the third drum, the first drum transversely penetrates through the furnace, the first drum is disposed in front of the sludge fire grate, the second drum is mounted at the end of the first forward-pushing fire grate in a suspended manner, the third drum is mounted at the end of the second forward-pushing fire grate in a suspended manner, and the air supply pipe axially penetrates through the first drum.

In a preferred embodiment of the present invention, the first drum, the second drum, and the third drum are provided with saw teeth.

As a preferable mode of the present invention, the integrated rotating device includes a first rotating tooth rotatably mounted on the furnace wall of the furnace, a second rotating tooth engaged with the rotating tooth, and a third rotating tooth engaged with the second rotating tooth, the first rotating tooth is connected to a rotating motor, the first rotating tooth penetrates through the furnace wall of the furnace to be connected to the first rotating drum, the second rotating tooth penetrates through the furnace wall of the furnace to be connected to the second rotating drum, and the third rotating tooth penetrates through the furnace wall of the furnace to be connected to the third rotating drum.

Compared with the prior art, the invention has the following beneficial effects:

the reverse-push type fire grate and the plurality of forward-push type fire grates are arranged at the lower end of the hearth, and the fire grates are used for stirring, raking and crushing garbage raw materials through reverse and forward pushing, so that garbage is fully combusted; slag in the burnout area is stirred and cleaned by pushing the grate forwards, so that the slag is prevented from being accumulated; and the heat of the slag generated after the front end is burnt is absorbed by the fire grate at the rear section, and the absorbed heat can be supplied to the fire grate at the front section for air supplement, so that the heated area of the garbage is greatly increased, the combustion efficiency is improved, and the energy is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic view of a garbage incinerator according to the present invention;

FIG. 2 is a schematic structural view of a drum mechanism according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of the installation of a first drum according to embodiment 2 of the present invention;

FIG. 4 is a schematic top view of the flue provided by the present invention;

FIG. 5 is a schematic cross-sectional view of a partition wall according to the present invention;

FIG. 6 is a schematic side view of a partition according to the present invention.

The reference numerals in the drawings denote the following, respectively:

1-hearth; 2-a blower device; 3-a fire grate mechanism; 4-a feed hopper; 5-slag discharge port; 6-heat exchange tube; 7-sludge grate; 8-a drum mechanism; 9-air supplement pipe; 10-a secondary air fan; 11-saw teeth; 12-a flue; 13-hydraulic drive means;

201-air heater; 202-an air cooler;

301-pushing the grate backwards; 302-a first forward grate; 303-a second forward-push grate;

801-a first drum; 802-a second drum; 803-a third drum; 804 — an integrated rotation device;

8041-a first rotating tooth; 8042-a second rotating tooth; 8043-third rotating tooth; 8044-rotating electric machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the present invention provides a waste incinerator, which includes a hearth 1, an air blowing device 2 disposed at a lower end of the hearth 1, a grate mechanism 3 disposed inside the hearth 1, and a drum mechanism 8 mounted above the grate mechanism 3, wherein the grate mechanism 3 is mounted above the air blowing device 2, a feed hopper 4 and a slag discharge port 5 are respectively disposed at two sides of the hearth 1, waste introduced from the feed hopper 4 enters the grate mechanism 3 and is incinerated by the air blowing device 2, and after being burned, the waste is changed into ash and flows out from the slag discharge port 5;

the grate mechanism 3 comprises a reverse-push grate 301 which is obliquely and downwards arranged at a drying section and an incineration section of the hearth 1, a first forward-push grate 302 and a second forward-push grate 303 which are arranged at an incineration section of the hearth 1, the first forward-push grate 302 is connected with the reverse-push grate 301 end to end, the second forward-push grate 303 is arranged below the first forward-push grate 302, the tail end of the second forward-push grate 303 is arranged on the slag discharge port 5, and the reverse-push grate 301, the first forward-push grate 302 and the second forward-push grate 303 stir and crush garbage in incineration through the rotating drum mechanism 8 so as to fully combust the garbage.

Specifically, waste incinerator is for burning rubbish and carrying out the device of recycling to the heat that it burned, general structure has furnace, furnace's front end sets up rubbish stoker, rubbish stoker is connected with the rubbish feed inlet, furnace inside is provided with continuous pivoted grate, the grate below is provided with hot-blast mechanism, the furnace top is provided with flue 12, the furnace below is provided with the slag notch, and furnace is inside to be differentiated into the drying zone according to the combustion degree of rubbish, combustion zone and burn-out zone, the drying zone setting is at the grate front end and links up with rubbish stoker, the combustion zone setting is in the grate middle section and sets up in hot-blast mechanism top, burn-out zone setting is at the back end of grate and links up with slag notch department.

The original garbage enters from the garbage feeding hole, is pushed into the drying section of the hearth under the action of the garbage pusher and falls onto the upper surface of the grate under the action of gravity, the hot air mechanism supplements hot air to the grate, the garbage is dried under the action of the hot air, and is carried to the combustion area of the hearth by the grate when being dried to a certain degree, the temperature of the combustion area is highest, the dried garbage is heated and combusted in the combustion area to generate a large amount of slag in flue gas, the large amount of slag enters the slag discharging hole under the drive of the grate for treatment, and the rising flue gas enters the flue 12 for further treatment.

In general, a reverse-push grate is adopted in an incinerator and continuously pushes original garbage to an inlet, namely the rotation direction of the reverse-push grate is opposite to the falling direction of the gravity of the garbage, so that the retention time of the garbage on the grate is prolonged, and the garbage is prevented from rapidly falling to a slag discharge port. The reverse-push fire grate makes the garbage fully dry in the drying section, and fully burns in the combustion area, but the same, and the slag constantly accumulates under the drive of reverse-push fire grate, leads to the heat of mending to be absorbed by the slag, and the energy is wasted, and secondly a large amount of slag are piled up in burning out the district, also cause the jam to the reverse-push fire grate easily, make its product life reduce.

Therefore, in order to clean slag in the hearth in time, in the invention, a reverse-push grate 301, a first forward-push grate 302 and a second forward-push grate 303 are arranged in the hearth 1, particularly, the reverse-push grate 301 and the first forward-push grate 302 rotate in opposite directions, the first forward-push grate 302 and the second forward-push grate 303 rotate in the same direction, the first forward-push grate 302 and the reverse-push grate 301 are connected end to end, the connection position is arranged at the connection position of a combustion area and a burnout area, the first forward-push grate is arranged above the second forward-push grate 303, and the second forward-push grate 303 is directly connected with a slag discharge opening 5.

The reverse pushing fire grate 301 and the first forward pushing fire grate 302 have opposite rotating directions, the connecting position is arranged at the connecting position of the combustion area and the burn-out area, and the two fire grates with opposite rotating directions can extrude slag pushed in the combustion area and the burn-out area, so that the slag is crushed in the extrusion process, the temperature of the slag is higher, the crushed slag can release heat accumulated in the slag, and the combustion effect is improved; and the broken slag is driven by the first forward-push grate 302 to the second forward-push grate 303, so that the slag can be rapidly transported out of the hearth, a large amount of slag is prevented from blocking hot air and absorbing heat in the hot air, and the energy utilization rate is improved.

And the second forward-push grate 303 is arranged at the edge of the slag discharging port 5, so that the slag is further pushed to enter the slag discharging port 5 in order, the slag is cooled on the premise of not influencing the garbage combustion effect of a combustion area, heat is collected into the second forward-push grate 303, the heat of the slag is recycled, and the utilization effect of energy is improved.

Preferably, the hearth 1 is laterally shorter and longitudinally longer, that is, the slope of the reverse grate 301 is increased to improve the accumulation effect of slag in an ember area.

In this embodiment, in order to prevent slag from directly falling to the bottom of the furnace 1 from between the reverse-pushing grate 301 and the first forward-pushing grate 302, one end of the reverse-pushing grate 301 is connected to the feeding hopper 4, and the other end of the reverse-pushing grate 301 sequentially and obliquely passes through the drying section and the combustion section of the furnace 1 downward and is arranged above the first forward-pushing grate 302 in an overlapping manner. Wherein, the grate segments on the reverse-push grate 301, the first forward-push grate 302 and the second forward-push grate 303 are arranged obliquely upwards at an inclination angle of 20 degrees.

In this embodiment, the first forward-pushing fire grate 302 and the second forward-pushing fire grate 303 are both rotatably disposed in the furnace chamber 1 through an integrated power device, the rotating directions of the first forward-pushing fire grate 302 and the reverse-pushing fire grate 301 are opposite, and the first forward-pushing fire grate 302 and the second forward-pushing fire grate 303 are both horizontally disposed.

The integrated power device is a power component for driving the reverse-push fire grate 301, the first forward-push fire grate 302 and the second forward-push fire grate 303, and the concrete working modes of the fire grates are the prior art and are mature, so that the detailed description of the invention is omitted, and particularly, the rotating direction of the reverse-push fire grate 301 is opposite to the feeding direction of the original garbage, and the rotating directions of the first forward-push fire grate 302 and the second forward-push fire grate 303 are opposite to the reverse-push fire grate 301.

In order to enable slag to fully arch and level, fully burn in an ember section and replace heat to the second forward-pushing grate 303, the first forward-pushing grate 302 and the second forward-pushing grate 303 are horizontally arranged, so that slag accumulation is prevented, or the heat exchange is insufficient due to the fact that the contact time with the grates is too short.

Preferably, in order to realize multi-stage utilization of energy, a heat exchange tube 6 is arranged on the lower side of the second forward-push grate 303, and the heat exchange tube 6 is wrapped and arranged below the second forward-push grate 303. When the heat of the slag is replaced on the second forward-pushing fire grate 303, the second forward-pushing fire grate 303 replaces the heat to the heat exchange tube 6, cold water is arranged in the heat exchange tube 6, the heat heats the cold water, the temperature of the heat exchange tube 6 is increased, and the heat exchange tube 6 with higher temperature is connected with other devices needing heating, so that the energy is recycled.

In this embodiment, the air blowing device 2 includes a hot air blower 201 installed below the reverse-thrust grate 301, and an air cooler 202 installed below the second forward-thrust grate 303, where the hot air blower 201 supplements hot air to the garbage on the reverse-thrust grate 301, and the air cooler 202 cools the slag on the second forward-thrust grate 303.

The hot air blower 201 is arranged at the bottom of the reverse-push type grate and blows hot air higher than 220 ℃ upwards, rolling garbage raw materials are heated and burnt uniformly and continuously, the front garbage raw materials drive the rear garbage raw materials to be burnt after being burnt, the rear garbage raw materials are changed into powdery slag after being burnt, the slag enters the first forward-push grate 302 under the action of gravity and stirring and enters the second forward-push grate 303 under the drive of the first forward-push grate 302, an air cooler 202 is arranged below the second forward-push grate 303, the cold air temperature of the air cooler 202 is room temperature, when the cold air passes through the lower part of the second forward-push grate 303, heat exchange is carried out between the cold air and the slag, firstly, the slag can be cooled, secondly, oxygen can be supplemented, the slag is fully combusted, thirdly, heated air is blown to a combustion section of the grate, and hot air supplement is carried out on the combustion section.

The air quantity and the air temperature of the air cooler 202 and the air heater 201 can be changed, and the garbage can is suitable for different garbage materials. When the garbage is still not burnt out on the second forward-pushing grate 303, the cold air blower 202 can be adjusted to be a hot air blower to supplement heat for the second forward-pushing grate 303.

Preferably, in order to further adapt to different types of garbage materials, the incinerator designed by the invention further comprises a sludge grate, wherein the sludge grate 7 is used for drying and incinerating sludge-like garbage, the sludge grate 7 is arranged at the top of the hearth 1, and the sludge grate 7 is arranged above the first forward-push grate 302.

The sludge grate 7 can also be used for feeding other materials (such as biomass, industrial organic wastes and the like) with different characteristics and needing synergy.

According to the above, the flue gas outlet is further arranged above the incinerator, a general flue gas outlet is arranged at the junction of the combustion section or the combustion section and the burn-out section, the first forward-push grate 302 is arranged at the junction of the combustion section and the burn-out section, in the embodiment, the sludge grate 7 is arranged on the first forward-push grate 302, when sludge garbage enters from the feed inlet above the sludge grate 7, cold air flowing out of the air cooler 202 is heated by the second forward-push grate 303 to become hot air to evaporate sludge-like garbage at the front end of the sludge grate 7, and when moisture is evaporated to a certain degree, the sludge-like garbage enters the rear end of the sludge grate 7 and is dried by the hot air at the combustion section, and finally is combusted.

Preferably, a revolving drum mechanism 8 is arranged between the sludge grate 7 and the first forward-pushing grate 302, the revolving drum mechanism 8 transversely penetrates through the hearth 1 and is arranged above the first forward-pushing grate 302 and the second forward-pushing grate 303, and the revolving drum mechanism 8 is connected with a secondary fan 10 through an air supplementing pipe 9.

Slag and material slag dried on the sludge grate 7 are easy to agglomerate in the combustion and drying processes, so that the grate is not smooth to operate, a large number of blocks are accumulated on the grate, a cold air channel and a hot air channel are blocked, the normal operation of incineration is influenced, and the shutdown can be caused in severe cases. Therefore, in order to further solve the above problems, a drum mechanism 8 for stirring the garbage is arranged between the sludge grate 7 and the first forward-push grate 302, the drum mechanism 8 rotates among the grates to stir the slag on the sludge grate and the incompletely burnt garbage, the agglomerated garbage is crushed, the crushed garbage is leveled, the heating area of the garbage is increased, the components of the garbage are combusted and dried, meanwhile, the grates are prevented from being blocked by the slag, and the normal operation of the machine is ensured.

Particularly, the secondary fan 10 is used for supplementing air to the flue 12, the secondary fan 10 is connected with an air supplementing pipe 9, the air supplementing pipe 9 penetrates through the rotary drum mechanism 8 to be communicated with the flue 12 above the hearth 1, room-temperature air in the air supplementing pipe 9 is heated when passing through the inside of the hearth 1, and hot air provides heat for combustible gas which is not completely burnt out at the flue 12 so as to be completely combusted.

Specifically, the revolving drum mechanism 8 includes a first revolving drum 801, a second revolving drum 802, a third revolving drum 803 which transversely penetrate through the furnace 1, and an integrated rotating device 804 which drives the first revolving drum 801, the second revolving drum 802, and the third revolving drum 803, the first revolving drum 801 is disposed below the sludge fire grate 7, the second revolving drum 802 is mounted at the end of the first forward-thrust fire grate 302 in a hanging manner, the third revolving drum 803 is mounted at the end of the second forward-thrust fire grate 303 in a hanging manner, and the air supplementing pipe 9 axially penetrates through the third revolving drum 803;

the first drum 801, the second drum 802 and the third drum 803 are provided with saw teeth 11.

The first rotary drum 801 is arranged below the sludge grate 7 and used for crushing sludge falling from the sludge grate 7, preventing sludge garbage from hardening in the incineration process, enabling the sludge garbage to be fully combusted, and preventing the hardened sludge garbage from blocking the grate.

The second rotary drum 802 is arranged at the joint of the reverse-pushing fire grate 301 and the first forward-pushing fire grate 302, the saw teeth 11 are arranged on the second rotary drum 802, when the furnace slag enters the junction, the first rotary drum 801 with the saw teeth 11 is arranged close to the tail end of the reverse-pushing fire grate 301, the integrated rotating device 804 drives the first rotary drum 801 to rotate, the saw teeth 11 on the first rotary drum 801 crush the furnace slag and drive the furnace slag to smoothly fall onto the first forward-pushing fire grate 302, and the furnace slag is prevented from caking and blocking.

The third drum 803 is provided with the end of the second forward-pushing fire grate 303, which is the joint between the second forward-pushing fire grate 303 and the slag tap 5, and is provided with a saw tooth 11 structure, so that the slag at the end of the second forward-pushing fire grate 303 is crushed and pushed when rotating, and the slag can smoothly enter the slag tap 5.

There are various ways of mounting and driving the first drum 801, as shown in fig. 2, embodiment 1 is as follows:

in the present embodiment, the integrated rotating device 804 includes a first rotating tooth 8041 rotatably mounted on the furnace wall of the furnace 1, a second rotating tooth 8042 engaged with the rotating tooth 8042, and a third rotating tooth 8043 engaged with the second rotating tooth 8042, the first rotating tooth 8041 is connected with a rotating motor 8044, the first rotating tooth 8041 passes through the furnace wall of the furnace 1 to be connected with the first rotating drum 801, the second rotating tooth 8042 passes through the furnace wall of the furnace 1 to be connected with the second rotating drum 802, and the third rotating tooth 8043 passes through the furnace wall of the furnace 1 to be connected with the third rotating drum 803.

An output shaft is arranged on the rotating motor 8044, the output shaft is connected with a rotating female tooth, the rotating female tooth is meshed with the first rotating tooth 8041, when the rotating motor 8044 rotates, the rotating female tooth drives the first rotating tooth 8041 to rotate, the first rotating tooth 8041 drives the second rotating tooth 8042 to rotate, the second rotating tooth 8042 drives the third rotating tooth 8043 to rotate, and the first rotating tooth 8041, the second rotating tooth 8042 and the third rotating tooth 8043 respectively drive the first rotating drum 801, the second rotating drum 802 and the third rotating drum 803 to rotate, so that garbage in the incinerator is simultaneously crushed and leveled.

Further, since there may be a large slag lump in the incinerator, the saw teeth 11 on the first rotary drum 801 are easily stuck by the slag during the rotation, which results in the decrease of the raking effect and even the shutdown of the first rotary drum 801, so that the second rotary drum 802 and the third rotary drum 803 are shut down. Therefore, the installation and driving manner of the first rotary drum 801 includes the above-mentioned manner but is not limited to the embodiment 1, and as shown in fig. 3, the embodiment 2 is as follows: the first rotating drum 801 is arranged in the hearth 1 in a suspended mode through the hydraulic driving device 13, two ends of the first rotating drum 801 are not connected with the inner wall of the hearth 1, namely the hydraulic driving device 13 is arranged in the hearth 1, the first rotating drum 801 is arranged at the tail end of the hydraulic driving device 13, when workers drive the hydraulic driving device 13, the first rotating drum 801 longitudinally moves above the reverse-pushing fire grate 301, and the rotation driving motor for driving the first rotating drum 801 to rotate is arranged at the tail end of the hydraulic driving device 13 and used for driving the first rotating drum 801 to rotate.

When large slag accretions occur on the reverse grate 301, the position of the first drum 801 can be manipulated to clean the slag.

Particularly, the part of the air supply pipe 9 installed inside the furnace 1 is a telescopic sleeve, and when the first rotary drum 801 moves up and down, the length of the air supply pipe 9 is telescopic along with the telescopic sleeve, so that smooth heating and air supply are ensured.

The rotation driving means of the second drum 802 includes the mounting means described in embodiment 1 but is not limited to the mounting means described in embodiment 1, and when the first drum 801 adopts the mounting means of embodiment 2, the rotation motor 8044 is directly connected to the second rotating tooth 8042.

As shown in fig. 4 to 6, preferably, a flue 12 partition is provided at the flue gas outlet, the flue 12 partition is divided into a first partition, a second partition, a first flue 12, a second flue 12, and a third flue 12, which are provided between the first partition, the second partition, and a partition water wall, and a flue 12 is provided with turbulence, i.e. a structure of outward arching is added between an upper header and a lower header, and the maintenance and the tube replacement are facilitated.

A partition wall adjacent to a flue 12 is a two-layer modular waterwall structure.

And the two partition walls in the middle of the first flue and the second flue 12 are of a two-layer mode water-cooled wall structure.

The partition wall of the two partition walls is close to the side of the flue 12 and is provided with a flame folding angle to refract the flue gas like a front wall, so that the disturbance of the flue gas and the convection heat exchange of a ceiling of the front wall of the flue 12 are increased.

3-4 water-cooled walls are arranged in the middle of the second flue 12, the second flue is a two-layer mode water-cooled wall, and 5-6 water-cooled walls can be arranged in the ultra-wide hearth.

The three flues 12 adopt flag type evaporation heating surfaces.

Preferably, the superheater 7 is divided into a secondary superheater and a tertiary superheater, the secondary superheater increases the discharge area, and a surfacing high-temperature-resistant corrosion-resistant alloy material is adopted to resist high-temperature corrosion.

The three-level superheater reduces the area of rows, reduces the area of high-temperature corrosion easily appearing in the center of the three-level superheater, and adopts a surfacing high-temperature-resistant corrosion-resistant alloy material to resist the high-temperature corrosion.

The high superheater is arranged and made of surfacing high-temperature-resistant and corrosion-resistant alloy materials, and the pipe pipes are close to each other. Is placed in front of the tertiary superheater.

Preferably, a group of low-temperature economizers can be added to reduce the temperature of the exhaust smoke.

Through the waste incinerator of this embodiment, can realize the stirring and hug the flat to refuse raw materials, and the slag heat that the front end produced after burning is absorbed by the grate of back end, and the heat after the absorption can supply the next wind usefulness of anterior segment grate, improves combustion efficiency, the energy saving.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. The garbage incinerator is characterized by comprising a hearth (1), a blowing device (2) arranged at the lower end of the hearth (1), a grate mechanism (3) arranged inside the hearth (1) and a rotary drum mechanism (8) arranged above the grate mechanism (3), wherein the grate mechanism (3) is arranged above the blowing device (2), a feed hopper (4) and a lower slag hole (5) are respectively arranged on two sides of the hearth (1), garbage introduced from the feed hopper (4) enters the grate mechanism (3) to be incinerated by the blowing device (2) and becomes ash after being burnt, and the ash flows out of the lower slag hole (5);

the grate mechanism (3) comprises a reverse-push grate (301) which is obliquely and downwards arranged at the drying section and the burning section of the hearth (1), a first forward-push grate (302) and a second forward-push grate (303) which are arranged at the burning section of the hearth (1), the first forward-push grate (302) is connected with the reverse-push grate (301) end to end, the second forward-push grate (303) is arranged below the first forward-push grate (302), the tail end of the second forward-push grate (303) is arranged on the slag discharge port (5), and the reverse-push grate (301), the first forward-push grate (302) and the second forward-push grate (303) stir and crush the garbage during burning through the rotating drum mechanism (8) so as to fully burn the garbage.

2. A waste incinerator according to claim 1, characterized in that one end of said reverse grate (301) is connected to said feeding hopper (4), and the other end of said reverse grate (301) is sequentially passed through the drying section and the combustion section of said furnace (1) in an inclined downward manner and overlapped above said first forward grate (302).

3. A waste incinerator according to claim 2, characterized in that said first forward grate (302) and said second forward grate (303) are rotatably disposed in said furnace chamber (1) by means of an integrated power plant, said first forward grate (302) and said reverse grate (301) are rotated in opposite directions, and said first forward grate (302) and said second forward grate (303) are horizontally disposed.

4. A waste incinerator according to claim 3, characterized in that the heat exchange pipe (6) is arranged at the lower side of said second forward pushing grate (303), and said heat exchange pipe (6) is wrapped and arranged below said second forward pushing grate (303).

5. A waste incinerator according to claim 4 wherein said air blower means (2) comprises a hot air blower (201) mounted below said reverse grate (301), a cold air blower (202) mounted below said second forward grate (303), said hot air blower (201) supplying hot air to the waste on said reverse grate (301), said cold air blower (202) cooling the slag on said second forward grate (303).

6. A waste incinerator according to claim 1, characterized in that said drum mechanism (8) extends transversely through said furnace (1) and is arranged above said first (302) and second (303) forward grate, said drum mechanism (8) being connected to a secondary air blower (10) through an air supply duct (9).

7. A waste incinerator according to claim 6 characterized by further comprising a sludge grate, said sludge grate (7) being located at the top of said furnace (1), said sludge grate (7) being located above said drum mechanism (8).

8. A waste incinerator according to claim 7 characterized in that said drum mechanism (8) comprises a first drum (801), a second drum (802), a third drum (803) running transversely through said furnace (1) and an integrated rotary device (804) driving said first drum (801), said second drum (802) and said third drum (803), said first drum (801) is arranged on said sludge grate (7), said second drum (802) is mounted hanging on the end of said first forward grate (302), said third drum (803) is mounted hanging on the end of said second forward grate (303), said air supply pipe (9) axially passes through said first drum (801).

9. A waste incinerator according to claim 8, characterized in that the first (801), second (802) and third (803) drums are provided with serrations (11).

10. A waste incinerator according to claim 9 wherein said integrated rotary means (804) includes a first rotary spur (8041) rotatably mounted on the wall of said furnace (1), a second rotary spur (8042) engaging said spur and a third rotary spur (8043) engaging said second rotary spur (8042), said first rotary spur (8041) being connected to a rotary motor (8044), said first rotary spur (8041) being connected to said first drum (801) through the wall of said furnace (1), said second rotary spur (8042) being connected to said second drum (802) through the wall of said furnace (1), said third rotary spur (8043) being connected to said third drum (803) through the wall of said furnace (1).