CN211600716U

CN211600716U - Garbage drying device for garbage incineration power plant

Info

Publication number: CN211600716U
Application number: CN202020200682.1U
Authority: CN
Inventors: 骆毅力; 骆的; 朱崇刚; 靳雪峰; 王建丽
Original assignee: Heinuoer Yibin Environmental Protection Power Co ltd
Current assignee: Heinuoer Yibin Environmental Protection Power Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-09-29
Anticipated expiration: 2030-02-24

Abstract

The utility model discloses a waste drying device is used in msw incineration power plant, the bottom of an air inlet storehouse (5) is connected with first draught fan (11), the top of furnace (1) is provided with flue gas pipe (12), a port and furnace (1) intercommunication of flue gas pipe (12) just are located first grate (3), another port of flue gas pipe extends in furnace (1) outside, and extension department is connected with third draught fan (13), be provided with the three-way pipe on the outer wall of exhaust port (2), a port of three-way pipe and the inlet scoop of third draught fan (13) are through the pipe connection, another port of three-way pipe (14) and the inlet scoop of first draught fan (11) are through the pipe connection, divide flitch (15) to set firmly on the inner wall of furnace (1), divide flitch (15) to set up between flue gas pipe (12) and feed inlet (9). The utility model has the advantages that: compact structure, improvement energy-conserving effect, thoroughly dry the domestic waste on the first grate, easy operation.

Description

Garbage drying device for garbage incineration power plant

Technical Field

The utility model relates to a domestic waste burns's technical field, especially a waste incineration is waste drying device for power plant.

Background

With the rapid development of economic society, the living of residents is steadily improved, the yield of household garbage (particularly urban household garbage) is rapidly increased, a single garbage landfill mode cannot meet the garbage treatment requirement, and the garbage incineration power generation is rapidly developed by the advantages of harmlessness, reduction and recycling, so that most of garbage treatment plants adopt garbage incinerators to incinerate garbage at present.

The structure of the existing garbage incinerator is shown in figure 1, and comprises a hearth (1), a smoke outlet (2) arranged at the top of the hearth (1), and a first grate (3) and a second grate (4) arranged in the hearth (1), wherein the bottoms of the first grate (3) and the second grate (4) are respectively provided with a first air inlet bin (5) and a second air inlet bin (6), the two air inlet bins are communicated with the hearth (1), the bottom of the first air inlet bin (5) is sequentially connected with an air heater (18) and a first induced draft fan (11), the bottom of the second air inlet bin (6) is connected with a second induced draft fan (7), a slag discharge port (8) positioned at the right side of the second grate (4) is also arranged in the hearth (1), a feed inlet (9) is arranged on the hearth (1), the feed inlet (9) is positioned above the first grate (3), and a combustor (10) is arranged on the outer wall of the hearth (1), the flame injection ports of the burner (10) are arranged towards the second grate (4). When the household garbage is incinerated, the household garbage (19) is dumped into the feeding hole (9), the household garbage (19) falls onto the first grate (3), the household garbage is conveyed to the right by the first grate (3), in the conveying process, air is introduced into the air heater (18) by the first induced draft fan (11), the air is heated by the air heater (18), the heated hot air enters the hearth (1) through the first air inlet bin (5), meanwhile, the lower-layer household garbage on the first grate (3) is heated, and the hot air plays a role in pre-drying the household garbage, so that the fuel consumption of a subsequent combustor is reduced, and the energy-saving effect is achieved; when the household garbage falls onto the second grate (4) after being dried, flame is sprayed out by the burner (10) to burn the household garbage on the second grate (4), and slag obtained after burning is discharged through the slag discharge port (8), so that the burning of the garbage is finally completed.

However, although this garbage incinerator can burn the garbage, it still has the following disadvantages: 1. the domestic garbage falling on the first fire grate (3) is in a stacking state, the hot air can only heat the garbage at the lower layer of the first fire grate (3), the garbage at the upper layer is not heated and dried, and the defect of incomplete domestic garbage drying exists, so that the subsequent combustor (10) still consumes a lot of fuel to thoroughly burn the domestic garbage, and the energy-saving effect is not ideal. 2. The air heater (18) still needs to consume a large amount of electric energy to heat the air, and the energy-saving effect is still not ideal. Therefore, a drying device for thoroughly drying the household garbage on the first grate by improving the energy-saving effect is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a compact structure, improve energy-conserving effect, thoroughly dry domestic waste, easy operation's waste drying device for waste incineration power plant on the first grate.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a waste drying device for msw incineration power plant, it includes furnace, sets up in the exhaust port at furnace top, sets up first grate and the second grate in furnace, the bottom of first grate and second grate is provided with first air inlet storehouse and second air inlet storehouse respectively, and two air inlet storehouses all communicate with furnace, the bottom of second air inlet storehouse is connected with the second draught fan, still is provided with the cinder notch that is located the second grate right side in the furnace, be provided with the feed inlet that is located first grate top on the furnace, be provided with the combustor on the outer wall of furnace, the flame jet of combustor sets up towards the second grate, the bottom of first air inlet storehouse is connected with first draught fan, the top of furnace is provided with the flue gas pipe, and a port and the furnace intercommunication of flue gas pipe just are located first grate directly over, and another port of flue gas pipe extends outside furnace, and extend the end department and be connected with the third draught fan, be provided with the three-way pipe on the outer wall of exhaust port, three-way pipe and exhaust port intercommunication, the inlet scoop of a port and the third draught fan of three-way pipe is through the pipe connection, another port of three-way pipe is through the pipe connection with the inlet scoop of first draught fan, the branch flitch has set firmly on furnace's the inner wall, divides the flitch to set up between flue gas pipe and feed inlet, divides the flitch to include the fixed plate and divides the material tooth, and the top of fixed plate welds on furnace's inner wall, and the bottom welding of fixed plate has the branch material tooth that a plurality of intervals set up, divides the material tooth to be located first grate directly over, divides.

The bottom of furnace is provided with a plurality of supporting legs.

The three-way pipe is arranged at the upper end part of the smoke exhaust port.

The smoke exhaust port is positioned right above the second grate.

The flue gas pipe is a conical pipe, and a large port of the conical pipe extends into the hearth.

The hearth is provided with a conical hole matched with the conical pipe, and the conical pipe is welded in the conical hole.

The utility model has the advantages of it is following:

1. one part of hot flue gas is through first draught fan, first air inlet bin enters into furnace in, hot flue gas heats the lower floor domestic waste on the first grate, another part of flue gas is through the third draught fan, the flue gas pipe enters into furnace, the upper domestic waste on the first grate of this part hot flue gas heating, and domestic waste before getting into the drying zone, divide the material tooth to scatter accumulational domestic waste, with the area of contact of increase hot flue gas and domestic waste, ensure that domestic waste is thoroughly dried on first grate, because domestic waste is thoroughly dried on first grate, consequently very big reduction the fuel that follow-up combustor burned rubbish, energy-conserving effect has been improved.

2. The utility model discloses utilized the hot flue gas that burns the production to come dry domestic waste, replaced the tradition and adopted air heater to heat the air, saved the energy consumption, further improved energy-conserving effect.

Drawings

FIG. 1 is a schematic view of a conventional garbage incinerator;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural diagram of a material distributing plate;

in the figure, 1-hearth, 2-smoke outlet, 3-first grate, 4-second grate, 5-first air inlet bin, 6-second air inlet bin, 7-second induced draft fan, 8-slag outlet, 9-feed inlet, 10-burner, 11-first induced draft fan, 12-flue gas pipe, 13-third induced draft fan, 14-three-way pipe, 15-material distributing plate, 16-fixing plate, 17-material distributing gear, 18-air heater and 19-domestic garbage.

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. 2, a waste drying device is used in msw incineration power plant, it includes furnace 1, set up in exhaust port 2 at furnace 1 top, set up first grate 3 and second grate 4 in furnace 1, exhaust port 2 is located second grate 4 directly over, and furnace 1's bottom is provided with a plurality of supporting legs, the bottom of first grate 3 and second grate 4 is provided with first air inlet storehouse 5 and second air inlet storehouse 6 respectively, and two air inlet storehouses all communicate with furnace 1, the bottom of second air inlet storehouse 6 is connected with second draught fan 7, still is provided with the row cinder notch 8 that is located second grate 4 right side in furnace 1, be provided with the feed inlet 9 that is located first grate 3 top on furnace 1, be provided with combustor 10 on furnace 1's the outer wall, the flame jet of combustor 10 sets up towards second grate 4.

As shown in fig. 2 to 3, the bottom of the first air inlet bin 5 is connected with a first induced draft fan 11, the top of the furnace 1 is provided with a flue gas pipe 12, one port of the flue gas pipe 12 is communicated with the furnace 1 and is located right above the first furnace bank 3, the other port of the flue gas pipe 12 extends outside the furnace 1, and the extending end is connected with a third induced draft fan 13, the outer wall of the exhaust port 2 is provided with a three-way pipe 14, the three-way pipe 14 is arranged at the upper end of the exhaust port 2, the three-way pipe 14 is communicated with the exhaust port 2, one port of the three-way pipe 14 is connected with the suction port of the third induced draft fan 13 through a pipeline, the other port of the three-way pipe 14 is connected with the suction port of the first induced draft fan 11 through a pipeline, a material distributing plate 15 is fixedly arranged on the inner wall of the furnace 1, the material distributing plate 15 is arranged between the flue gas pipe 12 and the feed inlet 9, the, a plurality of material distributing teeth 17 arranged at intervals are welded at the bottom of the fixing plate 16, the material distributing teeth 17 are positioned right above the first grate 3, and the material distributing teeth 17 are sequentially arranged from front to back.

As shown in fig. 2, the flue gas pipe 12 is a tapered pipe, and a large port of the tapered pipe extends into the furnace 1. The hearth 1 is provided with a conical hole matched with the conical pipe, and the conical pipe is welded in the conical hole.

The working process of the utility model is as follows:

s1, connecting the top of the smoke outlet 2 to a smoke treatment system through a pipeline by workers; a worker opens a first induced draft fan 11, a second induced draft fan 7, a third induced draft fan 13 and a combustor 10;

s2, dumping the household garbage 19 into the feeding hole 9 by a worker, conveying the household garbage 19 falling on the first grate 3 to the right, making the household garbage 19 penetrate through the gap between the material distributing teeth 17, then falling onto the second grate 4 after passing through the lower part of the flue gas pipe 12, ejecting flame from the burner 10 to incinerate the household garbage on the second grate 4, discharging the slag obtained after incineration through the slag discharging hole 8, and discharging hot flue gas generated by incineration from the smoke discharging hole 2 and entering the flue gas treatment system;

s3, the first induced draft fan 11 and the third induced draft fan 13 in the step S1 draw out hot flue gas in the smoke outlet 2 from the three-way pipe 14, a part of the drawn-out hot flue gas enters the hearth 1 through the first induced draft fan 11 and the first air inlet bin 5, the hot flue gas heats the lower-layer domestic garbage on the first hearth 3, meanwhile, the other part of the drawn-out flue gas enters the hearth 1 through the third induced draft fan 13 and the flue gas pipe 12, the part of the hot flue gas heats the upper-layer domestic garbage on the first hearth 3, and before the domestic garbage enters the drying area, the distributing teeth 17 disperse the accumulated domestic garbage to increase the contact area of the hot flue gas and the domestic garbage, so that the domestic garbage is completely dried on the first hearth 3. Because the domestic garbage is thoroughly dried on the first grate, the fuel for burning the garbage by a subsequent burner is greatly reduced, and the energy-saving effect is improved; in addition, the hot flue gas generated by incineration is used for drying the household garbage, the traditional method of heating air by using an air heater is replaced, the energy consumption is saved, and the energy-saving effect is further improved.

S4, the dried domestic garbage falls on the second grate 4, and the flame sprayed by the burner 10 thoroughly burns the dried domestic garbage.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a waste drying device for msw incineration power plant, it includes furnace (1), sets up in exhaust port (2) at furnace (1) top, sets up first grate (3) and second grate (4) in furnace (1), the bottom of first grate (3) and second grate (4) is provided with first air inlet storehouse (5) and second air inlet storehouse (6) respectively, and two air inlet storehouses all communicate with furnace (1), the bottom of second air inlet storehouse (6) is connected with second draught fan (7), still is provided with in furnace (1) and is located slag discharge opening (8) on second grate (4) right side, be provided with feed inlet (9) that are located first grate (3) top on furnace (1), is provided with combustor (10) on the outer wall of furnace (1), and the flame jet of combustor (10) sets up towards second grate (4), the method is characterized in that: the bottom of the first air inlet bin (5) is connected with a first induced draft fan (11), the top of the hearth (1) is provided with a flue gas pipe (12), one port of the flue gas pipe (12) is communicated with the hearth (1) and is positioned right above the first grate (3), the other port of the flue gas pipe (12) extends to the outside of the hearth (1), and the extending end is connected with a third induced draft fan (13), the outer wall of the exhaust port (2) is provided with a three-way pipe (14), the three-way pipe (14) is communicated with the exhaust port (2), one port of the three-way pipe (14) is connected with the exhaust port of the third induced draft fan (13) through a pipeline, the other port of the three-way pipe (14) is connected with the exhaust port of the first induced draft fan (11) through a pipeline, a material distributing plate (15) is fixedly arranged on the inner wall of the hearth (1), and the material distributing plate (15) is arranged between the flue gas, divide flitch (15) to weld on the inner wall of furnace (1) including fixed plate (16) and branch material tooth (17), the top of fixed plate (16), and the bottom welding of fixed plate (16) has a plurality of intervals to set up divides material tooth (17), divides material tooth (17) to be located first grate (3) directly over, divides material tooth (17) to set gradually by going to the back.

2. The waste drying device for the waste incineration power plant according to claim 1, wherein: the bottom of the hearth (1) is provided with a plurality of supporting legs.

3. The waste drying device for the waste incineration power plant according to claim 1, wherein: the three-way pipe (14) is arranged at the upper end part of the smoke outlet (2).

4. The waste drying device for the waste incineration power plant according to claim 1, wherein: the smoke exhaust port (2) is positioned right above the second grate (4).

5. The waste drying device for the waste incineration power plant according to claim 1, wherein: the flue gas pipe (12) is a conical pipe, and a large port of the conical pipe extends into the hearth (1).

6. The waste drying device for the waste incineration power plant according to claim 1, wherein: the hearth (1) is provided with a conical hole matched with the conical pipe, and the conical pipe is welded in the conical hole.