CN112577052A

CN112577052A - Waste incineration system

Info

Publication number: CN112577052A
Application number: CN202011591405.9A
Authority: CN
Inventors: 龙其猛; 王芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-03-30

Abstract

The invention discloses a waste incineration system, which comprises: the high-temperature gasification furnace is provided with a garbage feeding hole and a tail gas outlet; the second combustion chamber comprises a shell and a radiating pipe, a first pyrolysis circulating flow chamber and a second pyrolysis circulating flow chamber are arranged in the shell, and a first air outlet is formed in the top of the first pyrolysis circulating flow chamber; the second pyrolysis circulation chamber is provided with a first air inlet, a second air inlet and a second air outlet, and the first air inlet is communicated with the tail gas outlet; the radiating pipe is arranged in the shell and communicated with the first air inlet; the inlet of the spray tower is communicated with the first air outlet; the settler is provided with a third air inlet and a third air outlet, the third air inlet is communicated with the outlet of the spray tower, and the third air outlet is communicated with the second air inlet; the inlet of the adsorption tower is communicated with the second air outlet; and the inlet of the induced draft fan is communicated with the outlet of the adsorption tower, and the outlet of the induced draft fan is communicated with the exhaust port. The waste incineration system is simple in structure and can improve the tail gas purification effect.

Description

Waste incineration system

Technical Field

The invention relates to the technical field of garbage disposal devices, in particular to a garbage incineration system.

Background

The household garbage incineration treatment is to treat the household garbage by utilizing the high-temperature oxidation effect, the household garbage is burnt at high temperature, so that combustible waste in the household garbage is converted into carbon dioxide, water and the like, and the incinerated ash is only less than 20% of the original volume of the household garbage, so that the amount of solid waste is greatly reduced, and various pathogens can be thoroughly killed. Therefore, the household garbage can be placed into the garbage incineration device for combustion, the garbage is incinerated and the tail gas is purified through the garbage incineration device, but the existing garbage incineration device is complex in structure and poor in tail gas purification effect.

Disclosure of Invention

The invention aims to provide a waste incineration system, so that the defects of complex structure and poor tail gas purification effect of a waste incineration device are overcome.

In order to achieve the above object, the present invention provides a waste incineration system, comprising: the high-temperature gasification furnace is used for burning garbage, a garbage feeding port is formed in the side wall of the high-temperature gasification furnace, a tail gas outlet is formed in the top of the high-temperature gasification furnace, and the garbage feeding port is connected with an automatic garbage feeding device; the second combustion chamber comprises a shell and a radiating pipe, a first pyrolysis circulating flow chamber and a second pyrolysis circulating flow chamber are sequentially arranged in the shell from bottom to top, and a first air outlet is formed in the top of the first pyrolysis circulating flow chamber; the second pyrolysis circulation chamber is provided with a first air inlet, a second air inlet and a second air outlet, and the first air inlet is communicated with the tail gas outlet; the radiating pipe is arranged in the shell, the lower end of the radiating pipe is positioned in the first pyrolysis circulating chamber, and the upper end of the radiating pipe is positioned in the second pyrolysis circulating chamber and communicated with the first air inlet; the inlet of the spray tower is communicated with the first air outlet; the settler is provided with a third air inlet and a third air outlet, the third air inlet is communicated with the outlet of the spray tower, and the third air outlet of the settler is communicated with the second air inlet of the second combustion chamber; an inlet of the adsorption tower is communicated with the second air outlet of the second combustion chamber; and the inlet of the induced draft fan is communicated with the outlet of the adsorption tower, and the outlet of the induced draft fan is communicated with the exhaust port.

Preferably, in the above technical scheme, the high temperature gasification furnace includes a furnace body, the furnace body is provided with a combustion chamber, a first waste incineration chamber and a second waste incineration chamber in sequence from bottom to top, the combustion chamber and the first waste incineration chamber are separated by a first furnace bridge, and the first waste incineration chamber and the second waste incineration chamber are separated by a second furnace bridge; a combustion device is arranged in the combustion chamber; a first air inlet channel is arranged on the side wall of the combustion chamber, a plurality of first air outlet holes communicated with the combustion chamber are formed in the first air inlet channel, a second air inlet channel is arranged on the side wall of the first garbage incineration chamber, a plurality of second air outlet holes communicated with the first garbage incineration chamber are formed in the second air inlet channel, and the first air inlet channel and the second air inlet channel are both connected with an air supply device; the lateral wall of second waste incineration chamber is equipped with the rubbish feed inlet, just the top of second waste incineration chamber is equipped with the tail gas export.

Preferably, in the above technical scheme, a spoiler located below the tail gas outlet is arranged at the top of the second waste incineration chamber.

Preferably, in the above technical scheme, the furnace further comprises an ash settling tank, the furnace body is located above the ash settling tank, and the combustion chamber and the ash settling tank are separated by a third furnace bridge.

Preferably, in the above technical solution, the first air inlet is disposed on a right side wall of the second pyrolysis circulation chamber, and the heat dissipation pipe is in an L shape; the lower ends of the radiating pipes are positioned at the middle lower part of the first pyrolysis circulating flow chamber.

Preferably, in the above technical scheme, a first partition plate is disposed in the second pyrolysis circulation chamber, the second air inlet and the second air outlet are both disposed on the left side wall of the second pyrolysis circulation chamber and are distributed in a front-back opposite manner, the first partition plate is disposed between the second air inlet and the second air outlet, and a gap is left between the right end of the first partition plate and the right side wall of the second pyrolysis circulation chamber.

Preferably, in the above technical solution, the settler comprises: a first circulation water tank in which cooling water is provided; the second circulating water tank is internally provided with cooling water, a gap is reserved between the cooling water in the second circulating water tank and the top of the second circulating water tank, the second circulating water tank is arranged below the first circulating water tank, and the second circulating water tank is sequentially provided with a first main sedimentation cavity and a second main sedimentation cavity along the left-right direction; a plurality of sub-sedimentation chambers are sequentially arranged in the first main sedimentation chamber along the left-right direction, the top of each sub-sedimentation chamber is provided with at least one fourth air inlet and at least one fourth air outlet, the fourth air outlet of the first sub-sedimentation chamber is communicated with a secondary exhaust pipe, the fourth air outlet of the next sub-sedimentation chamber is communicated with the fourth air inlet of the previous sub-sedimentation chamber through a connecting pipe, and the fourth air inlet of the last sub-sedimentation chamber is communicated with a secondary air inlet pipe; the secondary exhaust pipe, the connecting pipe and the secondary air inlet pipe are all positioned in the second circulating water tank; the main exhaust pipe is arranged above the first circulating water tank, is communicated with each secondary exhaust pipe and is provided with the third air outlet; a main intake pipe provided above the first circulation water tank, the main intake pipe being communicated with each of the sub-intake pipes; the lower end of the main air pipe is communicated with the top of the second main sedimentation cavity; the top of the main air pipe is provided with a fifth air outlet and a third air inlet, the fifth air outlet is communicated with the main air inlet pipe, a gas collecting pipe is arranged in the main air pipe, and the upper end of the gas collecting pipe is communicated with the fifth air outlet.

Preferably, in the above technical scheme, in each sub-settling chamber, the number of the fourth air outlets and the number of the fourth air inlets are at least two, the fourth air outlets and the fourth air inlets are arranged in a left-right one-to-one correspondence, and all the fourth air outlets are distributed at intervals in the front-rear direction.

Preferably, in the above technical solution, a second partition plate located between the fourth air outlet and the fourth air inlet is disposed at the top of each sub-settling chamber, and the lower end of the second partition plate is located above the liquid level of the cooling water of the corresponding sub-settling chamber; and the first main sedimentation cavity and the second main sedimentation cavity and the adjacent two sub sedimentation cavities are separated by third partition plates, a gap is reserved between the lower end of each third partition plate and the bottom of the second circulating water tank, and the lower end of each third partition plate is positioned below the liquid level of the cooling water of the second circulating water tank.

Preferably, in the above technical solution, the tail gas outlet of the high temperature gasification furnace is communicated with the exhaust port through a safety valve.

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

1. the high-temperature gasification furnace of the waste incineration system can incinerate the waste, and the waste is pyrolyzed at high temperature to remove harmful substances such as dioxin, various viruses and bacteria and the like in the waste; the tail gas generated by burning the garbage in the high-temperature gasification furnace is sent into the secondary combustion chamber, when the tail gas flows through the radiating pipe, the first pyrolysis circulation chamber and the second pyrolysis circulation chamber can be heated, so that the tail gas flowing into the first pyrolysis circulation chamber through the radiating pipe can be subjected to secondary high-temperature pyrolysis gasification, and the tail gas subjected to secondary high-temperature pyrolysis gasification is discharged from the first gas outlet and sequentially enters the spray tower and the sedimentation tank to be sprayed, dedusted, dewatered and cooled, wherein the tail gas is low in temperature and high in moisture; the second air inlet of second pyrolysis circulation room is connected with the tail gas through spraying dust removal and dewatering cooling, can dry and heat this tail gas once more, makes it can be smoothly through the absorption and the discharge of active carbon in the follow-up adsorption tower to the temperature of make full use of second combustion chamber simplifies the msw incineration system structure, improves the exhaust purification effect.

2. The high-temperature gasification furnace is internally provided with a combustion chamber, a first garbage incineration chamber and a second garbage incineration chamber from bottom to top respectively, garbage firstly enters the second garbage incineration chamber from a garbage feeding hole for drying and combustion, and then enters the first garbage incineration chamber and the combustion chamber for full combustion so as to carry out layered drying and combustion on the garbage; and the combustion chamber and the first waste incineration chamber are internally provided with air inlet channels which can supply air and add oxygen into the furnace body, thereby providing sufficient oxygen for waste combustion and achieving the purposes of quickly, efficiently and fully incinerating waste.

3. According to the invention, the spoiler is arranged below the tail gas outlet at the top of the second waste incineration chamber, and a gap is reserved between the periphery of the spoiler and the side wall of the furnace body, so that the high-temperature tail gas which rises in a vortex manner in the furnace body is blocked to generate a suspension layer, and the tail gas stays in the furnace body for more than two seconds, thereby effectively removing dioxin in the tail gas.

4. The radiating pipe is L-shaped, so that high-temperature tail gas in the pipe can be baffled by 90 degrees, and the effect of heating the second pyrolysis circulating chamber is improved.

5. The second pyrolysis circulating chamber is internally provided with a second partition plate so as to change and prolong the path of the low-temperature humid tail gas entering the second pyrolysis circulating chamber, and the tail gas can be fully dried and heated.

6. The settler comprises a first circulating water tank, a second circulating water tank and a main gas pipe, wherein high-temperature tail gas from a spray tower enters the main gas pipe from a third gas inlet, flows downwards from the top of the main gas pipe, then flows into a gas collecting pipe, flows upwards along the gas collecting pipe, flows out from a fifth gas outlet, and forms rotary gas flow after being deflected for multiple times, and can exchange heat with cooling water in the first circulating water tank in the flowing process of the tail gas to reduce the temperature of the tail gas, so that impurities such as water, dust and the like in the tail gas are attached to the pipe wall and finally sink into a second main settling chamber, and the tail gas is subjected to preliminary temperature reduction, water removal and dust removal; tail gas from main trachea comes out loops through a plurality of connecting pipes, carries out cooling dewatering dust removal many times to tail gas once more, and impurity such as adnexed water and dust can sink to the sub-precipitation intracavity that corresponds in every connecting pipe, improves the cooling dewatering dust removal effect of tail gas, simple structure, and manufacturing and maintenance cost are low.

Drawings

Fig. 1 is a schematic structural view of a waste incineration system according to the present invention.

Fig. 2 is a schematic structural view of a high temperature gasification furnace according to the present invention.

Fig. 3 is a schematic structural view of a second combustion chamber according to the present invention.

Figure 4 is a schematic diagram of the structure of a settler according to the invention.

Description of the main reference numerals:

1-automatic garbage feeding device, 2-high temperature gasification furnace, 201-ash settling tank, 202-combustion chamber, 203-first garbage incineration chamber, 204-second garbage incineration chamber, 205-furnace body, 206-tail gas outlet, 207-spoiler, 208-garbage feeding port, 209-second furnace bridge, 210-second air outlet, 211-first furnace bridge, 212-first air outlet, 213-third furnace bridge, 3-second combustion chamber, 301-first pyrolysis circulation chamber, 302-heat dissipation pipe, 303-first air outlet, 304-second air outlet, 305-second air inlet, 306-first clapboard, 307-second pyrolysis circulation chamber, 308-first air inlet, 309-heat dissipation fin, 310-shell, 311-slag outlet, 4-a spray tower, 5-a settler, 501-a second circulating water tank, 502-cooling water, 503-a second partition board, 504-a first circulating water tank, 505-a secondary exhaust pipe, 506-a main exhaust pipe, 507-a connecting pipe, 508-a secondary air inlet pipe, 509-a main air inlet pipe, 510-a fifth air outlet, 511-a third air inlet, 512-a gas collecting pipe, 513-a main air pipe, 514-a third partition board, 515-a second main sedimentation cavity, 516-a fourth air inlet, 517-a fourth air outlet, 518-a sub-sedimentation cavity, 519-a third air outlet, 6-an induced draft fan, 7-an adsorption tower, 8-a safety valve and 9-an air outlet.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

Fig. 1 to 4 are schematic structural views showing a waste incineration system according to a preferred embodiment of the present invention, which includes a high temperature gasification furnace 2, a secondary combustion chamber 3, a spray tower 4, a settler 5, an adsorption tower 7, and an induced draft fan 6. Referring to fig. 1 to 4, the high temperature gasification furnace 2 is used for burning garbage, a garbage feed port 208 is formed in a side wall of the high temperature gasification furnace 2, a tail gas outlet 206 is formed in a top of the high temperature gasification furnace 2, the garbage feed port 208 is connected with the automatic garbage feeding device 1, and the automatic garbage feeding device 1 is a prior art and can automatically add garbage to the high temperature gasification furnace 2. The second combustion chamber 3 comprises a shell 310 and a heat radiation pipe 302, a first pyrolysis circulation chamber 301 and a second pyrolysis circulation chamber 307 are sequentially arranged in the shell 310 from bottom to top, the first pyrolysis circulation chamber 301 and the second pyrolysis circulation chamber 307 are arranged at intervals, and a first air outlet 303 is arranged at the top of the first pyrolysis circulation chamber 301; a first air inlet 308, a second air inlet 305 and a second air outlet 304 are arranged on the second pyrolysis circulating flow chamber 307, and the first air inlet 308 is communicated with the tail gas outlet 206; the heat pipe 302 is disposed in the housing 310, a lower end of the heat pipe 302 is disposed in the first pyrolysis circulation chamber 301, and an upper end of the heat pipe 302 is disposed in the second pyrolysis circulation chamber 307 and is communicated with the first gas inlet 308, so that the heat pipe 302 is communicated with the tail gas outlet 206 of the high temperature gasification furnace 2. The inlet of the spray tower 4 is communicated with the first gas outlet 303, and the spray tower 4 sprays the tail gas by using lime water, so that harmful substances such as dust, acid, alkali and the like in the tail gas can be removed. The settler 5 is provided with a third air inlet 511 and a third air outlet 519, the third air inlet 511 is communicated with the outlet of the spray tower 4, the third air outlet 519 of the settler 5 is communicated with the second air inlet 305 of the second combustion chamber 3, and the tail gas can be cooled, dewatered and dedusted. The inlet of the adsorption tower 7 is communicated with the second gas outlet 304 of the second combustion chamber 3, and the adsorption tower 7 adopts activated carbon for adsorption, so that residual trace harmful gas in the tail gas can be adsorbed, and the tail gas meeting the emission standard is obtained. The import of draught fan 6 and the export intercommunication of adsorption tower 7, and the export of draught fan 6 and gas vent 9 intercommunication for the tail gas flow for whole waste incineration system provides power, and will accord with emission standard's tail gas and carry gas vent 9 to discharge. The high-temperature gasification furnace 2 of the waste incineration system can incinerate the waste, and remove harmful substances such as dioxin, various viruses and bacteria and the like in the waste by pyrolyzing the waste at high temperature; then, tail gas generated by burning garbage in the high-temperature gasification furnace 2 is sucked into the second combustion chamber 3, when the tail gas flows through the radiating pipe 302, the first pyrolysis circulation chamber 301 and the second pyrolysis circulation chamber 307 can be heated, so that the tail gas flowing through the radiating pipe 302 and into the first pyrolysis circulation chamber 301 can be subjected to secondary high-temperature pyrolysis gasification, the tail gas subjected to secondary high-temperature pyrolysis gasification is discharged from the first gas outlet 303 and sequentially enters the spray tower 4 and the sedimentation tank to be sprayed, dedusted, dewatered and cooled, and at this time, the temperature of the tail gas is low and the moisture is high; the second air inlet 305 of the second pyrolysis circulation chamber 307 is connected with the tail gas which is sprayed for dust removal and water removal and cooling, and the tail gas can be dried and heated again, so that the tail gas can be smoothly adsorbed and discharged through activated carbon in the follow-up adsorption tower 7, the temperature of the second combustion chamber 3 is fully utilized, the structure of the waste incineration system is simplified, and the tail gas purification effect is improved.

Referring to fig. 2, preferably, the high temperature gasification furnace 2 includes a furnace body 205, the furnace body 205 is provided with a combustion chamber 202, a first waste incineration chamber 203 and a second waste incineration chamber 204 in sequence from bottom to top, the combustion chamber 202 and the first waste incineration chamber 203 are separated by a first furnace bridge 211, and the first waste incineration chamber 203 and the second waste incineration chamber 204 are separated by a second furnace bridge 209, so as to perform layered drying and combustion on waste. A combustion device is provided in the combustion chamber 202 to support combustion of the garbage in the furnace body 205. A first air inlet channel is arranged on the side wall of the combustion chamber 202, and a plurality of first air outlet holes 212 communicated with the combustion chamber 202 are arranged on the first air inlet channel so as to supply oxygen to the combustion chamber 202; a second air inlet channel is arranged on the side wall of the first garbage incineration chamber 203, and a plurality of second air outlet holes 210 communicated with the first garbage incineration chamber 203 are arranged on the second air inlet channel so as to supply oxygen to the first garbage incineration chamber 203; the first air inlet channel and the second air inlet channel are both connected with an air supply device. The side wall of the second waste incineration chamber 204 is provided with a waste feeding hole 208, and the top of the second waste incineration chamber 204 is provided with a tail gas outlet 206, so that the waste firstly enters the second waste incineration chamber 204 from the waste feeding hole 208 to be dried and combusted, and then enters the first waste incineration chamber 203 and the combustion chamber 202 to be sufficiently combusted, and the waste is dried and combusted layer by layer; and air inlet channels are arranged in the combustion chamber 202 and the first waste incineration chamber 203, so that air can be supplied and oxygen can be added to the furnace body 205, sufficient oxygen can be provided for waste combustion, and the purpose of quickly, efficiently and fully incinerating waste can be achieved.

Referring to fig. 2, in the high-temperature gasification furnace 2, the furnace body 205 may have a cubic shape, a circular truncated cone shape, a cylindrical shape, or the like. Preferably, the furnace body 205 is cylindrical, the first air inlet channel and the second air inlet channel are both annularly distributed in a collinear manner with the axis of the furnace body 205, and all the first air outlet holes 212 are uniformly distributed along the circumferential direction of the first air inlet channel, and all the second air outlet holes 210 are uniformly distributed along the circumferential direction of the second air inlet channel, so that after the gas enters the furnace body 205 through the annular air outlet holes, a vortex-type airflow is formed, and the oxygen is uniformly supplied to the furnace body 205. The furnace 205 may be made of boiler steel, stainless steel, or other high temperature resistant materials. Preferably, the furnace 205 is fabricated from boiler steel.

Referring to fig. 2, the air supply device of the high temperature gasification furnace 2 may be an air inlet pipe communicated with the external air inlet, and may also be a blower. Preferably, the air supply device comprises an air blower, an air outlet of the air blower is respectively communicated with the first air inlet channel and the second air inlet channel, oxygen is supplied to the furnace body 205 in two layers, and oxygen can be rapidly supplied to garbage combustion to enable the garbage combustion to be fully combusted; and high-pressure gas of the blower enters the furnace body 205 through the annular air outlet hole, and forms vortex type high-temperature airflow by combining with heat of garbage combustion in the furnace body 205, so that the temperature in the furnace body 205 is quickly raised, and the temperature in the furnace body 205 can be raised to above 850 ℃ within 5-15 minutes.

Referring to fig. 2, preferably, in the high temperature gasification furnace 2, a spoiler 207 is disposed at the top of the second waste incineration chamber 204 and below the tail gas outlet 206, and a gap is left between the periphery of the spoiler 207 and the side wall of the furnace body 205, so that the high temperature tail gas which rises in a vortex manner in the furnace body 205 is blocked to generate a suspension layer, and the tail gas stays in the furnace body 205 for more than two seconds, thereby effectively removing dioxin in the tail gas. Wherein, the spoiler 207 is made of a high temperature resistant metal material.

Referring to fig. 2, preferably, the high temperature gasification furnace 2 further includes an ash settling tank 201, the furnace body 205 is located above the ash settling tank 201, and the combustion chamber 202 is separated from the ash settling tank 201 by a third bridge 213, so that the ash burnt out in the furnace body 205 can fall to the bottom ash settling tank 201 through the third bridge 213 to collect the ash. It is further preferable that the through-hole of the second grate 209 is larger than the through-hole of the first grate 211, and the through-hole of the first grate 211 is larger than the through-hole of the third grate 213, so as to facilitate the stratified combustion of garbage and the collection of ash.

Referring to fig. 2, in the high temperature gasification furnace 2, the combustion apparatus mainly plays a combustion supporting role for drying and incinerating the garbage. The combustion device can be a combustion device using liquid fuel or a combustion device using solid fuel. Preferably, the combustion apparatus comprises a fuel inlet and fuel arranged on the side wall of the combustion chamber 202, the fuel comprises firewood, and when the combustion apparatus is used, the firewood is only required to be put into the combustion chamber 202 through the fuel inlet and the firewood is ignited.

Referring to fig. 3, in the second combustion chamber 3, the first pyrolysis circulation chamber 301 may have a cylindrical, rectangular parallelepiped or conical shape, and the second pyrolysis circulation chamber 307 may also have a cylindrical, rectangular parallelepiped or conical shape. Preferably, the first pyrolysis circulation chamber 301 has a cylindrical shape, and the second pyrolysis circulation chamber 307 has a rectangular parallelepiped shape.

Referring to fig. 3, preferably, in the second combustion chamber 3, the first air inlet 308 is disposed on the right side wall of the second pyrolysis circulation chamber 307, the heat dissipation pipe 302 is L-shaped, that is, the heat dissipation pipe 302 comprises a horizontal pipe and a vertical pipe, the horizontal pipe is disposed in the second pyrolysis circulation chamber 307, and the outer end of the horizontal pipe is communicated with the first air inlet 308; the vertical pipe is vertically arranged in the first pyrolysis circulation chamber 301, and the upper end of the vertical pipe upwards penetrates through the wall surface between the first pyrolysis circulation chamber 301 and the second pyrolysis circulation chamber 307, extends into the second pyrolysis circulation chamber 307, and is communicated with the inner end of the transverse pipe. The L-shaped heat pipe 302 can deflect the high temperature exhaust gas in the pipe by 90 degrees, thereby improving the effect of heating the second pyrolysis circulation chamber 307. And the lower end of the heat pipe 302 is located at the middle lower part of the first pyrolysis circulation chamber 301, so as to extend the flow path of the exhaust gas, and the exhaust gas is discharged from the first gas outlet 303 after the first pyrolysis circulation chamber 301 is sufficiently heated. Wherein, the outer sidewall of the heat pipe 302 is provided with heat dissipating fins 309, so as to improve the effect of the heat pipe 302 heating the first pyrolysis circulation chamber 301 and the second pyrolysis circulation chamber 307.

Referring to fig. 3, preferably, in the second combustion chamber 3, a first partition 306 is disposed in the second pyrolysis circulation chamber 307, the second air inlet 305 and the second air outlet 304 are disposed on the left side wall of the second pyrolysis circulation chamber 307 and are distributed in a front-to-back opposite manner, the first partition 306 is disposed between the second air inlet 305 and the second air outlet 304 to partition the second pyrolysis circulation chamber 307 into two front and back heating chambers, and a gap is left between the right end of the first partition 306 and the right side wall of the second pyrolysis circulation chamber 307 to connect the two heating chambers, so that the path of the low-temperature humid exhaust gas entering the second pyrolysis circulation chamber 307 can be changed and extended, and the low-temperature humid exhaust gas can be sufficiently dried and heated. It is further preferable that the heat pipe 302 and the second air inlet 305 are both located in the heating chamber on the same side of the first partition 306, so as to further improve the heating effect.

Referring to fig. 3, preferably, in the second combustion chamber 3, the bottom of the first pyrolysis circulation chamber 301 is provided with a slag discharge port 311, and the slag discharge port 311 is provided with a cover plate capable of being opened and closed. First pyrolysis circulation room 301 can fully decompose tail gas at the in-process of secondary high temperature pyrolysis gasification tail gas, and the lime-ash that produces among the tail gas decomposition process can pile up in the bottom of second pyrolysis circulation room 307, through row's cinder notch 311, can be convenient for the discharge of lime-ash. Wherein the housing 310 may be made of high temperature resistant steel, preferably, the housing 310 is made of boiler steel, which is sturdy and durable.

Referring to fig. 4, the settler 5 preferably comprises a first circulation water tank 504, a second circulation water tank 501, a main gas exhaust pipe 506, a main gas inlet pipe 509, and a main gas pipe 513. The first circulation water tank 504 is provided therein with cooling water 502. Cooling water 502 is provided in the second circulation water tank 501, and a gap is provided between the cooling water 502 in the second circulation water tank 501 and the top thereof. The second circulation water tank 501 is disposed below the first circulation water tank 504, and the second circulation water tank 501 is sequentially provided with a first main sedimentation chamber and a second main sedimentation chamber 515 in the left-right direction. A plurality of sub-sedimentation cavities 518 are sequentially arranged in the first main sedimentation cavity along the left-right direction, the number of the sub-sedimentation cavities 518 is at least three, the top of each sub-sedimentation cavity 518 is provided with at least one fourth air inlet 516 and at least one fourth air outlet 517, the fourth air outlet 517 of the first sub-sedimentation cavity 518 is communicated with one secondary exhaust pipe 505, the fourth air outlet 517 of the next sub-sedimentation cavity 518 is communicated with the fourth air inlet 516 of the previous sub-sedimentation cavity 518 through a connecting pipe 507, and the fourth air inlet 516 of the last sub-sedimentation cavity 518 is communicated with one secondary air inlet pipe 508, so that each sub-sedimentation cavity 518 is connected in series. All the secondary exhaust pipes 505, all the connection pipes 507, and all the secondary intake pipes 508 are located in the second circulation water tank 501. The main exhaust pipe 506 is provided above the first circulation water tank 504, the main exhaust pipe 506 is communicated with each of the sub exhaust pipes 505, and the main exhaust pipe 506 is provided with a third air outlet 519. A main intake duct 509 is provided above the first circulation tank 504, and the main intake duct 509 communicates with each of the sub-intake ducts 508. The main gas pipe 513 is arranged in the first circulating water tank 504, and the lower end of the main gas pipe 513 is communicated with the top of the second main sedimentation chamber 515; the top of the main air pipe 513 is provided with a fifth air outlet 510 and a third air inlet 511, the fifth air outlet 510 is communicated with the main air inlet pipe 509, a gas collecting pipe 512 is arranged in the main air pipe 513, and the upper end of the gas collecting pipe 512 is communicated with the fifth air outlet 510. High-temperature tail gas from the spray tower 4 enters the main gas pipe 513 from the third gas inlet 511, flows downwards from the top of the main gas pipe 513, then flows into the gas collecting pipe 512, flows upwards along the gas collecting pipe 512, flows out from the fifth gas outlet 510, forms rotary gas flow after being baffled for many times, can exchange heat with the cooling water 502 in the first circulating water tank 504 in the flowing process of the tail gas, reduces the temperature of the tail gas, enables impurities such as water, dust and the like in the tail gas to be attached to the pipe wall, finally sinks into the second main precipitation cavity 515, and primarily cools, dewaters and removes dust for the tail gas; tail gas from main trachea 513 goes out loops through a plurality of connecting pipes 507, carries out cooling dewatering dust removal many times to tail gas once more, and impurity such as adnexed water and dust can sink to the sub-sedimentation chamber 518 that corresponds in every connecting pipe 507, improves the cooling dewatering dust removal effect of tail gas, simple structure, and manufacturing and maintenance cost are low.

Referring to fig. 4, preferably, in the settler 5, the lower end of the gas collecting pipe 512 is located at the middle lower part of the main gas pipe 513, so as to prolong the flow path of the tail gas and further improve the cooling, water removing and dust removing effects. The upper end of the main air pipe 513 extends upward out of the top of the first circulating water tank 504, and the second air inlet 305 and the second air outlet 304 are both located above the first circulating water tank 504, so that the main air pipe 513 can be connected conveniently.

Referring to fig. 4, preferably, in each sub-settling chamber 518 of the settler 5, the number of the fourth gas outlets 517 and the number of the fourth gas inlets 516 are at least two, and the fourth gas outlets 517 and the fourth gas inlets 516 are arranged in a left-to-right one-to-one correspondence, so as to facilitate the connection of the connecting pipes 507. All the fourth air outlets 517 are distributed at intervals along the front-rear direction, and all the fourth air inlets 516 are also distributed at intervals along the front-rear direction, so that the connecting pipe 507, the secondary air inlet pipe 508 and the secondary air outlet pipe 505 are also distributed at intervals along the front-rear direction, the tail gas coming out of the main air inlet pipe 509 is divided into a plurality of branches for cooling, and the cooling effect is better. Wherein, every connecting pipe 507 is the U-shaped that the opening faces down, and the top of every connecting pipe 507 is located the well upper portion of first circulation water tank 504, prolongs the route of tail gas, further improves the cooling dewatering dust removal effect of tail gas.

Referring to fig. 4, preferably, in the settler 5, the top of each sub-settling chamber 518 is provided with a second partition 503 located between the fourth air outlet 517 and the fourth air inlet 516, and the lower end of the second partition 503 is located above the liquid level of the cooling water 502 of the corresponding sub-settling chamber 518, so as to prolong the path of the tail gas flowing through the sub-settling chamber 518 and improve the tail gas cooling effect. The first main sedimentation cavity and the second main sedimentation cavity 515 and the adjacent two sub sedimentation cavities 518 are separated by a third partition plate 514, a gap is reserved between the lower end of each third partition plate 514 and the bottom of the second circulation water tank 501, and the lower end of each third partition plate 514 is positioned below the liquid level of the cooling water 502 in the second circulation water tank 501, so that the cooling water 502 in the first circulation water tank 504 flows between the first main sedimentation cavity and the second main sedimentation cavity 515 and between the adjacent two sub sedimentation cavities 518.

Referring to fig. 1, preferably, the tail gas outlet 206 of the high-temperature gasification furnace 2 is communicated with the exhaust port 9 through a safety valve 8, and in a normal state, the safety valve 8 is in a closed state, and when the waste incineration system fails and needs to be maintained, the safety valve 8 is opened to directly discharge the tail gas in the high-temperature gasification furnace 2 to the exhaust port 9, so that the waste incineration system can be maintained conveniently.

When the garbage incinerator is used, the garbage is pushed into the high-temperature gasification furnace 2 by the automatic garbage feeding device 1 to be incinerated, the temperature of the high-temperature gasification furnace 2 can reach above 850 ℃, the garbage can be pyrolyzed, harmful substances such as dioxin, various viruses and bacteria and the like in the garbage are removed, the garbage is incinerated into ash and tail gas, the ash is discharged through the ash settling tank 201 at the bottom, and the tail gas is discharged through the tail gas outlet 206 and is discharged into the first pyrolysis circulating chamber 301 of the secondary combustion chamber 3; the first pyrolysis circulating chamber 301 of the second combustion chamber 3 can utilize a high-temperature oxygen-rich environment to carry out secondary high-temperature pyrolysis gasification on the tail gas which is not fully pyrolyzed, so that the tail gas is fully pyrolyzed; the tail gas fully pyrolyzed by the first pyrolysis circulating chamber 301 of the second combustion chamber 3 is conveyed into the spray tower 4, and the tail gas is sprayed by lime water to remove harmful substances such as dust, acid, alkali, sulfur and the like in the tail gas; conveying the tail gas treated by the spray tower 4 into a settler 5, cooling and dedusting the tail gas by using the settler 5, discharging water, and reducing the temperature of the tail gas to be below 70 ℃; the tail gas that is handled through settler 5 is carried in second pyrolysis circulation room 307 of second combustion chamber 3 again, heaies up and dries tail gas, guarantees that the tail gas temperature can be within 300 ℃, makes it can carry out activated carbon adsorption through subsequent adsorption tower 7 smoothly, adsorbs remaining trace toxic harmful gas in the tail gas, obtains the tail gas that accords with emission standard to discharge through gas vent 9.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. A waste incineration system, comprising:

the high-temperature gasification furnace is used for burning garbage, a garbage feed port is formed in the side wall of the high-temperature gasification furnace, a tail gas outlet is formed in the top of the high-temperature gasification furnace, and the garbage feed port is connected with an automatic garbage feeding device;

the second combustion chamber comprises a shell and a radiating pipe, a first pyrolysis circulating flow chamber and a second pyrolysis circulating flow chamber are sequentially arranged in the shell from bottom to top, and a first air outlet is formed in the top of the first pyrolysis circulating flow chamber; the second pyrolysis circulation chamber is provided with a first air inlet, a second air inlet and a second air outlet, and the first air inlet is communicated with the tail gas outlet; the radiating pipe is arranged in the shell, the lower end of the radiating pipe is positioned in the first pyrolysis circulating chamber, and the upper end of the radiating pipe is positioned in the second pyrolysis circulating chamber and communicated with the first air inlet;

the inlet of the spray tower is communicated with the first air outlet;

the settler is provided with a third air inlet and a third air outlet, the third air inlet is communicated with the outlet of the spray tower, and the third air outlet of the settler is communicated with the second air inlet of the second combustion chamber;

an inlet of the adsorption tower is communicated with the second air outlet of the second combustion chamber; and

and the inlet of the induced draft fan is communicated with the outlet of the adsorption tower, and the outlet of the induced draft fan is communicated with the exhaust port.

2. The waste incineration system according to claim 1, wherein the high-temperature gasification furnace comprises a furnace body, the furnace body is provided with a combustion chamber, a first waste incineration chamber and a second waste incineration chamber from bottom to top in sequence, the combustion chamber and the first waste incineration chamber are separated by a first furnace bridge, and the first waste incineration chamber and the second waste incineration chamber are separated by a second furnace bridge; a combustion device is arranged in the combustion chamber; a first air inlet channel is arranged on the side wall of the combustion chamber, a plurality of first air outlet holes communicated with the combustion chamber are formed in the first air inlet channel, a second air inlet channel is arranged on the side wall of the first garbage incineration chamber, a plurality of second air outlet holes communicated with the first garbage incineration chamber are formed in the second air inlet channel, and the first air inlet channel and the second air inlet channel are both connected with an air supply device; the lateral wall of second waste incineration chamber is equipped with the rubbish feed inlet, just the top of second waste incineration chamber is equipped with the tail gas export.

3. A waste incineration system according to claim 2, characterised in that the top of the second waste incineration chamber is provided with a spoiler below the exhaust gas outlet.

4. The waste incineration system of claim 2, further comprising an ash settling tank, wherein the furnace body is located above the ash settling tank, and the combustion chamber is separated from the ash settling tank by a third grate.

5. The waste incineration system of claim 1, wherein the first air inlet is disposed on a right sidewall of the second pyrolysis circulation chamber, and the heat dissipation pipe is L-shaped; the lower ends of the radiating pipes are positioned at the middle lower part of the first pyrolysis circulating flow chamber.

6. The waste incineration system of claim 1, wherein a first partition plate is disposed in the second pyrolysis circulation chamber, the second gas inlet and the second gas outlet are disposed on a left side wall of the second pyrolysis circulation chamber and are distributed in a front-to-back opposite manner, the first partition plate is disposed between the second gas inlet and the second gas outlet, and a gap is left between a right end of the first partition plate and a right side wall of the second pyrolysis circulation chamber.

7. Waste incineration system according to claim 1, characterised in that the settler comprises:

a first circulation water tank in which cooling water is provided;

the second circulating water tank is internally provided with cooling water, a gap is reserved between the cooling water in the second circulating water tank and the top of the second circulating water tank, the second circulating water tank is arranged below the first circulating water tank, and the second circulating water tank is sequentially provided with a first main sedimentation cavity and a second main sedimentation cavity along the left-right direction; a plurality of sub-sedimentation chambers are sequentially arranged in the first main sedimentation chamber along the left-right direction, the top of each sub-sedimentation chamber is provided with at least one fourth air inlet and at least one fourth air outlet, the fourth air outlet of the first sub-sedimentation chamber is communicated with a secondary exhaust pipe, the fourth air outlet of the next sub-sedimentation chamber is communicated with the fourth air inlet of the previous sub-sedimentation chamber through a connecting pipe, and the fourth air inlet of the last sub-sedimentation chamber is communicated with a secondary air inlet pipe; the secondary exhaust pipe, the connecting pipe and the secondary air inlet pipe are all positioned in the second circulating water tank;

the main exhaust pipe is arranged above the first circulating water tank, is communicated with each secondary exhaust pipe and is provided with the third air outlet;

a main intake pipe provided above the first circulation water tank, the main intake pipe being communicated with each of the sub-intake pipes; and

the main air pipe is arranged in the first circulating water tank, and the lower end of the main air pipe is communicated with the top of the second main sedimentation cavity; the top of the main air pipe is provided with a fifth air outlet and a third air inlet, the fifth air outlet is communicated with the main air inlet pipe, a gas collecting pipe is arranged in the main air pipe, and the upper end of the gas collecting pipe is communicated with the fifth air outlet.

8. The waste incineration system of claim 7, wherein in each sub-sedimentation chamber, the number of the fourth air outlets and the number of the fourth air inlets are at least two, the fourth air outlets and the fourth air inlets are arranged in a left-right one-to-one correspondence, and all the fourth air outlets are distributed at intervals in the front-rear direction.

9. The waste incineration system of claim 7, wherein the top of each of the sub-settling chambers is provided with a second partition plate located between the fourth air outlet and the fourth air inlet, and the lower end of the second partition plate is located above the level of the cooling water of the corresponding sub-settling chamber; and the first main sedimentation cavity and the second main sedimentation cavity and the adjacent two sub sedimentation cavities are separated by third partition plates, a gap is reserved between the lower end of each third partition plate and the bottom of the second circulating water tank, and the lower end of each third partition plate is positioned below the liquid level of the cooling water of the second circulating water tank.

10. The waste incineration system of claim 1, wherein the tail gas outlet of the high temperature gasification furnace is communicated with the exhaust port through a safety valve.