CN108895464B - Secondary air type waste incinerator - Google Patents

Secondary air type waste incinerator Download PDF

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Publication number
CN108895464B
CN108895464B CN201810420511.7A CN201810420511A CN108895464B CN 108895464 B CN108895464 B CN 108895464B CN 201810420511 A CN201810420511 A CN 201810420511A CN 108895464 B CN108895464 B CN 108895464B
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Prior art keywords
combustion chamber
furnace body
plate
air inlet
secondary combustion
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CN201810420511.7A
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CN108895464A (en
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张继宁
潘慧敏
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Shexian Green Resources Environmental Protection Equipment Co ltd
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Shexian Green Resources Environmental Protection Equipment Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/101—Combustion in two or more stages with controlled oxidant supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/103—Combustion in two or more stages in separate chambers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention discloses a secondary air inlet type garbage incinerator, which comprises a incinerator body and a combustion chamber, wherein the combustion chamber comprises a primary combustion chamber and a secondary combustion chamber; the primary combustion chamber is arranged at the lower part of the whole furnace body, a fire bar is arranged at the center of the lower conical bottom of the primary combustion chamber, and the inspection opening extends out of the furnace body from the edge of one end, parallel to the back of the fire bar, of the fire bar; the secondary air inlet duct and the feed inlet are both arranged in the middle of the whole furnace body and are arranged in parallel; the air inlet of the secondary air inlet duct is arranged on one side of the air duct; air inlet holes in the air supply are respectively arranged on the lower conical plate and the inner straight plate of the secondary air inlet duct; the secondary combustion chamber is arranged at the upper part of the whole furnace body; the secondary combustion chamber flue is arranged at the top of the secondary combustion chamber and surrounds the whole inner circle; the inner circumference straight panel is provided with a secondary combustion chamber flue gas outlet; the flue gas outlet pipe is connected with the flue of the secondary combustion chamber and extends out of the furnace body. The invention provides a domestic garbage incinerator which can enable smoke to achieve the aim of secondary combustion without adding auxiliary fuel. Reduce the generation of flue gas and the pollutant discharge therein, realize the harmless incineration disposal of the domestic garbage.

Description

Secondary air type waste incinerator
Technical Field
The invention belongs to the technical field of household garbage treatment equipment, and relates to a garbage incinerator of a matching unit in a household garbage harmless incineration treatment device.
Background
Chinese patent No. 02273965.3 discloses a patent technology of a waste incinerator capable of utilizing output heat energy, which mainly comprises the following steps: in the furnace chamber of incinerator body, wherein including being located feed inlet department and being equipped with the flame division board, link at furnace intracavity and specially be equipped with the air bleeder through the hinge, all do not distribute at each bleeder front end and have the nozzle, utilize the outside air supply of air-blower blast, forced convection mode promptly, utilize the air-blower blast air to get into lateral conduit and nozzle, blow the air into the furnace chamber. The upper part of the hearth cavity is provided with a waste heat water heater and a water injection pipe which are arranged at the lower part of the water tank, and a drain pipe is arranged at the upper part of the water tank.
This patent technique has adopted to set up the air bleeder at the furnace inner wall and has carried out air supply oxygenation and the required air of rubbish co-combustion hardly gets into the rubbish inlayer, can only with top layer rubbish mixed action, drops into the difficult abundant burning of rubbish in the furnace in proper order, leads to the difficult quilt of central temperature in the furnace to promote. In addition, the waste heat hot water tank arranged on the hearth can directly influence the improvement and the stability of the central temperature of the hearth. And then the rationality of the whole smoke flow in the chamber is influenced.
The patent document with Chinese patent number 200410014868.3B discloses a patent technology of a domestic garbage incinerator, and the main technical proposal is as follows: the incinerator comprises a furnace body, a rotary drying device, a conical refining device, a combustion chamber smoke outlet, a slag discharge device, an air inlet system, a smoke treatment device and a smoke exhaust pipe. And is provided with a microcomputer. The rotary drying device arranged on the upper part of the furnace body can dry the domestic garbage entering the hearth into a loose and dry state and convey the loose and dry state to the combustion chamber.
This patent technique only focuses on solving the rubbish stoving problem of preheating before getting into the combustion chamber, does not reflect suitable technical scheme to the produced flue gas of rubbish through burning in-chamber processing flow. For the comprehensive analysis of the above two patent technologies, besides the above-mentioned defects, the establishment of the relationship between the conservation of mass, the mass ratio of the density state of the generated flue gas, and other variables such as temperature, also has the defects of physical reality and general balance, and the defects of secondary combustion of the flue gas to reduce the generation of harmful substances in the cavity, and the like, and is still not perfect in general.
Disclosure of Invention
The invention aims to solve the main problem of providing a domestic garbage incinerator which can ensure that smoke can achieve the secondary combustion purpose without adding auxiliary fuel. Reduce the generation of flue gas and the pollutant discharge therein, realize the harmless incineration disposal of the domestic garbage.
A secondary air inlet type garbage incinerator comprises a furnace body and a combustion chamber, wherein the combustion chamber comprises a primary combustion chamber and a secondary combustion chamber;
the primary combustion chamber is arranged at the lower part of the whole furnace body, a fire bar is arranged in the middle of the lower conical bottom of the primary combustion chamber, and the fire bar is placed on a furnace bottom plate; the inspection opening extends out of the furnace body from the edge of one end of the furnace bar back parallel to the furnace body;
the secondary air inlet duct and the feed inlet are both arranged in the middle of the whole furnace body and are arranged in parallel; the air inlet of the secondary air inlet duct is arranged on one side of the air duct; the lower conical plate and the inner straight plate of the secondary air inlet duct are respectively provided with air inlet holes for supplying air inside, and the air inlet holes are uniformly distributed in a crossed manner along the periphery;
the secondary combustion chamber is arranged at the upper part of the whole furnace body; the secondary combustion chamber flue is arranged at the top of the secondary combustion chamber and surrounds the whole inner circle; the inner circumference straight panel is provided with a secondary combustion chamber flue gas outlet; the flue gas outlet pipe is connected with the flue of the secondary combustion chamber and extends out of the furnace body.
Furthermore, the furnace body is composed of an outer plate and an inner plate, and a high-temperature resistant protective layer formed by pouring a pouring material is arranged between the outer plate and the inner plate.
The combustion chamber in the furnace body is arranged in a multi-section wave folding manner from bottom to top and is welded into an intercommunicated whole through a multi-section inner core steel plate; the inner wall of the combustion chamber is provided with a high-temperature resistant protective layer formed by pouring castable.
Furthermore, a partition space with a certain gap is reserved between the furnace body high-temperature resistant protective layer and the combustion chamber high-temperature resistant protective layer.
Furthermore, the secondary combustion chamber flue is composed of a space between the outer plate, the inner plate, the cover plate and the outer wall of the secondary combustion chamber; and a high-temperature resistant protective layer formed by pouring a pouring material is arranged between the outer plate and the inner plate.
Furthermore, a cover plate is welded on the furnace body at the bottom of the upper conical plate of the secondary combustion chamber, and a reinforcing rib plate is arranged between the cover plate and the flue heat-insulating layer of the secondary combustion chamber.
Furthermore, a reinforcing rib plate is arranged on the part of the furnace bottom plate, which exceeds the straight surface of the furnace body.
The method and the position for supplying oxygen by secondary air supply in the invention are beneficial to the full combustion of the secondary combustion chamber, the flue gas is concentrated at the position of the locking port, and the mixing of the combustion-supporting air and the flue gas of the secondary combustion is beneficial to promote the full combustion of combustible gas mixed in the flue gas. The smoke temperature of the secondary combustion chamber can be higher than the smoke temperature released by primary combustion on the premise of not adding auxiliary fuel, so that the purpose of secondary combustion is achieved.
Drawings
FIG. 1 is a front sectional view;
FIG. 2 is a side sectional view;
FIG. 3 is a top view of the secondary air intake duct;
FIG. 4 is a top view of a secondary combustion flue;
Detailed Description
As shown in fig. 1 and 2, the main body of the secondary air type garbage incinerator of the present invention comprises a furnace body and a combustion chamber, wherein the combustion chamber is located in the furnace body, and comprises a primary combustion chamber 1 and a secondary combustion chamber 2; the primary combustion chamber 1 is arranged at the lower part of the whole furnace body, a fire bar 15 is arranged at the center of the lower conical bottom of the primary combustion chamber, and the fire bar 15 is placed on a furnace bottom plate 16; the inspection opening 6 extends out of the furnace body from the edge of the parallel end of the back of the fire bar and is provided with an inspection opening sealing door 26;
the secondary air inlet duct 3 and the feed inlet 5 are both arranged in the middle of the whole furnace body and are arranged in parallel; the feeding port is connected with the inner part of the combustion chamber and is processed by locking, the space outside the locking is a secondary air inlet channel which surrounds the whole locking, and a sealed feeding port outer door 25 is arranged outside the feeding port. The air inlet 10 is arranged at one side of the air duct and is horn-shaped in the vertical direction, and the opening part is square or round according to the aperture of the air distribution equipment, the air feeder or the air blower and is used by matching with the opening of a flange. The straight panel 32 in the middle of the combustion chamber is provided with an air supply hole 23, the conical panel 33 in the middle of the combustion chamber is provided with a conical air inlet hole 24, the air supply hole 23 and the air inlet hole 24 are necessary openings for supplying air and supplying oxygen to the hearth by an air duct, and the air inlet holes are uniformly distributed in a crossed manner along the periphery.
The secondary combustion chamber shown in the figure II is arranged at the upper part of the furnace main body, the secondary combustion chamber is provided with a secondary combustion chamber flue part shown in the figure 4 which is positioned at the top of the secondary combustion chamber and surrounds the whole inner cavity, and the straight surface of the inner cavity is provided with a secondary combustion chamber flue gas outlet shown in the figure 8.
The secondary combustion chamber 2 of the invention is arranged at the upper part of the whole furnace body; the secondary combustion chamber flue 4 is arranged at the top of the secondary combustion chamber and surrounds the whole inner circle; the inner circumference straight panel is provided with a secondary combustion chamber flue gas outlet 8; the flue gas outlet pipe joint 7 is communicated with a flue of the secondary combustion chamber and extends out of the furnace body. The smoke outlets of the secondary combustion chamber are regularly distributed from large to small from the first outlet of the flue partition plate until the smoke outlets are connected in the pipe direction, the smoke moves from the smoke outlet at the edge of the flue partition plate to flow to the smoke outlet pipe in an upward rotating manner, the whole smoke moves in a rolling manner in the chamber to increase the retention time of the smoke in the internal high-temperature period, and large-particle smoke and heavy metal particles thereof can return to the combustion chamber for combustion along with the continuous rolling movement of the smoke. On the premise of secondary oxygen supply, the flue gas can be more fully combusted after entering the secondary combustion chamber, so that the temperature of the flue gas in the secondary combustion chamber is higher than that of the combustion chamber, and dioxin compositions are effectively decomposed and destroyed. Creates better treatment conditions for the treatment process of the rear flue gas treatment system.
The furnace body of the invention is composed of an outer plate 11 and an inner plate 12, and a high-temperature resistant protective layer formed by pouring casting materials is arranged between the outer plate and the inner plate. The combustion chambers in the furnace body are arranged in a multi-section wave folding mode from bottom to top and are welded into an intercommunicated whole through the core steel plates 14 in the multi-section surfaces; the inner wall of the combustion chamber is provided with a high-temperature resistant protective layer formed by pouring a pouring material 18. The secondary combustion chamber flue is composed of a space between an outer plate I19, an inner plate I20, a cover plate 13 and the outer wall of the secondary combustion chamber; and a high-temperature resistant protective layer formed by pouring a pouring material is arranged between the outer plate and the inner plate. A certain space, namely a partition space 22 is reserved between the furnace body heat-insulating layer and the high-temperature-resistant protective layer to prevent the heat energy of the inner core from scattering along the solid. The cover plate 13 and the arc top plate 27 of the secondary combustion chamber form the top surface of the furnace body, the outer plate I, the cover plate and the outer plate form the outer surface, and the furnace bottom plate forms the bottom surface of the furnace body.
According to the invention, the cover plate 9 is welded on the furnace body at the bottom of the upper conical plate 34 of the secondary combustion chamber, the reinforcing rib plate 28 is arranged between the cover plate and the flue heat-insulating layer of the secondary combustion chamber, and the reinforcing rib plate 28 is also arranged at the part of the furnace bottom plate, which exceeds the straight surface of the furnace body. The invention arranges a heat-insulating layer partition space 21 between the secondary combustion chamber and the furnace body to prevent heat energy from dissipating.
The position of the air supply outlet of the secondary air inlet duct of the invention is necessarily arranged at one side of the outer part of the main body, and additionally, forced air supply is carried out, in order to change the normal stress of airflow entering the air duct, a shunting iron 31 is welded at the position of an inner hearth plate corresponding to the air inlet, thereby preventing the air inlet flow from impacting the panel of the feeding side wall in the drawing to generate infinite backflow, and preventing the air quantity entering each air supply hole from being uneven to influence the incineration effect.
In order to promote the smoke to roll in the hearth and enable the high-temperature smoke to stay in the hearth for a little longer time, the flue partition plate 30 of the two smoke chambers is arranged at the effective space position between the smoke outlet pipe joint 7 and the maximum smoke outlet, and the whole vertical space is completely sealed. The flue gas outlets 8 of the secondary combustion chamber are distributed from the edge of the flue partition plate in proportion from large to small, the largest flue gas outlet is a flue gas outlet impact point, and other flue gas outlets are led out from the flue gas outlet pipe joint 7 along the flue in a transverse compression rotational flow mode under the action of flue gas flowing force.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims (1)

1. A secondary air type garbage incinerator comprises a furnace body and a combustion chamber, and is characterized in that,
the combustion chamber comprises a primary combustion chamber and a secondary combustion chamber;
the primary combustion chamber is arranged at the lower part of the whole furnace body, a fire bar is arranged in the middle of the lower conical bottom of the primary combustion chamber, and the fire bar is placed on the furnace bottom plate; the inspection opening extends out of the furnace body from the edge of one end of the furnace bar back parallel to the furnace body;
the secondary air inlet duct and the feed inlet are both arranged in the middle of the whole furnace body and are arranged in parallel; the air inlet of the secondary air inlet duct is arranged on one side of the air duct; the lower conical plate and the inner straight plate of the secondary air inlet duct are respectively provided with air inlet holes for supplying air to the interior of the combustion chamber, and the air inlet holes are uniformly distributed in a crossed manner along the periphery;
the secondary combustion chamber is arranged at the upper part of the whole furnace body; the secondary combustion chamber flue is arranged at the top of the secondary combustion chamber and surrounds the whole inner circle; the inner circumference straight panel is provided with a secondary combustion chamber flue gas outlet; the flue gas outlet pipe is connected with a flue of the secondary combustion chamber and extends out of the furnace body;
the furnace body consists of an outer plate and an inner plate, and a high-temperature resistant protective layer formed by pouring a casting material is arranged between the outer plate and the inner plate;
the combustion chambers in the furnace body are arranged in a multi-section wave folding mode from bottom to top and are welded into an intercommunicated whole through multi-section inner core steel plates; a high-temperature resistant protective layer formed by pouring a castable is arranged on the inner wall of the combustion chamber;
a partition space with a certain gap is reserved between the furnace body high-temperature resistant protective layer and the combustion chamber high-temperature resistant protective layer;
the secondary combustion chamber flue is composed of an outer plate I, an inner plate I, a space between a cover plate and the outer wall of the secondary combustion chamber; a high-temperature-resistant protective layer formed by pouring a pouring material is arranged between the outer plate I and the inner plate I;
a cover plate is welded on the furnace body at the bottom of the upper conical plate of the secondary combustion chamber, and a reinforcing rib plate is arranged between the cover plate and the flue heat-insulating layer of the secondary combustion chamber;
the part of the furnace bottom plate, which exceeds the straight surface of the furnace body, is provided with a reinforcing rib plate;
and a shunting iron is welded on the inner combustion chamber corresponding to the air inlet.
CN201810420511.7A 2018-05-04 2018-05-04 Secondary air type waste incinerator Active CN108895464B (en)

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CN108895464B true CN108895464B (en) 2020-05-22

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112029537B (en) * 2020-08-11 2021-07-09 江苏新链新科技有限公司 Device for producing fuel gas by using biomass material
CN116518383B (en) * 2023-05-05 2023-12-12 重庆稷锦炉业有限公司 Combustion chamber for vehicle-mounted garbage incinerator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1151343A (en) * 1997-08-04 1999-02-26 Hitachi Zosen Corp Fluidized bed incinerator
CN205065700U (en) * 2015-10-23 2016-03-02 山东永能节能环保服务股份有限公司 Novel high -efficiency biological matter combustor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10205734A (en) * 1997-01-14 1998-08-04 Takuma Co Ltd Secondary air supply method in stoker type combustion furnace

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1151343A (en) * 1997-08-04 1999-02-26 Hitachi Zosen Corp Fluidized bed incinerator
CN205065700U (en) * 2015-10-23 2016-03-02 山东永能节能环保服务股份有限公司 Novel high -efficiency biological matter combustor

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