CN110805910A - Secondary combustion chamber for household garbage flue gas - Google Patents
Secondary combustion chamber for household garbage flue gas Download PDFInfo
- Publication number
- CN110805910A CN110805910A CN201911050216.8A CN201911050216A CN110805910A CN 110805910 A CN110805910 A CN 110805910A CN 201911050216 A CN201911050216 A CN 201911050216A CN 110805910 A CN110805910 A CN 110805910A
- Authority
- CN
- China
- Prior art keywords
- combustion chamber
- secondary combustion
- flue gas
- flue
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 76
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000003546 flue gas Substances 0.000 title claims abstract description 35
- 239000002893 slag Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000011810 insulating material Substances 0.000 claims abstract description 7
- 238000004321 preservation Methods 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000009537 plain noodles Nutrition 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a secondary combustion chamber for household garbage flue gas, which comprises a heat-insulating sealing cover flange, a preheating conical cover, a heat-insulating sealing cover, a fireproof heat-insulating material, a secondary combustion chamber cavity, an outer shell, a furnace door, furnace legs, an air intake grate, an ash remover, a slag remover, a suppressed flue and a porous high-temperature heat accumulator, wherein the furnace legs are fixedly arranged at the bottom of the outer shell, the lower ends of the furnace legs are respectively and fixedly connected with an embedded connecting plate, the fireproof heat-insulating material is arranged on the top side of the outer shell, the furnace door is arranged on one side of the bottom of the outer shell, the secondary combustion chamber cavity is arranged on the inner side of the outer shell, and a flue gas outlet of the secondary combustion chamber cavity is. The invention ensures that the temperature of the flue gas entering the secondary combustion chamber is stabilized at the ignition temperature, the combustion is more stable, so that an additional combustion-supporting device is not needed during the combustion of the secondary combustion chamber, and meanwhile, the secondary combustion chamber is convenient for dust cleaning and is not easy to block a flue.
Description
Technical Field
The invention relates to the technical field, in particular to a secondary combustion chamber for household garbage flue gas.
Background
The secondary combustion chamber is a device for decomposing harmful gas and burning tar at high temperature in the field of incineration and pyrolysis of garbage and sludge, fully decomposes harmful components in incineration and pyrolysis smoke, particularly dioxin harmful substances, through the control of high temperature and residence time, the secondary combustion is an indispensable condition, most working conditions of the secondary combustion of the smoke at present need to add a combustion-supporting device, or the residence time is insufficient, and the secondary combustion technology has a part to be improved and optimized.
In the prior art, when combustible attachments such as carbon monoxide, carbon black, dust, tar and the like which are not completely combusted in a first combustion chamber enter a second combustion chamber, secondary combustion can occur when the temperature of flue gas rises to a certain value and enough oxygen is available for supporting combustion, waste gas generated after general household garbage is combusted enters the second combustion chamber, is completely combusted under the forced combustion of a combustor, enters a rear-end heat exchanger and a bag type dust remover again, and is discharged into the atmosphere through a chimney after dust removal. Combustible attachments and smoke temperature reach ignition temperature, and surplus oxygen are three essential conditions for combustion in the secondary combustion chamber. In the prior art, most secondary combustion chambers are limited by instability of flue gas temperature, and a combustion-supporting device is required to be arranged, so that the operation cost is greatly increased.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a secondary combustion chamber for household garbage flue gas.
In order to achieve the purpose, the invention adopts the following technical scheme:
a secondary combustion chamber for household garbage flue gas comprises a heat-insulating sealing cover flange, a preheating conical cover, a heat-insulating sealing cover, a fireproof heat-insulating material, a secondary combustion chamber cavity, an outer shell, a furnace door, furnace legs, an air intake grate, a dust remover, a slag remover, a suppressed flue and a porous high-temperature heat accumulator, wherein the furnace legs are fixedly arranged at the bottom of the outer shell, the lower ends of the furnace legs are respectively and fixedly connected with embedded connecting plates, the fireproof heat-insulating material is arranged on the top side of the outer shell, the furnace door is arranged on one side of the bottom of the outer shell, the secondary combustion chamber cavity is arranged on the inner side of the outer shell, a flue gas outlet of the secondary combustion chamber cavity is of a Venturi throat structure, the air intake grate is arranged at the surrounding center of the secondary combustion chamber cavity, the air intake grate adopts a rotary mountain-shaped structure, the cross section of the air intake grate is a square cavity, and the air inlet grate mount of degree is established in the top side of ash basin chassis, and the grate top has reverse group material device, and the ash remover sets up in the bottom of ash basin chassis, and the bottom and the slagging-off machine of ash remover are connected, preheat the conical cover surface and pour by refractory material and form, the internal surface is the steel plain noodles, and the heat preservation sealed cowling is the toper structure, arranges in preheating the conical cover top, and the heat preservation sealed cowling flange sets up the top at the heat preservation sealed cowling, the flue of holding back sets up at the top of combustion chamber cavity, and second combustion chamber cavity upper portion is equipped with the flue gas import, and the flue gas import is the degree partition and arranges in holding back the flue bottom.
Preferably, the bottom of the hold-down flue adopts a flow-blocking air hole flange, and the porous high-temperature heat accumulator is placed on the flange.
Preferably, the preheating conical cover is of a conical structure, six oxygen supplementing openings are uniformly formed in the periphery of the conical cover, and oxygen is provided for secondary combustion.
Preferably, the flue gas inlet of the secondary combustion chamber cavity is provided with a guide plate and an ash blocking disc, and the flue gas enters the secondary combustion chamber cavity in a rotating mode through the rotating blocking flue.
Preferably, the slag remover adopts a water seal structure, and the slag remover adopts wet-method slag removal and lower-return chain type slag removal.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the flue, the conical heat accumulator device, the flue gas flow-blocking flange and the preheating conical cover are arranged in the secondary combustion chamber, so that the temperature of the flue gas entering the secondary combustion chamber is stable at the ignition temperature, and the combustion is more stable;
2. according to the invention, through the application of the conical heat accumulator material in the secondary combustion chamber, the special structure of the flue is suppressed, so that an additional combustion-supporting device is not required to be added during combustion in the secondary combustion chamber;
3. the secondary combustion chamber is of a spiral rotating structure, dust in smoke is accumulated at the lower outlet in a concentrated mode, dust is convenient to clean, and a flue is not easy to block.
Drawings
FIG. 1 is a schematic sectional view of a secondary combustion chamber for domestic garbage flue gas according to the present invention;
FIG. 2 is a schematic view of the overall structure of a secondary combustion chamber cavity of a secondary combustion chamber for domestic garbage flue gas, which is provided by the invention;
FIG. 3 is a schematic structural diagram of a smoke-retaining duct of a secondary combustion chamber for domestic garbage flue gas, which is provided by the invention;
fig. 4 is a schematic structural view of a 360-degree air inlet grate of a secondary combustion chamber for domestic garbage flue gas provided by the invention.
In the figure: the device comprises a heat-insulation sealing cover flange 1, a preheating conical cover 2, a heat-insulation sealing cover 3, a refractory heat-insulation material 4, a secondary chamber cavity 5, an external shell 6, a furnace door 7, furnace legs 8, a pre-embedded connecting plate 9, a 360-degree air inlet furnace grate 10, an ash remover 11, a slag remover 12, a suppressed flue 13, a porous high-temperature heat accumulator 14, an ash basin chassis 15 and a reverse stirring device 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-4, a secondary combustion chamber of domestic waste flue gas, including heat preservation sealed cowling flange 1, preheat conical shroud 2, heat preservation sealed cowling 3, fire-resistant insulation material 4, two combustion chamber cavity 5, outside casing 6, furnace gate 7, stove leg 8, pre-buried connecting plate 9, 360 degrees air inlet grate 10, ash remover 11, slagging-off machine 12, hold back flue 13, porous high temperature heat accumulator 14, heat preservation sealed cowling flange 1 uses bolted connection, and sealed pad uses the cotton material of heat preservation aluminium silicate, can guarantee better leakproofness when heat preservation fire resistance. The preheating conical cover 2 is made of special high-temperature-resistant steel, the outer surface of the preheating conical cover is made of refractory material through pouring, and the inner surface of the preheating conical cover is a smooth steel surface. The heat preservation sealing cover 3 is of a conical structure and is arranged above the preheating conical cover. The refractory heat-insulating material 4 is made of high-temperature-resistant and corrosion-resistant high-aluminum material. The cavity 5 of the secondary combustion chamber is made of special high-temperature-resistant steel materials and has a 360-degree spiral structure, the cross section of the cavity is a square cavity, and the deformation amount is small under the high-temperature condition. 360 degree air inlet grate 10 adopts rotatory chevron structure, and the air-out layer upon layer has guaranteed 360 degrees air inlet grate 10's the difficult too high temperature when guaranteeing furnace air-out homogeneity, and slagging-off machine 12 adopts the water seal structure, and the wet process is slagging tap and has been reduced the temperature of slagging tap and guaranteed the condition that tiny dust can not appear kicking up. The whole of the suppressed flue 13 is made of special high-temperature resistant steel, the bottom of the suppressed flue is provided with a flow-resisting air hole flange, and a porous high-temperature heat accumulator 14 is arranged on the flange, so that the flue gas entering the secondary combustion chamber is ensured to continuously and stably reach the ignition temperature.
The flue gas firstly enters a suppressed flue 13 at the top of a cavity 5 of the secondary combustion chamber, oxygen entering through an oxygen supplementing port of the suppressed flue 13 rapidly spontaneously combusts after entering the cavity 5 of the secondary combustion chamber through high-temperature heat exchange of a porous high-temperature heat accumulator 14 inside the suppressed flue 13, the flue gas after high-temperature combustion is discharged out of the secondary combustion chamber in a rotary cavity of the secondary combustion chamber under the negative pressure action of a rear end draught fan, secondary combustion of the flue gas is completed, and harmful gases in the flue gas are decomposed.
The invention ensures that the temperature of the flue gas entering the secondary combustion chamber is stabilized at the ignition temperature, the combustion is more stable, so that an additional combustion-supporting device is not needed during the combustion of the secondary combustion chamber, and meanwhile, the secondary combustion chamber is convenient for dust cleaning and is not easy to block a flue.
It should be understood that the present invention is not limited to the above-described embodiments, but the technical solutions and the inventive concepts of the present invention may be equally replaced or modified by other embodiments within the technical scope of the present invention.
Claims (5)
1. A secondary combustion chamber for household garbage flue gas comprises a heat-insulating sealing cover flange (1), a preheating conical cover (2), a heat-insulating sealing cover (3), a fireproof heat-insulating material (4), a secondary combustion chamber cavity (5), an external shell (6), a furnace door (7), furnace legs (8), a 360-degree air inlet grate (10), an ash remover (11), a slag remover (12), a suppressed flue (13) and a porous high-temperature heat accumulator (14), and is characterized in that the furnace legs (8) are fixedly arranged at the bottom of the external shell (6), the lower ends of the furnace legs (8) are respectively and fixedly connected with a pre-embedded connecting plate (9), the fireproof heat-insulating material (4) is arranged at the top side of the external shell (6), the furnace door (7) is arranged at one side of the bottom of the external shell (6), the secondary combustion chamber cavity (5) is arranged at the inner side of the external shell (6), and a flue gas outlet of the secondary combustion chamber cavity (5) is of a, the 360-degree air inlet grate (10) is arranged at the surrounding center of the cavity of the secondary combustion chamber (5), the 360-degree air inlet grate (10) adopts a rotary mountain-shaped structure, the cross section of the 360-degree air inlet grate is a square cavity, an ash basin chassis (15) is arranged at the bottom of the inner side of the bottom of the outer shell (6), a fixing frame of the 360-degree air inlet grate (10) is arranged at the top side of the ash basin chassis (15), a reverse stirring device (16) is arranged at the top of the grate, an ash remover (11) is arranged at the bottom of the ash basin chassis (15), the bottom of the ash remover (11) is connected with a slag remover (12), the outer surface of the preheating conical cover (2) is poured by refractory materials, the inner surface is a steel smooth surface, the heat preservation sealing cover (3) is of a conical structure and is arranged above the preheating conical cover (2), a heat preservation sealing cover flange (1) is arranged at the top end of the heat preservation sealing cover (3), and the suppressed flue (13) is, the upper part of the secondary combustion chamber cavity (5) is provided with a flue gas inlet which is arranged at the bottom of the hold-back flue (13) in 360-degree equal distribution.
2. The secondary combustion chamber for the flue gas of the household garbage according to claim 1, characterized in that: the bottom of the hold-back flue (13) adopts a flow-resisting air hole flange, and a porous high-temperature heat accumulator (14) is placed on the flange.
3. The secondary combustion chamber for the flue gas of the household garbage according to claim 1, characterized in that: the preheating conical cover (2) is of a conical structure, six oxygen supplementing openings are uniformly formed in the periphery of the conical cover, and oxygen is provided for secondary combustion.
4. The secondary combustion chamber for the flue gas of the household garbage according to claim 1, characterized in that: a guide plate and an ash blocking disc are arranged at a smoke inlet of the secondary combustion chamber cavity (5), and smoke rotates to enter the secondary combustion chamber cavity through the rotating holding flue (13).
5. The secondary combustion chamber for the flue gas of the household garbage according to claim 1, characterized in that: the slag remover (12) adopts a water seal structure, the slag remover (12) adopts a wet method to remove slag, and a lower return chain type removes slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050216.8A CN110805910A (en) | 2019-10-31 | 2019-10-31 | Secondary combustion chamber for household garbage flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050216.8A CN110805910A (en) | 2019-10-31 | 2019-10-31 | Secondary combustion chamber for household garbage flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110805910A true CN110805910A (en) | 2020-02-18 |
Family
ID=69489732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911050216.8A Pending CN110805910A (en) | 2019-10-31 | 2019-10-31 | Secondary combustion chamber for household garbage flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110805910A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133768Y (en) * | 1991-12-01 | 1993-05-19 | 江西省农机研究所 | Directly heating hot-blast stove |
| CN2477960Y (en) * | 2001-04-24 | 2002-02-20 | 温简金 | Double rotary high temp garbage incinerator |
| KR20130002127U (en) * | 2011-09-27 | 2013-04-04 | 이재성 | 2 furnace secon combust system |
| CN103604128A (en) * | 2012-02-29 | 2014-02-26 | 中北大学 | Method for utilizing waste heat of low-concentration combustible materials in tail gas of Slapple furnace |
| CN203757727U (en) * | 2014-04-14 | 2014-08-06 | 浙江华川实业集团有限公司 | Garbage incinerator for paper mill |
| CN209558348U (en) * | 2018-12-17 | 2019-10-29 | 何涵跃 | A kind of large size pyrolytic gasification rotary incinerator |
| CN211176825U (en) * | 2019-10-31 | 2020-08-04 | 安徽中泰创展环境科技股份有限公司 | Secondary combustion chamber for household garbage flue gas |
-
2019
- 2019-10-31 CN CN201911050216.8A patent/CN110805910A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2133768Y (en) * | 1991-12-01 | 1993-05-19 | 江西省农机研究所 | Directly heating hot-blast stove |
| CN2477960Y (en) * | 2001-04-24 | 2002-02-20 | 温简金 | Double rotary high temp garbage incinerator |
| KR20130002127U (en) * | 2011-09-27 | 2013-04-04 | 이재성 | 2 furnace secon combust system |
| CN103604128A (en) * | 2012-02-29 | 2014-02-26 | 中北大学 | Method for utilizing waste heat of low-concentration combustible materials in tail gas of Slapple furnace |
| CN203757727U (en) * | 2014-04-14 | 2014-08-06 | 浙江华川实业集团有限公司 | Garbage incinerator for paper mill |
| CN209558348U (en) * | 2018-12-17 | 2019-10-29 | 何涵跃 | A kind of large size pyrolytic gasification rotary incinerator |
| CN211176825U (en) * | 2019-10-31 | 2020-08-04 | 安徽中泰创展环境科技股份有限公司 | Secondary combustion chamber for household garbage flue gas |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |