CN214619559U - Heat accumulation burning garbage pyrolysis gasification device - Google Patents
Heat accumulation burning garbage pyrolysis gasification device Download PDFInfo
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- CN214619559U CN214619559U CN202120149134.5U CN202120149134U CN214619559U CN 214619559 U CN214619559 U CN 214619559U CN 202120149134 U CN202120149134 U CN 202120149134U CN 214619559 U CN214619559 U CN 214619559U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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Abstract
The utility model provides a heat accumulation burning rubbish pyrolysis gasification equipment, includes consecutive pyrolysis gasifier, postcombustion chamber and gas cleaning device in order, still is equipped with the heat accumulator in the postcombustion chamber, and the heat accumulator is piled up the formation by the interval stacking by the resistant firebrick of polylith, and the clearance between the resistant firebrick of polylith forms the burning pore of many zigzag shapes to make the synthetic gas get into gas cleaning device through flue gas duct rethread gas duct behind the sufficient burning of burning pore. The utility model discloses the use of combustion-supporting supplementary fuel of using in the reducible afterburner mainly solves the pyrolysis gasifier on the existing market secondary combustion chamber temperature unstability, causes the burning insufficient, the dioxin detoxifies not thorough etc to reduce the refuse treatment cost, reduce the emission of pollutant.
Description
Technical Field
The utility model relates to a domestic waste incineration equipment field, specific heat accumulation burning rubbish pyrolysis gasification equipment that says so.
Background
The domestic garbage treatment is a problem which can not be avoided in the current urbanization process, various garbage treatment modes emerge endlessly, and the current main treatment mode is landfill and incineration power generation. The landfill mode occupies a large amount of land in China, and has long post maintenance period, high cost and even secondary pollution, so the landfill mode is listed as a limiting mode. Incineration power generation has the advantages of large treatment capacity, waste heat utilization power generation and the like, and becomes a mainstream mode for treating domestic garbage in large and medium-sized cities. However, for small counties, towns and remote mountainous areas, the advantages of incineration power generation cannot be revealed due to dispersed living, long transportation distance and high transportation cost.
The waste pyrolysis gasification disposal mode is a supplement of a waste incineration power generation disposal mode, has the advantages of small occupied area, investment saving, simple equipment operation, less pollutant generation and the like, and is concerned and favored. In other related patents such as a domestic garbage pyrolysis gasification oxygen-enriched secondary combustion low-pollution discharge system disclosed in CN201820326425.5, a garbage pyrolysis gasification combustion furnace disclosed in CN201720755173.3, and a pyrolysis gasification system for industrial garbage and sludge disclosed in CN202010382469.1, a pyrolysis gasification furnace and a secondary combustion furnace are commonly used in cooperation. The garbage is decomposed into synthesis gas consisting of methane, hydrogen, carbon monoxide, carbon dioxide, volatile organic compounds and the like through a pyrolysis gasification furnace, the synthesis gas is introduced into a secondary combustion chamber for further combustion and decomposition, and tail gas is discharged after being treated by a flue gas purification device to reach the standard. Because the scale of rural area construction is small, generally 2-30 tons/day, and the heat value of the garbage is low, the moisture content is high, so that the combustible gas in the synthesis gas generated in the pyrolysis gasification process is difficult to maintain the normal combustion of the secondary combustion chamber, or the yield of the synthesis gas is continuously changed, so that the temperature in the secondary combustion chamber is reduced to below 850 ℃, and a large amount of dioxin is generated. In view of the problem, a large amount of supplementary fuel is generally needed for combustion supporting, otherwise, a large amount of dioxin is generated to be discharged, so that the garbage treatment cost is obviously increased, and the purpose of preventing and treating pollution is not achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a heat accumulation burning rubbish pyrolysis gasification equipment reduces the use of combustion-supporting supplementary fuel of using in the postcombustion chamber, maintains the high temperature state in the postcombustion chamber and fully decomposes dioxin to reduce the refuse treatment cost, reduce pollutant's emission.
In order to solve the technical problem, the utility model discloses a concrete scheme does: a thermal storage combustion garbage pyrolysis gasification device comprises a pyrolysis gasification furnace, a secondary combustion chamber and a flue gas purification device which are sequentially connected, wherein the pyrolysis gasification furnace is used for combusting garbage to generate synthesis gas, the secondary combustion chamber is used for combusting and decomposing the synthesis gas, the flue gas purification device is used for purifying combustion tail gas of the synthesis gas in the secondary combustion chamber,
the bottom of the secondary combustion chamber is provided with a flue gas pipeline connected with a flue gas purification device, the top of the secondary combustion chamber is provided with a main burner and an auxiliary burner, the main burner is a cyclone burner provided with an inner cone cyclone and an outer cone cyclone, the inner cone cyclone is connected with the top of the pyrolysis gasifier by an updraft type air duct, the outer cone cyclone is connected with a secondary combustion-supporting air pipeline, the auxiliary burner is a gun type burner and is inserted in the middle of the main burner, and the auxiliary burner is respectively connected with a combustion oil pipeline and the secondary combustion-supporting air pipeline;
still be equipped with the heat accumulator in the secondary combustion chamber, the heat accumulator is piled up through the interval pile up by the resistant firebrick of polylith and forms, and the clearance between the resistant firebrick of polylith forms the burning pore of many zigzag to make the synthetic gas get into gas cleaning device through flue gas pipeline behind the sufficient burning of burning pore.
Preferably, the refractory bricks are of a solid structure, the refractory bricks on the same layer are stacked towards the same direction, and the refractory bricks on the two adjacent layers are vertically distributed in the arrangement direction.
Preferably, the refractory bricks are of hollow structures, hollow cavities of all the refractory bricks are distributed along the vertical direction, hollow cavities of two adjacent layers of refractory bricks are distributed in a staggered mode, and a refractory cushion block is arranged between the two adjacent layers of refractory bricks.
Preferably, the refractory bricks are made of silicon carbide.
Preferably, the pyrolysis gasification furnace is provided with a primary air supply induced draft fan for supplying primary combustion-supporting air to the pyrolysis gasification furnace, an air suction port of the primary air supply induced draft fan is positioned in the garbage storage pit, and an air exhaust pipeline of the primary air supply induced draft fan penetrates through the rotary grate at the bottom of the pyrolysis gasification furnace and is distributed.
Preferably, the top of pyrolysis gasifier is equipped with electric putter's feed mechanism, is equipped with the pivot by motor drive in the pyrolysis gasifier, and vertical direction distribution is followed in the pivot, and the position that corresponds feed mechanism in the pivot is equipped with and is used for evenly throwing the rubbish that feed mechanism carried to the throwing paddle in the pyrolysis gasifier, lies in the below of throwing the paddle in the pivot and is equipped with the flat paddle of dialling that is used for dialling the rubbish that piles up in the pyrolysis gasifier.
Owing to adopted above technical scheme, the beneficial effects of the utility model are that:
the utility model provides a heat accumulator has in the postcombustion chamber, the heat accumulator is piled up the formation by the interval stacking by the resistant firebrick of polylith, and the clearance between the resistant firebrick of polylith forms the burning pore of many zigzag shapes. After the heat accumulator is heated by the auxiliary burner, the synthesis gas in the pyrolysis gasification furnace is mixed with secondary combustion-supporting air by the main burner and is sprayed into the secondary combustion chamber to be rapidly combusted, and the heat accumulator continuously absorbs heat to be heated. Because the heat accumulator has higher heat conduction and heat radiation capability, the yield of the synthesis gas in the pyrolysis gasifier fluctuates, and when only a small amount of synthesis gas is combusted in the secondary combustion chamber, the high-temperature state above 850 ℃ in the secondary combustion chamber can still be maintained through continuous heat release of the heat accumulator, so that the technical problem that the dioxin is not thoroughly detoxified due to rapid cooling in the secondary combustion chamber caused by low yield of the synthesis gas or component change is solved. Meanwhile, the utility model discloses through heat accumulator self rather than the high temperature state that supplementary combustor maintained the postcombustion chamber under the fluctuating state of synthetic gas output, make the utility model discloses compare greatly reduced to supplementary fuel's use amount with prior art, alleviateed msw incineration's treatment cost.
The utility model discloses well heat accumulator's many burning pore arranges and makes the synthetic gas before through flue gas pipeline discharge postcombustion chamber, forces the synthetic gas to flow with tortuous winding path along the burning pore in the postcombustion chamber. Compared with the cavity type secondary combustion chamber in the prior art, the secondary combustion chamber has the advantages that the space in the secondary combustion chamber can be fully utilized, the residence time of the synthesis gas in the secondary combustion chamber is prolonged, the combustion time is prolonged, the combustion is sufficient, and the thorough decomposition of dioxin is facilitated.
The utility model discloses the many burning pore of well heat accumulator arranges and still makes the synthetic gas produce violent gas disturbance because of colliding resistant firebrick in-process of the tortuous winding burning pore of circulation, has reinforceed the mixture of synthetic gas and the combustion-supporting wind of secondary, further makes the burning abundant.
The utility model discloses the many burning pore of well heat accumulator still makes the dust that the synthetic gas carried collide resistant firebrick in the flow and produce and subside the effect, makes the heat accumulator possess certain dust collecting capacity to reduce low reaches equipment wearing and tearing and dust removal load.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a heat accumulator portion in example 1 of the present invention;
FIG. 3 is a schematic structural view of a heat accumulator portion in example 2 of the present invention;
the labels in the figure are: 1. the device comprises a feeding mechanism, 2, a leveling blade, 3, a rotating shaft, 4, a throwing blade, 5, a pyrolysis gasification furnace, 6, an updraft type air guide pipe, 7, an auxiliary burner, 8, a main burner, 9, a secondary combustion chamber, 10, a flue gas purification device, 11, a flue gas pipeline, 12, a combustion pore channel, 13, refractory bricks, 14, a heat accumulator, 15, an exhaust pipeline, 16, a rotary grate, 17, a primary air supply induced draft fan, 18, a hollow cavity, 19 and a refractory cushion block.
Detailed Description
The invention is further illustrated below by means of two examples:
example 1
As shown in fig. 1, the utility model discloses a thermal storage combustion garbage pyrolysis gasification device, which comprises a pyrolysis gasification furnace 5, a secondary combustion chamber 9 and a flue gas purification device 10 which are connected in sequence from left to right. The pyrolysis gasification furnace 5 is used for burning garbage to generate synthesis gas, the secondary combustion chamber 9 is used for burning and decomposing the synthesis gas, and the flue gas purification device 10 is used for purifying and treating the combustion tail gas of the synthesis gas in the secondary combustion chamber 9.
An electric push rod type feeding mechanism 1 is arranged at the top of the pyrolysis gasification furnace 5, garbage is thrown into the pyrolysis gasification furnace 5 through the feeding mechanism 1 after being crushed, and is dried, pyrolyzed, gasified, combusted and burned out in sequence, final ash is discharged through a rotary grate 16 arranged at the bottom of the pyrolysis gasification furnace 5 after being cooled, and generated synthetic gas is introduced into a secondary combustion chamber 9 through an updraft type gas guide pipe 6 for further combustion and decomposition. The top of the pyrolysis gasifier 5 is provided with a material distribution device, and the garbage material layer is uniformly distributed through the material distribution device. The distributing device comprises a rotating shaft 3 which is vertically distributed and a motor (not shown in the figure) which is used for driving the rotating shaft 3 to rotate, a throwing paddle 4 which is used for uniformly throwing the garbage conveyed by the feeding mechanism 1 into the pyrolysis gasifier 5 is arranged at the position, corresponding to the feeding mechanism 1, of the rotating shaft 3, and a leveling paddle 2 which is used for leveling the stacked garbage in the pyrolysis gasifier 5 is arranged below the throwing paddle 4 on the rotating shaft 3. The pyrolysis gasification furnace 5 is provided with a sequential air supply induced draft fan 17 for supplying primary combustion-supporting air to the pyrolysis gasification furnace 5, an air suction port of the sequential air supply induced draft fan 17 is positioned in the garbage storage pit, and an air exhaust pipeline 15 of the sequential air supply induced draft fan 17 penetrates through the rotary grate 16 to be distributed. The odor-containing gas is fed into the pyrolysis gasifier 5 through the air-supply induced draft fan 17 in sequence, has the functions of deodorization and air supply, and simultaneously cools the slag layer and improves the air supply temperature, thereby being beneficial to the combustion supporting function in the pyrolysis gasifier 5. The parts which are not described in the pyrolysis gasifier 5 are all the conventional technologies, and the flue gas treatment device is also the conventional technology in solid waste incineration treatment equipment, mainly comprises dedusting and deacidification equipment, and is not described in detail in the specification.
The bottom of the secondary combustion chamber 9 in this embodiment is connected with a flue gas purification device 10 through a flue gas pipeline 11, and the top is provided with a main burner 8 and an auxiliary burner 7 for controlling combustion in the secondary combustion chamber 9. The main burners 8 are of conventional form swirl burners having an inner cone swirler and an outer cone swirler. The inner cone swirler of the cyclone burner is connected with the top of the pyrolysis gasifier 5 through an updraft type gas guide pipe 6, and the outer cone swirler is connected with a secondary combustion-supporting air pipeline. The secondary combustion-supporting air in the outer cone swirler is in rotating airflow through the guide vanes which are evenly distributed in the tangential direction, has stronger entrainment effect, can ensure that the secondary combustion-supporting air is strongly mixed with the synthesis gas, and is beneficial to full combustion. The auxiliary burner 7 is a gun type burner and is inserted in the middle of the main burner 8, and the auxiliary burner 7 is respectively connected with the combustion oil pipeline and the secondary combustion air pipeline to play roles of ignition and stable combustion.
And a heat accumulator 14 is arranged below the main burner 8 and the auxiliary burner 7 in the secondary combustion chamber 9. The heat accumulator 14 is formed by stacking a plurality of refractory bricks 13 at intervals, the refractory bricks 13 are made of silicon carbide, and a plurality of zigzag combustion channels 12 are formed in gaps among the refractory bricks 13, so that the synthesis gas is fully combusted in the combustion channels 12 and then enters the flue gas purification device 10 through the flue gas pipeline 11. The firebricks 13 in this embodiment are solid structures, and as shown in fig. 2, the stacking and stacking manner of the firebricks 13 is: the refractory bricks 13 in the same layer are stacked towards the same direction, and the refractory bricks 13 in two adjacent layers are vertically distributed in the arrangement direction. The combustion channels 12 are formed by stacking gaps between adjacent refractory bricks 13.
In the garbage incineration treatment process, the auxiliary burner 7 is used for starting and igniting for the first time and heating the heat accumulator 14 to the set temperature, and then the synthesis gas can be introduced to realize continuous and stable combustion. After the synthesis gas enters the secondary combustion chamber 9, the radiant heat and the convection heat of the entrainment heat accumulator 14 are quickly ignited, then are mixed with secondary air, rotate downwards, and realize multi-return-stroke and multi-space combustion through the porous heat accumulator 14. When the temperature of the secondary combustion chamber 9 exceeds a set value, the air quantity of a primary air supply induced draft fan is reduced through a frequency conversion device, and the generation quantity of synthesis gas is reduced; simultaneously, the air quantity of secondary combustion-supporting air is increased, and the high-temperature state of the secondary combustion chamber 9 is reduced; when the temperature of the second combustion chamber 9 is reduced, the adjustment method is opposite. When the output limit of the synthesis gas fluctuates and the temperature in the secondary combustion chamber 9 cannot be maintained through heat release of the heat accumulator 14, the auxiliary burner 7 is started again to maintain the temperature of the secondary combustion chamber 9, so that the synthesis gas is ensured to be stably and fully combusted, and thorough detoxification of dioxin is ensured.
Example 2
The main structure of this embodiment is the same as that of embodiment 1, except that the firebricks 13 in this embodiment are hollow, as shown in fig. 3, the hollow cavities 18 of all the firebricks 13 are distributed in the vertical direction, the hollow cavities 18 of two adjacent firebricks 13 are distributed alternately, and a refractory block 19 is provided between two adjacent firebricks 13, and the refractory block 19 is made of the same material as that of the firebricks 13. The combustion duct 12 is formed by a hollow cavity 18 of the refractory bricks 13, stacking intervals between the refractory bricks 13 in the same layer, and gaps isolated by refractory blocks 19 between the adjacent refractory bricks 13 on two sides. Through this kind of putting of hollow firebrick 13 and piling up the form, further improved the burning pore 12 quantity and the tortuosity in the unit volume, further prolonged the combustion time of synthetic gas, reached more excellent decomposition dioxin and dust fall effect.
Claims (6)
1. The utility model provides a heat accumulation burning rubbish pyrolysis gasification equipment, includes pyrolysis gasifier (5), postcombustion room (9) and flue gas purification device (10) that link to each other in order, and pyrolysis gasifier (5) are used for burning rubbish in order to produce the synthetic gas, and postcombustion room (9) are used for burning the synthetic gas and decompose, and flue gas purification device (10) are arranged in the burning tail gas of synthetic gas in purification treatment postcombustion room (9), its characterized in that:
a flue gas pipeline (11) connected with a flue gas purification device (10) is arranged at the bottom of the secondary combustion chamber (9), a main burner (8) and an auxiliary burner (7) are arranged at the top of the secondary combustion chamber (9), the main burner (8) is a cyclone burner with an inner cone cyclone and an outer cone cyclone, the inner cone cyclone is connected with the top of the pyrolysis gasifier (5) through an updraft air duct (6), the outer cone cyclone is connected with a secondary combustion-supporting air pipeline, the auxiliary burner (7) is a gun-type burner and is inserted in the middle of the main burner (8), and the auxiliary burner (7) is respectively connected with a combustion oil pipeline and the secondary combustion-supporting air pipeline;
still be equipped with heat accumulator (14) in secondary combustion chamber (9), heat accumulator (14) are piled up through the interval by polylith resistant firebrick (13) and are formed, and the clearance between polylith resistant firebrick (13) forms many zigzag's combustion pore (12) to make the synthetic gas get into flue gas purification device (10) through flue gas pipeline (11) rethread flue gas duct (11) after fully burning through combustion pore (12).
2. The thermal storage combustion garbage pyrolysis gasification device according to claim 1, characterized in that: the refractory bricks (13) are of solid structures, the refractory bricks (13) on the same layer are stacked towards the same direction, and the arrangement directions of the two adjacent layers of refractory bricks (13) are vertically distributed.
3. The thermal storage combustion garbage pyrolysis gasification device according to claim 1, characterized in that: the fireproof bricks (13) are of hollow structures, hollow cavities (18) of all the fireproof bricks (13) are distributed along the vertical direction, the hollow cavities (18) of two adjacent layers of the fireproof bricks (13) are distributed in a staggered mode, and a fireproof cushion block (19) is arranged between the two adjacent layers of the fireproof bricks (13).
4. The thermal storage combustion garbage pyrolysis gasification apparatus according to any one of claims 2 or 3, characterized in that: the refractory bricks (13) are made of silicon carbide.
5. The thermal storage combustion garbage pyrolysis gasification device according to claim 1, characterized in that: the pyrolysis gasification furnace (5) is provided with a primary air supply induced draft fan (17) for supplying primary combustion-supporting air to the pyrolysis gasification furnace (5), an air suction port of the primary air supply induced draft fan (17) is positioned in the garbage storage pit, and an exhaust pipeline (15) of the primary air supply induced draft fan (17) penetrates through a rotary grate (16) positioned at the bottom of the pyrolysis gasification furnace (5) and is distributed.
6. The thermal storage combustion garbage pyrolysis gasification device according to claim 1, characterized in that: the top of pyrolysis gasifier (5) is equipped with feed mechanism (1) of electric putter formula, be equipped with in pyrolysis gasifier (5) by motor drive's pivot (3), vertical direction distribution is followed in pivot (3), the position that corresponds feed mechanism (1) on pivot (3) is equipped with and is used for throwing the rubbish that feed mechanism (1) was carried evenly to throwing paddle (4) in pyrolysis gasifier (5), it is equipped with below of throwing paddle (4) to be located in pivot (3) and is used for stirring flat paddle (2) of piling up rubbish in pyrolysis gasifier (5).
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| CN202120149134.5U CN214619559U (en) | 2021-01-20 | 2021-01-20 | Heat accumulation burning garbage pyrolysis gasification device |
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| CN202120149134.5U CN214619559U (en) | 2021-01-20 | 2021-01-20 | Heat accumulation burning garbage pyrolysis gasification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930436A (en) * | 2022-12-16 | 2023-04-07 | 湘潭大学 | Oil-gas dual-purpose double-layer hot blast stove and operation method |
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2021
- 2021-01-20 CN CN202120149134.5U patent/CN214619559U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930436A (en) * | 2022-12-16 | 2023-04-07 | 湘潭大学 | Oil-gas dual-purpose double-layer hot blast stove and operation method |
| CN115930436B (en) * | 2022-12-16 | 2024-04-12 | 湘潭大学 | Dual-purpose double-layer type hot blast stove for oil and gas and operation method |
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Address after: 471800 No.6 shuangxiang Road, Luoxin industrial cluster, Xin'an County, Luoyang City, Henan Province Patentee after: Luoyang Zhongke Environmental Protection Engineering Technology Co.,Ltd. Address before: 471800 No.6 shuangxiang Road, Luoxin industrial cluster, Xin'an County, Luoyang City, Henan Province Patentee before: Luoyang Yalian Environmental Technology Co.,Ltd. |
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