CN211119357U - Household garbage incineration equipment - Google Patents
Household garbage incineration equipment Download PDFInfo
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- CN211119357U CN211119357U CN201921200054.7U CN201921200054U CN211119357U CN 211119357 U CN211119357 U CN 211119357U CN 201921200054 U CN201921200054 U CN 201921200054U CN 211119357 U CN211119357 U CN 211119357U
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Abstract
The utility model provides a domestic waste incineration equipment, domestic waste incineration equipment including burn burning furnace and with burn the flue gas purification device that burning furnace is connected, the entry and the flue gas purification device exit linkage of recirculation flue gas pipeline, the export of recirculation flue gas pipeline extends to the larynx mouth that burns burning furnace, the recirculation flue gas lets in burning furnace as the overgrate air, the tie point that burns out the air pipe way and burning furnace is located the top of the tie point of recirculation flue gas pipeline and burning furnace, the burn out air pipe way is used for carrying the air to burning furnace. The utility model provides a hybrid flue gas recirculation technology for mixed flow type waste incinerator has solved that the disturbance is not enough in the current flue gas recirculation technology stove, the interior oxygen content fluctuation of stove is big and lead to CO to discharge and exceeds standard, and the recirculated flue gas volume is too big and lead to the interior temperature decline range of incinerator big, can't satisfy the requirement of flue gas 850 ℃/2 seconds, various drawbacks that appear such as mixing cold air or hot-air.
Description
Technical Field
The utility model relates to a refuse treatment field, in particular to a domestic waste incineration equipment for refuse landfill and application method thereof.
Background
With the development of economy and the improvement of the living standard of residents, the quantity of domestic garbage generated by residents in daily life and production is gradually increased. According to statistics, the urban residents in China currently generate about 2.7 hundred million tons of domestic garbage every year and increase at a speed of 10 percent every year. According to the 'thirteen-five' plan, the incineration treatment capacity of the municipal domestic waste accounts for more than 50% of the total harmless treatment capacity, which is equivalent to that more than 360 seats of a 1000 t/d equivalent domestic waste incineration power plant are newly built. However, the domestic waste incineration has the problems of high pollutant emission control cost, serious furnace coking and the like, and particularly under the background that the current environmental protection requirement is strict and an enterprise collects environmental protection taxes for emission, if the enterprise can reduce the emission of pollutants, the domestic waste incineration not only is beneficial to the market competitiveness of the enterprise, but also builds beautiful China with actual actions.
The smoke gas recirculation technology is one of low-nitrogen combustion technologies, and is mainly characterized by controlling O in an incinerator2Content, temperature level to achieve low nitrogen combustion. ExistingThe smoke recycling technology in the waste incineration project mostly adopts a scheme of replacing secondary air with recycled smoke by reducing O in an incinerator2And the content of the nitrogen oxide is controlled, so that the generation of NOx is inhibited, and the emission of NOx can be reduced. However, the working condition fluctuation of the garbage incineration is large, and O in the furnace2The content is sometimes lower than normal, resulting in an overproof of CO.
At present, the domestic flue gas recirculation technology for the garbage incinerator mostly adopts a single circulation mode. Mainly replaces secondary air with recycled flue gas to ensure that O in the furnace2The content is reduced, and in order to ensure the burnout of CO, the amount of the recycled flue gas must be increased to increase the disturbance in the furnace and burn out the combustible gas. However, the temperature in the furnace is reduced too much due to a large amount of recirculated flue gas, and the requirement of 850 ℃/2 seconds for the flue gas cannot be ensured, so that the performance of the flue gas recirculation effect is limited. Meanwhile, the recirculated flue gas belongs to low-oxygen flue gas, the volume fraction of the oxygen content is generally about 10%, and the requirement of the incinerator for rapidly supplementing oxygen cannot be met. The method of mixing the recycled flue gas with the fresh air can meet the requirement of rapidly supplementing oxygen for the incinerator. However, the mixed cold air can cause the temperature of the flue gas to be lower than the acid dew point, so that the flue gas is condensed, a fan and a pipeline are corroded, and the safety of the system is influenced. The mixed hot air can meet the requirement of rapidly supplementing oxygen for the incinerator and can prevent the temperature of the flue gas from being lower than the acid dew point, but additional heating equipment is needed for heating the air to be not lower than the temperature of the flue gas, and the investment and the operating cost are high.
Therefore, there is a need to provide a household garbage incineration device to at least partially solve the above problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a household garbage incineration device, which is characterized in that the household garbage incineration device comprises an incinerator and a smoke purification device connected with the incinerator,
wherein the household garbage incineration equipment comprises a recirculation flue gas pipeline, the inlet of the recirculation flue gas pipeline is connected with the outlet of the flue gas purification device, the outlet of the recirculation flue gas pipeline extends to the throat of the incinerator, the recirculation flue gas is introduced into the incinerator as secondary air,
the household garbage incineration equipment further comprises an over-fire air pipeline, wherein a connection point of the over-fire air pipeline and the incinerator is located above a connection point of the recirculating flue gas pipeline and the incinerator, and the over-fire air pipeline is used for conveying air into the incinerator.
In one example, the over-fire air pipeline comprises two pipelines, and the nozzles of the two pipelines are arranged oppositely.
In one example, the outlets of the recirculated flue gas duct are offset or level-wise arranged in the height direction of the incinerator.
In one example, the recirculated flue gas pipeline includes a main pipeline and at least two branch pipelines connected to the main pipeline, the main pipeline is connected to the flue gas purification device, and outlets of the at least two branch pipelines extend to a throat of the incinerator and are arranged in a staggered manner in a height direction of the incinerator.
In one example, the system further comprises a recirculation fan arranged on the main pipeline.
In one example, the flue gas purification device comprises a reaction tower and a bag-type dust collector which are connected with each other.
In one example, the incinerator is connected to the waste heat boiler, and the reaction tower is connected to the waste heat boiler.
In one example, the bag-type dust collector is connected with an induced draft fan through a pipeline, and the induced draft fan is connected with a chimney through a pipeline.
In one example, the main pipeline is connected with a pipeline between the induced draft fan and a chimney.
In one example, the incinerator comprises a mixed flow type domestic waste incinerator.
The utility model provides a novel household garbage incineration device, which comprises an incinerator and a flue gas purification device connected with the incinerator, wherein, domestic waste incineration equipment includes the recirculated flue gas pipeline, the one end (the entry) of recirculated flue gas pipeline is connected with flue gas purification device's one end (the export) of keeping away from burning furnace along flue gas flow direction, the other end (the export) of recirculated flue gas pipeline extends to and is close to burning furnace, the recirculated flue gas lets in burning furnace as the overgrate air, recirculated flue gas pipeline includes main line and two at least branch pipelines of being connected with the main line, the one end (the export) of burning furnace is burnt to being close to of two at least branch pipelines is staggered arrangement in the direction of height of burning furnace, domestic waste incineration equipment still includes the overfire air pipeline, the overfire air pipeline is located the top of recirculated flue gas pipeline, the air gets into burning furnace through the overfire air pipeline.
The utility model provides a hybrid flue gas recirculation technology for mixed flow type waste incinerator, can solve the interior disturbance of current flue gas recirculation technology stove not enough, the interior oxygen content fluctuation of stove is big and lead to CO to discharge and exceed standard, the recirculated flue gas volume is too big and lead to the interior temperature decline of incinerator range big, can't satisfy the requirement of flue gas 850 ℃/2 seconds, the mixing cold air and lead to the flue gas dewfall, corrode fan and pipeline, the mixing hot-air needs extra firing equipment and leads to investment and the problem that the working costs is all on the high side.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic structural view of a household garbage incineration device in an embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, specific method steps and/or structures are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Like reference numerals refer to like elements throughout.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
At present, the domestic flue gas recirculation technology for the garbage incinerator mostly adopts a single circulation mode. Mainly replaces secondary air with recycled flue gas to ensure that O in the furnace2The content is reduced, and in order to ensure the burnout of CO, the amount of the recycled flue gas must be increased to increase the disturbance in the furnace and burn out the combustible gas. However, the temperature in the furnace is reduced too much due to a large amount of recirculated flue gas, and the requirement of 850 ℃/2 seconds for the flue gas cannot be ensured, so that the performance of the flue gas recirculation effect is limited. Meanwhile, the recirculated flue gas belongs to low-oxygen flue gas, the volume fraction of the oxygen content is generally about 10%, and the requirement of the incinerator for rapidly supplementing oxygen cannot be met. The method of mixing the recycled flue gas with the fresh air can meet the requirement of rapidly supplementing oxygen for the incinerator. However, the mixed cold air can cause the temperature of the flue gas to be lower than the acid dew point, so that the flue gas is condensed, the fan and the pipeline are corroded, and the safety of the system is influencedAnd (4) sex. The mixed hot air can meet the requirement of rapidly supplementing oxygen for the incinerator and can prevent the temperature of the flue gas from being lower than the acid dew point, but additional heating equipment is needed for heating the air to be not lower than the temperature of the flue gas, and the investment and the operating cost are high.
The utility model provides a novel household garbage incineration device, which comprises an incinerator and a flue gas purification device connected with the incinerator, wherein the household garbage incineration device comprises a recirculation flue gas pipeline, one end of the recirculation flue gas pipeline (the inlet of the recirculation flue gas pipe) is connected with one end of the flue gas purification device (the outlet of the flue gas purification device) far away from the incinerator along the flue gas flowing direction, the other end of the recirculation flue gas pipeline (the outlet of the recirculation flue gas pipeline) extends to be close to the incinerator, the recirculation flue gas is introduced into the incinerator as secondary air, the recirculation flue gas pipeline comprises a main pipeline and at least two branch pipelines connected with the main pipeline, one ends of the at least two branch pipelines close to the incinerator (the outlets of the branch pipelines) are arranged in a staggered way in the height direction of the incinerator, the household garbage incineration device also comprises an over-fire air pipeline, the over-fire air pipeline is positioned above the recirculating flue gas pipeline, and air enters the incinerator through the over-fire air pipeline.
The utility model provides a hybrid flue gas recirculation technology for mixed flow type waste incinerator, can solve the interior disturbance of current flue gas recirculation technology stove not enough, the interior oxygen content fluctuation of stove is big and lead to CO to discharge and exceed standard, the recirculated flue gas volume is too big and lead to the interior temperature decline of incinerator range big, can't satisfy the requirement of flue gas 850 ℃/2 seconds, the mixing cold air and lead to the flue gas dewfall, corrode fan and pipeline, the mixing hot-air needs extra firing equipment and leads to investment and the problem that the working costs is all on the high side.
As shown in fig. 1, the embodiment of the present invention provides a household garbage incineration apparatus 100, the household garbage incineration apparatus 100 includes an incinerator 110 and a flue gas purification device 120 connected to the incinerator 110. The household garbage incineration apparatus 100 further comprises a recirculation flue gas pipeline 130, one end of the recirculation flue gas pipeline 130 (the inlet of the recirculation flue gas pipeline) and the flue gas purification device 120 are arranged along the flow direction of the flue gasIs connected to the end (outlet of the flue gas cleaning device) remote from the incinerator 110 and the other end (outlet of the flue gas cleaning device) of the recirculated flue gas pipe 130 extends to the vicinity of the incinerator 110. The recirculated flue gas is passed into the incinerator 110 as secondary air. The secondary air is completely replaced by the recycled flue gas, so that O in the incinerator is reduced2The content of the NOx is reduced, the generation of fuel type NOx is inhibited, and the denitration cost is reduced. The normal temperature air is replaced by high temperature recirculated flue gas, the jet velocity of the secondary air nozzle is increased, and the gaseous combustible and O2The chance of meeting is increased, the gas phase burnout rate is further improved, and the O at the position of the throat of the incinerator is increased under the strong blowing of the recirculated flue gas2More uniform distribution, reduce O2The local area is violently combusted due to uneven concentration distribution, so that the generation of thermal NOx is reduced, and the risk of high-temperature coking of the incinerator is reduced.
The recirculated flue gas conduit 130 includes a main conduit 131 and at least two branch conduits 132 connected to the main conduit 131, and one ends of the two branch conduits 132 (outlets of the branch conduits 132) extend to near the throat of the incinerator 110. In one example, one ends of the at least two branch pipes 132 close to the incinerator 110 (the outlets of the branch pipes 132) are arranged offset in the height direction of the incinerator 110 (i.e., the ascending direction of the flue gas in the incinerator as shown in fig. 1). The secondary air system which is arranged in a staggered manner by the upper layer and the lower layer can enhance the disturbance of a combustible gas combustion area, prolong the travel of combustible gas in the furnace, increase the retention time, improve the burn-out rate and realize a more flexible air distribution mode. In one example, one ends of the at least two branch pipes 132 close to the incinerator 110 (the outlets of the branch pipes 132) are arranged at the same height in the height direction of the incinerator 110 (i.e., the ascending direction of the flue gas in the incinerator as shown in fig. 1).
The household garbage incineration apparatus 100 further includes an overfire air duct 140, the overfire air duct 140 is located above the recirculated flue gas duct 130 (the connection point of the overfire air duct 140 and the incinerator 110 is located above the connection point of the recirculated flue gas duct 130 and the incinerator 110), and air enters the incinerator 110 through the overfire air duct 140. The requirement of rapidly supplementing oxygen in the incinerator can be realized by keeping the over-fire air as air, the problem of over-standard CO emission caused by oxygen deficiency in the incinerator is avoided, and the problem that the temperature of the incinerator is greatly reduced due to overlarge recirculated flue gas volume, so that the flue gas is not guaranteed at 850 ℃/2S is solved. In one example, over-fire air conduit 140 includes two conduits with opposing jets. The overfire air system arranged in opposite impact can ensure that the overfire air sprayed from the nozzle completely covers the cross section of the outlet of the incinerator, enhance the purging effect of the overfire air and ensure that gaseous combustible materials are completely combusted before leaving the incinerator. In one example, the over fire air conduit 140 may also pass other than air into the incinerator.
In conclusion, the upper layer and the lower layer of the recycling flue gas which are arranged in a staggered mode and the one layer of the over-fire air system which is arranged in an opposite-impact mode can avoid the running mode that the recycling flue gas is mixed with cold air or hot air due to lack of oxygen supplementing measures, and the safe, stable and economic running of the flue gas recycling process is ensured.
In one example, a recirculation fan 150 is also included, the recirculation fan 150 being disposed between the two ends of the recirculation flue gas duct 130.
In one example, the recirculation fan 150 is disposed between two ends of the main conduit 131.
In one example, the flue gas cleaning device 120 includes a reaction tower 121 and a bag-type dust collector 122 connected to each other.
In one example, a waste heat boiler a is disposed between the incinerator 110 and the reaction tower 121, that is, the incinerator 110 is connected with the waste heat boiler a, and the waste heat boiler a is connected with the reaction tower 121.
In one example, the bag-type dust collector 122 is connected with the induced draft fan b through a pipeline.
In one example, the induced draft fan b is connected with the chimney c through a pipeline.
In one example, the main pipe 131 is connected with a pipe between the induced draft fan b and the stack c.
Fig. 1 is a schematic diagram of a novel mixed flue gas recirculation process, wherein domestic garbage forms high-temperature flue gas after being combusted in a hearth, the high-temperature flue gas enters a flue gas purification device 120 after being subjected to heat exchange and cooling with boiler feed water in a waste heat boiler a, most harmful substances in the flue gas purification device 120 are removed, and finally the flue gas is discharged into the atmosphere through a chimney through a draught fan b. The primary air is introduced from the lower part of the incinerator in five units, the secondary air is designed to be arranged in a staggered mode in an upper layer and a lower layer, and the over-fire air is arranged in a one-layer hedging mode in the upper part of the secondary air. Part of the flue gas is extracted from the horizontal flue after the outlet of the induced draft fan b and before the inlet of the chimney, and is sent into secondary air nozzles at the upper layer and the lower layer by a recirculation fan 150 (an original secondary fan), so that the recirculated flue gas replaces the air of the original secondary air and is sprayed into the hearth. The over-fire air is extracted by an over-fire fan which is arranged independently and is sprayed into the hearth from an over-fire air nozzle.
The secondary air system with the upper layer and the lower layer arranged in a staggered mode can increase disturbance of a combustible gas combustion area, prolong the travel of combustible gas in the furnace, increase the retention time and improve the burnout rate. The overfire air arranged in an opposite impact way can completely cover the cross section of the outlet of the incinerator, so that the purging effect of the overfire air is ensured, and gaseous combustible materials are burnt out before leaving the incinerator.
The secondary air is completely replaced by the recirculated flue gas, so that the combustion-supporting air is changed from O2Replacement of fresh air with a content of 21% (volume fraction) by O2The content of the recycled flue gas is 10 percent (volume fraction), and the O in the incinerator is reduced2And (4) content, the generation of NOx is inhibited. Meanwhile, the air at normal temperature is replaced by high-temperature recirculated flue gas, the jet velocity of a secondary air nozzle is increased, the disturbance of the flue gas at the throat position of the incinerator is enhanced, and the combustible and O are enabled to be mixed2The chance of meeting is increased, further improving the burn-out rate. O at the location of the incinerator throat under intense recirculated flue gas purging2More uniform distribution, reduce O2The local area is violently combusted due to uneven concentration distribution, so that the generation of thermal NOx is reduced, and the risk of high-temperature coking of the incinerator is reduced.
The requirement of rapidly supplementing oxygen in the incinerator can be realized by keeping the over-fire air as air, the problem that CO emission exceeds standard due to oxygen deficiency in the incinerator is avoided, and the problem that the temperature of the incinerator is greatly reduced due to overlarge recirculated flue gas quantity, so that 850 ℃/2S of flue gas (the temperature of the flue gas exceeds 850 ℃, and the retention time of the flue gas exceeds 2S) cannot be guaranteed is solved. In addition, the running mode that the recycled flue gas is mixed with cold air or hot air due to lack of oxygen supplementing measures can be avoided, the safe, stable and economic running of the flue gas recycling process is ensured,
the utility model provides a hybrid flue gas recirculation technology has reduced O2 content in the burning furnace, has restrained fuel type NOx's formation, makes the O2 who burns burning furnace throat position distribute more evenly, thereby has reduced the regional formation that has reduced heating power type NOx of violent burning, has reduced the risk of burning furnace high temperature coking simultaneously. The secondary air arranged in a staggered manner in the last two layers and the over-fire air arranged in an opposite impact manner in the first layer enhance the disturbance of a combustible gas combustion area, prolong the travel of combustible gas in the furnace, increase the retention time and improve the over-fire rate. The requirement of rapidly supplementing oxygen in the incinerator is met, the problem that CO emission exceeds standard is avoided, and the requirement of 850 ℃/2S of flue gas is guaranteed. The running mode that the recycled flue gas is mixed with cold air or hot air is avoided, and the safe, stable and economic running of the flue gas recycling process is ensured.
The main invention points of the utility model are as follows:
1. the flue gas recirculation process of the upper layer and the lower layer of the garbage incinerator in staggered arrangement.
2. The garbage incinerator is independently designed into a over-fire air system above the secondary air system.
3. The secondary air is replaced by recycled flue gas and the over-fire air is kept as air in the mixed flue gas recycling system applied to the garbage incinerator.
Compared with the prior art, the utility model has the advantages of it is following:
1. the utility model discloses a secondary air system of upper and lower two-layer dislocation arrangement both can strengthen the regional disturbance of combustible gas burning, and the extension combustible gas is at the stove stroke, increases dwell time, improves the burn-off rate, can realize more nimble air distribution mode again.
2. The overfire air system arranged in opposite impact can ensure that the overfire air sprayed from the nozzle completely covers the cross section of the outlet of the incinerator, enhance the purging effect of the overfire air and ensure that gaseous combustible materials are completely combusted before leaving the incinerator.
3. The secondary air is completely replaced by the recycled flue gas, so that the content of O2 in the incinerator is reduced, the generation of fuel type NOx is inhibited, and the denitration cost is reduced.
4. The air at normal temperature is replaced by the high-temperature recirculated flue gas, the jet velocity of the secondary air nozzle is increased, the chance that gaseous combustible meets O2 is increased, and the gas phase burnout rate is further improved.
5. Under the strong blowing of the recirculated flue gas, the distribution of O2 at the throat position of the incinerator is more uniform, and the violent combustion in a local area caused by the uneven distribution of the concentration of O2 is reduced, so that the generation of thermal NOx is reduced, and the risk of high-temperature coking of the incinerator is reduced.
6. The requirement of rapidly supplementing oxygen in the incinerator can be realized by keeping the over-fire air as air, the problem of over-standard CO emission caused by oxygen deficiency in the incinerator is avoided, and the problem that the temperature of the incinerator is greatly reduced due to overlarge recirculated flue gas volume, so that the flue gas is not guaranteed at 850 ℃/2S is solved.
7. The upper layer and the lower layer of the recycling flue gas which are arranged in a staggered mode and the one layer of the over-fire air system which is arranged in an opposite-impact mode can avoid the running mode that the recycling flue gas is mixed with cold air or hot air due to lack of measures for supplementing oxygen, and ensure the safe, stable and economic running of the flue gas recycling process.
The utility model provides a novel household garbage incineration device, which comprises an incinerator and a flue gas purification device connected with the incinerator, wherein the household garbage incineration device comprises a recirculation flue gas pipeline, one end of the recirculation flue gas pipeline (the inlet of the recirculation flue gas pipe) is connected with one end of the flue gas purification device (the outlet of the flue gas purification device) far away from the incinerator along the flue gas flowing direction, the other end of the recirculation flue gas pipeline (the outlet of the recirculation flue gas pipeline) extends to be close to the incinerator, the recirculation flue gas is introduced into the incinerator as secondary air, the recirculation flue gas pipeline comprises a main pipeline and at least two branch pipelines connected with the main pipeline, one ends of the at least two branch pipelines close to the incinerator (the outlets of the branch pipelines) are arranged in a staggered way in the height direction of the incinerator, the household garbage incineration device also comprises an over-fire air pipeline, the over-fire air pipeline is positioned above the recirculating flue gas pipeline, and air enters the incinerator through the over-fire air pipeline.
The utility model provides a hybrid flue gas recirculation technology for mixed flow type waste incinerator, can solve the interior disturbance of current flue gas recirculation technology stove not enough, the interior oxygen content fluctuation of stove is big and lead to CO to discharge and exceed standard, the recirculated flue gas volume is too big and lead to the interior temperature decline of incinerator range big, can't satisfy the requirement of flue gas 850 ℃/2 seconds, the mixing cold air and lead to the flue gas dewfall, corrode fan and pipeline, the mixing hot-air needs extra firing equipment and leads to investment and the problem that the working costs is all on the high side.
The utility model discloses a similar replacement or the deformation of individual part among the domestic waste incineration equipment or component all fall into within the protection scope of the utility model.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A household garbage incineration device is characterized by comprising an incinerator and a flue gas purification device connected with the incinerator,
wherein the household garbage incineration equipment comprises a recirculation flue gas pipeline, the inlet of the recirculation flue gas pipeline is connected with the outlet of the flue gas purification device, the outlet of the recirculation flue gas pipeline extends to the throat of the incinerator, the recirculation flue gas is introduced into the incinerator as secondary air,
the household garbage incineration equipment further comprises an over-fire air pipeline, wherein a connection point of the over-fire air pipeline and the incinerator is located above a connection point of the recirculating flue gas pipeline and the incinerator, and the over-fire air pipeline is used for conveying air into the incinerator.
2. The household garbage incineration device according to claim 1, wherein the over-fire air pipeline comprises two pipelines, and the nozzles of the two pipelines are oppositely arranged.
3. The household garbage incineration apparatus according to claim 1, wherein the outlets of the recirculation flue gas pipes are arranged offset or at the same height in the height direction of the incinerator.
4. The household garbage incineration apparatus according to claim 1, wherein the recirculation flue gas pipeline includes a main pipeline and at least two branch pipelines connected to the main pipeline, the main pipeline is connected to the flue gas purification device, and outlets of the at least two branch pipelines extend to a throat of the incinerator and are arranged in a staggered manner in a height direction of the incinerator.
5. The household garbage incineration device of claim 4, further comprising a recirculation fan disposed on the main pipeline.
6. The household garbage incineration equipment according to claim 1, wherein the flue gas purification device comprises a reaction tower and a bag-type dust collector which are connected with each other.
7. The apparatus of claim 6, wherein the incinerator is connected to a waste heat boiler, and the reaction tower is connected to the waste heat boiler.
8. The household garbage incineration equipment according to claim 6, wherein the bag-type dust remover is connected with an induced draft fan through a pipeline, and the induced draft fan is connected with a chimney through a pipeline.
9. The household garbage incineration device according to claim 8, wherein a main pipeline is connected with a pipeline between the induced draft fan and the chimney.
10. The apparatus for incinerating household garbage according to claim 1, wherein the incinerator comprises a mixed flow type household garbage incinerator.
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| CN201921200054.7U CN211119357U (en) | 2019-07-26 | 2019-07-26 | Household garbage incineration equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112503535A (en) * | 2020-10-30 | 2021-03-16 | 光大环境科技（中国）有限公司 | Low NOXPollutant garbage incinerator |
| CN112833386A (en) * | 2021-01-05 | 2021-05-25 | 神华神东煤炭集团有限责任公司 | Flue gas denitrification system of chain furnace |
| CN113280351A (en) * | 2021-06-28 | 2021-08-20 | 中国天楹股份有限公司 | Flue gas recirculation system of household garbage incineration power plant |
| CN113464950A (en) * | 2021-06-04 | 2021-10-01 | 光大环境科技（中国）有限公司 | Household garbage incineration system based on flue gas recirculation multilayer air distribution |
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2019
- 2019-07-26 CN CN201921200054.7U patent/CN211119357U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503535A (en) * | 2020-10-30 | 2021-03-16 | 光大环境科技（中国）有限公司 | Low NOXPollutant garbage incinerator |
| CN112833386A (en) * | 2021-01-05 | 2021-05-25 | 神华神东煤炭集团有限责任公司 | Flue gas denitrification system of chain furnace |
| CN112833386B (en) * | 2021-01-05 | 2023-09-22 | 神华神东煤炭集团有限责任公司 | Flue gas denitrification system of chain furnace |
| CN113464950A (en) * | 2021-06-04 | 2021-10-01 | 光大环境科技（中国）有限公司 | Household garbage incineration system based on flue gas recirculation multilayer air distribution |
| CN113464950B (en) * | 2021-06-04 | 2023-06-13 | 光大环境科技（中国）有限公司 | Household garbage incineration system based on smoke recycling multilayer air distribution |
| CN113280351A (en) * | 2021-06-28 | 2021-08-20 | 中国天楹股份有限公司 | Flue gas recirculation system of household garbage incineration power plant |
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