CN211260812U - Garbage harmless treatment production line in high-altitude low-oxygen area - Google Patents
Garbage harmless treatment production line in high-altitude low-oxygen area Download PDFInfo
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- CN211260812U CN211260812U CN201922407846.8U CN201922407846U CN211260812U CN 211260812 U CN211260812 U CN 211260812U CN 201922407846 U CN201922407846 U CN 201922407846U CN 211260812 U CN211260812 U CN 211260812U
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- tail gas
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- temperature flue
- dioxin
- flue gas
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Abstract
The utility model discloses a refuse innocent treatment production line in high altitude and low oxygen area, which comprises an incinerator, a secondary combustion chamber, a combustion air heating chamber, a primary tail gas treatment device, a secondary tail gas treatment device, a dioxin catalytic degradation device and a deacidification tower, wherein the production line can recycle the heat in the discharged flue gas, and part of high-temperature flue gas discharged from the secondary combustion chamber is used for heating the combustion air to enter a primary combustion chamber, thereby being beneficial to the sufficient combustion during refuse incineration and being capable of assisting in reducing the generation of dioxin; part of the high-temperature flue gas enters the dioxin catalytic degradation device and exchanges heat with the tail gas to be catalytically degraded, so that the temperature of the tail gas to be degraded is kept in the activity range of the catalyst, and the dioxin is degraded under the action of the catalyst, so that the dioxin can be effectively removed.
Description
Technical Field
The utility model relates to a refuse treatment field specifically is a high altitude hypoxemia area rubbish innocent treatment production line.
Background
Incineration is a high-temperature heat treatment technology, toxic and harmful organic matters in wastes are destroyed at high temperature through incineration treatment, so that the reduction of the wastes can be realized, and the composition structure of the toxic wastes can be destroyed, so that the toxic and harmful organic matters finally become harmless ash slag with stable chemical properties, and the harmlessness of the wastes is realized. The solid waste is incinerated, the volume can be reduced by 80-95% generally, and the reduction is realized.
Dioxin is a colorless, tasteless and severely toxic fat-soluble substance, 90 percent of dioxin in the atmospheric environment is generated by urban and industrial waste incineration, and particularly, when chlorine-containing waste is incompletely combusted, the dioxin is easily generated. Particularly, when unburned substances that are not sufficiently burned meet a proper amount of catalyst substances (mainly heavy metals, particularly copper, etc.), dioxin that has been decomposed during high-temperature combustion is regenerated.
In the high-altitude area, because the oxygen content in the air is low, insufficient combustion is likely to occur when solid waste garbage is incinerated, and in this case, on the one hand, the incineration effect of the garbage is not good, and on the other hand, excessive dioxin is also likely to be generated. Therefore, the harmless treatment of the garbage is carried out in high-altitude areas, and the full utilization of heat and the treatment of dioxin are problems to be solved urgently.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a high altitude hypoxemia area rubbish innocent treatment production line, when fully burning when promoting msw incineration, the production of dioxin also can be effectively controlled.
The purpose of the utility model is realized through the following technical scheme:
a production line for harmless treatment of garbage in high altitude and low oxygen areas is characterized by comprising an incinerator, a secondary combustion chamber, a combustion air heating chamber, a primary tail gas treatment device, a secondary tail gas treatment device, a dioxin catalytic degradation device and a deacidification tower, wherein the incinerator is provided with a primary combustion chamber, the upper end of the incinerator is connected with the lower end of the secondary combustion chamber through a pipeline, so that combustible high-temperature flue gas generated by pyrolysis of the garbage enters the secondary combustion chamber from the incinerator through the pipeline, the secondary combustion chamber is respectively connected with the combustion air heating chamber and the dioxin catalytic degradation device through pipelines, the high-temperature flue gas carries heat after being combusted in the secondary combustion chamber and then respectively enters the combustion air heating chamber and the dioxin catalytic degradation device, the combustion air heating chamber is respectively connected with the incinerator and the primary tail gas treatment device through pipelines, so as to convey heated combustion air to the incinerator and cooled high-temperature flue gas to a primary tail gas treatment device; the dioxin catalytic degradation device is connected with the primary tail gas treatment device through a pipeline, so that the high-temperature flue gas cooled after heat exchange is conveyed back to the primary tail gas treatment device for treatment; the first-stage tail gas treatment device, the second-stage tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower are sequentially connected, and high-temperature flue gas cooled after heat exchange sequentially enters the first-stage tail gas treatment device, the second-stage tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower to be treated so as to reach the emission standard.
Furthermore, a bag-type dust collector is arranged in the primary tail gas treatment device.
Further, the specific structure of the dioxin catalytic degradation device is as follows: the device includes the reactor, connect second grade tail gas processing apparatus's tail gas intake pipe, the tail gas blast pipe of tail gas after the discharge catalytic degradation, tail gas and high temperature flue gas carry out the tail gas heat transfer pipeline of heat transfer, high temperature flue gas intake pipe, high temperature flue gas blast pipe, catalyst filler, perforated plate one, perforated plate two, the reactor is divided into two upper and lower cavitys by perforated plate two, the catalyst filler of catalytic degradation dioxin has been filled to the upper cavity, tail gas heat transfer pipeline arranges in the cavity of cavity down, tail gas intake-tube connection is cavity lower extreme down, tail gas blast pipe connects in the upper end of last cavity, high temperature flue gas intake-tube connection is cavity upper end down, high temperature flue gas blast pipe connects cavity lower extreme down, separate by perforated plate one between catalyst filler and the tail gas.
Furthermore, the primary combustion chamber, the combustion air heating chamber, the primary tail gas treatment device, the secondary tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower are arranged in a radiation mode by taking the secondary combustion chamber as a circle center.
The utility model has the advantages that:
1. the heat in the discharged flue gas is recycled, and part of high-temperature flue gas discharged from the secondary combustion chamber is used for heating combustion-supporting air to enter the primary combustion chamber, so that the waste is fully combusted during incineration, and the generation of dioxin can be reduced in an auxiliary manner; part of the high-temperature flue gas enters the dioxin catalytic degradation device and exchanges heat with the tail gas to be catalytically degraded, so that the temperature of the tail gas to be degraded is kept in the activity range of the catalyst, and the dioxin is degraded under the action of the catalyst, so that the dioxin can be effectively removed.
2. The primary combustion chamber, the combustion air heating chamber, the primary tail gas treatment device, the secondary tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower are arranged in a radiation mode by taking the secondary combustion chamber as a circle center, so that the pipeline distance of high-temperature flue gas in the secondary combustion chamber when the high-temperature flue gas is discharged to other devices can be shortened, heat loss in the high-temperature flue gas conveying process is avoided, and the heat of the high-temperature flue gas is effectively utilized.
Drawings
FIG. 1 is a schematic view of the arrangement of the production line of the present invention;
fig. 2 is a schematic structural diagram of a dioxin catalytic degradation device.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
The garbage innocent treatment production line comprises an incinerator 1, a secondary combustion chamber 2, a combustion air heating chamber 3, a primary tail gas treatment device 4, a secondary tail gas treatment device 5, a dioxin catalytic degradation device 6 and a deacidification tower 7, wherein the incinerator 1 is provided with a primary combustion chamber, the upper end of the incinerator 1 is connected with the lower end of the secondary combustion chamber 2 through a pipeline, so that combustible high-temperature flue gas generated by garbage pyrolysis enters the secondary combustion chamber 2 from the incinerator 1 through the pipeline, the secondary combustion chamber 2 is respectively connected with the combustion air heating chamber 3 and the dioxin catalytic degradation device 6 through pipelines, the high-temperature flue gas carries heat after being combusted in the secondary combustion chamber 2 and then respectively enters the combustion air heating chamber 3 and the dioxin catalytic degradation device 6, the combustion air heating chamber 3 is respectively connected with the incinerator 1 and the primary tail gas treatment device 4 through pipelines, so as to convey heated combustion-supporting air to the incinerator and cooled high-temperature flue gas to the primary tail gas treatment device. The dioxin catalytic degradation device is connected with the primary tail gas treatment device 4 through a pipeline, so that the high-temperature flue gas cooled after heat exchange is conveyed back to the primary tail gas treatment device for treatment. The primary tail gas treatment device 4, the secondary tail gas treatment device 5, the dioxin catalytic degradation device 6 and the deacidification tower are sequentially connected, and high-temperature flue gas cooled after heat exchange sequentially enters the primary tail gas treatment device 4, the secondary tail gas treatment device 5, the dioxin catalytic degradation device 6 and the deacidification tower 7 to be treated so as to reach the emission standard.
The primary tail gas treatment device 4 removes dust of tail gas through a bag-type dust remover, a caustic soda spray tower is installed in the secondary tail gas treatment device, a lime milk spray tower is installed in the deacidification tower, the secondary tail gas treatment device 5 purifies the tail gas through caustic soda, and the lime milk in the deacidification tower 7 is used as a neutralizer for acidic gas in the purified tail gas aiming at the acidic gas discharged from the dioxin catalytic degradation device.
The primary combustion chamber, the combustion air heating chamber, the primary tail gas treatment device, the secondary tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower are arranged in a radiation mode by taking the secondary combustion chamber as a circle center, and heat loss of high-temperature flue gas during conveying from the secondary combustion chamber to the combustion air heating chamber and the dioxin catalytic degradation device can be effectively avoided.
The specific structure of the dioxin catalytic degradation device 6 is as follows: the device includes reactor 8, connect second grade tail gas processing apparatus's tail gas intake pipe 9, the tail gas blast pipe 11 of tail gas after the discharge catalytic degradation, tail gas and high temperature flue gas carry out heat transfer's tail gas heat transfer pipeline 10, high temperature flue gas intake pipe 12, high temperature flue gas blast pipe 13, catalyst filler 14, perforated plate one 15, perforated plate two 16, the reactor is separated for upper and lower two cavitys by perforated plate two 16, the upper cavity has been filled with the catalyst filler of catalytic degradation dioxin, tail gas heat transfer pipeline 10 arranges in the cavity of cavity down, tail gas intake pipe 9 is connected at cavity lower extreme down, tail gas blast pipe 11 is connected in the upper cavity upper end, high temperature flue gas intake pipe 12 is connected in cavity upper end down, high temperature flue gas blast pipe 13 is connected cavity lower extreme down, the catalyst filler is separated by perforated plate one 15 between the tail gas.
From second grade tail gas processing apparatus exhaust tail gas that treats catalytic degradation gets into tail gas heat transfer pipeline 10 from tail gas intake pipe 9, cavity under the exhaust high temperature flue gas of second combustion chamber gets into from high temperature flue gas intake pipe 12, tail gas and high temperature flue gas take place the heat exchange in heat transfer pipeline 10, the tail gas that is heated gets into the cavity through perforated plate two 16, dioxin takes place to decompose under the effect of catalyst, then get into tail gas exhaust pipe 11 through perforated plate one 15, tail gas exhaust pipe 11 is connected with the deacidification tower. The high-temperature flue gas cooled after heat exchange is discharged from the high-temperature flue gas exhaust pipe 13, and the high-temperature flue gas exhaust pipe 13 is connected with a primary tail gas treatment device.
The production line comprises the following specific operation process steps:
s1, preprocessing the garbage;
s2, crushing the packaged garbage, analyzing the components by using an element analysis method, and analyzing the content of chlorine in the garbage;
s3, feeding the pretreated garbage into a primary combustion chamber in an incinerator for incineration and pyrolysis, adding sodium thiosulfate into the incinerator while incinerating the garbage, wherein the adding amount of the sodium thiosulfate is as follows according to the content of chlorine: the mole ratio of chlorine elements is 1: 3-5, feeding combustible high-temperature flue gas generated in the primary combustion chamber into a secondary combustion chamber for combustion;
s4, after the high-temperature flue gas is combusted in the secondary combustion chamber, the high-temperature flue gas carries heat and is sent into a combustion-supporting air heating chamber and a dioxin catalytic degradation device, so that the heat of the high-temperature flue gas is utilized to heat the combustion-supporting air and tail gas of dioxin to be catalytically degraded, and the heated combustion-supporting air is returned to the incinerator to help garbage to be fully combusted; the tail gas is heated by the high-temperature flue gas, so that the tail gas is kept in the active temperature range of the catalyst, and the inactivation of the catalyst is avoided;
s5, feeding the cooled high-temperature flue gas discharged from the combustion air heating chamber and the cooled high-temperature flue gas discharged from the dioxin catalytic degradation device into a primary tail gas treatment device for cloth bag dust removal;
s6, enabling the tail gas after the primary tail gas treatment to enter a secondary tail gas treatment device, and absorbing acid gases such as sulfur dioxide, carbon dioxide, hydrogen chloride and the like through caustic soda;
s7, carrying out catalytic degradation on the gas exhausted from the secondary tail gas treatment device in a dioxin catalytic degradation device, and effectively degrading a small amount of dioxin in the system;
and S8, introducing tail gas discharged from the dioxin catalytic degradation device into a deacidification tower, and neutralizing and removing acid gas through lime milk so as to reach the emission standard.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (4)
1. A production line for harmless treatment of garbage in high altitude and low oxygen areas is characterized by comprising an incinerator, a secondary combustion chamber, a combustion air heating chamber, a primary tail gas treatment device, a secondary tail gas treatment device, a dioxin catalytic degradation device and a deacidification tower, wherein the incinerator is provided with a primary combustion chamber, the upper end of the incinerator is connected with the lower end of the secondary combustion chamber through a pipeline, so that combustible high-temperature flue gas generated by pyrolysis of the garbage enters the secondary combustion chamber from the incinerator through the pipeline, the secondary combustion chamber is respectively connected with the combustion air heating chamber and the dioxin catalytic degradation device through pipelines, the high-temperature flue gas carries heat after being combusted in the secondary combustion chamber and then respectively enters the combustion air heating chamber and the dioxin catalytic degradation device, the combustion air heating chamber is respectively connected with the incinerator and the primary tail gas treatment device through pipelines, so as to convey heated combustion air to the incinerator and cooled high-temperature flue gas to a primary tail gas treatment device; the dioxin catalytic degradation device is connected with the primary tail gas treatment device through a pipeline, so that the high-temperature flue gas cooled after heat exchange is conveyed back to the primary tail gas treatment device for treatment; the first-stage tail gas treatment device, the second-stage tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower are sequentially connected, and high-temperature flue gas cooled after heat exchange sequentially enters the first-stage tail gas treatment device, the second-stage tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower to be treated so as to reach the emission standard.
2. The production line for harmless treatment of garbage in the high-altitude and low-oxygen area according to claim 1, wherein a bag-type dust collector is installed in the primary tail gas treatment device.
3. The production line for harmless treatment of garbage in a high-altitude and low-oxygen area according to claim 1, wherein the specific structure of the dioxin catalytic degradation device is as follows: the device includes the reactor, connect second grade tail gas processing apparatus's tail gas intake pipe, the tail gas blast pipe of tail gas after the discharge catalytic degradation, tail gas and high temperature flue gas carry out the tail gas heat transfer pipeline of heat transfer, high temperature flue gas intake pipe, high temperature flue gas blast pipe, catalyst filler, perforated plate one, perforated plate two, the reactor is divided into two upper and lower cavitys by perforated plate two, the catalyst filler of catalytic degradation dioxin has been filled to the upper cavity, tail gas heat transfer pipeline arranges in the cavity of cavity down, tail gas intake-tube connection is cavity lower extreme down, tail gas blast pipe connects in the upper end of last cavity, high temperature flue gas intake-tube connection is cavity upper end down, high temperature flue gas blast pipe connects cavity lower extreme down, separate by perforated plate one between catalyst filler and the tail gas.
4. The production line for harmless treatment of garbage in a high-altitude and low-oxygen area according to claim 1, wherein the primary combustion chamber, the combustion air heating chamber, the primary tail gas treatment device, the secondary tail gas treatment device, the dioxin catalytic degradation device and the deacidification tower are arranged in a radiation manner by taking the secondary combustion chamber as a circle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922407846.8U CN211260812U (en) | 2019-12-27 | 2019-12-27 | Garbage harmless treatment production line in high-altitude low-oxygen area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922407846.8U CN211260812U (en) | 2019-12-27 | 2019-12-27 | Garbage harmless treatment production line in high-altitude low-oxygen area |
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| CN211260812U true CN211260812U (en) | 2020-08-14 |
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| CN201922407846.8U Expired - Fee Related CN211260812U (en) | 2019-12-27 | 2019-12-27 | Garbage harmless treatment production line in high-altitude low-oxygen area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659375A (en) * | 2022-04-22 | 2022-06-24 | 无锡红旗除尘设备有限公司 | Electric furnace flue gas ultra-clean treatment method |
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2019
- 2019-12-27 CN CN201922407846.8U patent/CN211260812U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114659375A (en) * | 2022-04-22 | 2022-06-24 | 无锡红旗除尘设备有限公司 | Electric furnace flue gas ultra-clean treatment method |
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Granted publication date: 20200814 Termination date: 20201227 |