CN210601639U - Utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature - Google Patents
Utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature Download PDFInfo
- Publication number
- CN210601639U CN210601639U CN201920775841.8U CN201920775841U CN210601639U CN 210601639 U CN210601639 U CN 210601639U CN 201920775841 U CN201920775841 U CN 201920775841U CN 210601639 U CN210601639 U CN 210601639U
- Authority
- CN
- China
- Prior art keywords
- temperature
- catalytic combustion
- low
- flue gas
- dioxin
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Chimneys And Flues (AREA)
Abstract
The utility model discloses a garbage burning system for preventing dioxin from being synthesized at low temperature by utilizing catalytic combustion, which comprises a garbage burning furnace, a high-temperature heat exchanger, a high-temperature dust remover, a catalytic combustion device, a low-temperature heat exchanger and a flue gas purification device; the flue gas discharged by the garbage incineration is cooled by a high-temperature heat exchanger and then passes through a high-temperature dust remover to remove most of solid substances such as dust, carbon particles and the like in the flue gas, and the flue gas is removed to be used as a catalyst for low-temperature synthesis of dioxin; the purified flue gas enters a catalytic combustion device, carbon particles and carbon-containing organic matters in the flue gas are converted into carbon dioxide and water after catalytic combustion, the carbon particles and the carbon-containing organic matters which are necessary for low-temperature synthesis of dioxin are eliminated, and the flue gas is lack of catalysts, the carbon particles and the carbon-containing organic matters which are needed for low-temperature synthesis of the dioxin within the range of 200-400 ℃ of the low-temperature synthesis of the dioxin, so that the low-temperature synthesis of the dioxin is effectively prevented, and the pollution of waste incineration to the environment is reduced.
Description
Technical Field
The utility model relates to a waste incineration technique, in particular to utilize catalytic combustion to prevent the synthetic waste incineration system of dioxin low temperature.
Background
The waste incineration treatment has the advantages of reduction, harmlessness, obvious resource utilization and the like, and is rapidly popularized and applied. However, the incineration treatment of garbage produces dioxin (Dioxins) which is a highly toxic substance, and threatens the living environment of human beings. In the waste incineration process, the generation mode of dioxin comprises the following steps: in-furnace generation and low-temperature synthesis in a tail flue.
By the process of '3T + E', namely, controlling: the burning temperature, the residence time of the flue gas in the furnace, the gas-solid turbulence degree of the flue gas and the excessive air quantity can effectively control the generation of dioxin in the furnace. The low-temperature synthesis principle of dioxin in the tail flue is that the temperature of flue gas in the tail flue ranges from 200 ℃ to 400 ℃, certain metal compounds in fly ash are used as catalysts, and carbon particles and carbon-containing organic matters which are not fully burnt out by garbage react with chlorine to generate dioxin. Because the temperature of the hearth of the garbage incinerator is above 800 ℃, and the temperature of the flue gas at the inlet of the chimney is below 200 ℃, the flue gas generated by garbage incineration inevitably goes through a temperature area for dioxin low-temperature synthesis, and the low-temperature synthesis reaction of the dioxin inevitably occurs. In order to prevent dioxin generated by waste incineration from entering the atmosphere along with flue gas, in the flue gas purification treatment of a waste incineration plant, activated carbon is sprayed into a tail flue to adsorb the dioxin in the flue gas, the activated carbon is captured by a dust removal device and enters fly ash collected by a dust remover, and finally the dioxin in the fly ash causes environmental risks along with the emission of the fly ash into the environment.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a refuse burning system which utilizes catalytic combustion to prevent the low-temperature synthesis of dioxin, and effectively prevents the low-temperature synthesis of dioxin in the refuse burning process.
In order to achieve the above object, the utility model adopts the following technical scheme:
a garbage burning system for preventing dioxin from being synthesized at low temperature by utilizing catalytic combustion comprises a garbage burning furnace, a high-temperature heat exchanger, a high-temperature dust remover, a catalytic combustion device, a low-temperature heat exchanger and a flue gas purification device;
the exhaust port of the garbage incinerator is connected with the high-temperature heat exchanger, the smoke outlet of the high-temperature heat exchanger is connected with the high-temperature dust remover, most of solid substances such as dust, carbon particles and the like in smoke are collected by the high-temperature dust remover, the smoke outlet of the high-temperature dust remover is connected with the catalytic combustion device, the carbon particles and carbon-containing organic matters in the smoke are converted into nontoxic carbon dioxide and water through the catalytic combustion device, the smoke outlet of the catalytic combustion device is connected with the low-temperature heat exchanger, the smoke outlet of the low-temperature heat exchanger is connected with the smoke purification device, and the smoke is purified and.
Furthermore, a temperature sensor is arranged at the position of the flue gas outlet of the high-temperature dust remover, and the temperature of the flue gas is monitored through the temperature sensor.
Furthermore, the dust removing material of the high-temperature dust remover adopts a porous filtering metal material, a porous ceramic filtering material or a porous composite filtering material.
Further, the catalyst substrate adopted by the catalytic combustion device is a porous ceramic substrate, a porous metal substrate or a porous composite substrate.
The utility model has the advantages that:
the utility model discloses a garbage burning system for preventing dioxin from being synthesized at low temperature by catalytic combustion, which comprises a garbage burning furnace, a high temperature heat exchanger, a high temperature dust remover, a catalytic combustion device, a low temperature heat exchanger and a flue gas purification device; the temperature of the flue gas discharged by the waste incineration in the waste incinerator is reduced to 450 +/-50 ℃ by a high-temperature heat exchanger, the temperature range is higher than the low-temperature synthesis temperature range of dioxin, and the dioxin cannot be synthesized in the link; then the flue gas passes through a high-temperature dust remover to remove most of solid substances such as dust, carbon particles and the like in the flue gas, thereby not only removing the catalyst used for low-temperature synthesis of dioxin, but also avoiding the abrasion and poisoning of the dust, the carbon particles and the like in the flue gas on the catalyst of a subsequent catalytic combustion device and avoiding the blockage of the catalytic combustion device; the purified flue gas enters a catalytic combustion device, carbon particles and carbon-containing organic matters which are remained in the flue gas and are not completely burnt by burning garbage are converted into carbon dioxide and water in the temperature range of 450 +/-50 ℃ after catalytic combustion, and the carbon particles and the carbon-containing organic matters which are necessary for low-temperature synthesis of dioxin are eliminated. The temperature of the heat released by the flue gas after catalytic combustion in the low-temperature heat exchanger is reduced to below 200 ℃, the flue gas passes through a temperature range from 400 ℃ to 200 ℃, and the flue gas lacks a catalyst, carbon particles and carbon-containing organic matters required by low-temperature synthesis of dioxin in a range from 200 ℃ to 400 ℃ of low-temperature synthesis of dioxin, so that the low-temperature synthesis of dioxin is effectively prevented, and the pollution of garbage incineration to the environment is reduced.
Furthermore, a temperature sensor is arranged at the position of a flue gas outlet of the high-temperature dust remover, the temperature of the flue gas is monitored by the temperature sensor, then the combustion condition of the garbage incinerator is adjusted, the temperature of the high-temperature flue gas is guaranteed to be reduced to 450 +/-50 ℃ through a high-temperature heat exchanger, and the temperature of the flue gas is reduced as much as possible on the premise that the temperature of the flue gas is not lower than 400 ℃.
In the catalytic combustion device, residual carbon particles and carbon-containing organic matters in the flue gas and oxygen are subjected to catalytic oxidation reaction under the action of the catalyst, so that the dioxin is prevented from being generated at low temperature, and the generated products are carbon dioxide and water, so that the environment is not polluted, and the catalytic combustion device is safe and environment-friendly.
Drawings
FIG. 1 is a schematic diagram of the system structure of the present invention
In the figure: 1-a garbage incinerator, 2-a high-temperature heat exchanger, 3-a high-temperature dust remover, 4-a temperature sensor, 5-a catalytic combustion device, 6-a low-temperature heat exchanger and 7-a flue gas purification device.
Detailed Description
The present invention will be described in further detail with reference to the following specific examples, which should not be construed as limiting the invention.
As shown in figure 1, the utility model discloses utilize catalytic combustion to prevent the synthetic msw incineration system of dioxin low temperature, including waste incinerator 1, high temperature heat exchanger 2, high temperature dust remover 3, temperature sensor 4, catalytic combustion device 5, low temperature heat exchanger 6, gas cleaning device 7.
The smoke outlet of the garbage incinerator 1 is connected with the high-temperature heat exchanger 2, the high-temperature smoke discharged by the garbage incinerator 1 is cooled through the high-temperature heat exchanger 2, the flue gas outlet of the high-temperature heat exchanger 2 is connected with the high-temperature dust remover 3, the high-temperature dust remover removes most solid substances such as dust, carbon particles and the like in the flue gas, the flue gas outlet of the high-temperature dust remover 3 is connected with the catalytic combustion device 5, the carbon particles and carbon-containing organic matters are combusted at a lower ignition temperature by means of a catalyst, organic waste gas is decomposed into nontoxic carbon dioxide and water, the flue gas outlet of the catalytic combustion device 5 is connected with the low-temperature heat exchanger 6, the temperature of the flue gas is reduced to below 200 ℃ through the low-temperature heat exchanger 6, the flue gas outlet of the low-temperature heat exchanger 6 is connected with the flue gas purification device 7, the flue gas is further purified through the flue gas purification device, and the flue gas is discharged into the atmosphere under the condition that the flue gas meets the environment-friendly discharge requirement.
A temperature sensor 4 is arranged at the position of a flue gas outlet of the high-temperature dust remover 3, the temperature of the flue gas is monitored by the temperature sensor 4, then the combustion condition of the garbage incinerator 1 is adjusted, and the temperature of the high-temperature flue gas is guaranteed to be reduced to 450 +/-50 ℃ through the high-temperature heat exchanger 2.
The dust removing material of the high-temperature dust remover 3 can adopt a porous metal filtering material, a porous ceramic filtering material or other porous composite filtering materials.
The catalyst of the catalytic combustion device 5 may be a noble metal catalyst palladium or platinum, or may be a non-noble metal catalyst, such as an oxide of cadmium metal, an oxide of manganese metal, an oxide of iron metal, an oxide of cobalt metal, or an oxide of copper metal, and the catalyst substrate may be a porous ceramic substrate, a porous metal substrate, or a porous composite substrate.
Based on the above waste incineration system, the utility model also provides an utilize catalytic combustion to prevent the synthetic waste incineration method of dioxin low temperature, including following step:
the method comprises the following steps: introducing flue gas generated by waste incineration into a high-temperature heat exchanger to cool the high-temperature flue gas, wherein the temperature of the flue gas is reduced to 450 +/-50 ℃;
step two: introducing the cooled flue gas into a high-temperature dust remover for dust removal and purification treatment, and removing most of solid substances such as dust, carbon particles and the like in the flue gas by the high-temperature dust remover;
step three: the flue gas purified by the high-temperature dust remover enters a catalytic combustion device, residual carbon particles in the flue gas and carbon-containing organic matters in the flue gas are subjected to catalytic oxidation reaction with oxygen under the action of a catalyst by utilizing the catalytic action of the catalyst to generate carbon dioxide and water;
step four: the flue gas after dust removal purification and catalytic combustion is introduced into a low-temperature heat exchanger, and the temperature of the flue gas is reduced to below 200 ℃ through a low-temperature heat exchanger 6;
step five: the low-temperature flue gas enters a flue gas purification device, and is discharged into the atmosphere under the condition of meeting the environment-friendly discharge requirement after purification measures such as deacidification, dust removal, dioxin removal and the like are completed.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (4)
1. The utility model provides an utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature which characterized in that: comprises a garbage incinerator (1), a high-temperature heat exchanger (2), a high-temperature dust remover (3), a catalytic combustion device (5), a low-temperature heat exchanger (6) and a flue gas purification device (7);
the exhaust port of the garbage incinerator (1) is connected with the high-temperature heat exchanger (2), the smoke outlet of the high-temperature heat exchanger (2) is connected with the high-temperature dust remover (3), dust and carbon particles in smoke of the high-temperature dust remover are removed, the smoke outlet of the high-temperature dust remover (3) is connected with the catalytic combustion device (5), the carbon particles and carbon-containing organic matters in the smoke are converted into nontoxic carbon dioxide and water through the catalytic combustion device (5), the smoke outlet of the catalytic combustion device (5) is connected with the low-temperature heat exchanger (6), the smoke outlet of the low-temperature heat exchanger (6) is connected with the smoke purification device (7), and the smoke is exhausted after being purified.
2. The waste incineration system for preventing the low-temperature synthesis of dioxin using catalytic combustion as claimed in claim 1, characterized in that: and a temperature sensor (4) is arranged at the position of a flue gas outlet of the high-temperature dust remover (3), and the temperature of the flue gas is monitored by the temperature sensor (4).
3. The waste incineration system for preventing the low-temperature synthesis of dioxin using catalytic combustion as claimed in claim 2, characterized in that: the dust removal material of the high-temperature dust remover (3) adopts a porous metal filter material, a porous ceramic filter material or a porous composite filter material.
4. The waste incineration system for preventing the low-temperature synthesis of dioxin using catalytic combustion as claimed in claim 3, characterized in that: the catalyst substrate adopted by the catalytic combustion device (5) is a porous ceramic substrate, a porous metal substrate or a porous composite substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920775841.8U CN210601639U (en) | 2019-05-27 | 2019-05-27 | Utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920775841.8U CN210601639U (en) | 2019-05-27 | 2019-05-27 | Utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210601639U true CN210601639U (en) | 2020-05-22 |
Family
ID=70694377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920775841.8U Active CN210601639U (en) | 2019-05-27 | 2019-05-27 | Utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210601639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056889A (en) * | 2019-05-27 | 2019-07-26 | 桂林航天工业学院 | A kind of refuse burning system and method preventing the synthesis of dioxin low temperature using catalysis burning |
-
2019
- 2019-05-27 CN CN201920775841.8U patent/CN210601639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056889A (en) * | 2019-05-27 | 2019-07-26 | 桂林航天工业学院 | A kind of refuse burning system and method preventing the synthesis of dioxin low temperature using catalysis burning |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109482052A (en) | CO and NO in a kind of purifying sintering flue gasxDevice and method | |
| CN101869800B (en) | Method and system for purifying flue gas generated by incinerating waste materials | |
| WO2018192564A1 (en) | Flue gas purification system for domestic waste pyrolysis incinerator | |
| CN108452663A (en) | Solid waste incineration flue gas processing method | |
| CN210601639U (en) | Utilize catalytic combustion to prevent synthetic msw incineration system of dioxin low temperature | |
| CN110448992A (en) | Dioxins in flue gas emission-reducing system and method in a kind of Refuse Incineration Process | |
| CN101822946A (en) | Low energy consumption sintering flue gas dioxin emission-reducing system and method thereof | |
| CN111389166A (en) | Hazardous waste incinerator tail gas purification process | |
| CN110030570A (en) | Based on the integrated refuse burning system of the selective catalytic denitrification process plasma and method | |
| CN210601689U (en) | Waste incineration system based on integration of selective catalytic denitration and catalytic combustion | |
| CN201289090Y (en) | Flyash combustible recycling and dioxin pollution removing device | |
| CN102895856A (en) | Waste incineration flue gas purification equipment and purification process thereof | |
| JP3545266B2 (en) | Dry exhaust gas treatment method and apparatus | |
| CN214233470U (en) | Incineration flue gas ultralow emission purification treatment system | |
| CN215489766U (en) | Burn burning furnace clean system | |
| CN114674160A (en) | Electric furnace flue gas treatment method | |
| JPH11257619A (en) | City refuse combustion device | |
| CN212068224U (en) | Dust removal, denitration, take off dioxin integrated device | |
| CN113623673A (en) | Garbage incineration system and method for preventing dioxin from being synthesized at low temperature by using plasma | |
| CN208493814U (en) | A kind of dioxin removing means of applications catalyst | |
| CN111359355A (en) | Dust removal, denitration, take off dioxin integrated device | |
| CN108421390B (en) | Method for combined denitration and dioxin removal of waste incineration flue gas | |
| CN110006065A (en) | Refuse burning system and method based on the selective catalytic denitrification process catalysis combustion integrative | |
| CN220417360U (en) | Tail gas purifying treatment system of distributed household garbage pyrolysis furnace | |
| KR100260743B1 (en) | Exhaust gas purifier of an incinerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |