CN216175283U - Fly ash pyrolysis device and system for harmless disposal of waste incineration fly ash - Google Patents
Fly ash pyrolysis device and system for harmless disposal of waste incineration fly ash Download PDFInfo
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- CN216175283U CN216175283U CN202122426263.7U CN202122426263U CN216175283U CN 216175283 U CN216175283 U CN 216175283U CN 202122426263 U CN202122426263 U CN 202122426263U CN 216175283 U CN216175283 U CN 216175283U
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 158
- 239000010881 fly ash Substances 0.000 title claims abstract description 148
- 238000004056 waste incineration Methods 0.000 title claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003546 flue gas Substances 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 10
- 239000002956 ash Substances 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 12
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 27
- 238000005265 energy consumption Methods 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 238000006298 dechlorination reaction Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000382 dechlorinating effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Gasification And Melting Of Waste (AREA)
Abstract
The utility model belongs to the technical field of harmless treatment of waste incineration fly ash, and particularly relates to a fly ash pyrolysis device and a fly ash pyrolysis system for harmless treatment of waste incineration fly ash. The device comprises a pyrolysis heating chamber, a fly ash spiral auger anaerobic pyrolysis component, a water-cooling spiral conveyor, a pyrolysis gas induced draft fan and an incineration flue gas induced draft fan; the discharge port of the fly ash screw auger anaerobic pyrolysis component is connected with the feed port of the water-cooling screw conveyor; the pyrolysis gas induced draft fan is used for leading out pyrolysis gas generated by the fly ash spiral auger anaerobic pyrolysis component and discharging the pyrolysis gas; the incineration flue gas induced draft fan is used for leading out incineration flue gas generated in the pyrolysis heating chamber and discharging the incineration flue gas. The method can decompose the dioxin in the waste incineration fly ash at low temperature, reduce the concentration of the dioxin in the waste incineration fly ash to 50ng-TEQ/kg, and effectively control the pyrolysis temperature of the fly ash to reach the optimal pyrolysis temperature.
Description
Technical Field
The utility model belongs to the technical field of harmless treatment of waste incineration fly ash, and particularly relates to a fly ash pyrolysis device and a fly ash pyrolysis system for harmless treatment of waste incineration fly ash.
Background
With the improvement of the living consumption level of residents, the production amount of household garbage is increased year by year. At present, according to the national guidelines, the treatment of redundant household garbage requires the reduction treatment of the household garbage by adopting a garbage incineration treatment process. After the household garbage is subjected to incineration disposal, 3% -5% of incineration residues can be generated, and the annual production amount is very large. The waste incineration fly ash is administered as a hazardous waste, and the hazardous waste is represented by HW 18.
For the waste incineration disposal process, the common disposal routes at present are fly ash landfill, fly ash water washing cement kiln cooperative disposal and other recycling building material treatment routes. For the above disposal routes, the national regulations have clear index requirements for the content of dioxin in the treated fly ash, which relates to that the dioxin needs to be removed by adopting a desired means in the fly ash disposal process. The decomposition of dioxin has two treatments of high temperature and low temperature, the difference is high energy consumption compared with high temperature (more than 1100 ℃), and the low-temperature anaerobic pyrolysis has a wide application prospect due to lower operation cost and investment cost.
For the low-temperature pyrolysis process, how to control the oxygen-free atmosphere, reduce the operation energy consumption and reduce the emission of waste gas pollutants is a decisive factor for the process popularization. Therefore, it is necessary to design a fly ash pyrolysis device and system for harmless disposal of waste incineration fly ash, which can save energy consumption, save cost, and operate continuously and stably.
For example, chinese patent application No. CN201310049924.6, which is an apparatus for treating incineration fly ash, describes an apparatus for treating incineration fly ash, including: a dechlorination reaction device for dechlorinating dioxin in the fly ash in a non-oxidizing atmosphere at a preset temperature and under the pressure of micro positive pressure so as to obtain a dechlorination treatment product; and the quick cooling device is connected with the dechlorination reaction device and is used for quickly cooling the dechlorination treatment product so as to obtain the treated incineration fly ash. Although incineration fly ash containing dioxin can be effectively treated using the apparatus, there are disadvantages in that the problem of unstable operation due to non-uniform heating of fly ash cannot be solved, and it is difficult to achieve an anaerobic atmosphere condition of fly ash dioxin during thermal decomposition, the removal rate of fly ash dioxin is not high, and the amount of energy consumption is large.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fly ash pyrolysis device and a fly ash pyrolysis system for harmless disposal of waste incineration fly ash, which save energy consumption, save cost and operate continuously and stably, and aims to overcome the problems that the existing waste incineration treatment device in the prior art cannot control anaerobic atmosphere, has high operation energy consumption and large discharge amount of waste gas pollutants.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
a fly ash pyrolysis device for harmless disposal of waste incineration fly ash comprises a pyrolysis heating chamber, a fly ash spiral auger anaerobic pyrolysis component, a water-cooling spiral conveyor, a pyrolysis gas induced draft fan and an incineration flue gas induced draft fan, wherein the fly ash spiral auger anaerobic pyrolysis component is arranged in the pyrolysis heating chamber; the discharge hole of the fly ash spiral auger anaerobic pyrolysis component is connected with the feed inlet of the water-cooling spiral conveyor; the pyrolysis gas induced draft fan is used for leading out pyrolysis gas generated by the fly ash spiral auger anaerobic pyrolysis component and discharging the pyrolysis gas; the incineration flue gas draught fan is used for leading out incineration flue gas generated in the pyrolysis heating chamber and discharging the incineration flue gas.
Preferably, the pyrolysis heating chamber comprises an upper stage pyrolysis heating chamber A and a lower stage pyrolysis heating chamber B; the upper stage pyrolysis heating chamber A is positioned above the lower stage pyrolysis heating chamber B; the upper stage pyrolysis heating chamber A and the lower stage pyrolysis heating chamber B both comprise two independent smoke chambers; each independent smoke chamber is provided with a burner; the burner controls the pyrolysis temperature of the fly ash in sections by adjusting the temperature.
Preferably, the fly ash spiral auger oxygen-insulation pyrolysis component comprises an upper spiral auger element and a lower spiral auger element; the feed opening of the upper-level spiral auger element is connected with the feed opening of the lower-level spiral auger element; spiral reamer is arranged in the upper spiral auger element and the lower spiral auger element; the middle part of the upper spiral auger element is positioned in the upper pyrolysis heating chamber A; the middle part of the lower spiral auger element is positioned in the lower pyrolysis heating chamber B.
Preferably, the fly ash device also comprises a fly ash buffer bin; the fly ash buffer bin comprises a primary buffer bin and a secondary buffer bin; after being buffered by the primary buffer bin, the fly ash enters a secondary buffer bin and is then sent into a fly ash spiral auger anaerobic pyrolysis component for pyrolysis; high-purity nitrogen is introduced into the primary buffer bin; and a dust remover is also arranged in the primary buffer bin.
Preferably, the fly ash feeding device further comprises a fly ash feeding bin pump; and the fly ash discharging bin pump is used for conveying fly ash conveyed by the water-cooled screw conveyor.
Preferably, the device also comprises a flue gas purification device; the flue gas purification device is used for purifying pyrolysis gas generated by the flying ash spiral auger anaerobic pyrolysis component.
Preferably, a jacket is arranged outside the water-cooled screw conveyor, circulating cooling inlet water enters the jacket from the tail end of the water-cooled screw conveyor, and circulating cooling return water exits the jacket from the front end of the water-cooled screw conveyor; and high-purity nitrogen is introduced into the water-cooled screw conveyer.
Preferably, the oxygen content in the fly ash spiral auger anaerobic pyrolysis component is lower than 1%, and the temperature is 200-400 ℃; the preheating temperature of the upper pyrolysis heating chamber A is 200-250 ℃, and the heat preservation temperature of the lower pyrolysis heating chamber B is 250-400 ℃.
The utility model also provides a fly ash pyrolysis system for harmless treatment of waste incineration fly ash, which comprises the fly ash pyrolysis device for harmless treatment of waste incineration fly ash according to any one scheme.
Compared with the prior art, the utility model has the beneficial effects that: (1) the method can decompose the dioxin in the waste incineration fly ash at low temperature, and has the characteristics of energy consumption saving, cost saving, continuous and stable operation and capability of effectively reducing the discharge of pollutants; (2) the utility model can reduce the concentration of dioxin in waste incineration fly ash to 50ng-TEQ/kg, and simultaneously can reduce the emission concentration of dioxin in waste gas to less than 0.1ng-TEQ/Nm3(ii) a (3) According to the utility model, dioxin in the waste incineration fly ash is decomposed at low temperature, an anaerobic atmosphere can be realized, the oxygen content can be reduced to below 1%, and the independent smoke chamber structure can effectively control the pyrolysis temperature of the fly ash to reach the optimal pyrolysis temperature.
Drawings
FIG. 1 is a schematic structural diagram of a fly ash pyrolysis apparatus for harmless disposal of waste incineration fly ash in example 1 of the present invention.
In the figure: the system comprises raw ash 01 of waste incineration fly ash, fly ash 02 after dioxin removal, high-purity nitrogen 03, pyrolysis gas 04, incineration flue gas 05, circulating cooling inlet water 06, circulating cooling return water 07, a fly ash buffer bin 08, an upper auger feed inlet 09, a first-stage combustor 10, a second-stage combustor 11, an upper auger element 12, an upper auger feed outlet 13, a lower auger element 14, a third-stage combustor 15, a fourth-stage combustor 16, a lower auger feed outlet 17, a water-cooled screw conveyor 18, a fly ash feed bin pump 19, a flue gas purification device 20, a pyrolysis gas induced draft fan 21, an incineration flue gas induced draft fan 22, an upper pyrolysis heating chamber A and a lower pyrolysis heating chamber B.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Example 1:
the fly ash pyrolysis device for harmless disposal of waste incineration fly ash shown in fig. 1 comprises a pyrolysis heating chamber, a fly ash spiral auger anaerobic pyrolysis component arranged in the pyrolysis heating chamber, a water-cooling spiral conveyor 18, a pyrolysis gas induced draft fan 21 and an incineration flue gas induced draft fan 22; the discharge hole of the fly ash spiral auger anaerobic pyrolysis component is connected with the feed inlet of the water-cooling spiral conveyor; the pyrolysis gas induced draft fan is used for leading out pyrolysis gas 04 generated by the fly ash spiral auger anaerobic pyrolysis component and discharging the pyrolysis gas 04; the incineration flue gas induced draft fan is used for leading out the incineration flue gas 05 generated in the pyrolysis heating chamber and discharging the incineration flue gas.
The pyrolysis heating chamber comprises an upper stage pyrolysis heating chamber A and a lower stage pyrolysis heating chamber B; the upper stage pyrolysis heating chamber A is positioned above the lower stage pyrolysis heating chamber B; the upper stage pyrolysis heating chamber A and the lower stage pyrolysis heating chamber B both comprise two independent smoke chambers; each independent smoke chamber is provided with a burner; the burner controls the pyrolysis temperature of the fly ash in sections by adjusting the temperature. The combustor in fig. 1 includes a first stage combustor 10, a second stage combustor 11, a third stage combustor 15 and a fourth stage combustor 16.
The fly ash spiral auger oxygen-insulation pyrolysis component comprises an upper spiral auger element 12 and a lower spiral auger element 14; a feeding port 13 of the upper auger element is connected with a feeding port of the lower auger element; spiral reamer is arranged in the upper spiral auger element and the lower spiral auger element; the middle part of the upper spiral auger element is positioned in the upper pyrolysis heating chamber A, and the two ends of the upper spiral auger element are positioned outside the upper pyrolysis heating chamber A; the middle part of the lower spiral auger element is positioned in the lower pyrolysis heating chamber B, and the two ends of the lower spiral auger element are positioned outside the lower pyrolysis heating chamber B.
The pyrolysis heating chamber in the utility model needs to be dried before running, the preheating temperature of the upper pyrolysis heating chamber A is 200-250 ℃, and the heat preservation temperature of the lower pyrolysis heating chamber B is 250-400 ℃. Wherein the fuel of the first-stage burner, the second-stage burner, the third-stage burner and the fourth-stage burner is supplied by a natural gas station, nitrogen is continuously introduced into the upper-stage spiral auger element and the lower-stage spiral auger element during the furnace drying, the oxygen content in the auger is detected by an oxygen detector, and when the oxygen content is lower than 1%, the wall temperature of the upper-stage auger element and the lower-stage auger element reaches a set temperature, the raw ash 01 of the waste incineration fly ash can be introduced.
Further, the fly ash pyrolysis device for harmless disposal of the waste incineration fly ash also comprises a fly ash buffer bin 08; and after being buffered by the fly ash buffer bin, the fly ash is sent into the fly ash spiral auger anaerobic pyrolysis component for pyrolysis. The raw ash of the waste incineration fly ash is sent into a primary buffering bin by a pipe chain conveying device, oxygen brought in the feeding process is replaced by continuously introducing high-purity nitrogen 03 during feeding, the fly ash entering a pyrolysis system is guaranteed to have an oxygen-deficient environment, and the fly ash in the primary buffering bin is continuously sent into a higher-level auger feed inlet 09 by a spiral weighing conveyor after entering a secondary buffering bin.
The reaction time of the waste incineration fly ash in the pyrolysis heating chamber is ensured by setting the rotating speed of the speed reducers of the upper spiral auger element and the lower spiral auger element, the preheated waste incineration fly ash falls into the lower pyrolysis heating chamber B from the upper pyrolysis heating chamber A through the upper auger feed opening 13, and the fly ash 02 is discharged through the star-shaped discharge valve at the lower auger feed opening 17 after dioxin is removed.
Further, a fly ash discharging bin pump 19 is also included; and the fly ash discharging bin pump is used for conveying fly ash conveyed by the water-cooled screw conveyor. And after dioxin is removed, the fly ash enters a fly ash discharging bin pump through a water-cooling screw conveyor and finally enters a pyrolysis ash bin.
Further, a jacket is arranged outside the water-cooled screw conveyor, circulating cooling inlet water 06 enters the jacket from the tail end of the water-cooled screw conveyor, circulating cooling return water 07 exits the jacket from the front end of the water-cooled screw conveyor, and the flying ash after dioxin removal is ensured to have the opposite movement direction to the circulating cooling water; wherein, in order to ensure that dioxin in the fly ash is not synthesized again in the water cooling process, high-purity nitrogen is introduced into the water-cooling screw conveyor, and the oxygen-insulated environment is ensured.
Further, the fly ash pyrolysis device for harmless disposal of the waste incineration fly ash also comprises a flue gas purification device 20; the flue gas purification device is used for purifying pyrolysis gas generated by the flying ash spiral auger anaerobic pyrolysis component. Pyrolysis gas is led out by a pyrolysis gas induced draft fan from the upper-level spiral auger element and the lower-level spiral auger element after passing through the flue gas purification device and is discharged to a chimney. The incineration flue gas is led out by an incineration flue gas induced draft fan after being cooled and is discharged to a chimney.
The utility model also provides a fly ash pyrolysis system for harmless treatment of waste incineration fly ash, comprising the fly ash pyrolysis device for harmless treatment of waste incineration fly ash.
Based on example 1, the process used in the present invention comprises the following steps:
s1, maintaining the temperature in the pyrolysis heating chamber within a set interval of 200-400 ℃ through a burner;
s2, a fly ash spiral auger anaerobic pyrolysis component (pyrolysis device) which mainly takes fly ash spiral stirring is arranged in the pyrolysis heating chamber, and heat is transferred to the waste incineration fly ash in the pyrolysis heating chamber through wall surface heat transfer. The fly ash screw auger anaerobic pyrolysis component carries out anaerobic decomposition on the waste incineration fly ash in a pyrolysis heating chamber to obtain dioxin, the concentration of the dioxin in the fly ash is reduced to below 50ng-TEQ/kg, and the anaerobic atmosphere of the fly ash is maintained by introducing high-purity nitrogen into the fly ash screw auger anaerobic pyrolysis component;
s3, nitrogen is introduced into the pyrolysis heating chamber to maintain the anaerobic atmosphere of the pyrolysis device, a part of nitrogen carries pyrolysis gas out of the pyrolysis device in the process, and NH is contained in the pyrolysis gas3、NOxPollutants such as dioxins;
s4, purifying the pyrolysis gas through a flue gas purification device to ensure that the flue gas emission meets the emission standard;
s5, cooling the fly ash after removing the dioxin by water cooling and filling nitrogen to insulate oxygen, so that the dioxin can be directly quenched from high temperature to below 50 ℃, and the dioxin can be effectively prevented from being synthesized again in an oxygen-insulated environment;
through step S1 to stepS5 reduces the concentration of dioxin in the waste incineration fly ash to 50ng-TEQ/kg, and simultaneously the flue gas purification device controls the emission concentration of the dioxin in the waste gas to 0.1ng-TEQ/Nm3The following.
The method can decompose the dioxin in the waste incineration fly ash at low temperature, and has the characteristics of energy consumption saving, cost saving, continuous and stable operation and capability of effectively reducing the discharge of pollutants; the utility model can reduce the concentration of dioxin in waste incineration fly ash to 50ng-TEQ/kg, and simultaneously can reduce the emission concentration of dioxin in waste gas to less than 0.1ng-TEQ/Nm3(ii) a According to the utility model, dioxin in the waste incineration fly ash is decomposed at low temperature, an anaerobic atmosphere can be realized, the oxygen content can be reduced to below 1%, and the independent smoke chamber structure can effectively control the pyrolysis temperature of the fly ash to reach the optimal pyrolysis temperature.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (9)
1. A fly ash pyrolysis device for harmless disposal of waste incineration fly ash is characterized by comprising a pyrolysis heating chamber, a fly ash spiral auger anaerobic pyrolysis component, a water-cooling spiral conveyor, a pyrolysis gas induced draft fan and an incineration flue gas induced draft fan, wherein the fly ash spiral auger anaerobic pyrolysis component is arranged in the pyrolysis heating chamber; the discharge hole of the fly ash spiral auger anaerobic pyrolysis component is connected with the feed inlet of the water-cooling spiral conveyor; the pyrolysis gas induced draft fan is used for leading out pyrolysis gas generated by the fly ash spiral auger anaerobic pyrolysis component and discharging the pyrolysis gas; the incineration flue gas draught fan is used for leading out incineration flue gas generated in the pyrolysis heating chamber and discharging the incineration flue gas.
2. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 1, wherein the pyrolysis heating chamber comprises an upper stage pyrolysis heating chamber a and a lower stage pyrolysis heating chamber B; the upper stage pyrolysis heating chamber A is positioned above the lower stage pyrolysis heating chamber B; the upper stage pyrolysis heating chamber A and the lower stage pyrolysis heating chamber B both comprise two independent smoke chambers; each independent smoke chamber is provided with a burner; the burner controls the pyrolysis temperature of the fly ash in sections by adjusting the temperature.
3. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 2, wherein the fly ash spiral auger anaerobic pyrolysis component comprises an upper level spiral auger element and a lower level spiral auger element; the feed opening of the upper-level spiral auger element is connected with the feed opening of the lower-level spiral auger element; spiral reamer is arranged in the upper spiral auger element and the lower spiral auger element; the middle part of the upper spiral auger element is positioned in the upper pyrolysis heating chamber A; the middle part of the lower spiral auger element is positioned in the lower pyrolysis heating chamber B.
4. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 1, further comprising a fly ash surge bin; the fly ash buffer bin comprises a primary buffer bin and a secondary buffer bin; after being buffered by the primary buffer bin, the fly ash enters a secondary buffer bin and is then sent into a fly ash spiral auger anaerobic pyrolysis component for pyrolysis; high-purity nitrogen is introduced into the primary buffer bin; and a dust remover is also arranged in the primary buffer bin.
5. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 1, further comprising a fly ash silo pump; and the fly ash discharging bin pump is used for conveying fly ash conveyed by the water-cooled screw conveyor.
6. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 1, further comprising a flue gas purification device; the flue gas purification device is used for purifying pyrolysis gas generated by the flying ash spiral auger anaerobic pyrolysis component.
7. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 1, wherein a jacket is provided outside the water-cooled screw conveyor, circulating cooling inlet water enters the jacket from the tail end of the water-cooled screw conveyor, and circulating cooling return water exits the jacket from the front end of the water-cooled screw conveyor; and high-purity nitrogen is introduced into the water-cooled screw conveyer.
8. The fly ash pyrolysis device for harmless disposal of waste incineration fly ash according to claim 1, wherein the oxygen content in the fly ash spiral auger anaerobic pyrolysis component is lower than 1%, and the temperature is 200-400 ℃; the preheating temperature of the upper pyrolysis heating chamber A is 200-250 ℃, and the heat preservation temperature of the lower pyrolysis heating chamber B is 250-400 ℃.
9. A fly ash pyrolysis system for harmless disposal of waste incineration fly ash, comprising the fly ash pyrolysis apparatus for harmless disposal of waste incineration fly ash according to any one of claims 1 to 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042736A (en) * | 2021-10-09 | 2022-02-15 | 浙江京兰环保科技有限公司 | Fly ash pyrolysis device and system for harmless disposal of waste incineration fly ash |
| CN114602955A (en) * | 2022-05-11 | 2022-06-10 | 山东产研绿洲环境产业技术研究院有限公司 | Continuous carbon fiber regeneration device, system and method |
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2021
- 2021-10-09 CN CN202122426263.7U patent/CN216175283U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114042736A (en) * | 2021-10-09 | 2022-02-15 | 浙江京兰环保科技有限公司 | Fly ash pyrolysis device and system for harmless disposal of waste incineration fly ash |
| CN114602955A (en) * | 2022-05-11 | 2022-06-10 | 山东产研绿洲环境产业技术研究院有限公司 | Continuous carbon fiber regeneration device, system and method |
| CN114602955B (en) * | 2022-05-11 | 2022-07-26 | 山东产研绿洲环境产业技术研究院有限公司 | Continuous carbon fiber regeneration device, system and method |
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