CN219630846U - Environment-friendly comprehensive treatment device for fly ash molten tail gas - Google Patents
Environment-friendly comprehensive treatment device for fly ash molten tail gas Download PDFInfo
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- CN219630846U CN219630846U CN202321343294.9U CN202321343294U CN219630846U CN 219630846 U CN219630846 U CN 219630846U CN 202321343294 U CN202321343294 U CN 202321343294U CN 219630846 U CN219630846 U CN 219630846U
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- Prior art keywords
- pipeline
- tower
- tail gas
- fly ash
- dust
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- 239000010881 fly ash Substances 0.000 title claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000428 dust Substances 0.000 claims abstract description 37
- 238000002844 melting Methods 0.000 claims abstract description 37
- 230000008018 melting Effects 0.000 claims abstract description 37
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims abstract description 34
- 238000010791 quenching Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 230000000171 quenching effect Effects 0.000 claims abstract description 31
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 23
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 18
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 18
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000889 atomisation Methods 0.000 claims abstract description 8
- 230000004927 fusion Effects 0.000 claims description 14
- 239000004744 fabric Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims 9
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 37
- 229910001385 heavy metal Inorganic materials 0.000 description 7
- 239000002253 acid Substances 0.000 description 4
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 3
- 150000002013 dioxins Chemical class 0.000 description 3
- 239000010813 municipal solid waste Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides an environment-friendly comprehensive treatment device for fly ash molten tail gas, which has compact layout, simple equipment and simple running operation, and can simultaneously complete comprehensive treatment of various pollutants in the molten tail gas. The melting tail gas pipeline is connected with the quenching tower; the quenching water tank is connected with a cooling pump, and the cooling pump is connected with the quenching tower through an atomization pipeline; the compressed air pipeline is connected with the atomization pipeline; the quenching tower is connected with a bag-type dust remover which is connected with a melting fan; the melting fan is connected with the dry method tower; the baking soda storage device is connected with the dry method tower; the dry tower is connected with the dust-nitrate integrated equipment through a dry tower outlet pipeline; the active carbon storage device is connected with an outlet pipeline of the dry method tower; the ammonia water storage device is connected with an outlet pipeline of the dry method tower; the dust and nitrate integrated equipment is connected with the induced draft fan; the tail gas exhaust pipeline is connected with an induced draft fan.
Description
Technical Field
The utility model relates to an environment-friendly comprehensive treatment device for fly ash molten tail gas, and belongs to the field of solid waste treatment.
Background
Household garbage incineration has become a main disposal mode of household garbage because of the remarkable advantages of reduction, harmlessness and recycling. Fly ash generated in the incineration process of household garbage is mainly buried in the form of chelating agent and cement, occupies a large amount of land resources, and the dissolved matters have secondary pollution to the environment. At present, the treatment capacity and the production capacity of the fly ash in China are unbalanced, and an efficient recycling and harmless fly ash treatment method is needed. The melting treatment of the fly ash is a fly ash treatment mode which is actively promoted in developed countries, and is the only fly ash treatment mode which can remove heavy metals and persistent organic pollutants through heavy metal solidification and dioxin pyrolysis at present.
The fly ash melting technology can effectively remove dioxin, heavy metals and other substances, but partial pollutants are melted, gasified, decomposed and the like and discharged again along with the tail gas, SO that secondary pollution such as HCl and SO is formed 2 Heavy metals, dioxins, NOx, etc., and therefore, it is necessary to purify the molten exhaust gas before it is discharged into the atmosphere.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides the environment-friendly comprehensive treatment device for the fly ash molten tail gas, which has reasonable structural design, compact layout, simple equipment and simple running operation, and can simultaneously complete comprehensive treatment of various pollutants in the molten tail gas.
The utility model solves the problems by adopting the following technical scheme: an environment-friendly comprehensive treatment device for fly ash molten tail gas is characterized in that: comprises a cooling system, a pre-dedusting system, a deacidification system, an active carbon injection system and a dust and nitrate integrated system; the cooling system comprises a melting tail gas pipeline, a quenching tower, a quenching water tank, a cooling pump, an atomization pipeline and a compressed air pipeline; the pre-dedusting system comprises a cloth bag deduster and a fusion blower; the deacidification system comprises a dry tower and a baking soda storage device; the activated carbon injection system comprises an activated carbon storage device; the dust and nitrate integrated system comprises an ammonia water storage device, a dry method tower outlet pipeline, dust and nitrate integrated equipment, an induced draft fan and a tail gas exhaust pipeline; the melting tail gas pipeline is connected with the quenching tower; the quenching water tank is connected with a cooling pump, and the cooling pump is connected with the quenching tower through an atomization pipeline; the compressed air pipeline is connected with the atomization pipeline; the quenching tower is connected with a bag-type dust remover which is connected with a melting fan; the melting fan is connected with the dry method tower; the baking soda storage device is connected with the dry method tower; the dry tower is connected with the dust-nitrate integrated equipment through a dry tower outlet pipeline; the active carbon storage device is connected with an outlet pipeline of the dry method tower; the ammonia water storage device is connected with an outlet pipeline of the dry method tower; the dust and nitrate integrated equipment is connected with the induced draft fan; the tail gas exhaust pipeline is connected with an induced draft fan.
The cooling system also comprises a cooling pump inlet pipeline, and the quenching water tank is connected with the cooling pump through the cooling pump inlet pipeline.
The bottom of the quenching tower is provided with a fly ash collecting port and an inspection manhole.
The pre-dedusting system also comprises a cloth bag dedusting inlet pipeline, a melting fan inlet pipeline and a melting fan outlet pipeline, wherein the quenching tower is connected with a cloth bag deduster through the cloth bag dedusting inlet pipeline, and the cloth bag deduster is connected with the melting fan through the melting fan inlet pipeline; the melting fan is connected with the dry method tower through an outlet pipeline of the melting fan.
The deacidification system also comprises a baking soda conveying pipeline, and the baking soda storage device is connected with the dry tower through the baking soda conveying pipeline.
The active carbon spraying system also comprises an active carbon conveying pipeline;
the dust and nitrate integrated system also comprises an active carbon conveying pipeline, an ammonia water conveying pipeline and a tail gas purifying pipeline; the active carbon storage device is connected with an outlet pipeline of the dry method tower through an active carbon conveying pipeline; the ammonia water storage device is connected with an outlet pipeline of the dry method tower through an ammonia water conveying pipeline; the dust and nitrate integrated equipment is connected with the induced draft fan through a tail gas purifying pipeline.
The bottom of the dust and nitrate integrated equipment is provided with a dust collection and recycling device.
The cooling pump of the utility model adopts a variable frequency pump.
The melting fan adopts a centrifugal fan.
Compared with the prior art, the utility model has the following advantages and effects:
(1) The temperature reduction system can rapidly reduce the temperature of the molten tail gas to be within a safe interval range, and provides a guarantee for the operation of a subsequent system.
(2) The pre-dedusting system can recycle the escaped and cooled fly ash and purify the molten tail gas in advance.
(3) The deacidification system can deeply treat HCl and SO 2 And (3) acid gas is treated to control the concentration of the acid gas within the emission standard range.
(4) The active carbon spraying system is used in a superposition way, so that heavy metals, dioxins and other organic matters in the tail gas can be fully adsorbed and treated.
(5) The dust and nitrate integrated system can simultaneously remove the nitrate and dust, so that the molten tail gas is sufficiently purified and treated.
(6) The utility model has compact layout, simple equipment and simple running operation, and can simultaneously complete the comprehensive treatment of various pollutants in the molten tail gas.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present utility model and not limited to the following examples.
The embodiment of the utility model comprises a cooling system, a pre-dedusting system, a deacidification system, an active carbon spraying system and a dust and nitrate integrated system.
The cooling system comprises a melting tail gas pipeline 1, a quenching tower 2, a quenching water tank 3, a cooling pump inlet pipeline 4, a cooling pump 5, an atomizing pipeline 6 and a compressed air pipeline 7. The molten tail gas flows from top to bottom in the quenching tower 2, and a fly ash collecting port and an inspection manhole are arranged at the bottom of the quenching tower 2. The melting tail gas pipeline 1 is connected with the top of the quenching tower 2; the quench water tank 3 is connected to a cooling pump 5 via a cooling pump inlet line 4, and the cooling pump 5 is connected to the quench tower 2 via an atomizing line 6. A compressed air line 7 is connected to the atomizing line 6. The cooling pump 5 adopts a variable frequency pump and is interlocked with the temperature measuring point at the outlet of the quenching tower 2. The melting tail gas pipeline 1 and the quenching tower 2 are both provided with external heat insulation.
The pre-dedusting system comprises a cloth bag dedusting inlet pipeline 8, a cloth bag deduster 9, a fusion blower inlet pipeline 10, a fusion blower 11 and a fusion blower outlet pipeline 12. The quenching tower 2 is connected with a bag-type dust remover 9 through a bag-type dust removal inlet pipeline 8, and the bag-type dust remover 9 is connected with a melting fan 11 through a melting fan inlet pipeline 10. The bottom of the bag-type dust collector 9 is provided with an ash collecting device, and the collected fly ash is continuously sent into a melting device. The melt fan 11 is a centrifugal fan.
The deacidification system comprises a dry tower 13, a baking soda storage device 19 and a baking soda transfer line 20. The baking soda storage device is provided with a baking soda storage bin, a metering system, a grinder and a blower. The baking soda warehouse, the metering system, the grinder and the blower are arranged from top to bottom. The melting fan 11 is connected with the dry method tower 13 through a melting fan outlet pipeline 12; the baking soda storage 19 is connected to the dry tower 13 via a baking soda transfer line 20. The molten tail gas flows from top to bottom in the dry tower 13 to finish HCl and SO 2 And (3) removing the acid gas.
The activated carbon injection system includes an activated carbon storage device 21 and an activated carbon delivery line 22. The activated carbon storage device 21 is provided with an activated carbon storage bin, a temperature alarm, a metering system and a blower, and the activated carbon storage bin, the metering system and the blower are arranged from top to bottom. The activated carbon can fully adsorb and treat heavy metals, dioxin and other organic matters in the tail gas.
The dust and nitrate integrated system comprises an ammonia water storage device 23, an ammonia water conveying pipeline 24, a dry tower outlet pipeline 14, dust and nitrate integrated equipment 15, a tail gas purifying pipeline 16, an induced draft fan 17 and a tail gas discharging pipeline 18. The ammonia water storage device 23 is provided with an ammonia water storage tank, an ammonia leakage alarm and an ammonia water metering pump. The dry tower 13 is connected with the dust and nitrate integrated equipment 15 through a dry tower outlet pipeline 14; the active carbon storage device 21 is connected with the dry method tower outlet pipeline 14 through an active carbon conveying pipeline 22; the ammonia water storage device 23 is connected with the dry method tower outlet pipeline 14 through an ammonia water conveying pipeline 24; the dust and nitrate integrated equipment 15 is connected with an induced draft fan 17 through a tail gas purifying pipeline 16; the tail gas exhaust pipeline 18 is connected with the induced draft fan 17. The dust and nitrate integrated equipment 15 is provided with a dust collection and recycling device at the bottom, and the induced draft fan 17 is a centrifugal fan. Dust and nitrogen oxides in the molten tail gas can be controlled within the emission standard range through the dust and nitrogen integrated equipment 15.
The working mode of the utility model is as follows:
the high-temperature tail gas enters a cooling system from the fly ash melting device and is cooled to be within a safe interval range under the action of the quenching tower 2. The fly ash which escapes and is cooled down is recovered through a cloth bag dust remover 9, and the tail gas is primarily purified. Then enters a dry tower 13 under the action of a melting blower 11 to finish the deacidification process, and remove HCl and SO 2 And acid gases. Further, heavy metals, dioxins and other organic matters in the tail gas are removed in the dry tower outlet pipeline 14 through the absorption effect of the activated carbon. Finally, the dual functions of denitration and dust removal are completed through the dust-nitrate integrated equipment 15, so that the molten tail gas meets the emission requirement.
In addition, it should be noted that the specific embodiments described in the present specification may vary from part to part, from name to name, etc., and the above description in the present specification is merely illustrative of the structure of the present utility model. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. An environment-friendly comprehensive treatment device for fly ash molten tail gas is characterized in that: comprises a cooling system, a pre-dedusting system, a deacidification system, an active carbon injection system and a dust and nitrate integrated system; the cooling system comprises a melting tail gas pipeline, a quenching tower, a quenching water tank, a cooling pump, an atomization pipeline and a compressed air pipeline; the pre-dedusting system comprises a cloth bag deduster and a fusion blower; the deacidification system comprises a dry tower and a baking soda storage device; the activated carbon injection system comprises an activated carbon storage device; the dust and nitrate integrated system comprises an ammonia water storage device, a dry method tower outlet pipeline, dust and nitrate integrated equipment, an induced draft fan and a tail gas exhaust pipeline; the melting tail gas pipeline is connected with the quenching tower; the quenching water tank is connected with a cooling pump, and the cooling pump is connected with the quenching tower through an atomization pipeline; the compressed air pipeline is connected with the atomization pipeline; the quenching tower is connected with a bag-type dust remover which is connected with a melting fan; the melting fan is connected with the dry method tower; the baking soda storage device is connected with the dry method tower; the dry tower is connected with the dust-nitrate integrated equipment through a dry tower outlet pipeline; the active carbon storage device is connected with an outlet pipeline of the dry method tower; the ammonia water storage device is connected with an outlet pipeline of the dry method tower; the dust and nitrate integrated equipment is connected with the induced draft fan; the tail gas exhaust pipeline is connected with an induced draft fan.
2. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the cooling system also comprises a cooling pump inlet pipeline, and the quenching water tank is connected with the cooling pump through the cooling pump inlet pipeline.
3. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the bottom of the quenching tower is provided with a fly ash collecting port and an inspection manhole.
4. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the pre-dedusting system also comprises a cloth bag dedusting inlet pipeline, a melting fan inlet pipeline and a melting fan outlet pipeline, the quenching tower is connected with a cloth bag deduster through the cloth bag dedusting inlet pipeline, and the cloth bag deduster is connected with the melting fan through the melting fan inlet pipeline; the melting fan is connected with the dry method tower through an outlet pipeline of the melting fan.
5. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the deacidification system also comprises a baking soda conveying pipeline, and the baking soda storage device is connected with the dry tower through the baking soda conveying pipeline.
6. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the activated carbon injection system also comprises an activated carbon conveying pipeline.
7. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the dust and nitrate integrated system also comprises an active carbon conveying pipeline, an ammonia water conveying pipeline and a tail gas purifying pipeline; the active carbon storage device is connected with an outlet pipeline of the dry method tower through an active carbon conveying pipeline; the ammonia water storage device is connected with an outlet pipeline of the dry method tower through an ammonia water conveying pipeline; the dust and nitrate integrated equipment is connected with the induced draft fan through a tail gas purifying pipeline.
8. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the bottom of the dust and nitrate integrated equipment is provided with a dust collection and recycling device.
9. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the cooling pump adopts a variable frequency pump.
10. The fly ash fusion tail gas environmental protection comprehensive treatment device according to claim 1, wherein: the melting fan adopts a centrifugal fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321343294.9U CN219630846U (en) | 2023-05-30 | 2023-05-30 | Environment-friendly comprehensive treatment device for fly ash molten tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321343294.9U CN219630846U (en) | 2023-05-30 | 2023-05-30 | Environment-friendly comprehensive treatment device for fly ash molten tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219630846U true CN219630846U (en) | 2023-09-05 |
Family
ID=87817993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321343294.9U Active CN219630846U (en) | 2023-05-30 | 2023-05-30 | Environment-friendly comprehensive treatment device for fly ash molten tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219630846U (en) |
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2023
- 2023-05-30 CN CN202321343294.9U patent/CN219630846U/en active Active
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