CN109078961B - Flue gas quenching device for waste incineration fly ash heat treatment process - Google Patents
Flue gas quenching device for waste incineration fly ash heat treatment process Download PDFInfo
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- CN109078961B CN109078961B CN201810984698.3A CN201810984698A CN109078961B CN 109078961 B CN109078961 B CN 109078961B CN 201810984698 A CN201810984698 A CN 201810984698A CN 109078961 B CN109078961 B CN 109078961B
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- pipeline
- temperature
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- quenching
- conical
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- 238000010791 quenching Methods 0.000 title claims abstract description 91
- 230000000171 quenching effect Effects 0.000 title claims abstract description 59
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003546 flue gas Substances 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 239000010881 fly ash Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004056 waste incineration Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000005260 corrosion Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 9
- 238000009825 accumulation Methods 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 229910001510 metal chloride Inorganic materials 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- RPAJSBKBKSSMLJ-DFWYDOINSA-N (2s)-2-aminopentanedioic acid;hydrochloride Chemical class Cl.OC(=O)[C@@H](N)CCC(O)=O RPAJSBKBKSSMLJ-DFWYDOINSA-N 0.000 description 1
- 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 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/30—Incineration ashes
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention discloses a flue gas quenching device for a waste incineration fly ash heat treatment process, wherein a high-temperature pipeline extends into a conical pipeline of a quenching tower, and the lower port of the high-temperature pipeline is arranged at the junction of the conical pipeline and a straight pipeline of the quenching tower; a high-temperature equipment flange is sleeved outside the high-temperature pipeline, a quenching device flange is fixedly connected to the upper end face of the conical pipeline of the quenching tower, and the quenching tower and the high-temperature pipeline are connected with the quenching device flange through the high-temperature equipment flange; the side wall of the high-temperature pipeline is provided with a heating burner which is arranged above the flange of the high-temperature equipment; the peripheral wall of the conical pipe is uniformly provided with a circulating liquid cyclone interface which is arranged above the lower port of the high-temperature pipeline, circulating water enters the conical pipe through the circulating liquid cyclone interface and forms a uniform liquid film on the inner wall surface of the quench tower; the straight pipeline side wall of the quenching tower is provided with a double-fluid nozzle. The invention solves the problem that the pipe orifice is blocked by salt accumulation at the joint of the high-temperature pipeline and the quench tower.
Description
Technical Field
The invention relates to waste incineration fly ash heat treatment equipment, in particular to a flue gas quenching device for a waste incineration fly ash heat treatment process.
Background
Because the waste incineration fly ash contains a large amount of chlorides, high-temperature flue gas generated by an incineration disposal system according to HJ2042-2014 hazardous waste disposal engineering technical guide rules is treated by rapid cooling, the temperature of the flue gas is reduced to be below 200 ℃ within 1s, the residence time of the flue gas in a temperature area of 200-500 ℃ is reduced, and secondary generation of dioxin is prevented. Therefore, the fly ash heat treatment process needs to be provided with a quenching device.
The existing fly ash heat treatment process uses quench tower equipment as shown in figure 1, and the quench device is connected with high temperature flue gas section equipment through a pipeline, because the flue gas contains a large amount of chloride and the melting point of the chloride is about 800 ℃, when a low temperature zone exists between the high temperature flue gas section and the transition section of the quench equipment, salt condensation occurs in the high temperature connecting pipeline, so that the equipment or the pipeline is blocked, and the process can not run normally.
Disclosure of Invention
In order to solve the technical problem, the invention provides a flue gas quenching device for a waste incineration fly ash heat treatment process. The device directly allies oneself with high temperature flue gas section, and high temperature flue gas section export sets up the combustor and avoids transition section low temperature setting salt to block up the quench tower entry, and the quench tower sets up the water-cooling wall simultaneously, can avoid high temperature flue gas corrosion high temperature pipeline, reduces the risk of metal chloride condensation wall face simultaneously.
The technical scheme of the invention is as follows: a flue gas quenching device for a waste incineration fly ash heat treatment process comprises a quenching tower, a high-temperature pipeline, a high-temperature equipment flange, a quenching device flange, a heating burner, a circulating liquid cyclone interface, a circulating water pipe, a liquid film, a circulating water regulating valve and a double-fluid nozzle, wherein the quenching tower is divided into an upper conical pipeline and a lower straight pipeline, the inner diameter of the lower port of the conical pipeline of the quenching tower is slightly larger than the outer diameter of the high-temperature pipeline, the high-temperature pipeline extends into the conical pipeline of the quenching tower, and the lower port of the high-temperature pipeline is arranged at the junction of the conical pipeline and the straight pipeline of the; a high-temperature equipment flange is sleeved outside the high-temperature pipeline, a quenching device flange is fixedly connected to the upper end face of the conical pipeline of the quenching tower, and the quenching tower and the high-temperature pipeline are connected with the quenching device flange through the high-temperature equipment flange; the side wall of the high-temperature pipeline is provided with a heating burner which is arranged above the flange of the high-temperature equipment; the peripheral wall of the conical pipe is uniformly provided with a circulating liquid cyclone interface which is arranged above the lower port of the high-temperature pipeline, circulating water enters the conical pipe through the circulating liquid cyclone interface and forms a uniform liquid film on the inner wall surface of the quench tower; the straight pipeline side wall of the quenching tower is provided with a double-fluid nozzle.
Furthermore, the number of the two-fluid nozzles is 1-N.
Further, the two-fluid nozzle is arranged below the lower port of the high-temperature pipeline,
further, the two-fluid nozzle sleeve is provided with an air protection sleeve, and the injection angle of the two-fluid nozzle is 15 degrees.
Furthermore, a circulating water regulating valve is arranged on the circulating water pipe, and the thickness of the liquid film is controlled through the circulating water regulating valve.
Furthermore, the conical pipeline of the quenching tower is made of high-temperature corrosion-resistant alloy materials.
Further, the pipeline of the high-temperature pipeline extending to the quenching tower is coated with a material resistant to wet chlorine corrosion.
Further, the inner wall of the high-temperature pipeline is coated with a high-temperature equipment refractory material.
Furthermore, the straight pipeline of the quenching tower is made of non-metallic materials.
The invention has the beneficial effects that: the invention cancels the connecting pipeline of the high-temperature pipeline and the quench tower, changes the connecting mode into a direct plug-in type, and solves the material selection problem of the high-temperature flue gas entering the connecting section of the quench device; a heating burner is arranged at the outlet of the high-temperature pipeline, and the problem that the pipe orifice is blocked by salt deposition at the joint of the high-temperature pipeline and the quench tower is solved by periodically starting the heating burner; the circulating liquid cyclone interface arranged on the quenching tower forms a liquid film on the inner wall of the quenching tower through circulating water, so that high-temperature flue gas can be prevented from corroding a high-temperature pipeline, and the risk of a metal chloride salt condensation wall surface is reduced; the two-fluid nozzle is adopted to reduce the temperature of the flue gas to be below 100 ℃, and the straight pipeline of the quenching tower can be made of non-metallic corrosion-resistant materials, so that the cost is greatly reduced.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic view of a prior art structure.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the invention.
As shown in figure 2, the flue gas quenching device for the waste incineration fly ash heat treatment process comprises a quenching tower 1, a high-temperature pipeline 2, a high-temperature equipment flange 3, a quenching device flange 4, a heating burner 5, a circulating liquid cyclone interface 6, a circulating water pipe 7, a liquid film 8, a circulating water regulating valve 9 and a two-fluid nozzle 10.
The quenching tower 1 is divided into an upper conical pipeline 101 and a lower straight pipeline 102, and the conical pipeline 101 of the quenching tower 1 is made of high-temperature corrosion-resistant alloy. The internal diameter of port is slightly greater than high temperature pipeline 2's external diameter under the conical conduit 101 of quench tower 1, and the lower part setting of high temperature pipeline 2 is in the conical conduit 101 of quench tower 1, and the lower port setting of high temperature pipeline 2 is in the conical conduit 101 and the straight tube way 102 juncture of quench tower 1, and high temperature flue gas directly gets into in quench tower 1, makes and avoids the flue gas cooling to lead to junction long-pending salt to block up between the conical conduit 101 of high temperature pipeline 2 and quench tower 1.
The high temperature equipment flange 3 is sleeved outside the high temperature pipeline 2, and the high temperature equipment flange 3 is installed at a position 500mm away from the upper part of the lower port of the high temperature pipeline 2, namely the length of the high temperature pipeline 2 extending into the conical pipeline 101 of the quench tower 1 is 500 mm. Quench tower 1's conical conduit 101's up end fixedly connected with quench fitting flange 4, high temperature equipment flange 3 and quench fitting flange 4 bolted connection, quench tower 1 and high temperature pipeline 2 pass through high temperature equipment flange 3 and are connected with quench fitting flange 4, adopt flange joint mode sealed.
The lateral wall of high temperature pipeline 2 is provided with heating nozzle 5, and heating nozzle 5 sets up in the top of high temperature equipment flange 3, and the long-pending salt phenomenon of low temperature appears easily in the changeover portion of high temperature pipeline 2 and quench tower 1, needs regularly to carry out the heat treatment to the fused salt in the high temperature pipeline 2, when avoiding the flue gas to pass through the transition region of quench tower 1 with high temperature pipeline 2, and the entry of quench tower 1 is blockked up to the low temperature coagulated salt. The pipeline extending from the high-temperature pipeline 2 to the quenching tower 1 is covered by a wet chlorine corrosion resistant material. The inner wall of the high-temperature pipeline 2 is coated with a high-temperature equipment refractory 201.
The wall all around of conical duct 101 evenly opens circulation liquid whirl interface 6, circulation liquid whirl interface 6 sets up the top at the lower port of high temperature pipeline 2, the mouth of pipe of circulating water pipe 7 sets up in circulation liquid whirl interface 6 department, the circulating water is in circulating water pipe 7 gets into conical duct 101 through circulation liquid whirl interface 6, the circulating water flows down along the inner wall of quench tower 1 between the gap between the inner wall of conical duct 101 and the outer wall of high temperature pipeline 2, form even liquid film 8 on the internal face of quench tower 1. The liquid film 8 can prevent the high-temperature corrosion and high-temperature salt deposition on the inner wall of the cooling tower 1. When the amount of circulating water is about 4.2Nm3The thickness of the liquid film 8 is about 3 to 5mm at the time of the hour. And a circulating water regulating valve 9 is arranged on the circulating water pipe 7, and the thickness of the liquid film 8 is controlled by the circulating water regulating valve 9.
According to the air input of the flue gas, 1-N two-fluid nozzles 10 are reasonably arranged on the side wall of a straight pipeline 102 of the quenching tower 1, and the two-fluid nozzles 10 are adopted to reduce the temperature of the flue gas and achieve the adiabatic heat exchange saturation temperature. In the present invention, the two-fluid nozzle 10 is disposed 200mm below the lower port of the high-temperature pipe 2. The double-fluid nozzle 5 is used for spraying water to reduce the temperature, so that the flue gas is reduced to be below the saturation temperature, and the requirement of the subsequent process on purification equipment is reduced. The two-fluid nozzle 10 is made of a high-temperature-resistant nickel-based alloy material, and has the capabilities of effectively resisting moisture and chlorine, resisting mixed acid containing chloride ions, and resisting pitting corrosion and crevice corrosion.
The two-fluid nozzle 10 is protected by an air protective sleeve, the spraying angle of the two-fluid nozzle 10 is 15 degrees, and the atomization grain diameter of the two-fluid nozzle 10 is smaller than 100 microns. After entering the straight pipeline 102 of the quench tower 1, the flue gas contacts with atomized particles generated by the two-fluid nozzle 10 to exchange heat and reduce the temperature to about 88 ℃ of saturation temperature, and the two-fluid nozzle 10 can prevent the high-temperature flue gas from corroding the straight pipeline 102 of the quench tower 1 and reduce the risk of the metal chloride condensing the inner wall surface of the straight pipeline 102 of the quench tower 1. The straight pipeline 102 of the quenching tower 1 is made of non-metallic materials, so that the corrosion of acid and chloride is effectively reduced, and the cost is effectively reduced.
The straight pipe 102 of the quenching tower 1 has a diameter of 1000 mm.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (7)
1. A flue gas quenching device for a waste incineration fly ash heat treatment process is characterized in that: the quenching tower comprises a quenching tower, a high-temperature pipeline, a high-temperature equipment flange, a quenching device flange, a heating burner, a circulating liquid swirl interface, a circulating water pipe, a liquid film, a circulating water regulating valve and a double-fluid nozzle, wherein the quenching tower is divided into an upper conical pipeline and a lower straight pipeline, the inner diameter of the lower port of the conical pipeline of the quenching tower is slightly larger than the outer diameter of the high-temperature pipeline, the high-temperature pipeline extends into the conical pipeline of the quenching tower, and the lower port of the high-temperature pipeline is arranged at the junction of the conical pipeline and the straight pipeline of; a high-temperature equipment flange is sleeved outside the high-temperature pipeline, a quenching device flange is fixedly connected to the upper end face of the conical pipeline of the quenching tower, and the quenching tower and the high-temperature pipeline are connected with the quenching device flange through the high-temperature equipment flange; the side wall of the high-temperature pipeline is provided with a heating burner which is arranged above the flange of the high-temperature equipment; the peripheral wall of the conical pipe is uniformly provided with a circulating liquid cyclone interface which is arranged above the lower port of the high-temperature pipeline, circulating water enters the conical pipe through the circulating liquid cyclone interface and forms a uniform liquid film on the inner wall surface of the quench tower; a double-fluid nozzle is arranged on the side wall of a straight pipeline of the quenching tower; the pipeline extending from the high-temperature pipeline to the quenching tower is coated with a wet chlorine corrosion resistant material; and the inner wall of the high-temperature pipeline is coated with a high-temperature equipment refractory material.
2. The flue gas quenching device for the heat treatment process of the waste incineration fly ash as claimed in claim 1, wherein: the number of the two-fluid nozzles is 1-N.
3. The flue gas quenching device for the heat treatment process of the waste incineration fly ash as claimed in claim 2, wherein: the two-fluid nozzle is arranged below the lower port of the high-temperature pipeline.
4. The flue gas quenching device for the heat treatment process of the waste incineration fly ash as claimed in claim 3, wherein: the double-fluid nozzle sleeve is provided with an air protection sleeve, and the injection angle of the double-fluid nozzle is 15 degrees.
5. The flue gas quenching device for the heat treatment process of the waste incineration fly ash as claimed in claim 1, wherein: and the circulating water regulating valve is arranged on the circulating water pipe, and the thickness of the liquid film is controlled by the circulating water regulating valve.
6. The flue gas quenching device for the heat treatment process of the waste incineration fly ash as claimed in claim 1, wherein: the conical pipeline of the quenching tower is made of high-temperature corrosion-resistant alloy materials.
7. The flue gas quenching device for the heat treatment process of the waste incineration fly ash as claimed in claim 1, wherein: the straight pipeline of quench tower adopts non-metallic material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810984698.3A CN109078961B (en) | 2018-08-28 | 2018-08-28 | Flue gas quenching device for waste incineration fly ash heat treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810984698.3A CN109078961B (en) | 2018-08-28 | 2018-08-28 | Flue gas quenching device for waste incineration fly ash heat treatment process |
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| CN109078961A CN109078961A (en) | 2018-12-25 |
| CN109078961B true CN109078961B (en) | 2021-02-19 |
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| CN201810984698.3A Active CN109078961B (en) | 2018-08-28 | 2018-08-28 | Flue gas quenching device for waste incineration fly ash heat treatment process |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906751A (en) * | 2019-12-05 | 2020-03-24 | 中冶华天南京工程技术有限公司 | Electric furnace flue gas quenching device |
| CN113578921B (en) * | 2021-07-23 | 2023-12-26 | 四川广铭建设集团有限公司 | High-temperature pyrolysis process for municipal domestic waste |
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| CN205137506U (en) * | 2015-11-13 | 2016-04-06 | 李雪松 | A graphite quench tower for waste gas burns burning furnace |
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| CN108026460A (en) * | 2015-09-02 | 2018-05-11 | 西门子股份公司 | The water overflow without blocking in from the water jacket of quencher to shock chamber |
| CN209077414U (en) * | 2018-08-28 | 2019-07-09 | 江苏天楹环保能源成套设备有限公司 | A kind of incineration of refuse flyash heat treatment process rapid cooling device for fume |
-
2018
- 2018-08-28 CN CN201810984698.3A patent/CN109078961B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002350069A (en) * | 2001-05-30 | 2002-12-04 | Tetsuto Tamura | Quencher |
| CN108026460A (en) * | 2015-09-02 | 2018-05-11 | 西门子股份公司 | The water overflow without blocking in from the water jacket of quencher to shock chamber |
| CN205137506U (en) * | 2015-11-13 | 2016-04-06 | 李雪松 | A graphite quench tower for waste gas burns burning furnace |
| CN206234834U (en) * | 2016-11-05 | 2017-06-09 | 亚德（上海）环保系统有限公司 | Chilling tower |
| CN206621987U (en) * | 2017-04-06 | 2017-11-10 | 山东省环科院环境工程有限公司 | A kind of dangerous waste incineration flue gas purifying equipment |
| CN206861543U (en) * | 2017-05-10 | 2018-01-09 | 上海奕茂环境科技有限公司 | High-temperature flue gas waste heat recovery and the two segments combined device of chilling |
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| CN109078961A (en) | 2018-12-25 |
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