CN219955351U - Fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry - Google Patents
Fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry Download PDFInfo
- Publication number
- CN219955351U CN219955351U CN202321038125.4U CN202321038125U CN219955351U CN 219955351 U CN219955351 U CN 219955351U CN 202321038125 U CN202321038125 U CN 202321038125U CN 219955351 U CN219955351 U CN 219955351U
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- CN
- China
- Prior art keywords
- fluorine
- waste liquid
- absorption tower
- tower
- chemical industry
- Prior art date
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- 239000007788 liquid Substances 0.000 title claims abstract description 49
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 42
- 239000011737 fluorine Substances 0.000 title claims abstract description 42
- 239000002699 waste material Substances 0.000 title claims abstract description 31
- 239000002912 waste gas Substances 0.000 title claims abstract description 25
- 239000000126 substance Substances 0.000 title claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 45
- 238000010791 quenching Methods 0.000 claims abstract description 42
- 230000000171 quenching effect Effects 0.000 claims abstract description 36
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003546 flue gas Substances 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000885 Dual-phase steel Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910000856 hastalloy Inorganic materials 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 11
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000010525 oxidative degradation reaction Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000005201 scrubbing Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000004812 organic fluorine compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 silicon fluoride Chemical class 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
Abstract
The utility model provides a fluorine-containing waste liquid and waste gas incineration system suitable for the fluorine chemical industry, relates to the technical field of fluorine-containing waste liquid and waste gas treatment, and solves the problem that in the prior art, the system is frequently overhauled and is unstable due to pipeline blockage. The device comprises an incinerator, wherein an air inlet pipe of a quenching tank is communicated with an air outlet of the incinerator; the bottom air inlet of the absorption tower is communicated with the air outlet pipe of the quenching tank; the bottom air inlet of the washing tower is communicated with the top air outlet of the absorption tower, the top air outlet of the washing tower is connected with an induced draft fan, and the induced draft fan is connected with a chimney. Spraying fluorine-containing waste liquid/waste gas into an incinerator for oxidative degradation, introducing high-temperature flue gas generated after incineration into a quenching tank for rapid cooling, removing molten salt, introducing the cooled flue gas into an absorption tower for recycling hydrofluoric acid, then introducing into a washing tower for removing residual hydrofluoric acid in the flue gas, and discharging the deacidified flue gas from a chimney; the quenching tank removes molten salt, so that the molten salt is prevented from blocking a pipeline, and the running stability of the system is improved.
Description
Technical Field
The utility model relates to the technical field of treatment of fluorine-containing waste liquid and waste gas, in particular to a fluorine-containing waste liquid and waste gas incineration system suitable for the fluorine industry.
Background
A large amount of fluorine-containing waste liquid/waste gas is generated in the production operation of the fluorine chemical industry, and the main components are as follows: fluorinated hydrocarbons, fluorinated organic compounds such as silicon fluoride, and the like, and also contain a large amount of water. The traditional wastewater treatment method is difficult to thoroughly purify the waste liquid, and the current high-toxicity and high-corrosiveness waste liquid belongs to dangerous waste liquid and is generally treated by adopting an incineration method.
The existing waste liquid incineration technology achieves good effect in the application of treating fluorine-containing waste liquid incineration, but has the problems of pipeline blockage, serious equipment corrosion and unstable operation of frequent system overhaul.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide a fluorine-containing waste liquid/waste gas incineration system suitable for the fluorine chemical industry, wherein fluorine-containing waste liquid/waste gas is sprayed into an incinerator for oxidative degradation, high-temperature flue gas generated after incineration is introduced into a quenching tank for rapid cooling, molten salt is removed, cooled flue gas enters an absorption tower for recycling hydrofluoric acid, then enters a washing tower for removing residual hydrofluoric acid in the flue gas, and the deacidified flue gas is discharged from a chimney; the quenching tank removes molten salt, so that the molten salt is prevented from blocking a pipeline, and the running stability of the system is improved.
The embodiment of the utility model is realized by the following technical scheme:
a fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry comprises
An incinerator for incinerating waste liquid and waste gas;
the quenching tank is used for cooling the flue gas generated after incineration, and an air inlet pipe of the quenching tank is communicated with an air outlet of the incinerator;
the absorption tower is used for absorbing hydrofluoric acid in the flue gas, and an air inlet at the bottom of the absorption tower is communicated with an air outlet pipe of the quenching tank;
the washing tower is used for removing residual hydrofluoric acid in the flue gas, a bottom air inlet of the washing tower is communicated with a top air outlet of the absorption tower, a top air outlet of the washing tower is connected with an induced draft fan, and the induced draft fan is connected with a chimney.
Preferably, the shell of the incinerator is made of dual-phase steel or hastelloy, and the impeller and the shell of the induced draft fan are made of dual-phase steel.
Preferably, the air inlet pipe of the quenching tank is made of graphite.
Preferably, the air inlet pipe of the quenching tank extends to the position below the liquid level of the quenching liquid.
Preferably, the bottom of quench pot is connected with the drain pipe, the drain pipe is connected with first circulating pump, first circulating pump has first cooler through the pipe connection, first cooler is connected with the feed liquor pipe with the quench pot intercommunication, the quench pot is connected with recovery pipeline, be provided with first suction pump and second cooler on the recovery pipeline.
Preferably, the absorption tower and the washing tower are made of glass fiber reinforced plastic materials.
Preferably, the absorption tower is one of a bubble cap tower and a sieve plate tower.
Preferably, the absorption tower is provided with a two-stage spray structure, the spray structure at the upper part of the absorption tower adopts softened water as a spray medium, and the spray structure at the lower part of the absorption tower adopts dilute hydrofluoric acid absorption liquid as a spray medium.
Preferably, the spraying structure of absorption tower lower part has crude acid jar through the pipe connection, crude acid jar is connected with the second suction pump, the second suction pump is connected with the third cooler, the pipe connection between second suction pump and the third cooler has the honeycomb duct with the absorption tower intercommunication.
Preferably, the bottom of the washing tower is connected with a second circulating pump through a pipeline, and the second circulating pump is communicated with the upper end of the washing tower through a pipeline.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
spraying fluorine-containing waste liquid/waste gas into an incinerator for oxidative degradation, introducing high-temperature flue gas generated after incineration into a quenching tank for rapid cooling, removing molten salt, introducing the cooled flue gas into an absorption tower for recycling hydrofluoric acid, then introducing into a washing tower for removing residual hydrofluoric acid in the flue gas, and discharging the deacidified flue gas from a chimney; the quenching tank removes molten salt, so that the molten salt is prevented from blocking a pipeline, and the running stability of the system is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart provided in an embodiment of the present utility model;
icon: 1-an incinerator; 2-a quenching tank; 3-an absorption tower; 4-a washing tower; 5-induced draft fan; 6-chimney; 7-a combustion-supporting fan; 8-a first circulation pump; 9-a first cooler; 10-a first suction pump; 11-a second cooler; 12-a crude acid tank; 13-a second suction pump; 14-a third cooler; 15-a second circulation pump.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present utility model is described in detail below with reference to fig. 1.
Examples
A fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry comprises
An incinerator 1 for incinerating waste liquid and exhaust gas;
the quenching tank 2 is used for cooling the flue gas generated after incineration, and an air inlet pipe of the quenching tank 2 is communicated with an air outlet of the incinerator 1;
the absorption tower 3 is used for absorbing hydrofluoric acid in the flue gas, and an air inlet at the bottom of the absorption tower 3 is communicated with an air outlet pipe of the quenching tank 2;
the scrubbing tower 4 is used for removing residual hydrofluoric acid in the flue gas, a bottom air inlet of the scrubbing tower 4 is communicated with a top air outlet of the absorption tower 3, a top air outlet of the scrubbing tower 4 is connected with an induced draft fan 5, and the induced draft fan 5 is connected with a chimney 6.
The incinerator 1 is also connected with a combustion-supporting fan, and the combustion-supporting fan 7 supplements oxygen to the incinerator 1 to ensure sufficient combustion. The incinerator 1 is of a vertical structure, and molten salt can flow into the quenching tank 2 from the furnace wall conveniently.
Because hydrofluoric acid is highly corrosive, related structures employ corrosion resistant structures, such as: the shell of the incinerator 1 is made of dual-phase steel or hastelloy, and the impeller and the shell of the induced draft fan 5 are made of dual-phase steel; the air inlet pipe of the quenching tank 2 is made of graphite; the absorption tower 3 and the washing tower 4 are made of glass fiber reinforced plastic materials.
The air inlet pipe of the quenching tank 2 extends to the position below the liquid level of the quenching liquid. The flue gas after incineration can be rapidly cooled and molten salt is removed, so that the back-end equipment is protected.
The bottom of quench tank 2 is connected with the drain pipe, and the drain pipe is connected with first circulating pump 8, and first circulating pump 8 has first cooler 9 through the pipe connection, and first cooler 9 is connected with the feed liquor pipe with quench tank 2 intercommunication, carries out the circulative cooling to the coolant liquid in the quench tank 2 through setting up first cooler 9, has practiced thrift the use of water resource. The quenching tank 2 is connected with a recovery pipeline, a first suction pump 10 and a second cooler 11 are arranged on the recovery pipeline, the recovery pipeline can recover the acid in the quenching tank 2, and the second cooler 11 cools the recovered acid.
The absorption tower 3 is one of a bubble cap tower and a sieve plate tower, and the bubble cap tower and the sieve plate tower can absorb hydrogen fluoride in the flue gas to the greatest extent.
The absorption tower 3 is provided with a two-stage spray structure, and the spray structure at the upper part of the absorption tower 3 adopts softened water as a spray medium, and the spray structure at the lower part of the absorption tower 3 adopts dilute hydrofluoric acid absorption liquid as a spray medium.
The spray structure of absorption tower 3 lower part is connected with crude acid jar 12 through the pipeline, and crude acid jar 12 is connected with second suction pump 13, and second suction pump 13 is connected with third cooler 14, and the pipeline between second suction pump 13 and the third cooler 14 is connected with the honeycomb duct with absorption tower 3 intercommunication. The absorption liquid which does not fully absorb the acid is guided into the absorption tower 3 for recycling through the arrangement of the guide pipe, so that the utilization rate of the absorption liquid is increased, and after the absorption liquid fully absorbs the acid, the crude acid is recycled.
The absorption tower 3 is connected with a conduit which is communicated with the quenching tank 2, and part of water in the absorption tower 3 can be led into the quenching tank 2 for use so as to supplement the loss of cooling liquid of the quenching tank 2 and further improve the utilization rate of water resources.
The bottom of the washing tower 4 is connected with a second circulating pump 15 through a pipeline, and the second circulating pump 15 is communicated with the upper end of the washing tower 4 through a pipeline. The washing liquid is recycled by the second circulating pump 15, so that the use rate of the washing liquid is improved.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. Fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry, which is characterized by comprising
An incinerator (1) for incinerating waste liquid and waste gas;
the quenching tank (2) is used for cooling the flue gas generated after incineration, and an air inlet pipe of the quenching tank (2) is communicated with an air outlet of the incinerator (1);
the absorption tower (3) is used for absorbing hydrofluoric acid in the flue gas, and an air inlet at the bottom of the absorption tower (3) is communicated with an air outlet pipe of the quenching tank (2);
the washing tower (4) is used for removing residual hydrofluoric acid in flue gas, a bottom air inlet of the washing tower (4) is communicated with a top air outlet of the absorption tower (3), an induced draft fan (5) is connected with a top air outlet of the washing tower (4), and the induced draft fan (5) is connected with a chimney (6).
2. The fluorine-containing waste liquid and waste gas incineration system applicable to the fluorine chemical industry according to claim 1, wherein the shell of the incinerator (1) is made of dual-phase steel or hastelloy, and the impeller and the shell of the induced draft fan (5) are made of dual-phase steel.
3. The fluorine-containing waste liquid and waste gas incineration system applicable to the fluorine chemical industry according to claim 1, characterized in that the air inlet pipe of the quenching tank (2) is made of graphite.
4. The fluorine-containing waste liquid and waste gas incineration system applicable to the fluorine chemical industry according to claim 1, wherein an air inlet pipe of the quenching tank (2) extends to the position below the liquid level of the quenching liquid.
5. The fluorine-containing waste liquid and waste gas incineration system suitable for the fluorine chemical industry according to claim 1, wherein the bottom of the quenching tank (2) is connected with a liquid outlet pipe, the liquid outlet pipe is connected with a first circulating pump (8), the first circulating pump (8) is connected with a first cooler (9) through a pipeline, the first cooler (9) is connected with a liquid inlet pipe communicated with the quenching tank (2), the quenching tank (2) is connected with a recovery pipeline, and the recovery pipeline is provided with a first suction pump (10) and a second cooler (11).
6. The fluorine-containing waste liquid and waste gas incineration system applicable to the fluorine chemical industry according to claim 1, wherein the absorption tower (3) and the washing tower (4) are made of glass fiber reinforced plastics.
7. The fluorine-containing waste liquid and waste gas incineration system applicable to the fluorine chemical industry according to claim 1, wherein the absorption tower (3) is one of a bubble cap tower and a sieve plate tower.
8. The fluorine-containing waste liquid and waste gas incineration system suitable for the fluorine chemical industry according to claim 1, wherein the absorption tower (3) is provided with a two-stage spray structure, the spray structure at the upper part of the absorption tower (3) adopts softened water as a spray medium, and the spray structure at the lower part of the absorption tower (3) adopts dilute hydrofluoric acid absorption liquid as a spray medium.
9. The fluorine-containing waste liquid and waste gas incineration system applicable to the fluorine chemical industry according to claim 8, wherein a spraying structure at the lower part of the absorption tower (3) is connected with a crude acid tank (12) through a pipeline, the crude acid tank (12) is connected with a second suction pump (13), the second suction pump (13) is connected with a third cooler (14), and a flow guide pipe communicated with the absorption tower (3) is connected with the pipeline between the second suction pump (13) and the third cooler (14).
10. The fluorine-containing waste liquid and waste gas incineration system suitable for the fluorine chemical industry according to claim 1, wherein the bottom of the washing tower (4) is connected with a second circulating pump (15) through a pipeline, and the second circulating pump (15) is communicated with the upper end of the washing tower (4) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038125.4U CN219955351U (en) | 2023-04-28 | 2023-04-28 | Fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321038125.4U CN219955351U (en) | 2023-04-28 | 2023-04-28 | Fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219955351U true CN219955351U (en) | 2023-11-03 |
Family
ID=88553092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321038125.4U Active CN219955351U (en) | 2023-04-28 | 2023-04-28 | Fluorine-containing waste liquid and waste gas incineration system suitable for fluorine chemical industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219955351U (en) |
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2023
- 2023-04-28 CN CN202321038125.4U patent/CN219955351U/en active Active
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