CN219848938U - Accident fluorine gas leakage treatment device - Google Patents
Accident fluorine gas leakage treatment device Download PDFInfo
- Publication number
- CN219848938U CN219848938U CN202321287610.5U CN202321287610U CN219848938U CN 219848938 U CN219848938 U CN 219848938U CN 202321287610 U CN202321287610 U CN 202321287610U CN 219848938 U CN219848938 U CN 219848938U
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- Prior art keywords
- tower body
- fluorine gas
- accident
- tower
- air inlet
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052731 fluorine Inorganic materials 0.000 title claims abstract description 43
- 239000011737 fluorine Substances 0.000 title claims abstract description 43
- 238000009826 distribution Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract 3
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 13
- 238000005507 spraying Methods 0.000 abstract description 12
- 230000005587 bubbling Effects 0.000 abstract description 9
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 49
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000007921 spray Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- SOWHJXWFLFBSIK-UHFFFAOYSA-N aluminum beryllium Chemical compound [Be].[Al] SOWHJXWFLFBSIK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002221 fluorine Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical compound C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002760 rocket fuel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides an accident fluorine gas leakage treatment device. The structure is as follows: the tower comprises a tower body, wherein an air inlet is formed in the lower portion of the tower body, an air outlet is formed in the upper portion of the tower body, an air distribution pipe is arranged on the inner side of the air inlet, an overflow port is formed in the tower body and located below the air inlet, a cleaning port is formed in the lower end of the side wall of the tower body, a sprayer is arranged in the tower body and communicated with the inner bottom end of the tower body through a circulating pipe, a submerged pump and a water tank are respectively arranged on the circulating pipe, and a demister is arranged in the tower body and located below the air outlet. The utility model is divided into a bubbling absorption area and a spraying absorption area, and the bubbling structure is fully utilized to rapidly control the high-concentration fluorine gas and the spraying system is fully utilized to deeply purify pollutants, so that the fluorine gas can be rapidly removed after entering the absorption tower, the exhaust gas can be ensured to meet the current emission standard requirement, and the proper treatment of the leaked fluorine gas is realized.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment, in particular to an accident fluorine gas leakage treatment device.
Background
Fluorine has relatively wide application in industry, and can be used as an oxidant in rocket fuel, a raw material of halogenated fluorine, a refrigerant, plasma etching and the like. However, fluorine gas is a very corrosive diatomic gas, extremely toxic, and almost all organics and inorganics can react with fluorine, except for metal fluorides with the highest valence and a few pure perfluorinated organic compounds. Therefore, there are very strict regulations on the management and use of fluorine in industry and in laboratories. The fluorine leakage accident can cause serious harm, so that the emergency treatment is needed, and the leaked fluorine is absorbed and purified as soon as possible so as to relieve the pollution to the environment. In the prior art, special treatment equipment aiming at fluorine gas leakage is rarely available, and when common waste gas treatment equipment is used for a fluorine gas leakage accident, the reliability and the purification efficiency of the common waste gas treatment equipment are not guaranteed.
Disclosure of Invention
Aiming at the technical defects of the prior art, the utility model provides an accident fluorine gas leakage treatment device for solving the technical problem that the reliability and the purification efficiency of common waste gas treatment equipment are not guaranteed when the common waste gas treatment equipment is used for a fluorine gas leakage accident.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the utility model provides an accident fluorine gas leakage processing apparatus, which comprises a tower body, the air inlet, the gas outlet, the gas distribution pipe, the overflow mouth, the exhaust outlet, the spray thrower, the circulating pipe, the submerged pump, the water tank, the defroster, wherein, be provided with the air inlet in the lower part of tower body, be provided with the gas outlet in the upper portion of tower body, be provided with the gas distribution pipe in the inboard of air inlet, on the tower body, be located the position of air inlet below and be provided with the overflow mouth, be provided with the exhaust outlet at the lateral wall lower extreme of tower body, be provided with the spray thrower in the tower body inside, the spray thrower is linked together with the inside bottom of tower body through the circulating pipe, be provided with submerged pump and water tank on the circulating pipe respectively, be provided with the defroster in the tower body inside, be located the position of gas outlet below.
Preferably, the gas distribution pipe is a pipe body with a through hole on the surface.
Preferably, the liquid level depth in the tower body is 250-300mm higher than the gas distribution pipe.
Preferably, the gas distribution pipe is supported between the tower bottom and the tower wall.
Preferably, the water tank is positioned at the outer wall of the tower body, two submerged pumps are arranged,
preferably, the submerged pump is not provided with an outlet valve, or the outlet valve is plumbed shut.
Preferably, a fluorine gas leak signal transmitter is also included, which is in communication with the motor of the submerged pump.
In the structural layer, a tail gas distribution pipe is arranged at the bottom liquid storage part of the tower, in view of the requirement on corrosion resistance of materials, a perforated pipe gas distribution structure is adopted, the liquid level depth is higher than 250-300mm of the perforated pipe, and the perforated pipe is firmly supported from the bottom of the tower and the tower wall. And the overflow port is arranged to control the liquid level height, so that overlarge wind resistance is avoided. One side of the tower bottom is provided with an integrated water tank, a submerged pump with two submerged pumps is installed to be used as a spraying circulating pump, an outlet valve is not arranged on the circulating pump, or the outlet valve is sealed by lead, a pump motor is interlocked with an accident leakage signal, and once leakage occurs, the circulating pump is started rapidly. In a standby mode, one pump cannot be started if a fault occurs, and the automatic control system automatically starts the other pump. The upper part of the tower body is provided with a spray absorption system which is connected with a circulating pump to further absorb and purify fluorine gas which is not completely absorbed by bubbling; the existing air tower spraying structure reduces the system resistance and the maintenance workload. The spraying system is provided with two stages, and can meet the standard emission requirement of fluorine gas in combination with bubbling absorption. Meanwhile, the disturbance of the spraying system can make full use of the liquid alkali, the external demister at the top of the tower can be integrally pulled and replaced, the demisting effect is good, and the maintenance is simple.
The utility model provides an accident fluorine gas leakage treatment device. The device is divided into a bubbling absorption area and a spraying absorption area, the bubbling structure is fully utilized to rapidly control high-concentration fluorine gas, and the spraying system is fully utilized to deeply purify pollutants, so that the fluorine gas can be rapidly removed after entering the absorption tower, the exhaust gas can be ensured to meet the current emission standard requirements, and the proper treatment of the leaked fluorine gas is realized. The utility model is designed specifically for fluorine gas leakage accidents, has stable and reliable response and operation, good safety and high removal rate, and has outstanding technical advantages.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a process flow diagram of the utility model in operation;
in the figure:
1. tower body 2, air inlet 3, air outlet 4 and air distribution pipe
5. Overflow port 6, purge port 7, sprayer 8, circulation pipe
9. Submerged pump 10, water tank 11, defroster.
Detailed Description
Hereinafter, embodiments of the present utility model will be described in detail. In order to avoid unnecessary detail, well-known structures or functions will not be described in detail in the following embodiments. Approximating language, as used in the following examples, may be applied to create a quantitative representation that could permissibly vary without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
The utility model provides an accident fluorine gas leakage processing apparatus, as shown in fig. 1, including tower body 1, air inlet 2, gas outlet 3, the gas distribution pipe 4, overflow mouth 5, exhaust mouth 6, spray thrower 7, circulating pipe 8, submerged pump 9, water tank 10, defroster 11, wherein, be provided with air inlet 2 in the lower part of tower body 1, be provided with gas outlet 3 in the upper portion of tower body 1, be provided with gas distribution pipe 4 in the inboard of air inlet 2, on tower body 1, be provided with overflow mouth 5 in the position of air inlet 2 below, be provided with exhaust mouth 6 in the lateral wall lower extreme of tower body 1, be provided with spray thrower 7 in tower body 1 inside, spray thrower 7 is linked together with the inside bottom of tower body 1 through circulating pipe 8, be provided with submerged pump 9 and water tank 10 on circulating pipe 8 respectively, be provided with defroster 11 in tower body 1 inside, be located the position of gas outlet 3 below. Wherein, the air distribution pipe 4 is a pipe body with a through hole on the surface. The liquid level depth in the tower body 1 is higher than the gas distribution pipe 4250-300 mm. The gas distribution pipe 4 is supported between the bottom of the tower body 1 and the tower wall. The water tank 10 is located tower body 1 outer wall department, and submerged pump 9 sets up two, and submerged pump 9 does not set up the outlet valve, or the outlet valve plumbous seal. And also includes a fluorine gas leak signal transmitter in communication with the motor of the submerged pump 9.
The device parameters are as follows:
treatment gas amount: 6000m3/h.
Size: phi 1.2 multiplied by 4.0m, and a circulating water tank is arranged at the bottom.
Material quality: carbon steel PO.
Bubbling branch pipe: the gas distribution pipe is made of corrosion-resistant materials.
And (3) a spraying system: high-efficiency atomizing anti-blocking spray nozzle (volute), 2 sets of spray pipes and corrosion-resistant materials.
Demister: 1 set.
And (3) matching instrument: and 1 liquid level meter.
Corrosion resistant circulation pump: flow rate 20m 3 And (3) the lift is 25m,1, 5.5kw, an explosion-proof motor, 2, and one is used for preparation.
And (3) a pipeline: plastic lining pipes are adopted, and the number is as follows: 1 set.
The utility model needs to be matched with necessary equipment such as a conveying pipeline, an induced draft fan, a valve, a water pump, an electric control instrument and the like when in operation.
1. Draught fan
And the selection of the fan requires theoretical and actual calculation of the system pressure loss. Because the calculated value of the pipeline loss is the value under the ideal state, the pipeline loss change in the actual engineering has a certain gap from the theoretical calculation, and the pressure of the general straight pipe section is 10Pa/m and the local pressure is 50 Pa/m according to the experience and the actual measurement value of the collecting system of the user.
Loss of resistance along the way: round tube: hf=λ×l/d×v 2 /2g, local resistance loss: hf=ζ×v 2 /2g
Wherein: l-the tube length; d, pipe diameter; v-average flow velocity across the section; g-gravitational acceleration; λ—the coefficient of resistance along the way, also known as darcy coefficient, is generally determined experimentally; ζ -the local drag coefficient, is generally determined experimentally.
The fan adopts variable frequency control, and the variable frequency value is adjusted according to the concentration of fluorine gas in the space, so that the fluorine gas is discharged rapidly.
Device parameters:
rated gas volume: 7000m3/h
Rated wind pressure: 3500Pa
Power: 15kW, variable frequency control
Material quality: carbon steel lining plastic
Quantity: 2, one for one
Matching: explosion-proof motor with spring damping and water outlet.
2. Pipeline and exhaust pipe
In view of the corrosion characteristic of gas, the conveying pipeline adopts a carbon steel liner PO, and the exhaust barrel adopts PP wrapped aluminum beryllium material.
3. Control system and power distribution design
3.1 Targeted design
(1) The circulating pump, the fan and the external supply accident signal are interlocked, and the air conditioner is started rapidly in an accident state;
(2) The circulating pump and the fan are arranged in a standby mode, and in an automatic state, if one is unable to be started, the other is automatically started under the control of a program.
(3) Energy efficiency execution national standard 18613-2020, two-stage energy efficiency
3.2 conventional design
(1) The waste gas treatment system is provided with an independent electric cabinet, is powered by a double power supply, is in explosion-proof design, has an explosion-proof level ExdeIIc, and can realize remote optical fiber communication of a DCS (distributed control system) of an in-situ control and control room by adopting a Siemens PLC (programmable logic controller).
(2) The shell of the electric cabinet is made of carbon steel by spraying plastic, main electric elements in the electric cabinet are made of ABB, schneider and Siemens brands, the electric elements and cables are arranged clearly, short circuit is prevented, the operation is reliable, and signs are marked;
(3) Working power supply of control box: AC380/220V (three-phase four-wire)/50 Hz adopts a lower-in lower-out cable wire inlet and outlet mode.
(4) The control box receives a main air switch arranged at the power supply side, the main air switch is required to be short-circuited and overload protected, the air switch for power distribution of each mechanical equipment is required to be short-circuited and overload protected, and a thermal protection component is arranged for overload protection of the motor;
(5) The control box is provided with an on-off button, an emergency stop button and on-off and fault indication lamps of single-group equipment.
The grounding type of the low-voltage distribution system is TN-S.
All metal housings of all electrical equipment that are not charged and all metal components within the structure must be reliably grounded.
The instrument equipment is selected based on reliability and advancement, acid resistance and alkali resistance are required, the control system is industrial equipment, and the instrument power supply is 24VDC.
The working ground of the engineering instrument is grounded by using an electric system, and the grounding resistance is not more than 4 ohms.
As shown in fig. 2, during operation, the leaked fluorine gas in an accident state is discharged to a tail gas emergency absorption system through an exhaust fan, and the fluorine gas is absorbed and purified by liquid alkali by adopting two structures of bubbling absorption and spraying absorption. Bubbling and spraying are designed in an integrated tower, and emergency starting and operation control are utilized.
Accident exhaust amount 6000m 3 Per hour, a concentration of 0.0001167 (V/V) for 1 hour, a total amount of fluorine gas converted of 1.2kg; the reaction formula of absorbing fluorine gas by sodium hydroxide is as follows:
4NaOH+2F 2 ＝＝4NaF 2 +O 2 +2H 2 o (NaOH concentration higher than 2%)
The sodium hydroxide amount required for absorbing 1.2kg of fluorine gas is 2.5kg, 8% sodium hydroxide with 600mm liquid level is stored in the absorption tower at the same time, the net content of sodium hydroxide is 90kg, and the single emergency absorption dosage can be completely satisfied.
The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the scope of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. Accident fluorine gas leakage treatment device, which is characterized by comprising a tower body (1), an air inlet (2), an air outlet (3), an air distribution pipe (4), an overflow port (5), a cleaning port (6), a sprayer (7), a circulating pipe (8), a submerged pump (9), a water tank (10) and a demister (11), wherein the air inlet (2) is arranged at the lower part of the tower body (1), the air outlet (3) is arranged at the upper part of the tower body (1), the air distribution pipe (4) is arranged at the inner side of the air inlet (2), the overflow port (5) is arranged at the position on the tower body (1) below the air inlet (2), the cleaning port (6) is arranged at the lower end of the side wall of the tower body (1), the sprayer (7) is communicated with the inner bottom end of the tower body (1) through the circulating pipe (8), the submerged pump (9) and the water tank (10) are respectively arranged on the circulating pipe (8), and the demister (11) is arranged at the position inside the tower body (1) and below the air outlet (3).
2. The device for treating the leakage of the fluorine gas in the accident according to claim 1, wherein the gas distribution pipe (4) is a pipe body with a through hole formed on the surface.
3. The device for treating the leakage of the fluorine gas in the accident according to claim 2, wherein the liquid level depth in the tower body (1) is 250-300mm higher than that of the gas distribution pipe (4).
4. An accident fluorine gas leakage handling apparatus according to claim 2, wherein the gas distribution pipe (4) is supported between the bottom of the tower body (1) and the tower wall.
5. An accident fluorine gas leakage treatment device according to claim 1, characterized in that the water tank (10) is located at the outer wall of the tower body (1), and the submerged pumps (9) are provided in two.
6. An apparatus for treating an accident fluorine gas leakage according to claim 1, wherein the submerged pump (9) is not provided with an outlet valve or the outlet valve is lead-sealed.
7. An accident fluorine gas leakage handling arrangement according to claim 1, further comprising a fluorine gas leakage signal transmitter in communication with the motor of the submerged pump (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321287610.5U CN219848938U (en) | 2023-05-25 | 2023-05-25 | Accident fluorine gas leakage treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321287610.5U CN219848938U (en) | 2023-05-25 | 2023-05-25 | Accident fluorine gas leakage treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219848938U true CN219848938U (en) | 2023-10-20 |
Family
ID=88316119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321287610.5U Active CN219848938U (en) | 2023-05-25 | 2023-05-25 | Accident fluorine gas leakage treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219848938U (en) |
-
2023
- 2023-05-25 CN CN202321287610.5U patent/CN219848938U/en active Active
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| GR01 | Patent grant |