CN116395122B - Cabin oil sludge removal process - Google Patents
Cabin oil sludge removal process Download PDFInfo
- Publication number
- CN116395122B CN116395122B CN202310658123.3A CN202310658123A CN116395122B CN 116395122 B CN116395122 B CN 116395122B CN 202310658123 A CN202310658123 A CN 202310658123A CN 116395122 B CN116395122 B CN 116395122B
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- Prior art keywords
- sludge
- cabin
- electrode
- hot water
- washing
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- 239000010802 sludge Substances 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000005406 washing Methods 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000004080 punching Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000005119 centrifugation Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 22
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical group CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229910052799 carbon Inorganic materials 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 18
- 239000003960 organic solvent Substances 0.000 claims description 18
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- 239000003208 petroleum Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 238000007605 air drying Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000007790 solid phase Substances 0.000 claims description 3
- 238000010335 hydrothermal treatment Methods 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 description 40
- 239000010410 layer Substances 0.000 description 16
- 150000003839 salts Chemical class 0.000 description 6
- 239000012459 cleaning agent Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
- B63J4/004—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating sludge, e.g. tank washing sludge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
- B63J4/002—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating ballast water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
- B63J4/006—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating waste water or sewage
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention belongs to the field of cabin cleaning, and particularly discloses a cabin sludge removal process which comprises preliminary hydrothermal treatment, hole punching, electric removal, stirring, organic washing, organic centrifugation, washing drying, micro-electrolysis and ballast water treatment.
Description
Technical Field
The invention relates to the field of cabin cleaning, in particular to a cabin oil sludge removal process.
Background
In the use of large-scale boats and ships, the oil tank needs to be cleared up, can produce thick fatlute especially on oil tank bottom and the bulkhead, and its composition is very complicated, is the very high hazardous waste of oil content, and gets rid of very troublesome, and ordinary cleaning process just is the manual scraping through the crewman, and very expend the manpower, and the cleaning effect is not good, inefficiency, and the cleaning process is very laborious.
The ship cabin sludge contains a large amount of oil, solid particles, bacteria and salt, wherein the oil content is high, and the ship cabin sludge is an energy source with high potential value, however, the salt content is too high, and when the ship cabin sludge is directly burnt, the salt content can seriously corrode an incinerator, so that the ship cabin sludge is a waste which is difficult to treat even after the sludge is cleaned.
CN113600576a discloses a ship oil sump sludge removal device, which can collect sludge and complete briquetting, can prevent too much cleaned sludge from falling down when the sludge is pumped away from a collecting box after briquetting, prevent secondary leakage, can spray cleaning agents in advance in the advancing direction of cleaning, is convenient for softening the sludge, is convenient for completing self-cleaning of the device, improves the utilization rate of the cleaning agents, does not treat the problem of high salt content, and meanwhile, due to the adoption of a sludge scraping tip bucket, the bulkhead is difficult to contact so as to damage the protective layer of the bulkhead; JP2013500203a discloses a method and apparatus for purifying oil-contaminated bilge and sludge water on a ship, which uses the excess heat of a ship engine to purify sludge on the ship, which makes it difficult to remove the sludge adhering to the bulkhead and bilge.
Therefore, how to efficiently and laborsaving remove the oil sludge attached in the cabin is an urgent problem to be solved at present.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a cabin oil sludge removal process, which utilizes hot water and electric removal and organic stripping to remove oil sludge in a cabin, obtains the oil sludge which is more suitable for incineration and recycles part of recyclable oil.
To achieve the above object, an embodiment of the present invention provides a cabin sludge removal process, including:
(1) Preliminary hydrothermal: conveying hot water into a cabin with an oil sludge layer, and soaking the hot water for 20-40min;
(2) Punching: punching holes on the oil sludge layer to enable the hot water to be in full contact with the oil sludge layer; meanwhile, the hole after punching contacts the cabin wall;
(3) And (3) electric removal: paving carbon cloth on the surface of hot water to serve as a carbon cloth electrode, wherein the distance between the carbon cloth electrode and the surface of the oil sludge layer is less than 5cm, and simultaneously, taking a cabin wall as a wall electrode, electrically connecting the carbon cloth electrode and the wall electrode, wherein the voltage between the carbon cloth electrode and the wall electrode is set at 30-50V, and electrifying for 30min;
(4) Stirring: stirring the oil sludge and hot water after the electric removal, discharging the mixture in the cabin by using a slag discharge pump, centrifuging the discharged mixture to obtain dehydrated oil sludge and polluted hot water, and cleaning the dehydrated oil sludge by using an organic solvent to obtain a cleaning mixture;
(5) Organic stripping: after the mixture in the cabin is discharged, introducing an organic solvent into the cabin to carry out washing on residual oil sludge, so as to obtain a washing mixture;
(6) Organic centrifugation: conveying the cleaning mixture and the washing mixture to a centrifugal process respectively for centrifugal treatment, and conveying the liquid phase to a recovery process for recovery;
(7) Washing and drying: conveying the solid phase substance obtained in the organic centrifugation step to a water washing and drying process for water washing, and carrying out air drying treatment on the water washed substance to obtain air-dried sludge, and conveying the air-dried sludge to an incineration process for incineration treatment;
(8) Micro-electrolysis: conveying the polluted hot water and the water obtained in the washing and drying step to a micro-electrolysis process;
(9) Ballast water treatment: delivering the micro-electrolysis effluent to a ballast water treatment process for combined treatment;
in one or more embodiments of the invention, the sludge layer has a thickness of 1-5cm;
in one or more embodiments of the present invention, the carbon cloth electrode and the wall electrode are both connected to the positive and negative poles of a power source, and the positive and negative poles are alternately switched once per minute;
in one or more embodiments of the present invention, the organic solvent is acetonitrile and petroleum ether, and the volume ratio of acetonitrile to petroleum ether is 1:3-5;
in one or more embodiments of the invention, the hot water temperature is above 60 degrees celsius;
in one or more embodiments of the present invention, the sludge layer is soaked for 20-40min after the organic solvent is added to the hold in the organic stripping;
in one or more embodiments of the present invention, the organic solvent and the dehydrated sludge in the organic stripping are performed under the action of an ultrasonic process;
in one or more embodiments of the present invention, in the electrical removal process, an ultrasonic process is disposed in the cabin, and the electrical removal process and the ultrasonic process act together on the sludge layer to perform removal;
in one or more embodiments of the invention, the ultrasonic process power is 2000W, frequency 40kHz;
compared with the prior art, the embodiment of the invention has the following advantages:
(1) Softening the oil sludge layer by utilizing a preliminary hydrothermal mode, fully contacting hot water with the oil sludge by utilizing a hole punching mode, and at the moment, partially dissolving salt in the oil sludge into the hot water to improve the electric conduction efficiency;
(2) In the electric removing process, bubbles are formed between the carbon cloth electrode and the wall electrode by utilizing an electrolysis process, so that the oil sludge and the ship cabin wall are removed, and cavitation is formed under the ultrasonic action, so that the oil sludge and the ship cabin wall are further separated;
(3) The oil-water mixture is discharged and then added with the organic solvent, so that the use amount of the organic solvent is reduced, the cost is saved, and the risk of secondary pollution caused by the organic solvent is reduced;
(4) The salt content of the air-dried sludge after washing and drying is reduced, and the corrosion risk of the incinerator is reduced.
Drawings
Fig. 1 is a schematic view of a tank sludge removal process according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
Example 1: the thickness of the oil sludge layer in the ship cabin of a certain ship is 2.5cm;
as shown in fig. 1, a cabin sludge removal process according to a preferred embodiment of the present invention includes:
(1) Preliminary hydrothermal: conveying hot water into a cabin with an oil sludge layer, wherein the hot water is soaked for 20min, 30min and 40min, the temperature of the hot water is 80 ℃, and the oil sludge is softened, wherein no obvious improvement exists after 40min;
(2) Punching: punching holes on the oil sludge layer to enable the hot water to be in full contact with the oil sludge layer;meanwhile, the holes after punching contact the cabin wall, and the density of the punching holes on the oil sludge layer is more than 500/m 2 ；
(3) And (3) electric removal: paving carbon cloth on the surface of hot water to serve as a carbon cloth electrode, and simultaneously taking a cabin wall as a wall electrode, electrically connecting the carbon cloth electrode with the wall electrode, wherein the voltage between the carbon cloth electrode and the wall electrode is set at 30-50V, and electrifying for 30min;
(4) Stirring: stirring the oil sludge and hot water after the electric removal, discharging the mixture in the cabin by using a slag discharge pump, centrifuging the discharged mixture to obtain dehydrated oil sludge and polluted hot water, and cleaning the dehydrated oil sludge by using an organic solvent to obtain a cleaning mixture;
the voltages are respectively selected from 20V, 30V, 40V, 50V and 60V for testing, and the oil sludge removal rates after the stirring is finished are 46.7%, 62.3%, 72.5%, 75.2% and 75.1% respectively;
(5) Organic stripping: after the mixture in the cabin is discharged, introducing an organic solvent into the cabin to carry out washing on residual oil sludge, so as to obtain a washing mixture, and soaking the oil sludge layer for 40min after the organic solvent in the organic washing is added into the cabin; the organic solvent is acetonitrile and petroleum ether, the volume ratio of the acetonitrile to the petroleum ether is 1:2, 1:3, 1:4, 1:5 and 1:6, and the total sludge removal rate is 81.2%, 89.1%, 91.2%, 92.3% and 76.9% respectively; therefore, when the volume ratio of the acetonitrile to the petroleum ether is 1:3-5, the oil sludge removal rate can reach about 90%, and the removal efficiency is high;
(6) Organic centrifugation: conveying the cleaning mixture and the washing mixture to a centrifugal process respectively for centrifugal treatment, and conveying the liquid phase to a recovery process for recovery;
(7) Washing and drying: conveying the solid phase substance obtained in the organic centrifugation step to a water washing and drying process for water washing, and carrying out air drying treatment on the water washed substance to obtain air-dried sludge, and conveying the air-dried sludge to an incineration process for incineration treatment;
(8) Micro-electrolysis: conveying the polluted hot water and the water obtained in the washing and drying step to a micro-electrolysis process;
(9) Ballast water treatment: and conveying the micro-electrolysis effluent to a ballast water treatment process for combined treatment.
Example 2: on the basis of the embodiment 1, the thicknesses of the oil sludge layers in the ship cabins are respectively measured to be 1cm, 2cm, 3cm, 4cm and 5cm, and the power-on time is changed, so that the removal effect in the embodiment 1 can be achieved after 20min, 25min, 32min, 38min and 40min in sequence.
Example 3: on the basis of the embodiment 1, the carbon cloth electrode and the wall electrode are connected with the positive electrode and the negative electrode of a power supply, and the positive electrode and the negative electrode are alternately switched once per minute; the method can further improve the sludge removal efficiency, and the sludge removal rate is improved by more than 10% after stirring is finished.
Example 4: on the basis of the embodiment 1, the organic solvent and the dehydrated sludge are carried out under the action of an ultrasonic process, the ultrasonic process is arranged in the cabin in the electric removal process, the electric removal process and the ultrasonic process jointly act on the sludge layer to remove, the power of the ultrasonic process is 2000W, the frequency is 40kHz, and the total removal rate of the sludge after the treatment is improved to more than 95%.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (8)
1. A cabin sludge removal process, comprising:
(1) Preliminary hydrothermal: conveying hot water into a cabin with an oil sludge layer, wherein the hot water is soaked for 20-40min, and the temperature of the hot water is higher than 60 ℃;
(2) Punching: punching holes on the oil sludge layer to enable the hot water to be in full contact with the oil sludge layer; meanwhile, the hole after punching contacts the cabin wall;
(3) And (3) electric removal: paving carbon cloth on the surface of hot water to serve as a carbon cloth electrode, wherein the distance between the carbon cloth electrode and the surface of the oil sludge layer is less than 5cm, and simultaneously, taking a cabin wall as a wall electrode, electrically connecting the carbon cloth electrode and the wall electrode, wherein the voltage between the carbon cloth electrode and the wall electrode is set at 30-50V, and electrifying for 20-40min;
(4) Stirring: stirring the oil sludge and hot water after the electric removal, discharging the mixture in the cabin by using a slag discharge pump, centrifuging the discharged mixture to obtain dehydrated oil sludge and polluted hot water, and cleaning the dehydrated oil sludge by using an organic solvent to obtain a cleaning mixture;
(5) Organic stripping: after the mixture in the cabin is discharged, introducing an organic solvent into the cabin to carry out washing on residual oil sludge, so as to obtain a washing mixture;
(6) Organic centrifugation: conveying the cleaning mixture and the washing mixture to a centrifugal process respectively for centrifugal treatment, and conveying the liquid phase to a recovery process for recovery;
(7) Washing and drying: conveying the solid phase substance obtained in the organic centrifugation step to a water washing and drying process for water washing, and carrying out air drying treatment on the water washed substance to obtain air-dried sludge, and conveying the air-dried sludge to an incineration process for incineration treatment;
(8) Micro-electrolysis: conveying the polluted hot water and the water obtained in the washing and drying step to a micro-electrolysis process;
(9) Ballast water treatment: and conveying the micro-electrolysis effluent to a ballast water treatment process for combined treatment.
2. A hold sludge removal process as claimed in claim 1, wherein the sludge layer has a thickness of 1-5cm.
3. The process for removing sludge from a ship cabin according to claim 1, wherein the carbon cloth electrode and the wall electrode are connected to the positive electrode and the negative electrode of a power source, and the positive electrode and the negative electrode are alternately switched once per minute.
4. The process for removing the oil sludge from the ship cabin according to claim 1, wherein the organic solvent is acetonitrile and petroleum ether, and the volume ratio of the acetonitrile to the petroleum ether is 1:3-5.
5. The process for removing sludge from a ship cabin according to claim 1, wherein the sludge layer is soaked for 20 to 40 minutes after the organic solvent is added to the ship cabin in the organic stripping process.
6. A hold sludge removal process as claimed in claim 1, wherein the organic solvent and the dehydrated sludge in the organic stripping are conducted under the action of an ultrasonic process.
7. A cabin sludge removal process as claimed in claim 1, wherein in said electrical removal process, an ultrasonic process is provided in said cabin, the electrical removal process and the ultrasonic process acting together on the sludge layer to effect removal.
8. A hold sludge removal process as claimed in claim 6 or 7, wherein said ultrasonic process power is 2000W, frequency 40kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310658123.3A CN116395122B (en) | 2023-06-06 | 2023-06-06 | Cabin oil sludge removal process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310658123.3A CN116395122B (en) | 2023-06-06 | 2023-06-06 | Cabin oil sludge removal process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116395122A CN116395122A (en) | 2023-07-07 |
| CN116395122B true CN116395122B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310658123.3A Active CN116395122B (en) | 2023-06-06 | 2023-06-06 | Cabin oil sludge removal process |
Country Status (1)
| Country | Link |
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| CN (1) | CN116395122B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116620501B (en) * | 2023-06-15 | 2023-12-05 | 威海晟南船舶技术服务有限公司 | Cabin belt cleaning device |
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|---|---|---|---|---|
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| KR20120126735A (en) * | 2011-05-12 | 2012-11-21 | 삼성중공업 주식회사 | Wastes treatment system for ship |
| CN202558744U (en) * | 2012-04-25 | 2012-11-28 | 盘锦辽河油田远达油污泥处理利用有限公司 | Oil-sludge separation processing all-in-one machine |
| WO2013091032A1 (en) * | 2011-12-22 | 2013-06-27 | Tomov Petko Ivanov | Method for processing of oil sludge and oil sediments |
| CN104609603A (en) * | 2015-01-28 | 2015-05-13 | 天津市瑞德赛恩新材料开发有限公司 | FPSO oil tank polluted oil sludge clean integrated treatment method |
| CN107082544A (en) * | 2017-06-30 | 2017-08-22 | 天津滨海新区东科技发展有限公司 | It is a kind of to handle the process that oil stores up cabin bilge oil sludge |
| WO2020029653A1 (en) * | 2018-08-04 | 2020-02-13 | 盘锦宁泰能源科技有限公司 | Intelligent oil sludge treatment apparatus and treatment process |
| CN113600576A (en) * | 2021-08-08 | 2021-11-05 | 桑克 | Oil sludge removing device for ship oil bin |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK2459440T3 (en) * | 2009-07-27 | 2015-01-26 | Ppmclean Ab | Process and plant for the purification of oil-contaminated cargo and sludge water on a ship, ship equipped with such plant and use |
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2023
- 2023-06-06 CN CN202310658123.3A patent/CN116395122B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB793633A (en) * | 1955-06-06 | 1958-04-23 | Shell Res Ltd | A method for removing sludges from tanks and for recovering oil from these sludges |
| WO2004002900A1 (en) * | 2002-06-26 | 2004-01-08 | Hitachi, Ltd. | Waste water purification apparatus and waste water purification method including the regeneration of used coagulant |
| CN101810994A (en) * | 2010-03-11 | 2010-08-25 | 大连海事大学 | Combined marine pollution-preventing system |
| KR20120126735A (en) * | 2011-05-12 | 2012-11-21 | 삼성중공업 주식회사 | Wastes treatment system for ship |
| WO2013091032A1 (en) * | 2011-12-22 | 2013-06-27 | Tomov Petko Ivanov | Method for processing of oil sludge and oil sediments |
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| CN104609603A (en) * | 2015-01-28 | 2015-05-13 | 天津市瑞德赛恩新材料开发有限公司 | FPSO oil tank polluted oil sludge clean integrated treatment method |
| CN107082544A (en) * | 2017-06-30 | 2017-08-22 | 天津滨海新区东科技发展有限公司 | It is a kind of to handle the process that oil stores up cabin bilge oil sludge |
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| CN113600576A (en) * | 2021-08-08 | 2021-11-05 | 桑克 | Oil sludge removing device for ship oil bin |
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| Publication number | Publication date |
|---|---|
| CN116395122A (en) | 2023-07-07 |
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