CN113388843A - Pickling tank for treating metal-containing wastewater based on acid circulating filtration regeneration technology - Google Patents
Pickling tank for treating metal-containing wastewater based on acid circulating filtration regeneration technology Download PDFInfo
- Publication number
- CN113388843A CN113388843A CN202110677110.1A CN202110677110A CN113388843A CN 113388843 A CN113388843 A CN 113388843A CN 202110677110 A CN202110677110 A CN 202110677110A CN 113388843 A CN113388843 A CN 113388843A
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- China
- Prior art keywords
- tank
- acid
- pickling tank
- connecting pipe
- descaling bath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002253 acid Substances 0.000 title claims abstract description 57
- 238000005554 pickling Methods 0.000 title claims abstract description 49
- 238000001914 filtration Methods 0.000 title claims abstract description 27
- 230000008929 regeneration Effects 0.000 title claims abstract description 23
- 238000011069 regeneration method Methods 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 22
- 239000002351 wastewater Substances 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 10
- 239000004917 carbon fiber Substances 0.000 claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 241000220317 Rosa Species 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000010814 metallic waste Substances 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 9
- 229910017604 nitric acid Inorganic materials 0.000 abstract description 9
- 239000000498 cooling water Substances 0.000 abstract description 8
- 238000000354 decomposition reaction Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/36—Regeneration of waste pickling liquors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a pickling tank for treating metal-containing wastewater based on an acid circulation filtration regeneration technology, which comprises a water tank, wherein a water replenishing hole extending to an inner cavity of the water tank is formed in the left side position of the top of the water tank, an outer tank of the pickling tank is fixedly welded in the right side position of the top of the water tank, connecting blocks are uniformly fixed on the side wall of the inner cavity of the outer tank of the pickling tank, inner walls of the multiple groups of connecting blocks are fixedly provided with inner tanks of the pickling tank, the inner tanks of the pickling tank are made of carbon fiber materials, a water pump is fixedly arranged in the right side position of the bottom of the water tank, and a third connecting pipe extending to the inner cavity of the outer tank of the pickling tank is fixedly arranged at the right output end of the water pump. This contain pickling tank for metal wastewater treatment based on sour circulation filtration regeneration technique inhales the cooling water in the water tank inner chamber through the start-up water pump and pours into the inner chamber of pickling tank outer container into through the third connecting pipe into, and unnecessary cooling water is isolated each other through automatic backward flow of second connecting pipe and then make between hot-air and the pickling tank inner tank, prevents that the acidizing fluid of being heated easy decomposition such as nitric acid from being heated and decomposing in high temperature environment.
Description
Technical Field
The invention relates to the technical field of acid circulating, filtering and regenerating technology equipment, in particular to a pickling tank for treating metal-containing wastewater based on an acid circulating, filtering and regenerating technology.
Background
The pickling is a necessary process flow before a plurality of metals are processed into products, a large amount of metals are dissolved in a pickling tank in the pickling process, oil carried by metal parts is also carried into the pickling tank, and the conventional pickling tank for treating metal-containing wastewater based on an acid circulation filtering regeneration technology can basically meet the use requirements of people, but certain problems still exist, and the specific problems are as follows:
most contain pickling tanks for metal waste water treatment based on acid circulation filtration regeneration technique in the existing market structure is comparatively simple, and when this contain the inside acidizing fluid of storing of pickling tank for metal waste water treatment based on acid circulation filtration regeneration technique when nitric acid, because the nature that nitric acid is heated the easy decomposition leads to acidizing fluid to deteriorate easily and make the cost of enterprises uprise.
Disclosure of Invention
The invention aims to provide a pickling tank for treating metal-containing wastewater based on an acid circulation filtration regeneration technology, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a contain descaling bath for metal waste water treatment based on acid circulation filtration regeneration technique, includes the water tank, the moisturizing hole that extends to the water tank inner chamber is seted up to water tank top left side position, the fixed welding of right side position at water tank top has the descaling bath outer container, the inner chamber lateral wall of descaling bath outer container evenly is fixed with connecting block, multiunit connecting block inner wall fixed mounting has the descaling bath inner box, and the descaling bath inner box is carbon fiber material, water tank bottom right side position fixed mounting has the water pump, water pump right side output end fixed mounting has the third connecting pipe that extends to descaling bath outer container inner chamber, descaling bath outer container left side wall top position fixed mounting has the second connecting pipe that extends to the water tank inner chamber.
Preferably, among the above-mentioned containing metal wastewater treatment descaling bath based on sour circulation filtration regeneration technique, descaling bath outer container right side wall bottom rigidity inlays and has the row's of extending to descaling bath inner box cavity sour pipe, descaling bath outer container top right side rigidity inlays and has the notes sour pipe that extends to descaling bath inner box cavity, the outer wall of notes sour pipe and row's sour pipe all is provided with the control valve.
Based on the technical characteristics, the acid liquid is convenient to add and discharge.
Preferably, among the above-mentioned pickling tank for metal-containing wastewater treatment based on acid circulation filtration regeneration technique, the right side position fixed mounting at pickling tank outer container top has the acid-resistant pump, acid-resistant pump left side input end fixed mounting has the fourth connecting pipe that extends to pickling tank inner box cavity, and the fourth connecting pipe sets up the right side position at notes acid pipe, acid-resistant pump right side output fixed mounting has the fifth connecting pipe, and fifth connecting pipe and fourth connecting pipe are carbon fiber material.
Based on the technical characteristics, the acid liquor is convenient to transfer.
Preferably, among the above-mentioned pickling tank for containing metal waste water treatment based on acid circulation filtration regeneration technique, the left side position fixed mounting at pickling tank outer container top has the rose box, rose box bottom intermediate position department fixed mounting has the first connecting pipe that extends to pickling tank inner box cavity, rose box left wall top position fixed mounting has the return acid pipe, and the outer wall of returning the acid pipe is provided with the control valve, rose box inner chamber bottom left and right sides position symmetry welding has the cushion, and is two sets of the top position of cushion is provided with the rose core.
Based on the technical characteristics, the acid liquor can be conveniently and automatically recovered.
Preferably, among the above-mentioned pickling tank for containing metal wastewater treatment based on sour circulation filtration regeneration technique, rose box, acid return pipe, cushion and first connecting pipe are carbon fiber material, the top position of rose box is provided with the detachable lid, and the lid passes through the bolt and is fixed mutually with the rose box.
Based on the technical characteristics, the filtering effect of the acid liquor is convenient to ensure.
Preferably, in the pickling tank for treating the metal-containing wastewater based on the acid circulation filtration regeneration technology, an observation window is arranged at the left side position of the front side wall of the outer tank of the pickling tank, and the observation window is made of a brown transparent material.
Based on the technical characteristics, the liquid level of the acid liquid can be observed conveniently, and the acid liquid can be prevented from being decomposed by light.
Compared with the prior art, the invention has the beneficial effects that:
through the design of this technical scheme, start the cooling water that the water pump absorbs in the water tank inner chamber and pour into the inner chamber of descaling bath outer container into through the third connecting pipe in, unnecessary cooling water is through the automatic backward flow of second connecting pipe and then make isolated each other between hot-air and the descaling bath inner tank, prevents that the acidizing fluid of being heated easy decomposition such as nitric acid from being heated decomposition in high temperature environment.
Drawings
FIG. 1 is a front sectional view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a front sectional view of the connecting block and the outer box of the pickling tank of the present invention.
In the figure: 1. a first connecting pipe; 2. connecting blocks; 3. an inner box of the pickling tank; 4. a second connecting pipe; 5. water replenishing holes; 6. an outer box of a pickling tank; 7. a water tank; 8. a water pump; 9. a third connecting pipe; 10. an acid discharge pipe; 11. a fourth connecting pipe; 12. an acid-resistant pump; 13. a fifth connecting pipe; 14. injecting an acid pipe; 15. cushion blocks; 16. a filter element; 17. a filter box; 18. returning to an acid pipe; 19. and (4) an observation window.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an embodiment of the present invention is shown: the utility model provides a contain descaling bath for metal wastewater treatment based on sour circulation filtration regeneration technique, including water tank 7, the moisturizing hole 5 that extends to 7 inner chambers of water tank is seted up to 7 top left side positions of water tank, the fixed welding in right side position at 7 tops of water tank has descaling bath outer container 6, the inner chamber lateral wall of descaling bath outer container 6 evenly is fixed with connecting block 2, 2 inner wall fixed mounting of multiunit connecting block have descaling bath inner box 3, and descaling bath inner box 3 is carbon fiber material, 7 bottom right side position fixed mounting of water tank have water pump 8, 8 right side output fixed mounting of water pump has the third connecting pipe 9 that extends to 6 inner chambers of descaling bath outer container, 6 left wall top position fixed mounting of descaling bath outer container has second connecting pipe 4 that extends to 7 inner chambers of water tank.
Please refer to fig. 1 and 2 in the drawings of the specification: the fixed position of the right wall bottom of the descaling bath outer container 6 inlays and has the acid discharge pipe 10 that extends to the 3 inner chambers of descaling bath inner box, the fixed position of the right side in the top of the descaling bath outer container 6 inlays and has the acid injection pipe 14 that extends to the 3 inner chambers of descaling bath inner box, the outer wall of acid injection pipe 14 and acid discharge pipe 10 all is provided with the control valve, pour into the acidizing fluid that is heated easy to decompose such as nitric acid into the inner chamber of descaling bath inner box 3 through opening the control valve and through acid injection pipe 14, discharge through opening the control valve and making acidizing fluid through acid discharge pipe 10, conveniently change.
Please refer to fig. 1 and 2 in the drawings of the specification: the right side position fixed mounting at 6 tops of descaling bath outer container has acid-proof pump 12, acid-proof pump 12 left side input end fixed mounting has the fourth connecting pipe 11 that extends to 3 inner chambers of descaling bath inner box, and fourth connecting pipe 11 sets up the right side position at notes sour pipe 14, acid-proof pump 12 right side output end fixed mounting has fifth connecting pipe 13, and fifth connecting pipe 13 and fourth connecting pipe 11 are carbon fiber material, thereby utilize fourth connecting pipe 11 and fifth connecting pipe 13 to pump the acidizing fluid into the use area through starting acid-proof pump 12.
Please refer to fig. 1 in the drawings of the specification: the left side position fixed mounting at 6 tops of descaling bath outer container has filter box 17, filter box 17 bottom intermediate position department fixed mounting has the first connecting pipe 1 that extends to 3 inner chambers of descaling bath inner box, filter box 17 left wall top position fixed mounting has return acid pipe 18, and the outer wall of return acid pipe 18 is provided with the control valve, filter box 17 inner chamber bottom left and right sides position symmetry welding has cushion 15, the top position of two sets of cushion 15 is provided with filter core 16, make the acidizing fluid after the use flow back to the inner chamber of filter box 17 through returning acid pipe 18 automatically through opening the control valve, acidizing fluid flows back to the inner chamber of descaling bath inner box 3 through first connecting pipe 1 after 16 automatic filtration through the filter core, accomplish recycling.
Please refer to fig. 1 in the drawings of the specification: the filter box 17, the acid return pipe 18, the cushion block 15 and the first connecting pipe 1 are made of carbon fiber materials, a detachable cover body is arranged at the top of the filter box 17 and fixed with the filter box 17 through bolts, the cover body and the filter box 17 are separated through screwing the bolts arranged on the cover body at the top of the filter box 17, then the filter element 16 is taken out to complete replacement, and the filter effect is conveniently guaranteed.
Please refer to fig. 2 in the drawings of the specification: an observation window 19 is arranged at the left side position of the front side wall of the pickling tank outer box 6, the observation window 19 is made of brown transparent materials, the liquid level condition in the pickling tank can be conveniently observed through the observation window 19 which is made into a brown transparent shape, and decomposition of acid liquid such as nitric acid which is easy to decompose under light is prevented.
The working principle is as follows: when the pickling tank for treating the metal-containing wastewater based on the acid circulation filtration regeneration technology is used, the pickling tank for treating the metal-containing wastewater based on the acid circulation filtration regeneration technology is firstly moved to a proper position through a moving wheel arranged at the bottom of a water tank 7, then, a proper amount of cooling water is injected into the inner cavity of the water tank 7 through the water replenishing hole 5, then the control valve is opened, nitric acid and other acid liquor which is easy to decompose by heating, such as nitric acid, is injected into the inner cavity of the inner tank 3 of the pickling tank through the acid injection pipe 14, then the water pump 8 is started to suck the cooling water in the inner cavity of the water tank 7 and the cooling water is injected into the inner cavity of the outer box 6 of the pickling tank through the third connecting pipe 9, the redundant cooling water automatically flows back through the second connecting pipe 4, so that the hot air and the pickling tank inner box 3 are mutually isolated, and the acid liquid such as nitric acid and the like which is easily decomposed by heating is prevented from being decomposed by heating in a high-temperature environment.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. A contain pickling tank for metal waste water treatment based on acid circulation filtration regeneration technique, includes water tank (7), its characterized in that: water tank (7) top left side position is seted up and is extended to water tank (7) inner chamber mend water hole (5), the fixed welding of right side position at water tank (7) top has descaling bath outer container (6), the inner chamber lateral wall of descaling bath outer container (6) evenly is fixed with connecting block (2), multiunit connecting block (2) inner wall fixed mounting has descaling bath inner box (3), and descaling bath inner box (3) are carbon fiber material, water tank (7) bottom right side position fixed mounting has water pump (8), water pump (8) right side output fixed mounting has third connecting pipe (9) that extend to descaling bath outer container (6) inner chamber, descaling bath outer container (6) left wall top position fixed mounting has second connecting pipe (4) that extend to water tank (7) inner chamber.
2. The pickling tank for metal-containing wastewater treatment based on the acid circulation filtration regeneration technology as claimed in claim 1, wherein: fixed the inlaying of descaling bath outer container (6) right side wall bottom position has acid discharge pipe (10) that extend to descaling bath inner box (3) inner chamber, fixed the inlaying of descaling bath outer container (6) top right side position has acid injection pipe (14) that extend to descaling bath inner box (3) inner chamber, the outer wall of acid injection pipe (14) and acid discharge pipe (10) all is provided with the control valve.
3. The pickling tank for metal-containing wastewater treatment based on the acid circulation filtration regeneration technology as claimed in claim 1, wherein: right side position fixed mounting at descaling bath outer container (6) top has acid-proof pump (12), acid-proof pump (12) left side input fixed mounting has fourth connecting pipe (11) that extend to descaling bath inner box (3) inner chamber, and fourth connecting pipe (11) set up the right side position at notes sour pipe (14), acid-proof pump (12) right side output fixed mounting has fifth connecting pipe (13), and fifth connecting pipe (13) and fourth connecting pipe (11) are carbon fiber material.
4. The pickling tank for metal-containing wastewater treatment based on the acid circulation filtration regeneration technology as claimed in claim 1, wherein: the utility model discloses a pickling tank, including pickling tank outer container (6) top, rose box (17) left side position fixed mounting has rose box (17), rose box (17) bottom intermediate position department fixed mounting has first connecting pipe (1) that extends to pickling tank inner box (3) inner chamber, rose box (17) left side wall top position fixed mounting has back sour pipe (18), and the outer wall of returning sour pipe (18) is provided with the control valve, rose box (17) inner chamber bottom left and right sides position symmetry welding has cushion (15), and is two sets of the top position of cushion (15) is provided with cassette (16).
5. The pickling tank for metal-containing wastewater treatment based on the acid circulation filtration regeneration technology as claimed in claim 4, wherein: the filter box (17), the acid return pipe (18), the cushion block (15) and the first connecting pipe (1) are made of carbon fiber materials, a detachable cover body is arranged at the top of the filter box (17), and the cover body is fixed with the filter box (17) through bolts.
6. The pickling tank for metal-containing wastewater treatment based on the acid circulation filtration regeneration technology as claimed in claim 1, wherein: an observation window (19) is arranged at the left side position of the front side wall of the pickling tank outer box (6), and the observation window (19) is made of brown transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677110.1A CN113388843A (en) | 2021-06-18 | 2021-06-18 | Pickling tank for treating metal-containing wastewater based on acid circulating filtration regeneration technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110677110.1A CN113388843A (en) | 2021-06-18 | 2021-06-18 | Pickling tank for treating metal-containing wastewater based on acid circulating filtration regeneration technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113388843A true CN113388843A (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110677110.1A Pending CN113388843A (en) | 2021-06-18 | 2021-06-18 | Pickling tank for treating metal-containing wastewater based on acid circulating filtration regeneration technology |
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| CN (1) | CN113388843A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016176096A (en) * | 2015-03-19 | 2016-10-06 | Ｊｆｅスチール株式会社 | Method for controlling temperature of acid cleaning liquid |
| CN206706215U (en) * | 2017-03-29 | 2017-12-05 | 天津源泰德润钢管制造集团有限公司 | A kind of zinc-plated preceding acid pickling and rust removing device of rectangular tube |
| CN206783770U (en) * | 2017-05-09 | 2017-12-22 | 广东前力环保科技有限公司 | A kind of sour circulated filter system |
| CN213001497U (en) * | 2020-07-09 | 2021-04-20 | 北京南轩兴达电子科技有限公司 | SPM pickling machine |
| CN213037851U (en) * | 2020-07-15 | 2021-04-23 | 扬州一线新材料有限公司 | A pickling cooling device for buddha's warrior attendant line production process |
| CN213113517U (en) * | 2020-05-13 | 2021-05-04 | 江门市奔胜隆数控精密制品有限公司 | Be used for stainless steel goods acid dip pickle |
-
2021
- 2021-06-18 CN CN202110677110.1A patent/CN113388843A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016176096A (en) * | 2015-03-19 | 2016-10-06 | Ｊｆｅスチール株式会社 | Method for controlling temperature of acid cleaning liquid |
| CN206706215U (en) * | 2017-03-29 | 2017-12-05 | 天津源泰德润钢管制造集团有限公司 | A kind of zinc-plated preceding acid pickling and rust removing device of rectangular tube |
| CN206783770U (en) * | 2017-05-09 | 2017-12-22 | 广东前力环保科技有限公司 | A kind of sour circulated filter system |
| CN213113517U (en) * | 2020-05-13 | 2021-05-04 | 江门市奔胜隆数控精密制品有限公司 | Be used for stainless steel goods acid dip pickle |
| CN213001497U (en) * | 2020-07-09 | 2021-04-20 | 北京南轩兴达电子科技有限公司 | SPM pickling machine |
| CN213037851U (en) * | 2020-07-15 | 2021-04-23 | 扬州一线新材料有限公司 | A pickling cooling device for buddha's warrior attendant line production process |
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Application publication date: 20210914 |