CN110040690A - Hydrogenation fluid catalyst separation extraction technique and its device in a kind of hydrogen peroxide manufacture - Google Patents
Hydrogenation fluid catalyst separation extraction technique and its device in a kind of hydrogen peroxide manufacture Download PDFInfo
- Publication number
- CN110040690A CN110040690A CN201910098694.XA CN201910098694A CN110040690A CN 110040690 A CN110040690 A CN 110040690A CN 201910098694 A CN201910098694 A CN 201910098694A CN 110040690 A CN110040690 A CN 110040690A
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- China
- Prior art keywords
- catalyst
- hydride
- filter
- hydrogen peroxide
- grade
- 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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- 239000003054 catalyst Substances 0.000 title claims abstract description 137
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 48
- 238000000605 extraction Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000000926 separation method Methods 0.000 title claims abstract description 29
- 239000012530 fluid Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 14
- 150000004678 hydrides Chemical class 0.000 claims abstract description 54
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 239000002245 particle Substances 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 238000011001 backwashing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000012224 working solution Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 5
- 239000010419 fine particle Substances 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/01—Hydrogen peroxide
- C01B15/022—Preparation from organic compounds
- C01B15/023—Preparation from organic compounds by the alkyl-anthraquinone process
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
The invention discloses hydrogenate fluid catalyst in a kind of hydrogen peroxide manufacture to separate extraction technique, which comprises the following steps: is delivered to the hydride in hydrogenation reactor containing catalyst in grade one filter by pump；Grade one filter carries out primary filtration to the hydride containing the catalyst, and the catalyst of small particle leaves grade one filter together with part hydride together, and rest part returns in hydrogenation reactor；The hydride after by-pass filtration containing catalyst is sent to secondary filter again；The catalyst of secondary filtration resides in secondary filter, and the hydride of transmission is sent into storage in pans；The present invention, using double-filtration separator, realizes the separation extraction of hydrogenation catalyst, effectively avoids entering oxidative system bring security risk because of catalyst fine particle, provide safeguard for device long-period stable operation under not parking state.
Description
Technical field
The present invention relates to the separation technology fields of hydrogenation catalyst, and in particular to fluidisation is hydrogenated in a kind of hydrogen peroxide manufacture
Bed catalyst separation extraction technique and its device.
Background technique
Anthraquinone fluidized bed hydrogen peroxide manufacture technique hydrogenation catalyst generallys use powdered with aluminium oxide or oxidation
Silicon is the palladium metal catalyst of carrier, and catalyst particle size representative value is usually 50 microns.It need to be according to dress according to process requirement
The hydrogenation efficiency set adds catalyst into reactor constantly to keep high hydrogenation efficiency and device load, works as catalyst
Reaching needs after certain amount to carry out parking process, and catalyst is all drawn off, and will lose activity or the lower partially catalyzed of activity
Agent separation, the preferable catalyst of state, which is again added in reactor, to be continued to use.
Currently used catalyst separates extraction mode, and treatment process down time is longer, heavy workload and cumbersome, unfavorable
In the continuous operation of device, device operating cost is increased.In addition, catalyst occurs dusting and falls off with the operation of device
Phenomenon will lead to hydrogen peroxide and acutely decompose, can lead to explosion accident when serious when tiny particle enters oxidative system, it is difficult to
Realize the purpose of highly effective and safe.
Summary of the invention
To achieve the goals above, the invention provides the following technical scheme:
The purpose of the present invention is to provide in a kind of hydrogen peroxide manufacture hydrogenate fluid catalyst separation extraction technique and
Its device, using double-filtration separator, realizes the separation extraction of hydrogenation catalyst, effectively keeps away under not parking state
Exempt to enter oxidative system bring security risk because of catalyst fine particle, be provided safeguard for device long-period stable operation.
Hydrogenation fluid catalyst separates extraction technique in a kind of hydrogen peroxide manufacture, which is characterized in that including following step
It is rapid:
(1) hydride in hydrogenation reactor containing catalyst is delivered in grade one filter by pump；
(2) grade one filter carries out primary filtration to the hydride containing the catalyst, the catalyst of small particle together with
Part hydride leaves grade one filter together, and rest part returns in hydrogenation reactor；
(3) hydride after by-pass filtration containing catalyst is sent to secondary filter again；
(4) catalyst of secondary filtration resides in secondary filter, and the hydride of transmission is sent into storage in pans；
(5) stop filtration system when the catalyst level in secondary filtration reaches the visor middle and upper part on secondary filter,
Carry out catalyst treatment；
(6) working solution from backwashing pump is first used to backwash grade one filter, it is anti-that flushing liquor returns to hydrogenation
Answer device；
(7) hydride in secondary filter is all extruded by nitrogen again；
(8) steam blowing is carried out again, and nitrogen is cooling；
(9) top end socket is finally opened to take out catalyst.
Optionally, the hydride of the secondary filtration can also be conveyed directly by hydrogenation reactor bottom, directly be carried out
Filtering, the catalyst of filtering reside in filter, and the hydride of transmission is sent into storage in pans.
A kind of hydrogenation fluid catalyst separation extraction device in hydrogen peroxide manufacture, it is characterised in that: the peroxidating
Hydrogenation fluid catalyst separation extraction device includes that catalyst unloads material conveying pump, catalyst discharging secondary filter in hydrogen production
With catalyst discharging grade one filter, wherein the catalyst unloads import and the hydrogenation reactor top hydride of material conveying pump
Discharge port connection, outlet to the catalyst discharging grade one filter；It is set on the catalyst discharging grade one filter
It is equipped with first outlet, the first outlet is connected to the hydrogenation reactor, is also set on the catalyst discharging grade one filter
It is equipped with second outlet and is connected to catalyst discharging secondary filter import, the catalyst discharging secondary filter outlet and hydrogenation
The connection of liquid storage tank.
Optionally, it further includes backwash tube that fluid catalyst separation extraction device is hydrogenated in the hydrogen peroxide manufacture
Line is connected to the discharge nozzle of the catalyst grade one filter.
Optionally, the catalyst discharging secondary filter is connected to steam pipe and nitrogen tube respectively by feeding line.
Optionally, the feed inlet of the catalyst discharging secondary filter is connected to the hydrogenation reactor lower part.
Optionally, the steam condensate tapping line of the catalyst discharging secondary filter is connected to discharge port pipeline,
And control discharging direction is carried out by valve.
Optionally, first outlet is the hydride outlet containing big particle size of catalyst.
Optionally, second outlet is the hydride outlet containing small particle catalyst.
Optionally, discharge nozzle is small particle catalyst hydride discharging pipeline.
The beneficial effects of the present invention are: the present invention send the hydride containing catalyst in hydrogen peroxide manufacture first
Enter and carry out primary filtration in grade one filter, the catalyst of small particle enters secondary filter together with part hydride and continues
Filtering, rest part return in hydrogenation reactor；The catalyst for carrying out secondary filtration resides in filter, the hydride of transmission
It is sent into storage in pans；Steam blowing and nitrogen purging, place are carried out after secondary filtration catalytic amount therein reaches requirement
After the completion of reason, opens filter seal head and take out catalyst；The present invention uses double-filtration separator, in not parking state
Under, the online separation extraction of hydrogenation catalyst is realized, and optionally produce from hydrogenation reactor top or lower part separation,
It effectively avoids entering oxidative system bring security risk because of catalyst fine particle, provides guarantor for device long-period stable operation
Barrier.
Detailed description of the invention
Fig. 1 is the schematic diagram of hydrogenation fluid catalyst separation extraction device in hydrogen peroxide manufacture.
1- catalyst unloads material conveying pump in figure, and 2- backwashes working liquid pipe, 3- secondary filtration hydride discharge pipe, 4-
Steam condensate pipeline, 5- catalyst discharging secondary filter, 6- jet chimney, 7- nitrogen pipeline, 8- catalyst discharging level-one
Filter, 9- hydrogenation reactor top hydride discharge pipe, 10- grade one filter return to hydrogenation reactor hydride pipeline,
11- hydrogenation reactor lower part hydride discharge pipe.
Specific embodiment
The following are better embodiments of the invention, but are not intended to limit the scope of the present invention.
Embodiment 1:
Hydrogenation fluid catalyst separates extraction technique in a kind of hydrogen peroxide manufacture, which is characterized in that including following step
It is rapid:
(1) hydride in hydrogenation reactor containing catalyst is delivered in grade one filter by pump；
(2) grade one filter carries out primary filtration to the hydride containing the catalyst, the catalyst of small particle together with
Part hydride leaves grade one filter together, and rest part returns in hydrogenation reactor；
(3) hydride after by-pass filtration containing catalyst is sent to secondary filter again；
(4) catalyst of secondary filtration resides in secondary filter, and the hydride of transmission is sent into storage in pans；
(5) stop filtration system when the catalyst level in secondary filtration reaches the visor middle and upper part on secondary filter,
Carry out catalyst treatment；
(6) working solution from backwashing pump is first used to backwash grade one filter, it is anti-that flushing liquor returns to hydrogenation
Answer device；
(7) hydride in secondary filter is all extruded by nitrogen again；
(8) steam blowing is carried out again, and nitrogen is cooling；
(9) top end socket is finally opened to take out catalyst.
Optionally, the hydride of the secondary filtration can also be conveyed directly by hydrogenation reactor bottom, directly be carried out
Filtering, the catalyst of filtering reside in filter, and the hydride of transmission is sent into storage in pans.
Embodiment 2:
For convenience of understanding, the present invention is also to hydrogenate fluid catalyst in hydrogen peroxide manufacture that above-described embodiment 1 provides
The schematic diagram of separation extraction device, as shown in Figure 1, to hydrogenate fluid catalyst in hydrogen peroxide manufacture provided in this embodiment
Separation extraction device, including catalyst unload material conveying pump 1, catalyst discharging secondary filter 5 and catalyst discharging by-pass filtration
Device 8, wherein catalyst unloads 1 import of material conveying pump and connect with hydrogenation reactor top hydride discharge port, and pump discharge, which is connected to, urges
Agent discharging grade one filter 8, hydride outlet of the catalyst discharging grade one filter 8 containing big particle size of catalyst and hydrogenation are anti-
Device is answered to be connected to, the hydride outlet containing small particle catalyst is connected to 5 import of catalyst discharging secondary filter, and catalyst unloads
The outlet of material secondary filter 5 is connected to hydride storage tank.
The small particle catalyst hydride of backwash pipeline and catalyst grade one filter 8 pipeline that discharges is connected to, into urging
The steam and nitrogen of agent discharging secondary filter 5 are connected to feeding line, and the hydride from hydrogenation reactor lower part is straight
It connects and is connected to the feed inlet of catalyst discharging secondary filter 5, the steam condensate drain pipe of catalyst discharging secondary filter 5
Line is connected to discharge port pipeline, carries out control discharging direction using valve.
Hydrogenation fluid catalyst separation extraction device in the hydrogen peroxide manufacture that the embodiment 2 provides, by hydrogen peroxide
The hydride containing catalyst in production unloads material conveying pump 1 by catalyst and is delivered in catalyst discharging grade one filter 5
Primary filtration is carried out, the catalyst of small particle enters catalyst discharging secondary filter 8 together with part hydride and continued
Filter, rest part return in hydrogenation reactor.The catalyst for carrying out secondary filtration resides in filter, and the hydride of transmission is sent
Enter storage in pans.Steam blowing is carried out after catalyst and the catalytic amount therein of discharging secondary filter 8 reach requirement
It is purged with nitrogen, after the completion of processing, opens 8 end socket of catalyst discharging secondary filter and take out catalyst.In not parking state
Under, the online separation extraction of hydrogenation catalyst is realized, and optionally from hydrogenation reactor top or lower part separation extraction.
It effectively avoids entering oxidative system bring security risk because of catalyst fine particle, provides guarantor for device long-period stable operation
Barrier.
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. hydrogenating fluid catalyst in a kind of hydrogen peroxide manufacture separates extraction technique, which comprises the following steps:
(1) hydride in hydrogenation reactor containing catalyst is delivered in grade one filter by pump；
(2) grade one filter carries out primary filtration to the hydride containing the catalyst, and the catalyst of small particle is together with part
Hydride leaves grade one filter together, and rest part returns in hydrogenation reactor；
(3) hydride after by-pass filtration containing catalyst is sent to secondary filter again；
(4) catalyst of secondary filtration resides in secondary filter, and the hydride of transmission is sent into storage in pans；
(5) stop filtration system when the catalyst level in secondary filtration reaches the visor middle and upper part on secondary filter, carry out
Catalyst treatment；
(6) working solution from backwashing pump is first used to backwash grade one filter, flushing liquor returns to hydrogenation reactor；
(7) hydride in secondary filter is all extruded by nitrogen again；
(8) steam blowing is carried out again, and nitrogen is cooling；
(9) top end socket is finally opened to take out catalyst.
2. hydrogenating fluid catalyst in a kind of hydrogen peroxide manufacture according to claim 1 separates extraction technique, special
Sign is: the hydride of the secondary filtration can also be conveyed directly by hydrogenation reactor bottom, be directly filtered, filtering
Catalyst reside in filter, the hydride of transmission is sent into storage in pans.
3. hydrogenating fluid catalyst separation extraction device in a kind of hydrogen peroxide manufacture, it is characterised in that: the hydrogen peroxide
In production hydrogenate fluid catalyst separation extraction device include catalyst unload material conveying pump, catalyst discharging secondary filter and
Catalyst discharging grade one filter, wherein the catalyst unloads the import of material conveying pump and hydrogenation reactor top hydride goes out
Material mouth connection, outlet to the catalyst discharging grade one filter；It is arranged on the catalyst discharging grade one filter
There is first outlet, the first outlet is connected to the hydrogenation reactor, is also set up on the catalyst discharging grade one filter
There is second outlet to be connected to catalyst discharging secondary filter import, the catalyst discharging secondary filter outlet and hydride
Storage tank connection.
4. fluid catalyst separation extraction device is hydrogenated in a kind of hydrogen peroxide manufacture according to claim 3, it is special
Sign is: it further includes backwash pipeline that fluid catalyst separation extraction device is hydrogenated in the hydrogen peroxide manufacture, and described
The discharge nozzle of catalyst grade one filter is connected to.
5. fluid catalyst separation extraction device is hydrogenated in a kind of hydrogen peroxide manufacture according to claim 3, it is special
Sign is: the catalyst discharging secondary filter is connected to steam pipe and nitrogen tube respectively by feeding line.
6. hydrogenation fluid catalyst separation extraction device in a kind of hydrogen peroxide manufacture according to claim 3 or 5,
Be characterized in that: the feed inlet of the catalyst discharging secondary filter is connected to the hydrogenation reactor lower part.
7. fluid catalyst separation extraction device is hydrogenated in a kind of hydrogen peroxide manufacture according to claim 6, it is special
Sign is: the steam condensate tapping line of the catalyst discharging secondary filter is connected to discharge port pipeline, and passes through valve
Door carries out control discharging direction.
8. fluid catalyst separation extraction device is hydrogenated in a kind of hydrogen peroxide manufacture according to claim 3, it is special
Sign is: first outlet is the hydride outlet containing big particle size of catalyst.
9. fluid catalyst separation extraction device is hydrogenated in a kind of hydrogen peroxide manufacture according to claim 3, it is special
Sign is: second outlet is the hydride outlet containing small particle catalyst.
10. fluid catalyst separation extraction device is hydrogenated in a kind of hydrogen peroxide manufacture according to claim 3, it is special
Sign is: discharge nozzle is small particle catalyst hydride discharging pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098694.XA CN110040690A (en) | 2019-01-31 | 2019-01-31 | Hydrogenation fluid catalyst separation extraction technique and its device in a kind of hydrogen peroxide manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910098694.XA CN110040690A (en) | 2019-01-31 | 2019-01-31 | Hydrogenation fluid catalyst separation extraction technique and its device in a kind of hydrogen peroxide manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110040690A true CN110040690A (en) | 2019-07-23 |
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|---|---|---|---|
| CN201910098694.XA Pending CN110040690A (en) | 2019-01-31 | 2019-01-31 | Hydrogenation fluid catalyst separation extraction technique and its device in a kind of hydrogen peroxide manufacture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871093A (en) * | 2021-01-14 | 2021-06-01 | 万华化学集团股份有限公司 | Reaction system for continuously removing damaged catalyst |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020193615A1 (en) * | 2001-03-28 | 2002-12-19 | Reijo Aksela | Hydrogenation of a working solution in a hydrogen peroxide production process |
| CN1817838A (en) * | 2006-02-17 | 2006-08-16 | 黎明化工研究院 | Hydrogenation process of hydrogen peroxide fluidized bed by anthraquinone |
| WO2011134345A1 (en) * | 2010-04-29 | 2011-11-03 | 扬州惠通化工技术有限公司 | Hydrogenating system for producing hydrogen peroxide |
| CN102921478A (en) * | 2012-10-24 | 2013-02-13 | 福建锦江石化有限公司 | Method and device for filtering and separating catalyst in reaction system for preparing hydrogen peroxide |
| CN103588176A (en) * | 2013-11-04 | 2014-02-19 | 扬州荣祥化工技术开发设计有限公司 | Production method of hydrogen peroxide |
| CN107032303A (en) * | 2017-06-15 | 2017-08-11 | 扬州惠通化工科技股份有限公司 | The fluid bed production system and production method of hydrogen peroxide |
-
2019
- 2019-01-31 CN CN201910098694.XA patent/CN110040690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020193615A1 (en) * | 2001-03-28 | 2002-12-19 | Reijo Aksela | Hydrogenation of a working solution in a hydrogen peroxide production process |
| CN1817838A (en) * | 2006-02-17 | 2006-08-16 | 黎明化工研究院 | Hydrogenation process of hydrogen peroxide fluidized bed by anthraquinone |
| WO2011134345A1 (en) * | 2010-04-29 | 2011-11-03 | 扬州惠通化工技术有限公司 | Hydrogenating system for producing hydrogen peroxide |
| CN102921478A (en) * | 2012-10-24 | 2013-02-13 | 福建锦江石化有限公司 | Method and device for filtering and separating catalyst in reaction system for preparing hydrogen peroxide |
| CN103588176A (en) * | 2013-11-04 | 2014-02-19 | 扬州荣祥化工技术开发设计有限公司 | Production method of hydrogen peroxide |
| CN107032303A (en) * | 2017-06-15 | 2017-08-11 | 扬州惠通化工科技股份有限公司 | The fluid bed production system and production method of hydrogen peroxide |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112871093A (en) * | 2021-01-14 | 2021-06-01 | 万华化学集团股份有限公司 | Reaction system for continuously removing damaged catalyst |
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| PB01 | Publication | ||
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Application publication date: 20190723 |