CN109442974A - A kind of dry waste gas heat energy recovery and waste gas circulation treatment process - Google Patents
A kind of dry waste gas heat energy recovery and waste gas circulation treatment process Download PDFInfo
- Publication number
- CN109442974A CN109442974A CN201811319247.4A CN201811319247A CN109442974A CN 109442974 A CN109442974 A CN 109442974A CN 201811319247 A CN201811319247 A CN 201811319247A CN 109442974 A CN109442974 A CN 109442974A
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- Prior art keywords
- waste gas
- gas
- circulation line
- machine
- dehumidifying
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
- F26B25/007—Dust filtering; Exhaust dust filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/009—Alarm systems; Safety sytems, e.g. preventing fire and explosions
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
- Drying Of Gases (AREA)
Abstract
The invention belongs to feed processing technologies, disclose a kind of dry waste gas heat energy recovery and waste gas circulation treatment process, including drying machine, circulation line and the cyclone separator being set on circulation line, deduster, silencer-filter, dehumidifying and cooling heat recovery gas reheat machine and sterilizer, the inlet end of circulation line is connected to the exhaust outlet of drying machine, and the outlet side of circulation line is connected to the wind-supplying mouth of drying machine.Exhaust gas is imported from the inlet end of circulation line, successively after the processing of cyclone separator, deduster, silencer-filter, dehumidifying and cooling heat recovery gas reheat machine and sterilizer, is exported from the outlet side of circulation line.In the present invention, the setting of circulation line with cyclone separator, deduster, silencer-filter, dehumidifying and cooling heat recovery gas reheat machine and sterilizer, exhaust gas progress derived from drying machine institute can be handled reliable and securely, so that exhaust gas can be utilized cyclically by drying machine after processing.
Description
Technical field
The present invention relates to feed processing technology more particularly to a kind of dry waste gas heat energy recoveries and waste gas circulation to handle
Technique.
Background technique
With China's expanding economy, Living consumption is continuously improved, and demand of the resident to poultry meat product is more next
It is bigger, to bring herding livestock culture Industry Quick Development, correspondingly facilitate the prosperity of feedstuff industry.But due to feed
Processing industry is major power consumer, while being exhaust emission rich and influential family again, to produce feed processing production and environment
Contradiction between protection.
Existing environmental protection technology is only started in terms of environmental pollution, cannot be dried and be reused to exhaust gas, and
And have ignored the recycling of thermal energy in feed processing production process.
Summary of the invention
The purpose of the present invention is to provide a kind of dry waste gas heat energy recovery and waste gas circulation treatment process, can be to exhaust gas
It is dried and recycles, and the thermal energy in exhaust gas can be recycled during processing.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of dry waste gas heat energy recovery and waste gas circulation treatment process, including drying machine, circulation line and be set to
Cyclone separator, deduster, silencer-filter, dehumidifying and cooling heat recovery gas reheat machine and sterilizing on the circulation line
Device, the inlet end of the circulation line are connected to the exhaust outlet of the drying machine, and the outlet side of the circulation line is connected to institute
State the wind-supplying mouth of drying machine；
Material passes through from the drying machine, and material is dried in the drying machine, institute in drying process process
The exhaust gas of generation is imported from the inlet end of the circulation line, successively through the cyclone separator, the deduster, the noise elimination
After filter, the dehumidifying and cooling heat recovery gas reheat machine and sterilizer processing, from the outlet of the circulation line
End export；
The cyclone separator can export the solid particle in exhaust gas, and rupture pressure disc, institute are provided in the deduster
Dehumidifying and cooling heat recovery gas reheat machine is stated for thermal energy in exhaust gas and gas to be dehumidified, cooled down, recycled to exhaust gas again
Heat.
Preferably, being additionally provided with allocation of the amount of air valve on the circulation line, the allocation of the amount of air valve is located at the dedusting
Between device and the silencer-filter, the first air outlet of the allocation of the amount of air valve is connected to the silencer-filter, and second goes out
Air port is connected on the circulation line between the dehumidifying and cooling heat recovery gas reheat machine and the sterilizer.
Preferably, be additionally provided with blower and silencer on the circulation line, the blower be located at the deduster and
Between the allocation of the amount of air valve, the silencer is between the blower and the allocation of the amount of air valve.
Preferably, being additionally provided with blower and silencer on the circulation line, the blower is located at the dehumidifying and cooling
Between heat recovery gas reheat machine and the sterilizer, the silencer is between the blower and the sterilizer；
Second air outlet of the allocation of the amount of air valve is connected to the dehumidifying and cooling heat recovery gas reheat machine and described
On the circulation line between blower.
Preferably, the dehumidifying and cooling heat recovery gas reheat machine is connected to heat production system, the heat is raw
Production system is used for heat production hot water, conduction oil or steam using dehumidifying and cooling heat recovery gas reheat machine recycling.
It deposits preferably, the dehumidifying and cooling heat recovery gas reheat machine is connected to heat with system, the heat is deposited
With system for store and using the dehumidifying and cooling heat recovery gas reheat machine using recycling heat hot water produced, lead
Hot oil or steam.
Preferably, being additionally provided with breather valve on the circulation line, the breather valve is located at the dehumidifying and cooling heat and returns
Between getter body reheat machine and the sterilizer, the pneumostome of the breather valve is connected to ambient atmosphere.
Preferably, the pneumostome of the breather valve is connected to ambient atmosphere by filter device.
Preferably, the drying machine is horizontal drier.
Preferably, the drying machine is vertical drier.
Beneficial effects of the present invention:
With cyclone separator, deduster, silencer-filter, dehumidifying and cooling heat recovery gas reheat machine and sterilizer
The setting of circulation line can be handled reliable and securely exhaust gas progress derived from drying machine institute, so that exhaust gas is by handling
Can cyclically be utilized later by drying machine, the setting of rupture pressure disc in deduster, remove exhaust gas in dust simultaneously, Ke Yibao
The stable operation for demonstrate,proving follow-up equipment, avoids explosion caused by dust under extreme condition, improves the safety of technique, eliminated the noise
The setting of filter can guarantee the reliability service of dehumidifying and cooling heat recovery gas reheat machine, dehumidifying and cooling heat recovery gas reheating
The setting of device, so that while exhaust-gas treatment, additionally it is possible to effectively be recycled the heat in exhaust gas, sterilizer is set
Set so that exhaust gas it is final it is sterilized after import drying machine again and reused.
Detailed description of the invention
Fig. 1 is that drying machine is sleeping in dry waste gas heat energy recovery and waste gas circulation treatment process described in the embodiment of the present invention
A kind of structural schematic diagram of formula drying machine；
Fig. 2 is that drying machine is sleeping in dry waste gas heat energy recovery and waste gas circulation treatment process described in the embodiment of the present invention
Another structural schematic diagram of formula drying machine；
Fig. 3 is that drying machine is vertical in dry waste gas heat energy recovery and waste gas circulation treatment process described in the embodiment of the present invention
A kind of structural schematic diagram of formula drying machine；
Fig. 4 is that drying machine is vertical in dry waste gas heat energy recovery and waste gas circulation treatment process described in the embodiment of the present invention
Another structural schematic diagram of formula drying machine.
In figure:
100, circulation line；200, horizontal drier；300, vertical drier；
1, cyclone separator；
2, deduster；
3, silencer-filter；
4, dehumidifying and cooling heat recovery gas reheat machine；
5, sterilizer；
6, allocation of the amount of air valve；
7, blower；
8, silencer；
9, breather valve；91, pneumostome；
10, filter device.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end
Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing
The embodiment stated is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Drying process unit is important a ring in feed process production link, in current feed production technology,
Drying process unit is the production link for generating a large amount of damp and hot exhaust gas, and one when produces 10 tons of drying production line, average to arrange
Air quantity about 30000-40000m3/h.These exhaust gas have several processing modes at present: 1, being directly discharged to atmosphere；2, plasma is net
Chemical industry skill；3, spray washing+ultraviolet catalytic technique+sewage treatment；4, microbe filter purification process.
Above several processing modes, it is greatly to pollute to ambient enviroment that the first, which is directly discharged to atmosphere, at present completely
Demand of the people to living environment is not met, the requirement of Environmental protection is not met yet, is unfavorable for national sustainable development
Strategic objective.Several processing modes afterwards, there are environment protection treating occupation area of equipment is big, construction is big；Primary investment is high,
Operating cost is high, increases business burden；Environment protection treating equipment cannot still eliminate surrounding environment influence after building up；Do not recycle original
Come waste thermal energy the problems such as.
As Figure 1-Figure 4, the present invention provides a kind of dry waste gas heat energy recovery and waste gas circulation treatment process, including
Drying machine, circulation line 100 and the cyclone separator 1 being set on circulation line 100, silencer-filter 3, remove deduster 2
Wet cooling heat recovery gas reheat machine 4 and sterilizer 5, the inlet end of circulation line 100 are connected to the exhaust outlet of drying machine, follow
The outlet side on endless tube road 100 is connected to the wind-supplying mouth of drying machine.Material passes through from drying machine, is done by drying machine to material
Dry processing, generated exhaust gas is imported from the inlet end of circulation line 100 in drying process process, successively through cyclone separator 1,
After deduster 2, silencer-filter 3, dehumidifying and cooling heat recovery gas reheat machine 4 and sterilizer 5 are handled, from circulation line 100
Outlet side export.Cyclone separator 1 can export the solid particle in exhaust gas, and rupture pressure disc is provided in deduster 2, dehumidifying
Cooling heat recovery gas reheat machine 4 to exhaust gas for being dehumidified, being cooled down, being recycled thermal energy and gas reheating in exhaust gas.
In the present invention, cyclone separator 1, deduster 2, silencer-filter 3, the hot charging again of dehumidifying and cooling heat recovery gas are had
The setting of the circulation line 100 of 4 and sterilizer 5 is set, exhaust gas progress derived from drying machine institute can be handled reliable and securely, be made
Obtaining exhaust gas can cyclically be utilized by drying machine after processing, the setting of rupture pressure disc in deduster 2, remove exhaust gas
Middle dust is simultaneously, it is ensured that the stable operation of follow-up equipment avoids explosion caused by dust under extreme condition, improves work
The safety of skill, the setting of silencer-filter 3 can guarantee the reliability service of dehumidifying and cooling heat recovery gas reheat machine 4, remove
The setting of wet cooling heat recovery gas reheat machine 4, so that while exhaust-gas treatment, additionally it is possible to carry out the heat in exhaust gas
Effective recycling, the setting of sterilizer 5 so that exhaust gas it is final it is sterilized after import drying machine again and reused.
In the present embodiment, dehumidifying and cooling heat recovery gas reheat machine 4 cool down to exhaust gas and remove using heat pump techniques
It is wet, and carry out heat recovery.
In the present embodiment, allocation of the amount of air valve 6 is additionally provided on circulation line 100, allocation of the amount of air valve 6 is located at deduster 2
Between silencer-filter 3, the first air outlet of allocation of the amount of air valve 6 is connected to silencer-filter 3, and the second air outlet, which is connected to, to be removed
On circulation line 100 between wet cooling heat recovery gas reheat machine 4 and sterilizer 5.The setting of above-mentioned distinguished and admirable distributing valve, can
It is adjusted with the temperature and humidity for the exhaust gas being discharged according to the exhaust outlet of production unit and enters the hot charging again of dehumidifying and cooling heat recovery gas
The air quantity for setting 4 reaches system operation optimization.
Specifically, being additionally provided with blower 7 and silencer 8 on circulation line 100, blower 7 is for improving in circulation line 100
The circulating rate of exhaust gas, silencer 8 is for reducing generated noise in exhaust gas circulation treatment process.Blower 7 and silencer 8
There are two types of position settings: Yi Zhongwei, for blower 7 between deduster 2 and allocation of the amount of air valve 6, silencer 8 is located at blower 7 and wind
It measures between distributing valve 6；Another kind is that blower 7 is located between dehumidifying and cooling heat recovery gas reheat machine 4 and sterilizer 5, is eliminated the noise
(the second air outlet of allocation of the amount of air valve 6 is connected to dehumidifying and cooling heat recovery gas to device 8 at this time between blower 7 and sterilizer 5
On circulation line 100 between reheat machine 4 and blower 7).
More specifically, needs are adjusted according to production system, dehumidifying and cooling heat recovery gas reheat machine 4 is connected to heat
Production system, the heat that heat production system is used to recycle using dehumidifying and cooling heat recovery gas reheat machine 4 produce hot water, lead
Hot oil or steam.
More specifically, needs can also be adjusted according to production system, dehumidifying and cooling heat recovery gas reheat machine 4 is connected to
It deposits in heat with system, heat is deposited with system for storing and use dehumidifying and cooling heat recovery gas reheat machine 4 using recycling
Heat hot water produced, conduction oil or steam.
In the present embodiment, breather valve 9 is additionally provided on circulation line 100, breather valve 9 is located at dehumidifying and cooling recuperation of heat gas
(in second of setting of blower 7 and silencer 8, breather valve 9 is located at silencer 8 between body reheat machine 4 and sterilizer 5
Between sterilizer 5), the pneumostome 91 of breather valve 9 is connected to ambient atmosphere.The setting of breather valve 9, avoids circulation line
Occur negative pressure in 100, has ensured the reliability service of entire dry waste gas heat energy recovery and waste gas circulation treatment process.
Specifically, the pneumostome 91 of breather valve 9 is connected to ambient atmosphere by filter device 10.Above-mentioned setting, so that following
Supplement air in the external world's successively can enter production after filter device 10 and sterilizer 5 are handled when negative pressure generates in endless tube road 100
Unit improves the reliability of production unit processing.
In the present embodiment, drying machine is specifically as follows horizontal drier 200 or vertical drier 300, when it is horizontal
When drying machine 200, the outlet side of circulation line 100 is respectively communicated with by multiple allocation of the amount of air valves in the more of horizontal drier 200
A wind-supplying mouth.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of dry waste gas heat energy recovery and waste gas circulation treatment process, which is characterized in that including drying machine, circulation line
(100) and be set on the circulation line (100) cyclone separator (1), deduster (2), silencer-filter (3), remove
Wet cooling heat recovery gas reheat machine (4) and sterilizer (5), the inlet end of the circulation line (100) are connected to described dry
The outlet side of the exhaust outlet of dry machine, the circulation line (100) is connected to the wind-supplying mouth of the drying machine；
Material passes through from the drying machine, and material is dried in the drying machine, produced in drying process process
Exhaust gas from the inlet end of the circulation line (100) import, successively through the cyclone separator (1), the deduster (2),
After the silencer-filter (3), the dehumidifying and cooling heat recovery gas reheat machine (4) and the sterilizer (5) processing, from institute
State the outlet side export of circulation line (100)；
The cyclone separator (1) can export the solid particle in exhaust gas, be provided with rupture pressure disc in the deduster (2),
The thermal energy that the dehumidifying and cooling heat recovery gas reheat machine (4) is used to dehumidify to exhaust gas, cool down, recycle in exhaust gas is gentle
Body reheating.
2. dry waste gas heat energy recovery according to claim 1 and waste gas circulation treatment process, which is characterized in that described to follow
It is additionally provided on endless tube road (100) allocation of the amount of air valve (6), the allocation of the amount of air valve (6) is located at the deduster (2) and described disappears
Between acoustical filter (3), the first air outlet of the allocation of the amount of air valve (6) is connected to the silencer-filter (3), the second outlet air
Mouth is connected to the circulation line between the dehumidifying and cooling heat recovery gas reheat machine (4) and the sterilizer (5)
(100) on.
3. dry waste gas heat energy recovery according to claim 2 and waste gas circulation treatment process, which is characterized in that described to follow
Blower (7) and silencer (8) are additionally provided on endless tube road (100), the blower (7) is located at the deduster (2) and the wind
It measures between distributing valve (6), the silencer (8) is between the blower (7) and the allocation of the amount of air valve (6).
4. dry waste gas heat energy recovery according to claim 2 and waste gas circulation treatment process, which is characterized in that described to follow
Blower (7) and silencer (8) are additionally provided on endless tube road (100), the blower (7) is located at the dehumidifying and cooling heat recovery gas
Between reheat machine (4) and the sterilizer (5), the silencer (8) be located at the blower (7) and the sterilizer (5) it
Between；
Second air outlet of the allocation of the amount of air valve (6) is connected to the dehumidifying and cooling heat recovery gas reheat machine (4) and institute
It states on the circulation line (100) between blower (7).
5. dry waste gas heat energy recovery according to claim 1 and waste gas circulation treatment process, which is characterized in that described to remove
Wet cooling heat recovery gas reheat machine (4) is connected to heat production system, and the heat production system described in utilization for removing
Heat production hot water, conduction oil or the steam of wet cooling heat recovery gas reheat machine (4) recycling.
6. dry waste gas heat energy recovery according to claim 1 and waste gas circulation treatment process, which is characterized in that described to remove
Wet cooling heat recovery gas reheat machine (4) is connected to heat and deposits with system, and the heat is deposited with system for storing and using
The dehumidifying and cooling heat recovery gas reheat machine (4) utilizes recycling heat hot water, conduction oil or steam produced.
7. dry waste gas heat energy recovery according to claim 1 and waste gas circulation treatment process, which is characterized in that described to follow
It is additionally provided on endless tube road (100) breather valve (9), the breather valve (9) is located at the dehumidifying and cooling heat recovery gas hot charging again
It sets between (4) and the sterilizer (5), the pneumostome (91) of the breather valve (9) is connected to ambient atmosphere.
8. dry waste gas heat energy recovery according to claim 7 and waste gas circulation treatment process, which is characterized in that described to exhale
The pneumostome (91) for inhaling valve (9) is connected to ambient atmosphere by filter device (10).
9. -8 any the dry waste gas heat energy recovery and waste gas circulation treatment process according to claim 1, which is characterized in that
The drying machine is horizontal drier (200).
10. -8 any the dry waste gas heat energy recoveries and waste gas circulation treatment process, feature exist according to claim 1
In the drying machine is vertical drier (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319247.4A CN109442974B (en) | 2018-11-07 | 2018-11-07 | Heat energy recycling and waste gas circulating treatment process for dry waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811319247.4A CN109442974B (en) | 2018-11-07 | 2018-11-07 | Heat energy recycling and waste gas circulating treatment process for dry waste gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109442974A true CN109442974A (en) | 2019-03-08 |
| CN109442974B CN109442974B (en) | 2020-10-20 |
Family
ID=65550975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811319247.4A Active CN109442974B (en) | 2018-11-07 | 2018-11-07 | Heat energy recycling and waste gas circulating treatment process for dry waste gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN109442974B (en) |
Cited By (1)
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| CN109909048A (en) * | 2019-04-10 | 2019-06-21 | 广州金鹏环保工程有限公司 | A kind of zero waste gas emission material-pulverizing device |
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| JP2002027958A (en) * | 2000-07-11 | 2002-01-29 | Johnson Boiler Kk | Apparatus for drying and sterilizing powdery or granular material |
| WO2011087419A1 (en) * | 2010-01-14 | 2011-07-21 | Per Lysedal Ab | Process and pneumatic dryer for treating bulk material |
| CN201813772U (en) * | 2010-07-22 | 2011-05-04 | 杭志奇 | Powdered milk preparation drying system with surplus heat utilization and dust recovery |
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| CN109909048A (en) * | 2019-04-10 | 2019-06-21 | 广州金鹏环保工程有限公司 | A kind of zero waste gas emission material-pulverizing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109442974B (en) | 2020-10-20 |
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Denomination of invention: A process for heat energy reuse and waste gas circulation treatment of dry waste gas Effective date of registration: 20211102 Granted publication date: 20201020 Pledgee: Bank of Guangzhou branch of the Bank of Guangzhou Science City Branch Pledgor: GUANGZHOU JP.EPE Co.,Ltd. Registration number: Y2021980011713 |