-
Hydrocracking Unit - How it Works
We’ll take a look at an overview of how a Hydrocracking unit works. This is a common operation in oil and gas refineries around the world.
This is a teaser for a upcoming Process Hazard Identification course. What to see more like this? Check out our learning at https://academy.icarus-orm.com/courses/phacertification
published: 01 Apr 2022
-
Hydrocracking
Production Pragmagora Creative Media
http://www.pragmagora.be
published: 07 Jan 2016
-
Refinery Processes: Cracking
Because there is more demand for some distilled products like gasoline, refiners have an incentive to convert heavy liquids into lighter liquids. The term cracking comes from the process of breaking up long hydrocarbon molecules into smaller, more useful molecules. The cracking process converts heavy straight run liquids into gasoline. There are multiple versions of the cracking process, and refiners use the process extensively. Cracking is a highly controlled process, so cracking units exist separate from distillation columns. The most common type of cracking is “cat cracking,” named for the use of catalysts, substances added to a chemical reaction to speed up the process.
published: 12 Jan 2017
-
Hydrocracking Unit
1. Feed Filters: cartridge type 10-25 microns-not recommended due disposal issue or automatic backwash systems 20-30 microns, very flexible & low maintenance but CAPEX intensive, feed filtration is a must to avoid fouling and deposits
2. Feed pump: a beast with discharge pressure up to 200 barg, multistage high head centrifugal with steam turbine / electrical motor, should be never operating below min flow
3. Feed/Reactor Effluent HX: special design due to effluent characteristics & high operating p & T 400°C / 190 barg, traditional or modified “D” TEMA type not recommended due to maintenance / reliability issues, but special type from Lummus Breech-lock high pressure is mandatory due to safe, easy & reliable conferred by new breech lock pressure closure system
4. Fired Heater combined ...
published: 14 Aug 2022
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Hydrocracker Description
Description
published: 16 Nov 2022
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Fluid Catalytic Cracking Unit Overview FCC
published: 12 Jan 2022
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End of production process for the manifacturing of Hydrocracking reactors
This is the end of our production process for the manufacturing of 7 Hydrocracking reactors for a primary Client in Middle East. We are involved in this engagement as supplier of all the Reactors on this Service within a newly built Grassroots Refinery. In the video, you can see the lifting cover's assembly which will be used on site to Lift and then erect on foundations such reactors. This is an important part of the Project, since we must ensure maximum reliability and safety in Lifting 1000+ tons weight
published: 21 Nov 2020
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Hydrocracker Unit Process (HCU) | Diesel Hydrotreating unit (DHT) - Tour
The Hydrocracking Process in a typical Hydrocracker unit and a Diesel Hydrotreating unit is intricately covered with Animation in the Training module.The various equipment like reactors are described in the Diesel Hydrotreating process and Hydrocracking Process Animation. The Hydrocracking process in a Refinery is used to give fuel like Diesel, Naphtha, etc. The Hydrotreating process is used to remove impurities from Diesel feed. The module covers an integrated HCU unit and DHT unit that utilizes a common Make-up gas compressor, Recycle gas compressor and Light Ends recovery system.
published: 17 Sep 2017
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TESTING DIFFERENT TYPES OF SUTLI CRACKERS | HYDRO CRACKERS TESTING | DIWALI CRACKERS TESTING| PATAKE
CRACKERS TESTING VIDEOS:
https://www.youtube.com/watch?v=sdYVq8qR22c&list=PLpnnKxgeJp4oVo_RzymYcTH3WjFIjXUUU
FIREWORKS STASHES VIDEOS:
https://www.youtube.com/watch?v=UbubiIzFs10&list=PLpnnKxgeJp4o4m0njGQaIziyBxCpnG1Y_
BUDGET FIREWORKS STASH VIDEOS:
https://www.youtube.com/watch?v=M_BQvC9Q_vU&list=PLpnnKxgeJp4pZtR_vSzkoTX9QXWRxMcAa
SKYSHOTS TESTING VIDEOS:
https://www.youtube.com/watch?v=p0ZSJhVlhs4&list=PLpnnKxgeJp4rXr1oMhwasD1cnCtRE5w7f
CRACKERS VIDEOS IN ENGLISH:
https://www.youtube.com/watch?v=g5K36-X1HH0&list=PLpnnKxgeJp4qxH1m3_TGZy6t_he04Drwi
FIREWORKS EXPERIMENT VIDEOS:
https://www.youtube.com/watch?v=EMTna4AwFXQ&list=PLpnnKxgeJp4o8bGWeRL35dK6kjTOAFajA
CRACKERS TESTING IN SNOW:
https://www.youtube.com/watch?v=Ze1RXbRdHa8&list=PLpnnKxgeJp4pYYT-KUuq_BsffaAYMkY2C
VLOGS:
https:/...
published: 06 Nov 2020
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وحدة التكسير الحفزي Hydro Cracker Unit
مرحب بيكوا علي قناة السلامة للجميع معاكوا الكيميائي / محمد عاشور قنديل إستكمالا لسلسلة محاضرات تصنيع البترول
محاضرتنا النهاردة هنتكلم فيها عن وحدة الhydro cracking طبعا أحنا بنعتبرها أهم وحدة في المصاه علشان بتحولي المركبات الزيتية الي منتجات بنسبة تصل الي 97% من كل التغذية بتعت الوحدة والمنتجات دي زي السولار –وقود الطائرات – البنزين – البوتاجاز – مش كدة وبس ......
المصادر
www.arab-oil-naturegas.com
Petroleum refining technology and economics
www.arab-ency.com
Oil-Finding
AN INTRODUCTION TO THE GEOLOGICAE STUDY OF PETROLEUM
https://www.facebook.com/mohamed.ashourkandil
للدعم علي linkedIn
https://www.linkedin.com/in/mohamed-ashour-64499419a/
للدعم علي صفحة السلامة للجميع safety for all
https://www.facebook.com/mohamedashourkandil1977/?modal=admin_todo_tour
للدعم علي صفحة Skills-De...
published: 06 Jul 2020
6:11
Hydrocracking Unit - How it Works
We’ll take a look at an overview of how a Hydrocracking unit works. This is a common operation in oil and gas refineries around the world.
This is a teaser for...
We’ll take a look at an overview of how a Hydrocracking unit works. This is a common operation in oil and gas refineries around the world.
This is a teaser for a upcoming Process Hazard Identification course. What to see more like this? Check out our learning at https://academy.icarus-orm.com/courses/phacertification
https://wn.com/Hydrocracking_Unit_How_It_Works
We’ll take a look at an overview of how a Hydrocracking unit works. This is a common operation in oil and gas refineries around the world.
This is a teaser for a upcoming Process Hazard Identification course. What to see more like this? Check out our learning at https://academy.icarus-orm.com/courses/phacertification
- published: 01 Apr 2022
- views: 33164
2:47
Hydrocracking
Production Pragmagora Creative Media
http://www.pragmagora.be
Production Pragmagora Creative Media
http://www.pragmagora.be
https://wn.com/Hydrocracking
Production Pragmagora Creative Media
http://www.pragmagora.be
- published: 07 Jan 2016
- views: 45637
0:35
Refinery Processes: Cracking
Because there is more demand for some distilled products like gasoline, refiners have an incentive to convert heavy liquids into lighter liquids. The term crack...
Because there is more demand for some distilled products like gasoline, refiners have an incentive to convert heavy liquids into lighter liquids. The term cracking comes from the process of breaking up long hydrocarbon molecules into smaller, more useful molecules. The cracking process converts heavy straight run liquids into gasoline. There are multiple versions of the cracking process, and refiners use the process extensively. Cracking is a highly controlled process, so cracking units exist separate from distillation columns. The most common type of cracking is “cat cracking,” named for the use of catalysts, substances added to a chemical reaction to speed up the process.
https://wn.com/Refinery_Processes_Cracking
Because there is more demand for some distilled products like gasoline, refiners have an incentive to convert heavy liquids into lighter liquids. The term cracking comes from the process of breaking up long hydrocarbon molecules into smaller, more useful molecules. The cracking process converts heavy straight run liquids into gasoline. There are multiple versions of the cracking process, and refiners use the process extensively. Cracking is a highly controlled process, so cracking units exist separate from distillation columns. The most common type of cracking is “cat cracking,” named for the use of catalysts, substances added to a chemical reaction to speed up the process.
- published: 12 Jan 2017
- views: 20760
1:16
Hydrocracking Unit
1. Feed Filters: cartridge type 10-25 microns-not recommended due disposal issue or automatic backwash systems 20-30 microns, very flexible & low maintenance bu...
1. Feed Filters: cartridge type 10-25 microns-not recommended due disposal issue or automatic backwash systems 20-30 microns, very flexible & low maintenance but CAPEX intensive, feed filtration is a must to avoid fouling and deposits
2. Feed pump: a beast with discharge pressure up to 200 barg, multistage high head centrifugal with steam turbine / electrical motor, should be never operating below min flow
3. Feed/Reactor Effluent HX: special design due to effluent characteristics & high operating p & T 400°C / 190 barg, traditional or modified “D” TEMA type not recommended due to maintenance / reliability issues, but special type from Lummus Breech-lock high pressure is mandatory due to safe, easy & reliable conferred by new breech lock pressure closure system
4. Fired Heater combined feed recommended due to high thermal efficiency, natural draft or forced/induced usually gas fired. The heat distribution is approximately 70-73% in radiation section and the rest in convection with flame T 1800°C, bridge wall T 780°C and Stack 205°C. Combined fired heater preferred option vs recycle gas furnace because operates in elastic region & if thermal excursion occurs shall remain in elastic region while the gas recycle furnace operates in creep region with negative well known consequences
5. Reactors: ID up to 6.5-6.8 m with 400 mm wall thickness need to be forged ring welded with mass flux impacting the ID, weight of reactor could arrive at 1100 MT just to have an idea of magnitude. Inlet diffuser, top distribution tray quench zone & mixing chamber, outlet collector are mandatory for a robust design
6. Hot HP Separator: vertical vessel operates up to 315°C minimize the downstream air cooler size due to liquid separation, could be filled with a catalyst bed
7. High pressure Air Cooler: cool down 230-250°C the reactor effluent, wash water at inlet is a must & the inlet/outlet manifolds shall assure proper distribution / velocity to avoid corrosion issues
8. Low pressure Separator horizontal type operate at 55-60°C & 25-35 barg provide adequate separation of hc vapor & gas & water-SS lined
9. Recycle Gas Compressor centrifugal not spare due to higher reliability but the CAPEX is high powered by steam turbine / electrical motor
10. Stripper 32 real trays with 70% efficiency, main goal to stripp H2S by steam to avoid downstream corrosion, must maintain a top T with 15-20°C higher than H2O dew point & provision for corrosion inhibitor injection is a must
11. Main Column: 52 real trays, separate gas, LPG, Kerosene, Diesel & UCO, with the main portion of UCO recycle back to 3rd hydrocracker reactor & the rest purged out from system. 1.4 barg / 155°C on top, 2.0 barg / 262°C in bottom. The main technical issue is the management of HPNA (heavy polynuclear aromatics) – at 350C are in solution, at 200-210C start to drop from solution and at lower T 50C shall agglomerate providing fouling.
eBook:
- https://lnkd.in/e9-VJ6b
- https://lnkd.in/evN6h_w
- https://lnkd.in/eF4KWM9
- https://lnkd.in/eUcR2kk
#innovation #sustainability #processengineering #research #energy #training #technology #business #engineering
https://wn.com/Hydrocracking_Unit
1. Feed Filters: cartridge type 10-25 microns-not recommended due disposal issue or automatic backwash systems 20-30 microns, very flexible & low maintenance but CAPEX intensive, feed filtration is a must to avoid fouling and deposits
2. Feed pump: a beast with discharge pressure up to 200 barg, multistage high head centrifugal with steam turbine / electrical motor, should be never operating below min flow
3. Feed/Reactor Effluent HX: special design due to effluent characteristics & high operating p & T 400°C / 190 barg, traditional or modified “D” TEMA type not recommended due to maintenance / reliability issues, but special type from Lummus Breech-lock high pressure is mandatory due to safe, easy & reliable conferred by new breech lock pressure closure system
4. Fired Heater combined feed recommended due to high thermal efficiency, natural draft or forced/induced usually gas fired. The heat distribution is approximately 70-73% in radiation section and the rest in convection with flame T 1800°C, bridge wall T 780°C and Stack 205°C. Combined fired heater preferred option vs recycle gas furnace because operates in elastic region & if thermal excursion occurs shall remain in elastic region while the gas recycle furnace operates in creep region with negative well known consequences
5. Reactors: ID up to 6.5-6.8 m with 400 mm wall thickness need to be forged ring welded with mass flux impacting the ID, weight of reactor could arrive at 1100 MT just to have an idea of magnitude. Inlet diffuser, top distribution tray quench zone & mixing chamber, outlet collector are mandatory for a robust design
6. Hot HP Separator: vertical vessel operates up to 315°C minimize the downstream air cooler size due to liquid separation, could be filled with a catalyst bed
7. High pressure Air Cooler: cool down 230-250°C the reactor effluent, wash water at inlet is a must & the inlet/outlet manifolds shall assure proper distribution / velocity to avoid corrosion issues
8. Low pressure Separator horizontal type operate at 55-60°C & 25-35 barg provide adequate separation of hc vapor & gas & water-SS lined
9. Recycle Gas Compressor centrifugal not spare due to higher reliability but the CAPEX is high powered by steam turbine / electrical motor
10. Stripper 32 real trays with 70% efficiency, main goal to stripp H2S by steam to avoid downstream corrosion, must maintain a top T with 15-20°C higher than H2O dew point & provision for corrosion inhibitor injection is a must
11. Main Column: 52 real trays, separate gas, LPG, Kerosene, Diesel & UCO, with the main portion of UCO recycle back to 3rd hydrocracker reactor & the rest purged out from system. 1.4 barg / 155°C on top, 2.0 barg / 262°C in bottom. The main technical issue is the management of HPNA (heavy polynuclear aromatics) – at 350C are in solution, at 200-210C start to drop from solution and at lower T 50C shall agglomerate providing fouling.
eBook:
- https://lnkd.in/e9-VJ6b
- https://lnkd.in/evN6h_w
- https://lnkd.in/eF4KWM9
- https://lnkd.in/eUcR2kk
#innovation #sustainability #processengineering #research #energy #training #technology #business #engineering
- published: 14 Aug 2022
- views: 2127
0:38
End of production process for the manifacturing of Hydrocracking reactors
This is the end of our production process for the manufacturing of 7 Hydrocracking reactors for a primary Client in Middle East. We are involved in this engagem...
This is the end of our production process for the manufacturing of 7 Hydrocracking reactors for a primary Client in Middle East. We are involved in this engagement as supplier of all the Reactors on this Service within a newly built Grassroots Refinery. In the video, you can see the lifting cover's assembly which will be used on site to Lift and then erect on foundations such reactors. This is an important part of the Project, since we must ensure maximum reliability and safety in Lifting 1000+ tons weight
https://wn.com/End_Of_Production_Process_For_The_Manifacturing_Of_Hydrocracking_Reactors
This is the end of our production process for the manufacturing of 7 Hydrocracking reactors for a primary Client in Middle East. We are involved in this engagement as supplier of all the Reactors on this Service within a newly built Grassroots Refinery. In the video, you can see the lifting cover's assembly which will be used on site to Lift and then erect on foundations such reactors. This is an important part of the Project, since we must ensure maximum reliability and safety in Lifting 1000+ tons weight
- published: 21 Nov 2020
- views: 1241
4:54
Hydrocracker Unit Process (HCU) | Diesel Hydrotreating unit (DHT) - Tour
The Hydrocracking Process in a typical Hydrocracker unit and a Diesel Hydrotreating unit is intricately covered with Animation in the Training module.The variou...
The Hydrocracking Process in a typical Hydrocracker unit and a Diesel Hydrotreating unit is intricately covered with Animation in the Training module.The various equipment like reactors are described in the Diesel Hydrotreating process and Hydrocracking Process Animation. The Hydrocracking process in a Refinery is used to give fuel like Diesel, Naphtha, etc. The Hydrotreating process is used to remove impurities from Diesel feed. The module covers an integrated HCU unit and DHT unit that utilizes a common Make-up gas compressor, Recycle gas compressor and Light Ends recovery system.
https://wn.com/Hydrocracker_Unit_Process_(Hcu)_|_Diesel_Hydrotreating_Unit_(Dht)_Tour
The Hydrocracking Process in a typical Hydrocracker unit and a Diesel Hydrotreating unit is intricately covered with Animation in the Training module.The various equipment like reactors are described in the Diesel Hydrotreating process and Hydrocracking Process Animation. The Hydrocracking process in a Refinery is used to give fuel like Diesel, Naphtha, etc. The Hydrotreating process is used to remove impurities from Diesel feed. The module covers an integrated HCU unit and DHT unit that utilizes a common Make-up gas compressor, Recycle gas compressor and Light Ends recovery system.
- published: 17 Sep 2017
- views: 29948
9:39
TESTING DIFFERENT TYPES OF SUTLI CRACKERS | HYDRO CRACKERS TESTING | DIWALI CRACKERS TESTING| PATAKE
CRACKERS TESTING VIDEOS:
https://www.youtube.com/watch?v=sdYVq8qR22c&list=PLpnnKxgeJp4oVo_RzymYcTH3WjFIjXUUU
FIREWORKS STASHES VIDEOS:
https://www.youtube.com/...
CRACKERS TESTING VIDEOS:
https://www.youtube.com/watch?v=sdYVq8qR22c&list=PLpnnKxgeJp4oVo_RzymYcTH3WjFIjXUUU
FIREWORKS STASHES VIDEOS:
https://www.youtube.com/watch?v=UbubiIzFs10&list=PLpnnKxgeJp4o4m0njGQaIziyBxCpnG1Y_
BUDGET FIREWORKS STASH VIDEOS:
https://www.youtube.com/watch?v=M_BQvC9Q_vU&list=PLpnnKxgeJp4pZtR_vSzkoTX9QXWRxMcAa
SKYSHOTS TESTING VIDEOS:
https://www.youtube.com/watch?v=p0ZSJhVlhs4&list=PLpnnKxgeJp4rXr1oMhwasD1cnCtRE5w7f
CRACKERS VIDEOS IN ENGLISH:
https://www.youtube.com/watch?v=g5K36-X1HH0&list=PLpnnKxgeJp4qxH1m3_TGZy6t_he04Drwi
FIREWORKS EXPERIMENT VIDEOS:
https://www.youtube.com/watch?v=EMTna4AwFXQ&list=PLpnnKxgeJp4o8bGWeRL35dK6kjTOAFajA
CRACKERS TESTING IN SNOW:
https://www.youtube.com/watch?v=Ze1RXbRdHa8&list=PLpnnKxgeJp4pYYT-KUuq_BsffaAYMkY2C
VLOGS:
https://www.youtube.com/watch?v=qyiEk60FFk8&list=PLpnnKxgeJp4oZNh3Oz6vFJGsTkLv0bhPo
HOLI VIDEOS:
https://www.youtube.com/watch?v=ajl6HhF6fQg&list=PLpnnKxgeJp4oEisXCrIK1zQIo_HUOxKCs
Check Out My Channel: https://www.youtube.com/channel/UCkUl3zyUeD2gGhLd9xCyD7w?sub_confirmation=1
Check Out My Live Gaming Channel: https://www.youtube.com/channel/UC8dh2MlMSl9Etv1wotAXQLQ?sub_confirmation=1
Let's play a game, if you have read this line you will have to subscribe and press that bell icon.
#crackers #patakhe #fireworks
https://wn.com/Testing_Different_Types_Of_Sutli_Crackers_|_Hydro_Crackers_Testing_|_Diwali_Crackers_Testing|_Patake
CRACKERS TESTING VIDEOS:
https://www.youtube.com/watch?v=sdYVq8qR22c&list=PLpnnKxgeJp4oVo_RzymYcTH3WjFIjXUUU
FIREWORKS STASHES VIDEOS:
https://www.youtube.com/watch?v=UbubiIzFs10&list=PLpnnKxgeJp4o4m0njGQaIziyBxCpnG1Y_
BUDGET FIREWORKS STASH VIDEOS:
https://www.youtube.com/watch?v=M_BQvC9Q_vU&list=PLpnnKxgeJp4pZtR_vSzkoTX9QXWRxMcAa
SKYSHOTS TESTING VIDEOS:
https://www.youtube.com/watch?v=p0ZSJhVlhs4&list=PLpnnKxgeJp4rXr1oMhwasD1cnCtRE5w7f
CRACKERS VIDEOS IN ENGLISH:
https://www.youtube.com/watch?v=g5K36-X1HH0&list=PLpnnKxgeJp4qxH1m3_TGZy6t_he04Drwi
FIREWORKS EXPERIMENT VIDEOS:
https://www.youtube.com/watch?v=EMTna4AwFXQ&list=PLpnnKxgeJp4o8bGWeRL35dK6kjTOAFajA
CRACKERS TESTING IN SNOW:
https://www.youtube.com/watch?v=Ze1RXbRdHa8&list=PLpnnKxgeJp4pYYT-KUuq_BsffaAYMkY2C
VLOGS:
https://www.youtube.com/watch?v=qyiEk60FFk8&list=PLpnnKxgeJp4oZNh3Oz6vFJGsTkLv0bhPo
HOLI VIDEOS:
https://www.youtube.com/watch?v=ajl6HhF6fQg&list=PLpnnKxgeJp4oEisXCrIK1zQIo_HUOxKCs
Check Out My Channel: https://www.youtube.com/channel/UCkUl3zyUeD2gGhLd9xCyD7w?sub_confirmation=1
Check Out My Live Gaming Channel: https://www.youtube.com/channel/UC8dh2MlMSl9Etv1wotAXQLQ?sub_confirmation=1
Let's play a game, if you have read this line you will have to subscribe and press that bell icon.
#crackers #patakhe #fireworks
- published: 06 Nov 2020
- views: 236357
18:55
وحدة التكسير الحفزي Hydro Cracker Unit
مرحب بيكوا علي قناة السلامة للجميع معاكوا الكيميائي / محمد عاشور قنديل إستكمالا لسلسلة محاضرات تصنيع البترول
محاضرتنا النهاردة هنتكلم فيها عن وحدة الhydro crac...
مرحب بيكوا علي قناة السلامة للجميع معاكوا الكيميائي / محمد عاشور قنديل إستكمالا لسلسلة محاضرات تصنيع البترول
محاضرتنا النهاردة هنتكلم فيها عن وحدة الhydro cracking طبعا أحنا بنعتبرها أهم وحدة في المصاه علشان بتحولي المركبات الزيتية الي منتجات بنسبة تصل الي 97% من كل التغذية بتعت الوحدة والمنتجات دي زي السولار –وقود الطائرات – البنزين – البوتاجاز – مش كدة وبس ......
المصادر
www.arab-oil-naturegas.com
Petroleum refining technology and economics
www.arab-ency.com
Oil-Finding
AN INTRODUCTION TO THE GEOLOGICAE STUDY OF PETROLEUM
https://www.facebook.com/mohamed.ashourkandil
للدعم علي linkedIn
https://www.linkedin.com/in/mohamed-ashour-64499419a/
للدعم علي صفحة السلامة للجميع safety for all
https://www.facebook.com/mohamedashourkandil1977/?modal=admin_todo_tour
للدعم علي صفحة Skills-Development
https://www.facebook.com/Skills-Development-1267699933335584/
للدعم علي التويتر
https://twitter.com/Mohamed07871680
للدعم علي مجموعة منصة العلم والمعرفة للسلامة والكيمياء
https://www.facebook.com/groups/1672085303103648/
للدعم عل موقع الVK
https://vk.com/id576582955
للدعم علي قناة هشام المختار
https://m.you.com/user/hishamokhtaroka
https://wn.com/وحدة_التكسير_الحفزي_Hydro_Cracker_Unit
مرحب بيكوا علي قناة السلامة للجميع معاكوا الكيميائي / محمد عاشور قنديل إستكمالا لسلسلة محاضرات تصنيع البترول
محاضرتنا النهاردة هنتكلم فيها عن وحدة الhydro cracking طبعا أحنا بنعتبرها أهم وحدة في المصاه علشان بتحولي المركبات الزيتية الي منتجات بنسبة تصل الي 97% من كل التغذية بتعت الوحدة والمنتجات دي زي السولار –وقود الطائرات – البنزين – البوتاجاز – مش كدة وبس ......
المصادر
www.arab-oil-naturegas.com
Petroleum refining technology and economics
www.arab-ency.com
Oil-Finding
AN INTRODUCTION TO THE GEOLOGICAE STUDY OF PETROLEUM
https://www.facebook.com/mohamed.ashourkandil
للدعم علي linkedIn
https://www.linkedin.com/in/mohamed-ashour-64499419a/
للدعم علي صفحة السلامة للجميع safety for all
https://www.facebook.com/mohamedashourkandil1977/?modal=admin_todo_tour
للدعم علي صفحة Skills-Development
https://www.facebook.com/Skills-Development-1267699933335584/
للدعم علي التويتر
https://twitter.com/Mohamed07871680
للدعم علي مجموعة منصة العلم والمعرفة للسلامة والكيمياء
https://www.facebook.com/groups/1672085303103648/
للدعم عل موقع الVK
https://vk.com/id576582955
للدعم علي قناة هشام المختار
https://m.you.com/user/hishamokhtaroka
- published: 06 Jul 2020
- views: 4265