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The process of Crude Oil Storage Tank Cleaning is somewhat a challenge to many. It is a comprehensive activity involving the removal of the bottom crude oil sludge, treating the oil sludge and washing the receptacle . There is the conventional method of washing it and several scientific methods that come up every day as research goes on.
Starting with the conventional method, the sludge is manually removed from the tank bottom. It may take about 100 days depending on the number of personnel working on it and the machines being used. With more operators it can even take 2 months. At times tank cleaning machines that are remotely operated are used; this can take double the time taken above.
The second step in the conventional method is to treat the oil sludge. This involves separating the sludge into three components; recovered oil, solids and waste water. This is done inside the receptacle.
Once all this has been done, the receptacle is subjected to high pressure cleaning to wash its walls, roof and floor. A process called sand blasting is then employed so as to de-rust and d-paint the chamber. This stage can take around 50 days for one team and 30 days if two teams are working simultaneously on it. The outer walls of the storage chamber will require another 1 t o2 months de-painting and de-rusting. One can choose to sue the more expensive but effective ultra-high pressure cleaning so as to save time.
There is a one step cleaning method that has been developed and used by some companies. In this process, diesel is pumped through nozzles in a jet fixed on the receptacle's roof. This washes the sludge dissolving it after which the sludge/diesel mixture is pumped out of the storage chamber.
Even though this method is efficient and faster, some sludge still remains at the bottom of the storage chamber and requires time to dissolve. This may takes around 4 months to dissolve for a 100,000KL tank. It also requires a temporary storage tank to handle the diesel/sludge mixture pumped out of the chamber in order to clean the receptacle.
The other method is a two step washing procedure. This is very advanced and way more effective than the first two. Very fast in cleaning and recovers more crude oil in the process. The first step is the use of a rotary jet mixer that is submerged into the sludge. It thoroughly mixes the sludge suspending it in the solution and recovers about 90% of the hydrocarbons. The machine needs 7 days to set up and only 3 days to complete the mixing.
This is followed by removing the remaining 10% sludge that is then very soft in comparison to the hard crust in the other methods. Given the violent mixing it has undergone, the sludge will not be a hard task to remove. This method of Crude Oil Storage Tank Cleaning is the most efficient and very time saving comparing 6 months for other methods and 10 days it uses.
Starting with the conventional method, the sludge is manually removed from the tank bottom. It may take about 100 days depending on the number of personnel working on it and the machines being used. With more operators it can even take 2 months. At times tank cleaning machines that are remotely operated are used; this can take double the time taken above.
The second step in the conventional method is to treat the oil sludge. This involves separating the sludge into three components; recovered oil, solids and waste water. This is done inside the receptacle.
Once all this has been done, the receptacle is subjected to high pressure cleaning to wash its walls, roof and floor. A process called sand blasting is then employed so as to de-rust and d-paint the chamber. This stage can take around 50 days for one team and 30 days if two teams are working simultaneously on it. The outer walls of the storage chamber will require another 1 t o2 months de-painting and de-rusting. One can choose to sue the more expensive but effective ultra-high pressure cleaning so as to save time.
There is a one step cleaning method that has been developed and used by some companies. In this process, diesel is pumped through nozzles in a jet fixed on the receptacle's roof. This washes the sludge dissolving it after which the sludge/diesel mixture is pumped out of the storage chamber.
Even though this method is efficient and faster, some sludge still remains at the bottom of the storage chamber and requires time to dissolve. This may takes around 4 months to dissolve for a 100,000KL tank. It also requires a temporary storage tank to handle the diesel/sludge mixture pumped out of the chamber in order to clean the receptacle.
The other method is a two step washing procedure. This is very advanced and way more effective than the first two. Very fast in cleaning and recovers more crude oil in the process. The first step is the use of a rotary jet mixer that is submerged into the sludge. It thoroughly mixes the sludge suspending it in the solution and recovers about 90% of the hydrocarbons. The machine needs 7 days to set up and only 3 days to complete the mixing.
This is followed by removing the remaining 10% sludge that is then very soft in comparison to the hard crust in the other methods. Given the violent mixing it has undergone, the sludge will not be a hard task to remove. This method of Crude Oil Storage Tank Cleaning is the most efficient and very time saving comparing 6 months for other methods and 10 days it uses.
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You can visit the website www.petro-genesis.com for more helpful information about Effective Crude Oil Storage Tank Cleaning Procedures
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