[0:02]Dominion environmental services.
[0:07]Dominion automatic tank cleaning services with crude oil recovery.
[0:14]Dominion has the most technologically advanced process in the field of automatic tank cleaning service. Which not only accomplishes the effective recovery of hydrocarbons, but also reduces execution times and cleaning costs in a safe manner. An automated process in permanent evolution, with maximum environmental safety throughout the process for workers and the environment in all the different phases of its installation and operation. The process begins with the mobilization and installation of the containerized units in accordance with customer's requirements and the characteristics of each tank. The Dominion system makes it possible for highly experienced, well-trained, and extremely qualified staff to operate in the safest possible way in potentially hazardous environments.
[1:13]In order to guarantee a safe process, nitrogen is first pumped into the tank to reduce the oxygen concentration to less than 8%. Thus eliminating all possible ignition risks, so that work can be carried out in a completely safe environment.
[1:36]The filtration modules connected to the tank that's going to be cleaned by bottom water drains and other suction points. The product passes through the different mechanical filters, the unit has.
[1:55]From the filtration module, it moves along to the suction module, which mainly consists of different types of suction pumps and a heat exchanger.
[2:09]This cleaning process consists of fluidizing and diluting oil sludge using light crude oil or similar diluent. The entire process is continuously monitored from this PLC module, using multiple safety devices to ensure it's completed in a safe manner. Nozzles consisting of high impact, low pressure jets at 10 to 15 bar pressure, are placed at the top of the tank. Their high flow turns oily sludge and slurry into liquid. These nozzles are activated pneumatically. There are three possible ways to install these nodules on the tank's roof. By using an ATEX zero zone certified cold cutting machine to make the necessary openings. By using already existing openings in the roof, such as manholes, atmospheric relief valves, etc., or by removing some of the supports from the tank's floating roof and placing the nozzles in their place. This technology can also be used with fixed roof tanks by installing nozzles on the tank's roof and shell. Finally, the filtered crude oil travels to the recirculation module, where pressure is increased between 12 to 15 bar, thus propelling the product to the nozzles positioned on the tank's roof. Should a more efficient filtration of the recovered product be required? A three-phase centrifugation module is used to separate the water and inorganic sediments from the crude oil. This stage is optional and is mainly applied in slop tanks or tanks with high inorganic content. After this, washing is carried out using diesel fuel, LCO, etc. where available. This cleans the internal structures of the tank and the bottom as much as possible, thus achieving more efficient degreasing. The process ends by washing the tank with hot water. Dominion has the capacity to further complement the service by using ATEX centrifuge equipment. Optionally, in specific instances, the last water washing may be performed using an exclusive, biodegradable degreasing agent exclusive to Dominion. In this way, a non-toxic, gas-free atmosphere is achieved, making it safer for workers to enter the tank after the process has been completed. The tank is opened, ventilated, and the insoluble remains such as scales, sand, rust, etc. that have settled at the bottom are extracted, either manually or by mechanical means. The main advantages the Dominion system offers are the combination of cleaning and the recovery of more than 95% of hydrocarbons contained in the sludge. A reduction in costs and execution times by 70%. Maximum safety during the entire process, thus minimizing the exposure of workers to toxic and potentially explosive environments. Our process reduces waste and minimizes the consumption of resources and environmental pollution. Dominion automatic tank cleaning. Dominion environmental services.
