Abstract: Methods for cleaning industrial tanks are disclosed in which a fast temporary seal is applied to a manway entry into a tank to be cleaned. A robotic tank cleaning system is introduced through the temporary seal into the tank. The tank interior is sprayed with diluent to remove liquid and solid volatile organic compound (VOC) generating residue. VOC's are removed from the tank by repetitive diesel and water/surfactant fogging until a safe, legal level of VOC's remains in the tank atmosphere.
Abstract: A cleaning system capable of passing through a manway entry point into a storage tank to be cleaned is disclosed. A remotely controllable robotic cannon for spraying diluent or water is provided which has a light source and CCTV camera axially mounted on the cannon nozzle assembly. Mounting systems permit sidewall or overhead deployment of the system as desired. Operators situated remotely can view and control the cleaning system via TV monitors.
Abstract: A system for cleaning storage tanks is disclosed having a remotely controlled collapsibile tracked robotic tank entry vehicle, a closed circuit television system for observation including controllable light sources and an articulatible nozzle, also remotely controllable. The nozzle is capable of rotation fully 360 degrees in each of two planes perpendicular to each other under hydraulic control fully independent of its source of cleaning fluid for delivery to the tank.
Type:
Grant
Filed:
November 18, 1994
Date of Patent:
June 24, 1997
Assignee:
Landry Service Co. Inc.
Inventors:
Kenneth Charles Landry, Kermit Ray Arnold
Abstract: Preheated diluent and steam are introduced into a container containing waste material typically comprised of a sludge mixture of liquid and solid material including hydrocarbons. The material is thereby heated and its viscosity reduced to form a pumpable slurry. The slurry is pumped out of the container and its viscosity is adjusted to the optimum for separating the solids and liquids. The solids are then separated from the liquid, any valuable material in either the solids and the liquid are recovered and the rest disposed of.
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