STORAGE TANK BOTTOM CORROSION PROTECTION SYSTEM

摘要

A system for protecting storage tank soil side bottoms against corrosion includes a pipe system comprising non-perforated inlet pipes and perforated pipes connected thereto. A sleeve container having solid VCI compounds therein is inserted into the perforated pipes. The sleeves are permeable to vapors emitted by the solid VCI compounds and flow through the pipe to a perforation where they are admitted into an area beneath a storage tank so that they can contact the tank bottom (soil side) and protect the same from corrosion. Alternatively, solid SCI compounds can be used in combination with VCI compounds. The corrosion protection system is designed to be used with aboveground storage tanks. This includes, but is not limited to, single bottom tanks: newly installed or existing tanks undergoing bottom replacement or installation of double bottoms. These tanks are located on substrates such as the compacted soil/sand or hard substrates such as concrete, bitumen mixtures and asphalt where channels can be cut into the substrate for installation of the pipe system.

主权项

1. A storage tank corrosion protection system, comprising:
a pipe system comprising one or more perforated pipes located beneath said storage tank; at least one sleeve container having at least one solid volatile corrosion inhibitor (VCI) compound therein, said at least one sleeve capable of being located within at least a portion of said perforated pipes, said sleeve container being initially free of a liquid, and said perforated pipe being free of a blown in VCI powder; optionally at least one solid SCI compound mixed with said solid VCI compound located in said sleeve container; and said sleeve being permeable to vapor emitted from said at least one solid VCI compound but not permeable to said solid VCI compound, said vapor capable of being emitted from said piping system through said perforations of said perforated pipe.