| 摘要 |
The apparatus of this invention is designed for making foamed liquid solutions. In a specific application the foamed liquid is used for removing scale deposits from the interior surfaces of vessels, such as heat exchangers. The apparatus includes a foam chamber with a gas disperser section positioned inside the chamber. Ahead of the foam chamber is a final mixing section with a static mixer installed therein. A liquid concentrate, such as an acid solution, and a diluent liquid, such as water, are passed into the foam chamber. The liquids are mixed in the foam chamber and gas is bubbled into the liquid phase through the disperser section. The flow of gas and liquid into the foam chamber is controlled by flow regulators to achieve a continuous and uniform blending of the gas and liquid phases. From the foam chamber the foamed solution is carried into the final mixing section and passed through the static mixer to obtain a homogeneous cleaning solution, which is discharged into the vessel to be cleaned.
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