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[CN 201980071777.8] Oil Droplet Flotation Unit with Weir and Hydraulic Mechanism
[CN 201980071777.8] Oil droplet flotation unit with weir and hydraulic mechanism Title: Oil droplet flotation unit with weir and hydraulic mechanism Application number: CN 201980071777.8 Applicant: Sulzer Management Co., Ltd. Application date: 2019-8-22 Patent type: Invention application The present invention relates to a flotation device for separating oil from a dispersion containing water as a continuous phase and oil as a dispersed phase. The device includes a container, the vessel comprises one or more longitudinal cell sections in its longitudinal direction, wherein at least one of the one or more longitudinal cell sections comprises: at least one underflow weir; at least one overflow weir, wherein the overflow weir is positioned at a distance from the underflow weir and displaced in a direction to a downstream end of the vessel; at least one gas injection mechanism, the at least one gas injection mechanism is positioned vertically below the underflow weir or in a channel formed between the underflow weir and the overflow weir; at least one removal mechanism for removing from the liquid level a second portion formed above the liquid level during operation of the flotation device; and at least one hydraulic mechanism, the at least one hydraulic mechanism is used to hydraulically push the second part formed on the liquid level of the container during operation of the flotation device into the removal mechanism by means of a liquid flow, by means of a liquid/gas flow, and/or by means of a gas flow, wherein a respective liquid flow, liquid/gas flow, and/or gas flow is injected by the hydraulic means onto the liquid level of the vessel and/or onto the second portion formed on the liquid level during operation of the flotation device.
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