Oxide skin separation assembly and method

Abstract

The invention relates to an oxide skin separation assembly and an oxide skin separation method, which can efficiently remove oxide skin and eliminate corrosion of oxide skin particles to solid particles of a steam turbine. The separation assembly comprises a separation device, wherein the separation device is used for separating and collecting oxide skin in steam in a steam pipeline; the separation device comprises a sampling pipe, a separator and a collector which are connected in sequence; and the sampling pipe is connected to the steam pipeline, the separator is used for separating gas and solid of the oxide skin in the steam, the oxide skin outlet end of the separator is connected with the collector, and the steam outlet end of the separator is connected to a steam recycling pipeline. The separation method comprises the following steps of positioning and installing the separation device in the oxide skin separation assembly on the steam pipeline, and correspondingly arranging the separation device in a position with the maximum oxide skin concentration in the steam pipeline under the action of gravity and centrifugal force; accessing by virtue of the sampling pipe, separating the oxide skin in the steam by the separator, collecting the obtained oxide skin in the collector, and returning the steam of which the oxide skin is separated to the steam recycling pipeline.

Description

Technical field [0001] The invention belongs to the field of gas-solid two-phase flow, relates to the separation of oxide scale in steam of a generator set, and specifically relates to an oxide scale separation component and method. Background technique [0002] Gas-solid two-phase flow is a flow system composed of two-phase materials, gas and solid. It mainly studies and analyzes the flow pattern, as well as the movement law of the dispersed phase in the continuous phase and its influence on the transfer and action process. [0003] During the operation of thermal power plants, a large amount of oxide scale is often generated in the superheater and reheater. As the thickness increases and the load of the unit changes, the oxide scale will fall off the inner wall of the pipe, and part of it will flow out with the steam, forming a gas-solid two-phase flow of oxide scale and steam in the main steam pipe and the superheated steam pipe. After such a gas-solid two-phase flow enters the...

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Problems solved by technology

[0005] Even so, the above methods still cannot eliminate the occurrence of solid particle erosion problems

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