Circulation loop-type flow corrosion testing apparatus, and testing method

Abstract

The invention discloses a circulation loop-type flow corrosion testing apparatus, and a testing method. According to the circulation loop-type flow corrosion testing apparatus, a slurry kettle contains a test medium; the bottom of the slurry kettle is provided with stirring blades; an oil bath pool used for controlling the temperature of the test medium is arranged on the wall surface and the bottom surface of the slurry kettle; the lower part of the slurry kettle is connected with a liquid phase circulation component; a liquid phase, a gas phase, and a solid phase are mixed by the liquid phase circulation component, a gas phase component, and a solid phase component, and then are used for impacting a test piece to be tested in a test pipe segment via a nozzle assembly; a circulation loop is formed via communication of the test pipe segment and the slurry kettle; an industrial personal computer is used for recording acquisition pressure, flow rate, and temperature data; water, gas, and solid phase mass flow rate is adjusted to preset values; test mediums at different water, gas, and solid phase ratio are prepared; and continuous impacting on the test piece which is to be tested and is embedded in the upper surface centroid of a rectangular test piece installation rack by the nozzle spray test medium is carried out. The circulation loop-type flow corrosion testing apparatus is capable of satisfying requirements of flow corrosion testing at gas-solid, liquid-solid, and gas-liquid-solid multiphase flow environment, and can be used for testing flow corrosion failure rule of different materials under different working conditions.

Description

technical field [0001] The invention relates to a flow corrosion test device, in particular to a circulation loop type flow corrosion test device and a test method. Background technique [0002] The oil refining industry with crude oil processing and refining as the front end is not only a pillar industry of the national economy, but also an important cornerstone of the safe development of the national energy strategy, which is related to the safe, stable, sustainable and healthy development of the entire national economy. Since the 21st century, during the development process of large-scale equipment, harsh working conditions, and low-quality raw materials, oil refining equipment such as air coolers, heat exchangers, and associated pipelines have generally suffered from deposition blockage, erosion, and pipe burst accidents, causing heavy losses. It has become an important obstacle restricting the safe production of enterprises and the healthy development of the industry. ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems existing in the background technology, the purpose of the present invention is to provide a circulating loop type flow corrosion test device and test method, which solves the problem that the critical characteristics of flow corrosion in the background technology cannot be quantitatively tested, and improves the liquid-solid, The test accuracy of the critical characteristics of flow corrosion in the gas-solid or gas-liquid-solid multiphase flow environment can be measured separately to obtain the critical characteristics and development law of flow corrosion under the synergy of pure erosion, pure wear and erosion-wear, It can provide an important basis for the evaluation of flow corrosion resistance of materials in complex multiphase flow systems, material selection, risk inspection and remaining life prediction of pressure vessels and piping systems

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