High-temperature and high-confining-pressure fluid-solid mutual effect testing device and testing method

Abstract

The invention discloses a high-temperature and high-confining-pressure fluid-solid mutual effect testing device and a testing method. The high-temperature and high-confining-pressure fluid-solid mutual effect testing device comprises a pressure container, wherein two axial pressing rods, which are symmetrically sealed, are arranged in the pressure container in the horizontal direction; a test sample is arranged between the two pressing rods; a heating device for heating the test sample sleeves the outer side of the pressure container; a liquid pressing hole and an optical window are arranged on the surface of the pressure container; the heating device is arranged in a groove of a base; a temperature sensor is arranged on a contact surface between the heating device and the pressure container; theliquidpressing hole is communicated to a test sample placement part; and the optical window is aligned to the center of the test sample and is provided with an optical measurement system for observing a test sample light spectrum. According to the testing device and testing method, by carrying out chemical reaction and light spectrum measurementon the test sample under high-confining-pressure and high-temperature conditions, the micro morphology characteristics and spectrum collection of solid samples can be observed in situ under high-temperature high-pressure fluid condition, the interaction product of the solid and fluid can be measured in situ, measured data is closer to actual data, the measured data is more accurate and reliable and the accurate practice, and utilization and analysis of the test sample can be more easily guided.

Description

technical field [0001] The invention relates to a high temperature and high confining pressure fluid-solid interaction test device and a test method, belonging to the technical field of high temperature and high pressure test devices. Background technique [0002] High-temperature and high-pressure experiments are important research methods in many scientific fields, such as planetary and earth sciences, condensed matter physics, chemistry, and materials science, and have achieved many important research results. In earth science, high-temperature and high-pressure experiments provide a large amount of experimental data for people to understand the material composition and state of the earth's interior, as well as rock and mineralization. For example, through high-temperature and high-pressure experimental studies on mantle rocks, it is recognized that the seismic wave discontinuity at about 650 km in the mantle is caused by the phase transition of the olivine / pyroxene-perov...

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Problems solved by technology

[0006] (1) Under the hydrostatic pressure conditions of high temperature and high pressure, it is difficult to accurately control the temperature and pressure independently; (2) The existing autoclave system has a large volume, it is difficult to connect with microscopes and various spectrometers, and it is impossible to observe the solid sample in situ Surface topography features and inability to measure reaction products in situ by means of spectroscopy

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