High-temperature and high-pressure reaction kettle capable of monitoring resistance in situ

Abstract

The invention discloses a high-temperature and high-pressure reaction kettle capable of monitoring resistance in situ, and relates to the technical field of reaction kettles, the reaction kettle comprises a reaction kettle device, a resistance monitoring device, a temperature control system and a pressure control system, the reaction kettle device comprises a kettle body and a kettle cover; the temperature control system is arranged outside the kettle body and is used for sensing and controlling the temperature in the kettle body; the resistance monitoring device comprises two electrode tubes and a resistance display tester, the two electrode tubes are symmetrically arranged on the outer wall of the kettle body, an electrode is arranged in the center of each electrode tube, one end of each electrode penetrates through the side wall of the kettle body and extends into the kettle body, and the other end of each electrode is connected with the resistance display tester. The other end of the electrode is provided with an electrode clamp, and the electrode clamp is connected with a display resistance tester through a test line. The reaction kettle is high in automation degree and good in stability and sealing performance, real-time resistance monitoring is carried out on a solution in the kettle body in the reaction process, the balance state of a water-rock chemical reaction in the kettle body is conveniently judged, and therefore a supercritical / subcritical water-rock reaction mechanism is researched and analyzed more comprehensively.

Description

technical field [0001] The invention relates to the technical field of reaction kettles, in particular to a high temperature and high pressure reaction kettle capable of monitoring resistance in situ. Background technique [0002] Compared with traditional geothermal resources, supercritical geothermal resources have greater development potential. Under subcritical (temperature>300℃) and supercritical conditions (temperature>374℃, pressure>22.1MPa), the water-rock geochemical reaction is more severe. Mineral dissolution and precipitation are accompanied by changes in rock permeability, which in turn lead to changes in fluid flow and heat transfer properties. To quantitatively analyze these interactions through numerical simulation, it is necessary to understand the rules of mineral dissolution and precipitation in the super / subcritical state, and the thermodynamic and kinetic behavior of minerals. Therefore, the laboratory simulation test of super / subcritical wate...

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Problems solved by technology

However, the super / subcritical water-rock chemical reaction test environment is harsh, requiring the test device to maintain high temperature and high pressure for a long time

At present, the commonly used reactors have unsatisfactory performance in temperature rise, temperature control and heat preservation, and cannot meet the test requirements.

In addition, the judgment of the equilibrium state of the water-rock chemical reaction in the reactor and the accuracy of the data depend on the intuitive and accurate judgment of the process of the water-rock reaction during the experiment. Real-time monitoring of the resistance of the reaction solution in the reactor is a preferred solution. None of the existing reactors can meet the test requirements

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