An electrochemical oxygen control device for high-pressure hydrothermal system and its preparation method

Abstract

The invention discloses an electrochemical oxygen control device applied to a high pressure hydrothermal system and a preparation method thereof. The electrochemical oxygen control device is composed of a pedestal, a truncated cone-shaped high temperature-resistant insulated cone pad, high temperature-resistant insulated cone sleeves, truncated cone-shaped high temperature-resistant insulated ceramics, truncated cone-shaped solid electrolyte ceramic pipes, spongy inert metal layers, an inert metal piece, electrode leads and the like. Components are assembled to form a cone self-energized seal mechanism. Compared with various types of direct or indirect oxygen control devices applied to the high temperature high pressure hydrothermal system in the prior art, the electrochemical oxygen control device of the invention is faster in response speed, more reliable in performance stability and higher in reuse rate, and can be widely applied to the hydrothermal system of a wider temperature pressure range (250-700 DEG C, and normal pressure of 100Mpa).

Description

technical field [0001] The invention relates to an electrochemical oxygen control device for a high-temperature and high-pressure hydrothermal system and a preparation method thereof. Background technique [0002] Under high temperature and high pressure conditions, the oxygen fugacity / activity in the hydrothermal system is one of the most important physical and chemical parameters of the system, which not only restricts the types and contents of other oxidation and reduction components, but also restricts various processes of the system. Oxygen fugacity / activity has a significant impact on high-temperature and high-pressure fields such as mineral dissolution, oil-to-gas formation, hydrothermal metasomatism, artificial crystal synthesis, high-temperature boiler corrosion, thermal power / nuclear reactor equipment corrosion, and supercritical waste treatment. In-situ control of oxygen fugacity / activity under high-temperature and high-pressure hydrothermal environment can provid...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a device for electrochemically controlling oxygen in a high temperature and high pressure hydrothermal system, which can be used for oxygen fugacity or In-situ direct control of oxygen activity to solve the problem of low working temperature and pressure (difficult to exceed 400°C and 40MPa simultaneously) in the existing similar direct oxygen control technology and the long response time faced by the existing indirect oxygen control technology. Various problems such as doubtful reliability

Images