High pressure testing reactor

Test high-pressure reactor

Beijing Century Senlanghigh pressuretestReaction kettleUsed to study the dissolution phenomenon during the geological burial process of CO2. Through static dissolution experiments, the CO2 water rock interaction of the target formation was studied. ICP-OES detection and whole rock mineral testing were used to analyze the CO2 water rock reaction occurring in the rock core. The main dissolved minerals in the rock core were dolomite and feldspar minerals, with dolomite dissolution being more severe than feldspar. The reaction rate of dolomite slowed down over time and tended to equilibrium after 30 days of reaction. Feldspar dissolution mainly produced quartz, kaolinite, and other clay minerals. The dissolution rate of core minerals increases with the increase of pressure, mainly due to the study of the increase or decrease in solution acidity caused by the solubility of CO2 in formation water without pressure.

high pressuretestReactor testing conditions: pressure of 42MPa, temperature of RT~300 ℃, can also be used for supercritical geological fluid simulation experiments. Supercritical geological fluid: A non condensable high-density fluid with a temperature and pressure above the critical temperature and critical pressure, respectively, is called a supercritical fluid. There are a large number of geological fluids deep underground, among which water is one of the most important components. Water exhibits multiple phases under different temperature and pressure conditions: it is ice at low temperatures, water at room temperature, and turns into water vapor at temperatures above 100 ℃; When the temperature exceeds 374.3 ℃ and the pressure exceeds 22.1Mpa, water becomes the fourth phase - supercritical water. Below 10-18 kilometers underground, both the supercritical temperature and pressure of water can be reached simultaneously. According to current estimates of pressure and temperature inside the Earth, fluids are in a supercritical state in the lower crust and deep layers.

When water is in a supercritical state deep underground, once a rupture occurs due to tectonic activity, causing a sudden drop in pressure and temperature, supercritical water will undergo a phase transition explosion and become water vapor, which is actually a process of rapid volume expansion. The volume of water vapor of the same weight is hundreds of times larger than that of supercritical water.