Testing device and testing method for reaction of carbon dioxide and hot dry rock powder

Abstract

The invention discloses a testing device and a testing method for reaction of carbon dioxide and hot dry rock powder, relating to the testing technology of geological storage of carbon dioxide in deep earthcrust. The testing device is composed of a carbon dioxide gas pressurization system (10), a core reaction system (20), a cold well gas-water separating system (30) and an oil bath constant temperature system (40), wherein the core reaction system (20) comprises a pressure compensating vessel (21), a reaction kettle (22), an adsorption kettle (23), a PID (Proportion Integration Differentiation) automatic pressure control valve (24) and a gas guide pipe (25); and the cold well gas-water separating system (30) comprises a cold well (31), a secondary vacuum buffer container (32), a primary vacuum buffer container (33), a vacuum pump (34) and a common valve (35). Data measurement is simple, the parameters such as temperature and pressure are only recorded, the consumption amount of carbon dioxide in the reaction can be calculated, the testing efficiency can be effectively improved and the device and the method can provide reliable theory and testing basis for the technology of carbon dioxide geological storage.

Description

technical field [0001] The invention relates to a test technology for geological sequestration of carbon dioxide in the deep part of the earth's crust, in particular to a test device and method for simulating the reaction of carbon dioxide-hot dry rock powder under high temperature and high pressure conditions. Background technique [0002] The development and utilization of energy resources has not only promoted the rapid development of society, but also caused increasingly serious environmental problems. Among them, the use of fossil fuels is currently the largest source of gas pollution and the largest source of emissions of the greenhouse gas carbon dioxide. The emission of carbon dioxide will lead to global warming, which will cause negative environmental and ecological effects. Therefore, effective measures must be taken to control the emission of carbon dioxide and slow down the aggravation of the greenhouse effect. The enhanced geothermal system (EGS) using carbon d...

AI Technical Summary

Problems solved by technology

At present, there is no unified understanding of the optimal temperature and pressure for the reaction of carbon dioxide and hot dry rock powder. The reaction process cannot be accurately measured, the calculation of the amount of carbon dioxide consumed in the actual reaction cannot achieve sufficient accuracy, and the calculation method is not mature enough

[0003] The existing technology at home and abroad for the reaction test device of carbon dioxide under high temperature and high pressure, the temperature range is limited to about 200 ℃, and the operation process of the test is relatively cumbersome, the safety is not high, and the large data measurement error leads to rough test results, which are not convincing. Not strong and very expensive

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