Deep-lying storage method of carbon dioxide

Abstract

The invention discloses a deep-lying storage method of carbon dioxide, which comprises the following steps of: (1) separating the output end of a carbon dioxide storage tank into two ways of a gas phase and a liquid phase reaching an inlet of a high-pressure pump; (2) enabling liquid-phase carbon dioxide to enter the high-pressure pump and a high-pressure pipe manifold and a low-pressure pipe manifold of the high-pressure pump and swiping off air in the pipe manifold so that the same pressure is established in the high-pressure pipe manifold and the low-pressure pipe manifold of the high-pressure pump as that in the carbon dioxide storage tank; (3) starting a shielding pump, carrying out low-pressure leakage to the high-pressure pipe manifold and the low-pressure pipe manifold again and establishing the output pressure of the shielding pump in normal working conditions; (4) circularly cooling the high-pressure pump; and (5) heating the liquid-phase carbon dioxide entering a heat exchanger to about 10-15 DEG C and pumping the carbon dioxide to the position of an underground sealing level by the high-pressure pump until the sealing level is saturated to affuse cement to seal a well. The invention radically solves the problem of processing carbon dioxide emission, and a device adopting the method has simple structure, compactness, lightness and low use cost so that a discarded mined or a low-yield oil well can be recycled.

Description

technical field [0001] The invention relates to a carbon dioxide emission reduction method, in particular to a liquid-phase storage and deep underground method of carbon dioxide, which belongs to the technical field of environmental protection. Background technique [0002] With the continuous growth of population and the continuous development of human industrial and agricultural production and transportation, the emission of gaseous carbon dioxide continues to increase, and the global average temperature continues to rise. If active measures to reduce carbon dioxide emissions are not taken, the global average temperature will continue to increase by 1.4°C to 5.8°C from now to 2100. At that time, Antarctica’s glaciers will melt faster, and sea levels will continue to rise, threatening the survival of many island countries in the Pacific Ocean and the Indian Ocean. Safe, and lead to the prevalence and spread of some diseases related to warm climates such as malaria and dengu...

AI Technical Summary

Problems solved by technology

[0003] The existing recycled liquefied carbon dioxide is generally used in carbon dioxide gas shielded welding and carbonated beverages. Such a recycling method essentially still discharges carbon dioxide into the atmosphere twice, and does not fundamentally solve the problem of carbon dioxide emissions.

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