BENDING TUBE EFFECT ANALYSIS EXPERIMENTAL DEVICE WITH VERTICAL U-TUBE AND HORIZONTAL TUBE FOR SAFETY ANALYSIS OF PIPELINE TRANSPORT PROCESS IN CO2 MARINE GEOLOGICAL STORAGE

摘要

PURPOSE: Simulation apparatus for verifying the influence of a bending tube on a pipeline transporting process in carbon dioxide marine geological storage is provided to reduce negative influences on a transporting process caused by changes in external environment. CONSTITUTION: Simulation apparatus includes a first evaporator (2), a first reciprocating high pressure compressor (3), a first accumulator (4), a first pressure controller (5), a high pressure heat exchanger (6), a liquid receiver (7), a first flux control valve (10), a reactor (11), an impurity flowing unit, and an experimental unit (23). The first evaporator exchanges heat between liquid carbon dioxide and the atmosphere to obtain gaseous carbon dioxide. The first reciprocating high pressure compressor compresses the gaseous carbon dioxide. The first accumulator reduces the pressure ripples of the gaseous carbon dioxide. The first pressure controller decompresses the gaseous carbon dioxide. The high pressure heat exchanger changes the decompressed carbon dioxide into liquid carbon dioxide. The liquid receiver receives the liquid carbon dioxide through the high pressure heat exchanger and protects the liquid carbon dioxide from changing into the gaseous carbon dioxide. The first flux control valve controls the flux of the liquid carbon dioxide through the liquid receiver. The reactor receives the liquid carbon dioxide through the first flux control valve and water in order to implement a hydrate reaction. The impurity flowing unit transfers the carbon dioxide through the reactor and bypasses gaseous impurities. Two horizontal tubes (23a,23b) and two vertical U-tubes (23c,23d) are serially connected in the experimental unit.