Hydrate reaction kettle suitable for direct measurement in terahertz spectrum

Abstract

The invention relates to a hydrate reaction kettle suitable for direct measurement in a terahertz spectrum. The reaction kettle comprises a cooling housing which consists of a shell and a through type pipeline transversely arranged in the shell. A seal chamber for accommodating a cooling medium is formed between the outer wall of the pipeline and the shell. A first quartz window and a second quartz window are axially and fixedly arranged in the pipeline at an interval, and the quartz windows are hermetically and fixedly connected with the inner wall of the pipeline. A hydrate generation space is formed between the first and second quartz windows and is hermetically communicated with a gas supply tube and a water supply tube. The reaction kettle further comprises a pressure sensing element and a temperature sensing element for monitoring the pressure and temperature in the hydrate generation space. The reaction kettle integrates production and measurement of hydrate, and the hydrate generated in the reaction kettle is directly measured in a terahertz light path, so that the steps of taking out and tabletting in a low temperature room are canceled, the time and cost are saved, and the probability that a hydrate sample is interfered is avoided.

Description

technical field [0001] The invention relates to a hydrate reaction kettle, in particular to a hydrate reaction kettle suitable for direct measurement of terahertz spectroscopy. Background technique [0002] Natural gas hydrate (commonly known as combustible ice) is an ice-like solid that exists in large quantities in nature. It is rich in a large amount of combustible gases such as methane and ethane. It is estimated that the carbon content of global natural gas hydrate is twice that of the current global proven carbon reserves. , known as "Future Energy". Combustible ice has different mining values ​​depending on its composition and alkane content. Therefore, it is necessary to analyze the composition and content of alkane in combustible ice before mining. The characterization of gas hydrates using terahertz (Tera hz) technology is an emerging characterization method. For example, the document "Treahertz Time Domain Spectroscopy for Structure-II Gas Hydrates" published in...

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Problems solved by technology

[0003] But so far, the experiments done so far are to generate combustible ice in the reactor in advance, then take out the combustible ice from the reactor, press it in a low-temperature chamber, and measure it in the measuring instrument in the low-temperature chamber; The removal from the kettle and the measurement process need to be carried out in a low-temperature or high-pressure low-temperature chamber. The construction and operation of the low-temperature chamber require high costs, and the measurement process is inconvenient. Therefore, the measurement of hydrate by terahertz spectroscopy experiments causing trouble

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