To provide a concentration measuring method for a gas hydrate in a manufacturing device for the gas hydrate, measuring a generated concentration of the gas hydrate in line and in situ, in the manufacturing device for manufacturing the gas hydrate by bringing raw gas into gas-liquid contact with raw water.
A densitometer K1 for measuring the concentration of the gas hydrate is provided in a slurry pipe L2 for transferring slurry generated by a generation means, in the manufacturing device for the gas hydrate having the generation means for generating the slurry comprising the gas hydrate and unreacted water, by introducing the raw gas G1 and the raw water W1 into a generator 1 held at prescribed pressure and at a prescribed temperature, to react each other.
NOBUNAGA HISASHI
KANDA NOBUYASU
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Takashi Noguchi
Kazuhiko Saishita