To provide a gas purification apparatus capable of enhancing concentration of flammable gas and capable of reducing a pressure of a liquid to which the pressure above atmospheric pressure is applied, in a process of absorbing for separation an impurity in the liquid from a mixed gas of the flammable gas and the impurity.
A digestion gas purification apparatus 200 produces a gas-mixed liquid W2 obtained by mixing water W1 with a raw material gas G1 after the raw material gas is formed in a microscopic bubble state, pressurizes the gas-mixed liquid W2 to dissolve the raw material gas G1 in the water W1, and removes from the gas-mixed liquid W2 an undissolved gas G2 not dissolved in the gas-mixed liquid W2 among the raw material gas G1. The gas-mixed liquid W2 is pressurized at liquid pressure lower than a dissolving pressure value of the raw material gas G1. In the bubble diameter of a microscopic bubble, a total pressure of a pressure in bubble due to surface tension of the microscopic bubble of the raw material gas G1 and the liquid pressure for pressuring the gas-mixed liquid W2 becomes equal to or larger than the dissolving pressure value.
TAKEMOTO TAKESHI
Sekiya Mitsuo
Toshiaki Watanabe
Next Patent: INK COMPOSITION FOR BALLPOINT PEN