Separation method and separation device

A separation device for separating a desired component from a starting material gas, which is a mixed gas containing the desired component as an object to be separated, the separation device comprising:

• an absorber for absorbing the desired component in the starting material gas into an absorption liquid by bringing the introduced starting material gas and the absorption liquid into contact with each other;
• a regenerator for releasing the desired component from the absorption liquid having absorbed the desired component in the absorber and regenerating the absorption liquid;
• a regeneration-side separator, connected to the regenerator so that a mixed fluid consisting of the desired component gas released in the regenerator and a regenerated absorbing liquid is introduced from the regenerator to the regeneration-side separator, for separating the introduced mix fluid into the desired component gas and the absorption liquid;
• and
• a compressor for compressing the starting material gas to generate compression heat in the starting material gas, wherein:
• the regenerator comprises:
• a regeneration unit, connected to the absorber so that the absorption liquid having absorbed the desired component in the absorber is introduced from the absorber to the regeneration unit, for releasing the desired component from the introduced absorption liquid and regenerating the absorption liquid;
• and a temperature controlling unit for the regenerator, connected to the compressor so that the starting material gas compressed in the compressor is introduced from the compressor to the temperature controlling unit for the regenerator, for heating the absorption liquid introduced into the regeneration unit by performing heat exchange between the introduced starting material gas and the absorption liquid introduced into the regeneration unit, and;
• the absorber is connected to the temperature controlling unit for the regenerator so that the starting material gas, which has been compressed by the compressor and undergone heat exchange with the absorption liquid in the temperature controlling unit for the regenerator, is introduced into the absorber,
• wherein the absorber comprises a laminate, on which an absorption passage layer in which a plurality of absorption passages formed as microchannels are arranged for absorbing the desired component in the starting material gas into the absorption liquid while the introduced starting material gas and the absorption liquid are circulated in a mutually contacted state and a temperature controlling passage layer in which a plurality of temperature controlling passages for the absorber formed as microchannels are arranged for circulating a fluid of which temperature is lower than that of the starting material gas and the absorption liquid circulating in the absorption passages and performing heat exchange between the fluid and the starting material gas and the absorption liquid circulating in the absorption passages, thereby removing the absorption heat generated by the absorption of the desired component from the starting material gas to the absorption liquid in the absorption passages, are laminated.

A separation device for separating a desired component from a starting material gas, which is a mixed gas containing the desired component as an object to be separated, the separation device comprising:

• an absorber for absorbing the desired component in the starting material gas into an absorption liquid by bringing the introduced starting material gas and the absorption liquid into contact with each other;
• a regenerator for releasing the desired component from the absorption liquid having absorbed the desired component in the absorber and regenerating the absorption liquid;
• a regeneration-side separator, connected to the regenerator so that a mixed fluid consisting of the desired component gas released in the regenerator and a regenerated absorbing liquid is introduced from the regenerator to the regeneration-side separator, for separating the introduced mix fluid into the desired component gas and the absorption liquid;
• and
• a compressor for compressing the starting material gas to generate compression heat in the starting material gas, wherein:
• the regenerator comprises:
• a regeneration unit, connected to the absorber so that the absorption liquid having absorbed the desired component in the absorber is introduced from the absorber to the regeneration unit, for releasing the desired component from the introduced absorption liquid and regenerating the absorption liquid;
• and a temperature controlling unit for the regenerator, connected to the compressor so that the starting material gas compressed in the compressor is introduced from the compressor to the temperature controlling unit for the regenerator, for heating the absorption liquid introduced into the regeneration unit by performing heat exchange between the introduced starting material gas and the absorption liquid introduced into the regeneration unit, and;
• the absorber is connected to the temperature controlling unit for the regenerator so that the starting material gas, which has been compressed by the compressor and undergone heat exchange with the absorption liquid in the temperature controlling unit for the regenerator, is introduced into the absorber,
• further comprising an absorption-side separator, connected to the absorber so that a mixed fluid consisting of the absorption liquid having absorbed the desired component in the absorber and the starting material gas from which the desired component has been absorbed in the absorption liquid is introduced into the absorption-side separator, for separating the introduced mixed fluid into the absorption liquid and the starting material gas, wherein
• the absorption-side separator is connected to the regenerator and arranged in a height position not lower than a height of the regeneration-side separator, so that the absorption liquid separated in the absorption-side separator flows to the regenerator by a siphon phenomenon.

A separation device for separating a desired component from a starting material gas, which is a mixed gas containing the desired component as an object to be separated, the separation device comprising:

• an absorber for absorbing the desired component in the starting material gas into an absorption liquid by bringing the introduced starting material gas and the absorption liquid into contact with each other;
• a regenerator for releasing the desired component from the absorption liquid having absorbed the desired component in the absorber and regenerating the absorption liquid;
• a regeneration-side separator, connected to the regenerator so that a mixed fluid consisting of the desired component gas released in the regenerator and a regenerated absorbing liquid is introduced from the regenerator to the regeneration-side separator, for separating the introduced mix fluid into the desired component gas and the absorption liquid;
• and
• a compressor for compressing the starting material gas to generate compression heat in the starting material gas, wherein:
• the regenerator comprises:
• a regeneration unit, connected to the absorber so that the absorption liquid having absorbed the desired component in the absorber is introduced from the absorber to the regeneration unit, for releasing the desired component from the introduced absorption liquid and regenerating the absorption liquid;
• and a temperature controlling unit for the regenerator, connected to the compressor so that the starting material gas compressed in the compressor is introduced from the compressor to the temperature controlling unit for the regenerator, for heating the absorption liquid introduced into the regeneration unit by performing heat exchange between the introduced starting material gas and the absorption liquid introduced into the regeneration unit, and;
• the absorber is connected to the temperature controlling unit for the regenerator so that the starting material gas, which has been compressed by the compressor and undergone heat exchange with the absorption liquid in the temperature controlling unit for the regenerator, is introduced into the absorber,
• wherein:
• the regeneration unit, connected to the absorber so that the absorption liquid having absorbed the desired component in the absorber is introduced into the regeneration unit, comprises a plurality of regeneration passages formed as microchannels for circulating the introduced absorption liquid, thereby releasing the desired component from the absorption liquid and regenerating the absorption liquid;
• the temperature controlling unit for the regenerator, connected to the compressor so that the starting material gas compressed in the compressor is introduced into the temperature controlling unit for the regenerator, comprises a plurality of temperature controlling passages for the regenerator formed as microchannels for circulating the introduced starting material gas and performing heat exchange between the starting material gas and the absorption liquid circulating in the regeneration passages, thereby heating the absorption liquid circulating in the regeneration passages;
• and
• the regenerator comprises a laminate on which a regeneration passage layer in which a plurality of the regeneration passages are arranged and a temperature controlling passage layer in which a plurality of the temperature controlling passages for the regenerator are laminated.