Production system for organic substance, production device for organic substance, and method for producing organic substance

A production device for an organic substance to be used in connection with a gasification furnace configured to generate an exhaust gas, comprising:

• a first raw material gas generation unit configured to generate a first raw material gas containing carbon monoxide from the exhaust gas;
• a culture tank to which the first raw material gas is supplied and in which an organic substance-containing solution is generated by the action of gas-utilizing bacteria;
• a recovery unit configured to recover the organic substance from the organic substance-containing solution supplied from the culture tank;
• and
• a treatment unit configured to obtain a second raw material gas containing carbon monoxide from a waste liquid generated upstream of the culture tank.

A method for producing an organic substance, comprising:

• a first raw material gas generation step of generating a first raw material gas containing carbon monoxide from an exhaust gas;
• a culture step of the first raw material gas being supplied and generating an organic substance-containing solution by the action of gas-utilizing bacteria;
• a recovery step of recovering the organic substance from the organic substance-containing solution obtained in the culture step;
• and
• a treatment step of obtaining a second raw material gas containing carbon monoxide from a waste liquid generated upstream of the culture step.