Methanol production system and methanol production method

1. A methanol production system, comprising:

a reformer including a reaction furnace configured to reform methane in a raw material gas to produce a reformed gas containing CO and Hz;

a reduced-gas generator configured to reduce CO2 to produce a reduced gas containing CO;

a methanol-containing gas generator configured to produce a methanol-containing gas which contains methanol from a reformed gas produced in the reaction furnace and the reduced gas produced in the reduced-gas generator; and

a carbon dioxide separator configured to separate out the CO2 from exhaust gas,

wherein the reformer further includes a combustion furnace configured to supply heat generated through burning of a fuel gas to the reaction furnace and to produce the exhaust gas through burning of the fuel gas, and

the methanol production system further comprises a hydrogen supply path through which H 2 is introduced from the methanol-containing gas generator into the combustion furnace.

2. The methanol production system according to claim 1 , comprising:

a reformed-gas introduction path through which H 2 in the reformed gas is introduced from the reaction furnace into the reduced-gas generator.

3. The methanol production system according to claim 1 , comprising:

a methanol introduction path through which the methanol-containing gas is introduced from the methanol-containing gas generator into the reduced-gas generator.

4. The methanol production system according to claim 1 , wherein the reduced-gas generator further uses ethanol.

5. The methanol production system according to claim 1 , wherein the reduced-gas generator produces CO and H 2 O 2 from H 2 O and the CO 2 .

6. The methanol production system according to claim 1 , comprising:

an acetic acid generator configured to produce acetic acid from methanol in a methanol-containing gas produced in the methanol-containing gas generator and CO in the reduced gas.

7. The methanol production system according to claim 1 , wherein the reduced-gas generator is an electrolytic device.

8. A methanol production method using the methanol production system according to claim 1 , comprising:

a reaction step of oxidizing methane in a raw material gas to produce a reformed gas containing CO and H 2 ;

a reduced-gas production step of reducing CO 2 to produce a reduced gas containing CO; and

a methanol-containing gas production step of producing a methanol-containing gas which contains methanol from a reformed gas produced in the reaction step and the reduced gas produced in the reduced-gas production step,

a carbon dioxide separation step of separating out the CO 2 from exhaust gas, and

a combustion step of generating heat used in the reaction step by burning a fuel gas to produce the exhaust gas through burning of the fuel gas,

wherein, in the combustion step, the excess H 2 in producing the methanol-containing gas is further used to perform burning.

9. The methanol production method according to claim 8 , wherein, in the reduced-gas production step, a part of H 2 in the reformed gas produced in the reaction step is further used.

10. The methanol production method according to claim 8 , wherein, in the reduced-gas production step, a part of the methanol-containing gas produced in the methanol-containing gas production step is further used.

11. The methanol production method according to claim 8 , wherein, in the reduced-gas production step, ethanol is further used.

12. The methanol production method according to claim 8 , wherein, in the reduced-gas production step, CO and H 2 O 2 are produced from H 2 O and the CO 2 .

13. The methanol production method according to claim 8 , further comprising:

an acetic acid production step of producing acetic acid from methanol in the methanol-containing gas produced in the methanol-containing gas production step and CO in the reduced gas.

14. The methanol production method according to claim 8 , wherein the reduced-gas production step uses an electrolytic reduction reaction.