Fuel production system

Patent metadata

Field	Value
Publication number	US-11761104-B2
Application number	US-202217831667-A
Country	US
Kind code	B2
Filing date	Jun 3, 2022
Priority date	Jun 7, 2021
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

Fuel production system includes: synthesis gas generation unit configured to generate synthesis gas containing hydrogen and carbon monoxide from carbon-containing raw material; fuel production unit configured to produce fuel from synthesis gas generated; water electrolyzer configured to electrolyze water to generate water-electrolyzed hydrogen; hydrogen supply unit configured to supply water-electrolyzed hydrogen generated to synthesis gas generation unit; and controller. The controller is configured to perform: calculating input energy based on first energy possessed by raw material, second energy consumed by water electrolyzer, third energy consumed by synthesis gas generation unit, and fourth energy consumed by fuel production unit; calculating recovered energy based on fifth energy possessed by fuel produced; and determining supply amount of water-electrolyzed hydrogen to be supplied based on input energy and recovered energy calculated.

First claim

The invention claimed is:

1. A fuel production system, comprising:
a synthesis gas generation unit configured to generate synthesis gas containing hydrogen and carbon monoxide from carbon-containing raw material;
a fuel production unit configured to produce fuel from the synthesis gas generated by the synthesis gas generation unit;
a water electrolyzer configured to electrolyze water to generate water-electrolyzed hydrogen;
a hydrogen supply unit configured to supply the water-electrolyzed hydrogen generated by the water electrolyzer to the synthesis gas generation unit; and
a controller including an arithmetic unit and a storage unit, wherein
the controller is configured to perform:
calculating an input energy based on a first energy possessed by the carbon-containing raw material, a second energy consumed by the water electrolyzer when generating the water-electrolyzed hydrogen, a third energy consumed by the synthesis gas generation unit when generating the synthesis gas, and a fourth energy consumed by the fuel production unit when producing the fuel;
calculating a recovered energy based on a fifth energy possessed by the fuel produced by the fuel production unit; and
determining a supply amount of the water-electrolyzed hydrogen to be supplied by the hydrogen supply unit based on the input energy and the recovered energy calculated.

2. The fuel production system according to claim 1 , wherein
the controller is configured to perform:
calculating the second energy based on a generation amount of the water-electrolyzed hydrogen generated by the water electrolyzer and an electrolysis efficiency of the water electrolyzer.

3. The fuel production system according to claim 1 , wherein
the controller is configured to perform:
calculating the second energy based on a power consumption consumed by the water electrolyzer when generating the water-electrolyzed hydrogen.

4. The fuel production system according to claim 1 , wherein
the controller is configured to perform:
calculating an evaluation value of an energy balance based on a difference between a standard input energy for a case where the water-electrolyzed hydrogen is not supplied by the hydrogen supply unit and the input energy for a case where the water-electrolyzed hydrogen is supplied by the hydrogen supply unit, and a difference between a standard recovered energy for the case where the water-electrolyzed hydrogen is not supplied by the hydrogen supply unit and the recovered energy for the case where the water-electrolyzed hydrogen is supplied by the hydrogen supply unit; and
determining the supply amount of the water-electrolyzed hydrogen to be supplied by the hydrogen supply unit based on the evaluation value of the energy balance calculated.

5. The fuel production system according to claim 1 , wherein
the water electrolyzer electrolyzes the water using renewable power.

Assignees

• Honda Motor Co Ltd

Inventors

• Chishima Hiroshi

Classifications

• C10J3/00 Primary

  Production of combustible gases containing carbon monoxide from solid carbonaceous fuels (destructive distillation processes C10B) · CPC title

• C10J3/723 Primary

  Controlling or regulating the gasification process · CPC title

• C25B15/081 Primary

  Supplying products to non-electrochemical reactors that are combined with the electrochemical cell, e.g. Sabatier reactor · CPC title

• C25B1/04

  by electrolysis of water · CPC title

• C25B9/65

  Means for supplying current; Electrode connections; Electric inter-cell connections · CPC title