Reforming device and method for manufacturing chemical products
A reforming device ( 10 ) according to the present invention has a compressor ( 11 ), a first heat exchanger ( 12 ), a desulfurization device ( 13 ), a reformer ( 14 ), a raw material gas branching line (L 11 ) that extracts a compressed natural gas ( 21 ) from a downstream side of the desulfurization device ( 13 ) with respect to the flow direction of the natural gas ( 21 ) and supplies the natural gas ( 21 ) to the reformer ( 14 ), and a flue gas discharging line (L 12 ) that discharges a flue gas ( 22 ) generated in the reformer ( 14 ), wherein the first heat exchanger ( 12 ) is provided in the flue gas discharging line (L 12 ), and the flue gas ( 22 ) is used as a heating medium of the compressed natural gas ( 21 ).
1. A reforming method comprising:
supplying a raw material gas containing hydrocarbon and sulfur to a first compression unit through a raw material gas supply line;
compressing the raw material gas in the first compression unit to produce a compressed raw material gas;
desulfurizing sulfur content contained in the compressed raw material gas in a desulfurization unit to produce a compressed natural gas;
extracting a part of the compressed natural gas through a raw material gas branching line;
reforming the hydrocarbon in the unextracted compressed natural gas to generate a reformed gas containing either one or both of H2 and CO or H2 and CO2 in a reforming unit including a burner;
discharging a flue gas which is generated by combustion in the burner through a flue gas discharging line;
heat-exchanging, in a fourth heat exchanger, the compressed raw material gas with the extracted part of the compressed natural gas to produce a heated compressed raw material gas;
heat-exchanging, in a first heat exchanger, the heated compressed raw material gas with the flue gas supplied through the flue gas discharging line as a heating medium;
heat-exchanging, in a third heat exchanger, feed water to be supplied to a steam generation unit with the flue gas after the heat exchange in the first heat exchanger;
heat-exchanging, in a second heat exchanger, combustion air used for the combustion with the flue gas after the heat exchange in the third heat exchanger; and
supplying the extracted part of the compressed natural gas after the heat exchange in the fourth heat exchanger to the burner as a combustion fuel for heating in the reforming unit.
2. The reforming method according to claim 1 ,
wherein ammonia is synthesized using the reformed gas in an ammonia synthesis unit.
3. The device for manufacturing chemical products according to claim 1 ,
wherein urea is synthesized using the reformed gas in a urea synthesis unit.
4. The device for manufacturing chemical products according to claim 1 ,
wherein methanol is synthesized using the reformed gas in a methanol synthesis unit.