A hydrogen boiler based on coal gasification and water decomposition, comprising a steam boiler which comprises an upper furnace and a lower furnace;
- wherein water and steam in the upper furnace are respectively communicated with water and steam in the lower furnace;
- the steam boiler is provided with a casing which has a narrow gap for containing water and a wide wall for heating to generate gas;
- a burner is provided at a middle of a lower part of the lower furnace of the steam boiler, and a steam distributor is provided at a side of the burner;
- a first reactor configured for a secondary reaction of water gas with steam to produce hydrogen is provided at a middle of a middle part of the lower furnace;
- a second reactor configured for secondary reaction of tail gas with steam to produce hydrogen is circular and is circumferentially provided at an upper part of the lower furnace;
- a third reactor configured for a primary reaction of the water gas with the steam to produce the hydrogen is circular and is circumferentially provided at a lower part of an upper furnace of the steam boiler;
- a fourth reactor configured for secondary decomposition of the steam to produce hydrogen is provided at a middle of an upper part of the upper furnace;
- a steam separation and drying device having a cap-shaped interlayer is provided at a tail gas outlet of the upper furnace of the steam boiler;
- a fifth reactor configured for primary reaction of tail gas with steam to produce hydrogen is provided at an upper part of a cavity of the steam separation and drying device;
- a sixth reactor configured for primary decomposition of steam to produce hydrogen is circular and is provided at a lower part of the cavity of the steam separation and drying device;
- a steam controller is provided at a steam outlet of the steam boiler outside the steam separation and drying device;
- a plurality of connectors for water and steam are arranged between the upper furnace and the lower furnace of the steam boiler;
- a CO2 remover is provided at an outer side of the lower furnace of the steam boiler;
- a seventh reactor configured for gasification of coal using steam to produce water gas is provided at the other outer side of the lower furnace of the steam boiler and has two chambers;
- each of the two chambers is provided with a first track and a second track;
- and two layers of material beds are arranged on the first track and second track, respectively, wherein the two layers of material beds are foldable and detachable from the first track and the second track, respectively;
- and
- a calandria reflux heater using inner thermal dissipation is provided at a lower part of an interior of the seventh reactor and is formed by a part of a pipeline for introducing a heat source from fire tail and tail gas discharged from the upper and lower furnaces of the steam boiler;
- the first track is provided along opposite walls of a middle of a lower part of the interior of the seventh reactor, and the second track is provided along opposite walls of a middle of the interior of the seventh reactor.