Process for upgrading and recycling lignite to jointly produce power, steam, coal gas, tar and moulded coal

The invention relates to a process for upgrading and recycling lignite to jointly produce power, steam, coal gas, tar and moulded coal, which is a process realized in such a way that a circulating fluid bed burning boiler is connected in series with a circulating fluid bed coal pyrolysis reactor, a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LIU YIWU, FU MINYAN, WANG SHOUJIAN, YUAN WEIPING, SHAN YUBING, PI JINLIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL BLASTING CARBURETTING AIR OR OTHER GASES CHEMISTRY DRYING DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING LIQUEFIED PETROLEUM GAS LUBRICANTS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY METHODS OF STEAM GENERATION NATURAL GAS NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION STEAM ACCUMULATORS STEAM BOILERS STEAM ENGINE PLANTS STEAM ENGINES STEAM GENERATION SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a process for upgrading and recycling lignite to jointly produce power, steam, coal gas, tar and moulded coal, which is a process realized in such a way that a circulating fluid bed burning boiler is connected in series with a circulating fluid bed coal pyrolysis reactor, a generator and a lignite drying moulding device so as to comprehensively recycle water-rich lignite for supplying power, steam, coal gas, tar and moulded coal. Heat required by lignite pyrolysis gasification is supplied by soot of the circulating fluid bed firing boiler; coal enters the circulating fluid bed pyrolysis reactor for destructive distillation to react with overheat water steam to obtain the coal gas, tar and semicoke; the semicoke enters the circulating fluid bed firing boiler to be used as fuel byproduct steam; the high-medium pressure steam in byproduct is used for power supply, the withdrawn low pressure steam is used for drying water-rich lignite to the water content that moulding requires; and part