Method and system for producing combustible gas from domestic waste through pyrolysis gasification

• Main Authors: JIA YIMAN, ZHANG ANQIANG, WU DAOHONG, XIAO LEI
• Format: Patent
• Language: English
• Published: 29.07.2015
• Subjects: CARBURETTING AIR OR OTHER GASES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FUELS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LUBRICANTS; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; 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

The invention provides a method and a system for producing combustible gas from domestic waste through pyrolysis gasification. The method for producing combustible gas from domestic waste through pyrolysis gasification comprises the following steps: conducting drying treatment and pyrolysis treatment on the domestic waste in a regenerative rotary bed to obtain high-temperature oil gas rich in water vapor and waste coal, utilizing the high-temperature oil gas rich in water vapor as a gasifying agent to conduct gasification treatment on the waste coal to obtain gasified mixture gas, and conducting dust removing and purifying treatments on the gasified mixture gas to obtain the combustible gas. According to the method for producing the combustible gas from domestic waste through pyrolysis gasification, the process flow is short, the running cost is low, the resource recovery and energy regeneration level is high, the economic benefit of the product is good, secondary pollution is less, and industrialization and scale management are facilitated.