Sludge pyrolysis and gasification system

• Main Authors: DENG YUCHUAN, YANG YU, JIAO MINGXIN, BAI JISONG, JI XUANYU
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2021
• Subjects: CARBURETTING AIR OR OTHER GASES; CHEMISTRY; FUELS; 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; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a sludge pyrolysis and gasification system which comprises a screw feeder, a nozzle, a sludge heat drying chamber, a stirrer, a sludge pyrolysis and gasification chamber, a catalytic modification tower, a synthesis gas storage tank, a coke combustion chamber, a steam drum, a first cyclone separator, a second cyclone separator, a synthesis gas preheater, a superheater, an air preheater, an air blower and a water treatment workshop; sludge is fed into the nozzle rotating at a high speed through the screw feeder to be granulated and then sprayed into the sludge heat dryingchamber, and the sludge makes direct contact with superheated steam and heat circulating ash under the action of the stirrer for heat exchange; the dried sludge enters the sludge pyrolysis and gasification chamber to generate synthesis gas and coke; and the coke and a part of synthesis gas enter the coke combustion chamber to be combusted, and water is heated into saturated steam. The superheatedsteam and the heat circul