Thermal accumulating type combined heat-carrying biomass charcoal gas-oil co-production pyrolysis system and using method thereof

Abstract

The invention relates to a thermal accumulating type combined heat-carrying biomass charcoal gas-oil co-production pyrolysis system and a using method thereof. The system comprises a biomass raw material preparation device, a biomass pyrolysis device, a product collecting device and a waste gas processing device, wherein the biomass pyrolysis device comprises a drying ash removal furnace, a moving bed pyrolysis furnace and a heat-carrying medium heating device; and when biomass pyrolysis is carried out, a pre-drying process and a biomass volatile component pyrolysis process are respectively carried out in the drying ash removal furnace and the moving bed pyrolysis furnace, two different heat-carrying mediums are adopted in the two processes, i.e. low-temperature flue gas is used as the heat-carrying medium in the drying process, self-produced coal gas is used as the heat-carrying medium in the pyrolysis stage, and a heat accumulating type heat exchange method is adopted between the high-temperature flue gas and heat-carrying coal gas. In addition, gaseous products generated in the biomass pre-drying process and biomass volatile component pyrolysis process are respectively treated and not mixed. The thermal accumulating type combined heat-carrying biomass charcoal gas-oil co-production pyrolysis system has the comprehensive effects that the quality of pyrolysis products is substantially increased, the heat efficiency of the system is substantially increased, a coal gas processing device is simplified, the power consumption for coal gas treatment is substantially reduced, and the deep processing cost of liquefied products is reduced.

Description

Technical field [0001] The invention relates to a regenerative combined heat-carrying biomass charcoal-gasoline co-production pyrolysis system and its use method, especially a combination of flue gas and self-produced coal gas for heat-carrying, and the heat-carrying mass of self-produced coal gas adopts heat storage A regenerative combined heat-carrying biomass charcoal-gasoline co-production pyrolysis system with conventional heating technology and a method for low-temperature pyrolysis of biomass using the system. Background technique [0002] At present, the known biomass pyrolysis furnaces are divided into two categories according to the heat carrying mode, one is solid heat carrying, and the other is gas heat carrying. [0003] Solid heat transfer technology is divided into solid heat transfer moving bed technology and solid heat transfer fluidized bed technology. The main disadvantage of solid heat transfer moving bed technology is the complicated separation structure...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a thermal storage combined heat-carrying biomass charcoal-gasoline cogeneration pyrolysis system and its use method, which use self-produced coal gas as the heat carrier, and the heat carrier adopts regenerative heating technology, so as to solve the current problems. There are technical defects, etc.

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