Fully modularized mid-feed pyrolysis reactor with simultaneous multi-feed capabilities
A fully modular assembled pyrolysis reactor with multiple feeding points includes modular upper and lower vessels. The lower vessel is equipped with a first biomass input unit, and inside the lower vessel, there is an integrated rotatable grate. The outlet end of the input pipe of the first biomass input device is formed at the top center of the grate, so that the grate's surface forms the core reaction zone of the pyrolysis reactor. The upper vessel is equipped with additional biomass input units, and the outlet end of the input pipe of the additional biomass input units extend into the core reaction zone of the pyrolysis reactor, with built-in cooling function and door switch. While achieving precise control, the technical problem of single feedstock in existing vertical pyrolysis reactor with bottom feeding is solved, and the use of multiple feedstocks can be immediately implemented, greatly improving operational stability.
1 . A modular pyrolysis reactor having multiple simultaneous feeds, comprising:
a lower vessel configured for receiving a first biomass material from a first biomass input unit, wherein a truncated cone-shaped rotatable grate is disposed in the lower vessel, and an outlet end of an input pipe of the first biomass input unit is formed at a center of a top of the rotatable grate, so that a side surface of the rotatable grate forms a core reaction zone of the pyrolysis reactor, and wherein a material distribution tower having a pointed apex and a bowl structure is disposed above the top of the rotatable grate, the pointed apex covering the outlet end of the input pipe of the first biomass input unit and having a base that extends radially outwardly substantially to an outer edge of the top of the rotatable grate;
an upper vessel; and
a middle vessel disposed between the lower vessel and the upper vessel, the middle vessel configured for receiving at least a second biomass material from at least one second biomass input unit, wherein an outlet end of an input pipe of the at least one second biomass input unit extends radially inward to a central region of the pyrolysis reactor that is substantially vertically above the pointed apex and bowl structure of the material distribution tower, and wherein the outlet end of the input pipe of the at least one second biomass input unit is provided with a valve which automatically closes under gravity.
2 . The pyrolysis reactor having multiple simultaneous feeds according to claim 1 , wherein the input pipes of the first biomass input unit and of the at least one second biomass input unit are each internally provided with a screw for conveying a biomass.
3 . The pyrolysis reactor having multiple simultaneous feeds according to claim 1 , wherein the input pipe of the at least one second biomass input unit is provided with a heat insulation layer on a section thereof disposed inside the middle vessel.
4 . The pyrolysis reactor having multiple simultaneous feeds according to claim 3 , wherein the heat insulation layer is an insulating material coating, or the heat insulation layer is a circulating water-cooling layer.
5 . The pyrolysis reactor having multiple simultaneous feeds according to claim 1 , wherein a plurality of water-cooling pipes communicating with each other are connected in the lower vessel, the water-cooling pipes are fixed in the lower vessel, and the water-cooling pipes are arranged above the surface of the rotatable grate to stir and mix a biomass on the grate.
6 . The pyrolysis reactor having multiple simultaneous feeds according to claim 1 , further comprising a modular ash/char discharge seat disposed within the lower vessel, wherein the ash/char discharge seat is detachably arranged at a bottom of the lower vessel, circular strip-shaped ash/char discharge ports are formed at a bottom of the surface of the grate and the inner wall of the lower vessel, and waste ash/char after completion of the reaction enters the ash/char discharge seat through the ash/char discharge ports.