Internally and externally heated pyrolysis reactor

Abstract

The invention provides an internal and external heating pyrolysis reactor, which has the advantages of low energy consumption, high thermal efficiency, large biomass treatment capacity, and less impurities. It includes: an outer shell; an outer partition; The degassing passage; the inner partition, which is arranged between the outer partition cylinder and the central air pipe; the high-temperature fluid inlet, which is arranged on the outer shell and communicates with the bottom of the outer sub-cavity at the lowest layer; the air passage part includes multiple sets of air passage units , used to guide the high-temperature fluid entering the bottom of the outer sub-cavity into the inner sub-cavity, and then enter the outer sub-cavity of the upper layer and the inner sub-cavity of the upper layer, flowing in an S-shaped zigzag, and entering the outer sub-cavities of each layer in turn Cavities and inner sub-cavities; each group of air passage units is used to connect one layer of outer sub-cavities and inner sub-cavities; heat storage part, including the The porous heat storage material; and the pyrolysis gas outlet are arranged on the outer shell and communicate with the central gas pipe.

Description

technical field [0001] The invention belongs to the technical field of renewable energy utilization, in particular to an internal and external heating pyrolysis reactor. Background technique [0002] Biomass pyrolysis technology is one of the cutting-edge technologies of biomass energy research in the world. This technology can convert wood chips and other biomass into high-quality, easy-to-storage, easy-to-transport, high-energy-density and convenient-to-use alternative liquid fuels (bio-oil) in a continuous process and factory production mode, which can not only be used directly It can be used for the combustion of existing boilers and gas turbines, and the quality of liquid fuel can be close to that of conventional power fuels such as diesel or gasoline through further improvement, and chemical products with commercial value can also be extracted from it. Compared with conventional fossil fuels, bio-oil can be regarded as a green fuel in the 21st century because of its e...

AI Technical Summary

Problems solved by technology

The direct heating reactor uses the heat carrier to mix directly with the biomass, which has good heat transfer performance and large processing capacity, but there are also problems that are difficult to solve: 1. The use of a large amount of heat carrier gas results in high energy consumption and more impurities in the product. Poor material adaptability; 2. The wear resistance of solid heat carrier is poor, and the service life is not long

Indirect heating reactors, such as microwave pyrolysis reactors, electromagnetic pyrolysis reactors, etc., use microwaves or electromagnetics to heat biomass. Although there are fewer impurities, the equipment is expensive, energy consumption is high, the pyrolysis yield is low, and it cannot be scaled up. low throughput, not suitable for industrial use

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