Apparatus for rapid pyrolytic reaction

Abstract

The present invention provides an apparatus for rapid pyrolysis reaction, which comprises: a reactor, which comprises a reactor body defining a reaction space that forms a dispersion region, a pyrolysis region, and a discharge region from top to bottom; multilayer-regenerative radiant tubes, which are distributed at an interval in the height direction of the reactor body in the pyrolysis region, and each layer of regenerative radiant tubes consists of a plurality of regenerative radiant tubes distributed at an interval in the horizontal direction, a material distributor; a material inlet arranged in the dispersion region above the material distributor; a material distribution gas inlet, which is arranged in the dispersion region and communicates with the material distributor so as to utilize a material distribution gas to blow out the material in the material distributor into the dispersion region, so that the material falls into the pyrolysis region uniformly; a plurality of pyrolysis gas outlets, which are arranged in the dispersion region and / or the pyrolysis region respectively; and a semi-coke outlet arranged in the discharge region.

Description

FIELD OF THE INVENTION[0001]The present invention relates to the chemical engineering field, in particular to an apparatus for fast pyrolysis reaction.BACKGROUND OF THE INVENTION[0002]Fast pyrolysis can cause carbon-containing high polymers to have bonding break reactions rapidly, inhibit secondary pyrolysis reactions and cross-linking reactions of pyrolysis products, reduce fuel gas and semi-coke products in the pyrolysis process, and improve tar yield ratio. Viewed from the aspect of economic and social benefits, fast pyrolysis techniques are processing techniques very suitable for carbon-containing materials.[0003]Fast pyrolysis reactors are usually developed into fluidized bed reactors, moving bed reactors, and rotating bed reactors, etc., and utilize a gas or solid heat carrier to meet the requirements for temperature field and heating rate. However, fast pyrolysis reactors that employ a heat carrier involve a series of procedures, including uniform distribution, mixing and rea...

AI Technical Summary

Benefits of technology

The present invention provides an apparatus for fast pyrolysis reaction using regenerative radiant tubes as heat sources. The apparatus has a reactor with a dispersion region, pyrolysis region, and discharge region. The regenerative radiant tubes are arranged in multiple layers with a uniform temperature gradient, which ensures uniform heat transfer and rapid reaction procedures. The apparatus has a simple process flow and high operating reliability. The material is loaded into the reactor and distributed evenly using a material distributor and a material inlet. The reactor has a high heat transfer effect and a fast pyrolysis reaction. The apparatus also has a plurality of pyrolysis gas outlets and a fuel gas regulating valve to control the temperature. The regenerative radiant tubes have burners at each end, allowing for regenerative combustion and temperature complementation. The apparatus can provide fast pyrolysis of carbon-based organic materials.

Problems solved by technology

Since there is no heat carrier in the pyrolysis reaction apparatus, heat carrier heating, separation and reaction procedures are unnecessary, and the system has a simple process flow and high operating reliability; in addition, the material loaded into the reactor is uniformly distributed, the radiant tubes are arranged in a staggered manner in multiple layers, and a plurality of pyrolysis gas outlets are provided in the layers, so that the material is loaded into the heating region uniformly, heat transfer happens rapidly in the heating region, the pyrolysis gas is collected quickly, and thereby the problems of indirect heating (e.g., poor heat transfer effect and small size of apparatus) are solved, and fast pyrolysis of carbon-based organic materials is realized.

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