Chemical chain gasification reaction device and method thereof

Abstract

The invention discloses a chemical chain gasification reaction device and method. The device is a solid particle circulation loop composed of an air reactor, a lifting pipe, a cyclone separator, a return feeder and a fuel reactor. The fuel reactor comprises a gasification reactor at the lower part and a reforming reactor at the upper part which are connected through a contracted rectangular nozzle; fuel is gasified in the gasification reactor, and eluted coke and tar enter the reforming reactor through the rectangular nozzle and are catalytically converted into synthesis gas; and the reduced oxygen carrier enters the air reactor through the return feeder for oxidation and regeneration, enters the cyclone separator through the lifting pipe for separation, enters the reforming reactor through the return feeder, and falls into the gasification reactor through the rectangular slit, so that the cyclic utilization of oxygen carrier particles in the circulating fluidized bed is completed. The device reduces the pressure drop of the reactor and effectively saves the energy consumption of a fan through staged fluidization of the fuel reactor and fluidization reconstruction.

Description

technical field [0001] The invention relates to a chemical chain gasification reaction device and a method thereof. Background technique [0002] Chemical-Looping Gasification (GLG) technology is a novel gasification method, which has a similar principle to Chemical-Looping Combustion (CLC), both of which use metal or non-metal oxides to provide fuel Oxygen required for the reaction, by controlling the lattice oxygen / fuel ratio to obtain the target product. Such as figure 1 As shown, from the perspective of oxygen utilization, chemical looping gasification no longer uses pure oxygen directly, but relies on the lattice oxygen contained in the circulating metal oxide (oxygen carrier) particles, which will chemically react with oxygen in the air to The oxygen in the air reactor is transported to the fuel reactor to realize the process of carrying oxygen and transferring oxygen; at the same time, the circulating solid particles in the reactor are oxygen carriers with significa...

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Problems solved by technology

Traditional single-stage fuel reactors, or traditional single methods, such as increasing the fluidization wind speed and using bed feeds, etc., are difficult to eradicate the problem of tar escape

[0004] The hierarchical arrangement of fuel reactors can prolong the residence time of oxygen carrier particles in the fuel reactor and improve the conversion rate of tar. It is a commonly used method for two-stage or multi-stage gasification reactors. In the prior art, hood-type air distribution panels are used for Multi-stage arrangement, this arrangement method increases the pressure drop of the fan used in the fuel reactor and increases the energy consumption of the fan

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