Micro double-bed solid fuel decoupling combustion reaction dynamic analyzer

Abstract

The invention provides a micro double-bed solid fuel decoupling combustion reaction dynamic analyzer which comprises a fuel pyrolytic reaction generation device, a residual coke combustion reaction generation device, a double-bed high-temperature coupling device, a gas path device and an analysis test device, wherein solid fuel is firstly pyrolyzed under an inert atmosphere in a micro gas flow bed; then residual cokes enter the micro gas flow bed for combustion test under an air atmosphere; a quick gas detector is used for judging a reaction mechanism by measuring a generation sequence and a generation quantity characteristic of gas components in a fuel pyrolysis process and a coke combustion process, so that reaction dynamic parameters can be calculated. According to the micro double-bed solid fuel decoupling combustion reaction dynamic analyzer, the combustion dynamic parameters of the solid fuel can be tested through direct decoupling combustion through independent and quick switching of the atmospheres and the temperature; the pyrolyzed residual cokes are directly subjected to the combustion test without a cooling process; the temperature rising rates of the gas flow bed and a fluidized bed are high, so that a combustion condition in an actual boiler can be well simulated; the measured reaction dynamic parameters are close to intrinsic reaction dynamic parameters.

Description

technical field [0001] The invention belongs to electric heating experimental equipment, in particular to a miniature twin-bed solid fuel decoupling combustion reaction kinetics analyzer, which is mainly applicable to the characteristics of pyrolysis reaction and coke combustion reaction of various solid fuels under decoupling combustion conditions And the test of related kinetic parameters, at the same time, it can realize the in-situ analysis test of pyrolysis residual coke. Background technique [0002] The study of solid fuel combustion process is generally decoupled into two stages, namely, the pyrolysis of solid fuel and the combustion of coke. The pyrolysis process of solid fuel is actually that some weak bonds of the macromolecules of coal are broken when the temperature is high, so that light gaseous substances and tar are precipitated, and the remaining molecular bonds are repolymerized to form stable coal mainly composed of carbon. macromolecule. The coke left a...

AI Technical Summary

Problems solved by technology

However, the heating rate of the thermobalance is slow, the burning rate of coke is very slow, and the coke is in a static state, which is very different from the rapid combustion process of fuel in the actual boiler.

The Chinese invention patent "Gas-Solid Reaction Kinetic Parameter Analyzer" with the patent number ZL200610171515.3 uses a micro-fluidized bed or a micro-spouted bed to measure the combustion kinetic parameters of coke, which overcomes the slow heating rate of the thermobalance and the sample being in the However, the produced coke still has a cooling and heating process, which will change the reactivity of the produced coke, so the measured kinetic parameters cannot well reflect the activity of the coke in the actual process

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