Modeling of an Opposed Multiburner Gasifier with a Reduced-Order Model

Abstract

A reduced-order model (ROM) is considered a promising solution for engineering simulation of a gasifier. In this study, a ROM of a commercial-scale opposed multiburner gasifier is developed based on a reactor network model (RNM). The RNM blocking for this gasifier is established and validated based on analysis of the gasifier flow field. The particle flow in the gasifier is characterized by the particle residence time in each reactor of the RNM. The random pore model and the "effective factor" method are employed to model the char gasification rate under high pressure and temperature. The interphase heat transfer and heat loss through the refractory wall are calculated. In model validation, the simulation results show well agreement with the industrial data. The model provides distributions of the gas temperature and compositions in the gasifier. Effects of the particle size on the particle temperature and carbon conversion are discussed quantitatively. It is observed that fine particles can be completely converted in the jet zone, while the large ones (>100 μm) are converted mainly in the impinging zone and impinging flow zone.

Sensitivity and safety boundary Analysis of Opposed Multi‐Burner Coal Water Slurry Gasification System

“…Table lists the description of the gasification system model. The volume and chemical reaction of each module are defined by referring to Li and Yang's research …”

“…The volume and chemical reaction of each module are defined by referring to Li and Yang's research. 27,28 The gasification system model is established on the software of UniSim Design. The physical property method uses Peng-Robinson model; the gasification agent is pure oxygen, and the coal type is Shenhua coal.…”

Experimental study on CH* chemiluminescence characteristics of impinging flames in an opposed multi‐burner gasifier

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A survey on current advanced IGCC power plant technologies, sensors and control systems

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