Dynamic modeling of Shell entrained flow gasifier in an integrated gasification combined cycle process

Hyeon Hui Lee, Jae Chul Lee, Yong Jin Joo, Min Oh, Chang Ha Lee

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

The Shell coal gasification system is a single-stage, up-flow, oxygen-blown gasifier which utilizes dry pulverized coal with an entrained flow mechanism. Moreover, it has a membrane wall structure and operates in the slagging mode. This work provides a detailed dynamic model of the 300MW Shell gasifier developed for use as part of an overall IGCC (integrated gasification combined cycle) process simulation. The model consists of several sub-models, such as a volatilization zone, reaction zone, quench zone, slag zone, and membrane wall zone, including heat transfers between the wall layers and steam generation. The dynamic results were illustrated and the validation of the gasifier model was confirmed by comparing the results in the steady state with the reference data. The product gases (H2 and CO) began to come out from the exit of the reaction zone within 0.5s, and nucleate boiling heat transfer was dominant in the water zone of the membrane wall due to high heat fluxes. The steady state of the process was reached at nearly t=500s, and our simulation data for the steady state, such as the temperature and composition of the syngas, the cold gas efficiency (81.82%), and carbon conversion (near 1.0) were in good agreement with the reference data.

Original languageEnglish
Pages (from-to)425-440
Number of pages16
JournalApplied Energy
Volume131
DOIs
Publication statusPublished - 2014 Oct 15

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Fingerprint Dive into the research topics of 'Dynamic modeling of Shell entrained flow gasifier in an integrated gasification combined cycle process'. Together they form a unique fingerprint.

  • Cite this