TBCFB system simulation and optimization for pyrolysis-gasification-combustion of low rank coal

WANG Yaxiong; YANG Jingxuan; ZHANG Zhonglin; MA Xuli; LI Peng; HAO Xiaogang; GUAN Guoqing

doi:10.11949/j.issn.0438-1157.20180280

您当前的位置：

首页 >

文章列表页 >

TBCFB system simulation and optimization for pyrolysis-gasification-combustion of low rank coal

更新时间：2025-12-10

- TBCFB system simulation and optimization for pyrolysis-gasification-combustion of low rank coal
- CIESC Journal Issue 8, Pages: 3596-3604(2018)
- 作者机构：
  
  1. 太原理工大学化学化工学院,山西,太原,030024
  2. 太原科技大学化学与生物工程学院,山西,太原,030021
  3. 日本国立弘前大学北日本新能源研究所,青森,日本,030-0813
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180280
  CLC： Q015.1
- Online First：05 August 2018，
  
  Published：05 August 2018
- 稿件说明：
移动端阅览
WANG Yaxiong, YANG Jingxuan, ZHANG Zhonglin, et al. TBCFB system simulation and optimization for pyrolysis-gasification-combustion of low rank coal[J]. CIESC Journal, 2018, (8): 3596-3604.
DOI：

WANG Yaxiong, YANG Jingxuan, ZHANG Zhonglin, et al. TBCFB system simulation and optimization for pyrolysis-gasification-combustion of low rank coal[J]. CIESC Journal, 2018, (8): 3596-3604. DOI： 10.11949/j.issn.0438-1157.20180280.

摘要

三塔式循环流化床（TBCFB）是基于低阶煤分质转化利用理念开发的新型工艺系统，包含热解、气化及燃烧三个主反应器。提出了采用半焦颗粒代替石英砂作为循环热载体的新工艺，并使用Aspen Plus建立了基于半焦颗粒的TBCFB系统模拟流程，寻求系统内物料转化和能量利用的适宜操作条件。结果表明，只需燃烧40%的热解半焦，即可满足低阶煤在600℃热解和60%的热解半焦在800.9℃进行水蒸气气化所需热量；与石英砂或高温灰相比，利用热容较高的半焦颗粒作为循环介质可以显著降低热载体循环量，与原煤质量比仅为5.5。综合气化产物组成、低热值和冷煤气效率等指标，适宜的水蒸气与反应半焦质量比为1.5。上述模拟结果对半焦循环TBCFB新技术的工业应用具有一定指导意义。

Abstract

The quality-based utilization technology of low rank coal has attracted much attention due to its advantages in energy saving and emission reduction. A novel triple-bed combined circulating fluidized bed (TBCFB) system

which includes a pyrolyzer

a gasifier and a combustor

is developed to minimize energy loss. A new process was proposed to used char coal particles instead of sand particles as heat-carried circulating medium and an Aspen Plus process simulation was established to obtain optimum operating conditions for material conversion and energy utilization between three bed reactors. The results showed that 40% char coal combustion could provide enough energy for both low rank coal pyrolysis at 600℃ and gasification of water over 60% residual char coal at 800.9℃. High heat capacity char coal particles significantly reduced amount of heat-carried particles needed to circulate in the system. To meet the requirements of heat transportation

mass ratio of char coal to low rank coal was 5.5

whereas mass ratio of quartz and ash to low rank coal were 11 and 12

respectively. Comprehensive analysis of syngas composition

cold gasification efficiency (CGE) and lower heating value (LHV) indicated optimal ratio of steam to char coal (St/C) was 1.5 in gasification. The simulation results would provide some guidance on industrial application of TBCFB system with char coal as heat-carried particles.

关键词

Keywords

references

Views

263

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study on physical property model and enrichment process of trioxane system

Research on rapid reactor for propylene high-temperature chlorination based on NSGA-Ⅲ multi-objective optimization

Establishment of machine learning-driven biomass pyrolysis model and optimization of volatiles chemical looping reforming hydrogen production process

Fluidized bed two-stage gasification of coal with steam/O2 for production of low-tar syngas

Intrusion detection of industrial control system based on grey wolf optimization integrated random black hole

Related Author

JIANG Zhihong

LEI Qian

ZHU Yinjun

LEI Zhigang

CHEN Honglin

LI Ming

HAN LuChang

LUO Hean

Related Institution

Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences

School of Chemical Sciences, University of Chinese Academy of Sciences

Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University

School of Resource and Environment, Hunan University of Technology and Business

Hunan Provincial Key Laboratory of Carbon Neutrality and Intelligent Energy

⁰