O2/CO2气氛下水蒸气对石灰石同时煅烧/硫化的影响

doi:10.3969/j.issn.1000-7229.2016.01.015

电力建设 ›› 2016, Vol. 37 ›› Issue (1): 97-102.doi: 10.3969/j.issn.1000-7229.2016.01.015

O₂/CO₂气氛下水蒸气对石灰石同时煅烧/硫化的影响

郭泰成1，邓菲2，邹潺1，王春波1

1.华北电力大学能源动力与机械工程学院，河北省保定市 071003；2.河北西柏坡发电有限责任公司，石家庄市 050000

出版日期:2016-01-01
作者简介:郭泰成（1992），男，硕士，主要从事洁净煤燃烧与污染物控制工作；邓菲（1990），女，硕士，主要从事火电厂运行及检修工作；邹潺（1992），男，硕士，主要从事洁净煤燃烧与污染物控制研究工作；王春波（1973），男，教授，博士生导师，主要从事洁净煤技术与污染物控制方面的研究工作。
基金资助:
国家自然科学基金项目（51276064）

Effects of Steam on Simultaneous Calcination and Sulfation of Limestone under O₂/CO₂ Conditions

GUO Taicheng1, DENG Fei2, ZOU Chan1, WANG Chunbo1

1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Baoding 071003, Hebei Province, China；2. Hebei Xibaipo Power Generation Co., Ltd., Shijiazhuang 050000, China

Online:2016-01-01
Supported by:
Project supported by National Natural Science Foundation of China (51276064)

摘要/Abstract

摘要：

为进一步探讨富氧气氛下水分对硫化特性的影响，利用等温热重实验装置，进行了富氧燃烧石灰石同时煅烧/硫化实验，研究了水蒸气浓度、温度、石灰石粒径以及种类等对石灰石同时煅烧/硫化特性的影响。水蒸气提高了石灰石煅烧速率，石灰石完全分解时间缩短；在硫化反应动力学控制阶段水蒸气的影响不明显，而到扩散控制阶段促进作用变得显著。富氧气氛下水蒸气的影响随温度（实验范围）升高而突出，温度越高最终的钙转化率越高。粒径效应显著，随石灰石粒径的减小最终钙转化率明显提高。水蒸气对不同种类石灰石的同时煅烧/硫化特性影响趋势基本一致。

关键词: O₂/CO₂气氛, 石灰石, 煅烧/硫化, 水蒸气

Abstract:

To further discuss the effect of steam on the sulfation characteristics under oxygen-enriched atmosphere, this paper implements the simultaneous calcination and sulfation experiment for limestone in oxygen-enriched combustion with using isothermal thermogravimetric experiment device, and studies the influences of steam concentration, temperature, particle size and limestone type on the simultaneous calcination/sulfation characteristics of limestone. The calcination rate is increased by the presence of H₂O, which results in a shorter time needed for the complete decomposing of limestone. There is an obvious promotion by H₂O in the diffusion controlled stage；however the influence is hardly detected in the dynamic controlled stage. The influence of steam is highlighted with the increase of temperature (within experimental range) under oxygen-enriched atmosphere, and the finally calcium conversion rate increases with the temperature increasing. The effect of particle size is significant, and the ultimate calcium conversion rate increases significantly with the decrease of limestone particle size. The influences of steam on the simultaneous calcination/sulfation characteristics of different types of limestone are basically the same.

Key words: O₂/CO₂ atmosphere, limestone, calcination/sulfation, steam

中图分类号:

TM 621.2

郭泰成，邓菲，邹潺，王春波. O₂/CO₂气氛下水蒸气对石灰石同时煅烧/硫化的影响[J]. 电力建设, 2016, 37(1): 97-102.

GUO Taicheng, DENG Fei, ZOU Chan, WANG Chunbo. Effects of Steam on Simultaneous Calcination and Sulfation of Limestone under O₂/CO₂ Conditions[J]. Electric Power Construction, 2016, 37(1): 97-102.

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O₂/CO₂气氛下水蒸气对石灰石同时煅烧/硫化的影响

Effects of Steam on Simultaneous Calcination and Sulfation of Limestone under O₂/CO₂ Conditions

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