中国电机工程学报Issue(9)：2254-2260,7.DOI:10.13334/j.0258-8013.pcsee.2015.09.020
碳酸钾溶液捕集CO2的吸收热研究
Heat of CO2 Absorption in Aqueous Potassium Carbonate Solutions
徐志明 1王颖聪 1郜时旺 2郭东方 3王金意3
作者信息
- 1. 东北电力大学能源与动力工程学院，吉林省吉林市 132012
- 2. 中国科学院工程热物理研究所，北京市 海淀区100190
- 3. 中国华能集团清洁能源技术研究院有限公司，北京市 昌平区102209
- 折叠
摘要
Abstract
ABSTRACT:In the process of carbon dioxide capture by chemical absorption, absorption enthalpy and energy consumption for regeneration are important index to evaluate absorbent performance evaluation and design operation conditions. Carbonate slurry process is considered to be one of the potential technologies for large-scale CO2 capture from coal-based power stations, as it can reduce the participation of water in stripper. In this paper, true heat flow method was adopted to measure absorption enthalpy during the absorption of CO2 in aqueous potassium carbonate solutions. The effect of temperature, concentration, CO2 loading and crystallization on absorption heat were also discussed, which provides basic data for the design and simulation of carbonate slurry process. Without crystallization, absorption heat decreases with CO2 loading increasing, effects of reaction temperature and K2CO3 concentration are not significant. In the present of crystallization, temperature and concentration effects become important and absorption heat changes much because of crystallization enthalpy. Besides, Latent heat of water vaporization, crystallization enthalpy and cooling water demand should be considered for the energy consumption evaluation of carbonate slurry process.关键词
二氧化碳捕集/碳酸钾/焓/结晶/吸收热Key words
CO2 absorption/potassium carbonate/enthalpy/crystallization/heat of absorption分类
化学化工引用本文复制引用
徐志明,王颖聪,郜时旺,郭东方,王金意..碳酸钾溶液捕集CO2的吸收热研究[J].中国电机工程学报,2015,(9):2254-2260,7.
