1. School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 102616, China
2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
3. Key Laboratory of Quality Assurance Processing, Storage and Transportation Equipment and Energy saving Technology for Food and Drug in China’s Light Industry, Beijing 100190, China
4. Northwest Institute of Eco-Environment and Resources, CAS, Lanzhou 730000, China
5. Beijing Brigeniues Energy & Environment Tech Co., Ltd., Beijing 100089, China
In order to study the influences of steam and the operation parameters of desorption column on the desorption process,the data provided by a coal power plant in China are simplified,and a desorption column process model is established by using Aspen Plus software.The influences of operation parameters,including regeneration pressure,rich liquid temperature,steam superheat,and rich liquid load,on desorption characteristics such as desorption rate,CO2 production,and regeneration energy consumption are analyzed.It is indicated by weighted optimization results that the system performs optimally when the mass flow rate of steam ranges from 900 kg/h to 1 000 kg/h,the desorption pressure is between 120 kPa and 140 kPa,the carbon load is approximately 0.4-0.5 mol CO2 per mol of monoethanolamine,the superheat of steam is between 30℃ and 50℃,and the mass fractions of monoethanolamine and CO2 in steam are both between 0 and 10%.
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