N-甲基环已胺(MCA)-离子液体水溶液脱碳吸收焓实验研究及再生能耗计算
|
摘要
对新型脱碳试剂-MCA(N-甲基环己胺)与甲基咪唑类离子液体混合水溶液进行了实验考察,测定MCA-[Bmim][BF4](1-丁基-3-甲基咪唑四硼氟酸盐)混合水溶液、MCA-[Bpy[BF4](1-丁基-吡啶的硼氟酸盐)混合水溶液在一定配比下的脱碳性能,与相当配比的MCA、MEA(已醇胺)水溶液脱碳实验对比,得到结果,30%w([Bmim][BF4])-30%w(MCA)水溶液脱碳速率及负载率均优于其他脱碳试剂;借助反应量热仪RC1考察MCA水溶液、MCA与[Bmim][BF4]混合水溶液的脱碳吸收焓、CO_2负载率的影响因素,得到结果,随温度和MCA浓度的升高,两种溶液中单位摩尔MCA的CO_2负载均下降,但随压力升高,负载率增大。MCA,[Bmim]BF4浓度和压力对溶液吸收焓的影响较小,温度对溶液吸收焓影响较大,随着温度升高两种溶液对CO_2的吸收焓升高,MCA-[Bmim]BF4水溶液、MCA水溶液吸收单位摩尔的CO_2,吸收焓集中在80~130 kJ之间。计算得到采用30%w(MCA)-30%w([Bmim][BF4])水溶液为燃煤电厂脱碳试剂时,脱除单位kg CO_2解吸能耗需要3.47 MJ,较同样条件下常规脱碳试剂MEA降低能耗20%。
This paper studied the decarburization performance of new decarburization reagent-MCA( N-methylcyclo-hexylamine) and imidazolium ionic liquids mixed aqueous solution. The decarburization performance of certain ratio of MCA-[Bmim] [BF4]( 1-butyl-3-methylimidazolate tetraphenyl fluoride) aqueous solution and MCA-[Bpy][BF4]( 1-butyl-pyridine borofluoride) aqueous solution was measured and compared with the same ratio of MCA and MEA( ethanolamine) aqueous solution. The results show that 30% w( [Bmim][BF4])-30% w( MCA) aqueous solution has better decarburization performance than other decarburization reagent. Then the author adopted reaction calorimeter RC1 to obtain absorption enthalpy and CO_2 loading rate of MCA aqueous solution,MCA and [Bmim][BF4]mixed aqueous solution. The results show that with the increase of temperature and MCA concentration,the CO_2 loading of per molar MCA decreases,while with the increase of pressure,the load rate also increases. MCA,[Bmim] BF4 concentration and pressure have little effect on the absorption enthalpy of solution. The absorption enthalpy increases with the increase of temperature. The absorption enthalpy of unit molar CO_2 absorbed by MCA-[Bmim][BF4]mixed aqueous solution and MCA aqueous solution is within 80 ~ 130 k J. When 30% w( MCA)-30% w( [Bmim][BF4]) aqueous solution serves as decarburization reagent,it is required 3. 47 MJ to remove per kg CO_2 energy consumption. Compared with conventional decarburization reagent MEA,the energy consumption in this research reduces by 20%.
This paper studied the decarburization performance of new decarburization reagent-MCA( N-methylcyclo-hexylamine) and imidazolium ionic liquids mixed aqueous solution. The decarburization performance of certain ratio of MCA-[Bmim] [BF4]( 1-butyl-3-methylimidazolate tetraphenyl fluoride) aqueous solution and MCA-[Bpy][BF4]( 1-butyl-pyridine borofluoride) aqueous solution was measured and compared with the same ratio of MCA and MEA( ethanolamine) aqueous solution. The results show that 30% w( [Bmim][BF4])-30% w( MCA) aqueous solution has better decarburization performance than other decarburization reagent. Then the author adopted reaction calorimeter RC1 to obtain absorption enthalpy and CO_2 loading rate of MCA aqueous solution,MCA and [Bmim][BF4]mixed aqueous solution. The results show that with the increase of temperature and MCA concentration,the CO_2 loading of per molar MCA decreases,while with the increase of pressure,the load rate also increases. MCA,[Bmim] BF4 concentration and pressure have little effect on the absorption enthalpy of solution. The absorption enthalpy increases with the increase of temperature. The absorption enthalpy of unit molar CO_2 absorbed by MCA-[Bmim][BF4]mixed aqueous solution and MCA aqueous solution is within 80 ~ 130 k J. When 30% w( MCA)-30% w( [Bmim][BF4]) aqueous solution serves as decarburization reagent,it is required 3. 47 MJ to remove per kg CO_2 energy consumption. Compared with conventional decarburization reagent MEA,the energy consumption in this research reduces by 20%.
引文
[1]湛志钢,周旭萍,徐齐胜,等.PZ/AEEA混合吸收剂脱碳性能研究[J].动力工程学报,2016,36(7):535–540.ZHAN Z G,ZHOU X P,XU Q S.Research on CO2Capture Performance of PZ/AEEA Blends[J].Journal of Power Engineering,2016,36(7):535-540.
[2]YEH J T,RESNIK K P,RYGLE K,et al.Semi-batch absorption and regeneration studies for CO2capture by aqueous ammonia[J].Fuel Processing Technology.2005,86(14-15):1533-1546
[3]CHE D Y,LIU D R,ZHANG Z W,et al.Simulation and Analysis of MEA Absorption Method for Capturing CO2in Power Plants[J].Control&Instruments in Chemical Industry,2014,(7):46-49.
[4]KIM I,HOFF K A,MEJDELL T.Heat of Absorption of CO2,with Aqueous Solutions of MEA:New Experimental Data[J].Energy Procedia,2014,63(4):1446-1455.
[5]RAYER A V,HENNI A.Heat of Absorption of CO2in Aqueous Solutions of Tertiary Amines:N-methyl diethanolamine(MDEA),3-Dimethylamino-1-propanol(3DMAP),and 1-Dimethylamino-2-propanol(1DMAP)[J].Industrial&Engineering Chemistry Research,2014,(8):36-40.
[6]KIM Y E,YUN S H,CHOI J H,et al.Comparison of the CO2Absorption Characteristics of Aqueous Solutions of Diamines:Absorption Capacity,Specific Heat Capacity,and Heat of Absorption[J].Energy and Fuels,2015,29(4):2582-2590.
[7]湛志钢,朱德臣,徐齐胜.CO2在液胺-离子液体混合物中的吸收再生特性研究[J].广东电力,2014,(11):41-46.ZHAN Z G,ZHU D C,XU Q S.Research on CO2Absorption and Regeneration Performance in Aqueous Amine Ionic Liquids Blend[J].Guangdong Electric Power,2014,(11):41-46.
[8]吕碧洪.MEA/离子液体混合水溶液吸收CO2的传质–反应机理[D].杭州:浙江大学,2014.LV B H.Mechanism of mass transfer with chemical reaction of CO2absorption into the mixed aqueous solution of MEA and liquid liquid[D].Hangzhou:Zhejiang University,2014.
[9]BATES E D,MAYTON R D,NTAI I,et al.CO2Capture by a Task-specific Ionic Liquid.[J].Journal of the American Chemical Society,2002,124(6):926-927.
[10]DERGAL F,MOKBEL I,NEGADI L,et al.Capture of CO2using secondary,tertiary mono and multiamine Absorption isotherms of CO2[C].International Conference on Chemical Thermodynamics,2014.
[11]BATES E D,MAYTON R D,NTAI I,et al.CO2capture by a task-specific ionic liquid.[J].Journal of the American Chemical Society,2002,124(6):926-7.
[12]KIM S,JIN Y L.CO2,absorption mechanism in amine solvents and enhancement of CO2,capture capability in blended amine solvent[J].International Journal of Greenhouse Gas Control,2016,45:181-188.
[13]黄莺.离子液体体系热力学模型及碳捕集过程模拟研究[D].北京:中国科学院,2015.HUANG Y.Study on thermodynamic model and carbon capture process of ionic liquid system[D].Beijing:Chinese Academy of Sciences,2015.
[14]YANG J,YU X,YAN J,et al.CO2Capture Using Amine Solution Mixed with Ionic Liquid[J].Industrial&Engineering Chemistry Research,2014,53(7):2790–2799.
[15]刘纯,潘旭海,陈发明,等.反应量热仪RC1在化工热危险性分析中的应用[J].工业安全与环保,2011,37(5):26-27.LIU C,PAN X H,CHEN F M,etal.Application of Reaction Calorimetry in the Thermal Hazard Analysis of Chemical Process[J].Industrial Safety and Environmental Protection,,2011,37(5):26-27.
[16]晏水平,方梦祥,张卫风,等.燃煤烟气中CO2膜吸收分离工艺设计与经济性分析[C]//第三届全国化学工程与生物化工年会,北京,2006.YAN S P,FANG M X,ZHANG W F,etal.Engineering Design and Economic Analysis of CO2Sequestration from Flue Gas by Using Membrane Absorption Techniques[C]//National Conference on Chemical Engineering and Biochemistry,Beijing,2006.
[17]王海波,廖昌建,刘忠生,等.MEA溶液捕集CO2工艺优化及能耗分析[J].炼油技术与工程,2012,42(6):11-14.WANG H B,LIAO C J,LIU Z S,et al.Optimization of CO2process and energy consumption analysis of MEA solution capture[J].Refining Technology and Engineering,2012,42(6):11-14.
[18]汪明喜.基于燃煤烟气CO2捕集的相变吸收剂试验研究[D].杭州:浙江大学,2013.WANG MX.Study on phase change absorber based on CO2capture of coal-fired flue gas[D].Hangzhou:Zhejiang University,2013.
[19]SONG H J,LEE S,PARK K,et al.Simplified Estimation of Regeneration Energy of 30 wt%Sodium Glycinate Solution for Carbon Dioxide Absorption[J].Industrial&Engineering Chemistry Research,2008,47(24):2222-2230.
[2]YEH J T,RESNIK K P,RYGLE K,et al.Semi-batch absorption and regeneration studies for CO2capture by aqueous ammonia[J].Fuel Processing Technology.2005,86(14-15):1533-1546
[3]CHE D Y,LIU D R,ZHANG Z W,et al.Simulation and Analysis of MEA Absorption Method for Capturing CO2in Power Plants[J].Control&Instruments in Chemical Industry,2014,(7):46-49.
[4]KIM I,HOFF K A,MEJDELL T.Heat of Absorption of CO2,with Aqueous Solutions of MEA:New Experimental Data[J].Energy Procedia,2014,63(4):1446-1455.
[5]RAYER A V,HENNI A.Heat of Absorption of CO2in Aqueous Solutions of Tertiary Amines:N-methyl diethanolamine(MDEA),3-Dimethylamino-1-propanol(3DMAP),and 1-Dimethylamino-2-propanol(1DMAP)[J].Industrial&Engineering Chemistry Research,2014,(8):36-40.
[6]KIM Y E,YUN S H,CHOI J H,et al.Comparison of the CO2Absorption Characteristics of Aqueous Solutions of Diamines:Absorption Capacity,Specific Heat Capacity,and Heat of Absorption[J].Energy and Fuels,2015,29(4):2582-2590.
[7]湛志钢,朱德臣,徐齐胜.CO2在液胺-离子液体混合物中的吸收再生特性研究[J].广东电力,2014,(11):41-46.ZHAN Z G,ZHU D C,XU Q S.Research on CO2Absorption and Regeneration Performance in Aqueous Amine Ionic Liquids Blend[J].Guangdong Electric Power,2014,(11):41-46.
[8]吕碧洪.MEA/离子液体混合水溶液吸收CO2的传质–反应机理[D].杭州:浙江大学,2014.LV B H.Mechanism of mass transfer with chemical reaction of CO2absorption into the mixed aqueous solution of MEA and liquid liquid[D].Hangzhou:Zhejiang University,2014.
[9]BATES E D,MAYTON R D,NTAI I,et al.CO2Capture by a Task-specific Ionic Liquid.[J].Journal of the American Chemical Society,2002,124(6):926-927.
[10]DERGAL F,MOKBEL I,NEGADI L,et al.Capture of CO2using secondary,tertiary mono and multiamine Absorption isotherms of CO2[C].International Conference on Chemical Thermodynamics,2014.
[11]BATES E D,MAYTON R D,NTAI I,et al.CO2capture by a task-specific ionic liquid.[J].Journal of the American Chemical Society,2002,124(6):926-7.
[12]KIM S,JIN Y L.CO2,absorption mechanism in amine solvents and enhancement of CO2,capture capability in blended amine solvent[J].International Journal of Greenhouse Gas Control,2016,45:181-188.
[13]黄莺.离子液体体系热力学模型及碳捕集过程模拟研究[D].北京:中国科学院,2015.HUANG Y.Study on thermodynamic model and carbon capture process of ionic liquid system[D].Beijing:Chinese Academy of Sciences,2015.
[14]YANG J,YU X,YAN J,et al.CO2Capture Using Amine Solution Mixed with Ionic Liquid[J].Industrial&Engineering Chemistry Research,2014,53(7):2790–2799.
[15]刘纯,潘旭海,陈发明,等.反应量热仪RC1在化工热危险性分析中的应用[J].工业安全与环保,2011,37(5):26-27.LIU C,PAN X H,CHEN F M,etal.Application of Reaction Calorimetry in the Thermal Hazard Analysis of Chemical Process[J].Industrial Safety and Environmental Protection,,2011,37(5):26-27.
[16]晏水平,方梦祥,张卫风,等.燃煤烟气中CO2膜吸收分离工艺设计与经济性分析[C]//第三届全国化学工程与生物化工年会,北京,2006.YAN S P,FANG M X,ZHANG W F,etal.Engineering Design and Economic Analysis of CO2Sequestration from Flue Gas by Using Membrane Absorption Techniques[C]//National Conference on Chemical Engineering and Biochemistry,Beijing,2006.
[17]王海波,廖昌建,刘忠生,等.MEA溶液捕集CO2工艺优化及能耗分析[J].炼油技术与工程,2012,42(6):11-14.WANG H B,LIAO C J,LIU Z S,et al.Optimization of CO2process and energy consumption analysis of MEA solution capture[J].Refining Technology and Engineering,2012,42(6):11-14.
[18]汪明喜.基于燃煤烟气CO2捕集的相变吸收剂试验研究[D].杭州:浙江大学,2013.WANG MX.Study on phase change absorber based on CO2capture of coal-fired flue gas[D].Hangzhou:Zhejiang University,2013.
[19]SONG H J,LEE S,PARK K,et al.Simplified Estimation of Regeneration Energy of 30 wt%Sodium Glycinate Solution for Carbon Dioxide Absorption[J].Industrial&Engineering Chemistry Research,2008,47(24):2222-2230.