化工进展
化工進展
화공진전
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2012年
7期
1442-1448,1457
,共8页
詹昊%徐纯刚%李小森%颜克凤
詹昊%徐純剛%李小森%顏剋鳳
첨호%서순강%리소삼%안극봉
CO2分离%水合物法%四正丁基溴化铵%环戊烷%烟气%分离效率
CO2分離%水閤物法%四正丁基溴化銨%環戊烷%煙氣%分離效率
CO2분리%수합물법%사정정기추화안%배무완%연기%분리효솔
CO2 separation%hydrate%tetra-n-butyl ammonium bromide(TBAB)%cyclopentane(CP)%flue gas%separation efficiency
在四正丁基溴化铵(TBAB)和环戊烷(CP)双添加剂体系下进行了一级水合物法分离烟气中CO2的研究。对比了纯体系和双添加剂体系对水合物生成过程及分离效果的影响。获得了合适的操作条件(温度276.15 K,压力2.0~3.3 MPa)、初始液气比(0.78)、添加剂浓度(CP体积分数为0.6%)。在合适条件下,双添加剂体系相比纯TBAB体系水合过程的载气量达至1.5~2.0倍,剩余气相中CO2摩尔分数由17%降至7%,去除率由40%~50%上升到60%~70%。实验表明,双添加剂体系在水合物法CO2分离技术的分离效果及节能方面存在潜力,为工业化水合物法净化烟气提供了参考和标准。
在四正丁基溴化銨(TBAB)和環戊烷(CP)雙添加劑體繫下進行瞭一級水閤物法分離煙氣中CO2的研究。對比瞭純體繫和雙添加劑體繫對水閤物生成過程及分離效果的影響。穫得瞭閤適的操作條件(溫度276.15 K,壓力2.0~3.3 MPa)、初始液氣比(0.78)、添加劑濃度(CP體積分數為0.6%)。在閤適條件下,雙添加劑體繫相比純TBAB體繫水閤過程的載氣量達至1.5~2.0倍,剩餘氣相中CO2摩爾分數由17%降至7%,去除率由40%~50%上升到60%~70%。實驗錶明,雙添加劑體繫在水閤物法CO2分離技術的分離效果及節能方麵存在潛力,為工業化水閤物法淨化煙氣提供瞭參攷和標準。
재사정정기추화안(TBAB)화배무완(CP)쌍첨가제체계하진행료일급수합물법분리연기중CO2적연구。대비료순체계화쌍첨가제체계대수합물생성과정급분리효과적영향。획득료합괄적조작조건(온도276.15 K,압력2.0~3.3 MPa)、초시액기비(0.78)、첨가제농도(CP체적분수위0.6%)。재합괄조건하,쌍첨가제체계상비순TBAB체계수합과정적재기량체지1.5~2.0배,잉여기상중CO2마이분수유17%강지7%,거제솔유40%~50%상승도60%~70%。실험표명,쌍첨가제체계재수합물법CO2분리기술적분리효과급절능방면존재잠력,위공업화수합물법정화연기제공료삼고화표준。
Experiments for CO2 separation from flue gas(CO2/N2) are conducted with the one-stage hydrate method using TBAB(tetra-n-butyl ammonium bromide,C16H36NBr) and CP(cyclopentane,C5H10) as joint additives.The effects of TBAB and TBAB/CP on hydrate formation and separation efficiency were investigated and compared.The suitable conditions of 276.15 K and 2.0-3.3 MPa along with initial liquid gas volume ratio of 0.78 and the CP volume concentration of 0.6 % were obtained.Under such conditions,the gas uptake with TBAB/CP joint additives was 1.5-2.0 times higher than that in TBAB solution.Meanwhile,the CO2 concentration in residual gas phase could be decreased from 17% to 7%.The split fraction of 60%-70% was also higher than that of 40%-50% in pure TBAB solution.The result demonstrated that TBAB/CP system was evidently helpful for hydrate-based CO2 capture from the flue gast.