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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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尿素水解制氨机理的模拟与实验
, PP. 46-51
Keywords: 火电厂,脱硝,制氨,尿素水解机理,热力学,动力学
Abstract:
研究尿素水解制氨机理是完善火电厂烟气脱硝用尿素水解工艺设计的前提。参考acwu(nh3-co2-h2o-(nh2)2co)体系汽液平衡机理构建了开口体系内尿素水解过程的物料平衡、化学平衡、热量平衡及相平衡非线性方程组,建立了反应体系的热力学模型和动力学模型;在自行设计并搭建的尿素水解中试装置上对机理模型的正确性进行了实验验证,分析了反应温度、操作压力和给料尿素质量分数对水解反应的影响,根据检测结果,计算拟合得出了火电厂脱硝尿素水解制氨操作条件下的反应动力学参数。分析结果表明:相平衡说明求解方法计算结果与实验检测结果基本吻合,该方法适用于火电厂尿素水解制氨工艺；随着反应温度的升高,反应液中水、氨及co2的质量分数不断降低；随着给料尿素质量分数的升高,反应液中氨及co2的质量分数增大,水的质量分数则不断减小；随着操作压力的不断升高,反应液中尿素及其衍生物的质量分数不断减小；尿素水解中试试验得到在0.6mpa/150℃操作条件下,尿素水解反应指前因子a等于1.255×1012s－1,活化能e等于107.24kj/mol。
| [1] | 项昆.3种烟气脱硝工艺技术经济比较分析[j].热力发电,2011,40(6):1-3.xiangkun.comparisonandanalysisintechno-economicaspectsforthreekindsoffluegasdenitrificationtechnologies[j].thermalpowergeneration,2011,40(6):1-3.
|
| [2] | sahujn,gangadharanp,patwardhanav.catalytichydrolysisofureawithflyashforgenerationofammoniainabatchreactorforfluegasconditioningandnoxreduction[j].industrial&engineeringchemistryresearch,2009,48(3):727-734.
|
| [3] | sahujn,ramavs,patwardhanav.optimizationofammoniaproductionfromureaincontinuesprocessusingaspenplusandcomputationalfluiddynamicsstudyofthereactorusedforhydrolysisprocess[j].journalofindustrialandengineeringchemistry,2010,16:577-586.
|
| [4] | edwardstj,newmanj,prausnitzjm.vapor-liquidequilibriainmulticomponentaqueoussolutionsofvolatileelectrolyte[j].ajoural,1978,24(6):966-976.
|
| [5] | 魏顺安,杨楠,付雪梅,等.尿素溶液分离体系的汽液平衡[j].化学工程,2011,39(11):83-87.weishunan,yangnan,fuxuemei,etal.vapor-liquidequilibriumofureasolutionseparationsystem[j].chemicalengineering,2011,39(11):83-87.
|
| [6] | 齐俊岭.尿素水解器建模与仿真[j].山东化工,2010,39(8):50-53.qijunling.dynamicmodelingandsimulationofureahydrolysisequipment[j].shandongchemicalindustry,2010,39(8):50-53.
|
| [7] | 姚宣,沈滨,郑鹏.烟气脱硝用尿素水解装置性能分析[j].中国电机工程学报,2013,33(14):38-43.yaoxuan,shenbin,zhengpeng.characteristicsofureahydrolysisequipmentforfluegasdenitration[j].proceedingofthecsee,2013,33(14):38-43.
|
| [8] | 高光华,童景山.化工热力学[m].北京:清华大学出版社,2007.gaoguanghua,tongjingshan.chemicalengineeringthermodynamics[m].beijing:tsinghuauniversitypress,2007(inchinese).
|
| [9] | 韩应,高洪培,王海涛,等.sncr烟气脱硝技术在330mw级cfb锅炉的应用[j].电网与清洁能源,2013(6):85-88.hanying,gaohongpei,wanghaitao,etal.applicationofsncrfluegasdenitrationtechnologyin330mwcfbboilern[j].powersysemandcleanenergy,2013(6):85-88.
|
| [10] | 吴碧君,王述刚,方志星,等.烟气脱硝工艺及其化学反应原理分析[j].热力发电,2006,35(11):59-64.wubijun,wangshugang,fangzhixing,etal.fluegasdenitrificationtechnologiesandanalysisoftheirchemicalreactions[j].thermalpowergeneration,2006,35(11):59-64.
|
| [11] | 郑伟,甄志,黄波,等.烟气脱硝还原剂制备工艺[j].热力发电,2013,42(2):103-105.zhengwei,zhenzhi,huangbo,etal.preparationprocessofreductionforfluegasdenitrification[j].thermalpowergeneration,2013,42(2):103-105.
|
| [12] | mahalikkk,sahujn,patwardhanav,etal.statisticalmodelingandoptimizationofhydrolysisofureatogenerationammoniaforfluegasconditioning[j].journalofhazardousmaterials,2010,182:603-610.
|
| [13] | mahalikkk,sahujn,patwardhanav,etal.equilibriumstudiesonhydrolysisofureainasemi-batchreactorforproductionofammoniatoreducehazardouspollutantsfromfluegases[j].journalofhazardousmaterials,2010,164:659-664.
|
| [14] | islama,irazoqulha,genoudcm.simulationofureasynthesisreactor[j].thermodynamicframework[j].iecr,1993,32(11):2662-2670.
|
| [15] | 张香平,袁一,詹世亮,等.nh3-co2-h2o体系热力学汽液平衡计算应用[j].化学工程,2002,30(2):64-67.zhangxiangping,yuanyi,zhanshiliang,etal.thermodynamicequilibriumcalculationandapplicationofthenh3-co2-h2osystem[j].chemicalengineering,2002,30(2):64-67.
|
| [16] | 张舒雯,邵方元,汪楠.尿素水解系统的模拟与分析[j].计算机与应用化学,2013,30(7):763-766.zhangshuwen,shaofangyuan,wangnan.simulationandanalysisforureahydrolysissystem[j].computersandappliedchemistry,2013,30(7):763-766.
|
| [17] | 陈镇超,杨卫娟,周俊虎,等.尿素催化水解特性实验研究[j].中国电机工程学报,2011,31(35):41-46.chenzhenchao,yangweijuan,zhoujunhu,etal.experimentalinvestigationonthepropertiesofureathermohydrolysiswithcatalysts[j].proceedingofthecsee,2011,31(35):41-46.
|
| [18] | 中国石化集团上海工程有限公司.化工工艺设计手册[m].北京:化学工业出版社,2003.sinopecshanghaiengineeringco.,ltd.manualfordesignofchemicalprocess[m].beijing:chemicaltechnologypress,2003(inchinese).
|
| [19] | 第五学英,王柱勇.焦炉煤气生产合成氨、尿素项目关键问题分析[j].电网与清洁能源，2014(6):119-121.diwuxueying,wangzhuyong.keyproblemsanalisysofcoke-oven-gas-producedsyntheticammoniaandureaproject[j].powersysemandcleanenergy,2014(6):119-121.
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