真空变压吸附净化升级沼气过程优化

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1、-------optimizationframeworkisconstructedtooptimizePSAprocess.Anoptimizationforbiogasupgradingprocessbythree-bedandtwelve-stepVPSAwasperformedbytheaboveoptimizationframeworkinthiswork.Theoptimizationgoalistomaximizetherecoveryrateofmethane(R)andtheunitproductivityofadsorbent(uP),whiletominimizethe

2、unitenergyconsumption(uW)undertheconditionofthatCH4purityisnotlessthan98%.Therawgascomposedof60%CH4and40%CO2wasusedat313.15Kwiththepressureof101.325kPa.Initially,thepurityofmethaneintheproductis98.76%,theR70.93%,theuP0.1043Nm3CH4/kg/h,andtheuW0.4423kWh/(kgCH4).Afterthe38thoptimizationiteration,the

3、optimalgoalisobtained,andthesolvingaccuracyandconstraintconditionsaremetaswell.Atthatpoint,theproductpurityofmethaneis98.00%,theR93.23%,theuP0.1331Nm3CH4/kg/h,andtheuW0.3697kWh/(kgCH4).Theoptimalresultsshowthatitisextremelynecessarytoadoptthisoptimizationframeworktooptimizethebiogasupgradingproces

4、s.TheRisincreasedby22.3%,theuPisincreasedby27.61%andtheuWisreducedby16.41%.Andtherefore,theoptimizationofthisprocesshasremarkableeconomicbenefit.KEYWORDS：Biogasupgrading,Higherutilizationefficiency,VPSA,Modellibrary,Optimizationframework-----------万方数据-----------目录第一章绪论与综述.........................

5、..................................................11.1引言.................................................................................................11.2脱除沼气中CO2............................................................................21.2.1高压水洗...............................................

6、................................21.2.2物理吸收...............................................................................21.2.3化学吸收...............................................................................31.2.4膜分离...............................................................................

7、....31.2.5低温精馏...............................................................................41.2.6变温吸附...............................................................................41.2.7变压吸附....................