H-1混合原料氣盤管受力狀態(tài)及系統(tǒng)改造優(yōu)化方案研究.pdf

1、西安石油大學(xué)碩士學(xué)位論文H1混合原料氣盤管受力狀態(tài)及系統(tǒng)改造優(yōu)化方案研究姓名：蔡振宇申請學(xué)位級別：碩士專業(yè)：機械工程指導(dǎo)教師：李臻賀力奇20081008英文摘要Subject：ThemixedfeedgaspreheatcoilofH一1completelymodifyandsolutionSpeciality：MechanicalEngineering矗。Name：caizhenyu(si印atll他)疊丕鶩劬zJle，g“Instr

2、uctor：LiZhen(signature)金蘭叢絲∑HeLiqi(signatlln門現(xiàn)拿JeWABSTRACTCNPCURUMQIpetrochemicalfertilizerplant’SsecondsynthesisrebomerH1isoneofthekeyandcoreequipmentofthesecondchemicalfertilizerprocessunitsThemixedfeedgaspreheatcoil(i

3、nthefollowcallitpreheatcoilforshort)isalsothenecessarycomponentelement，undertakingthetechnologicalactioninmixingrawgasandrecyclingtheheatofstackgasinrebomerwhat’Smore，themainmediuminpreheatcoilisflammableandexplosivenatu

4、ralgas，SOthesafetyinoperationconcernsnotonlythelong—periodmanufacturebutalsothesafetyproductioninenterpriseFromOctober16in1997，thecracks(thecracks’lengthalongweldheataffectedzone’Sweekisabout60mm)werefirstfoundinthel撐、2撐

5、coilofThemixedraWgaspreheatcoils，thenpenetratingcrackswerefoundinothercoilsagainNowthethreesupportsingascollectorhadallleftthelandandofnouse；Thetwelvepreheatcoils(exceptthel撐、4#and9#coilforthecauseofpipeblockage)andthega

6、scollectorN9’SsockethadfoundpenetratingcracksintheweldinterfaceofdissimilarsteelsButonlymadesomelocalleakingstoppageonsite，thisseriouslyaffectedthesafeoperationofdeviceThestressstateintheweldsofthepreheatcoilsandgascolle

7、ctorsassociated、析mthemainmixrawgaspiped，preheatcoils，gascollectorsandSOonalsoaffectedtheairflowfieldoftheflowsectionandthetemperaturedistributionThestress’relationshipisverycomplicated，fornotundertheconditionofanysystems

8、tressanalysis，thethreetechnicaltransformationsinl997，1998and1999whichwerefocusedonthepenetratingcracksintheweldinterfaceofdissimilarsteelsdidnocompletelysolutionThisresearchsubjectWasbasedonfieldsurveycollectionsoftechni

9、calparametersandotherchemicalfertilizercorporations’investigationdeterminedbytheheattransferanalysisofsomecomponents，usedANSYS100thewellknownsoftwareoffiniteelementanalysis，calculatedseveralmodelsofpreheatcoilsandotherme

10、ntionedpipingThissubjectalsoanalyzedandcomparedthemodificationsofsettingexpansivesegmentintheoutletchangingpipelineandSOonindetailInaddition，thisCancomprehensivelyanalysisthecauseofcracksintheweldinterfaceofdissimilarste