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Engineering5(2019)995–1002
Contents lists available at ScienceDirect
Engineering
Research
SmartProcessManufacturing:DeepIntegrationofAIandProcessManufacturing—Perspective
OpportunitiesandChallengesofArtificialIntelligenceforGreen
ManufacturingintheProcessIndustry
ShuaiMao,BingWang
⇑
,YangTang
⇑
,FengQian
KeyLaboratoryofAdvancedControlandOptimizationforChemicalProcesses,MinistryofEducation,EastChinaUniversityofScienceandTechnology,Shanghai200237,China
articleinfo
abstract
Smartmtmanufacturing,
thereisatrendtoincorporatedifferentkindsofnew-generationinformationtechnologiesintoprocess-
ent,greenmanufacturingisfacingmajorobstaclesrelatedtosafetymanagement,
duetotheusageoflargeamountsofhazardouschemicals,resultinginspatialinhomogeneityofchemical
industrialpronginforma-
tiontechnologiessuchasartificialintelligence(AI)arequitepromisingasameansofovercomingthese
diffinstate-of-the-artAImethodsandthecomplexsafetyrelationsintheprocessindustry,
weidentifyanddiscussseveraltechnicalchallengesassociatedwithprocesssafety:①knowledge
acquisitionwithscarcelabelsforprocesssafety;②knowledge-basedreasoningforprocesssafety;
③accuratefusionofheterogeneousdatafromvarioussources;and④effectivelearningfordynamicrisk
tandfutureworksarealsodiscussedinthiscontext.
ÓhedbyElsevierLTDonbehalfofChineseAcademyofEngineeringand
anopenaccessarticleundertheCCBY-NC-NDlicense
(/licenses/by-nc-nd/4.0/).
Articlehistory:
Received3January2019
Revised6August2019
Accepted22August2019
Availableonline2November2019
Keywords:
Processindustry
Smartmanufacturing
Greenmanufacturing
Artificialintelligence
uction
Theprocessindustry,whichisasubclassoftherawmaterial
industry,ecadesof
development,theprocessindustryhasmadesignificantprogress
inChina,makingChinaoneofthelargestmanufacturingcountries
[1,2].However,comparedwithdevelopedcountries,China’spro-
cessindustrynowurgentlyrequiresintelligentmanagementand
marketingtechnologiestoincreasetheutilizationrateofraw
materials,whileestablishingmorefunctionalenvironmentaland
suehasdrawnstrongacademic
attention,andmuchprogresshasbeenmadeinrelatedresearch
fields.
Recently,thedramaticgrowthofnew-generationinformation
technologieshaspromptedseveralcountriestoseeknewstrate-
giesforindustrialrevolution[3](Fig.1).TheUnitedStateshas
launchedSmartProcessManufacturing[4],whichaimsatindus-
yhasproposedthe
strategicconceptofIndustry4.0[3],whichfocusesontheintegra-
ted
⇑
Correspondingauthors.
E-mailaddresses:wangb07@(),yangtang@
().
Kingdom(UK),France,andJapanhaverespectivelyannounced
theUK2050strategy,theNewIndustrialFranceprogram,and
context,China’sgovernmenthas
putforwardNewGenerationofArtificialIntelligenceDevelopment
Planfortherealizationofthe‘‘newindustrialrevolution”[5].The
NewGenerationofArtificialIntelligenceDevelopmentPlancon-
centrateson‘‘innovative,coordinative,green,open,andshared
development,”whichiscapableofpromotingintelligent
manufacturing.
Inthecontextofthenationalstrategiesaddressingthenew
industrialrevolution,smartmanufacturingisthecurrenttrendin
theprocessindustry,withgreenmanufacturingasoneofitsindis-
pensablecomponents[1,6–8].Greenmanufacturingfocuseson
high-levelefficiencyandsafety,whichreflectstheneedforstricter
manufacturingcanberealizedwiththreemainobjectivesinmind:
①thereductionofenergyconsumptionandpollutantemissions;
②life-cycleprocess-safetymonitoringandriskcontrol;and
③r,
thereisnowell-understoodwaytoachievetheseobjectives.
Artificialintelligence(AI)[9],whichisacomprehensivefrontier
technology,hasattractedextensiveattentionworldwideforits
extraordinaryperformanceinAlphaGo[10].Today,AIisregarded
asoneoftheworld’sthreemostadvancedtechnologiesandhas
l./Engineering5(2019)995–1002
mentalprogramsproposedbyseveralcountriestoaddressthenewindustrialrevolution.
remarkablyaffectedseveralfields,includingcomputervision,nat-
urallanguageprocessing,er,itiswidely
believedthatAIiscriticalforsmartmanufacturing.
Inthispaper,thechallengesassociatedwithgreenmanufactur-
san
importantroleinimprovingprocess-safetymanagementand
increasingefficiencythroughtheintelligentutilizationofmaterials
ainderofthispaperintroduces
theexistingtechnicalchallengesofintegratingAIintotheprocess
industry[11].Themaincontributionsofthispaperareasfollows:
(1)ThecurrentstatusofprocesssafetyinChina’spetrochemical
industryissummarizedandmajorproblemsforachievinggreen
manufacturingintheprocessindustryareidentified;theseprovide
significantguidelinesforgreenmanufacturing.
(2)InviewofthecurrentstatusandmajorproblemsofChina’s
petrochemicalindustry,ourperspectiveisoffered:AIisthecore
ltechniques
areavailabletoaddressthesemajorproblemsinordertoachieve
greenmanufacturing,includingknowledgegraphs,Bayesiannet-
works,anddeeplearning.
(3)Consideringthecomplexsafetyrelationshipbetweenthe
processindustryandthecharacteristicsoftheprocessindustry,
severaltechnicalchallengesareputforwardregardingtheapplica-
hallenges
mayattracttheinterestoffutureresearchers.
rent
statusandproblemsofgreenmanufacturingintheprocessindus-
ialAItechniqueswithrele-
l
technicalchallengesrelatedtoAIingreenmanufacturingare
progressandfutureperspectives
arediscussedinSection5,followedbyconclusionsandanoutlook
inthelastsection.
tstatusandproblemsofgreenmanufacturing
anufacturing
Itiswidelyacknowledgedthatthemanufacturingindustryhas
experiencedthreeindustrialrevolutionsandisnowundergoinga
fourth(Fig.2).Eachofthefirstthreerevolutionstremendously
contributedtoproductivityandeconomicdevelopment[12].Thus,
itiswidelybelievedthatthefourthrevolution,termed‘‘smart
manufacturing,”willalsomakesuchcontributions.
Petroleumandchemicalsaresignificantcomponentsofthepro-
ingtotheNationalBureauofStatisticsofthe
People’sRepublicofChina,thepetrochemicalindustryhasbecome
oneofthepillarindustriesofChina’snationaleconomy,contribut-
ing12%ithtremen-
douscontributionstothedevelopmentofChina’snational
economy,thepetrochemicalindustryhasbroughtaboutnegative
effectsonbothpublichealthandenvironmentalsafety,dueto
long-termpollutioneffectsandfrequentaccidents[13].Inthe
informationera,industrialaccidentsarereportedandspread
worldwidethroughvariousnewschannelsandsocialmedia,mak-
tivatesthe
governmenttoestablishstricterstandardsandregulationsfor
thecorrespondingindustry,whichincreasesthedemandforgreen
majoraccidentssuchastheXiangshui
dustrialrevolutions.
l./Engineering5(2019)995–1002
997
‘‘3
Á
21”chemicalplantexplosionaccident,theTianjinPort‘‘8
Á
12”
fireandexplosionaccident[14],andtheQingdao‘‘11
Á
22”crude
oilleakingandexplosionaccident[15]notonlycausedserious
casualties,tremendouseconomiclosses,andsevereenvironmental
impacts,butalsohadanegativeeffectonthedevelopmentofthe
ernmentofJiangsu
Provinceplanstoclosemorethanhalfoftheexistingchemical
enterprisesby2022.
Inadditiontoprocesssafety[16],theenvironmentalimpactof
thepetrochemicalindustry—boththeshort-termimpactandthe
long-terminfluence—arisonwithdiscrete
manufacturing,theprocessindustryinChinaischaracterizedby
lowmaterialandenergyefficiency,andseriouspollutionproblems.
GiventhescaleoftheprocessindustryinChina’snationalecon-
omy,thereisanurgentneedtoreduceenergyconsumptionand
processemissionsundertheincreasinglyrestrictiverequirements
ofenvironmentalprotection.
Greenmanufacturing[17,18]isregardedasasolutionthatcan
achieveprocesssafety,energyconsumption,andemissionreduc-
totracksafety-relatedaspectsthroughouttheprocess
life-cyclebyintegratingsmartmonitoring,intelligentearlywarn-
ing,intelligentdecision-making,andoptimization-basedpollution
anufacturingcansignificantly
improvethesafetyandefficiencyoftheprocessindustries,andis
likelytobecomeanecessaryrequirementforhigh-leveleconomic
development.
tstatusandmajorproblems
Thecurrentstatusoftheprocesssafetyandenvironmentalpro-
tectioncapabilityofChina’spetrochemicalindustriescanbe
describedbyaccountingforthefollowingthreeaspects(Fig.3).
(1)ticalreportsissuedbytheNational
RegistrationCenterofChemicalsshowthatin2017,morethan
70000typesofcommonchemicalswereproducedandconsumed
inthemainlandofChina,3962ofwhichwerehazardouschemicals.
Ahazardouschemicalisachemicalthatcanpotentiallybeharmful
tothehealthofahumanoranimal,theenvironment,orproperty.
Withindecadesofdevelopment,Chinahasbecomeoneofthe
teAdminis-
trationofWorkSafetyreportsthatthenumberofhazardous
chemical-relatedenterprisesinChinaexceeds300000,withover
gthofthepipelinesexceeds120000
ateconomicvalueofthesechemicals—especially
hazardouschemicals—hasnotonlyresultedintherapiddevelop-
mentofthegrossdomesticproduct,butalsoledtoincreasingly
serioussituationsrelatedtoenvironmentalprotectionandpublic
safety.
(2)
ofthepopulationdistributionandeconomicmismatchinthewest-
to-eastdirectionofthemainlandofChina,thepetroleumand
chemical-relatedenterprisesaremostlylocatedintheeastern
coastalareas(Fig.4).However,foraspecificchemical,thelife-
cycleprocessesofproduction,storage,transportation,usage,and
wasteusuallyoccurindifferentplants,counties,cities,orevenpro-
ult,processsafetyandenvironmentalprotection
shouldbeconsideredonalargerspatialandtemporalscale;how-
ever,thisisnotaneasytaskduetothecomplexitiesassociated
withthedifferentstages,includingmaterialtreatmentandinfor-
mationfletheseissues,moreeffortisneededininfor-
mationintegrationanddataanalysis,whichcanbeachievedusing
AIandcloudcomputing.
(3)ic
developmentisimprovingthegenerallivingstandardinChina,
makingenvironmentaldeteriorationlessacceptableforresidents
nment-related
issuesareattractingincreasingattentionfrombothgovernment
eofpublicconsciousnessisdrivingthegov-
ernmenttodropthecrudemodeofeconomicdevelopmentand
tion,the13th
Five-YearPlanrequiresa20%reductioninthenumberofmajor
accidentsin2020anda20%reductioninthenumberofrelated
deaths,therebyincreasingthedemandforsmartprocess
monitoringandriskmanagementsystemsinthepetrochemical
industry.
Thecurrentstatusesofprocessindustriesotherthanthepetro-
chemicalindustryarequitesimilartowhathasbeendiscussed
roblemsthatprecludegreenmanufacturinginthe
processindustryarelistedhere.
(1)Informationisolationamongmultiplefields.
Inthepro-
cessindustry,thestagesofproduction,storage,transportation,
usage,r,eachstagefocuses
onitsspecificfieldsandhasitsowninformationanddatabasesys-
ity,theprocessesinthelife-cyclearephysicallycon-
nected;however,theyareusuallyisolatedfromtheperspective
opriateinformationexchange
amongdifferentprocesseshindersthecomprehensiveanalysisof
mple,ifinformationaboutmaterials
andthereal-timelocationofhazardouschemicaltransportation
canbeconsideredinthedynamicriskassessmentprocess,thelike-
lihoodofpotentialaccidentscanbeestimatedandriskcanbebet-
termanaged,withdynamicroutinesandemergencypreparedness.
spectsofthecurrentstatusoftheprocesssafetyandenvironmentalprotectioncapabilityofChina’spetrochemicalindustries.
l./Engineering5(2019)995–1002
butionofchemicalenterprisesinthemainlandofChina.
Thepossibilityofaccidentscanthenbereducedtoanacceptable
ore,integrating
abundantinformationandestablishingknowledgebasesarechal-
lengingtasksthatshouldbeaddressedfirstintheimplementation
ofgreenmanufacturingintheprocessindustry.
(2)Diverseinformationtypesanddifferentkindsofdata.
Fromthelife-cycleperspective,thedifferentstagesof,forexample,
manufacturing,storage,androadtransportationhavetheirown
ifferencesoccurin
mple,thevalues
ofthetemperature,pressure,level,andsoforthareimportant
becauseofembeddedinformationregardingabnormalsituations
comestotransportation,
theroutes,enterprises,real-timelocations,vehiclestatus,anddri-
vers’r,this
informationbelongstodifferentsystemsthataredifficulttocom-
municateorintegrate,nottomentiondifferencesinthedatasam-
plingrate,dataformats,ssues
posedifficultiestotheintegrationofsafety-relatedinformation
er,therearevariousdisciplines
behindthedatacollectedduringdifferentlife-cycleprocesses,
andtheintegrationofbothfactualdataandknowledgeintoacon-
sistentsystemisanotherchallengingtask.
(3)Lackofaprocess-safety-orienteddecision-makingsys-
ge-scaleproductionintheprocessindustry—especially
inthepetrochemicalindustry—geometricmagnificationisthebest
waytoreducecostsandgainthebenefi-scale
productionthenresultsincomplexsupplychainsandmarkingsys-
ustryspreadsoutofonecity,oneprovince,andfinally
strialchains,the
productionanddemandindifferentspatialandtemporalregions
requiresnationaltransportationandstoragenetworks,covering
bulkstorageofhazardouschemicalscouldposeamajorriskto
comestoproduction,thescale-upof
theprocessrequiresafullyfunctionalcontrolsystem,correct
humanoperation,
handledcorrectlyintime,anysmallmistakesorfailuresmight
rwords,intermsofrisk,too
manyfactorsarecorrelatedandtheirinteractionsareusuallynot
nagementistakenintoaccountduringthedesign
ofmodernpetrochemicalplants,byintegratingmultiplepractical
hazardousidentificationandmanagementtechniquessuchashaz-
ardandoperabilityanalysis(HAZOP),layerofprotectionanalysis
(LOPA),andsystemintegritylevel(SIL).Yettheseanalysesare
somewhatstaticandtherelevantdocumentationisbeyondthe
reachofonsiteoperators,whoneedtobefullyawareofthe
behaviorofoperatorsishighlydependentontrainingandmanage-
ntsrecentlyoccurredattheGermanchemicalcom-
panyBASF[19,20],resultingincasualtiesandeconomiclosses.
Thecauseoftheaccidentswascloselyrelatedtooperationerrors
sereflectsthenecessityofhaving
adecision-makingsystem,whichissignificantforoperationsafety.
Thus,thereisademandforanintelligentsystemthatcantake
advantageofthestaticknowledgeembeddedinexisting
documentssuchasHAZOP,LOPA,andSIL,inordertodynamically
asystemmightimprovesafetymanagementbytakingmore
safety-relatedfactorsintoconsiderationthanahumanworkerin
rkeyaspectofsafetypractice
isinherentlysaferdesign—aconceptthatpermanentlyreducesor
eliminatesthehazardsassociatedwithmaterialsandoperations
usedintheprocess—whichiswidelyappliedthroughthevery
earlystagesofprocessdesign,normaloperation,andchange,until
alprocesseshavestructural
licationofan
inherentlysaferdesigninonechemicalprocessfacilitywouldset
rtosupportsafety-
orienteddecision-makinginabroaderview,thebasicruleandcon-
ceptofinherentlysaferdesignmustbeextractedandintegrated
intointelligentsystems,alongwiththeexperiencesgainedfrom
y,thegeneralchallengeofestablish-
ingadecision-makingsystemforprocesssafetyliesinhowhuman
experienceandknowledgewritteninnaturallanguagecanbe
understoodandusedbymachines.
(4)ro-
cessindustry,mostaccidentsbecomeseverebecauseofthelackof
aneffectivewarningmechanism[21].Ingeneral,apetrochemical
processrunsinmultipleconfigurations,eachwithitsownopera-
tionalwindowand/rocessiscontrolledby
automationsystems,smallfluctuationsinprocessparameters
canspreadtothedownstreamprocessesandaffectcriticalunits.
Thecomplexinnercorrelationsoftheprocessparametersusually
makethesechangesandfluctuationsincriticalunitsnon-
ent,processsupervisors
processfunctioningrequirestheabilitytorecognizeabnormal
situationsbasedonsophisticatedprocess-monitoringsystems,in
ordertoidentifyactualprocessconfi
diagnosisfunctionsshouldworkinrealtimetoevaluatethecur-
rentriskandpotentialshiftsofnormaloperationconfigurations
stantdecision-makingsystemisneeded
thatcanprovidepossiblecausesforthecurrentsituationand
u-
nately,nosuchsmartsystemiscurrentlyavailable.
ficialintelligenceforgreenmanufacturing
AI[22],usuallyreferredtoasmachineintelligence,hasbecome
-
binesdomainknowledgefromcomputerscience,automation,
informationengineering,mathematics,psychology,linguistics,
blemsfacedbyAIhavebeenseparatedinto
severalsub-problemsbasedonspecificcharacteristicsorcapabili-
ties,asshowninFig.5.
Thefourmajorproblemsingreenmanufacturingcanbedivided
intothreecategories,accordingtotheircharacteristics:①infor-
mationintegration,②dynamicriskassessmentandaidin
decision-making,and③ltechniquesare
availabletoaddresstheseproblemsandachievegreenmanufac-
turing,includingknowledgegraphs,Bayesiannetworks,anddeep
learning,whichwillbedetailedinthefollowing.
l./Engineering5(2019)995–1002
999
lsub-problemsinartificialintelligence.
ationintegrationviaknowledgegraphs
Aknowledgegraphisafamousandpromisingtechniquefor
organizinglinkeddatainthefitructuredsemantic
er,
knowledgegraphscanprovidereasoningandinferencecapabilities
basedonrulesordeeplearningstrategies,andthesecapabilities
empowertheimplicationofrelationsbetween‘‘entities”within
predefidgegraphsarewidelyusedin
Internet-basedapplicationssuchasencyclopedias,socialnet-
works,onlinefinancialsystems,andsocialsecuritysystems
[23,24].
UnlikethegeneralknowledgeusedinInternet-relatedapplica-
tions,theprocessindustryrequiresmuchgreaterspecializationin
chemicalengineering,processsafety,processcontrol,automation,
lementationofknowledgegraphs
insuchaspecializedindustryrequiresnotonlyfactualinforma-
tion,butalsothespecificknowledgeforthefidge
modelingisusuallydifficult,andadeepunderstandingofthe
specificfihegeneralproceduretobuilda
knowledgegraphofanarbitrarydomain(Fig.6)[25],theestablish-
mentofknowledgegraphforprocesssafetycanberoughlydivided
intothreestages:gatheringprocess-safety-relatedinformation,
knowledgefusion,andknowledgeprocessing,asshownbelow.
(1)structionof
aknowledgegraphstartswithgatheringrelevantinformation[26]
aboutprocesssafety,includingchemicals,reactions,process-
relateddocuments,controlsystems,mechanicalinformation,and
erageofthisinformationanddata
shouldbebroadanddiverse,coveringnotonlystructuraldatabut
alsodiagrams,tables,andtextswritteninnaturallanguage.
Becausethekeypurposeofknowledgegraphsistogeneratelinked
data,themainchallengeistoidentifyindividual‘‘entities”and
rocesses
areusuallyreferredtoasentityextraction,relationshipextraction,
andattributeextraction[27,28].
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