第三届化安赛技术组文件选手哆啦梦

1、The 3rdNational Universities Students competition of Chemicals Design.safetyJiangsu Xinhai Petrochemical Co. Ltd. Clean & Saving & SafeSWPUDoraemonInstructor: Dr. Yu Members: Chai ,Xu,Luo Tang,Yang,Tao200kt/a Propylene Oxide Cleaner Production ProjectThe 3rd National Universities Students Competitio

2、n of Chemical Process Safty Design Sponsored by TotalXuChaiLuoYangTangTaoIntroductionofGroupMembersSWPU - DoraemonDr. YuProject SummaryEquipment Design Process Design Project Background OutlineSafety & EnvironmentSWPU - DoraemonProject Background Market analysisMaterial & Process selectionSelection

3、of plant locationSWPU - DoraemonWhy we have chosen PODomestic supply shortage, apply on import.Products in short supplyThe supply and demand of PO in recent yearsProject Background01 market analysis02 material &Process selection03 selection of plant locationSWPU - Doraemon01 market analysis02 materi

4、al &Process selection03 selection of plant locationChlorohydrin Method：Mature technology and low investment. However, the consumption of a large number of chlorine, hypochlorous acid corrosion of equipments, lime slag and chlorinated wastewater treatment investment.Project BackgroundSWPU - DoraemonC

5、ooxidationMethodChlorohydrin MethodDirect Oxidation01 market analysis02 material &Process selection03 selection of plant locationCooxidationMethodChlorohydrin MethodDirect OxidationCooxidation Method：a. Ethylbenzene b. isobutaneLong process flow 、 High demand of avoiding blast、Big investment 、 High

6、raw material requirements and strict operation conditions.Project BackgroundSWPU - Doraemon01 market analysis02 material &Process selection03 selection of plant locationSimple process flow and little occupied area. This method had advantages of high yields, short reaction time and mild reaction cond

7、itions with, few waste gas, waste liquid and waste residue. Basically no pollution，belongs environment friendly cleaner production system.Direct oxidation of propylene oxide (HPPO) technology for the Twelfth Five Year period of technological innovation key projectsDirect OxidationProject BackgroundS

8、WPU - Doraemon01 market analysis02 material &Process selection03 selection of plant locationTrans-portationResource advantageMaterial supplyIndustrial baseHuman resources Located in the center of East ChinaMost economically dynamic regionHub of East and west Hydrogen peroxide manufacturerPark offerN

9、ational importantand industrial baseHigh qualityLow cost StabilityJiangsu Province, Lianyungang City zhewang Port Industrial ZoneProject BackgroundAdvantagePositionSWPU - Doraemon Process Design Technological process Technological process Integration energy-savingSWPU - DoraemonTechnological process

10、 1 Technological features2 Integration energy-saving3Process DesignSWPU - Doraemon1234Whole processPropylene and methanol recycling, recycling of propylene into the reactor, the separation of the methanol cycle continue to use as a carrier. For the separation of the part of the common boiling, it al

11、so uses the way of the Twin Towers to get the product, and improve the economic benefit.Technological process 1 Technological features2 Integration energy-saving3Process DesignSWPU - DoraemonCirculating material and saving energyPropylene 、 Methanol circular diagramTrait 1Trait 2Separation of propyl

12、ene oxide The method uses water as the lotion to separate the methanol from the water layer, at the same time use rectification under vacuum, to obtain the high purity propylene oxide.ParameterPO rectifying towerpressure/bar0.8D/F0.1420Mass rr5.2Stage70Feed stage50Water feed stage2Technological proc

13、ess 1 Technological features2 Integration energy-saving3Process DesignSWPU - DoraemonSeparation of methanol and waterThe methanol content in the feed was adjusted by the cyclic methanol, and the separation of ethanol and water was achieved by the method of common distillation. twin columnParameterT0

14、301T0302pressure/bar11Stage2464Mole rr3.04.15D/F0.79250.9435Feed stage1640Technological process 1 Technological features2 Integration energy-saving3Process DesignSWPU - DoraemonC methanol0.615 mol% Trait 3Rectification of by-productUsing benzene as extractant for extractive distillationPMs boiling p

15、oint is 30 degrees lower than benzene. Technological process 1 Technological features2 Integration energy-saving3Process DesignSWPU - DoraemonTrait 4Range TargetsDT：10Process DesignTechnological process 1 Technological features2 Integration energy-saving3SWPU - DoraemonComposite Curves10Process Desi

16、gnTechnological process 1 Technological features2 Integration energy-saving3SWPU - Doraemon heating utility :LP steam MP steam cooling utilities ：Cooling water Air Propylene Propylene glycolGrand Composite CurveProcess DesignTechnological process 1 Technological features2 Integration energy-saving3S

17、WPU - DoraemonHeat exchanger network Process DesignTechnological process 1 Technological features2 Integration energy-saving3SWPU - DoraemonProjectHeating utility (KJ/h)Cooling utilities (KJ/h)Number of unitsBEFORE3.3E+085.34E+0817AFTER2.17E+084.22E+0818Saving1.131081.12108Saving percentage34.25%20.

18、97%Process DesignTechnological process 1 Technological features2 Integration energy-saving3Heat saving tableSWPU - DoraemonSafety pre evaluation Project overviewProcessevaluationGeographical environmentHazard identificationSafety countermeasuresCompilations of SSASWPU - DoraemonSafety pre evaluation

19、SWPU - DoraemonHydrologyGeographical EnvironmentGeologyWeatherTransportationFlood stageEarthquakeEnergy supplySWPU - DoraemonSite of a factoryand geogapmcal environmentN0.1NO.2General layout of plantN0.3Road transport and buildProcess engineeringNO.4NO.5Production equipmentNO.6Work environment and m

20、anagement measuresHazard IdentificationSafety pre evaluationmajor hazardsSWPU - DoraemonCategoryNameCritical mass (T)Actual volume (T)Is a major risk source or noOxidizing substancesH2O22022311YESFlammable gasC3H65015407YESFlammable liquidCH4O50016NOHazard IdentificationSafety pre evaluationmethod o

21、f assessmentPre risk analysis01Hazard and operability study (HAZOP)02Dow Chemical Index Evaluation Method03Safety pre evaluationSafety CountermeasuresSWPU - DoraemonPre risk analysisRegular maintenance, dry ventilationFire Chemical explosionRegular inspection, groundingFire Chemical explosionThe hol

22、der, set up protection deviceMechanical injuryNon slip shoes, safety beltHeight fallVentilation and heat insulationBurn and scaldVentilation and trainingPoisoning suffocationRegular maintenance, guarantee qualityPhysical explosionPOstorage tankSafety pre evaluationSafety CountermeasuresSWPU - Doraem

23、onSite environmental conditions and safety measuresWind direction, seismic belt, flood water level, transportation, etc.Safety measures for plant layoutSafe distance, safety protection distance, fire prevention, lighting, etc.Road safety countermeasuresDesign width, road signs, etc.Building safety c

24、ountermeasuresFire rating, building materials, fire safety, etc.Production process safety measuresAccording to the physical nature of the protective deviceSafety measures for production equipmentRegular maintenance of equipment and facilitiesSpecial equipment safety measuresMainly related to the pre

25、ssure vessel, pressure pipeline maintenanceOperating environment security measuresTemperature environment, light environment, color environmentSafety management measuresOccupational health, HSE, emergency planSafety measures for waste disposalWaste water and waste residueBrief introductionSafety pre

26、 evaluationSWPU - DoraemonConstruction project safety conditionsConstruction project safety production conditionsConstruction project policy complianceExternal conditions for construction projectsMeasures for the construction of the projectConstruction project equipment facility complianceSafety pre

27、 evaluationEvaluation ConclusionWe can do it!Equipment DesignDesign toolReactorTowerHeat exchangerSWPU - DoraemonEquipment DesignAspen PlusCOMSOL Cup TowerHTRIBasic parameters Reactor designSelection of heat exchanger Design toolSW6SWPU - DoraemonTower design sizeMechanical strength checkGas leak ra

28、tem/s2.8589Overflow strengthm3/(h*m)51.3721flow parameter0.0641Plate upper liquid height m0.0742crest over the weirm0.0392Plate upper liquid resistancem液柱0.0371Dry plate pressure drop m液柱0.0608Total plate pressure dropm液柱0.0979 entrainmentkg液/kg气0.0229 er flood%64.4435Liquid height of drop liquidm0.

29、1875Drop down times6.2342Drop tube bottom gap resistancem液柱0.0154 stability factor2.5770The minimum residence time of the liquid drop tubeS3.0000Equipment DesignDesign toolTowerAll are floating valve towers.High efficiency, wide operation range.Aspen PlusCup-towerSW6SWPU - DoraemonCup Tower SW6Tower

30、 plate structure parametertower diameter（m）4.80hole count（#）1818.67Plate spacing (m)0.4500Hole density（#/m2）124.76Cross-sectional area （m2）18.0956Overflow process2Hole area（m2）14.5770Weir formFlat weirOpening rate（%）12.00Process calculation resultsEmpty tower gas velocitym/s0.8841Air column kinetic

31、energy factorm/s(kg/m3)0.51.5462Hole speed m/s7.3673Hole kinetic energy factorm/s(kg/m3)0.512.8851Design toolTowerEquipment DesignReactorA one-dimensional model is established. Determine the reaction mechanism.Select dynamic equation. Consult literatureTubular reactorsKinetic equationCOMSOLSWPU - Do

32、raemonfunction jifenclear all;clc %a=0;b=0.98; %x=a:0.01:b; %y=f(x);y=quadl(f,a,b); %disp(result：) %disp(y)function y=f(x)y=9756.2./(215.7.*(1-x).0.95-0.266.*x.0.62); %Design toolTowerReactorBy solving the one-dimensional model MATLAB tubular fixed bed.Calculation code listEquipment DesignSWPU - DoraemonTIME:1700sReaction volume:VR69.31m3 Consult literatureTubular reactorsKinetic equationCOMSOLEquipment DesignDesign toolTowerReactorHeat exchangerAspen simulation of the whole plant for the heat network d