简介：简介了大型高纯氮设备配套膨胀机的技术参数及要求,结合5000m3/h高纯氮设备膨胀机的设计经验,分析了膨胀机设计中的主要技术难点的解决方法及方案优化;同时,结合现场试车数据对膨胀机进行了性能分析。

简介：Inordertoimprovetheservicelifeofcorundumliningforinductionfurnace,corundumdryrammingmixwaspreparedusingbrowncorundum,fusedmagnesia,andα-Al2O3micropowderasmainstartingmaterials,andtheinfluenceofα-Al2O3micropowderadditions(0,1%,2%,and3%,inmass)onpropertiesofcorundumdryrammingmixwasinvestigated.Theresultsshowthatafterheattreatingat1600℃,withtheincreaseofα-Al2O3addition,thepermanentchangeindimensionsonheatingofthespecimensdecreasesfirstlyandthenincreases,bulkdensityincreases,apparentporositydecreases,andthecrushingstrengthdeclinesfirstlyandthenenhances;whentheadditionofα-Al2O3is2mass%,thepermanentchangeindimensionsonheatingofthespecimensisrelativelysmallandthecrushingstrengthdecreasesto22.8MPa.TheXRDandSEMresultsshowthatafterfiringat1600℃for3hsmallgranularmagnesiumaluminatespinelformsandiswelldistributed,whichenhancesthedensity.

简介：开发了一种适用于合成气、高含量CO气、乙烯、富烃气、高纯氢气等气源的TO-3贵金属脱氧催化剂。该催化剂低温活性好、选择性高，使用空速高（-6000h-1），可将原料气中0．002％-1．0％的氧脱除至（1-10）×10^-6（V/V）以下，且与CO副反应少。多种实际工况条件下的应用表明，TO-3贵金属脱氧催化剂性能优异、稳定性好。

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简介：TheAl2O3-SiCcompositepowderswerepreparedinargonatmosphereusingcoalgangueandcarbonaceousmaterials3-SiCcompositepowderswereinvestigated.Theresultsindicatethat:temperature,soakingtimeandchlorideadditivehavesignificantinfluenceonthesynthesizedAl2O3-SiCcompositepowders.Basedontheresults,theoptimizedAl2O3-SiCcompositepowders（Al2O358mass%andSiC42mass%）withparticlesized50≤5μmwerepreparedusingcoalgangueandcarbonblackasstartingmaterialsafter3hfiringat1550℃.andproperadditiveadditioncouldreducethetemperatureby50℃.

简介：2011年3月10日,渭化集团公司领导、技术人员和施工单位代表齐聚3期控制室,举行3期项目气化炉投料仪式。上午11时35分,随着DCS监控画面显示装置运转正常、现场火炬燃烧平稳,渭化3期400kt/a甲醇装置气化炉1次投料成功。

简介：简要介绍了河南煤化集团安化公司煤制乙二醇200kt／a装置中3MCL526型CO离心机试车过程，详细叙述了装置在试车运行中出现的问题及处理。

简介：AA3月同内己二酸及其盐和酯进口数量2582．1吨，平均单价1941美元／吨，进口量较上月减少54．62％。

简介：Thekineticprocessofslagcorrosionforβ－Sialonandβ-Sialon-Al2O3compositeshasbeenstudiedbymeansofdipmethod(staticandself-rotating),Thecorrosionmodelisbuitlandtheformulaofcorrosionrateisdeduced,whichareinaccordancewithexperimentalresults.

简介：Simplethree-pointbendingtestatambienttemperaturecharacterizedthemechanicalbehaviorofburnedAl2O3-Crefractoriesbeforeandafterthermalshockinassociationwiththeprocessingparameters(graphitecontentandcokingtemperature,etc.).Theresultsshowedthatnon-linearplastic-elasticbehaviorunderloadlowerthancoldmodulusofrupture(CMOR)wasregisteredinallspecimensandreallinearelasticbehaviorcouldbeidentifiedafterthefirstload.Thetotaldeformationcouldbedividedintotwoparts,plasticandelasticareas.ThegraphitecontentandjointbondingsystemofcarbonandceramicphaseswereresponsibleformechanicalbehaviorofAl2O3-Crefractories.

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简介：TheeffectoftheadmixturesofAlandSimetalsandB4CandMgAlONcompoundsontheoxidationofMgO/Si3N4compositerefractoryhasbeenstudied,whichisapromisingcarbonfreerefractoryforsteel-makingapplicatlon.Thefourkindsofadmixturescanbeusedasanti-oxidantsforSi3N4,butthemixtureofAlandSiachievedthebestresult.Themixturecannotonlyplaytheroleasantioxidant,butalsoassistthesinteringprocessandhelpformdensesinteringlayer,improvingthepropertyofthecomposite.

简介：UsingAl2O3-MgOcastableinlargeladlecanavoidcontainationofmoltensteelfromcarbon-containingrefractoriesandincreasladleservicliferemarkably,Theadditionofmagnesiaandfinepowder,theeffectofgrainsizeontheproper-tiesofthecastable,especiallylinearchangeandstructurespallinghavebeenstudied,Castablepro-duedforlargeladlewithsmallweareratehasgotgoodapplicatioresult.

简介：介绍了ZL型系列专用炉箅在Φ3m炉上应用情况。通过实践表明各类型炉气炉，只有应用专用炉箅，才能实现炉膛截面布风合理，最终达到降低煤耗和提高气相强度的目的。

简介：本文着重介绍了无水MgCO3正盐是一种新型镁盐阻燃剂，它的最大特点是在355～490℃分解温区内释放出52．2％纯CO2阻燃气体，生产产品的专利工艺具有介质全循环特点，期待与企业合作将无水MgCO3阻燃剂早日推向市场，为我国镁资源的利用开辟一条新的路子。

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简介：本文研究了高分子包覆剂处理纳米CaCO3填充LDPE复合膜的力学性能。结果表明．借助纳米粒子的表面效应以及高分子包疆剂的作用。加入少量的纳米粒子。复合体系的拉伸强度、断裂伸长率和直角撕裂强度均有不同程度的增加。

简介：Cr2O3canbesinteredwellat1500℃incarbon-embeddedconditionorH2atmosphere.Butthehighchromebearingrefractoriescannotreachdensificationwhensinteredat1700℃for10hinweakreducingatmosphereformedbythecombustionoffuel,anditsapparentporosityisabout18%.Thehighchromebearingrefractoriesaremainlyusedincoalgasifiers.Thetemperatureinthefurnaceisabout1500℃andtheproductsareH2andCO,whicharejustthesinteringconditionsofthedensechromerefractorieswithapparentporositylessthan10%.Thehighchromebearingrefractoriesusedincoalgasifiersmaybesinteredagainandthenshrink,destroyingthegasifierlining.Thethermodynamiccalculationshowsthatitissafeaboutthehighchromebearingrefractoriesusedingasifiers.Itisalsoexplainedthatthehighchromebearingrefractoriescan’tbesintereddenselyinweakreducingatmosphereformedbythecombustionoffuel.Thenewsinteringtechnologiescanbeusedtoimprovethebulkdensityofthehighchromebearingrefractories.