共查询到19条相似文献,搜索用时 234 毫秒
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应用新型填料塔、高效复合塔、热网络等新技术设计改造化肥工业中的分离设备,既达到增产、节能、降耗的目的,又能减少环境污染。 相似文献
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论述了福建乙烯装置脱瓶颈分离冷区改造的工艺设计。对分离改造最复杂的裂解气深冷和脱甲烷系统及二元制冷和丙烯制冷系统、碳二分离系统的改造设计进行了说明,突出了深冷系统的关键设备新冷箱的设计特点及冷区塔系统改造方案。装置开车成功表明国产化乙烯工艺技术更完善和成熟。 相似文献
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盘锦化肥厂原设计年产合成氨6万吨。1992年引进了卡萨利必1000轴径向氨合成塔内件,年产能力达8万吨。改造后,经生产考核,其氨净值、氨产值等主要工艺指标均未达到设计值。除合成塔内件存在一些问题外,原氨分塔和冷凝塔内件的分离段也都不适应新工艺的要求。两个塔的液位控制不稳定,当原料气量和氢比有较大波动时,不是排氨管跑气就是合成塔带液。1995年8月份,在进行合成塔内件改造时,对氨分塔和冷凝塔内件的分离段也进行了技术改造。现将两塔的技改情况简介如下。1氨分塔内件的改造情况1.1原氨分塔内件结构及缺陷我厂氨分塔的高压外… 相似文献
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随着催化装置扩量,液化气产量增加了,原10万吨/年气体分馏装置已经不能满足液化气加工需要,需进行扩能改造,经过对脱丙烷塔和精丙烯塔进行改造,以及部分机泵和换热器改造,达到13万吨/年处理量的需要。装置改造后运行平稳,达到设计指标。 相似文献
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以CO2激光裂解器和SC100型气相色谱仪组成一套裂解色谱装置,在裂解室对标样聚乙烯切片、聚氯乙烯切片和聚丙烯切片进行裂解色谱试验。得出样品标准图谱用以定性分析,并对未知聚合物的聚集态、化学结构和聚合物主要成份进行鉴定,考察了裂解温度、柱箱升温速率、载气流速、色谱柱尺寸等因素对裂解色谱分析的影响,收到了一些有益的效果。 相似文献
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This paper discusses the criteria for obtaining an improved performance of structured packing columns in gas-liquid contacting, by improving the liquid and gas distributors. A new liquid distributor design, specific for structured packing columns is presented. Experimental measurements which quantify the improvements attained by the new distributor are also presented. Furthermore, gas flow distribution requirements for structured packing columns are discussed. Three “case studies” indicative of the implementation of the proposed distributor concept in industrial columns are included. Case (a) CO2/MEA removal column, case (b) ammonia splitter and case (c) acid gas neutralization column. 相似文献
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从设计角度对燕化200kt/a气相法聚丙烯装置的技术改造进行了详细分析和说明。装置改造获得了最大的经济效益,为国内同类装置进行技术改造提供了经验。 相似文献
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分析了聚丙烯装置开工及试运行期间存在的问题,提出了相应的解决措施及方案.通过技术改造如增加固碱塔,调整操作方案如丙烯循环脱水、增加三乙基铝投加比例,确保丙烯分析的准确性如在丙烯取样口现场做样、丙烯取样瓶氮气置换等措施,使装置一次试车成功,各项工艺、质量指标均达设计要求. 相似文献
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Carter Litchfield R. D. Harlow Raymond Reiser 《Journal of the American Oil Chemists' Society》1965,42(10):849-857
To determine optimum operating conditions, an extensive study was made of the variables affecting quantitative recovery and
resolution of model triglyceride mixtures. Parameters investigated included: flash heater temperature, carrier gas flow rate,
type of carrier gas, column length, glass and metal columns, temperature program rate, linearity of detector response, physical
design of gas chromatograph, and molecular species of triglyceride.
Results indicate that with optimum operating conditions, triglyceride molecular weights through trierucin can be quantitatively
analyzed. Accurate calibration is essential, since quantitative response factors vary somewhat with operating conditions,
triglyceride carbon number, and the chromatograph used. Cocoa butter and rat adipose tissue triglycerides have been quantitatively
analyzed by this technique.
Presented at the AOCS meeting in Houston, Texas, 1965. 相似文献
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对比了原50 kt/a LPG分馏塔采用的浮阀塔板与大通量新型高效塔板——立体传质塔板(CTST)的处理能力。说明了应用新塔板技术,仅将原液化气分馏塔的浮阀塔板更换为立体传质塔板(CTST),原塔外壳、塔板层数塔及内固定件不变,处理能力提高60%以上,经济效益显著。 相似文献
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Despite the fact that relatively little is known about the ultimate resource potential of natural gas hydrates, it is certain that gas hydrates are a vast storehouse of natural gas and significant technical challenges need to be met before this enormous resource can be considered an economically producible reserve. In this theoretical study, a simulation scheme was suggested to produce NGH in an industrial scale using pure water as a carrier and seawater as a cooling source. Parametric study was carried out and rigorous design calculations for different operating parameters were investigated. Further more and economical evaluation was done taken data of locally produced LNG as a comparison. Production rates, storage and transportation from production region to consumer's ends were investigated. Results obtained suggested that NGH with little consideration can be a good alternative for fuel gas carrier. 相似文献
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针对一种新型隔板塔气相分配器,搭建了一套直径600mm、高度5600mm的隔板填料塔冷模实验系统,探究了液相分配比变化对气相分配比产生的影响以及新型气相分配器在隔板填料塔内的分配效果。结果显示:在本实验系统中,液相分配比在1~6之间变化时,隔板塔内气相分配比与液相分配比呈负相关的关系,即液流喷淋密度增大的一侧气体量反而会减少,气相分配比最多可由0.95降至0.6左右,这使得隔板塔远离高效操作区,严重影响了隔板塔内的传质效率;喷淋密度分别为6.27m3/(h·m2)、9.41m3/(h·m2)、15.68m3/(h·m2)时,分配器在隔板填料塔中具有较好的分配性能,可以通过分配器上的调节液位高度,使得喷淋密度增大的一侧,气相流量增多,气相分配比可由0.85调节至1.25左右,加强了气液两相传质,保证了隔板塔的高效运行。 相似文献