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氧氯化

氧氯化的相关文献在1986年到2023年内共计292篇,主要集中在化学工业、化学、石油、天然气工业 等领域,其中期刊论文61篇、会议论文5篇、专利文献140020篇;相关期刊35种,包括化工经济技术信息、华东科技、石油和化工设备等; 相关会议3种,包括第33届全国聚氯乙烯行业技术年会暨“科创杯”论文交流会、中国化工学会2008年石油化工学术年会暨北京化工研究院建院50周年学术报告会、1999年全国PVC技术年会等;氧氯化的相关文献由454位作者贡献,包括吴江、齐兰芝、贾春革等。

氧氯化—发文量

期刊论文>

论文:61 占比:0.04%

会议论文>

论文:5 占比:0.00%

专利文献>

论文:140020 占比:99.95%

总计:140086篇

氧氯化—发文趋势图

氧氯化

-研究学者

  • 吴江
  • 齐兰芝
  • 贾春革
  • 宋静
  • 齐涛
  • 曲景奎
  • 李斗星
  • 穆晓蕾
  • 黄凤兴
  • 王雨
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 田婷婷; 田昌旻
    • 摘要: 分析了中国石油大连石化公司连续重整装置催化剂失活原因,并对该装置重整反应、再生操作工艺参数进行优化调整,对再生单元流程进行改进,考察了催化剂再生效果.结果表明:催化剂在高苛刻度条件下进行反应,催化剂会因快速积炭而失去活性;通过采取将缓冲区料位计阻尼值由20 s降为15 s,降低蒸发塔压力至0.85~0.88 MPa,提高回流比至0.3~0.4,控制烧焦氧体积分数在0.50%~0.55%,将再生催化剂注氯量由16 kg/d提高至18 kg/d,提高再生电加热器和空气电加热器的出口温度分别至480~485°C,560~565°C,设置双注氯加热夹套等改进措施,重整反应温降逐渐由172°C提高至295°C,且处于稳定状态;重整待生催化剂氯质量分数由0.86%增至1.00%,再生催化剂氯质量分数由0.97%提高至1.13%;脱戊烷塔塔底油C≥8非芳烃质量分数由2.97%逐渐降至1.93%,研究法辛烷值由89提高至约100,苯收率由3.5%提高至5.5%;氯化温度由420°C提高至540°C,氢铂比由0.72提高至0.95,催化剂性能得到大幅提升.
    • 孙宝灿
    • 摘要: 重整催化剂活性要求其酸性功能和金属功能稳定,而在连续再生过程中,烧焦会导致催化剂Pt金属聚集、氯含量降低,氧氯化区有效操作是恢复催化剂活性的关键因素之一.文章介绍了四川石化2041kg·h-1催化剂连续再生装置氧氯化区运行遇到的问题和处理方法,供需要提高氧氯化效果的装置参考.
    • 摘要: 2019年初记者从淄博广通化工有限责任公司了解到,该公司开发的氧氯化错生产新工艺和装备实现了生产过程“三废”的达标排放和综合利用,每吨氧氯化错产品消耗降低约5%,生产用工减少约38%,氧氯化箔生产实现了技术升级,经济和社会效益显著。
    • 方丽; 袁向前; 宋宏宇
    • 摘要: Reaction thermodynamic analysis of preparing perchloroethylene through the oxychlorination of 1,2-dichloroethane and oxygen and hydrogen chloride was obtained.Experiments was carried out to evaluate the effect of different reaction parameters such as temperature,space velocity,the ratio of HCl to EDC and of O2 to EDC on the results of oxychlorination under the direct role of Deacon reaction catalyst.Thermodynamic analysis show that the reaction of producing perchloroethylene is a exothermic reaction which can happen spontaneously with high conversion,and can be promoted by decreasing temperature.The experimental results show that 99.2% conversion of EDC,86.23% selectivity of perchloroethylene can be obtained at 410°C with 0.54 h-1 of mass hourly space velocity of EDC,2.76 of the molar ratio of HCl to EDC,and 1.97 of the moral ratio of O2 to EDC.%对1,2-二氯乙烷、氧气、氯化氢氧氯化制四氯乙烯反应体系进行了热力学分析,并通过实验考察了在Deacon反应催化剂的直接作用下,反应温度、反应空速、氧气及氯化氢与1,2-二氯乙烷间的物质的量比对反应结果的影响.热力学分析表明,生成四氯乙烯总反应为自发向右进行较完全的放热反应,适当降低温度有利于反应的进行.实验结果表明,较佳工艺条件为:反应温度410°C,空速0.54h-1,氯化氢、氧气和1,2-二氯乙烷三者的物质的量比2.76:1.97:1.在此条件下反应,1,2-二氯乙烷的转化率为99.20%,四氯乙烯的选择性可达到86.23%.
    • 赵东涛; 王浩
    • 摘要: 结合聚氯乙烯搬迁项目,将搬迁后新建乙烯氧氯化法生产聚氯乙烯项目与搬迁前的电石法生产聚氯乙烯项目,从环保效益上进行分析对比.
    • 王磊; 张磊
    • 摘要: 分析了中国石油辽河石化公司0.6 Mt/a连续重整装置出现铂锡双金属催化剂氢铂比(原子比,下同)低的原因并提出了解决方案.结果表明,再生系统注氯效果差和再生器氧氯化区温度低是造成再生铂锡双金属催化剂氢铂比低的主要原因.通过疏通催化剂注氯线、降低氢油体积比、调整测温点位置等措施,催化剂氢铂比由0.37恢复至0.90.
    • 花海; 崔咪芬; 费兆阳; 陈献; 汤吉海; 乔旭
    • 摘要: 为高效、环保地生产三、四氯乙烯,同时解决副产氯化氢的出路问题,通过对二氯乙烷氧氯化制三、四氯乙烯反应体系的剖析,提出以氯化氢为氯源的两段反应串联新工艺。在第1段中仅仅发生氯化氢氧化反应,第2段中二氯乙烷与生成的氯气及未反应完的氧气发生一系列氧氯化反应制三、四氯乙烯。该工艺有效避免了二氯乙烷及其他有机氯的深度氧化;而且采用该工艺,每一段可采用不同的催化剂和不同的反应条件,以适应不同的反应需求。第2段采用的催化剂是在第1段采用的负载于Y分子筛的Ce-Cu-K复合催化剂基础上改性优化而成,适宜的钾铜质量比为0.73;当催化剂活性组分负载量达到45.5%时,三、四氯乙烯收率最优。同时对第2段反应条件进行了优化,结果表明适宜的工艺条件为:反应温度430°C,二氯乙烷重时空速0.5 h-1,二氯乙烷、氯化氢与氧气三者的进料摩尔比1:2.4:1.8;此时三、四氯乙烯收率最高可达83.4%,有机氯的总收率可达96.1%。反应结果较单段氧氯化反应工艺显著提升,具有良好的工业应用前景。%For the efficient and eco-friendly preparation of trichloroethylene (TCE) and perchloroethylene (PCE), as well as the application of byproduct HCl,a process composed of a two-stage series reaction was firstly proposed using HCl as the chlorine source. Oxidation of HCl to Cl2 was carried out in the first stage of the process, and the second stage of the process was the oxychlorination of EDC with generated Cl2and unreacted O2 in the first stage to TCE and PCE. These reactions were carried out in series so that the deep oxidation reactions were effectively avoided. In addition, by using the two-stage process, different catalysts and process parameters could be applied in each stage to meet the different reaction needs. The complex Ce-Cu-K/Y catalyst was used in the first stage, and it was applied in the second stage with optimized loading of the active component. The appropriate loadings of K/Cu (mass ratio) and the active component were 0.73 and 45.5%, respectively. Meanwhile, the operation conditions in the second stage of the process were optimized. 83.4% yield of both TCE and PCE, 96.1% yield of organochloride could be obtained at 430°C with 0.5 h−1weight hourly space velocity (WHSV) of EDC, molar ratio of O2 to EDC 1.8, and molar ratio of O2 to EDC 2.4. The results presented an encouraging prospect in industrial application.
    • 徐术; 费兆阳; 陈献; 汤吉海; 崔咪芬; 乔旭
    • 摘要: 以硝酸铈、硝酸镧为前体,用氨水共沉淀法制备了一系列 Ce1-xLaxO2(x≤0.5)催化剂,利用 XRD、N2吸附-脱附、SEM、Raman、H2-TPR 和 OSC 对催化剂的物理化学性质进行了表征,并考察其在甲烷氧氯化反应中的催化性能.结果表明:Ce1-xLaxO2催化剂的氧化还原性质随着镧含量的变化发生显著改变,并且这一性质的变化与反应的转化率及产物分布具有较强的联系.Ce1-xLaxO2表面氧物种的活泼性对催化剂活性影响显著,而体相氧物种容易将生成的甲烷氯化物深度氧化.在Ce1-xLaxO2(x<0.3)催化剂上表面氧物种起主导作用,氯甲烷为主要反应产物,Ce0.8La0.2O2催化剂上氯甲烷选择性最高为52%.在体相氧物种更活泼的Ce0.7La0.3O2和Ce0.5La0.5O2上产物中CO的选择性显著上升,Ce0.5La0.5O2催化剂上CO选择性高达48%.稳定性测试表明Ce0.8La0.2O2催化剂具有良好的稳定性.%A series of Ce1-xLaxO2(x≤0.5) catalysts were prepared by ammoniaco-precipitation method and characterized by XRD,N2 adsorption-desorption,SEM,Raman,H2-TPR and OSC. Then their catalytic performances in CH4 oxy-chlorination to chloromethane were investigated. The results showed that the redox properties of Ce1-xLaxO2 changed significantly with the change of the lanthanum content,and there should be a strong link between this change and the conversion and product distribution. More specificly,the surface oxygen species had a remarkable influence on the activities of the catalysts,while advanced oxidation of the generated methane chloride was easily induced by bulk oxygen species. Chloromethane was the main product over Ce1-xLaxO2(x<0.3) and the highest selectivity of chloromethane (52%) could be obtained over Ce0.8La0.2O2. A significant increase of CO selectivity was found over Ce0.7La0.3O2 and Ce0.5La0.5O2 as they had more active bulk oxygen species, and Ce0.5La0.5O2 showed the highest selectivity of CO (48%). The long-term stability test showed thatCe0.8La0.2O2 catalyst had a good stability.
    • 刘润柱; 张丽芳
    • 摘要: 以间乙基苯酚为原料,在催化剂作用下,用硫酰氯氯化得到4-氯-3-乙基苯酚,再经氯磺酸磺化、盐酸和双氧水氧氯化、稀硝酸硝化制得2,4-二氯-3-乙基-6-硝基苯酚.总收率达到76%以上,产品纯度达到99%以上.该工艺路线已成功实现工业化.
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