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夹带剂

夹带剂的相关文献在1988年到2022年内共计186篇,主要集中在化学工业、中国医学、轻工业、手工业 等领域,其中期刊论文146篇、会议论文19篇、专利文献584791篇;相关期刊104种,包括中成药、化工进展、化学工程等; 相关会议13种,包括第十届全国超临界流体技术学术及应用研讨会暨第三届海峡两岸超临界流体技术研讨会、第九届全国超临界流体技术学术及应用研讨会、第八届全国超临界流体技术学术及应用研讨会暨第一届海峡两岸超临界流体技术研讨会等;夹带剂的相关文献由453位作者贡献,包括张泽廷、金君素、于恩平等。

夹带剂—发文量

期刊论文>

论文:146 占比:0.02%

会议论文>

论文:19 占比:0.00%

专利文献>

论文:584791 占比:99.97%

总计:584956篇

夹带剂—发文趋势图

夹带剂

-研究学者

  • 张泽廷
  • 金君素
  • 于恩平
  • 李颖
  • 李群生
  • 丘泰球
  • 刘璇
  • 蔡建国
  • 邓修
  • 佘志鸿
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 曾群英; 孙启文; 杨春基; 陈谦; 马克存; 李文鹏; 高萌; 孙燕; 陈昂俊
    • 摘要: 高温F-T合成馏分油中直链α-烯烃约占50%~70%,且无S、N等氢甲酰化催化反应毒物.将F-T合成油相应馏分段中的直链α-烯烃经过氢甲酰化反应深度加工,氢甲酰化反应产物中未反应的链烷烃通过加入优选的二甘醇(DEG)中沸点极性夹带剂进行共沸蒸馏与醇/醛进行分离,发现在氢甲酰化产物进料与夹带剂的物质的量比为1:1.5的条件下进行醇/醛分离研究时,塔底醇收率可达到99%.该工艺得到的洗涤剂及表面活性剂醇是市场迫切需求的,既可解决F-T油资源的有效利用问题、也可增加资源的附加值.
    • 熊钰; 莫军; 李佩斯; 蒋军; 张烈辉
    • 摘要: 以离子型碳化物AX CY作为干化主剂注入致密气藏储层中与地层水发生化学反应能够消耗地层水、降低储层含水饱和度,从而提高气体渗流能力.但由于致密气藏储层孔喉较小,固体AX CY颗粒通常难以直接注入其中,因此需要寻找一种有效的干化剂注入方法.通过实验研究发现,超临界二氧化碳(SCCO2)能够溶解少量无机化合物AX CY,且降压后AX CY析出.故可采用SCCO2作为输送剂将AX CY溶解并将其有效带入致密储层孔隙中.以此为基础,本文进一步研究了温度和压力对AX CY在SCCO2中的溶解度的影响;并对多种物质进行测试,优选出了最佳的夹带剂及其用量对AX CY进行增溶.研究结果表明:AX CY可溶解于SCCO2,在8MPA、40°C下的溶解度为0.0005mol·mol;且溶解度随压力的升高而增加,但温度对溶解度的影响随压力的变化呈现出非单一的变化规律;此外,以乙醇作为夹带剂具有明显且优于其他物质的增溶效果,其最佳摩尔浓度为10%.
    • WANG Xiaohong; ZHANG Yuanpeng; YU Xinshuai; XIE Li
    • 摘要: 使用Aspen Plus软件对正丙醇脱水常规双塔共沸精馏流程进行模拟和全局经济优化,在此基础上,进一步提出正丙醇脱水的共沸精馏隔壁塔三塔等价模型分离方案,并对该流程进行模拟和优化.结果表明:共沸精馏隔壁塔工艺过程与常规共沸精馏工艺过程相比,设备费用降低52.52%,年度操作费用节约70.33%,年度总费用降低65.02%.这一研究结果将对化工生产中醇类脱水分离的工业应用具有一定的理论指导意义.
    • 张红梅; 杨再文; 金永强
    • 摘要: 本文采用正交试验方法研究超临界CO2萃取茶花工艺,并分析其萃取物有效成分。考察萃取压力、温度、时间和夹带剂(95%食用乙醇)添加量用量对茶树花萃取物得率的影响。结果表明:压力40 MPa、温度38°C、时间3.5h、夹带剂添加量为干茶花的40%,在此条件下茶花萃取率为3.1%。
    • 华梅; 马惠芬; 陈中华; 原晓龙; 杨卫; 呼延丽; 杨宇明; 王娟
    • 摘要: The way of supercritical CO2 fluid extraction was used in oil peony, and the effects of different con-ditions of different kinds of cosolvents and dosage on the yield of extraction of oil peony were studied. GC-MS tech-nology was used for analysis of fatty acids composition in the oil peony. The result shows that at the extraction condi-tion:35 MPa for pressure, 25 g/min for CO2 flow rate, 2 h for extraction time and 40°C for temperature, the oil yield with shell has been increased 16. 82% after using ethyl acetate as cosolvent. As well the oil yield with shell has been increased 6. 55% after using petroleum ether as cosolvent. And the oil yield with shell has been increased 12. 89% after using n-hexane as cosolvent. As can be seen from the results the oil yields with shell all have im-proved after using of cosolvents, and ethyl acetate has shown the optimum efficiency in oil yields in supercritical CO2 fluid extraction. Comprehensively studied the dosages of 3 cosolvents, the optimal dosage of cosolvents was 10% of CO2 flow rate of ethyl acetate. Peony oil fatty acid composition analysis showed that, oil peony riched in un-saturated fatty acid, especially α-linolenic acid, which take up 78. 95% content of the total fatty acid.%采用超临界CO2流体萃取油用牡丹籽油,用气质联用仪(GC-MS)对牡丹油中脂肪酸成分进行分析,探讨不同夹带剂及用量条件下对油用牡丹籽油脂提取率的影响.结果表明:在压力35 MPa、CO2流量为25 g/min、 时间2 h、 温度40°C的萃取条件下,不同夹带剂使超临界CO2流体萃取油用牡丹带壳油脂提取率均有提高,乙酸乙酯提高了16.72%,石油醚提高了6.52%,正己烷提高了12.85%;综合考察3种夹带剂及其用量,乙酸乙酯的提高效果最好,其最佳用量为10%;牡丹油脂肪酸成分分析结果显示,牡丹油不饱和脂肪酸含量丰富,尤以α-亚麻酸的含量最高,占总脂肪酸含量的78.95%.
    • 刘雯; 李素娟; 马丹凤
    • 摘要: 目的 探讨夹带剂在超临界二氧化碳CO2中萃取银杏叶总黄酮醇苷的工艺条件.方法 以夹带剂加入方式、夹带剂种类、夹带剂加入量及夹带剂流速为考察因素,总黄酮醇苷的提取率作为考察指标,用L9(34)正交表优化工艺条件,高效液相色谱法测定总黄酮醇苷含量.结果 夹带方式选择预浸+动态萃取模式,以95%乙醇作为夹带剂,加入量300ml,加入流速10 ml/min.在上述条件进行超临界萃取时,总黄酮苷醇提取率可达5.03%:萃取压力20MPa,萃取温度60°C,出口温度70°C,用95%乙醇液态收集萃取物,动态萃取时间1h.结论 该实验优选的工艺明显提高超临界CO2萃取银杏叶中总黄酮醇苷的提取效率.%Objective To research the process condition of entrainer in extracting total favonol glycosides from Ginkgo leaves by supercritical CO2.Methods The optimum extraction technology condition was investigated by orthogonal experiment [L9(34)] with extraction rate of total favonol glycosides as the evaluation index,and with the addition way,kind,amount and flow rate of entrainer as investigation factors.The content of total favonol glycosides was determined by high performance liquid chromatography (HPLC).Results The adding way of entrainer is the presoak treatment plus dynamic extraction type,the entrainer was 95% alcohol,with 300 ml infusing volume and 10 ml/min flowing rate.The best factors of supercritical fluid extraction were as follows:extraction pressure 20 MPa,extraction temperature 60°C,outlet temperature 70°C,collecting extracts with 95% alcohol,dynamic extraction time 1 h.Under the processing conditions,the extraction rate of total favonol glycosides was 5.03%.Conclusions Supercritical CO2 extraction with the optimized process significantly improves the extraction of total flavonol glycosides from Ginkgo leaves.
    • 王林凤
    • 摘要: 目的::研究夹带剂对超临界CO2萃取黄芪中黄芪甲苷的影响。方法:以夹带剂加入方式、夹带剂种类、夹带剂加入量及夹带剂流速为考察因素,黄芪甲苷的提取率作为考察指标,用L9(34)正交表优化工艺条件,并用高效液相色谱法对黄芪甲苷进行含量测定。结果:夹带方式选择预浸+动态萃取模式,以95%乙醇作为夹带剂,加入量为300 ml,加入流速10 ml· min-1;在以下条件进行超临界萃取时,黄芪甲苷提取率可达到0.0407%:萃取温度45°C,出口温度55°C,萃取压力35 MPa,95%乙醇液态收集萃取物,动态萃取时间2 h。结论:本实验优选的工艺对超临界CO2萃取黄芪中黄芪甲苷的提取有着明显提高。%Objective:To research the effects of entrainer on extracting astragaloside from astragalus by supercritical CO2 . Meth-ods:The optimum extraction technology conditions were investigated by an L9 (34 ) orthogonal experiment with the extraction rate of as-tragaloside as the evaluation index and the addition way, variety, amount and flow rate of the entrainers as the investigation factors. The content of astragaloside was determined by HPLC. Results:The addition way of entrainer was the presoak treatment combined with the dynamic extraction mode, and the entrainer was 95 % alcohol with 300 ml of infusing volume and 10 ml·min-1 flowing volume. The best factors of supercritical fluid extraction were as follows:the extraction pressure was 35 MPa, the extraction temperature was 45°C, the outlet temperature was 55°C, the extracts were collected with 95% alcohol, and dynamic extraction time was 2 h. Under the above process conditions, the extraction rate of astragaloside was 0. 040 7%. Conclusion:The extraction of astragaloside from astragalus by supercritical CO2 extraction with the optimized process is significantly improved.
    • 李玉邯; 陈宇飞; 杨柳; 张一
    • 摘要: Chosen ethyl acetate as an entrainer,the optimum process conditions of ultrasonic pretreatment of Perilla seed were determined by orthogonal experiment. Then,the optimum process conditions of ultrasonic assisted supercritical carbon dioxide were determined by orthogonal experiment. The optimal extraction conditions were as follows:ultrasonic time of 25 min,ultrasonic temperature of 40 °C,the ultrasonic of 2 times,extraction temperature of 40 oC,the extraction time of 3 h,extraction pressure of 20 Pa,and raw material granularity of 40 mesh. Under the experimental conditions,Perilla seed oil yield efficiency could reach 43.8%. Under the condition of the same material without ultrasonic pretreatment of Perilla seed,the yield efficiency was 39.7%. Ultrasonic for pretreatment of raw materials was conducive to improve the Perilla seed oil yield efficiency.%选择乙酸乙酯为夹带剂,通过正交试验确定超声辅助超临界二氧化碳萃取紫苏籽油的最佳工艺条件。最佳工艺为超声时间25 min、超声水浴温度40°C、超声次数2次、萃取温度40°C、萃取时间3 h、萃取压力20 Pa,原料粒度40目。在此试验条件下,紫苏籽的出油率可达43.8%,相同条件下原料不进行超声预处理的紫苏籽出油率为39.7%,超声对原料进行预处理有利于提高紫苏籽油的出油率。
    • 苏照莹
    • 摘要: 超临界流体萃取技术(supercritical fluid extraction,SFE)利用临界压力和临界温度以上流体借助特异增加的溶解能力而发展起来的一种化工分离技术。经济的发展、人民生活水平的提高使得健康问题备受重视,人们对天然“绿色食品”和天然产物的需求也日益增加。目前常用的分离方法很多,由于SFE具有工艺简单、低温操作、无残留溶剂等优势而得到了广泛重视和应用。现已成为一种常用的分离方法广泛用于生物技术产物分离阶段中的各个领域。
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