工艺过程

Based on the investigation of the transesterification between dimethyl sebacate and 1,2,2,6,6-pentamethyl-4-piperinol, the synthetic technologies of Tinuvin292 and Tinuvin 765 were established. The two kinds of hindered amine light stabilizers were obtained in the yield of 93.3% and 92.4% respectively and qualified as the advanced level of the kindred overseas products.2. The synthetic technology of Tinuvin123 was studied and established. Using 2,2,6,6-tetramethyl-4-piperinol as the starting material, the product was synthesized successfully through oxidation, free-radical reaction and transesterification in overall yield of 57.6%.

本文研究建立了三个受阻胺类光稳定剂的合成工艺，探索了聚合型受阻胺类光稳定剂生产过程中不溶性副产物产生的原因，并设计、合成了一系列具有抑菌活性的新型受阻胺类光稳定剂。1、在研究癸二酸二甲酯与1，2，2，6，6-五甲基哌啶醇的酯交换反应的基础上，建立了受阻胺类光稳定剂Tinuvin292、Tinuvin765的合成工艺，分别以93.3%和92.4%的收率得到了光稳定剂Tinuvin292、Tinuvin765，所得产品质量达到了国外同类产品的水平。2、研究建立了受阻胺类光稳定剂Tinuvin123的合成工艺。

The synthetic technologies of three hindered amine light stabilizers were established, the reason for the insoluble side products formed in the production of polymerized hindered amine light stabilizers were studied, and a series of novel hindered amine light stabilizers with antibacterial properties were designed and synthesized in this present paper.1. Based on the investigation of the transesterification between dimethyl sebacate and 1,2,2,6,6-pentamethyl-4-piperinol, the synthetic technologies of Tinuvin292 and Tinuvin 765 were established. The two kinds of hindered amine light stabilizers were obtained in the yield of 93.3% and 92.4% respectively and qualified as the advanced level of the kindred overseas products.2. The synthetic technology of Tinuvin123 was studied and established.

本文研究建立了三个受阻胺类光稳定剂的合成工艺，探索了聚合型受阻胺类光稳定剂生产过程中不溶性副产物产生的原因，并设计、合成了一系列具有抑菌活性的新型受阻胺类光稳定剂。1、在研究癸二酸二甲酯与1，2，2，6，6-五甲基哌啶醇的酯交换反应的基础上，建立了受阻胺类光稳定剂Tinuvin292、Tinuvin765的合成工艺，分别以93.3%和92.4%的收率得到了光稳定剂Tinuvin292、Tinuvin765，所得产品质量达到了国外同类产品的水平。2、研究建立了受阻胺类光稳定剂Tinuvin123的合成工艺。

With master degree in Finance,those with Bachelor Degree but with ACCA or other professional qualifications may also apply;graduates from overseas universities will be an advantage;teaching and working experience of 3 years or above;fluent in English, both spoken and written;good interpersonal skil...

1。参与制订公司年度总计划和季度、月度生产计划的制定。2。组织实施并监督、检查生产过程中质量体系的运行。3。审阅生产系统及与其相关的文件，在权限范围内签发文件。4。组织新技术、新工艺、新设备的应用推广，持续优化改善工艺方案，提高整体的工艺水平，不断提高产能和质量。5。指导、监督、检查所属下级的各项工作，掌握。。。

The experiment products met the specification of HG2340-92 in terms of its first class tribasic lead sulfate.The optimum leaching process parameters were as follows:NaCl concentration 5.5mol/L,leaching temperature 100℃,leaching time 120min,CaCl_2 con...

采用此工艺在实验室制得符合HG2340-92标准一级品要求的产品，并确定浸出过程的最佳工艺参数是：NaCl溶液浓度≥5.5mol/L，浸出温度≥100℃，浸出时间120min，CaCl2浓度0.3mol/L，HCl浓度0.15mol/L，液固比8∶1；合成三盐基硫酸铅的最佳工艺条件为：PbSO4∶NaOH=4∶6，液固比≈2∶1，室温反应时间60min，溶液的终点pH8.4~8.8。

The reason is that in the whole energy conversion process, the unput of energy consists of net only the feed coal, but also the fuel coal to produce stam and the electric power to drive the air blowe and t...

因此 ，为了能更科学、合理地反映该工艺的煤炭利用效率，本文建议采用针对整个气化工艺系统的气化过程总效率作为评价指标。同时，利用新、老指标对该工艺进行了初步的分析和评价。

The original control system can not solve the contradiction between the time needed to raise the temperature and the process temperature overshooting, and need a very long time to reach a stable running.

工艺温度是膨胀烟丝生产过程中的一个重要工艺指标，它直接影响着膨胀烟丝的品质，因此对工艺温度的控制质量研究具有重要的现实意义。

After analyzing a large number of typical deep-drawing process design plans, process design knowledge of deep-drawing process is summarized.

在分析了大量的典型拉深件成形工艺方案的基础上总结了拉深件工艺设计知识，并将它们按照冲压件工艺设计过程进行模决化组织。

At present, in the production craft of construction ceramics, generally has used the more advanced tunnel kiln to fire the craft, carries on in the process in the use tunnel kiln which fires, fixed time and fixed point completes goes against the vehicle work is the guarantee fires one of quality important methods, this article carries on the discussion on the entire tunnel crown vehicle craft PLC control.

摘 要：目前，在建筑陶瓷生产工艺中，已普遍采用了较为先进的隧道窑烧成工艺，在使用隧道窑进行烧成的过程中，定时、定点地完成顶车工作是保证烧成质量的重要手段之一，本文就整个隧道窑顶车工艺的PLC控制进行探讨。

This paper introduced the fruit vinegar production technology by fermentation using the crushed big Chinese date and other starch materials.

该文介绍了将大枣粉碎后直接与其它淀粉原料进行复合发酵的果醋生产工艺，确定了复合发酵过程的工艺条件及调配、过滤澄清等工艺规程，生产出风味独特的大枣熏醋。

In this design process, through produce to carry out the material balance and the energy graduated, to find out the mainly production equipment and the storage tank's size, to select other equipments' standard model and write out the complete production technics argument, at the same time, this design will show you the equipment drawing and layout chart, in this way to complete the requirements of the subject.

设计过程中，通过生产量进行物料和能量的衡算，确定主要的生产设备和贮水罐规格、选择其他设备的标准型号和写出完整的工艺论证并画出所设计的设备图、布局图，从而完成课题要求的工艺设计。关键词：水质标准，注射用水，蒸馏，多效蒸馏水机，生产工艺

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。