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metal5555金虫 (小有名气)
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[求助]
[求助]几小段化工方面的翻译，请求帮助！
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几小段化工方面的翻译，请求帮助！最好是在今天翻译好！谢谢！ I am glad to hear JR is still considering the consultancy which I strongly recommend based on the process highlights they disclosed. regarding JR process brief description i will convey major comments that I hope will help them to recognize they will have a lot of opportunities to improve their process. My comments will be in red in their process descripton plus some major comment I detail now: a.-Reaction is the core step in the process, and reactants additon, temperature reaction control and other key variabes are key to promote the main reactions and diminish side reactions that affect all the process and of course the quality of the end products. b.-Although formals can be managed a little bit in the reactor they have to be eliminated in an additional step assuming how to managed the by products generated in that step that has to be recycled. More commnets in red down in this mail Formaldehyde mixed with acetaldehyde and gradually adding sodium hydroxide as reactor, Reaction is the main step in Pe process and affects everything downstream. Sodium acts as a catalizer and a reactant in the two main reactions, acetaldehyde in most PE processes is the limitant and Fomraldehyde is managed wi th molar excess. This means that it is better to add gradually the acetaldehyde than caustic. The way this must be done and the way reaction temperature mas be controlled i s key to each chemical reaction within the reactor. High impact can be obtained in Mo PE, DiPE, and other byporducts controllig reation variables neutralize the reaction mixture with formic acid Understood removal impurties by distillation, Evaportation and distillation are key to remove impurities and recovered excess formaldehyde fre o f those impurities, otherwise the reaction is dramatical ly affected. after colling and crystallization, Understood The solution concentrated under vacuum to get sodium formate crystallization and low purity penta, In order to obtain high-purity pentaerythritol,dissolved the low purity penta in hot water,after recrystallization, centrifugation, drying to get final product. ; Understood, but in four different technologies I know it is preffered to manage molar ratios in the raction in order to cristallize frist PE and then by fractionated crystallitazion obtain high purity Formate and low grade PE. ; ;The formals test result is 5-6%. JR is wondering whether your technical method is similar with above method or totally different? Conceptually the method is simmilar but the way the process is organized it is not neccesary the same. I forsee important opportunities for tehir process. Will you control the formals to a low spec by adjust the production mehtod? As i explained in the reactor is defined how different reaction including side reatiojs are driven, but formal will be created anyway. In order to remove formals a special treatment must be done adding specific equipments and assumig that the by products from that treatment has to be recycled to the process in order to keep overall yields under control I hope this explanation is enoug for the time being. I they see these answers I am sure they will realize waht I am talking about. In my perspective they a nice opportunity to imporve their process based on my long term expirience. I know trust is a long process in China, but they have to take a decission to start working or just close the option. I have been very open in this mail in order to encourage them to go. [ 来自科研家族 神龙鱼族馆 ] |
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metal5555
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2楼2011-10-31 09:26:12
metal5555
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中间有些单词拼写错误，现在改过来了！ I am glad to hear JR is still considering the consultancy which I strongly recommend based on the process highlights they disclosed. regarding JR process brief description i will convey major comments that I hope will help them to recognize they will have a lot of opportunities to improve their process. My comments will be in red in their process description plus some major comment I detail now: a.-Reaction is the core step in the process, and reactants addition , temperature reaction control and other key varies are key to promote the main reactions and diminish side reactions that affect all the process and of course the quality of the end products. b.-Although formals can be managed a little bit in the reactor they have to be eliminated in an additional step assuming how to managed the by-products generated in that step that has to be recycled. More comments in red down in this mail Formaldehyde mixed with acetaldehyde and gradually adding sodium hydroxide as reactor, Reaction is the main step in Pe process and affects everything downstream. Sodium acts as a catalyzer and a reactant in the two main reactions, acetaldehyde in most PE processes is the limited and formeldehyde is managed with molar excess. This means that it is better to add gradually the acetaldehyde than caustic. The way this must be done and the way reaction temperature must be controlled i s key to each chemical reaction within the reactor. High impact can be obtained in Mo PE, DiPE, and other by-products controlling reaction varies neutralize the reaction mixture with formic acid Understood removal impurities by distillation, Evaportation and distillation are key to remove impurities and recovered excess formaldehyde free of those impurities, otherwise the reaction is dramatically affected. after cooling and crystallization, Understood The solution concentrated under vacuum to get sodium formate crystallization and low purity penta, In order to obtain high-purity pentaerythritol,dissolved the low purity penta in hot water,after recrystallization, centrifugation, drying to get final product. Understood, but in four different technologies I know it is preffered to manage molar ratios in the raction in order to crystallize first PE and then by fractionated crystallitazion obtain high purity Formate and low grade PE. The formals test result is 5-6%. JR is wondering whether your technical method is similar with above method or totally different. Conceptually the method is simmilar but the way the process is organized it is not neccesary the same. I foresee important opportunities for their process. Will you control the formals to a low spec by adjust the production method? As i explained in the reactor is defined how different reaction including side reations are driven, but formal will be created anyway. In order to remove formals a special treatment must be done adding specific equipments and assuming that the by products from that treatment has to be recycled to the process in order to keep overall yields under control I hope this explanation is enough for the time being. I they see these answers I am sure they will realize what I am talking about. In my perspective they a nice opportunity to improve their process based on my long term experience. I know trust is a long process in China, but they have to take a decission to start working or just close the option. I have been very open in this mail in order to encourage them to go. |
3楼2011-10-31 15:20:27
chembibi
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4楼2011-10-31 16:32:47
chembibi
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5楼2011-10-31 16:39:48
metal5555
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6楼2011-10-31 16:43:37
【答案】应助回帖
metal5555(金币+60, 翻译EPI+1): 非常感谢！呵呵！不好意思，分点前面的！ 2011-10-31 16:55:44
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I am glad to hear JR is still considering the consultancy which I strongly recommend based on the process highlights they disclosed. regarding JR process brief description i will convey major comments that I hope will help them to recognize they will have a lot of opportunities to improve their process. My comments will be in red in their process description plus some major comment I detail now: 我很高兴听到关于JR过程仍在考虑我的建议，我强烈建议顾问他们说明反应过程中的要点。 关于JR过程的简要说明，我会把主要的意见表达给他们，希望能够帮助他们认识到，他们有很多的机会去提高反应的过程。下面是我在他们的过程描述加上一些主要的细节评论（用红色标注）： a.-Reaction is the core step in the process, and reactants addition , temperature reaction control and other key varies are key to promote the main reactions and diminish side reactions that affect all the process and of course the quality of the end products. A.反应是反应过程中的核心步骤，反应物加入量，反应温度控制等变量是推进主要反应和减少副反应影响所有进程和最终产品的质量的关键因素。 b.-Although formals can be managed a little bit in the reactor they have to be eliminated in an additional step assuming how to managed the by-products generated in that step that has to be recycled. More commnets in red down in this mail B.，虽然通过一个反应器能够使缩醛减少一点点，假设能够解决如何控制副产物产生在这一步，他们将要淘汰这个额外的步骤。这个步骤用于回收利用缩醛副产物。更多红色标注的评论如下邮件： Formaldehyde mixed with acetaldehyde and gradually adding sodium hydroxide as reactor, Reaction is the main step in Pe process and affects everything downstream. Sodium acts as a catalyzer and a reactant in the two main reactions, acetaldehyde in most PE processes is the limited and Fomraldehyde is managed with molar excess. 甲醛和乙醛混合，逐渐加入氢氧化钠到反应装置， PE过程是反应的主要步骤和影响的接下来的一切反应。 钠在两个主要的反应，既是催化剂又是反应剂，在大多数PE过程中乙醛是定量的以及甲醛是摩尔相对过剩的。 This means that it is better to add gradually the acetaldehyde than caustic. The way this must be done and the way reaction temperature must be controlled i s key to each chemical reaction within the reactor. High impact can be obtained in Mo PE, DiPE, and other byporducts controlling reation varies 这意味着反应过程中最好地逐步加入乙醛。必须采用这种方式以及控制反应温度，这些方式是每个反应器内的化学反应的关键。控制反应变量能够对获得单PE，双PE和其他副产物有重大的影响。 neutralize the reaction mixture with formic acid Understood 反应混合物用甲酸中和 了解 removal impurities by distillation, Evaportation and distillation are key to remove impurities and recovered excess formaldehyde free of those impurities, otherwise the reaction is dramatically affected. after cooling and crystallization, Understood 通过蒸馏去除杂质， 水汽蒸馏去除这些杂质和回收这些杂质中过剩的自由甲醛是关键，否则反应将受到巨大的影响。 之后冷却和结晶， 理解 The solution concentrated under vacuum to get sodium formate crystallization and low purity penta, In order to obtain high-purity pentaerythritol,dissolved the low purity penta in hot water,after recrystallization, centrifugation, drying to get final product. Understood, but in four different technologies I know it is preffered to manage molar ratios in the raction in order to crystallize first PE and then by fractionated crystallitazion obtain high purity Formate and low grade PE. 溶液在真空状态下的浓缩得到甲酸钠结晶和低纯度PE， 为了获得高纯度季戊四醇，热水溶解低纯度PE，后重结晶，离心，干燥得到最终产品。 理解，但在我知道的四个不同的技术中，较受欢迎的是控制反应摩尔比率，来首次结晶PE，然后分部结晶获得高纯度的甲酸盐和低纯度的PE。 The formals test result is 5-6%. JR is wondering whether your technical method is similar with above method or totally different. 缩醛测试结果是5-6％。 JR想知道你的技术方法与上述方法类似还是完全不同？ Conceptually the method is simmilar but the way the process is organized it is not neccesary the same. I foresee important opportunities for their process. 概念上说方法是类似的，但过程的组织方式没有必要的相同。我可以预见他们过程中有重要机会。 Will you control the formals to a low spec by adjust the production method? As i explained in the reactor is defined how different reaction including side reations are driven, but formal will be created anyway. 你通过调整生产方法来控制低浓度的缩醛吗？ 正如我解释的反应机理那样，无论怎么样控制不同反应方式以及副反应，都有缩醛产生。 In order to remove formals a special treatment must be done adding specific equipments and assuming that the by products from that treatment has to be recycled to the process in order to keep overall yields under control I hope this explanation is enough for the time being. I they see these answers I am sure they will realize what I am talking about. In my perspective they a nice opportunity to improve their process based on my long term experience. I know trust is a long process in China, but they have to take a decission to start working or just close the option. I have been very open in this mail in order to encourage them to go. 为了除去缩醛必须进行特殊处理，添加特定的设备。如果副产物在处理过程中能够被回收的话，这样还能够提高整体收益。 我希望目前对此的解释已经足够了。我相信他们看到这些问题的答案，他们会意识到我所谈论的。在我看来，他们一个很好的机会提高他们的过程通过我长期的经验。 我知道信任在中国是一个漫长的过程，但他们采取了讨论开始工作或恰恰是关闭了的这个选择。 我已经在此邮件说的非常开放了，以鼓励他们去做。 |
7楼2011-10-31 16:50:42
metal5555
金虫 (小有名气)
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8楼2011-10-31 16:54:40