【机械类毕业论文中英文对照文献翻译】搅拌设备
收藏
资源目录
编号：77690640
类型：共享资源
大小：17.64KB
格式：RAR
上传时间：2020-05-07
上传人：柒哥
认证信息
个人认证
杨**（实名认证）
湖南
IP属地：湖南
6
积分
- 关 键 词：
-
机械类毕业论文中英文对照文献翻译
机械类
毕业论文
中英文
对照
文献
翻译
搅拌
设备
- 资源描述：
-
【机械类毕业论文中英文对照文献翻译】搅拌设备,机械类毕业论文中英文对照文献翻译,机械类,毕业论文,中英文,对照,文献,翻译,搅拌,设备
- 内容简介：
-
附录1 Mixing equipment in the industrial production of a wide range of applications, especially in the chemical industry, many production are more or less application of mixing operation. A variety of chemical changes in chemical process, is fully mixed in the reaction material premise. For the heating, cooling and liquid extraction with gas absorption physical process,also often used for mixing operation in order to get good results. Mixing equipment is used as reactor application on many occasions. For example,in the three major synthetic materials production, mixing equipment as the reactor accounted for about 90% of the total number of reactor. Other such as dyestuff, medicine, pesticide, paint and other industries, the use of mixing equipment is also very widely. Nonferrous Metallurgy Department of mixing equipment nationwide in non-ferrous metal metallurgy industry to do an investigation and determination of the power, is the result of power consumption of many wet workshop more than 50% is used in mixing operation. The scope of application of mixing equipment is so widely, but also because of the operating conditions (such as temperature,concentration of mixing equipment, the residence time of the controllablerange). To adapt to the diversification of production.The following mixing equipment: 1) the raw materials are mixed evenly; 2)to make the gas well dispersed in the liquid phase; 3) the solid particles(such as catalyst) evenly suspended in liquid phase; 4) the other liquidimmiscible phase homogeneous suspension after fully emulsified; 5)strengthen the same mass transfer (such as absorption); 6) heat transfer enhancement. For the homogeneous reaction, mainly 1, 6) 2). Mixingspeed, uniformity and heat transfer is good or bad, will affect the reaction results. As for the heterogeneous system, it also affects the mass transfer velocity of phase interface and the size of the phase, the situation is more complex. So the mixing conditions change, often very sensitive to affect the product quality and yield, production is very common in this example. Insolution polymerization and bulk polymerization of liquid phase reactiondevice, the main role is: to promote the stirring reactor material flow. The material is uniformly distributed in the reactor, increasing the mass and heat transfer coefficient. In the polymerization process, often with increasing the conversion rate, polymerization liquid viscosity also increased. If the mixing situation is not good, it will cause the drop of the heat transfer coefficient or local overheating, materials and catalysts is unevenly distributed, quality effect of polymerization product, also easily lead to polymer sticking to the wall, so that the polymerization reactionoperation cannot go down well.The interaction between immiscible liquid or liquid and solid, mixing plays a very important role in accelerating reaction. Because the increase of onephase into another phase velocity, the contact surface will be increased,the material with wide speed interaction. In some cases, the mixing is an important factor to create good conditions in the reaction process. For example, the heat transfer effect is strengthening, reduce local overheating, the material and the heating process of coking. Such as high pressure polyethylene production, because the stirring effect, so that thematerial has a certain residence time in the reactor, it is more important that the catalyst are evenly distributed in the reactor, to prevent localviolent polymerization caused by explosion. Therefore, mixing equipmentplays a very important role in industrial production.The stirring device is used in the petrochemical industry productionmaterial mixing, dissolution, heat transfer, preparation of suspensionpolymerization, catalyst preparation, etc. For example, in the oil industry,crude oil and refined xenogeneic mixed adjustment, adding tetraethyl leadin gasoline by mixing additives and raw material or producthomogenization. Production of styrene in chemical production, aniline dyeand paint process, are equipped with various types of mixing equipment.In the oil industry because of the large number of application of catalyst,additive, so the demand for mixing equipment greatly. Because of the complexity of operating conditions, material diversity, the mixing equipment requirements are complex. Such as chemical industry used siliconaluminum reactor, beating tank reactor, barium, phosphorus reactor,alkylation reaction kettle, white mud stirred tanks are equipped withvarious types of mixing equipment. In the paper industry, and its wideapplication in mixing equipment, pulp, alkali recovery process are used inmixing equipment.Mixing equipment has a long history, wide application but for scientific research of mixing operation is not enough. Mixing operation appears to besimple, but in fact, he involved are extremely complex. The stirrer typeselection. From the point of view of process views and mechanics, so farinsufficient study. Along with the progress of the society, the development of science and technology, to improve the mixing equipment and newdesign will be greatly improved. The trend in recent years has a large scale equipment, also requires mixing equipment. As the volume of polymerization kettle abroad has expanded from the initial 840m to 60100m , maximum has reached 200m. The large polymerization kettle can greatly reduce the operating and maintenance personnel, isbeneficial to automation, reduce investment, increase productivity, stable product quality. With a large volume, kettle type gradually developed from elongated to squat type, and the bottom stirring way more and more use. Multipurpose trefoil sweepback agitator, trefoil sweepback agitator is a good mixer current large-scale polymerizer used. Because the discharge amount is large, circular phase reactor liquid full, up to 510 per minute, can promote the reaction kettle uniform. In addition, the practice has proved that this blade must be with the baffle plate, in order to improve the shear stress function, can play a better role.Mixing can also be in the pipeline, the device in the pipeline of gas liquidand liquid - liquid system.附录2搅拌设备在工业生产中应用范围很广，尤其是化学工业中，很多的生产都或多或少地应用着搅拌操作。化学工艺过程的种种化学变化，是以参加反应物质的充分混合为前提的。对于加热、冷却和液体萃取以气体吸收等物理变化过程，也往往要采用搅拌操作才能得到很好的效果。搅拌设备在许多场合是作为反应器来应用的。例如在三大合成材料的生产中，搅拌设备作为反应器约占反应器总数的90%。其他如染料、医药、农药、油漆等行业，搅拌设备的使用亦很广泛。有色冶金部门对全国有色冶金行业中的搅拌设备做了调查及功率测定，结果是许多湿法车间的动力消耗50%以上是用在搅拌作业上。搅拌设备的应用范围之所以这样广泛，还因搅拌设备操作条件（如温度、浓度、停留时间等）的可控范围较广。能适应多样化的生产。搅拌设备的作用如下：1）使物料混合均匀；2）使气体在液相中很好地分散；3）使固体粒子（如催化剂）在液相中均匀地悬浮；4）使不相溶的另一液相均匀悬浮后充分乳化；5）强化相同的传质（如吸收等）；6）强化传热。对于均相反应，主要是1）、6）两点。混合的快慢、均匀程度和传热情况好坏，都会影响反应结果。至于非均相系统，则还影响到相界面的大小和相间的传质速度，情况就更复杂。所以搅拌情况的改变，常常很敏感地影响到产品的质量和产量，生产中的这种例子非常普遍。在溶液聚合和本体聚合的液相反应装置中，搅拌的主要作用是：促进釜内物料流动。使反应器内物料均匀分布，增大传质和传热系数。在聚合反应过程中，往往随着转化率的增加，聚合液的黏度也增加。如果搅拌情况不好，就会造成传热系数下降或局部过热，物料和催化剂分散不均匀，影响聚合产品的质量，也容易导致聚合物粘壁，使聚合反应操作不能很好地进行下去。在互不相溶的液体之间或液体与固体之间相互作用时，搅拌在加速反应的进行方面起着非常重要的作用。因为增加一物相混入另一物相的速度，接触面就会增大，物质就以较大速度相互作用。在某些情况下，搅拌是在反应过程中创造良好条件的一个重要因素。例如，使传热作用加强，减少局部过热，以及加热过程中物质焦化等。如高压聚乙烯生产中，由于搅拌的作用，使物质在反应器内有一定的停留时间，更重要的是使催化剂在器内分布均匀，以防止局部猛烈的聚合作用而造成爆炸。因此搅拌设备在工业生产中起着非常重要的作用。搅拌设备在石油化工生产中被用于物料混合、溶解、传热、制备悬浮物、聚合反应、制备催化剂等。例如石油工业中，异种原油的混合调整和精制，汽油中添加四乙基铅添加物而进行混合使原料液或产品均匀化。化工生产中，制造苯乙烯，苯胺染料和油漆颜料等工艺过程，都装备着各种型式的搅拌设备。在石油工业中因为大量应用催化剂、添加剂，所以对搅拌设备的需要量很大。由于物料操作条件的复杂性、多样性，对搅拌设备的要求也复杂化了。如化工行业用到的硅铝反应器、打浆罐、钡化反应器、硫磷反应釜、烃化反应釜、白泥搅拌槽等都是装有各种不同型式搅拌器的搅拌设备。在造纸行业中，搅拌设备应用及其广泛，在制浆，碱回
- 温馨提示:
1: 本站所有资源如无特殊说明，都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
2: 本站的文档不包含任何第三方提供的附件图纸等，如果需要附件，请联系上传者。文件的所有权益归上传用户所有。
3.本站RAR压缩包中若带图纸，网页内容里面会有图纸预览，若没有图纸预览就没有图纸。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 人人文库网仅提供信息存储空间，仅对用户上传内容的表现方式做保护处理，对用户上传分享的文档内容本身不做任何修改或编辑，并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容，请与我们联系，我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。
人人文库网所有资源均是用户自行上传分享，仅供网友学习交流，未经上传用户书面授权，请勿作他用。
川公网安备: 51019002004831号