| 1. | Analysis of an auto - refrigerating cascade system utilizing a rectifying column
170混合物作为复叠式制冷系统低温环路制冷剂的性能 |
| 2. | Environment - friendly non - azeotropic refrigerant mixture ( narm ) is used as working fluid . the rectifying column is employed to separate high boiling component , low boiling component and lubricant
本文的循环采用环保型非共沸混合工质作制冷剂，利用精馏装置分离高沸点、润滑油与低沸点组分。 |
| 3. | The research and development history in the field of auto cascade refrigeration cycle is reviewed . contrast to some traditional cascaded cycles and acrs , a new acr that employs a rectifying column is proposed
在比较经典复叠循环和前人所研究的自动复叠制冷循环的基础上，提出了具有精馏装置的新型自动复叠式制冷循环。 |
| 4. | A piece of advice to purify dopants using molecular distillation technique is presented . according to our practical situation , mma was purified by two - stage rectification with loading materials added to rectifying column
根据研究结果以及经费和设备的情况，制定本实验mma的精制方法? ?填料塔两级精馏，在原有空塔的基础上添加填料，并进行两级精馏。 |
| 5. | A rig was designed on the basis of thermodynamic analysis . some factors , including mixture composition , cycle compression ratio and suction ratio of circumfluence fluid of the rectifying column , are analyzed of their impacts on coefficient of performance
在对新循环进行了热力学分析的基础上，设计了自动复叠制冷循环实验台，分析了循环工质配比、循环压比及精馏柱回流液的抽取率对循环系统cop的影响。 |
| 6. | In this paper , based on research the application of cimcs in enterprise , it is introduced that the application of technology in ypc refine ltd . corp . and oriental chemical corp , and aimed at the rectified column of ethylene in ypc refine ltd , doing the research of the application of predictive control in practice
本文在研究了计算机管控一体化在企业中的应用的基础上，介绍了该技术在扬子石化实时信息系统和东方化工有限公司管控系统中实现的；并针对扬子石化的乙烯精馏塔对象，对预测控制技术在实际中的应用，进行了仿真研究。 |
| 7. | According to a series of experimental data , the effect of following factors on the temperature in the ultra - low temperature box and cop are analyzed : the mixture composition , the pressure ratio and the return fluid extraction ratio of the rectifying column , the refrigeration capacity and the flow rate through throttle valve
并根据一系列实验结果，分析了工质配比、循环压比及精馏柱回流液的抽取率、加热量和节流元件对低温箱内温度和系统cop的影响，为今后的进一步研究指明了方向。 |
| 8. | An experimental apparatus has been set up and experiments have been carried out successfully . it is the first time to use a kind of environment - friendly refrigerant , a rectifying column and an air - conditioning compressor in the ultra - low temperature refrigeration cycle . high boiling component , low boiling component and lubricant can be separated effectively
本文自制了一台自动复叠制冷循环样机，采用环保型制冷工质、精馏装置和单级油润滑空调压缩机，实现了混合工质高低沸点组元和润滑油的高效分离，成功地把低温箱内的温度降到- 80 。 |
| 9. | Secondly , in the fifth chapter , it introduces cimcs apply in oilcan control system in yangzi petro corp , and control system in nanjing oriental chemical technology . in the sixth chapter , it introduces the predictive control arithmetic based on rbf neural network and bp neural network , applying in the rectified column of ethylene , and the result is offered
在第五章里主要研究了计算机管控一体化技术在扬子石化实时信息系统和东方化工有限公司管控系统的应用和相关软件的开发；在第六章里针对乙烯精馏塔塔顶和塔底产品成分的预测控制，研究比较了基于径向基神经网络和bp改进算法的预测控制算法，并给出了相应的结果。 |
