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1)  control based on specification of stripping section
按提馏段指标控制上
2)  calculated-based control
按计算指标控制
3)  quality control by attributes
按固定指标控制
4)  stripping section
提馏段
1.
The packing in stripping section was replaced by packing-functional SUPER Ⅵ floating valve trays, and the original trays in 2nd, 3rd and 4nd side cuts were also replaced by SUPER Ⅵ trays.
中国石化股份公司洛阳分公司针对常压塔填料段超负荷易冲塔和塔底重油中350℃前馏分含量高的问题对其塔盘进行了改造,将提馏段中填料拆除,改造为具有填料化概念的SUPERV1浮阀塔盘,并将常二线、常三线、常四线抽出塔盘也改为SUPER V1塔盘,优化常压塔操作工况,使全塔压降降低0。
2.
Results of revamping for stripping section of crude tower in Binzhou petroleum chemical factory indicated that NS tray has higher throughput and stripping efficiency.
该塔板在滨化集团化工厂原油常压塔提馏段中的应用表明 ,使用该塔板能够提高处理能力 ,有效降低塔底残液中轻组分的含量 ,减少蒸汽或再沸汽用量 ,降低能
3.
The system can adjust the PID parameters of the master controller and use feed-forward compensation controller to overcome the uncontrollable turbulence according to the change of operating modes of stripping section.
针对精馏过程内部机理复杂、参数动态变化情况,提出一种基于前馈补偿和模糊PID的提馏段温度串级控制系统,根据提馏段工况的改变,自适应调整主控制器PID参数,同时引入前馈控制,克服系统不可控扰动。
5)  control target
控制指标
1.
The control target of settlement according to.
本文预测新建线施工引起的既有车站结构的沉降曲线、评估新建施工引起的既有车站沉降变形对其现状结构的影响,同时根据行车安全的要求,综合各种影响因素,提出新建线施工时既有车站结构的沉降控制指标。
2.
But basic parameter and target of EVC need to be better,in the text,ACWP is partly improved,control target is developed,influence on wastage and price of material for engineering project cost is showed exactly,which made foundation for value and control the whole construction correctly.
但目前赢得值原理中的基本参数和指标还需进一步完善,文章将ACWP参数做了部分改进,对控制指标进行了拓展,将材料的消耗量与材料价格对工程项目费用的影响更确切地表现出来,为针对施工各阶段情况做出准确评估和控制打下基础。
3.
After comparing experimented research with theoretical research and considering overseas pavement structure design method,proposal is made that the deflection should not be used any more as the design control target in the structural design of the bituminous pavement with flexible base,simultaneously put forward several proposals to this road structural design.
通过试验数据和理论两方面对比研究,并结合国外的路面结构设计方法,提出具有柔性基层的沥青路面结构设计不应以弯沉作为主要的设计控制指标,同时对该路面的结构设计提出了几点建议。
6)  control index
控制指标
1.
In this paper, the current research situation of the problems related to eco-environmental control index ofgroundwater had been expoundedsynthetically.
本文综合论述了国内外对地下水生态环境控制指标问题研究的现状,并从地下水系统与地表生态环境系统的相互作用的角度,阐述了地下水对地表覆被、农作物生长、土壤盐渍化等三方面的影响,给出了一些典型地区合理的地下水生态环境指标。
2.
Based on the five sensitive experiment study, the injected water source of He 86 biolithite reservoir is assessed by means of scaling tendency calculation and lab flow test; injected water quality control index is studied by means of membrane filtration test, core jam test and bacterial plugging test.
在五敏实验研究的基础上,通过结垢趋势计算、室内流动实验对河86生物灰岩油藏注水水源进行了系统评价;通过膜滤实验、岩心堵塞实验、细菌堵塞实验等对注水水质控制指标进行了研究。
补充资料:按提馏段指标控制上
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性质:对塔底产品的纯度要求较塔顶产品为高时,或塔顶和精馏段塔板的温度不能很好反映产品成分时,或进料全部为液相时,采用按提馏段的指标进行控制。按提馏段指标进行控制,再沸器加热量或塔产品流量用作控制品质量的操作变量,回流量保持一定,且有一定富裕。

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