运行

This means that modeling can be realizably applied to make the optimal operation schemes regardless of pilot-scale and/or full-scale experiments.

这表明，在很大程度上数学模拟技术可以替代中间或现场试验，从而被用来诊断运行问题、并制定工艺运行优化策略。

A Corner-tangential-boiler of 410t/h in Guohua Beijing thermal powerplant was studied in the thesis. Firstly, optimizing operation was carried on boiler for de-NOx emission; secondly, numerical simulation was made by Fluent software, the calculation results were consistent with experiments. The retrofit scheme of reburn was put out which ascended the upper primary wind.

本论文以国华北京热电分公司410t／h四角切圆燃煤锅炉为研究对象，首先进行了锅炉低NOx优化运行的试验研究；并通过Fluent数值模拟对其进行了深入的研究，计算结果与实际情况吻合较好，同时提出将上一次风上移作为再燃的改造方案，并对改造后的情况进行模拟预测，得到改造后工况运行优于现行工况。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

Then,the detailed layout calculation and revampment programs on the distribution of aeration orifice were p...

改造后装置的运行结果表明，装置的催化剂循环管线流化稳定，催化剂密度和滑阀压降分布合理，反应温度的波动范围可控制在±1.5℃，解决了装置催化剂流化异常问题，提高了装置的生产运行水平。

In X, Y coordinates, conventional pneumatic switching valves combined with rodless cylinder and positional controller can achieve precise location of positioning in arbitrary itinerary (positioning accuracy achieved±0.5mm).

气动机械手的控制系统，由PLC和PC机两部分组成。PLC作为下位机，实现对气动机械手各电磁阀和专用位置控制器的直接控制以及运行位置的信息反馈等； PC机作为上位机，实现对PLC控制命令的发送和整个机械手运行状态的监控。

Heating furnace of steel of Lai steel tape transforms nearly 6 years to come through type of accumulation of heat, in producing a course, because a variety of caustic medium such as SO2, H2S are contained inside flue gas conduit, after moving for a long time, conduit wall is rustily below these medium chemistry serious, cause conduit average ply is not worth 1mm, and occurrence bedding face of conduit of local flue gas accumulates rubiginous sodden phenomenon, air leak is serious, increased many and gas use up, and move to heating furnace safety cause menace.

莱钢窄带钢加热炉经过蓄热式改造近6年来，在生产过程中，由于烟气管道内含有SO2、H2S等多种腐蚀性介质，长期运行后，管道内壁在这些介质化学功能下锈蚀严重，造成管道平均厚度不足1mm，而且局部烟气管道出现大面积锈烂现象，漏风严重，增加了大量煤气消耗，且对加热炉平安运行造成威胁。

To best utilize processor time, assuming there are runnable processes, a process should always be running.

最大限度的优化处理器时间原则是：如果有运行态的程序，进程将一直可运行。

If there are more runnable processes than processors in a system, some processes will not be running at a given moment.

如果在系统里很多运行态的进程超过处理器个数，有些进程在一个给定的片刻将不会运行。

If there are more runnable processes than processors in a system, some processes will not be running at a given moment.

如果在体系里很多运行态的进程超过处理器个数，有些进程在一个给定的半晌将不会运行。

When a blocked thread becomes runnable,it is placed back into the appropriate runnable pool.

一旦被堵塞的线程进入可运行状态，它将会被放回适当的可运行池中。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。