共查询到20条相似文献,搜索用时 125 毫秒
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本文较为详细地介绍了我公司二分厂造气车间煤气流程、微机系统、蒸汽系统、吹风气回收系统和油路系统的改造情况及运行效果。 相似文献
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针对原料药生产中的乙二醇冷热媒系统,介绍了单一流系统集中供冷热媒的特点,比较了一次通过式和循环式两种换热流程,分别对流程控制和设备选型要点进行了比较.结果表明,循环式加热流程的投资较小,且更加适用于间歇操作的原料药生产装置. 相似文献
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几种典型水泥粉磨系统的比较 总被引:1,自引:0,他引:1
水泥粉磨系统已由早先的球磨机系统逐步发展到现在的球磨机+辊压机系统和立磨系统。通过分析流程和主要配置及运行参数,归类出比较典型的七种水泥粉磨系统的技术性能持点。其中,立磨终粉磨系统流程最简单,能耗最低,是水泥粉磨方案的首选;辊压机+球磨(带涡流选粉机)组成的联合粉磨系统及立磨和球磨组成的联合粉磨系统流程相近,能耗相近,可作为水泥粉磨系统的优选方案;辊压机和球磨机组成的开流及半开流系统缺点最多,应尽量避免选用。 相似文献
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针对经营分析系统中调度流程挂起后需人工处理和耗时耗力的问题,提出一种基于经营分析系统的调度流程挂起自处理方法。该方法模拟专家系统,将流程挂起的原因与处理方法总结存入一张表中,并配置监控进程,当监控到有挂起的流程时,根据错误标志,自动匹配处理方法,实现调度流程挂起自处理的目的,节省了大量人力、物力和时间。 相似文献
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论述了老屋基选煤厂煤泥水处理系统多次改造和运行的实际效果 ;提出了要想避免系统内细泥循环积聚 ,达到实现洗水闭路循环的目标 ,就要确定合理的煤泥水流程 ,使之尽量简化 ,同时要避免流程中煤泥的局部循环 ,而且要兼顾原有工艺系统和设备的实际处理能力 ,在选煤厂的技术改造中 ,应充分利用原有设备、设施 ,合理地调整煤泥水工艺流程。 相似文献
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论述了造气系统固定层煤气发生炉的煤气流程、蒸汽流程、空气流程、吹风气潜热回收流程在中、小型氮肥企业技术改造的进展情况;针对各流程的利弊关系,提出了造气系统进行技术改造或新建时流程的选择要点和相关注意事项. 相似文献
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陈超 《煤炭加工与综合利用》2023,(12):73-76
煤炭采制样装备的智能化发展是煤炭工业数字化进程的时代要求,在大数据和人工智能等技术日趋成熟的当下,采样、制样在线控制技术已成为煤质检验领域发展的重要方向。从机械系统、电器系统、智能集样系统与远程操控、智能启停、在线制样、自动收集、煤样全流程感知等方面介绍了流程式煤炭智能采制样系统及其工作流程,分析了智能采制样系统相比传统机械化设备的性能优势,阐述了流程式煤炭智能采制样系统的应用。结合流程式煤炭智能采制样系统在应用中存在的问题,剖析了原因,给出了解决方案。 相似文献
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Ji Hwan Jeong 《Korean Journal of Chemical Engineering》2001,18(6):824-830
There are many industrial machines that function by operation of multi-phase fluids. Some of them take advantage of the characteristics
of counter-current two-phase flow. The maximum flow rates of gas and liquid phases which flow in opposite-directions (counter-current
flow) are limited by a phenomenon known as a Counter-Current Flow Limitation (CCFL or flooding). The mass and momentum conservation
equations for two phases were established to build a system of first-order partial derivative equations (PDE). A new CCFL
model was developed based on the characteristic equation of the first-order PDE system. The present model applies to the case
in which a non-uniform flow is developed around a square or sharp-edged entrance of liquid phase. The model can be used to
predict the operating-limit of components in which mass and heat transfer are taking place between liquid and gas phases. 相似文献
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R.MacKay David 《臭氧:科学与工程》1985,7(1):77-84
A fully automated system is controlling a two-stage ozonation system treating 140 × 103 m3/h (6.4 mgd) of potable water in a full-scale water treatment plant. A supervisory computer has a data communications path to each of six ozone generators and a direct link to the ozone destruct system. Total ozone requirement is calculated, the most power-efficient equipment configuration is selectedt and the flow of ozone to each contactor is controlled. Inaddition, graphic display ofequipment status and process variables is provided system events are logged, and strip charts and reports are produced. 相似文献
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设计了年产20kt聚丙烯造粒装置上游配料及计量加料系统、PID控制方案以及关键设备的选型. 相似文献
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云浮硫铁矿工程设计中对主要方案的比选采用系统工程中的线性规划、层次分析等方法进行系统分析、系统优化,取得好的效果。结合固定破碎站位置的优化选择、矿石外运方案、原矿运输方案和泥石流综合治理等问题作了阐述。 相似文献
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This work is based on the hybrid system emulator plant developed by the Thermochemical Power Group (TPG) of the University of Genoa. This rig is composed of a 100 kW microturbine coupled with high temperature fuel cell emulation devices. A real‐time model is used for components not physically present in the laboratory (solid oxide fuel cell (SOFC), reformer, anodic circuit, off‐gas burner, cathode blower). It is necessary to evaluate thermodynamic and electrochemical performance related to SOFC systems. Using an User Datagram Protocol (UDP) based connection with the control/acquisition software, it generates a hardware‐in‐the‐loop (HIL) facility for hybrid system emulation. Temperature, pressure, and mass flow rate at the recuperator outlet and machine rotational speed are measured in the plant and used as inputs for the model. The turbine outlet temperature (TOT) calculated by the model is fed into the machine control system and the turbine electric load is changed to match the model TOT values (effective plant/model coupling to avoid modifications on microturbine controller). Different tests were carried out to analyze hybrid system technology through the interaction between an experimental plant and a real‐time model. Double step and double ramp tests of current and fuel provided the system dynamic response. 相似文献