| Distribution control system has developed for ten years, and appliedevery trade and industry. But chemical industry is special, it is important tochoose and apply distribution control system. This article analyzed andresearched application of distribution control system in the JiLin chemicalfiber acrylic fiber process. I hope that acrylic fiber company can produce inthe safety mode and apply flexible this distribution control system, and realizeenterprise development very much.At present because all enterprises deveqlop no balance, they all try theirbest to arise their lever developing. All enterprises capacity of produce andmarket situation as follows: Xuhua of Japan is 60kt/y, Taiwan of China is100kt/y, Taiguang of Korea is 75kt/h. Acrylic fiber of import price reducefrom 1700dollars per ton to 1850dollar per ton in 1996 to 1320dollar per tonat present. We can look at there is a big diffrence in the cost and capacity ofproduce, the main reasons is technoleg,equipments;of course including leverof management and so on, make them have a big difference. Acrylic fiberprice have no advantagment about price. How to arise capacity of produce andarise quality of produce, and improve benefit of enterprise, then enterpriseneed choose suitable control system and management system. But the systemshould have management function except there is control function. Of coursecontrol system should have well quality of hardware and well software, forexample AMS and PRM. At the same time, market situation of layout is thereason of control system investment. But the price of system is the bestimportant reason to choose. With the extended of application area, priceshould be high, but in some area of petroleum chemical control system price isreducing. In the past time, government trade have a good lever of rising, butfor petroleum,chemical and so on, they only keep up stable. But market ofelectric area had become smaller than past, distribution control system hasstarted coming dowm.In 1998, CENTUM CS had been applied in JiLin chemical fiber groupcom. Limt, field control system link between CENTUM CS and CENTUMXL. At that time, there are two systems which they can choose, HoneywellTPS system and Yokogawa CENTUM CS, after considering, at last theychoose the CENTUM CS system. Because at that time they considered systemshould stable running and need not open net. CENTUM CS is a stable systemvery much, it has a special net, and it is difficult to be disturbed, and at sametime operation station adopted to UNIX system, it is stable too. CPU isredundancy CPU that can guarantee that it can not affect on plant runningwhen the power shut down. But this time, Jilin choosed TPS system afterconsidering safety and stable running and net opening.With the development of distribution control system, at the same timewith requirement of whole earth economic, all enterprises choose distributioncontrol system not only considering control function but alse consideringmanagement. Now distribution control system use embed language, forexample ORANCLE,SYBASE,SQL and so on to realize fountion. Processdata and relative to data of some equipments were collected through OPCserver, and change over data through server and distribution contol system. Atpresent, distribution control system bus technic is HART and field bus. Dataof field equipments were collected by card or termination trip to instrumentmanagement server and manage those instrument through server. But if wewant to manage all instrument in the field, it is not enough only depending onOPC, should be have monitor software, Jilin chemical fiber used IFIXsoftware in the past time. But now it is not necessary. For distribution controlsystem, the vendor must know market of domestic and aboard country, inorder to adjust automatic technic to adapted to enterprise requireddevelopment. For instance, Honeywell and Yokogawa system mainly adoptsto petroleum and chemical trade, ratio of market is higher than othersmanufacturer, because they know the trade, there is control system to suit forapplying in the area.In a word, distribution control system can get effective use, that willimprove acrylic fiber trade developing, of course, this is question and waitingfor emergency to be solved by acrylic fiber trade and automatic trade.There are fourth chapter in the article.In the first chapter, with the development situation, as well at presentapplication of distribution control system, I put forward to article significationof research.In the second chapter, I have introduced relative contents according todistribution control system. If enterprise wants to choose suitable distributioncontrol system, at the first, they need have knowledge for distributing controlsystem. They should know development history and market. Then I clarifiedframework of distribution control system. At last I clarified use rules andcondition of distribution control system.In the third chapter, I analyzed and researched in detail application ofJilin chemical fiber process. Its process is continues process, there is a largescope, distribution control system had applied very well in the controlprocessing. It is only controller in 1998, only use to control and monitorequipments on site. But this system did not consider too much information ofnetwork management. In this chapter, through investigating, I have knownvery well the control mode of JiLin chemical acrylic fiber process, and atsame times through analyzing I have known all the control function fiberprocess of distribution control system. Of course I have known at that timethis system can realize some simple function of management, for exampleprint, and recorder and so on, to realize relative data transfer to managementsystem in order to develop production.In the fourth chapter, according to contents of the third chapter, I putforward to some suggestions about how to choose distribution control systemin the future, at the same time, I give some development direction ofdistribution control system depend on required for economic developingenvironment and enterprise of acrylic fiber developing. At last, I bringforward my opinion about how to choose satisfied distribution control systemfor new preparing to construct acrylic fiber plant.
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