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    1756-EWEB
    发布者:fzjfx0001  发布时间:2019-08-16 20:24:15  访问次数:

    1756-EWEB现货 in stock! 欢迎来电咨询~!!

    1756-EWEB


    一、系统描述
      醋酸乙烯是一种十分重要的工业原料,其市场非常广阔.它的生产过程主要分为两个大的过程: 合成和精馏.前者是发生化学反映生成醋酸乙烯的过程, 后者则是将生成的醋酸乙烯通过学,物理过程来进行提纯.其工艺流程图如下:
     2、本工艺的特点和难点
      醋酸乙烯的生产是个塔体非常多的系统,调节回路众多,系统的关联性非常强,一个参数的控制的好坏直接影响到其他参数的控制的成败.一个系统的波动可能带垮整个系统.,因为其产品醋酸乙烯的浓度要求非常高,达到99.9%以上,因此对反应温度,以及流量等参数的控制要求非常平稳,合成反应器的中温要求170正负0.5度,醋酸蒸发器液位要求达到正负1%,还有乙炔的流量非常不稳定,可控性不太好.这些都对控制的精度提出了很高的要求.
      3、工艺对控制系统的要求
      a、实现各个单元操作的集中监控,包括:温度、压力、流量、液位等物理量的监测与控制。动态参数检测、控制必须准确、可靠。合成反应器的中温要求170正负0.5度,醋酸蒸发器液位要求达到正负1%,
      b、必要的遥控措施,对突发事件如停电等,系统应采取相应的保护措施,确保在紧急情况下或需要的时候对一些关键的控制点(阀门、马达等)实施遥控。
      c、配置必要的报警和联锁。
      d、重要参数的记录和方便地查阅其实时趋势和历史趋势。
      e、可随时监测有关单元的有关参数或重要设备的运行情况。
      f、控制系统操作简单,参数设置、调整方便,便于操作,人性化的操作界面。
      g、操作员站显示整个生产工艺流程,修改和打印各种有关参数。
     2、FB-2000NS系统硬件配置
      本控制系统采用了三个监控站,和两个现场控制站.稳定性.两个现场控制站也采取了热备用冗余,任何一个出现了故障,自动切换到另外一个上正常运行.也增加了系统的可靠性和稳定性.所有的模拟量输出都采取了热备用,还有重要的显示参数也都采取了热备用..所有的模拟量都采取了和现场信号的光电隔离,所有的现场信号均通过了安全栅隔离. DCS的硬件配置如下: FB-2001NS -4块,FB-2005NS-3块,FB-2010NS 16块 ,FB-2020NS 28块, FB-2030NS 1块 ,FB-2040NS-4块 FB-SC20NS/R14块,FB-SC14NS/R-4块,FB-SCNS14-8块.FB-SC30NS1块. FB-SC42NS-4块.另外,报表打印机一台。

    Adept Tech 10330-11350 or 30330-11351 #7625

    A20B-0008-041 FANUC ELECTRONIC CIRCUIT BOARD REMANUFACTURED

    (O1-7) 1 ABB DCS502B0200-51-21P2000 DRIVE O1-7

    KUKA 001-034-92 USPP 00103492

    ULTRA SONIC SEAL A20 USPP A20

    CLEVELAND MOTION CONTROL E6A0110A1A0E10R NSPP E6A0110A1A0E10R

    ALLEN BRADLEY 150-A97NA-ND USPP 150A97NAND

    MITSUBISHI A6PHP-115UL USPP A6PHP115UL

    SIEMENS 6ES5-982-1AA11 USPP 6ES59821AA11

    ROBICON 454902.2 USPP 4549022

    VARIAN VZU-6991E4 USPP VZU6991E4

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    Siemens CONTROLLER CARD 6ES5300-5CA11

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    INDRAMAT MAC-112D-0-FD-3-C/130-A-//1 NSPP MAC112D0FD3C130A

    TRICONEX 3005 USPP 3005

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    1756-EWEB

    SIEMENS TXM1.16D

    Siemens 6SC6120-0FE00

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    Siemens PLC 6ES7 322-1FF01-0AA0 6ES73221FF010AA0

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    Schneider Modicon AS-884A-201/AS884A201

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    Schneider Modicon AS-B351

    Modicon Panelmate plus AEG pa-0616-000 pa-0603-040 MM-PMC1400C Display

    Siemens Simatic EM221 Input Module

    Siemens 6ES7 321-7BH01-0AB0 6ES73217BH010AB0

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    SIEMENS SINUMERIK810/840 ADAPTER 6FC5247-0AA31-0AA0

    SIEMENS SEALED SIMODRIVE 6SN1145-1AA01-0AA2

    SIEMENS Simodrive 6SC6130-0FE00 SERVO DRIVE BOARD

    SIEMENS 840D OP031 6FC5203-0AB11-0AA0 Free Ship

    Advantech ADAM-4080 Counter/Frequency Input NIB

    Allen-Bradley 1771-OZL 0-24V Contact Output Module

    ABB ACS 600 PN ACS601-0040-4-000B1200801 380-500VAC 40HP DRIVE ACS60100404000B1

    ACTUS POWER NPSA-102M4-E9BS NSPP NPSA102M4E9BS

    6ES7412-1XF04-0AB0 Brand , Factory Sealed,

    90 .

    SKALTEK DCD-120-4K USPP DCD1204K

    BRANSON 920BCA USPP 920BCA

    BAILEY CONTROLS NPSM-01 USPP NPSM01

    MODICON AS-S911-801 NSFP ASS911801

    KLOCKNER MOELLER DIL8-22-110V50HZ-120V60HZ NSFP DIL822110V50HZ12

    CUTLER HAMMER 511H992A USPP 511H992A

    Siemens 6ES5 095-8MB02 6ES50958MB02

    Siemens 6ES5-460-7LA12 6ES5460-7LA12 ANALOG MODULE

    SIEMENS 6ES5 911-0AA42 6ES59110AA42

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    Omron C500-II001

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    Schneider Modicon AS-185A-000 NSFP AS185A000

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    ABB 3ADT209018R0001 SERVO DRIVE

    ACCURAY 061552-001 USPP 061552001

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    800 WATT RSE SIERRA SWITCHGEAR COMMERCIAL SWITCHBOARD ELECTRIC PANNEL

    SIEMENS 6AV6-381-1BN06-2AX0 NSFP 6AV63811BN062AX0

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    GENERAL ELECTRIC SKPA36AT0800 USPP SKPA36AT0800

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    700' Syracuse aluminum urd 2/0-2/0-2/0-1 direct burial qudplx wire

    POWERTEC INDUSTRIAL MOTORS INC C0202-S4CH099 USPP C0202S4CH099

    ALLEN BRADLEY 1784-T30C USPP 1784T30C

    ALLEN BRADLEY 1336S-C015-AA-EN4-HAZ USPP 1336SC015AAEN4HA

    GENERAL ELECTRIC DS3800HSQD1J1E USPP DS3800HSQD1J1E

    TEXAS INSTRUMENTS PLC 555-1101 USPP 5551101

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    SIEMENS 6ES5 265-8MA01 6ES52658MA01

    SIEMENS 6ES5-777-0BC01 USPP 6ES57770BC01

    Siemens 6ES5 700-8EA11 USPP 6ES57008EA11

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    RELIANCE ELECTRIC 57C-328 USPP 57C328

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    ALLENBRADLEY1771-OW16OUTPUTMODULE1771OW16

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    FOXBORO 43AP-FA42C-TA1A NSFP 43APFA42CTA1A

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来源:工控备件
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