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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。

MODICON AS-P453-641 USPP ASP453641

MODICON AS-P451-522 USPP ASP451522

ALLEN BRADLEY 194R-ND250P3 NSPP 194RND250P3

Siemens 6ES5 306-7LA11 6ES53067LA11

Siemens Analog Input Module 6ES5-465-4UA11

SIEMENS 6ES5 705-0BB50 6ES57050BB50

SIEMENS S5-100U 6ES5 931-8MD11

Siemens S5 6ES5 942-7UA11 6ES59427UA11 CPU Module

Siemens 6ES7 223-1PL22-0XA0 6ES7223-1PL22-0XA0 FreeShip

SIEMENS OP7 6AV3 607-1JC30-0AX1 Membrane Keypad ping Worldwide

Qlogic QLE8142-SR 10Gb CNA Dual Port PCIe HBA FCoE with 10Gb optical SFP

GM TECH 1 OBD 2 VEHICLE INTERFACE MODULE 14 PIN DLC SELF TEST ADAPTER AND CABLE

TOTAL CONTROL "QPI21100C2P serA" OPERATOR INTERFACE WITH COMMUNICATION MODULE

Siemens 3RK1903-1CB00 3RK19031CB00

SIEMENS FLASHING PULSE GENERATOR 6DS1922-8AA IN BOX, Seal opened,

Modicon PC-L984-785

Schneider Modicon GOULD B374 ANALOG OUTPUT MODULE AS-B374-001

Schneider Modicon AS-BVIC-224 TESTED 4 Ch Ctr IN ASBVIC224

Schneider Modicon AS-D004-030 USPP ASD004030

Schneider Modicon AS-P180-010

Schneider Modicon AS-BDEP-220 TSX Compact Discrete Input

Schneider Modicon Micro 84 Controller AS-M84A-002 Programmer P370P371 Program Pack

Schneider TELEMECANIQUE XBT-GT-2110 XBTGT2110 with cable

Schneider Lexium 23 AC Servo Driver LXM23CU01M3X 100W

Promise Removable Device PR401US Pegasus R4 4TB RAID System 4x1TB SATA

SIEMENS 6ES5 454-7LA12 OUTPUT MODULE

SIEMENS 6DD3-470-0AD0/6DD3470-0AD0 BOARD XLNT

HONEYWELL MEASUREX DIGITAL 05366901 SERIAL LINE COMMUNICATION MODULE 62759

SIEMENS SIMODRIVE 6SN1145-1BA01-0DA1 6SN11451BA010DA1

SIEMENS SINUMERIK 810D/840DPCU20 6FC5210-0DF00-1AA1

SIEMENS MOORE ACM ADVANCED 39ACM24BDN CONTROL MODULE APACS 24V 21196

ALLEN-BRADLEY Panelview 300 24VDC 2711-B5A1L1 Series F

553VIC10100 MODICON MONITORS CRT REMANUFACTURED

ABB Teach Pendant 3HAB-5386-1/1 #34232

A06B-0153-B077#7076 FANUC SERVO MOTORS REMANUFACTURED

715-031752-206 CAP LOWER ELECTRODE 6"

RELIANCE ELECTRIC 19C401 USPP 19C401

ALLEN BRADLEY 1785-L40L USPP 1785L40L

ALLEN BRADLEY 1398-DDM-020 NSPP 1398DDM020

GENERAL ELECTRIC DS3800NPSE1E1G USPP DS3800NPSE1E1G

TOSHIBA VT130H1U-4220-B0H USPP VT130H1U4220B0H

SYMAX 8030-CRM-510 NSFP 8030CRM510

FISHER ROSEMOUNT 1151AP8S52B1M3 USPP 1151AP8S52B1M3

Siemens 6ES5-095-8MD02 USPP 6ES50958MD02

SIEMENS 6ES5 318-8MB12 INTERFACE ET200U MODULE

SIEMENS 6ES5-930-7AA22/6ES5930-7AA22 POWER SUPPLY XLNT

Siemens 6ES5 712-8AF00 USPP 6ES57128AF00

Siemens 6ED1055-1FB00-0BA1 ping

Siemens LOGO! 6EP1 322-1SH41 6EP1322-1SH41

Rigol Function/Arbitrary Waveform Generator DG2041A 40M

Telemecanique ZB2-BW031

Smema Interface Module 60.009.037

VWIC-2MFT-E1 CISCO 2-PORT RJ-48 MULTIFLEX TRUNK E1

SIEMENS C73040-A51-C154-02-85 J2 Worldwide

Modicon AS-T584-006

Schneider Modicon AUTOMATION INC DEP 218/AS-BDEP-218

Schneider Modicon AEG/GOULD// AS-B551-000 INPUT MODULE XLNT

Schneider Modicon AS-B885-002 USPP ASB885002

Schneider Modicon AS-B243-110

Schneider Modicon PC-0984-381 CPU Module AS-9584-000 w/AS-M380-004 & AS-E381-902 NICE

Schneider Modicon AS-P890-000

Schneider Automation / Modicon PanelMate Plus MM-PMC2-200 WARRANTY

SIEMENS TI30525N INPUT MODULE

RELIANCE ELECTRIC 0-57405-E USPP 057405E

Siemens 6ES7-221-1BF30-0XB0

SIEMENS SinumerikSimodriveSimaticservo drive motor repair

Omron C500-LK003 3G2A5-LK003 Communication Module

SIEMENS SIMODRIVE 462018.7925.1150A6SN1123-1AA00-0CA1 BOARD

SIEMENS SINUMERIK PCU 50 6FC5210-0DF20-0AA0

SIEMENS Marble Products International Fossil Coaster Set of 6 FC101

AllenBradley1771-ODDPLC-5Isolated120VACOutputModule

Allen Bradley SLC-500 Output Mod. 16-Point 1746-OA16

ABB PCB BOARD DSQC 328A 3HAC 17970-1

Zygo 7003A & 7015 & 7012

, factory sealed SIEMENS 6FX1132-0BA01

MODICON AM-S980-810 USPP AMS980810

ALLEN BRADLEY 1394C-SJT10-D USPP 1394CSJT10D

GETTYS 110-0134 NSFP 1100134

GE FANUC 44A398722-G03 USPP 44A398722G03

SIEMENS 6SC9111-2AF2 USPP 6SC91112AF2

SICK OPTIC ELECTRONIC PLS101-112 USPP PLS101112

ACCURAY 725782 USPP 725782

Siemens 6ES5 900-7AA11 6ES59007AA11

Siemens S5 6ES5 385-8MB11 High Speed Counter Module

SIEMENS 6ES5-464-8ME11/6ES5464-8ME11 ANALOG INPUT MODULE NIB

Siemens 6ES5 430-4UA12/6ES54304UA12 FACTORY SEALED

Siemens S5 Power Supply Module S5-110A 6ES5 930-7AA21 WARRANTY

Siemens CUVC 6ES7 090-0XX84-0AB0

SFP-10G-LR LONGLINE 10GBASE-LR SFP MODULE FOR CISCO

Square D 8030 RRK-200

Siemens 6ES5 318-8MA12 Simatic S5 Interface Module

WE SHIP SAME CISCO WS-C3750X-24S-E SWITCH 1 YR 3750X-24S

Siemens 6GK7 243-2AX01-0XA0

SIEMENS TP177B 6AV6 642-0BA01-1AX1 Touch Glass + Protective film

Schneider Modicon AS-BDEP-210 Discrete Input NIB

Schneider Modicon ASBDEP210 8 Pt 120VAC Input Module AS-BDEP-210 Electric

Schneider Modicon AS-B806-032 NSFP ASB806032

Schneider Modicon Panelmate plus MM-PMC3-100 110/230 V As Is Parts Or Repair

Schneider Modicon AS-MBPL-001 USPP ASMBPL001

Schneider Modicon AS-B885-002 ASCII Basic Module

Schneider/Modicon PLC Output Module TSXDSZ32R5 NIB

Siemens 6ES7 321-1FF01-0AA0 DIGITAL INPUT MODULE PART TYPE SM 321 8 POINT

SANS DIGITAL MR4UT 4-bay hot-swap hardware RAID storage

Siemens Handwheel Sinumerik 6FC9320-5DC00 5V nice

SIEMENS Sinumerik 802S 802C Mechanical Keypad 2 month warranty

SIEMENS 6DD1661-0AB0 COMMUNICATION MODULE

SIEMENS 6SN1145-1AA01-0AA2 SIMODRIVE 611 INFEED MODULE 10 25kW UNREGULATED

SIEMENS 6SN1114-0NB01-0AA0 Simodrive 611U Option- Profibus DP3 Version B

SIEMENS 6FC5130-0CA01-0AA0 USPP 6FC51300CA010AA0

AllenBradleyPanelview2711-B6C2X/A2711B6C2X

ALLEN BRADLEY X-51343 NSFP X51343

ABB DRIVES,INDUSTRY OY CONVERTER UNIT ACS504-100-5,CONTROL UNIT ACS50Y-YYY-Y-00P

AdeptSix 300 Robot

(8538) 1 ALLEN BRADLEY 803-B6 ROTARY CAM LIMIT SWITCH

INDRAMAT TRANS-01.00 USPP TRANS0100

WINSMITH 4CV USPP 4CV

FANUC A16B-0160-0950 NSPP A16B01600950

ELME MSS0004000 USPP MSS0004000

RELIANCE ELECTRIC 86466-26R USPP 8646626R

OMRON C500-NC211 USPP C500NC211

OMRON CVM1-CPU01-EV2 USPP CVM1CPU01EV2

Siemens 6ES5 441-4UA14 -FS- 6ES54414UA14

Siemens 6ES5-921-3WB11 USPP 6ES59213WB11

SIEMENS 6ES5-400-7AA13 USPP 6ES54007AA13

Siemens 6ES5 441-7LA11 Digital Output Clip Broken

Siemens S5 6ES5 420-7LA11

Siemens 6SE7090-0XX84-0FF5 DP Communication Card

Siemens 6ES7 331-7SF00-0AB0 SIMATIC SM 331 ANALOG INPUT

Southcon 8000-279

MOORE PRODUCTS 15222-1 INTERFACE MODULE NIB

WS-X4648-RJ45-E CISCO Catalyst 4500E Series Line Card Switch 48 ports

SIEMENS 6ES7 421-1FH20-0AA0 6ES7421-1FH20-0AA0 NIB

Siemens RWD62 Controller

Reliance 0-57412

Schneider Modicon Kodak Retina Reflex III with -Kreuznach Retina-Xenon f1.9/50mm AS-IS

Schneider Modicon AS-B258-101 NSPP ASB258101

Schneider Modicon AS-P964-000 NSFP ASP964000

Schneider Modicon AS-B838-032 24 VDC 32-Point Output Module

Schneider Modicon AS-B802-008/ASB802008

Modicon MM-PMA2-300 PanelMate Plus P/N 92-00808-02

Siemens Simatic 505-4116 Low VDC Input Module

SIEMENS 6ES5-305-7LB11 NSPP 6ES53057LB11

SIEMENS S5 6ES5 470-7LC12 Analog Output Module

SIEMENS 6DD2920-0AC0 LIGHT INTERFACE MODULE

SIEMENS SINUMERIK 840C/840CE MMC CPU 6FC5110-0DB03-0AA4 NIB

SIEMENS 6SN1112-1AC01-0AA1 SIMODRIVE 6SN11121AC010AA1

SIEMENS SIMODRIVE 611 SERVO DRIVE 6SN1145-1BA01-0DAI IN BOX

SIEMENS 6FC9348-5XC FNFP 6FC93485XC

Advantech Motherboard PCA-6104 NIB

ALLEN-BRADLEY 1771-OD16 120V AC Isolated Output Module

ABB ACS60101205000B1200000

ADDIDATA PA8000 NSPP PA8000

6ES7614-1AH00-0AB3 6ES7614-1AH03-0AB3 Brand , Factory Sealed,

90pcs LSI Agere 2650B Broadband Photodiode For CATV, Video Transportation, EDFA

SQUARE D PHF2036 NSPP PHF2036

CONTROL TECHNIQUES SP4401 USPP SP4401

BONO ENERGIA F3330-984333002 NSPP F3330984333002

NACHI AUXL112A USPP AUXL112A

MEASUREX 08562100 USPP 08562100

FANUC A06B-6102-H206 USPP A06B6102H206

Siemens 6ES5 185-3UA00 6ES51853UA00

Siemens 6ES5-465-7LA13 Input Module Analog NIB

SIEMENS 6ES5-095-8MA02 6ES5095-8MA02 CPU

SIEMENS S5 6ES5-530-7LA12 MODULE

Siemens 5 Part 6ES5 422-8MA11

SIEMENS 6ES7413-1XG02-0AB0

Siemens Stepdrive C 6FC5548-0AA00-0AA0

Siemens 6ES5376-1AA31

Intel 683760-004 Stack Interface Module for 500 Series

YOSHIMURA FOR POLARIS XP900RZR 2011

Siemens 6ES5921-3UA12 IN BOX

Siemens MP277-8 6AV6 643-0CB01-1AX1 Protective Film

Oriental Motor E3769-122 / E3570-424

Schneider Modicon AS-B885-111/ASB885111 Motion Module CLEANOFFERS ACCEPTED

Schneider Modicon AS-516P-002 USPP AS516P002

Schneider Modicon AS-L206-011 USPP ASL206011

Schneider Modicon AS-8533-003 NSFP AS8533003

Schneider Modicon / Remote Processor AS-J890-001

Schneider Modicon AS-B824-016 Tru High Output Module

Siemens UD5N Input Module

Schneider/Modicon 140CPS11420 CPS11420

Siemens Sinumerik 840 1P-6FC5103-0AD13-0AA0 1P6FC51030AD130AA0 _ 570-524-9101-00

SIEMENS 500-5019 OUTPUT MODULE 5005019

SIEMENS SINUMERIK 810D/840DPCU20 6FC5210-0DF00-1AA1

Cisco WS-SVC-CMM-6T1 Communication Media Module T1 interface port adapter JP

SIEMENS SIMODRIVE 6SN1145-1BA02-OCAO

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC53562AA

Advantech MIC-3924 A1 03-1

ALLEN-BRADLEY 2750-PA POWER SUPPLY

ABB 3HAB5761-1 IRB6400 Robot M96, M97, M98 Servo Motor Axis 4

ACCURAY 086266-001 SYS SCANNER VME CONTROL BOARD CARD VMEBUS 84698

A100615 Agilent E4406A Transmitter Tester 7MHz-4.0GHz (Opt. B78 BAC)

80C04-CR2 Tektronix Optical Sampling Module

SIEMENS 6ES5-927-3KA13 NSFP 6ES59273KA13

ASEA BROWN BOVERI 57275812 NSFP 57275812

ALLEN BRADLEY 8200014700 USPP 8200014700

LORAIN PRODUCTS ES281CMB NSFP ES281CMB

HILBERLING HN-800F USPP HN800F

ALLEN BRADLEY 1336F-CWF20-AA-EN-L4 NSPP 1336FCWF20AAENL4

RELIANCE ELECTRIC 0-57409-F NSPP 057409F

Siemens 6ES5-370-0AA31 USPP 6ES53700AA31

SIEMENS 6ES5 450-8MD11 6ES54508MD11

SIEMENS smatic S5 plc card 6ES5 262-8MA13 CLOSED LOOP Controller

Siemens Output Module 6ES5-451-8MR12 17031

Siemens 6ES7 291-8GE20-0XA0 Memory Module

SIEMENS OPM2 6SE3290-0XX87-8BF0 OPERATOR INTERFACE

PWR-C49M-1000AC 4900M AC POWER SUPPLY 1000 WATTS

GSM Modem Pool 16 Ports RS232 PCI interface Wavecom Module AT Commands Q2403

Tripp Lite B054-00-USB Server Interface Module-USB

SIEMENS 6AG1 322-1BH01-2AA0 6AG1322-1BH01-2AA0 FreeShip

Siemens IGBT Module BSM50GB100D

Modicon SW-AP5T-RTA

Schneider Modicon Gould AS-B350-001 Output Module ASB350001 AEG

Schneider Modicon ASJ890001 Excellent Remote I/O Processor Module AS-J890-001

Schneider Modicon AS-E380-902 USPP ASE380902

Schneider Modicon AS-P965-000

Schneider Modicon AS-884A

Schneider Modicon module AS-B825-016. 24 VDC INPUT TRUE HIH

Schneider TSX Premium TSXETY410 Interface Module ETY410

Schneider Modicon 467NHP811DP 467-NHP-811-DP Profibus-DP PCMIA 3

PowerCore CPCI-3750 Single Board CompactPCI Computer

SIEMENS 6ES5 440-8MA11 DIGITAL OUTPUT MODULE

SIEMENS 6FC5247-0AF11-0AA0 SINUMERIK 810D/840D PROFIBUS

HILSCHER CIF-50-PB COMMUNICATION MODULE INTERFACE CIF50PB