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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。

Schneider TWDLCAA24DRF Telemecanique MODICON TWIDO PLC

Siemens 6ES7 323-1BH01-0AA0 -FS- 6ES73231BH010AA0

PVDM3-64 64-CHANNEL HIGH-DENSITY VOICE VIDEO DSP MODULE

SIEMENS 505-4532 OUTPUT MODULE 5054532

SIEMENS Sinumerik 840C/840CE CRT 6FC5103-0AB01-0AA2 NIB

SIEMENS 6DD1661-0AB0 COMMUNICATION MODULE

SIEMENS 6SN1118-0DJ23-0AA2 6SN1 118-0DJ23-0AA2 SIMODRIVE 611 Board

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5356#B1

SIEMENS SINUMERIK 840C/840CE 6FC5114-0AA01-1AA0 NIB

SIEMENS 6FC3-984-3RA USPP 6FC39843RA

AllenBradley2711C-T10C/B2711CT10CPanelviewC1000

ALLEN BRADLEY TERMINAL LUG KIT 199-LF1

ABB Irb 6400 Axis 1 motor; part# 3HAB4039-1

Advanced Micro Controls 1944

(Q5-4) 1 ALLEN BRADLEY 803-F812 ROTARY CAM LIMIT SWITCH Q5-4

METRONICS ALPHAJET-C-HS NSFP ALPHAJETCHS

ALLEN BRADLEY 1336R-VB078-AA-HAP USPP 1336RVB078AAHAP

GENERAL ELECTRIC 0786E201P1G0001 NSFP 0786E201P1G0001

FANUC A20B-0004-0171-10D USPP A20B0004017110D

SIEMENS 6ES5-247-4UA41 USPP 6ES52474UA41

RELIANCE ELECTRIC 86466-60S NSPP 8646660S

SQUARE D HU366 USPP HU366

Siemens 6ES5 470-8MC12 -FS- 6ES54708MC12

Siemens 6ES5-951-7ND41

SIEMENS 6ES5-445-3AA11 USPP 6ES54453AA11

Siemens 6ES5 300-3AB11 /6ES53003AB11

Siemens S5 BUS MODULE 6ES5 700-8MA11 6ES57008MA11

Siemens C98043-A1663-L C98043-A1663-L11-48

Siemens 6ES5 451-8MR12 -FS- 6ES54518MR12

Square D 8030 CRK-300

RV LP INTERFACE MODULE PN 38030057

WS-C2950G-48-EI CISCO CAT. SWITCH 2950 48 10/100 WITH 2 GBIC SLOTS

Siemens 6ES7392-1BM01-0AA0 in Box ping Worldwide

Siemens Soft Starter 3RK1903-0BA00 3RK19030BA00 FreShip

Schleicher USA 8/1 D/2.1 31511134 880 075

Schneider Modicon ASJ14600 Multi-Node Panel AS-J146-000

Schneider Modicon AS-B557-001 NSPP ASB557001

Schneider Modicon AS-W808-008 NSFP ASW808008

Schneider Modicon AS-C384-204 Programmable Mainframe Controller

Schneider Modicon AS-B829-116 Input Module 5VOLT TTL Fast Respon16POINT

Modicon 992 019 1002 Robot Teach Pendant HHTP

Siemens Analog Input Sub Module 6ES5498-1AA61

SEALEDASA5540-AIP20-K9 CISCO 5540 W/AIP-SSM-20 SW HA 4GE1FE 3DES/AES

Siemens MS300 Circuit Board MS3OO 6FX1113-4AD01 6FX11134AD01 6FX1113-4ADO1

SIEMENS SINUMERIK 6FC5203-0AF02-0AA1 MembraKeypad

Spectrum Industires Power Communication Module parts

SIEMENS 6SN1123-1AA00-0CA0 Version D Simodrive LT-Modul Int 50A 6SN11231AA000CA0

SIEMENS 6SN1146-1AB00-0BA1 SIMODRIVE 611 GOOD TAKEOUT

SIEMENS 6FC5-247-0AA00-0AA2 USPP 6FC52470AA000AA2

Alllen Bradley Panelview 300 Micro Panel View 2711-M3A18L1 w/ AB 1761-CBL-HM02

ALLEN-BRADLEY 160-BA01NPS1P1 0.5HP 460VAC Control. in good condition

ABB BAILEY SYMPHONY CONTROLS DIGITAL IMASI23 ANALOG INPUT SLAVE MODULE 88304

ADEPT TECH 133 USPP 133

(2770) Allen Bradley Motor Controller 97A 400-480VAC 150-A97NB w/ Protection Mod

INDRAMAT DSC3.1-50-115 USPP DSC3150115

TEXAS INSTRUMENTS PLC 555-1104 USPP 5551104

FANUC A06B-0166-B675 NSFP A06B0166B675

CUTLER HAMMER GA210TC105-A USPP GA210TC105A

RELIANCE ELECTRIC 0-57552-4B USPP 0575524B

MODICON PC-E984-785 USPP PCE984785

JOSLYN CLARK 5003-2001-11 NSPP 5003200111

Siemens 6ES5 373-1AA81 -FS- 6ES53731AA81

Siemens 6ES5-605-0UB12 USPP 6ES56050UB12

SIEMENS 6ES5-375-0LC21 USPP 6ES53750LC21

Siemens 6ES5 375-1LA15 -- 6ES53751LA15

Siemens Bus I/O Module 6ES5 700-8MA21

SIEMENS 6SE3212-0DA40 6SE32120DA40 IN BOX

Siemens TP27-6 6AV3 627-1NK00-0AX0 Touchscreen Glass

Siemens 6EW1380-4AB01

MARCONI ATM SINGLE MODE INTERFACE MODULE FOR THE ASX200BX NM4155SMIRD

XYCOM XVME-660 VME BUS XVME 660 XVME660 Intel

Siemens 6ES7 253-1AA22-0XA0 6ES72531AA220XA0 in Box

SIEMENS OPM2 6SE3 290-0XX87-8BF0 OPERATOR INTERFACE

Reliance 0-51839-8

Schneider Modicon AS-B360-001 Relay Output Module ASB360001

Schneider Modicon AS-984B-832 USPP AS984B832

Schneider Modicon AS-P453-612 USPP ASP453612

Schneider Modicon AS-B801-000 ASB801000 B801 Spare Slot

Schneider Modicon AS-B062-P00 / 100-037

MODICON PLC MODULE AS-B824-016 24 VDC OUTPUT

SIEMENS SIMATIC S5 ANALOG INPUT MODULE CAT6ES5464-8MC11

Siemens 6ES7 331-7KF02-0AB0 -- 6ES73317KF020AB0

SIEMENS SIMATIC HMI OP3 6AV3503-1DB10 Operator Panel

SIEMENS 6DD1601-0AE012 mo. warrantyFree UK/EU ShippingPrice Inc UK VAT

SIEMENS Sinumerik Panelfront 6FC5203-0AF02-02-0AA0 Version L_6FC52030AF02020AA0

SIEMENS 90 DAYS WARRANTYDigital High Performance Control Board

SIEMENS Simodrive 6SN1118-0DJ21-0AA0 6SN11180DJ210AA0

SIEMENS Control Rack 6FC3761-2FA Z_ Genumerik 3G Unit Sinumerik 6FC 3761

AFP8551 Cable USB version for Panasonic FP1/FP3/FP5

Allen-Bradley 2706-E43J32B1 E43J32B1 ser A rev B GOOD

ABB ACH501-050-4-00P2 ACH500 VARIABLE TORQUE AC 50HP 480V-AC MOTOR DRIVE B228004

Acterna TB / MTS-8000 11.1G Optical Ethernet Transport Module T-BERD / MTS 8000

6ES7314-5AE83-0AB0 Brand , Factory Sealed,

8703A Agilent opt 012/ 100/ 210 Network Analyzer

SIEMENS 6SE9-221-5DC40 NSFP 6SE92215DC40

BANNER ENGINEERING USDKTE4824C5YP2 NSFP USDKTE4824C5YP2

AUTOMATED LOGIC ME812U-LGR NSFP ME812ULGR

MODICON AS-984B864 USPP AS984B864

INDUSTRIAL DEVICES LM-MRS003 NSFP LMMRS003

BOWTHORPE MDSP3/90/ME NSPP MDSP390ME

YOKOGAWA SLPC151E/NPR/MTS USPP SLPC151ENPRMTS

Siemens 6ES5-454-7LA12 NSFP 6ES54547LA12

SIEMENS 6ES5 752-0AA12 6ES57520AA12

SIEMENS S5 6ES5 456-7LA11 6ES54567LA11

Siemens S5 PLC Cable PC-TTY 6ES5 734-1BD20 NIB FS

SIEMENS 6ES7-210-0AA00-0XB0 6ES7210-0AA00-0XB0 FreeShip

Siemens Servo Motor 1FT6044-4AK71-4TG0 NIB

Siemens 3VU9135-1AB05

Hp 584687-001 Bluetooth Module Interface Cable

WELLS FARGO SIEMENS SXR-2L ADDRESSABLE POINT INTERFACE MODULE EXACTPOINT SM APT

Siemens 6ES5 306 -7LA11 6ES5306 -7LA11

Siemens LOGO! DM8 230R 6ED1 055-1FB00-0BA1 Module

Omron c200h-cn221

Schneider Modicon AS-HDTA-200 Primary Subrack 5 Slots

Schneider Modicon 984 series AS-B809-016 Free Ship

Schneider Modicon AS-J146-000 USPP ASJ146000

Schneider Modicon MODICON/ AS-P120-000/042 403 424/7657 POWER SUPPLY NIB

Schneider Modicon AS-J890-001

Schneider Modicon TSX COMPACT DISCRETE INPUT MODULE DEP-220 / AS-BDEP-220

TELEMECANIQUE XBTGT2120 Touchscreen Glass

Schneider TELEMECANIQUE TWIDO TWDLMDA40DTK

Siemens TI 505-6202 2 Ch Analog Output Module NIB

Siemens 6AV3503-1DB10 6AV3 503-1DB10 SIMATIC OP3 Operator Panel Mono Keypad 24V

SIEMENS Sinumerik 6FX1120-4BA01 PC Board

Ethernet Communication Module USB SPI ENC28J60 Remote

SIEMENS Simodrive POSMO A 300W 6SN21S5-2BD10-1BA1 NIB

SIEMENS SIMODRIVE 6SN1145-1BA02-0CA1SINUMETIK 840D NCU-BOX 6FC5247-0AA002ZA

SIEMENS 4 Genuine Printronix 107675-005 OCR Ribbon

Allen-Bradley 855PDB24MEH4322 Operator Indicator Light 24VAC/DC Red/Green

ABB 1000 KVA Dry-Type Transformer 2400 V - 480/277 Volt

AC TECHNOLOGY SF5250 NSFP SF5250

A06B-6058-H221 Drive Fanuc

8 WAVEGUIDE CONNECTORES

SEW EURODRIVE 31C370-503-4-00 NSFP 31C370503400

ALLEN BRADLEY 6500-PS7TS USPP 6500PS7TS

ALLEN BRADLEY 2755-L4RDA USPP 2755L4RDA

INDUSTRIAL DEVICES LM-MRS004 NSFP LMMRS004

GENERAL ELECTRIC DS3800DGRC1C1D USPP DS3800DGRC1C1D

YAMATAKE 82114927-002 USPP 82114927002

MAVILOR MO-300 NSFP MO300

Siemens 6ES5-302-3KA11 USPP 6ES53023KA11

SIEMENS 6ES5 422-8MA11 -- 6ES54228MA11

SIEMENS S5 6ES5 318-8MA11 ET100U

Siemens CPU Module w/ Sinec 6ES5 095-8MB02 WOW

SIEMENS 6ES7 215-2BD00-0XB0 CPU 215-2 PROFIBUS DP

Siemens OP27 6AV3627-1JK00-0AX0 Operator Display Panel

RELEASE SuperMicro X9DRD-IF Motherboard FULL MFR

Texas Instruments 5TI-1031-1

Telemecanique LA1 LC580BD Interface Module

TSXSCY21601 Modicon Premium 485 MP TSX-SCY-216-01

Siemens DCS Module 6DS1701-8AB IN Box, seal opened,

Modicon MM-PM15-401

Schneider Modicon REMOTE I/O PROCESSOR S908 RIO INTERFACE MODULE AS-J890-101

Schneider Modicon ASBADU204 Compact Analog Input AS-BADU-204

Schneider Modicon AS-BFRQ-254C USPP ASBFRQ254C

Schneider Modicon AS-BZAE-204

Schneider Modicon AS-P120-000 P120 Compact 115/230V AC Power Supply WARRANTY

Schneider Modicon High Speed Counter AS-B883-001

Schneider Telemecanique Overload Relay LRD16KN

SCHNEIDER AUTOMATION MODICON TSX 140DA154000 INPUT MODULE

PWR-950-AC 950W AC P/S FOR CISCO 7600 AND CAT 6500

SIEMENS 6ES5451-4UA12 OUTPUT MODULE 32POINT .5AMP 24VDC IN A BOX

SIEMENS 6DD1640-0AC012 mo. warrantyFree UK/EU ShippingPrice Inc UK VAT

LS INDUSTRIAL G7L-CUEB RS-232C COMMUNICATION MODULE

SIEMENS Simodrive 6SN1123-1AB00-0HA1

SIEMENS Sinumerik 840C/840CE P/Supp 6FC5114-0AA01-1AA0

SIEMENS /MOORE 15994-21-4 PC BOARD MODULE XLNT

Allen-Bradley SLC 500 Cat. 1746-OA16 Output Module Series D

ALLEN BRADLEY RIGHT HAND DOOR HARDWARE KIT 1494V-L3

ABB SACE E2B/E-1600 OUT OF

A06B-0148-B088#0075 FANUC SERVO MOTORS REMANUFACTURED

6x500m/spool Fujikura Panda Type Polarization Maintaining Fiber 1300nm

ORMEC GN3-J594001 USPP GN3J594001

ALLEN BRADLEY 1771-DMC4 NSPP 1771DMC4

ALLEN BRADLEY 1336S-B007-AX-EN-GM1-L4 USPP 1336SB007AXENGM1

GENERAL ELECTRIC DS200IMCPG1CCB USPP DS200IMCPG1CCB

TB WOODS WFC4020-0CHT USPP WFC40200CHT

SQUARE D ATV-58HD23M2XZU USPP ATV58HD23M2XZU

CONVERGENT ENERGY 054620701 USPP 054620701

Siemens 6ES5 951-7LD21 6ES5951-7LD21

Siemens 6ES5-242-1AA32Counter Module S5-135/55 IP242A

SIEMENS 6ES5-752-0AA12/6ES5752-0AA12 INTERFACE SUBMODULE NIB

Siemens 6ES5 498-1AA11 NSFP 6ES54981AA11

Siemens 6AV6642-0AA11-0AX0 6AV6 642-0AA11-0AX0 TP177A

Siemens LOGO 6ED1 052-1FB00-0BA4 6ED10521FB000BA4

RSP720-3C-10GE Cisco Route Switch Processor 720 with 10 Gigabit EN uplinks Rout

Telemecanique TSX SUP 702

SIEMENS Simatic 6ES5441-4UA11 Comm. Interface Module

Wago 750-493 3-phase power measurement module 1 A

SIEMENS 6SE9522-4DG40

Modicon AS-P464-002

Schneider Modicon Electric Modbus Plus Terminator Connector Kit AS-MBKT-185

Schneider Modicon ASB371001 BCD Register Input Module AS-B371-001

Schneider Modicon AS-B875-001 8 Channel Analog Input

Schneider Modicon AS-B827-032 24VDC Input Module

Schneider Modicon Gould 484 Programmable Controller AS-C484-266

Schneider Modicon AS-J878-000/ASJ878000 Modem NICE

Schneider Automation TSXDSY16T2 Output Module 16 Point TSX-DSY-16T2 -

SIEMENS 505-6108B ANALOG INPUT MODULE 5056108B

Reliance Shark 45C965 Triac Output Module 45C-965

Siemens 9.5" LCD Monitor 6FM2805-4AR03_6FM28054AR03_6FM28O5-4ARO3_6FM28O54ARO3

SIEMENS Sinumerik Module Modul DMP #6FC5111-0CA03-0AA2

Prosoft MVI56-GSC Communications Module 1

SIEMENS Module 6SN1123-1AA00-0AA2 (6SN11231AA000AA2)NIB

SIEMENS SIMODRIVE 6SN1145-1BA01-0DA1SINUMETIK 840D NCU 6FC52476SN11236FC5357

SIEMENS 6FC3984-1FB Tape Reader - Used

ALLENBRADLEY2706-NC12DATALINERPROGRAMMINGCABLE

Allen Bradley Terminal Board 9101-1780 Amphenol /Sealed

ABB IRC5 Teach Pendant; Part# 3HAC12929-1 GTPU WITH 10M CABLE

ZEBRA 090-701-00000 USPP 09070100000

(RR12) 1 ALLEN BRADLEY 2711-TA1 SER B PANELVIEW TERMINAL RR12

MITSUBISHI FR-A540-45K USPP FRA54045K

ALLEN BRADLEY 1336VT-B030-EOR-FA2-L3 NSFP 1336VTB030EORFA2

GENERAL ELECTRIC 531X132APGACG1 NSFP 531X132APGACG1

FISHER ROSEMOUNT 3095-MA2CA0018AB10NABS5 NSFP 3095MA2CA0018AB1

SIEMENS 6ES5-921-3WB15 NSPP 6ES59213WB15

REXROTH 0-608-841011 USPP 0608841011

TEXAS INSTRUMENTS PLC PM550-112 USPP PM550112

Siemens 6ES5 523-3UA11 -- 6ES55233UA11

Siemens 6ES5-982-1AA11 USPP 6ES59821AA11

SIEMENS 6ES5-451-7LA11 USPP 6ES54517LA11

Siemens 6ES5 318-8MA12/6ES5318-8MA12 INTERFACE MODULE XLNT

Siemens S5 Digital Output 6ES5 441-7LA11

Siemens C98043-A7007-L1-4