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一、系統描述
　　醋酸乙烯是一種十分重要的工業原料,其市場非常廣闊.它的生產過程主要分為兩個大的過程: 合成和精餾.前者是發生化學反映生成醋酸乙烯的過程, 后者則是將生成的醋酸乙烯通過學,物理過程來進行提純.其工藝流程圖如下:
　2、本工藝的特點和難點
　　醋酸乙烯的生產是個塔體非常多的系統,調節回路眾多,系統的關聯性非常強,一個參數的控制的好壞直接影響到其他參數的控制的成敗.一個系統的波動可能帶垮整個系統.,因為其產品醋酸乙烯的濃度要求非常高,達到99.9%以上,因此對反應溫度,以及流量等參數的控制要求非常平穩,合成反應器的中溫要求170正負0.5度,醋酸蒸發器液位要求達到正負1%,還有乙炔的流量非常不穩定,可控性不太好.這些都對控制的精度提出了很高的要求.
　　3、工藝對控制系統的要求
　　a、實現各個單元操作的集中監控，包括：溫度、壓力、流量、液位等物理量的監測與控制。動態參數檢測、控制必須準確、可靠。合成反應器的中溫要求170正負0.5度,醋酸蒸發器液位要求達到正負1%,
　　b、必要的遙控措施,對突發事件如停電等，系統應采取相應的保護措施，確保在緊急情況下或需要的時候對一些關鍵的控制點(閥門、馬達等)實施遙控。
　　c、配置必要的報警和聯鎖。
　　d、重要參數的記錄和方便地查閱其實時趨勢和歷史趨勢。
　　e、可隨時監測有關單元的有關參數或重要設備的運行情況。
　　f、控制系統操作簡單，參數設置、調整方便，便于操作，人性化的操作界面。
　　g、操作員站顯示整個生產工藝流程，修改和打印各種有關參數。
　2、FB-2000NS系統硬件配置
　　本控制系統采用了三個監控站,和兩個現場控制站.穩定性.兩個現場控制站也采取了熱備用冗余,任何一個出現了故障,自動切換到另外一個上正常運行.也增加了系統的可靠性和穩定性.所有的模擬量輸出都采取了熱備用,還有重要的顯示參數也都采取了熱備用..所有的模擬量都采取了和現場信號的光電隔離,所有的現場信號均通過了安全柵隔離. DCS的硬件配置如下: FB-2001NS -4塊,FB-2005NS-3塊,FB-2010NS 16塊 ,FB-2020NS 28塊, FB-2030NS 1塊 ,FB-2040NS-4塊 FB-SC20NS/R14塊,FB-SC14NS/R-4塊,FB-SCNS14-8塊.FB-SC30NS1塊. FB-SC42NS-4塊.另外，報表打印機一臺。

ALLEN BRADLEY 8410-MPNL NSFP 8410MPNL

ASEA BROWN BOVERI AF460-30-11 USPP AF4603011

RELIANCE ELECTRIC 45C-322 USPP 45C322

YASKAWA ELECTRIC JANCD-SV02B NSPP JANCDSV02B

ALLEN BRADLEY 1326AB-B520F-21-K5 NSPP 1326ABB520F21K5

Siemens 6ES5 103-8MA02 6ES51038MA02

Siemens CONTROLLER CARD 6ES928-3UB12

SIEMENS 6ES5-374-1KH21 USPP 6ES53741KH21

SIEMENS 6ES5-942-7UB11/6ES5942-7UB11 CPU MODULE XLNT

Siemens 6ES5 755-2CA11 NSFP 6ES57552CA11

Siemens 6ES5 312-5CA11 6ES5312 6ES53125CA11

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

Rev 1.1 SuperMicro H8DAE-2 Bulk Pack MB Support Dual Core CPU

Texas Instruments 2587678-8008

Spirent Adtech 400308A AX/4000 ATM DS1 Interface

VMware 2U Server 4x Six-Core Istanbul 2.6GHz 128GB RAM

Siemens C79458-L2197-A1

Modicon AS-T984-101

Schneider Modicon AUTOMATION DEP 218/AS-BDEP-218

Schneider Modicon AS-8535-000 AS8535000 High Density Connector

Schneider Modicon AS-BADU-205 ASBADU205 Analog Input LNC

Schneider Modicon AS-B805-016 115VAC Input Module ASB805016

Schneider Modicon PLC PC-0984-381 AS-9584-000

Schneider Modicon AS-S482-500 S-Pack AS-IS

SCHNEIDER 6728-042.270385 DAP216 OUTPUT MODULE XLNT

Sharp JW-234N Input Module 32POINT 12/24VDC 4.5MA High Speed

RELIANCE 57C416/0-57416 REMOTE I/O COMM MODULE NIB

Siemens 6ES7 322-5GH00-0AB0 OUTPUT MODULE 16DO 24-48VU

SIEMENS SINUMERIK 6FC5247-0AA16-0AA1 6FC52470AA160AA1 NIB

NUMATICS 239-1514 DEVICENET COMMUNICATION MODULE

SIEMENS SIMODRIVE 611 6SN1118-0DJ21-0AA1

SIEMENS SINUMERIK OP012 6FC5203-0AF02-0AAL Membrane Keypad

SIEMENS HANNIFIN 6F-C6L-1-BN-B USPP 6FC6L1BNB

AllenBradley1771-OBD/BOutputModule

ALLEN BRADLEY SLC500 BASIC MODULE 1746-BAS C 1746BAS C

ABB PLC MODULE PM581-ETH MODULES

York Liquid Chiller LCH10W-45B _ LCH10W45B _ LCH1OW-45B _ LCH1OW45B

[eh.shop] Water Quality Controller Dissolved Oxygen controller from Korea

MODICON AS-584L-231 NSFP AS584L231

ALLEN BRADLEY 1395-A70N-D2-P10-X1 USPP 1395A70ND2P10X1

GRAHAM 130AW5 NSPP 130AW5

GE FANUC IC3600SHPB1E1 USPP IC3600SHPB1E1

SIEMENS 6SE6-430-2AD32-2DA0 NSFP 6SE64302AD322DA0

SIEMENS 6AV3-627-1QK00-0AX0 NSFP 6AV36271QK000AX0

ALLEN BRADLEY 1494V-DR622-A NSFP 1494VDR622A

Siemens 6ES5 922-3UA11 -- 6ES59223UA11

Siemens S5 6ES5 955-3LF41 POWER SUPPLY UNIT 5V 8 AMP

SIEMENS 6ES5-482-8MA11 USPP 6ES54828MA11

Siemens 6ES5 430-8MC11/6ES5430-8MC11 INPUT MODULE NIB

Siemens S5-100U 6ES5 931-8MD11 - FREE SHIPPING

Siemens DCS Module 6DS1703-8RR

SCHNEIDER TSXDMZ28DR TSX MICRO PLC I/O MODULE QUANTITY

Square D 8803-PS01

SIEMENS 6ES5312-3AB12 SIMATIC S5 INTERFACE MODULE 6ES53123AB12

WE SHIP SAME CISCO WS-C3750G-24PS-S CATALYST 3750G-24PS SWICTH 1 YR WARRA

SIEMENS 6GK7342-2AH01-0XA0 CP342-2 6GK7 342-2AH01-0XA0

Siemens TP27 6AV3 627-1NK00-2AX0 Touchscreen Glass

Schneider Modicon TSX AS WBXT 201 Bus Extension Cable

Schneider Modicon AS-BDAU-204 ORIGINAL BOX Compact Analog OUT ASBDAU204

Schneider Modicon AS-B814-001 NSFP ASB814001

Schneider Modicon PROGRAMMABLE CONTROLLER 884 AS-884A-311

Schneider Modicon AS-P190-212

Schneider Modicon AS-BDAP-210 8-Point Isolated Output Module NIB

SCHNEIDER TSXDSY16T2 OUTPUT MODULE TSXDSY16T2

SIEMENS 6ES7 321-1BH02-0AA0 INPUT MODULE 6ES73211BH020AA0

Samsung MMCRE28GTDXP-MVB01 128GB 1.8

SIEMENS DRMC-11-51 4720 POWER METER OPERATOR INTERFACE GOOD TAKEOUT

SIEMENS SINUMERIK 810 BOARD 6FX1126-1AA01

SHIMADZU CBM-10A COMMUNICATIONS BUS MODULE

SIEMENS 6SN1146-1AB00-0BA1 6SN1 146-1AB00-0BA1 SIMODRIVE 611 Infeed Module

SIEMENS 6SN1111-0AA00-1EV0 6SN11110AA001EV0 80 KW SIMODRIVE

SIEMENS 6FC5114-0AA02-0AA0 6FC51140AA020AA0 version E

ALLENBRADLEYLIGHTEDPUSHBUTTONOPERATORINTERFACE120VAC2705-P22J3

ALLEN BRADLEY X1494V-L1 NSFP X1494VL1

ABB DSQC 249A 3HAA 3563-AGA, Rectifier, Remanufactured

ADI-TSSOP -ADG1636BURZ IC CHIP good quality

(A13) 1 GOULD MODICON AS-506P-002 REV C23 MEMORY MODULE A13

INDRAMAT TWM1.1-100-300-W1/115 NSFP TWM11100300W1115

YASKAWA ELECTRIC CIMR-F7U40371E USPP CIMRF7U40371E

FANUC A20B-0007-0010 USPP A20B00070010

EUROTHERM CONTROLS TC3041/AC/03/100A/120V/220V140/120/4MA20/PA/0/UDR/3D/IND/V2/0

RELIANCE ELECTRIC DPS1A NSFP DPS1A

ORMEC MAC-B200F/K1A NSPP MACB200FK1A

PHOENIX DIGITAL OCM-CTN-13-P-D-ST-ACV NSFP OCMCTN13PDSTACV

Siemens 6ES5 451-7LA21 6ES54517LA21

Siemens 6ES5-923-3UA11 USPP 6ES59233UA11

SIEMENS 6ES5-420-4UA12 USPP 6ES54204UA12

Siemens 6ES5 451-7LA11

Siemens S5 6ES5 431 8MA11 6ES54318MA11

Siemens 6SL3 211-0AB17-5UB1 6SL3211-0AB17-5UB1

Siemens 6ES7 331-1KF01-0AB0 6ES7331-1KF01-0AB0 SM331 Analog Input

Spectrum Controls 8000STC-222

NEHB442ASP-N POWERLINK AS POWER INTERFACE MODULE

WS-X4516 Cisco Supervisor Engine V 4516 Control processor

Siemens 6ES7 952-0KF00-0AA0 6ES79520KF000AA0

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

Reliance 14C310U

Schneider Modicon GROUPEAS-HDTA-200 NNB

Schneider Modicon AS-B266-500 USPP ASB266500

Schneider Modicon AS-S290-011 NSPP ASS290011

Schneider Modicon AS-B862

Schneider Modicon AS-B804-116 115VAC Output ASB804116

Modicon MM-16MP-001 Interface Panel AS-040A-003

SIEMENS S5 6ES5464-8ME11 Analog Input Module

SIEMENS 6ES5 482-4UA11 DIGITAL I/O MODULE

SIEMENS S5 6ES5 456-4UA12 Digital Output Module

SIEMENS 6FC5210-0DA20-1AA0 6FC5 210-0DA20-1AA0 SINUMERIK 840D MMC 103 Version B

SIEMENS SINUMERIK 840DE NCU 561.4 6FC5356-0BB14-0AA0 NIB

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

SIEMENS SIMODRIVE 611 BOARD 6SN1118-0DJ21-0AA1NIB

SIEMENS 6FC9320-5DB00 6FC93205DB00 Fast Shipping

Advantech PCA-6114P4-C REV.C1

ALLEN-BRADLEY 1771-OB PLC DC OUTPUT MODULE 8 POINT REFU

ABB ADVAC 15kV 1200A AA251777000000P Vacuum Circuit Breaker 5 cyc 15 kV 1200 Amp

ADEPT 10332-48712 PROCESSOR MODULE 040 IDE

6SA8831-5EF40 issue A SIEMENS AC-Supply DRIVE SIMOVERT VC Simovert USV/UPS

960 Altera EPM7064STC44-7 IC

STROMBERG SAFT-164-AIO USPP SAFT164AIO

CUTLER HAMMER 92-01815-03 USPP 920181503

CARRIER HK50AA020 USPP HK50AA020

NEMATRON CORP IWS1634R4 USPP IWS1634R4

MICROSTAR LABORATORIES DAP2400E USPP DAP2400E

FISHER ROSEMOUNT 3095MA3CA0013AA00NABS5 NSPP 3095MA3CA0013AA0

Siemens 6ES5 242-1AA32 -- 6ES52421AA32

Siemens 6ES5-470-4UC12 USPP 6ES54704UC12

SIEMENS 6ES5-180-3AA11 USPP 6ES51803AA11

SIEMENS S5 Interface Module 6ES5 318-8MB12

Siemens 6ES5 315-8MA11 6ES5315 8MA11

Siemens 6ES7901-1BF00-0XA0 TP27 Download Cable FreeShip

SIEMENS touch panel 6AV3627-1QL01-0AX0 TP27-10

Siemens 6ES5431-7LA11

iPhone Android Samsung iPod Bluetooth Interface module Volvo car kit VOL01A3

YOSHIMURA PIM2 PERIPHERAL INTERFACE MODULE HONDA CRF250R 2010-11

Siemens 6ES7 134-4GB01-0AB0 6ES7134-4GB01-0AB0

Siemens OEM-OP37 6AV3 637-7AB16-0AM0 Membrane Keypad

Parker AXL-DRIVE

Schneider Modicon AS-B875-111 Analog Input B877-111 ASB875111

Schneider Modicon AS-521P-007 USPP AS521P007

Schneider Modicon AS-M484-204 USPP ASM484204

Schneider Modicon AS-8535-000 NSPP AS8535000

Schneider Modicon 16 POINT 115V OUTPUT MODULE AS-B804-016 LOT OF 3

Schneider Modicon DEP210/AS-BDEP-210 INPUT MODULE NIB

SIEMENS TI TEXAS INSTRUMENTS 505-4332 INPUT MODULE

Schneider/Telemecanique Inverter ATV312HU15N4 NIB

Siemens SIMULATOR MODULE INPUT/OUTPUT 6ES5-788-8MA11

Siemens 4700-BDRMC3-11HN Power Meter Software Ver 2.3.0.4 White Digital Readout

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

CISCO WS-SVC-CMM COMMUNICATION MEDIA MODULE

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5357 #2ZP

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 [3]

ADVANTECH PCA-6103P2VX Rev.B1

Allen-Bradley 2711-T9C1 PanelView 900

ABB 3HAC022104-002 PC Board Flash Disk

Accuray 64844-001 64844001 Process Interface Board CSQ

A200M6CX CUTLER HAMMER SIZE 6 NON REVERSING STARTER - - (D)

810A16AB ALLEN BRADLEY

SIEMENS 6ES5-948-3UA12 USPP 6ES59483UA12

ASEA BROWN BOVERI 57360001-KG USPP 57360001KG

ALLEN BRADLEY 8600-BP8D USPP 8600BP8D

MEASUREX 05325100 USPP 05325100

HONEYWELL 51304487-150 NSPP 51304487150

ALLEN BRADLEY 150-B24NBDA-J1 NSFP 150B24NBDAJ1

SAFELINE 2813189 FNFP 2813189

Siemens 6ES5-375-1LA61 USPP 6ES53751LA61

SIEMENS 6ES5 451-7LA11 OUTPUT MODULE 6ES54517LA11 6ES5-451-7LA11 REPAIRED

SIEMENS 135U 6ES5 524 3UA13

Siemens PLC 6ES5-340-3KB42/6ES53403KB42

Siemens 6ES7 314-1AG13-0AB0 6ES7314-1AG13-0AB0 in Box

Siemens PLC 6ES5-421-8MA11 6ES54218MA11 6ES5421-8MA11

PWR-4000-DC 4000W DC POWER SUPPLY FOR CATALYST 6500/7600 1YR - ASK 4 Q

GSM/GPRS Modem Pool 16 Ports USB interface Wavecom Module AT Commands Q2403A

Tripp Lite PS/2 Server Interface Module

Siemens 6AV3627-1QL01-0AX0 LCD Display

Siemens Inverter Card 6SE7 090-0XX84-0FJ0

Modicon SW-DO5T-0TA

Schneider Modicon Discrete Input Relay AS-BDEP-210 ++ ++

Schneider Modicon AS-PRTU-252 AC Pwr Sply Ext Temp ASPRTU252

Schneider Modicon AS-E480-904 USPP ASE480904

Schneider Modicon ASWBXT201 Compact Primary Rack AS-WBXT-201

Schneider Modicon AS-B357-001 ASB357001 N90

Schneider Modicon OUTPUT MODULE AS-B820-000

Schneider TSXMFP032P Mem Card

Schneider Modicon TSX PCU1030 TSXPCU1030 PLC Cable

SiemensSinumerik6FC5403-0AA20-1AA06FC54030AA201AA0

SIEMENS 6DC1-006-1BC/6DC1006-1BC CIRCUIT BOARD NIB

SIEMENS Communication Submodule 6DD1688-0AE0 SS5 SURPLUS - Orig. Box

GE/General Electric Communication Module IC600CB516/B

SIEMENS Simodrive LT Modul 80A 6SN1123-1AA00-0DA0

SIEMENS SINUMERIK 6FC5203-0AF02-0AA0 Membrane Keypad fast shipping

SIEMENS Neptune 500 Gallon Chemical Tank with 4 metering Pumps

Allen-Bradley Panelview 1200 Operator Interface 2711-KC1

5KV 200A INDOOR/OUTDOOR MINI LOAD INTERRUPTER LI SWITCH

ABB YM110001SF BOARD ABB PFVK 105A YM110001-SF

A06B-0315-B201#7008 FANUC SERVO MOTORS REMANUFACTURED

75 HP 364TS ODP ELECTRIC MOTOR 3600 PREMIUM Efficient for HVAC or Compressors

RELIANCE ELECTRIC 57552-D USPP 57552D

ALLEN BRADLEY 20BD125A3NNNANC0 USPP 20BD125A3NNNANC0

ALLEN BRADLEY 1756-L55M12 NSFP 1756L55M12

GRAHAM 85-0200-00 NSPP 85020000

WAUKESHA 015-UI USPP 015UI

TELEMECANIQUE VZ3-IM1500M1207 NSFP VZ3IM1500M1207

GE FANUC IC600CP600 USPP IC600CP600

Siemens 6ES5-182-3KB62 USPP 6ES51823KB62

SIEMENS 6ES5 375-0LA15 6ES53750LA15

SIEMENS 6ES5-956-0AA12/6ES5956-0AA12 POWER SUPPLY NIB

Siemens 6ES5 866-0MC23-0Z USPP 6ES58660MC230Z

Siemens 6ES5 521-8MA22 6ES5521-8MA22

Siemens LOGO! power 6EP1 331-1SH01 6EP1331-1SH01

RELIANCE ELECTRIC I/O PROCESSOR MODULE 45C200A

Texas Instruments 305-35T

Spirent Adtech AX/4000 400323 Utopia Interface

VIPA SLIO Remote IO Starterkit 800-1DK10 -Profibus Cable Connectors ET 200S

Siemens C98043-A1260-L1-11

Modicon AS-W190-200

Schneider Modicon Automation AS-P810-000 ASP810000 Power Supply Module

Schneider Modicon AS BDAU 208 OUTPUT MODULE DAU208 NIB

Schneider Modicon AS-BADU-S9 USPP ASBADUS9

Schneider Modicon AS-B829-116

Schneider Modicon PROGRAMMABLE CONTROLLER PC-F984-385 PROM ID AS-C950-114 1008

Schneider Modicon AS-S911-801 ASS911801 Processor

Schneider Graphic Terminal XBTOT4320

SEALED Allen Bradley 1771-IFE /C 1771-1FE PLC-5 Analog Input Module

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Siemens 6ES7 135-4FB00-0AB0 Analog Output Module