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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。

FANUC A06B-6058-H221 USPP A06B6058H221

INDRAMAT CLM01.3-X-0-2-0-FW USPP CLM013X020FW

SOFTING PB-MMOBIL/UG USPP PBMMOBILUG

MICRO MOTION CMF050M322NRAUEZZZ NSFP CMF050M322NRAUEZ

KOLLMORGEN IND M-405-B-A3 USPP M405BA3

Siemens 6ES5 701-1LA12 6ES57011LA12

Siemens 6ES5-441-7LA11 NSFP 6ES54417LA11

SIEMENS 6ES5 491-0LB11 6ES54910LB11

SIEMENS S5 6ES5 308-3UB11 6ES53083UB11 IM308B

Siemens S5 6ES5 490-7LB21 Front Connector

Siemens 6ES7 645-1DK40-0AE0 6ES7 645-1DK40-0AE0 ping Worldwide

Siemens S5 PLC Cable 6ES5712-8AF00 6ES5 712-8AF00

POWER PROCESS 512-K8705 TEMPERATURE CONTROLLER 2OUT 2AL

Honeywell Ademco 4100SM Serial Interface Module

WAGO 289-447 INTERFACE MODULE WITH SUB MINI D-MALE CONN. 25 POLE 289447

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Siemens LOGO! 230RC 6ED1 052-1FB00-0BA5 in Box, Seal Intact,

Omron 3G2A5-OD213

Schneider Modicon AS-P120-000 AC Power Converter 115/230VAC

Schneider Modicon LEVEL-3 16K 3CARD CHASSIS 584 AS-584A-351

Schneider Modicon AS-H819-103 NSFP ASH819103

Schneider Modicon Gould/ AS-H827-209

Schneider Modicon AS-BDAU-202 ANALOG OUTPUT MODULE ASBDAU202

Schneider Modicon RELAY MODULE AS-B266-501 ~

TELEMECANIQUE HMI XBT-N400 in Box

SCHNEIDER TELEMECANIQUE OTB1E0DM9LP ETHERNET INTERFACE MODULE

SIEMENS/TI/CTI 505-6208 8CH ANALOG OUTPUT MODULE XLNT

Siemens 6AV6 545-0BA15-2AX0 6AV65450BA152AX0 Panel

SIEMENS Sinumerik 6FC5111-0CA73-0AA1 Terminal Block

GE FANUC COMMUNICATION MODULE IC693CMM301 IC693CMM301M Free Ship

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC5247-0AA00- #7

SIEMENS SINUMERIC 840D 6FC5357-0BB23-0AE0

SIEMENS HP LPQ 1000 Printer Ribbon HP C3207A - HP LPQ1000

Allen-Bradley Color PanelView Plus 1000 Operator Interface

AB PANELVIEW PLUS 1250, #2711P-RN6, SER-B, 30 ,

AC Motor Invertor - 50 HP - 600 Volt - Three Phase Input

A06B-0614-B031#0100 FANUC DC SERVO MOTORS REMANUFACTURED

750' wake forest 4/0 4/0 4/0 2/0 Cable Wire Direct Burial XLP USE URD 600 Volt

RELIANCE ELECTRIC S-6R9009 USPP S6R9009

ALLEN BRADLEY 5250-LP4 NSFP 5250LP4

ALLEN BRADLEY 20AD027A3AYNANNN USPP 20AD027A3AYNANNN

INDRAMAT MAC071C-0-NS-3-C/095-A-0/S001 USPP MAC071C0NS3C095B

YASKAWA ELECTRIC CIMR-G5M50301F NSFP CIMRG5M50301F

WESTINGHOUSE 293B414A11 USPP 293B414A11

INDUSTRIAL DEVICES NH-105A-24-MF1-MT1-DB-032 USPP NH105A24MF1MT1DB

Siemens 6ES5246-4UA31 6ES5 246-4UA31 SIMATIC S5 IP246I Positioning Module

SIEMENS 6ES5 377-0AA11 6ES53770AA11

SIEMENS Interface Module Coupler 6ES5 312-5CA21 V2 Appears to be

Siemens ANALOG INPUT MODULE PLC CARDS5 6ES5 464-8MF11 6ES5464-8MF11

SIEMENS 6ES7 133-1BL01-0XB0 6ES7133-1BL01-0XB0 ET200L

Siemens MTT95A12N 95A/1200V THYodul MTT 9 A 12 N

Reliance 57405-E Drive Analog I/O Module 57405E

Texas Instruments 505-4608

Subaru Outback Legacy Factory OEM USB Media Interface Module H621SAJ210

UBR7200-NPE-G1 CISCO UBR NPEG1 ENGINE W/ 512MB D/64MB F 3 GE/FE/E

Siemens COROS OP15 6AV3515-1EB30 ping Worldwide

Modicon D4-043506657

Schneider Modicon #NAME

Schneider Modicon 91-01254-00

Schneider Modicon AS-BDEP-210 NSFP ASBDEP210

Schneider Modicon ASBDAP216N A120 IO DC OUT 16 pt AS-BDAP-216N

Schneider Modicon -AS-506P-F12

Schneider Modicon DAP-220/AS-BDAP-220 Discrete Combination ASBDAP220 NIB

Schneider Soft Starter ATS48D38Q 18.5KW

SCHNEIDER MODICON TSX PREMIUM SINK CONNECTION INPUT MODULE TSXDEY64D2K

Quantum 8pt Thermoc Input Module model 140 ATI 030 00

Siemens 6ES54547LB11 6ES5-454-7LB11 Output Module 24VDC 2.0A in Sealed Box

SIEMENS OFFER & WIN 6FX1111-5AA00 Sinumerik Rack

MITSUBISHI A1SJ71UC24-R4 COMMUNICATION MODULE GOOD TAKEOUT

SIEMENS SIMODRIVE 6SN1123-1AA00-0DA1 / 6SN1118-0DM33-0AA0

SIEMENS SINUMERIK CHASSIS 810 M GA2 6FC3541-OAC-Z DC24 USMT CNC MILL MACHINE

SIEMENS /MOORE 61H F/R RELAY BOOSTER NNB

Allen-Bradley Versaview 6189-RDT10C

Allen Bradley SLC 500 1746-OA8 SER D Output Module

ABB ROBOTIC DRIVE 3HAB8101-6/11A

A06B-0147-B075#0076 FANUC SERVO MOTORS REMANUFACTURED

0-2000 mkVb 1% Micro flux meter Veber meter F191 an-g. Agilent

NACHI AUXL-111C USPP AUXL111C

ALLEN BRADLEY 1756-L55M14 FNFP 1756L55M14

ALLEN BRADLEY 1336-B020-ECE-FA2 NSPP 1336B020ECEFA2

GENERAL ELECTRIC 531X140CCHADM2 USPP 531X140CCHADM2

SQUARE D TE4XLHPGCLDCSCDS NSFP TE4XLHPGCLDCSCDS

SIEMENS 6SE7-021-3TP50-Z NSFP 6SE70213TP50Z

BALLUFF BIS-C-601-023-650-03-KL1 NSFP BISC60102365003K

Siemens 6ES5 944-7UB21 6ES59447UB21

Siemens Simatic S5 6ES5 943-7UA22 6ES59437UA22

SIEMENS 6ES5-705-0AF00 USPP 6ES57050AF00

Siemens 6ES5 490-7LA11 NSFP 6ES54907LA11

SIEMENS 6AV3627-1QL01-0AXA Touch Glass w/ Film FreShip

Siemens Inverter BOP Operator 6SE7090-0XX84-2FK0 NIB

Samsung MLC SSD MMCRE28G5DXP-0VB SATA Hard Drive MMCRE28G5MXP-0VB

Tadiran TL-2300

SIEMENS INTERFACE MODULE 6ES5312-5CA21

F/W REV 3.006 PKG DATE 09/23/2010

Siemens 6SE7032-2FC85-0JA0 / C98043-A1696-L1

Simens HMI 6AV6 648-0AC11-3AX0 6AV66480AC113AX0 6AV6648-0AC11-3AX0 NIB FreeShip

Schneider Modicon AS-BDAP-216N ASBDAP216N DC Output

Schneider Modicon AS-B873-001 ANALOG INPUT MODULE ASB873001

Schneider Modicon AS-B846-002 USPP ASB846002

Schneider Modicon AS-B809-016

Schneider Modicon Board AS-HDTA-200

Schneider Modicon AS-H827-209 HSG PRIM 27 in SYSBUS CHASSIS NIB

Schneider Modicon PanelMate Plus 1000 MM-PM1030SC 92-01686-00

SIEMENS 6ES5 464-8MF21 ANALOG INPUT MODULE

RME HAMMERFALL HDSP AES-32- PROAUDIOSTAR

Siemens Apogee MBC Module PTM6.2Q250-M Digital Output Module

SIEMENS Sinumerik DMP Module Modul 6FC5111-0CA01-0AA0

RELIANCE ELECTRIC 57416-S REMOTE I/O COMMUNICATIONS MODULE 57C416

SIEMENS CONTROLLER CARD 6SN1118-1NH00-0AA2

SIEMENS XVGA box replace monitor to LCD 6FC4600-0AR50 6FC5103-0AB01 SC-1200

SIEMENS 6FC5-110-0BA01-1AA0 NSFP 6FC51100BA011AA0

AllenBradley2711-K9C9PanelView900OperatorInterfaceSeriesCRev.L

ALLEN BRADLEY VersaView 1200P TOUCH SCREEN OPERATOR INTERFACE 6181P-12TSXPH

ABB INTERRUPTER ASSEMBLY 539D19302 FOR 345KV CIRCUIT BREAKER

Advanced Energy Mercury 10013 Match, P/N 27-256558-00

(no #) Cervis Remote Control Unit TM70/1.13 With Cable

MEASUREX 08591501 USPP 08591501

ALLEN BRADLEY 1336E-B040-AE-EN USPP 1336EB040AEEN

GE FANUC IC697CSE784 USPP IC697CSE784

FANUC A16B-1210-0030 NSPP A16B12100030

SIEMENS 6AV7-802-0BA02-1AC0 NSFP 6AV78020BA021AC0

RELIANCE ELECTRIC 419437-D USPP 419437D

SIEMENS 6FC5-110-0DB03-0AA2 USPP 6FC51100DB030AA2

Siemens 6ES5 470-4UC13 6ES54704UC13

Siemens 6ES5-947-3UR21 USPP 6ES59473UR21

SIEMENS 6ES5-440-8MA21/6ES5440-8MA21 OUTPUT MODULE NIB

Siemens 6ES5 923-3UC11 COORDINATOR MODULE NIBBNO

Siemens S5 6ES5-318-8MB13

Siemens C98043-A1203-L23-06

Siemens 6ES5 470-4UC13 -FS- 6ES54704UC13

Square D 8030 CC-15

Omron C500-II002 Expansion Rack Interface Module

WS-C3550-12T CISCO SWITCH 10-10/100/1000 PORTS 2 GBIC PORTS: EMI

Siemens 6ES7316-2AG00-0AB0

Siemens Simovert 6SE7016-1TA61

Remote Display RD-300

Schneider Modicon AS-P120-125 SEALED 125VDC Supply ASP120125

Schneider Modicon AS-B548-000 USPP ASB548000

Schneider Modicon AS-W600-006 NSPP ASW600006

Schneider Modicon AS-BDEP-216 16 Point Input Module

Schneider Modicon AS-B826-032/ASB826032 Output Module OFFERS ACCEPTED

MODICON ANALOG OUTPUT MODULE AS-B872-100

SIEMENS EM221 DI 8XDC24V 6ES7 221-1BF00-0XA0 Digital Input Module

Sharp JW-31LM I/O MODULE 32-SLAVE STATIONS 345.6KB 504 POINTS

Siemens Operator Interface 6SE32900XX878BF0 23884

SIEMENS Sinumerik 6FC3251-1AC-Z 810T Controller

SUPPLYNET COMMUNICATIONS TANKLINK 3810 DIGITAL CONTROL CONTROLLER MODULE LLC

SIEMENS 6SN1118-1NH01-0AA1 6SN11181NH010AA1

SIEMENS Lt-Modul INT. 50A Simodrive 6SN1123-1AA00-0CA0

SIEMENS 6FC5248-0AF20-2AA0 MOUNTING BRACKET

Advantech Remote Data Acquisition Module ADAM-4013 NIB

ALLEN-BRADLEY 1746-0A16 SLC500 SERIES D OUTPUT MODULE

ABB BAILEY SYMPHONY CONTROLS DIGITAL IMASI23 ANALOG INPUT SLAVE MODULE 88205

ADEPT TECH 10332-00714 USPP 1033200714

(1) 4 Fanuc Motors and (1) Mitubishi Motor

INDRAMAT DDC01.2-N200A-DA02-01-FW USPP DDC012N200ADA020

TELEMECANIQUE LA9-B102 NSFP LA9B102

ELDEC 5250062 USPP 5250062

CUTLER HAMMER A13GN0 USPP A13GN0

PRATT & WHITNEY DU205E USPP DU205E

MODICON AS-B260-001 USPP ASB260001

INDRAMAT CPUB01-00 USPP CPUB0100

Siemens 6ES5 314-3UA11 6ES53143UA11

Siemens 6ES5-530-3LA12 USPP 6ES55303LA12

SIEMENS 6ES5-374-1FH21 NSFP 6ES53741FH21

Siemens 6ES5 312 3AB11 INTERFACE MODULE

Siemens 6ES5-700-2LA11 Rack 6ES57002LA11 F204

SIEMENS 6GK7-443-5FX02-0XE0 6GK7443-5FX02-0XE0 NIB FS

Siemens TP270 6AV6 545-0CC10-0AX0 Touchscreen Glass

Siemens 6ES5941-7UA12

Lincoln Electric K336 L6580-1 REM PB Interface Module

Yaskawa 87350-11000 PLC Module 8735011000 XLNT

Siemens 6ES7 223-1PH20-0XA0 6ES7223-1PH20-0XA0

Siemens OP37 OP370 6AV3637-7AB16-1AM0 Membrane Keypad

Reliance 0-51378-12

Schneider Modicon AS-B804-116 Output Module 115VAC

Schneider Modicon AS-9003-180 NSFP AS9003180

Schneider Modicon AS-P371-002 NSPP ASP371002

Schneider Modicon AS-B351-001 INPUT MODULE Q1-5

Schneider Modicon AS-884A-101 Processor Module AS884A101 UGC

MODICON TELEMECANIQUE MAGELIS OPERATOR INTERFACE TXB TF024510E BENT METAL

SIEMENS Simatic S7 6ES7 336-1HE00-0AB0 PLC Analog Input Module

Siemens 6ES7 332-5RD00-0AB0 -FS- 6ES73325RD000AB0

Siemens Simatic Output Module TI305-15T

Siemens 9300 9300DC-100-ZZZZA Power Meter Display ION Profibus Access

SIEMENS Sinumerik Module 6FX1120-5BA01 E Stand F & 02

SIEMENS Simodrive 6SN1118-0DM21-0AA0 6SN11180DM210AA0

SIEMENS SIMODRIVE 6SN1123-1AA00-0CA1/0CA0

SIEMENS Display 6FC5203-OAB10-0AA0

Advantech Remote Contact/Digital Input ADAM-4053

Allen-Bradley 2711C-T6C Ser B PanelView C600 Color Touchscreen NIB

ABB 64513591 MAIN CIRC. INTERFACE NINT-72C SEALED

Acterna JDSU DSAM-3500B Digital CATV Meter DSAM 3500 w/ Home Cert Secure Sync

6ES5470-7LA13 SIEMENS Analog Output Module

853-012500-003 DETECTOR, EDGE ASSY TYPE

SIEMENS 6SE7-022-7EP70 USPP 6SE70227EP70

BAILEY CONTROLS IMMFP-03 NSPP IMMFP03

ASEA BROWN BOVERI YT204001-FSI1 USPP YT204001FSI1

MODICON AM-R911-000 NSFP AMR911000

INDRAMAT MDD112D-N-020-N2L-130PB0 USPP MDD112DN020N2L11

ASEA BROWN BOVERI YB560103-CH USPP YB560103CH

VIDEO JET 358160-E NSFP 358160E

Siemens 6ES5-451-4UA12 NSFP 6ES54514UA12

SIEMENS 6ES5 700-2LA12 6ES57002LA12

SIEMENS S5 6ES5 377-0AB31 6ES53770AB31 NIOB

Siemens S5 CONNECTOR 6ES5 490-8MB21 6ES54908MB21

Siemens 6ES7 972-0BB41-0XA0 6ES7972-0BB41-0XA0 NIB

Siemens S7-200 EM231 6ES7 231-0HC20-0XA0 EM 231

Siemens 3TB4012-0B

HONEYWELL TC-CCR012 REDUNDANT NET INTERFACE MODULE

Waters Millipore System Interface Module Detector

Siemens 6ED1 052-2HB00-0BA3 6ED1052-2HB00-0BA3 FreeShip

Siemens LOGO! 6ED1 052-1HB00-0BA6 NIB + LOGO USB Cable

Omron 3G2A9-AL001

Schneider Modicon AS-J878-000 MODEM MODULE ASJ878000

Schneider Modicon PROGRAMMABLE CONTROLLER AS-584L-231 W MEM

Schneider Modicon AS-H827-100 ASH827100 Fast Shipping

Schneider Modicon LOT OF 3 AS-P120-000 POWER SUPPLY MODULES

Schneider Modicon AS-C921-100

Schneider Modicon AS-J890-101 ASJ890101 I/O Processor

Telemecanique MODICON TWDLCAA16DRF

Schneider Telemecanique TM2DRA8RT MODICON PLC

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Siemens 6AV3627-1QK00-2AX0 6AV3 627-1QK00-2AX0 SIMATIC TP27-6 Touch Panel