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一、系統(tǒng)描述
　　醋酸乙烯是一種十分重要的工業(yè)原料,其市場非常廣闊.它的生產(chǎn)過程主要分為兩個大的過程: 合成和精餾.前者是發(fā)生化學(xué)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(xué),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(chǎn)是個塔體非常多的系統(tǒng),調(diào)節(jié)回路眾多,系統(tǒng)的關(guān)聯(lián)性非常強,一個參數(shù)的控制的好壞直接影響到其他參數(shù)的控制的成敗.一個系統(tǒng)的波動可能帶垮整個系統(tǒng).,因為其產(chǎn)品醋酸乙烯的濃度要求非常高,達到99.9%以上,因此對反應(yīng)溫度,以及流量等參數(shù)的控制要求非常平穩(wěn),合成反應(yīng)器的中溫要求170正負0.5度,醋酸蒸發(fā)器液位要求達到正負1%,還有乙炔的流量非常不穩(wěn)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(tǒng)的要求
　　a、實現(xiàn)各個單元操作的集中監(jiān)控，包括：溫度、壓力、流量、液位等物理量的監(jiān)測與控制。動態(tài)參數(shù)檢測、控制必須準(zhǔn)確、可靠。合成反應(yīng)器的中溫要求170正負0.5度,醋酸蒸發(fā)器液位要求達到正負1%,
　　b、必要的遙控措施,對突發(fā)事件如停電等，系統(tǒng)應(yīng)采取相應(yīng)的保護措施，確保在緊急情況下或需要的時候?qū)σ恍╆P(guān)鍵的控制點(閥門、馬達等)實施遙控。
　　c、配置必要的報警和聯(lián)鎖。
　　d、重要參數(shù)的記錄和方便地查閱其實時趨勢和歷史趨勢。
　　e、可隨時監(jiān)測有關(guān)單元的有關(guān)參數(shù)或重要設(shè)備的運行情況。
　　f、控制系統(tǒng)操作簡單，參數(shù)設(shè)置、調(diào)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(chǎn)工藝流程，修改和打印各種有關(guān)參數(shù)。
　2、FB-2000NS系統(tǒng)硬件配置
　　本控制系統(tǒng)采用了三個監(jiān)控站,和兩個現(xiàn)場控制站.穩(wěn)定性.兩個現(xiàn)場控制站也采取了熱備用冗余,任何一個出現(xiàn)了故障,自動切換到另外一個上正常運行.也增加了系統(tǒng)的可靠性和穩(wěn)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(shù)也都采取了熱備用..所有的模擬量都采取了和現(xiàn)場信號的光電隔離,所有的現(xiàn)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。

Schneider Modicon AS-B360-001 ASB360001 Relay Output NIB FS

Schneider Modicon AS8534000Connector AS-8534-000

Schneider Modicon AS-B805-016 REV. L 115V 16PT INPUT MODULE ASB805016 REPAIRED

Schneider Modicon AS-P120-000 ASP120000

Schneider Modicon ASW808002 AS-808-002

Schneider Modicon AS-B804-016 115v Output Module 16pt

Schneider Modicon DEP 220/ AS-BDEP-220 Input Module

Schneider Telemecanique ATV31HV30N4A NIB

SCHNEIDER INPUT MODULE TSXDEY32D2K

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

SIEMENS 6ES5-453-4UA12/6ES5453-4UA12 OUTPUT MODULE NIB

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

Mercedes W215 W220 R230 navigation communication module

SIEMENS Simodrive 6SN1123-1AA00-0DA1

SIEMENS SINUMERIK 840D/DE NCUBOX 6FC5247-0AA00-0AA2

SIEMENS /MOORE 39BCMNBN APACS BCM MODULE A5E00282273/05

ALLEN-BRADLEY SPILLPROOF KEYBOARD 6189-KBE1 GOOD

Allen Bradley SLC 500 1746-0B16 Series D Output Module

ABB ROBOTICS SERVO MOTOR 1FK6083-6AZ21-9ZZ9-Z S02

A06B-0147-B084#0075 FANUC SERVO MOTORS

0-49040-2

NH RESEARCH 1107095 NSPP 1107095

ALLEN BRADLEY 1756-L61S NSFP 1756L61S

ALLEN BRADLEY 1336E-BRF100-AA-EN-HA1-L4 USPP 1336EBRF100AAEN5

GENERAL ELECTRIC 9T23Q4000G22 USPP 9T23Q4000G22

SYMAX 8010-SFI-510 USPP 8010SFI510

SIEMENS A5E00159514 USPP A5E00159514

BENSHAW BIPC-300004-03 NSPP BIPC30000403

Siemens 6ES5 946-3UA22 6ES59463UA22

Siemens SIMATIC S5 6ES5-460-7LA13 ANALOG INPUT 6ES54607LA13

SIEMENS 6ES5-721-0BB00 USPP 6ES57210BB00

Siemens 6ES5 490-LB21 6ES54907LB21 Terminal Strip NIB

Siemens 6AV6 545-0CC10-0AX0 Touchscreen Protective Film

Siemens laser Lasermodul rot 1 mW 03058336, FP-65/1LF

S2600IP4 Server Board Inb

Telemecanique GV2-P03

SIEMENS S5 6ES5 300-5CA11 IM 300 Interface Module

Wago 758-875/000-111 WAGO-I/O-IPC-C10 e Linux 2.6 codesys visu PROFIBUS dp mstr

Siemens 6SE7041-3TL84-1JC0

Modicon AS-M680-108

Schneider Modicon AS-B875-102 I/O Analog High Speed 8CH

Schneider Modicon ASB838032 PERFECT CONDITION 24 VDC Output Module AS-B838-032

Schneider Modicon AS-B872-000 USPP ASB872000

Schneider Modicon NEZA PLC TSX08CD12F8AS in Box Free Ship

Schneider Modicon CPU Module M AS-C484-065 ~Repaired Sur.~

Schneider Modicon AS-HDTA-202/ASHDTA202 Secondary rack OFFERS

SCHNEIDER MAGELLIS XBTF024610 XBT F024610 OPERATOR PANEL

SIEMENS 6ES5 431-8MA11 INPUT MODULE FACTORY SEALED

Rigol Function/Arbitrary Waveb Generators DG2041 40M with

SIEMENS A5E00159514 PANEL TOUCH SCREEN

SIEMENS Sinumerik Hand Wheel 6FC9320-5DC00

Reliance 57C-380 Communications Module DC5 Passive Tap

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SIEMENS SINUMERIK 840D/DE NCU 573.3 6FC5357-0BB33-0AE2 NIB

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AllenBradley2711E-T14C6PanelView1400eSeriesDRev.A

Allen Bradley TTL Output Module 1771-OGD WARRANTY

ABB IRB 2400 SER 24-22330 ROBOT S4C PLUS CNTRLR TEACH PENDANT W/ MATCHED SET

Advanced Fiber Solutions AF-DR515-C0 850/1300nm Multimode Compact OTDR,

(Q10-6) 1 NIB TELEDYNE 1903-2000-01 ENHANCED DISPLAY PANEL Q10-6

MEASUREX 51305430-100 USPP 51305430100

ALLEN BRADLEY 1336F-BRF200-AA-EN-HCS2-L4E NSFP 1336FBRF200AAEN1

GE FUJI 6KDV5088R9X9 NSFP 6KDV5088R9X9

FANUC A16B-2200-0450 USPP A16B22000450

SIEMENS 6EC1110-0A NSFP 6EC11100A

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SIEMENS 6SE9-2114-DA40 NSFP 6SE92114DA40

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Siemens S5 6ES5700-0LA12 4 SLOT RACK

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Square D 8030 COM-221

PepperlFuchs VAA-4E4A-KE-ZE/E2 AS-Interface sensor/actuator module

WS-C2960-24TC-S CISCO 2960-24TC SWITCH- W/1YR - WSC296024TCS Fast

SIEMENS 6ES7-331-7PF00-0AB0 6ES7331-7PF00-0AB0

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Scharer 19pc10-1

Schneider Modicon ASM84A002 Perfect Controller Module AS-M84A-002

Schneider Modicon AS-B553-101 USPP ASB553101

Schneider Modicon AS-W801-012 USPP ASW801012

Schneider Modicon AS-BMOT-201/ASBMOT201

Schneider Modicon AS-B828-016 5 VTTL Output TH ASB828016

Modicon AEG MM-PMC2-100 Industrial Computer XLNT

SIEMENS DIGITAL INPUT MODULE 6ES5421-8MA12 SEALED

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

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STANDARD COMMUNICATIONS CELLULAR MODULE CMM7700-511

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Advantech TPC-650 display panel

ALLEN-BRADLEY 160-P1 PROGRAMMING TERMINAL KEYPAD ""

ABB BAILEY SYMPHONY CONTROLS DIGITAL IMASI23 ANALOG INPUT SLAVE MODULE 88255

ADEPT TECH 10332-48712

(2) ALLIS-CHALMERS AIR CIRCUIT BREAKERS LA-600F 600 VOLTS 600 AMPS

INDRAMAT DDS2.1-W/200-D USPP DDS21W200D

TELEMECANIQUE TSX-RAM-51216 USPP TSXRAM51216

EUROTHERM DRIVES 590C/0350/6/3/0/1/0/00/000 USPP 590C035063010000

CUTLER HAMMER DG325NRK USPP DG325NRK

RELIANCE ELECTRIC 0-52837 USPP 052837

MODICON AS-S911-801 USPP ASS911801

IRCON MR-2002-18F USPP MR200218F

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Lucent 12A 3 CNPQACAAXX Adapter Interface Module

Yamaha Motif Rack ES

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Reliance 0-51821

Schneider Modicon AS-B801-000 ASB801000 Spare Slot Filler LNC

Schneider Modicon AS-9507-000 USPP AS9507000

Schneider Modicon AS-P421-112 POWER SUPPLY NICE

Schneider Modicon AS-B550-101 USPP ASB550101

Schneider Modicon AS-884A-311 Processor Module AS884A311 UPC

Modicon Square D XBT P022110 XBTP022110 Oper Interface

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Siemens 6ES7 331-7SF00-0AB0 SIMATIC SM331 ANALOG SEALED

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SIEMENS SIMODRIVE 6SN1123-1A00-0AA0 VER C

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ADVANTECH SOM-A2552

ALLEN-BRADLEY 2711-B5A2 Panelview 550 Series F ! WOW !

ABB ACF60100166000H1200901 AC Drive 600V WOW

Acterna JDSU TTC 2000 TestPad w/ T-BERD 2310 w/ VT100 STS1 PRI DS1 DS3 TBERD

6ES7147-2AA01-0XB0 Brand , Factory Sealed,

8595EM Agilent / HP, EMC Analyzer, OPT 004/010/8ZE, Calibrated, 6 MO.

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BALDOR 827710 FNFP 827710

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BARBER COLMAN 41AA-22002-200-1-00 USPP 41AA22002200100

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SIEMENS S5 6ES5 441-7LA11

Siemens S5 Memory Submodule 6ES5 375-0LD31 29850

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HORNER GENIUS INTERFACE MODULE HE300GEN100J HE-300GEN100J

WEIDMULLER RS-SCI INTERFACE MODULE

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Omron C1000H-CPU01-E2V1

Schneider Modicon AS-J470-000 USPP ASJ470000 PROGRAMMING ADAPTER

Schneider Modicon #AS B828-016 OUTPUT MODULE 5VDC 16 PT

Schneider Modicon AS-H827-209 USPP ASH827209

Schneider Modicon MODICON/ AS-B805-016 INPUT MODULE 115VAC XLNT

Schneider Modicon AS-H827-103

Schneider Modicon Subrack AS-HDTA-200

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Schneider Telemecanique TSXP57452

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FieldServer FS-RA-CLX-BAS-406 BACnet/IP Communication Module PS56-BAS-406 XLNT

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Allen-Bradley AB 2706-E43J64B1 DataLiner DL40 PLC Operator Interface

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AC TECH VFD2 M15150B

A06B-6050-H005 FANUC SERVO AMPLIFIER

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ALLEN BRADLEY 2711P-K10C4D1 USPP 2711PK10C4D1

INDRAMAT TDM2.1-030-300-W1 USPP TDM21030300W1

YOKOGAWA DX204-2-2/BT11M1 NSFP DX20422BT11M1

XYCOM 98500-001 NSFP 98500001

LENZE E94ASHE0044 USPP E94ASHE0044

Siemens 6ES5-300-5CA11 NSFP 6ES53005CA11

SIEMENS 6ES5 420-4UA14 -FS- 6ES54204UA14

SIEMENS S5 6ES5 188-3UA12 Rack Excluding Power Supply

Siemens CPU ControllerS5 6ES5 943-7UB11 23530

SIEMENS 6ES7 212-1BB21-0XB0 6ES72121BB210XB0 CPU 222

SIEMENS OP25 OP25/A 6AV3525-1EA01-0AX0 Membrane Keypad

RELEASE SuperMicro X9DRT-HF MB ※Check W/ Us for Availability FIRST※

Texas Instruments 560-2120

Tektronix 80A03 TCA Probe Interface Module

TV One C2-8210 Corio2 DVI-U/3G/HD/SD-SDI Switcher

Siemens DCS Module 6DR2803-8C NIB

Modicon MM-FM94-000

Schneider Modicon TSX Compact Subrack DTA 202 - AS-HDTA-202

Schneider Modicon ASB875102 TESTED Analog INPUT Module AS-B875-102

Schneider Modicon AS-BDEP-297 NSFP ASBDEP297

Schneider Modicon AS-BDEP-220 INPUT MODULE ASBDEP220

Schneider Modicon -AS-884A-301

Schneider Modicon DTA 200/AS-HDTA Subrack rack back plane 5

schneider Telemecanique Limit Switch XCE-154 NIB

Schneider Discrete Input Module AS-BDEP-216 DEP 216 WARRANTY

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

SIEMENS 6ES5451-4UA14 DIGITAL OUTPUT MODULE NIB-FS

SIEMENS 6DD1610-0AG1 SIMADYN D MEMORY MODULE IN BOX

MERCEDES BENZ COMMUNICATION MODULE A 211 820 81 26

SIEMENS Simodrive 6SN1123-1AA01-0FA1 LT-MODUL INT.200A Version A

SIEMENS SINUMERIK 840D 6FC5210-0DA00-1AA16FC5203-0AB12-0AA1 MMC-100 HMI

SIEMENS /MOORE 16267-1-4 MODULNET INTERFACE CARD 1626714

ALLEN-BRADLEY SLC 500 PLC 1747-ASB ADAPTER WITH INPUT /OUTPUT MODULES

Allen Bradley Safety Relay 700-ZBR100AZ1 700ZBR100AZ1

ABB S4C 3HNE00313-1 Teach Pendant -

A06B-0148-B075 FANUC SERVO MOTORS REMANUFACTURED

0-58706-4

OMRON NT600M-DT211 USPP NT600MDT211

ALLEN BRADLEY 1756-M3 NSFP 1756M3

ALLEN BRADLEY 1336-RFB-80-C USPP 1336RFB80C

GENERAL ELECTRIC DS200LPPAG1AAA USPP DS200LPPAG1AAA

TAYLOR ELECTRONICS 1734FC14200A NSFP 1734FC14200A

SQUARE D 3050-EGW-1 NSFP 3050EGW1

COMPUMOTOR 2100-2-P USPP 21002P