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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(gè)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(jìn)行提純.其工藝流程圖如下:
　2、本工藝的特點(diǎn)和難點(diǎn)
　　醋酸乙烯的生產(chǎn)是個(gè)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(qiáng),一個(gè)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(gè)系統(tǒng)的波動(dòng)可能帶垮整個(gè)系統(tǒng).,因?yàn)槠洚a(chǎn)品醋酸乙烯的濃度要求非常高,達(dá)到99.9%以上,因此對(duì)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(fù)0.5度,醋酸蒸發(fā)器液位要求達(dá)到正負(fù)1%,還有乙炔的流量非常不穩(wěn)定,可控性不太好.這些都對(duì)控制的精度提出了很高的要求.
　　3、工藝對(duì)控制系統(tǒng)的要求
　　a、實(shí)現(xiàn)各個(gè)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(dòng)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(fù)0.5度,醋酸蒸發(fā)器液位要求達(dá)到正負(fù)1%,
　　b、必要的遙控措施,對(duì)突發(fā)事件如停電等，系統(tǒng)應(yīng)采取相應(yīng)的保護(hù)措施，確保在緊急情況下或需要的時(shí)候?qū)σ恍╆P(guān)鍵的控制點(diǎn)(閥門、馬達(dá)等)實(shí)施遙控。
　　c、配置必要的報(bào)警和聯(lián)鎖。
　　d、重要參數(shù)的記錄和方便地查閱其實(shí)時(shí)趨勢和歷史趨勢。
　　e、可隨時(shí)監(jiān)測有關(guān)單元的有關(guān)參數(shù)或重要設(shè)備的運(yùn)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(gè)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(gè)監(jiān)控站,和兩個(gè)現(xiàn)場控制站.穩(wěn)定性.兩個(gè)現(xiàn)場控制站也采取了熱備用冗余,任何一個(gè)出現(xiàn)了故障,自動(dòng)切換到另外一個(gè)上正常運(yùn)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(hào)的光電隔離,所有的現(xiàn)場信號(hào)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(bào)表打印機(jī)一臺(tái)。

FANUC A16B-1211-0092 USPP A16B12110092

ACCURAY 725782 USPP 725782

Siemens 6ES5 420-7LA11 6ES54207LA11

Siemens 6ES5-305-7LB11 MODULE 6ES53057LB11

SIEMENS 6ES5 464-8ME11 6ES5464-8ME11

Siemens 6ES5 374-0BA11 Memory Submodule 23512

Siemens 6ES5 760-0AB11/6ES5760-0AB11 RESISTOR NIB

SIEMENS 6ES5 393-0UA14

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REMAN Allen Bradley 1756-L62 /B ControlLogix Processor 4MB

Texas Instruments 305-01T

Spirent Adtech AX/4000 400301 ATM OC-3c Single Mode Interface

VMETRO VME Midas M120R-16D2 with I/O module DPIO-LI/32k/16bit

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Modicon AS-T984-107

Schneider Modicon AUTOMATION DEP 216 AS-BDEP-216 DISCRETE INPUT 16X24 VDC

Schneider Modicon TSX DISCRETE OUTPUT MODULE AS-BDAP-217

Schneider Modicon AS-BADU-206 NSFP ASBADU206

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Schneider Modicon POWER SUPPLY AS-P840-000 ASP840000 115/230V

Schneider Modicon AS-S908-000 REMOTE I/O PROCESSOR GOOD TAKEOUT

Schneider 140ACI03000 140ACI03000R NIB

SELECTRON DIC-701 8PT INPUT MODULE 24VDC NIB

Reliance 57401 57401-1B Digital I/O Module NIB

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SIEMENS SINUMERIK 800 6FX1126-1AA03 6FX11261AA03

NOTIFIER CCM-1 COMMUNICATION CONVERTER MODULE CCM 1

SIEMENS Simodrive 611 6SN1118-0NJ01-0AA1 Free Ship

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ALLENBRADLEY1771-OAD/C120VOUTPUTMODULE

ALLEN BRADLEY SLC-500 1746-OA8 SERIES A OUTPUT MODULE

ABB POWER 6TERMINAL MEDIUM VOLTAGE GROUND TEST DEVICE 3000A SWITCHGEAR B204772

YSI Incorporated 2700D Select 230v Biochemistry Analyzer U

+GF+ George Fischer 317 Diaphram Valve PN: 175 317 057

MODICON AS-9003-180 NSFP AS9003180

ALLEN BRADLEY 1395-B63-D1-PZ USPP 1395B63D1PZ

HARMONIC DRIVE 472448-1 NSFP 4724481

GE FANUC IC3600STDC1 NSFP IC3600STDC1

SIEMENS 6SE7-022-6TP70 USPP 6SE70226TP70

SIEMENS 6AV7722-1BC10-0AB0 USPP 6AV77221BC100AB0

ALLEN BRADLEY 1746-NIO4V FNFP 1746NIO4V

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Siemens S5 6ES55353MA12 6ES5-535-3MA12 COMM PROCESSOR

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Schneider PLC Remote I/O Interface Module 140CRA93100

Square D 8884 SMM-1000

SIEMENS 6ES5-312-5CA21 INTERFACE MODULE 6ES53125CA21

WE SHIP SAME CISCO WS-C3750-48PS-S CATALYST 3750-48PS SWICTH 1 YR WARRANT

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Schneider Modicon TSX Compact Module DEP218/AS-BDEP-218

Schneider Modicon AS-BDAU-202 /Schneider Analog Out ASBDAU202

Schneider Modicon AS-B814-108 NSFP ASB814108

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Schneider Modicon AS-P452-012

Schneider Modicon AS-BDAP-210 Output Module DAP-210 Model 042279065 EXCELLENT

SCHNEIDER TSXDSY08R4D OUTPUT MODULE 8 RELAY TR.BLK NNB

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SALE Inb i7-2700K 8G 1T60G SSD HD7770/1G Overclock Gaming/Business Computer

Siemens Drive 6 RA 2620-6DV55-0 6RA26206DV550 D380/35 6-RA-2620-6DV55-0

SIEMENS SINUMERIK 810 I/O BOARD 6FX 1124-6AA

Send Us Your Best Offer90 Day warranty on all parts

SIEMENS 6SN1-146-1AB00-0BA1 USPP 6SN11461AB000BA1

SIEMENS 6SC6500-0NA02 SIMODRIVE BOARD EXCELLENT CONDITION

SIEMENS 6FC5112-0EA03-0AA0 USPP 6FC51120EA030AA0

Allen-BradleyElectromechanicalContactOutputModule1771-0W16/B

ALLEN BRADLEY X-137733 NSPP X137733

ABB DSQC 328A 3HAC 17970-1 DIGITAL I/O UNIT 24VDC

ADJUSTABLE SPEED DRIVE 303D0628

(ABB)DCS Freelance2000 Spare parts DAI 04 good in condition for industry use

INDUSTRIAL DEVICES B8962-FK1B-AAAA-FF NSPP B8962FK1BAAAAFF

YASKAWA ELECTRIC CIMR-P5U20370F NSFP CIMRP5U20370F

FANUC A860-0055-T061 USPP A8600055T061

EUROTHERM DRIVES 590L-0105-9-1-0-0-2-0-0750-310-012-400-0-00-00-00-00-000 USPP 5

Returns: Accepted within 7 days

PCI 78-FP USPP 78FP

POLYCOM 500-0111-03 USPP 500011103

Siemens 6ES5 454-4UA14 -FS- 6ES54544UA14

Siemens 6ES5-924-3SA11 USPP 6ES59243SA11

SIEMENS 6ES5-420-7LA11 USPP 6ES54207LA11

Siemens 6ES5 451-8MR12 Relay Output Module

Siemens S5 6ES5 431-8MA11 8x24V DIGITAL INPUT

SIEMENS 6SL3352-6BE00-0AA0 ping worldwide

Siemens 6ES7 322-8BF00-0AB0 -FS- 6ES73228BF000AB0

Spectrum Controls SCC-1 CABLE

NI NATIONAL INSTRUMENTS PXI-8331 MXI-4 188535C-01 INTERFACE MODULE

WS-SVC-SSL-1-K9 CISCO SSL MODULE FOR CATALYST 6500

Siemens 6ES7 972-0AA1-0XA0 6ES7972-0AA1-0XA0

Siemens S7 400 CPU 6ES7 414-2XG03-0AB0 6ES74142XG030AB0

Reliance 45C1

Schneider Modicon GROUPE AS-W510-003 NSPP ASW510003

Schneider Modicon AS-B274-001 USPP ASB274001

Schneider Modicon AS-S481-100 USPP ASS481100

Schneider Modicon AS-B872-011

Schneider Modicon AS-B805-000 INPUT MODULE 16 POINT

Modicon Gould B550 PLC AC Output Module

SIEMENS S5 6ES5 464-8ME11 Analog Input Module

Siemens 6ES5 470-4UB12 6ES54704UB12

SIEMENS S5 6ES5 450-8MB11 Digital Output Module

SIEMENS 6FC5247-0AA00-0AA2 PLC HOUSING 13 AMP 57 V SINUMERIK 840D

SIEMENS SinumerikSimodriveSimatic & servo motor REPAIR

SIEMENS 6SN1118-0AA11-0AA0 6SN1 118-0AA11-0AA0 SIMODRIVE 611-A Control Unit QTY

SIEMENS SIMODRIVE 611 6SN1145-1BA02-0CA2 NIB

SIEMENS 6FC9-320-3CH USPP 6FC93203CH

Advantech PCA-6159 REV.A2 w/ CPU and RAM Free Shp

Allen-Bradley 1771-OAD AC 12-120V Output Module

ABB AF750-30-22 CONTACTOR 48-130 VDC 50/60 Hz

ADEPT 30340-40100 CHASSIS MV-10A BASE

6SE3223-5DH40 Siemens Midimaster Vector Drive 460 V 6SE32235DH40

a 2000 infinion PEB2060N V4.5

SYMAX 8010-SFI-510 NSFP 8010SFI510

CUTLER HAMMER CPS200208YSG NSFP CPS200208YSG

CIMATRIX 910-2 USPP 9102

NEMATRON CORP IWS-2623-001 USPP IWS2623001

MITSUBISHI A3M-CPU USPP A3MCPU

FORNEY 34550601 NSFP 34550601

Siemens 6ES5 243-1AA12 6ES52431AA12

Siemens 6ES5-470-7LA13 NSFP 6ES54707LA13

SIEMENS 6ES5-263-8MA11/6ES5263-8MA11 COUNTER XLNT

SIEMENS S5 MODULE 6ES5 400 7AA13

Siemens 6ES5 420-3BA11 MODULE MAKE OFFER

SIEMENS 6ES7-972-0AA01-0XA0 #2

Siemens TP170A 6AV6545-0BA15-2AX0 Touch Glass ping Worldwide

Siemens 6ES5441-7LA11

iSimple PESWICAN2 Steering Wheel CAN Databus Interface Module

YOSHIMURA PIM2 PERIPHERAL INTERFACE MODULE KAWASAKI KX250F 2012

Siemens 6ES7 151-1AA04-0AB0 6ES7151-1AA04-0AB0 FreeShip

Siemens OP Program Cable 6XV1440-2KH32

Parker SV2500S

Schneider Modicon AS-B875-101/ASB875101 Analog Input

Schneider Modicon AS-521P-009 USPP AS521P009

Schneider Modicon AS-M485-004 Memory Board

Schneider Modicon AS-884A-101 AS884A101 ivs

Schneider Modicon 24 VDC OUTPUT TRUE HIGH AS-B824-016

Schneider Modicon DTA 202/AS-HDTA-202 Secondary Subrack TSX Compact PLC

SIEMENS TI 505-4332 INPUT MODULE 24V DC INPUT C/W TB

SEALED SIEMENS CENTRAL PROCESSING UNIT 6ES7-414-2XG04-0AB0

SIEMENS SIMATIC TOUCH PANEL TP27 MONO OPERATOR INTERFACE 6AV3627-1NK00-2AX0

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

SIEMENS Sinumerik 840C CPU Int/Face. 6FC5110-0CB01-0AA0 E Stand D

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SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 #2ZH

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 [2]

Advantech PCA-6145B NO CPU OR RAM

Allen-Bradley 2711-T9C1 PanelView 900

ABB 3HAC2206-1 IRB2400 M2000 Robot Axis 2 Servo Motor with Pinion -

Accuray 83156-002 83156002 PC Board CSQ

A201K6CX, Size 6, Model J, Three Phase

81104A Agilent with 81105A 2 units Pulse Generator

SIEMENS 6ES7-318-2AJ00-0AB0 USPP 6ES73182AJ000AB0

ASEA BROWN BOVERI 57770163 NSFP 57770163

ALLEN BRADLEY MPL-B4530F-SJ22AA FNFP MPLB4530FSJ22AA

MEASUREX 51305517-100 USPP 51305517100

HONEYWELL 80363975-150 NSPP 80363975150

ALLEN BRADLEY 1756-L1 NSPP 1756L1

SHAPE ELECTRONICS Z5709 USPP Z5709

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SIEMENS 6ES5 451-8MD11 6ES54518MD11

SIEMENS 6ES5 430-7LA12 6ES5430-7LA12 2 pcs

Siemens PLC 6ES5-375-0LD31/ 6ES53750LD31 32K Ram Memory Module

Siemens 6ES7 315-1AF01-0AB0 CPU315

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PWR-3660-AC AC POWER SUPPLY FOR CISCO 3660

GSM/GPRS Modem Pool 16 Ports USB interface Wavecom Module AT Commands Q2406

TTC FIREBERD 41440 T1/FT1 INTERFACE ADAPTER MODULE FOR ANALYZERS

Siemens 6AV6 542-0AG10-0XA0 6AV6542-0AG10-0XA0 MP270B

Siemens K-TP178 6AV6 640-0DA11-0AX0 Protective Film

Modicon SW-LNET-195

Schneider Modicon DEP 216/AS-BDEP-216 Discrete Input Card PLC 16x24vdc TSX

Schneider Modicon ASBDEP218 Module AS-BDEP-218 ASBDE

Schneider Modicon AS-E680-904 Cartridge

Schneider Modicon GOULD / AS-B551-001 INPUT MODULE

Schneider Modicon AS-B559-000

Schneider Modicon OUTPUT MODULE AS-BDAP-218 ~

Schneider TWDLCAA24DRF Telemecanique MODICON TWIDO NIB

Schneider Modicon TSX08ED12F8

SiemensSimaticsS5DigitalInput/OutputModule6ES5420-7LA1132DC24V

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SIEMENS EA-12 ANALOG OUTPUT MODULE 6DD1642-0BC0

GE Fanuc Series Six IC600CB536 Communications Module Type 2

SIEMENS Simodrive LT-Modul Int 2X15A _ 6SN1123-1AB00-0AA0 _ 6SN1130-1AE11-0AB0

SIEMENS SINUMERIK 6FC5203-0AF02-0AA1 no box Free Ship

SIEMENS Moore QLCCM12AAN PLC CCM Critical Control Module 16808-1/OC QuadLog

Allen-Bradley PanelView 1200 Operator Interface 2711E-T12C6

5SGA2025H0003 MFG ABB MODULE 1 PCS

ABB YTEA 250-8, , YTEA2508,

A06B-0317-B074#7008 FANUC SERVO MOTORS REMANUFACTURED

75 HP 365TS 3600 Explosion Proof Electric Motor

RELIANCE ELECTRIC 5G0251S USPP 5G0251S

ALLEN BRADLEY 2711E-K10C15 USPP 2711EK10C15

ALLEN BRADLEY 1756-PAR2 FNFP 1756PAR2

HAMMOND CVHW5000C NSFP CVHW5000C

WESTINGHOUSE 292B335A14 USPP 292B335A14

TEXAS INSTRUMENTS PLC 555-1103 NSPP 5551103

GENERAL ELECTRIC 44B321983-G01 NSPP 44B321983G01

Siemens 6ES5-184-3UA21 USPP 6ES51843UA21

SIEMENS 6ES5 375-0LA41 6ES53750LA41

SIEMENS 6ES5-981-0GA11 NSFP 6ES59810GA11

Siemens 6ES5921-3WB11 CPU Module 6ES59213WB11 6ES5-373

Siemens 6ES5 927-3KA13 6ES5927-3KA13

Siemens LOGO! TD text display 6ED1055-4MH00-0BA0 in Box

Reliance Electric Automax Remote I/O Interface Module 57C554

Texas Instruments 405-LIC

Spirent Adtech AX/4000 401318 Frame Relay DS3 Interface

VIC3-4FXS/DID CISCO 4-PORT VOICE INTERFACE CARD FXS AND DID

SIEMENS C98043-A1601-L1

Modicon AS-W194-015

Schneider Modicon Automation AS-MBKT-085 ASMBKT085 Connector Adapter

Schneider Modicon AS-516P-006 Prom PC Board CPU

Schneider Modicon AS-BDAO-012 USPP ASBDAO012

Schneider Modicon AS-B838

Schneider Modicon Remote I/O Processor AS-P451-622 (2976)

Schneider Modicon ASSY POWER SUPPLY P/N AS-P120-000

Schneider Lexium LXM 17D MHDA1028N00 Servo Drive

SEALED Allen Bradley 1762-IQ16 /A 1762-1Q16 MicroLogix Input Module

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MRV COMMUNICATIONS EM2003-1GE/SX/M 1-PT 1000BASE-SX UPLINK MODULE COUIACH

SIEMENS SIMODRIVE 611 6SN1124-1AA01-0FA