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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。

MODICON AS-P453-641 USPP ASP453641

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ALLEN BRADLEY 194R-ND250P3 NSPP 194RND250P3

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553VIC10100 MODICON MONITORS CRT REMANUFACTURED

ABB Teach Pendant 3HAB-5386-1/1 #34232

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715-031752-206 CAP LOWER ELECTRODE 6"

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ALLEN BRADLEY 1398-DDM-020 NSPP 1398DDM020

GENERAL ELECTRIC DS3800NPSE1E1G USPP DS3800NPSE1E1G

TOSHIBA VT130H1U-4220-B0H USPP VT130H1U4220B0H

SYMAX 8030-CRM-510 NSFP 8030CRM510

FISHER ROSEMOUNT 1151AP8S52B1M3 USPP 1151AP8S52B1M3

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Siemens LOGO! 6EP1 322-1SH41 6EP1322-1SH41

Rigol Function/Arbitrary Waveb Generator DG2041A 40M

Telemecanique ZB2-BW031

Smema Interface Module 60.009.037

VWIC-2MFT-E1 CISCO 2-PORT RJ-48 MULTIFLEX TRUNK E1

SIEMENS C73040-A51-C154-02-85 J2 Worldwide

Modicon AS-T584-006

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Schneider Modicon AS-B885-002 USPP ASB885002

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Schneider Modicon PC-0984-381 CPU Module AS-9584-000 w/AS-M380-004 & AS-E381-902 NICE

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Omron C500-LK003 3G2A5-LK003 Communication Module

SIEMENS SIMODRIVE 462018.7925.1150A6SN1123-1AA00-0CA1 BOARD

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SIEMENS Marble Products International Fossil Coaster Set of 6 FC101

AllenBradley1771-ODDPLC-5Isolated120VACOutputModule

Allen Bradley SLC-500 Output Mod. 16-Point 1746-OA16

ABB PCB BOARD DSQC 328A 3HAC 17970-1

Zygo 7003A & 7015 & 7012

, factory sealed SIEMENS 6FX1132-0BA01

MODICON AM-S980-810 USPP AMS980810

ALLEN BRADLEY 1394C-SJT10-D USPP 1394CSJT10D

GETTYS 110-0134 NSFP 1100134

GE FANUC 44A398722-G03 USPP 44A398722G03

SIEMENS 6SC9111-2AF2 USPP 6SC91112AF2

SICK OPTIC ELECTRONIC PLS101-112 USPP PLS101112

ACCURAY 725782 USPP 725782

Siemens 6ES5 900-7AA11 6ES59007AA11

Siemens S5 6ES5 385-8MB11 High Speed Counter Module

SIEMENS 6ES5-464-8ME11/6ES5464-8ME11 ANALOG INPUT MODULE NIB

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

Square D 8030 RRK-200

Siemens 6ES5 318-8MA12 Simatic S5 Interface Module

WE SHIP SAME CISCO WS-C3750X-24S-E SWITCH 1 YR 3750X-24S

Siemens 6GK7 243-2AX01-0XA0

SIEMENS TP177B 6AV6 642-0BA01-1AX1 Touch Glass + Protective film

Schneider Modicon AS-BDEP-210 Discrete Input NIB

Schneider Modicon ASBDEP210 8 Pt 120VAC Input Module AS-BDEP-210 Electric

Schneider Modicon AS-B806-032 NSFP ASB806032

Schneider Modicon Panelmate plus MM-PMC3-100 110/230 V As Is Parts Or Repair

Schneider Modicon AS-MBPL-001 USPP ASMBPL001

Schneider Modicon AS-B885-002 ASCII Basic Module

Schneider/Modicon PLC Output Module TSXDSZ32R5 NIB

Siemens 6ES7 321-1FF01-0AA0 DIGITAL INPUT MODULE PART TYPE SM 321 8 POINT

SANS DIGITAL MR4UT 4-bay hot-swap hardware RAID storage

Siemens Handwheel Sinumerik 6FC9320-5DC00 5V nice

SIEMENS Sinumerik 802S 802C Mechanical Keypad 2 month warranty

SIEMENS 6DD1661-0AB0 COMMUNICATION MODULE

SIEMENS 6SN1145-1AA01-0AA2 SIMODRIVE 611 INFEED MODULE 10 25kW UNREGULATED

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

SIEMENS 6FC5130-0CA01-0AA0 USPP 6FC51300CA010AA0

AllenBradleyPanelview2711-B6C2X/A2711B6C2X

ALLEN BRADLEY X-51343 NSFP X51343

ABB DRIVES,INDUSTRY OY CONVERTER UNIT ACS504-100-5,CONTROL UNIT ACS50Y-YYY-Y-00P

AdeptSix 300 Robot

(8538) 1 ALLEN BRADLEY 803-B6 ROTARY CAM LIMIT SWITCH

INDRAMAT TRANS-01.00 USPP TRANS0100

WINSMITH 4CV USPP 4CV

FANUC A16B-0160-0950 NSPP A16B01600950

ELME MSS0004000 USPP MSS0004000

RELIANCE ELECTRIC 86466-26R USPP 8646626R

OMRON C500-NC211 USPP C500NC211

OMRON CVM1-CPU01-EV2 USPP CVM1CPU01EV2

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Siemens S5 6ES5 420-7LA11

Siemens 6SE7090-0XX84-0FF5 DP Communication Card

Siemens 6ES7 331-7SF00-0AB0 SIMATIC SM 331 ANALOG INPUT

Southcon 8000-279

MOORE PRODUCTS 15222-1 INTERFACE MODULE NIB

WS-X4648-RJ45-E CISCO Catalyst 4500E Series Line Card Switch 48 ports

SIEMENS 6ES7 421-1FH20-0AA0 6ES7421-1FH20-0AA0 NIB

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Reliance 0-57412

Schneider Modicon Kodak Retina Reflex III with -Kreuznach Retina-Xenon f1.9/50mm AS-IS

Schneider Modicon AS-B258-101 NSPP ASB258101

Schneider Modicon AS-P964-000 NSFP ASP964000

Schneider Modicon AS-B838-032 24 VDC 32-Point Output Module

Schneider Modicon AS-B802-008/ASB802008

Modicon MM-PMA2-300 PanelMate Plus P/N 92-00808-02

Siemens Simatic 505-4116 Low VDC Input Module

SIEMENS 6ES5-305-7LB11 NSPP 6ES53057LB11

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Advantech Motherboard PCA-6104 NIB

ALLEN-BRADLEY 1771-OD16 120V AC Isolated Output Module

ABB ACS60101205000B1200000

ADDIDATA PA8000 NSPP PA8000

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SQUARE D PHF2036 NSPP PHF2036

CONTROL TECHNIQUES SP4401 USPP SP4401

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NACHI AUXL112A USPP AUXL112A

MEASUREX 08562100 USPP 08562100

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YOSHIMURA FOR POLARIS XP900RZR 2011

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Oriental Motor E3769-122 / E3570-424

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ACCURAY 086266-001 SYS SCANNER VME CONTROL BOARD CARD VMEBUS 84698

A100615 Agilent E4406A Transmitter Tester 7MHz-4.0GHz (Opt. B78 BAC)

80C04-CR2 Tektronix Optical Sampling Module

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LORAIN PRODUCTS ES281CMB NSFP ES281CMB

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