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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(chǎng)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(cè)與控制。動(dòng)態(tài)參數(shù)檢測(cè)、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(shì)和歷史趨勢(shì)。
　　e、可隨時(shí)監(jiān)測(cè)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(jiǎn)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(chǎng)控制站.穩(wěn)定性.兩個(gè)現(xiàn)場(chǎng)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(chǎng)信號(hào)的光電隔離,所有的現(xiàn)場(chǎng)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)。

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ALLEN BRADLEY 803-A12 NSFP 803A12

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VEEDER ROOT INTERSTITIAL SENSOR INTERFACE MODULE PN 329358-001

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AB Allen Bradley 1395 75 HP DC Motor Controller / Drive

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75 HP Rotary Phase Converter with DIGITAL Control and Starter

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XYCOM 9457-0238120011001 NSPP 945702381200110

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Texas Instruments 500-5032

Square D 8030 CRM255 SY/Max Interface Module in Box

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Modicon AS-W807-050

Schneider Modicon AS-BDAP-208 TSX Compact Discrete Output

Schneider Modicon B838 OUTPUT MODULE AS-B838-032

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Schneider Modicon AS-B885-101

Schneider Modicon /Gould AS-P452-012 Auxilliary Power Supply (UGC)

Schneider Modicon CABLE ASSEMBLY AS-W804-006 IN BOX

Schneider Modicon TSX08ED12F8

Schneider TSXAEY800 Input Module 8-Point

Redback PIM-500-E3 1 Port BNC E3 for SMS 500 90

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SIEMENS Eprommodul ASM Sinumerik 800 6FX1821-1BX13-4C

Mitsubishi Melsec AJ71C24 Computer Link PLC Communication Module AJ71-C24

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ALLENBRADLEY1746-NO8IANALOGOUTPUTMODULE1746NO8I1746-N08I

Allen Bradley SLC 500 DC Sink output module 1746-OV16 ser.C

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0020-23906 6" G-12 TIN W/B CLAMP RING

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GENERAL ELECTRIC 12JBCG53K6A USPP 12JBCG53K6A

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Siemens Simatic S5 6ES5 318-8MB13

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WATLOW 146D-1E1D-3100 TEMPERATURE CONTR 0-799'C 120VAC

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Schneider Modicon DTA 201 / AS-HDTA-201 SECONDARY SUBRACK 5 SLOT

Schneider Modicon AS-W960-012 NSFP ASW960012

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Schneider PLC Analog Output Module Part TSXASY800 NIB

Siemens 6ES5430-4VA13 Digital Input Module

Roland UA-1010 Octa-Capture Audio Interface Producer X2 Upgrade Bundle

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SIEMENS Sinumerik 840D/DE 1P 6FC5357-0BB34-0AA0

RELIANCE ELECTRIC NETWORK COMMUNICATIONS MODULE 57C404B

SIEMENS CNC 6SN1123-1AA00-0HA1 SIMODRIVE LT MODULE NIB

SIEMENS Siemen Simodrive Traeger Module 50mm 1P6SN11622AA000AA0

SIEMENS 6FC5110-0DB02-0AA2 6FC51100DB020AA2 version N

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ALLEN BRADLEY VERSAVIEW 1700M 6186-M17ALTR B TOUCHSCREEN LCD

ABB EMERSON DC DRIVE CONTACTOR EHDB 520 600 vdc 520 amps

Advanced Energy 6KW Power Supply Pinnacle Model

(L26-3) 1 GENERAL ELECTRIC 44A399771-G08 PC BOARD L26-3

LORAIN PRODUCTS ES371AMB USPP ES371AMB

ALLEN BRADLEY 1326AB-B730E-M2L NSFP 1326ABB730EM2L

GE FANUC IC3600APAB1 NSFP IC3600APAB1

FANUC A06B-6057-H015 USPP A06B6057H015

SICK OPTIC ELECTRONIC S30A-7011BA USPP S30A7011BA

RELIANCE ELECTRIC 0-57404-2B NSFP 0574042B

SIEMENS 1FT6034-4AK71-3AH1 NSFP 1FT60344AK713AH1

Siemens 6ES5 465-7LA13 6ES54657LA13

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Square D 8020 SCP-111

NOSSIEMENS ADDRESSABLE INTERFACE MODULE 500-699484 500699484 FS-TRI-S

WS-C6503 CISCO CAT 6503 CHASSIS 3 4RU

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Reliance 57C554

Schneider Modicon Dual AUTOMATION DEP216/AS-BDEP-216 In.Modules

Schneider Modicon AS-B371-001

Schneider Modicon Chassis AS-H819-103 - free ship

Schneider Modicon AS-BDAP-209 8PT OUTPUT MODULE

Schneider Modicon AS-B821-008 Input Module 10-60VDC 8POINT

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SIEMENS 6DS1302-8AB USPP 6DS13028AB

Siemens Output Module 6ES5451-4UA12 451-4UA12

SIEMENS SIMADYN OPERATOR PANEL 6DD1670-0AF0 IN BOX

Texas Instruments Remote Communications Module 560-2127 E19

SIEMENS 6SN1-118-0DK23-0AA0 DRIVE SIMODRIVE 611 DIGITAL CONTR LOOP H PERF

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Advantech PCM-3641 4-port RS-232 High-Speed Module FS

ALLEN-BRADLEY 1750-CA OUTPUT REGISTER MODULE SURPLUS

ABB Bailey Part No. YIEPAF02 Module Bailey 8613-22 Power Supply AC System

ADEPT TECH 10300-16500 USPP 1030016500

(#2934) Allen Bradley GuardMaster SafeZone Multizone Laser Scanner 442L-SFZNM

HONEYWELL TVMP-C0-80-AM0-E00-F10-0U000V-00 USPP TVMPC080AM0E00F1

TB WOODS WF2C4020-0N USPP WF2C40200N

DATAMYTE 953-07 USPP 95307

CONTROL TECHNIQUES UNI-2402 USPP UNI2402

PACIFIC SCIENTIFIC R67HENA-R2-NS-NV-00 NSFP R67HENAR2NSNV00

MODICON 92-00808-02 USPP 920080802

GETTYS DR-D005-001 NSFP DRD005001

Siemens 6ES5 308-3UB11 6ES53083UB11

Siemens 6ES5-524-3UA13 NSPP 6ES55243UA13

SIEMENS 6ES5-371-0AA51 MEMORY MODULE 6ES5-371-0AA51

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Siemens 6ES5-315-8MA11 I/O Buss Module

Siemens 6GK7 343-1EX11-0XE0 NIB

Siemens TP177B 6AV6 642-0BC01-1AX1 Touchscreen Glass

Siemens 6ES5700-8MA11

Kingspec Flash DOM Disk On Module 8GB/8G 44Pin Vertical IDE Interface PATA MLC

YASKAWA ELECTRIC JAMSC-B1075-1 USPP JAMSCB10751

SIEMENS 6ES7 222-1BF00-0XA0 6ES7222-1BF00-0XA0 FreeShip

SIEMENS OP270-6 6AV6542-0CA10-0AX1 Display Panel in Box

Red Lion GEM20000

Schneider Modicon AS-B824-000 PLC

Schneider Modicon AS-884A-101 CPU MODULE AS884A101

Schneider Modicon AS-P110-000 USPP ASP110000

Schneider Modicon AS-B233-501

Schneider Modicon AS-516P-006 Processor Board Rev C21 AIPR/UVG

Modicon XBTF024610 Magelis Operator Interface XBT F024610 24VDC PV: 20 V2.2 1850

Siemens Simatic S7-300 Analog Input module SM331 8x12BIT 6ES7331-7KF01-0AB0

Telemecanique Time Off Delay Block LA2 DT2 0,1-30s

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SIEMENS / TI 505-4616 DISCRETE OUTPUT MODULE

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Advantech PCM-3351F

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ABB 57520001-GZ PC BOARD 57520001GZ DSCA 180B

ACOPIAN R24W7AM USPP R24W7AM

AAT-AAT1102-M-T SOP-8 IC Good Quality,Original Pack

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SIEMENS 6RA7-000-0MV62-0 USPP 6RA70000MV620

ASTROMED IMCD-DDE3200 USPP IMCDDDE3200

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API CONTROLS PS-3303D-E NSPP PS3303DE

TELELINE MC12KH00 FNFP MC12KH00

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SIEMENS 6ES5 482-8MA12 6ES54828MA12

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Siemens 6ES7 450-1AP00-0AE0 6ES7450-1AP00-0AE0 NIB FS

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Price includes VAT-Good conditiongood working order

HONEYWELL 51304362-300 INTERFACE MODULE 51304362300

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Schneider Modicon AS-P464-002/ASP464002 Monitor with control

Schneider Modicon AS-S908-021 Remote I/O Processor REV. B - Refurbished

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