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一、系统描述
　　醋酸乙烯是一种十分重要的工业原料,其市场非常广阔.它的生产过程主要分为两个大的过程: 合成和精馏.前者是发生化学反映生成醋酸乙烯的过程, 后者则是将生成的醋酸乙烯通过学,物理过程来进行提纯.其工艺流程图如下:
　2、本工艺的特点和难点
　　醋酸乙烯的生产是个塔体非常多的系统,调节回路众多,系统的关联性非常强,一个参数的控制的好坏直接影响到其他参数的控制的成败.一个系统的波动可能带垮整个系统.,因为其产品醋酸乙烯的浓度要求非常高,达到99.9%以上,因此对反应温度,以及流量等参数的控制要求非常平稳,合成反应器的中温要求170正负0.5度,醋酸蒸发器液位要求达到正负1%,还有乙炔的流量非常不稳定,可控性不太好.这些都对控制的精度提出了很高的要求.
　　3、工艺对控制系统的要求
　　a、实现各个单元操作的集中监控，包括：温度、压力、流量、液位等物理量的监测与控制。动态参数检测、控制必须准确、可靠。合成反应器的中温要求170正负0.5度,醋酸蒸发器液位要求达到正负1%,
　　b、必要的遥控措施,对突发事件如停电等，系统应采取相应的保护措施，确保在紧急情况下或需要的时候对一些关键的控制点(阀门、马达等)实施遥控。
　　c、配置必要的报警和联锁。
　　d、重要参数的记录和方便地查阅其实时趋势和历史趋势。
　　e、可随时监测有关单元的有关参数或重要设备的运行情况。
　　f、控制系统操作简单，参数设置、调整方便，便于操作，人性化的操作界面。
　　g、操作员站显示整个生产工艺流程，修改和打印各种有关参数。
　2、FB-2000NS系统硬件配置
　　本控制系统采用了三个监控站,和两个现场控制站.稳定性.两个现场控制站也采取了热备用冗余,任何一个出现了故障,自动切换到另外一个上正常运行.也增加了系统的可靠性和稳定性.所有的模拟量输出都采取了热备用,还有重要的显示参数也都采取了热备用..所有的模拟量都采取了和现场信号的光电隔离,所有的现场信号均通过了安全栅隔离. DCS的硬件配置如下: FB-2001NS -4块,FB-2005NS-3块,FB-2010NS 16块 ,FB-2020NS 28块, FB-2030NS 1块 ,FB-2040NS-4块 FB-SC20NS/R14块,FB-SC14NS/R-4块,FB-SCNS14-8块.FB-SC30NS1块. FB-SC42NS-4块.另外，报表打印机一台。

UBE INDUSTRIES DDVC/HV-J1 USPP DDVCHVJ1

GENERAL ELECTRIC DLP3512BB USPP DLP3512BB

INDUCTOHEAT 14815-110 USPP 14815110

SQUARE D HU364DS USPP HU364DS

LEESON ELECTRIC CO 174749 USPP 174749

DODGE MR94903 USPP MR94903

Siemens 6ES5 100-8MA02 6ES51008MA02

Siemens 6ES5-464-8MD11 NSFP 6ES54648MD11

SIEMENS 6ES5 942-7UA13 6ES5942-7UA13 XLT

SIEMENS S5 6ES5-262-8MA13

Siemens TI PLC COMPARATOR 6ES5-461-8MA11 6ES54618MA11

Siemens 6ES7321-1BL00-0AA0 6ES7 321-1BL00-0AA0 NIB

Siemens Simovert Pulse Converter 6SE60 20-1BF00 6SE6020-1BF00 G32970-A0035-A204

Siemens 6ES5300-5CA11

HP/Agilent N5102A Digital Signal Interface Module

XpressKIT Interface and Bypass Modules from Directed Electronics XK05

Siemens 6ES5318-8MB12 6ES53188MB12

Siemens Modem 6ES7241-1AA22-0XA0

Omron CV500-II101

Schneider Modicon AS-BDAP-217 AS-BDAP-217 DC Output True Low NIB

Schneider Modicon AS-2802-000 USPP AS2802000

Schneider Modicon AS-J878-000 USPP ASJ878000

Schneider Modicon AS-509P-003 CNC Memory Board Rev A7 (AIND/UVG)

Schneider Modicon DTA200/AS-HDTA-200

Schneider Modicon /Schneider DTA-201 AS-HDTA-201 Secondary Subrack

Silent Knight SK-Monitor-2 System Sensor Addressable Dual Input Monitor Module

Schneider TSX08RCOMN Telemecanique MODICON TSX NESA in Box

Siemens Surge Suppressor Model Number: 3RT1936-1CC00

SIEMENS 505-4716 DC OUTPUT MODULE 5054716

SIEMENS SINUMERIK 810 6FX1121-4BA02 TESTED WARRANTY

D4-DCM Data Communications Module RS232C/RS422

SIEMENS SIMODRIVE Controller Board 6SN1118-0AA11-0AA0 6SC6110-0EA00

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA2SINUMETIK 840D NCU-BOX 6FC52476FC5356 BBB

Advantech Analog Output Module ADAM-4024 NIB

ALLEN-BRADLEY 700-P800A-1 RELAY 8NO 120VAC 10AMP XLNT

ABB 3BSX459961R4, , 3BSX459961R4,

ACCURAY 069242-002 USPP 069242002

A06B-6087-H126 FANUC POWER SUPPLY REMANUFACTURED

801429-21SC RELIANCE DRIVES REMANUFACTURED

SIEMENS 6EC1-652-0A USPP 6EC16520A

AMETEK 241CEII-1A USPP 241CEII1A

ALLEN BRADLEY 6181-BFEDBCCZZ USPP 6181BFEDBCCZZ

KOLLMORGEN IND BDS5A-220-01010-604A-2-020 USPP BDS5A22001010604

GIDDINGS & LEWIS 502-03963-60R3 USPP 5020396360R3

YOKOGAWA SE208NJ-DAB1S-LS2-A1H2/FF1 NSFP SE208NJDAB1SLS2A

PACIFIC SCIENTIFIC PC844-001-T USPP PC844001T

Siemens 6ES5-318-8MC12 USPP 6ES53188MC12

SIEMENS 6ES5 437-8EA12 6ES54378EA12

SIEMENS S5 6ES5 951-7LD21 Power Supply - PS951 7/15A

Siemens Interface Module 6ES5 458-7LB11

Siemens 6ES7 223-1PH22-0XA0 6ES7223-1PH22-0XA0 FreeShip

SIEMENS OP7 6AV3 607-1JC20-0AX1

QLogic SANbox2-64 modular Fibre channel fabric switch 64 ports

Genuine Mercedes Benz MHI Bluetooth Module Cradle Adapter Interface B6 787 5878

THIS PRICE IS FOR 3

Siemens 3RG7642-3BG00 Proximity Sensor Switch Opto-Bero

Siemens ET200M 153-1AA03-0AB0

Modicon PC-E984-381

Schneider Modicon GOULD P933 POWER SUPPLY AS-P933-000

Schneider Modicon AS-BDEP-297 Discreet IN 16x48 VDC ASBDEP297

Schneider Modicon AS-C921-100 NSPP ASC921100

Schneider Modicon ASP120000 Power Sply AS-P120-000

Schneider Modicon DAP216N AS-BDAP-216N INPUT MODULE 65

Schneider Modicon Memory Module AS-M380-006

Schneider Telemecanique XBT-F034110 XBTF034110

Schneider ATS48D47Q

PROSOFT MVI56-GSC USPP MVI56GSC

Siemens 6ES5 470-4UB12 6ES54704UB12 Analog Output Module

SIEMENS 6DD2920-0AD0 LIGHT RECEIVER MODULE

HOST AUTO PRODUCTS COMMUNICATION MODULE H4-ENET

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5357 #2ZP

SIEMENS SINUMERIK 820 6FC3261-1AC-Z BACKPLANE 5703749001.51 TESTED WARRANTY

SIEMENS MOORE IND LCM LINK CONVERTER RS485 TO RS232 ADAPTER LCM/RS485/RS24V/DIN

Allen-Bradley PanelView 600 2711-B6C10

55 Filtel Microwave Waveguides DMC378-000008-001 37.0-40.0 GHz

ABB TAYLOR MOD 300 BACKUP MEMORY MODULE 6214BZ10110F P6214BZ10110F

A06B-0153-B077#0008 FANUC SERVO MOTORS REMANUFACTURED

70909A-Z40 and 70590A-Z40 w/Interconnect Cables, GOOD

RELIANCE ELECTRIC 0-58820-2 USPP 0588202

ALLEN BRADLEY 1785-L30B/E NSFP 1785L30BE

ALLEN BRADLEY 1391-T125DT NSPP 1391T125DT

GENERAL ELECTRIC DS3800NPSE1B1A USPP DS3800NPSE1B1A

TOSHIBA VT130G1-2270-BOH USPP VT130G12270BOH

SYMAX 8010-SPR-402 USPP 8010SPR402

FANUC A20B-0008-0470 USPP A20B00080470

Siemens 6ES5-095-8MB03 USPP 6ES50958MB03

SIEMENS 6ES5 315-8MA11 -- 6ES53158MA11

SIEMENS 6ES5928-3UA12 6ES5 928-3UA12S5-135U CPU928A Processor

Siemens 6ES5 710-8MA11 USPP 6ES57108MA11

Siemens 6ED1 055-1MA00-0BA0 6ED10551MA000BA0 in Box

Siemens LOGO! 6ED1052-1CC00-0BA3 6ED1 052-1CC00-0BA3

RIS TM-2482-P13-000-P2-00-RE-00 TEMPERATURE MONITOR 117

Telemecanique XGS-B626010

SMC EX120-SIB1 serial interface module

WAGO 750-306 750306 DeviceNet Fieldbus Coupler

Siemens Board C98043-A7014-L1

Modicon AS-T384-002

Schneider Modicon AUTOMATION NUL200/AS-BNUL-200 TSX COMPACT MODULE NIB

Schneider Modicon AEG/GOULD// AS-B571-001/B571-001 INPUT MODULE XLNT

Schneider Modicon AS-B883-200 Thermocouple Input ASB883200 Free Ship

Schneider Modicon ASB231 ASB237001 Input Module AS-B237-001

Schneider Modicon OUTPUT MODULES MODEL AS-B824-016

Schneider Modicon AS-P420 Power Supply

SCHNEIDER AUTOMATION 140DRA84000 TSX QUANTUM OUTPUT MODULE PLC 16 POINT RELAY

SIEMENS 1P 6ES7231-0HC22-0XA0 ANALOG INPUT MODULE

RELIANCE ELECTRIC 0-60031-4 NSPP 0600314

SIEMENS 6ES7-322-1BH01-0AA0/6ES7322-1BH01-0AA0 SM322 OUTPUT MODULE XLNT

SIEMENS Sinumerik Tape Reader. 6FC 3984-1FD

OMRON DRT1-COM COMMUNICATION UNIT MODULE 24VDC 0.5 AMP

SIEMENS SIMODRIVE - 6SN-1145-1BA01-0BA1 E/R Module INT 16/21kw

SIEMENS SINUMERIK SYSTEM 3 Screen 6FC388-5MB

SIEMENS NOS Parker Fast & Tite N6FC6 Female Connector LOT 13

ALLENBRADLEY1771-OGDOUTPUTMODULE1771OGD

Allen Bradley SLC500 Output Module 1746-OB16

ABB OPERATOR PANEL 800 PP836 836 INTERFACE

ZUMBACH ELECTRONIC USYS100 USPP USYS100

,

MODICON AM-M909-021 USPP AMM909021

ALLEN BRADLEY 1394C-SJT05-D NSFP 1394CSJT05D

GENERAL ELECTRIC SB466RG NSFP SB466RG

GE FANUC 44A297063-G01 USPP 44A297063G01

SIEMENS 6RA7031-6GV62-0 USPP 6RA70316GV620

SICK OPTIC ELECTRONIC CLV-490-1010 USPP CLV4901010

Siemens 6ES5 700-3LA12 6ES57003LA12

Siemens POWER SUPPLY MODULE 6ES5-931-8MD11

SIEMENS 6ES5-464-8MC11 USPP 6ES54648MC11

Siemens 6ES5 421-8MA12 USPP 6ES54218MA12

Siemens S5 PLC 6ES5 700-8MA11 Bus Module E-Stand 6

Siemens CPU214 6ES7 214-1AC00-0XB0 6ES7214-1AC00-0XB0

SFP-GE-Z CISCO GENUINE 1000BASE-ZX GIGABIT ETHERNET SFP DOM

Square D 8030 RIM-144

SIEMENS 6ES5 308-3UB11 IM308 INTERFACE MODULE

WE SHIP SAME CISCO1941W-A/K9 1941 ROUTER W/ 802.11 A/B/G/N FCC COMP

Siemens 6GK1503-2CB00 in Box

Siemens TP177A 6AV6642-0AA11-0AX1 Touch Glass + Film

Schneider Modicon SCIENCE AS A CONTACT SPORT - STEPHEN H. HARDCOVER

Schneider Modicon AS-BDEP-217 Discreet IN 24VDC ASBDEP217

Schneider Modicon AS-B805-016 INPUT MODULE ASB805016

Schneider Modicon MODEL AS-B804-116 16PT I/O UNIT 115 VAC

Schneider Modicon AS-M509-004 CNC Memory Board Rev A (UVG)

Schneider Modicon AS-B882-239 H.S COUNTER

SCHNEIDERELECTRICADAPTERCABLEFORXBTGT/GK-XBTZG919

SIEMENS 6ES7 331-7KF02-0AB0 INPUT MODULE 6ES73317KF020AB0

SattCon 05-Slimline SDA module SatControl ABB

Siemens HMI 6AV6 641-0CA01-0AX1 NIB 6AV66410CA010AX1

SIEMENS SINUMERIK 6FZ1125-1AA01 ENCODER CONTROL

SIEMENS 6ES5535-3LB12 Simatic Communications Module XLNT

SIEMENS 6SN1130-1AD11-0BA0 Feed Module Drive WOW

SIEMENS 6SN1118-0DG21-0AA0 6SN1 118-0DG21-0AA0 SIMODRIVE 611-D Control Board QTY

SIEMENS 6FC5154-0AX02-1AE0 USPP 6FC51540AX021AE0

AllenBradleyPanelview3002711-K3A17L1

Allen Bradley1746-OW16 output modules in pristine condition

ABB Drive System PSU - 3HAC026289-001 - 3HAC020465-001 - DSQC 626A for IRC5

Adept Technology, Inc. MV-19 Controller with multiple modules

(7600) Allen Bradley Solid State Current Monitor Relay 813S-COWEA (7600)

INDRAMAT TDM1.4-050-300-W1-000 NSFP TDM14050300W1000

WESTINGHOUSE PC-1250-1042 USPP PC12501042

FANUC A06B-6064-H322 USPP A06B6064H322

ELECTRO CRAFT PDM-20 USPP PDM20

RELIANCE ELECTRIC 805401-15 USPP 80540115

OMRON 3G2C5-CPU01 NSFP 3G2C5CPU01

OMRON C200HW-SLK24 USPP C200HWSLK24

Siemens 6ES5 436-7LA11 6ES54367LA11

Siemens 6ES5-905-3RU11 NSFP 6ES59053RU11

SIEMENS 6ES5393-0UA15 6ES5 393-0UA15S5 OP393-III Operator Panel

Siemens 6ES5 434-7LA12 Digital Input 6ES5 4347LA12

Siemens S5 6ES5 375-1LA15

Siemens 6SE7090-0XX84-0AB0 Masterdrives CUVC Board ~VERSION~, REAL PHOTOS

Siemens 6ES7 332-5HD01-0AB0 -- 6ES73325HD010AB0

Siemens U-20T

MODICON AS-J810-000 INTERFACE MODULE ASJ810000

WS-X4712-SFPE Cisco Catalyst 4500 E-Series 12Pt.-10GBE SFP MODULE

SIEMENS 6ES7 413-1XG02-0AB0 6ES74131XG020AB0

Siemens Rectifier Module GR40

Reliance 0-57200

Schneider Modicon MARILYN MONROE - Marilyn AS úLTIMAS SESSES Michel - BOOK / PORT.

Schneider Modicon AS-B247-001 USPP ASB247001

Schneider Modicon AS-P933-001 ASP933001 Power Supply Module Repaired

Schneider Modicon AS-B828-032

Schneider Modicon AS-B801-000 800 SERIES I-O SPARE SLOT BEZEL B801 48102

MODICON MM-PMT24T0C PM 3000C TS PANELMATE PLUS SOLD AS IS

Siemens Simatic 505-4232A Input Module PLC NIB

SIEMENS 6ES5-380-7AA11 NSFP 6ES53807AA11

SIEMENS S7 SM322 DIGITAL OUTPUT MODULE

SIEMENS 6DD1-682-0BE0 USPP 6DD16820BE0

SIEMENS SINUMERIK 810M 6FC3551-1AC-Z

SIEMENS 6SN1111-OABOO-OAAO 6SN1111OABOOOAAO MODULE SIMODRIVE

SIEMENS Simodrive 65N1123-1AA00-0AA0 (4633)

SIEMENS 6FC9348-7DM Cable Connector - Surplus

ADVANTECH MIC-2718 REV.B1 01-2

ALLEN-BRADLEY 1771-ODD 120V AC Isolated Output Module 16 Outputs

ABB ACS601-0050-5-000B1200000

Adaltis Eclectica Hybrid Clinic Lab Analyzer

6ES7478-2DA01-0AC0 Brand , Factory Sealed,

9004-0173-00 10MHz XP for GenRad gr2285/9 systems

SQUARE D NC36900 NSPP NC36900

CONTROL TECHNIQUES FX-4120 USPP FX4120

BENTLY NEVADA 3300-16-02-01-01-01-02-00 USPP 3300160201010102

MTS SYSTEMS CO 469876-01 USPP 46987601

MAYR 4105418 USPP 4105418

FANUC A06B-0502-B002 USPP A06B0502B002

Siemens 6ES5 155-3UA12 6ES51553UA12

Siemens 6ES5-465-4UA13 USPP 6ES54654UA13

SIEMENS 6ES5 090-8MA01 6ES5 090-8MA01S5-90U Controller 60 DAYS WARRANTY

SIEMENS S5 6ES5-464-8ME11 ANALOG INPUT

Siemens 2pcs S5 6ES5 316-8MA12 Interface Module

Siemens 6ES7332-7ND02-0AB0 6ES7 332-7ND02-0AB0 NIB

Siemens SITOR Fuse 3NE3336 3NE3 336

Siemens 6ES5373-0AA41

Inc VAT tested

YOSHIMURA FOR KAWASAKI KFX450R 08-10

Siemens 6ES5464-8MC11 6ES5 464-8MC11

SIEMENS MP277-10 6AV6 643-0CD01-1AX1 Touch Glass

Omron S82G-1524

Schneider Modicon AS-BADU-206/ASBADU206 Analog Input NICEOFFERS ACCEPTED

Schneider Modicon AS-506P-F32 NSPP AS506PF32

Schneider Modicon AS-J892-101 INTERFACE MODULE S908 RIO INTERFACE ASCII

Schneider Modicon AS-5318-000 NSPP AS5318000

Schneider Modicon ICC/Cyberline 100-0037 Control Card AS-IS

Schneider Modicon Automation AS-B805-016 16 PLC Module

SIEMENS/TEXAS INSTRUMENTS 505-6108 INPUT MODULE XLNT

Schneider TWIDO TWDLMDA40DUK

Siemens Sinumerik Machine Control Panel 3T 548 025 9004