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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。

Modicon MM-FMFK-000

Schneider Modicon AS-B804-116 Output Module 115VAC

Schneider Modicon AS-884A-201 PROCESSOR 3.5K W/REMOTE I/O MODULE

Schneider Modicon AS-B573-015 USPP ASB573015

Schneider Modicon CPU PROGRAM MEMORY MODULE MODEL AS-P371-002

Schneider Modicon AS-HDTA-201 ASHDTA201 Secondary Subrack FS

Schneider Modicon AS-B864-001 | Output Module NIB

Modicon 140DRA84000 16 Point Relay Output Module

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

Schneider Modicon 140CPS11420 140 CPS 114 20 Quantum AC Power Supply

Siemens Interface Module TIWAY 500-5053 11241

SIEMENS Sinumerik 6FX1120-3BB01 PC Board

SIEMENS NET COMMUNICATION PROCESSOR MODULE 6GK7343-1HX00 6GK7 343-1HX00-0XE0

SIEMENS 6SN1-123-1AA00-0LA1 USPP 6SN11231AA000LA1

SIEMENS 6SN1123-1AA00-0EA1 Simodrive LT-MODUL

SIEMENS 6FC5203-0AF50-3AA1 6FC5 203-0AF50-3AA1 MCP416C

Allen-BradleySLC5001746-OB16SerCOutputModule

Allen-Bradley - 2711P-K4M20A - NIB - 1 YEAR WARRANTY

ABB Circuit Breaker SACE S6N 800A 3P LI Trip Electronic

ADEPT TECH AWCII-040 NSPP AWCII040

(4970) Allen Bradley Servo Module 1771-HS3A 3Axis SEALED 4970

INDRAMAT MAC112C-0-ED-4-C/130-A-0/WI520LV/S005 USPP MAC112C0ED4C130f

TRANSTECTOR ACP100BW NSPP ACP100BW

FANUC A06B-6047-H041 USPP A06B6047H041

DEIF CM-2 USPP CM2

RELIANCE ELECTRIC 45C-322 USPP 45C322

NACHI RAX11-C USPP RAX11C

METRA INSTRUMENTS 610-0001-007 USPP 6100001007

Siemens 6ES5 393-0UA11 6ES53930UA11

Siemens 6ES5-762-3CS11 NSFP 6ES57623CS11

SIEMENS 6ES5-376-1AA31 USPP 6ES53761AA31

Siemens 6ES5 420-8MA11 -- 6ES54208MA11

Siemens RELAY OUTPUT MODULE 6ES5 452-8MR11

Siemens 6SE7021-8CB20 6SE7 021-8CB20

Siemens TXB1.P1

Siemens 6SC6100-0NA01

Micro-Tech Scientific Ultra Plus Pump Controller Interface Module

X2-10GB-LR 10GBASE-LR X2 MODULE FOR CISCO

Siemens 6ES7 321-1BL80-0AA0 6ES7321-1BL80-0AA0 FreeShip

Siemens PLC 6ES7 223-1PL22-0XA0 6ES72231PL220XA0 NIB Seal intact

Reliance 0-52845

Schneider Modicon AS-884A-211/AS884A211 Controller

Schneider Modicon AS-B230-102 USPP ASB230102

Schneider Modicon AS-P810-000 USPP ASP810000

Schneider Modicon AS-B805-016 MODULE REPAIRED ASB805016

Schneider Modicon AS-B350-001 Output Module ASB350001 AEG

MODICON PANELMATE PLUS INDUSTRIAL COMPUTER OPERATOR INTERFACE MM-PMA2400C

SIEMENS SIMATIC INPUT MODULE 24VDC TI305-05N

Siemens 6ES7 321-7RD00-0AB0 -FS- 6ES73217RD000AB0

SIEMENS SIMATIC 6ES5451-4UA14 SIMATIC S5 OUTPUT MODULE 6ES54514UA14

SIEMENS 6DD1640-0AC012 mo. warrantyFree UK/EU ShippingPrice Inc UK VAT

SIEMENS SinumerikSimodriveSimaticservo drive motor repair

SIEMENS One SimoDrive 6SN1130-1AA11-0BA0 Free Ship

SIEMENS SimoDrive 6SC6901-1AA00-Z _ 6SC 6901-1AA00-Z (HAS NO BOARDS)

SIEMENS CAT 87DSD6FC SIZE 1 480 VOLT FUSIBLE COMBINATION STARTER

Advantech ADAM-4019 Analog Input Module in Box

ALLEN-BRADLEY 1771-OZL Reed Relay Contact Output Module 0 To 24V

ABB ACS 600 INVERTER UNIT AC DRIVE ACS60402106000B0000901

Actus Power AC Servo Controller NPSA-2.5NN-60-E1 USPP NPSA2.5NN60E1 Pak 1-PH/3PH

6ES7408-1TA01-0XA0 Brand , Factory Sealed,

90 , checked- good

SIEMENS TS31 NSFP TS31

BOSCH SM25/50-TCT USPP SM2550TCT

BAILEY CONTROLS NAMM-03 NSPP NAMM03

MODICON AS-S911-000 USPP ASS911000

KEYENCE CORP CV-501 NSFP CV501

CROUSE HINDS EPC43042WT30-3 USPP EPC43042WT303

Siemens 6ES5 095-8MB01 6ES50958MB01

Siemens 6ES5-460-4UA13 USPP 6ES54604UA13

SIEMENS 6ES5 911-0AA31 6ES59110AA31

SIEMENS S5 6ES5 482-8MA11 I/O MODULE

Siemens Simantic S5 6ES5 441-7LA12

Siemens 6ES7253-1AA22-0XA0

SIEMENS SIMATIC PG702 6ES7702-0AA00-0YA0 PG 702 in Box ping

Siemens 6ES5102-8MA02

HP Cerjac E6327A T1 Test Advisor DS1 VF Signaling Interface Module RS-449/232

XJ8 XK8 Jaguar Sat Nav System Interface Module

Siemens 6ES5 941-7UB11 6ES5941-7UB11

Siemens MBC Exsion PTM6.2I420 PTM6.2I420 PTM6.21420

Omron C500-ID218

Schneider Modicon AS-BDEP-220/ASBDEP220 Input OFFERS ACCEPTED

Schneider Modicon AS-085A-000 NSFP AS085A000

Schneider Modicon AS-J478-010 USPP ASJ478010

Schneider Modicon ANALOG INPUT MODULE AS B873 001

Schneider Modicon DAP217/AS-BDAP-216

Schneider Modicon /AS-J200-001 I/O Expander Unit ULN

SLC 500 Input Module

Schneider Telemecanique XBTZ9731 Cable

SIEMENS TEXAS INSTRUMENTS 505-4816 MODULE DIGITAL OUTPUT 505 16O 85-256VAC

SIEMENS 5SE2316 USPP 5SE2316

SIEMENS Sinumerik 6FX1154-8BB01 Vidio Interface Module

DNSES-AA EISA 2-LINE SYNC COMMUNICATION MODULE

SIEMENS Simodrive LT Modul Int .50 A 6SN1123-1AA00-0CA0_6SN11231AA000CA0_Ver. C

SIEMENS SIMODRIVE 6SN1145-1BA01-0BA1SINUMETIK 840D NCU-BOX 6FC52476FC5356B1

ADVANTECH 16-Channel Digital Input Module ADAM-5051

Allen-Bradley 8000 EEA 905720-03 Rev E interface

ABB 2668 402-29/3 DSCA125A MASTER COMMUNICATIONS BOARD MODULE CARD 62644

accu sort axiom 400

A06B-6066-H244 FANUC DRIVES REMANUFACTURED

800' Pratt 250 250 3/0 250MCM Aluminum URD 600 Volt Triplex

SIEMENS 6AV3-627-1LK00-1AX0 USPP 6AV36271LK001AX0

ALLEN BRADLEY 8520-4S10A-BATEX4S-1-2-3-4-5-7 USPP 85204S10ABATEX4S

ALLEN BRADLEY 6180-DICEGLDBECZ USPP 6180DICEGLDBECZ

JOSLYN CLARK 5DP9-9009-11 NSPP 5DP9900911

GENERAL ELECTRIC DS3860HAIC NSFP DS3860HAIC

YASKAWA ELECTRIC JANCD-MM13B NSFP JANCDMM13B

MONITECH ML080CT8520S FNFP ML080CT8520S

Siemens 6ES5-312-5AA31 USPP 6ES53125AA31

SIEMENS 6ES5 431-8FA11 6ES54318FA11

SIEMENS S5 6ES5 464-8ME11 Analog Input Module

Siemens Expansion Rack 6ES5 701-1LA11 29904

SIEMENS 6ES7 223-1BF20-0XA0 6ES7223-1BF20-0XA0 FreeShip

Siemens OP37 6AV3 637-1ML00 Membrane Keypad

Radisys ATCA-5010 Shelf Peripheral Module

GE Kalatel KTD-3312 Paragon Interface Module 560 List

TEXAS INSTRUMENTS 500-5184 INTERFACE MODULE MODBUS

Siemens 12/24RC 6ED1052-1MD00-0BA4

Siemens EM232 6ES7232-0HB22-0XA0

Modicon PA-0547-000

Schneider Modicon PLC AS-J892-001 COMMUNICATION MODULE ASJ892001

Schneider Modicon AS-BDAU-204 Compact Analog OUT ASBDAU204

Schneider Modicon AS-C484-065 NSFP ASC484065

Schneider Modicon AS-J200-001

Schneider Modicon AS-B550-101 OUTPUT MODULE H-12274

Schneider Modicon Input Part AS-B865-001

Schneider TELEMECANIQUE TSXSCP114 #2

Schneider 16-Point Input Module TSXDST1682 WARRANTY

PVDM3-192 CISCO 192-CHANNEL VOICE AND VIDEO DSP MODULE

Siemens 6ES5441-4UA12 Simatic Output Module -

SIEMENS 6DD1681-0AG2 output module 120vac/dc

Ingersoll-Rand Communication Module 3657090

SIEMENS SIMODRIVE 6SN1145-1AA01-0AA1SINUMETIK 840D NCU-BOX 6FC52476FC5356 [3]

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

SIEMENS MOORE PRODUCTS 15853-12-1 LINK FACE BOARD NNB

ALLEN-BRADLEY PLC 5 1771-OD16 B ISOLATED 120V AC OUTPUT MODULE QUANTITY

53 Vernier Software PH-DIN BGP EKG BAR CO2 DO COL TRB-BTA RH ISE LS FLO NO3

ABB SD802F 3BDH000012R1 good in condition for industry use

A06B-0148-B184#7076 FANUC SERVO MOTORS REMANUFACTURED

700' Mobile Home Trailer 4/0 4/0 2/0 4 Direct Burial Wire Black Aluminum URD

PHOENIX CONTACT IBS-IP-500-PS-2-BS USPP IBSIP500PS2BS

ALLEN BRADLEY 1779-KFM USPP 1779KFM

ALLEN BRADLEY 1336S-C010-AA-EN-HA1-L6 USPP 1336SC010AAENHA1

GENERAL ELECTRIC DS3800HSQD1H1E USPP DS3800HSQD1H1E

TEXAS INSTRUMENTS PLC 530T-1112 NSFP 530T1112

STI OF4172BR USPP OF4172BR

EAGLE MACHINERY CPC01007 NSPP CPC01007

Siemens 6ES5 955-3NC13 6ES59553NC13

SIEMENS 6ES5 102-8MA02 S5-100U CPU 102 6ES51028MA02

SIEMENS 6ES5-777-0BC01 BUS TERMINAL

Siemens 6ES5 700-2LA12 /6ES5700-2LA12 7 SLOT RACK XLNT

Siemens 6DS1312-8AB in box, seal opened,

Siemens LOGO! 230RC 6ED1 052-1FB00-0BA5 in Box, Seal Intact,

Robotron 503-1-0324-16 5031032416 I/O Module Rev E1

Telemecanique TSXFPACC4

SIEMENS TI PLC DRIVE INTERFACE MODULE 6SE31900XX878BF0

Wago 750-457 4-CHANNEL ANALOG INPUT MODULE

Siemens 7SJ6825-5EW20-3FE0/CC

Modicon AS-S902-131

Schneider Modicon DAP 217 AS-BDAP-217 Output

Schneider Modicon AEG/GOULD// AS-P120-000/042 403 424/7657 POWER SUPPLY NIB

Schneider Modicon AS-B875-111 ASB875111 Fast Shipping

Schneider Modicon AS-8534-000 AS8534000 800I/O

Schneider Modicon Modem Stand Alone AS-J478-010

Schneider Modicon AS-MBKT-085 Connector Adapter NIB

Schneider Automation Inc 140 DRA 840 00 140DRA84000 Output Module

SIEMENS 505-4208A INPUT MODULE 5054208A

Reliance Electric 57C416 0 Remote I/O Comm Mod 0-57416-T No Box

SIEMENS 6ES7900-0DA00-0XA0 NSFP 6ES79000DA000XA0

SIEMENS Sinumerik Power Supply 6EW 1861-3AB E Stand G

Phoenix Digital Corporation OCM-DPR-85-P-D-ST-ACV Optical Communications Module

SIEMENS SERVO DRIVE 6SN1123-1AB00-0AA1

SIEMENS TAPE READER 6FC3984-1FC T40 F-NR NORTRA 15299 KDTK GN17862 USMT MILL CNC

SIEMENS 24VDC 2A DMP COMPACT OUTPUT MODULE 6FC5111-0CA03-0AA2

AllenBradley1771-WNPLC-5FieldWiringArmforInput/OutputModules

Allen Bradley Solid State Timer Relay 700-RTC00000U1 WARRANTY

ABB MEM86-192K + 192KRM

ZINSCO 3034215HM 300 kVa 480 240 60HZ 3P transformer

(V7) 1 GENERAL ELECTRIC 16L0076WH3 CAPACITOR V7

MODICON 140-CPU-434-12 USPP 140CPU43412

ALLEN BRADLEY 1392-A040-RA-MC USPP 1392A040RAMC

GENERAL ELECTRIC DS3815PMMA1F1B USPP DS3815PMMA1F1B

FOXBORO 220S-2F6 USPP 220S2F6

SIEMENS 6ES7-647-2CE10-1CX1 NSFP 6ES76472CE101CX1

SCHRADER BELLOWS 008-4934 NSPP 0084934

WESTINGHOUSE A201K4CA-J1 USPP A201K4CAJ1

Siemens 6ES5 535-3MA12 6ES55353MA12

Siemens DIGITAL OUTPUT SIMATIC S5 6ES5-451-8MD11

SIEMENS 6ES5-454-7LA11 MODULE 6ES54547LA11

Siemens 6ES5 391-5AA13 Operating Control Panel 11207

Siemens S5 Memory SubModule 6ES5 372-0AA61 NIB

Siemens Controller RDE10.1 NIB

Shuttle X50V3 15.6" Atom D2700 GMA3650 DDR3-1600 Gigabit All-In-One System

Square D 8030 HOM-222

Ser.A

WE SHIP SAME WS-CAC-3000W CISCO CAT. 6500 SER. 3000W AC POWER SUPPLY

Siemens 6FC5510-0BA00-0AA0 + 6FC5511-0CA00-0AA0

Siemens TP177 6AV6 640-0CA11-0AX1 Touch Glass + Film

Schneider Modicon Square D AS42CM-T PowerLink Control Modules

Schneider Modicon AS-BFRQ-254C TESTED Freq IN ASBFRQ254C

Schneider Modicon AS-B802-008 USPP ASB802008

Schneider Modicon Groupe AS-BDEP-210 ASBDEP210

Schneider Modicon AS-J812-000

Schneider Modicon AS-B872-100 Analog Current Output Module H11 817

SchneiderTSXDSY16T2Premium24VDCSourceOutputModule

SIEMENS 6ES7-138-4FA04-0AB0 6ES71384FA040AB0 DIGITAL INPUT MODULE

Schneider 140CPU43412U 140 CPU 434 12U TSX Quantum Processor 2xMB 1xMB

Siemens HMI 6AV6 644-0BA01-2AX1 NIB 6AV66440BA012AX1

SIEMENS Sinumerik 6FX1126-8BA00 Control Card Interface

SIEMENS 6SE7090-0XX84-0AK0 CB1 MASTER DRIVE COMMUNICATION MODULE 63023

SIEMENS 6SN1-123-1AB00-0HA1 NSFP 6SN11231AB000HA1

SIEMENS 6SN1123-1AA00-0BA1 6SN11231AA000BA1 Simodrive

SIEMENS 6FC5-203-0AC00-1AA0/6FC5203-0AC00-1AA0 NIB

AllenBradleyPanelviewPlusLogicModule2711P-RP8D/A2711PRP8D

Allen-Bradley - 1794-IE8

ABB DCS 500,INDUSTRIETECHNIK AG DCS501-0350-51-21P2100

ADEPT TECHNOLOGY 1033000500 MODULE VJI ROBOT CONTROLLER

(6) MKS 1559A-27301 1559A02821LS1BV MASS FLOW CONTROLLER Range 20 SLM-200 SLM

INDRAMAT MDD-112D-N-030-N2M-130PB2 NSPP MDD112DN030N2M13

VICTOREEN 876A-1 USPP 876A1

FANUC A06B-6057-H203 USPP A06B6057H203

DYNAMATIC AF-162002-0240 USPP AF1620020240

RELIANCE ELECTRIC 57C-442 USPP 57C442

NEMATRON CORP ICC-7L6-HO1 USPP ICC7L6HO1

MODICON AS-B873-001 USPP ASB873001