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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。

Schneider Modicon AS-B579-001 COUNTER MODULE HI-SPEED CANADA

Schneider Modicon AS-B864-001/ASB864001

Schneider Modicon Output Module AS-BDAP-216N DAP 216N WARRANTY

Schneider TELEMECANIQUE PLC TSXP47405 in Box

SIEMENS 39VIMCCN VOLTAGE INPUT MODULE NIBBD

Siemens 6ES5 242-1AA32 6ES52421AA32

Siemens 6ES7 132-4BB31-0AA0 OUTPUT MODULE 2POINT 2AMP 24VDC 5PC/PK

SIEMENS Sinumerik 802S 802C Keypad Free Ship

SIEMENS Sinumerik 6FC5147-0AA07-0AA0. Cooling Fan 840C

GE FANUC COMMUNICATION CONTROL MDL MODULE IC693CMM311E

SIEMENS WARRANTY SIMODRIVE 611 Digital Control

SIEMENS SINUMERIC 840D 6FC5247-0AA00-0AA2

SIEMENS ACROMAG/SIEMENS/MOORE 15669-36-5/15669-1-14 PROM BOARD XLNT

Allen-Bradley CAT. No 1771-OBD/B 10-60 VDC Output Module

A-B QUALITY PLC-5/V30B,PLC CPU BOARD

AC Motor Speed Control VFD - 25 HP - 480 Volt - Three Phase Input

A06B-0752-B131#3000 Motor Fanuc

750kVA Pad Mount Transformer with 200A 15KV Loop Feed Bushings

RELIANCE ELECTRIC SA3000DC17.5 USPP SA3000DC175

ALLEN BRADLEY 5370-CVIM2 USPP 5370CVIM2

ALLEN BRADLEY 20DD8P0A0EYNANNNN USPP 20DD8P0A0EYNANNN

INDRAMAT MAC-112B-2-GD-3-C/130-B-0/S001 USPP MAC112B2GD3C130B

YASKAWA ELECTRIC DDSCR-GL60H3 NSFP DDSCRGL60H3

WESTINGHOUSE 716B034A29 USPP 716B034A29

INDUSTRIAL DEVICES SMARTSTEP-240 USPP SMARTSTEP240

Siemens 6ES5-246-4UB11 NSFP 6ES52464UB11

SIEMENS 6ES5 377-0AA32 6ES53770AA32

SIEMENS Memory Submodule 6ES5376-1AA21 SURPLUS NIB W/PAPERWORK

Siemens BOARD 6ES5-410-0AA12 6ES5 410 0AA12 6ES54100AA12 E8843-0-A3653-C4-B

Siemens 6ES7 151-1AA02-0AB0 6ES7151-1AA02-0AB0 FreeShip

Siemens OP Program Cable 6XV 440-2KH32 6XV4402KH32

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

Texas Instruments 505-4816

Sunpak Flash OT-1D TTL Interface Module Olympus NICE UN

UBR7200-NPE-G1 CISCO UBR NPEG1 ENGINE W/ 512MB D/64MB F 3 GE/FE/E

Siemens CP243-1 6GK7 243-1EX01-0XE0 6GK72431EX010XE0

Modicon DI-1131-000

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

Schneider Modicon ASB238 ASB238001 Output Module AS-B238-001

Schneider Modicon AS-BDEP-211 NSFP ASBDEP211

Schneider Modicon AS-BDAP-218 Discreet Output Relay ASBDAP218

Schneider Modicon -AS-509P-003

Schneider Modicon DEP 210 AS-BDEP-210 INPUT MODULE

Schneider Telemecanique Advantys DDI3615

Schneider Modicon Premium TSXAEY414 4-Channel Analogue Input Module

Quad Core 2.5GHz 8GB 3000M Backlit BTooth DVDRW Win 7

SIEMENS 6ES5-454-4UA11/6ES5454-4UA11 OUTPUT MODULE NIB

SIEMENS SIEMEN 6DD1681-0CA2 INTERFACE MODULE SE20.2 /BOX

Mitsubishi A Series PLC Communication Module AJ71E71-S3

SIEMENS Simodrive 6SN1123-1AA00-0AA0 LT Module Int.15AVickers#1-230-0204A

SIEMENS SINUMERIK 840DE NCU 561.2 6FC5356-0BB11-0AE0

SIEMENS /MOORE 39SDM024DCCAN APACS SDM MODULE 16101-121/01

Allen-Bradley VersaView 1750M 17 Touchscreen Color Monitor

ALLEN BRADLEY SLC 500 1746-OA16/A OUTPUT MODULE S26D

ABB ROBOTICS DRIVE UNIT DSQC345B / 3HAB8101-2/06A

A06B-0147-B077#0008 FANUC SERVO MOTORS REMANUFACTURED

0-30kV Electrostatic Kilovoltmeter AC/DC 14MHz C197 an-g Fluke HP,Agilent,GR

NACHI BUY444 USPP BUY444

ALLEN BRADLEY 1756-L55M24 NSFP 1756L55M24

ALLEN BRADLEY 1336-BDB-SP37D NSFP 1336BDBSP37D

GENERAL ELECTRIC 5CD153RA055B001 USPP 5CD153RA055B001

STAEFA CONTROL SYS REG9 NSFP REG9

SIEMENS 6SE7-038-6GL84-1JA1 NSFP 6SE70386GL841JA1

BANNER ENGINEERING MSR-3624Y NSFP MSR3624Y

Siemens 6ES5 945-7UA13 6ES59457UA13

Siemens SIMATIC S5 6ES5 944-7UB21

SIEMENS 6ES5-705-0BC50 NSFP 6ES57050BC50

Siemens 6ES5 490-7LB11 USPP 6ES54907LB11

Siemens 6AV3672-1CA11 CPI-MODUL for OP/TP27

SIEMENS Inverter VFD 6SE7021-0EP50-Z 6SE70210EP50Z FS

SALE i7-3770K 8G 1T128G SSD GTX560/1G Overclock Gaming/Business Computer

Telemecanique ABE7S16E2B1

SIEMENS INTERFACE MODULE A1-116-100-504-ISS 10 A1116100504ISS10

20-HIM-A3 /A PowerFlex HIM Included

Siemens 6SE7037-0EJ84-1JC0

Simens Sinumerik 802SE Membrane Keypad

Schneider Modicon AS-BDAP-210 ASBDAP210

Schneider Modicon AS-B872-011 OUTPUT MODULE ASB872011

Schneider Modicon AS-B863-001 NSFP ASB863001

Schneider Modicon AS-BADU-206 Free Ship

Schneider Modicon CABLE AS-W953-006 FOR P190 TO 984-680

Schneider Modicon AS-H827-209 Rack PN AS-9536-000

Schneider Modicon PanelMate Plus 1000 MM-PM10300C 92-01229-01

SIEMENS 6ES5 464-8MC11 ANALOG INPUT MODULE 4POINT 10V

RME FireFace800 Fireface 800 PROAUDIOSTAR

Siemens Analog module 6ES7-193-0CD40-0XA0

SIEMENS Sinumerik Electronic Component 6FC9302-2BD-01 Warranty

Reliance Electric 57404-1 Network Communications Module

SIEMENS CONTROLLER CARD 6SN1122-0BA11-0AA1

SIEMENS SUN XS6-FC-LXXX-S8-CKZ SDLT600 FC Tray Kit SL8500

SIEMENS 6FC5012-0CA03-0AA0 6FC50120CA030AA0 version A

AllenBradley2711-K9C9PanelView900OperatorInterfaceSeriesCRev.A

Allen Bradley Versa View 1700P - 6181F-17TPXPH Series D

ABB inverter Series Communication board NINT-71C for industry use

Advanced Energy PDX 8000 340-440 Khz 1356048-100, Novellus 27-257463

(no lot) ABB Drive ACS601-0070-4-000B1200800 3PH 300-500VAC

MEASUREX 08638700 NSPP 08638700

ALLEN BRADLEY 1336E-B050-AE-EN-HA2-L8E USPP 1336EB050AEENHA2

GE FANUC IC752WBB202 USPP IC752WBB202

FANUC A16B-1211-0130 NSPP A16B12110130

SIEMENS 6DD1611-0AF0 NSFP 6DD16110AF0

RELIANCE ELECTRIC 45C-202 USPP 45C202

SIEMENS 6FX1-192-3AB00 NSPP 6FX11923AB00

Siemens 6ES5 470-7LA11 6ES54707LA11

Siemens 6ES5-948-3UA11 USPP 6ES59483UA11

SIEMENS 6ES5-441-4UA12 USPP 6ES54414UA12

Siemens 6ES5 931-8MD11 POWER SUPPLY GOOD TAKEOUT

Siemens S5 6ES54207LA11 6ES5 420-7LA11

Siemens C98043-A1305-L1-08

Siemens 6ES5 470-4UB12 6ES54704UB12

Square D 8030 CC-25

Omron C500-II101 Interface Module

WS-C2970G-24TS-E CISCO Switch w/1year -WSC2970G24TSE 2970G24TSE

Siemens 6ES7321-1FF01-0AA0 6ES7 321-1FF01-0AA0

Siemens SINAUT MD741-1 6NH9 741-1AA00 6NH9741-1AA00

Rosemount 8712ct12m4

Schneider Modicon ASP120000 Power Supply 115/230 VAC AS-P120-000 Electric

Schneider Modicon AS-B551-001 NSPP ASB551001

Schneider Modicon AS-W600-012 USPP ASW600012

Schneider Modicon AS-BDEP-217 PLC

Schneider Modicon AS-B827-032 24 vdc Input

Modicon AEG Panelmate Plus Operator Interface Panel MM-PM10-200 MMPM10200

Siemens Digital Input Module Cat6ES5420-4UA11

SGI Silicon Graphics DIVO Video XIO Board with Video I/O Boxes SDI Component

Siemens OP-393 III 6ES5 393-0UA15 6ES5393-0UA15

SIEMENS SINUMERIK 6FC3641-0BB CONTROLLER

Standard Communications TVM550S Agile TV Modulator refurbished

SIEMENS 6SN1118-ODJ23-OAA2 6SN11180DJ230AA2 CONTROL BOARD SIMODRIVE

SIEMENS Control Board # C98043-A1304-L Simodrive

SIEMENS 6FC5247-0AF11-0AA0 SINUMERIK 810D/840D PROFIBUS

Advantech Remote Data Acquisition Module ADAM-4017 NIB

ALLEN-BRADLEY 1734-OV4E POINT I/O 24V DC 4-Channel Sink Output Module Protected

ABB BAILEY SYMPHONY CONTROLS DIGITAL IMASI23 ANALOG INPUT SLAVE MODULE 88213

ADEPT TECH 10332-11150 NSPP 1033211150

(1) Laser Precision TD3000 with TD385 Module

INDRAMAT DDC01.2-N200A-DS68-00-FW USPP DDC012N200ADS680

TELEMECANIQUE TSX-MAP-PC74M USPP TSXMAPPC74M

EMERSON MX-1600-CE USPP MX1600CE

CUTLER HAMMER C10GN3 USPP C10GN3

PRINTRONIX T5308 USPP T5308

MODICON AS-C484-164 USPP ASC484164

INDRAMAT MAC-090A-0-RD-4-C/110-A-0-WI524LV-S001 USPP MAC090A0RD4C1101

Siemens 6ES5 318-3UA11 6ES53183UA11

Siemens 6ES5-535-3LB11 USPP 6ES55353LB11

SIEMENS 6ES5-374-1KH21 NSPP 6ES53741KH21

Siemens 6ES5 316-8MA12 5 Interface Module

Siemens 6ES5-943-7UA22/ 6ES59437UA2 CPU Unit NICE OFFERS ACCEPTED

Siemens 6NH7800-4AA30

Siemens TP270 6AV6545-0CC10-0AX0 Touchscreen HMI

Siemens 6ES5943-7UA11

Line Modules for Network Interface Devices 60

YAMATAKE DISTRIBUTED I/O MODULE HD-CAOM00 HD-CAOBS00

Siemens 6ES7 223-1PH22-0XA0 6ES7223-1PH22-0XA0 in Box ping

SIEMENS OP7 6AV3 607-1JC20-0AX1 Membrane Keypad

Reliance 0-51386

Schneider Modicon AS-B804-016

Schneider Modicon AS-9370-001 USPP AS9370001

Schneider Modicon AS-P420-510 USPP ASP420510

Schneider Modicon AS-B357-001 24VDC Input Module

Schneider Modicon AS-884A-201 3.5K w/Remote I/O Processor Controller

MODICON TELEMECANIQUE MAGELIS OPERATOR INTERFACE TXB TF024510E

Siemens Simatic S7 321-1BL00-0AA0 32pt Input Module

Siemens 6ES7 332-5HF00-0AB0 -- 6ES73325HF000AB0

SIEMENS SIMATIC OUTPUT MODULE 6ES7 326-2BF01-0AB0 IN BOX

SIEMENS SINUMERIK 6FC5203-0AF01-0AA0 MembraKeypad

SIEMENS Sinumerik Module 6FX1121-8BB02 E Stand G & 00

SIEMENS SIMODRIVE POWER MODULE 6SN1123-1AA00-0EA2

SIEMENS Simodrive 6SN1123-1AA00-0AA1 6SN11231AA000AA1

SIEMENS CONTROLLER CARD 6FC5357-0BB35-0AE0

Advantech Remote Data Acquisition Module ADAM-4013 NIB

Allen-Bradley 2711-B6C1 Panelview 600 NIB

ABB 9F60BHH905 VIZ-75 Transformer w/ GE Fuse 120V

Acterna JDSU FST 2310 Cable Tester sonet DS1 to OC-12c 2209

6ES5921-3WB11 6ES5921-3WB13 6ES5921-3WB14 CPU/PC Siemens 3 CNC

8536SGO1VO2 SIZE 5 STARTER WITH 120V COIL 8536SG01V02

SIEMENS 6SE7023-8TP50-Z USPP 6SE70238TP50Z

BAILEY CONTROLS INICT-01 USPP INICT01

ATLAS COPCO 4240-0151-01 USPP 4240015101

MODICON AS-384A-000 USPP AS384A000

INDRAMAT PPC-R02.2N-N-Q1-P2-T2-FW USPP PPCR022NNQ1P2T2F

ATLAS COPCO S4-CTAD-BT-115 USPP S4CTADBT115

WARNER ELECTRIC CBC-1500AHFC USPP CBC1500AHFC

Siemens 6ES5451-4UA14 DIGITAL OUTPUT MODULE NIB-FS

SIEMENS 6ES5 701-0LA11 6ES57010LA11

SIEMENS S5 6ES5 430-7LA12 OUTPUT MODULE

Siemens S5 CPU 942 6ES5 942-7UA13 6ES5942 6ES59427UA13

Siemens 6ES7 972-0BB52-0XA0 6ES79720BB520XA0 in Box ping worldwide

Siemens S7-200 EM231 6ES7 231-0HC22-0XA0 NIB FreeShip

Siemens 3TH4262-0B

HONEYWELL TC-CCR013 REDUNDANT NET INTERFACE MODULE

Waters System Interface Module Detector Status Unit

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

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

Omron 3G2C5-BC001

Schneider Modicon AS-J820-001 PLC

Schneider Modicon Programmable Controller AS-584M-240 -DI-

Schneider Modicon AS-H827-103 USPP ASH827103

Schneider Modicon MINT AS-B883-111 ASB883111

Schneider Modicon AS-E908-131

Schneider Modicon AUTOMATION INC AS-B802-008 115VAC OUTPUT NNB

Telemecanique Proximity Switch Sensor XS2-D12PA140C NIB

Schneider Telemecanique TSX Nesa TSX08H04M HMI Panel

Siemens Touch Panel TP 170B TP170B 6AV6 545-0BC15-2AX0 6AV6545-0BC15-2AX0

Siemens 6AV3617-1JC30-0AX1 OP17 Fast Shipping

SIEMENS SINUMERIK 6FR2490-0AH12 Kuka ACR-GRT-PHG 6FR24900AH12 NIB

Free Continental USA . Free Canada .

SIEMENS Simodrive Sinumerik 6RB2100-0NA21 includes 6RB2100-0SA21

SIEMENS SIMODRIVE 6SN1146-1AB00-0BA1SINUMETIK 840D NCU-BOX 6FC5247-0AA00-0AA24

SIEMENS Transcat Moore Nullmatic Pressure Regulator 1/8" Model 41-100

Allen-Bradley A-B PanelView 1400e Terminal 2711E-K14C6X

AB,ALLEN-BRADLEY BULLETIN GMC DIGITAL SERVO CONTROR KW 1394 ,AXIS 5KW,AE

AC TECH DRIVE M14250B

A06B-0855-B954#0042 GE FANUC AC SERVO SPINDLE REMANUFACTURED

7700MHz-10700MH 0.05% 0.5 mWat Resonant frequency meter CH2-37A an-g Agilent HP

REXROTH 1-070-083-221-304 NSPP 1070083221304

ALLEN BRADLEY 6170-EDD1A1EBZZ/A USPP 6170EDD1A1EBZZA

ALLEN BRADLEY 2711-K5A2 FNFP 2711K5A2

INDRAMAT TDM1.2-050-300-W1-0 USPP TDM12050300W10

YASKAWA ELECTRIC USA-MED-30MA2SE USPP USAMED30MA2SE

XYCOM 3512-03F114003101F USPP 351203F114003101

KEYENCE CORP LK-081 USPP LK081

Siemens 6ES5-255-3AC11 USPP 6ES52553AC11

SIEMENS 6ES5 400-7AA13 Input card

SIEMENS Power Supply Module 6ES5-951-7LB21