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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 Modi?con bbbemecanique AS-1 Communication Module ASILUFC5 NIB

Schneider Modi?con AS-BADU-205 Compact Analog bbbbb ASBADU205

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Schneider Modi?con AS-BDAP-210 Discreet Output Relay ASBDAP210

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SCHNEIDER bbbemecanique Switch XB4 BVB4

Sans Digital HA-ARC-ARC1882?X 2 Port Mini-SAS 6GB PCI Express x8 RAID Controller

Siemens ECOFAST RSt2DI 3RK1303-2AS51-?1AA0

SIEMENS SINUMERIK 810 6FX1121-4BA02 TESTED WARRANTY

Siemens 560-2126R Remote Communications Module

SIEMENS 6SN1145-1BA01-?0BA2 Servo Drive 480V

SIEMENS 6SN1113-1AA00-?1JA1 6SN11131AA001J?A1 SIMODRIVE VPM FACTORY

SIEMENS 6FC5114-0AA02-?0AA2 6FC51140AA020A?A2 ver A

ALLENBRADLEYOUTPUTMODULE17710BNSERIESB

ALLEN BRADLEY X-33553-EACH NSPP X33553EACH

ABB DSCP 172H DSPC172H ( 6 MONTH )

ADI-LFCSP-16-AD8231ACPZ-R7 IC good quality

(9725) Parker Servo Valve BD30AAENE40

INDRAMAT TRANS-01-M0-2-0000 USPP TRANS01M020000

XYCOM 4860-101B USPP 4860101B

FANUC A16B-0180-0260 USPP A16B01800260

EMERSON AX-4000-00-00-00C USPP AX4000000000C

RELIANCE ELECTRIC 86466-76R NSFP 8646676R

OMRON CV1000-CPU01-EV1 USPP CV1000CPU01EV1

OMRON V740-BA50C02-U?S NSFP V740BA50C02US

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Siemens 6SE7090-0XX84-?2FK0 6SE70900XX842F?K0

Siemens 6ES7 331-7PF11-0AB0 -- 6ES73317PF110A?B0

Spectrum Controls 8000 SAI-201

MSD 8870 GM Coil Pack Interface Module For DIS

WS-X4624-SFP-E CATALYST 4500 E-SERIES 24-PORT GE SFP

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Reliance 0-58504

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Modicon MM-PM10-300 PanelMate Plus MMPM10300

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Siemens 6ES5100-8MA02 6ES5 100-8MA02 SIMATIC S5-100U CPU100 Controller

SIEMENS S5 6ES5 458-7LC11 Relay Output Module

SIEMENS 6DD2920-0AR1 TRANSbbbbER SA61

SIEMENS SINUMERIK 840D/DE 6FC5247-0AA00-?0AA2

SIEMENS 6SN11131AA000D?A0 FNFP 6SN11131AA000D?A0

SIEMENS Simodrive 611 LT 108A 6SN1124-1AA00-?0LA1 NIB

SIEMENS 6FC9344-5PA NSFP 6FC93445PA

Advantech PCA-6006 CPU Main Board REV A1

Allen-Bradley 1771-OBD PLC-5 Digital DC Output Module - ATS 365 Warranty

ABB ACS800-U1-0050 ACS800U10050 50HP VFD

ADEPT 10330-11350 MODULE 30330-11351

6FC5103-0AB03-1AA2 SIEMENS SINUMERIK Slimline Operators Panel Colour TFT

92692 - , Allen Bradley 2711-M3A18L1 Panelview 24Vdc 2.5W Series A

SQUARE D S174A NSFP S174A

CONTROL TECHNIQUES UNI-3405 USPP UNI3405

BRINKMANN LAUDA RM20 USPP LAUDARM20

NACHI ROP501 USPP ROP501

MEASUREX 51305406-100 NSPP 51305406100

FANUC A20B-1000-0940 USPP A20B10000940

Siemens 6ES5 188-3UA12 6ES51883UA12

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Siemens 6ES7461-0AA01-?0AA0 6ES7 461-0AA01-0AA0 NIB FS

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Siemens 6ES5420-7LA11

INTERFACE MODULE IF01A A03B-0801-C101 A03B0801C101 LEBLOND BARON 25

YOSHIMURA FOR SUZUKI KINGQUAD 750 08-1

Siemens 6ES5944-7UB11 in Sealed Box

Siemens MP277-8 6AV6643-0CB01-?1AX1 Protective Film ping worldwide

Oriental Motor UDX5114N-E

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Schneider Modi?con AS-516P-008 NSFP AS516P008

Schneider Modi?con AS-M380-006 USPP ASM380006

Schneider Modi?con AS-8534-000 Connector High/Low Density 800 AEG

Schneider Modi?con 110 CPU 311 01 Micro CPU 110CPU31101 AS-IS

Schneider Modi?con AS-BDAP-209

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Schneider/Modi?c?on TM2DDO32TK TM2DD032TK

SIEMENS SINUMERIK 12.1" TFT OPERATOR INTERFACE PANEL 6FC5203-0AF02-?0AA1

SIEMENS 500-5011 OUTPUT MODULE 5005011

SIEMENS SINUMERIK 820 T 6EW1861-3BA TESTED WARRANTY

CISCO WS-SVC-CMM-24F?XS Communication Media Module

SIEMENS SIMODRIVE 6SN1145-1BA02-?0CA1SINUMETIK 840D NCU-BOX 6FC5247-0AA00#?2ZA

SIEMENS SIMODRIVE 6SN1145-1AA01-?0AA1SINUMETIK 840D NCU-BOX 6FC52476FC535?6 B2

Advantech PCA-6003 PCA-6003V

Allen-Bradley 2711-TC1-B PanelView Touch Screen

ABB 3HAB-6182-1 PLC CPU Board DSQC-335 WOW

ACCURAY 100639-001 MODULE PRINTED PCB CIRCUIT BOARD VME B209300

A16B-1210-0340 FANUC ELECTRONIC CIRCUIT BOARD

810A02A ALLEN BRADLEY 810 A02A

SIEMENS 6ES5-944-7UB11 FNFP 6ES59447UB11

ASEA BROWN BOVERI 57310001-CX/2 USPP 57310001CX2

ALLEN BRADLEY 8410-MTVE USPP 8410MTVE

MAGNETEK 71616-G3M40301 USPP 71616G3M40301

HITACHI SJ300-450HFU USPP SJ300450HFU

ALLEN BRADLEY 1336S-BRF50-AN?-L4-MX1 USPP 1336SBRF50ANL4

RELIANCE ELECTRIC 57C-409 NSPP 57C409

Siemens 6ES5-373-1AA81 NSPP 6ES53731AA81

SIEMENS 6ES5 451-4UA11 6ES54514UA11

SIEMENS Westinghouse NL-2021 6ES5 16 Point Output Modul

Siemens Output ModuleS5-110 6ES5 410-7AA11 WARRANTY

Siemens 6ES7 291-8GH23-0XA0 256kB Memory Card

SIEMENS PC670 6AV7 723-1AC00-0AD0 Membrane Keypad

PWR-C45-1400DC? C4500 1400W DC TRIPLE bbbbb SP POWER SUPPLY 1YR - ASK

GSM Modem Pool 8 Ports RS232 PCI interface Wavecom Module AT Commands Q2303A

Tripp Lite B055001USB USB Server Interface Module B055-001-USB

Siemens 6AV3 535-1FA01-0AX0 OP35 Membrane Keypad ping Worldwide

Siemens Inverter 6ES6420-2UD27-?5CA0

Modicon SW-AP9T-ATA

Schneider Modi?con GOULD 800 SERIES 7 SLOT RACK AS-H819-007

Schneider Modi?con ASM84A001 Controller AS-M84A-001

Schneider Modi?con AS-E381-902 Module Memory Exec Cartridge

Schneider Modi?con AS-S908-110

Schneider Modi?con AS-B230-501

Schneider Modi?con N.O/N.C RELAY OUTPUT MODULE AS-B814-108 NIB

Schneider TSX08EA4C1 bbbemecanique MODICON NESA PLC NIB

Schneider MODICON AS-BADU-206

PMA DC 150-CAN inbbbligent DDC control PLC 16 digital I/O 9407 700 50341

SIEMENS 6ES0-451-8MR12?/6ES0451-8MR12 RELAY OUTPUT MODULE XLNT

SIEMENS 6FC5357-0BB21-?0AE0 DRIVE SINUMERIK 840D/E2 NCU 572.2 VERSION A

GOOD ALLEN-BRADLEY COMMUNICATION ADAPTER MODULE 1771-KA2 1771KA2

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

SIEMENS SINUMERIK 6FC9320-5DC00 ELECTRONIC HANDWHEEL

SIEMENS 15747-130 SERVO PEN MOORE RECORDER 15747130

Allen-Bradley PanelView 1200 Operator Interface 2711TC1MC

5913868 Grossenbacher TRIPLE AXIS BOARD 5070084

ABB VFD Drive Motor Control 460 V 125 Hp ACS800-U1-0120-5+P901 90 Grnty

A06B-0157-B175#7076 FANUC SERVO MOTORS REMANUFACTURED

75 Agilent/HP Coaxial Switches 8762/8763

RELIANCE ELECTRIC 45C-301A NSFP 45C301A

ALLEN BRADLEY 1785-V40L USPP 1785V40L

ALLEN BRADLEY 1745-LP153 NSFP 1745LP153

GIDDINGS & LEWIS 502-03638-61R4 USPP 5020363861R4

UNICO 109220-ECL00 USPP 109220ECL00

bbbEMECANIQUE LC1F500G7 USPP LC1F500G7

FOXBORO P0400YL USPP P0400YL

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SIEMENS 6ES5 374-1FH21 6ES5374-1FH21 memory card

SIEMENS 6ES5-951-7LB14 S5 POWER SUPPLY MODULE 3A 6ES59517LB14

Siemens 6ES5 760-0AB11?/6ES5760-0AB11 RESISTOR NIB

SIEMENS 6ES5 393-0UA14

Siemens LOGO! PLC 12/24RCo 6ED1 052-2MD00-0BA2

REMAN Allen Bradley 1756-L62 /B ControlLogix Processor 4MB

Texas Instruments 305-01T

Spirent Adtech AX/4000 400301 ATM OC-3c Single Mode Interface

VMETRO VME Midas M120R-16D2 with I/O module DPIO-LI/32k/16?bit

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Modicon AS-T984-107

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Schneider Modi?con TSX DISCRETE OUTPUT MODULE AS-BDAP-217

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Schneider Modi?con AS-B824-016

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SELECTRON DIC-701 8PT bbbbb MODULE 24VDC NIB

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SIEMENS SINUMERIK 800 6FX1126-1AA03 6FX11261AA03

NOTIFIER CCM-1 COMMUNICATION CONVERTER MODULE CCM 1

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ALLENBRADLEY1771-OAD/C120VOUTPUTMODULE

ALLEN BRADLEY SLC-500 1746-OA8 SERIES A OUTPUT MODULE

ABB POWER 6TERMINAL MEDIUM VOLTAGE GROUND TEST DEVICE 3000A SWITCHGEAR B204772

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+GF+ George Fischer 317 Diaphram Valve PN: 175 317 057

MODICON AS-9003-180 NSFP AS9003180

ALLEN BRADLEY 1395-B63-D1-PZ USPP 1395B63D1PZ

HARMONIC DRIVE 472448-1 NSFP 4724481

GE FANUC IC3600STDC1 NSFP IC3600STDC1

SIEMENS 6SE7-022-6TP70 USPP 6SE70226TP70

SIEMENS 6AV7722-1BC10-0AB0 USPP 6AV77221BC100AB0

ALLEN BRADLEY 1746-NIO4V FNFP 1746NIO4V

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SIEMENS DDC Controller 549-210

Schneider PLC Remote I/O Interface Module 140CRA93100

Square D 8884 SMM-1000

SIEMENS 6ES5-312-5CA21 INTERFACE MODULE 6ES53125CA21

WE SHIP SAME CISCO WS-C3750-48PS-?S CATALYST 3750-48PS SWICTH 1 YR WARRANT

SIEMENS 6GK7-343-1GX11?-?0XE0 6GK73431GX110X?E?0 FreeShip

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Schneider Modi?con AS-BDAU-202 /Schnei?der Analog Out ASBDAU202

Schneider Modi?con AS-B814-108 NSFP ASB814108

Schneider Modi?con Remote I/O Processor AS-P451-622 120V

Schneider Modi?con AS-P452-012

Schneider Modi?con AS-BDAP-210 Output Module DAP-210 Model 042279065 EXCELLENT

SCHNEIDER TSXDSY08R4D OUTPUT MODULE 8 RELAY TR.BLK NNB

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Siemens Drive 6 RA 2620-6DV55-0 6RA26206DV550 D380/35 6-RA-2620-6DV5?5-0

SIEMENS SINUMERIK 810 I/O BOARD 6FX 1124-6AA

Send Us Your Best Offer90 Day warranty on all parts

SIEMENS 6SN1-146-1AB00?-0BA1 USPP 6SN11461AB000B?A1

SIEMENS 6SC6500-0NA02 SIMODRIVE BOARD EXCELLENT CONDITION

SIEMENS 6FC5112-0EA03-?0AA0 USPP 6FC51120EA030A?A0

Allen-BradleyElectromechani?calContactOutputModule1771-0W16/B

ALLEN BRADLEY X-137733 NSPP X137733

ABB DSQC 328A 3HAC 17970-1 DIGITAL I/O UNIT 24VDC

ADJUSTABLE SPEED DRIVE 303D0628

(ABB)DCS Freelance2000 Spare parts DAI 04 good in condition for industry use

INDUSTRIAL DEVICES B8962-FK1B-AAAA-FF NSPP B8962FK1BAAAAFF

YASKAWA ELECTRIC CIMR-P5U20370F NSFP CIMRP5U20370F

FANUC A860-0055-T061 USPP A8600055T061

EUROTHERM DRIVES 590L-0105-9-1-0-0-2-0-0750-310-012-400-0-00-00-00-00-000 USPP 5

Returns: Accepted within 7 days

PCI 78-FP USPP 78FP

POLYCOM 500-0111-03 USPP 500011103

Siemens 6ES5 454-4UA14 -FS- 6ES54544UA14