Project Title Location Project No. Document No. : : : : : Inner Mongolia China Coal Mengda New Energy Chemical Co., Ltd. 500 KTA Engineering Plastic Project PP Plant Ordos City, Inner Mongolia Autonomous Region 1115120 1115120-00-IA343-1 Rev.: 0 5 of 22 - Manual: The operator sets the output of the controller and the FV is in a fixed position.
手动: 操作员设定控制器输出并且 FV（阀位）在固定位置。
- Automatic: Normal flow controller with the desired flow rate kg/h set by the operator. The DCS calculates the cycle gas propylene partial pressure from the analyzer output AI-4001-15.
自动: 由操作员设定的期望的流速kg/h的正常流量控制器。 DCS计算来自分析仪AI-4001-15输出的循环气中丙烯分压。
Cascade: The set point of the controller is either from the Partial Pressure Controller, the Total Reactor Pressure Controller, or the Reactor Inlet Gas Temperature Controller. HS-4001-1 is a three position selector switch that receives the output signals from Total Reactor Pressure Controller PRC-4001-30, Propylene Partial Pressure Controller PIC-4001-94 and Reactor Inlet Gas Temperature Controller TIC-4001-25 (for dew point control) and sends a set point to Propylene Flow Controller FIC-4001-1. See Loops 4001-30, 4001-94, and 4001-25 for details.
串级: 控制器的设定点来自分压控制器，反应器总压控制器或是来自反应器入口气体温度控制器。 HS-4001-1是一个三位置选择开关并接收来自反应器总压控制器PRC-4001-30、丙烯分压控制器PIC-4001-94和反应器入口气体温度控制器TIC-4001-25（露点）的输出信号，并发送一个设定值给丙烯流量控制器 FIC-4001-1。详见回路 4001-30、 4001-94和4001-25。
When tight control of propylene partial pressure is required, HS-4001-1 should be set to Propylene Partial Pressure Control mode. The Total Reactor Pressure Controller PIC-4001-30 will be in manual mode.
当要求必须严格控制丙烯分压时。需要将HS-4001-25打到丙烯分压控制模式。总反应器压力控制PIC-4001-30需设定为手动。
When Propylene Partial Pressure Controller Deviation Alarm PICA-4001-94 is active, Total Reactor Pressure Controller is automatically set to automatic control mode, the Propylene Partial Pressure Controller switched to manual, and PIC-4001-30 provides the set point for FIC-4001-1. The operator can also switch HS-4001-1 to Total Reactor Pressure Control mode.
当丙烯分压控制器偏差报警PICA-4001-94触发。总反应器压力控制器自动打到自动控制模式，丙烯分压控制器转换为手动模式，PIC-4001-30提供信号给FIC-4001-1.操作员也可将HS-4001-1切换到总反应器压力控制模式。
During a reactor kill, Logic 40-1 overrides the flow controller and closes the control valve. Refer to Logic 40-1.
反应器杀死期间，逻辑40-1无视流量控制器，关闭控制阀。参考逻辑40-1
FI-5230-4 is a control room mounted flow indicator to indicate the quantity of hydrocarbon liquid returned to the reaction system for dewpoint control. The rest of the stream is ransferred to the degassing pot, C-5257, through LV-5257-1.
FI-5230-4 是控制室内安装的流量指示器，为露点控制指示返回到反应系统的液体碳氢化合物的量。其余的量通过LV-5257-1送到脱气罐C-5257。
HS-5230-4 is a control room hand switch to select calculation module FY-4001-1 to include the flow from E-5230.
HS-5230-4 是一个控制室手动开关来选择FY-4001-1计算模块来包括来自E-5230的流量。
Client Project Title Location Project No. Document No.
: : : : : Inner Mongolia China Coal Mengda New Energy Chemical Co., Ltd. 500 KTA Engineering Plastic Project PP Plant Ordos City, Inner Mongolia Autonomous Region 1115120 1115120-00-IA343-1 Rev.: 0 6 of 22 Reactor pressure controller PRC-4001-30 measures and controls the pressure of the reactor and provides a signal to PAH-4001-30, PIC-4001-93 and PY-4001-94A. A high pressure alarm, PAH-4001-30 sounds in the control room when the reactor pressure exceeds the high alarm set point. PAL-4001-30 alarms in the control room and prevents initiation of a kill by loss of cycle gas flow in order to allow operation of K-4003 at low pressure for the purpose of purging the reactor with nitrogen while circulating. Refer to Logic 40-1 for details.
反应器压力控制器 PRC-4001-30测量和控制反应器的压力并提供一个信号给 PAH-4001-30、 PIC-4001-93和 PY-4001-94A。当反应器压力超过高压报警设定点时，一个高压报警， PAH-4001-30在控制室声音报警。PAL-4001-30在控制室报警并在循环期间防止由于循环气流量的丢失而引起的杀死，这是为了允许在低压力下操作K-4003来用氮气吹扫反应器的目的。详见逻辑 40-1。
TIC-4001-25 measures, indicates and records the reactor inlet gas temperature and controls FV-4001-1 when \provides an output signal to selector HS-4001-1. A setpoint tracking feature for TIC-4001-25 is provided. When FIC-4001-1 has been set to \Point Control\4001-1.TDA-4001-25 measures the temperature differential between reactor bed temperature (TICA-4001-21) and the reactor inlet gas temperature (TIC-4001-25). A low differential temperature alarm sounds in the control room.
TIC-4001-25测量、指示和记录反应器入口气体温度并当手动开关HS-4001-1选择\时，TIC-4001-25控制 FV-4001-1 。TIC-4001-25提供一个输出信号给选择器HS-4001-1。给TIC-4001-25 提供一个设定值跟踪功能件。当FIC-4001-1已设定到\控制模式、HS-4001-1设定到 \Control\并且FIC-4001-1投串级时， TIC-4001-25 将提供一个设定值给 FIC-4001-1。 TDA-4001-25测量反应器床温 (TICA-4001-21)和反应器入口温度(TIC-4001-25)之间的温差。一个低温差报警在控制室响。
By controlling propylene partial pressure in the reactor, the reactor pressure will tend to float. A controller is provided to avoid reactor overpressure. The high pressure setpoint is set higher than the normal reactor pressure controller, PICA-4001-30. When reactor pressure exceeds the high pressure setpoint, PIC-4001-93 sends a signal to high signal selector FY-4001-6 which selects the highest signal from either PIC-4001-93 or FIC-4001-6 to control the vent to Product Receiver.
通过控制反应器丙烯分压时，反应器压力将趋向波动。提供一个控制器来避免反应器过压。高压设定值高于正常反应器压力控制器，PICA-4001-30的设定值PIC-4001-93发送一个信号给高信号选择器FY-4001-6，该选择器从PIC-4001-93或FIC-4001-6中选择最高的信号来控制去产品接收仓的排放。
This controller PIC-4001-93 is not a standard PIC type but a proportional only. The output is zero when the PV is equal to the set point and is 100% when the PV is 98.07 kPa above the set point. In between, the performance is linear.
这个控制器 PIC-4001-93 不是一个标准的PIC类型，只是一种比例控制。当 PV 等于设定点时输出为零，而当PV是98.07 kPa高于设定点时，输出是100％。在此之间，是线性关系输出的。
4.0
REACTOR C-4001 ETHYLENE FEED CONTROLLER (CONTROL LOOP DIAGRAM SHEET 7) 反应器C-4001乙烯进料控制器（控制回路图表7）
FRC-4001-2 receives a set point from the ethylene/propylene concentration ratio controller, AIC-4001-16, and controls the ethylene feed flow. AY-4001-16 divides the ethylene concentration by the propylene concentration (from AI-4001-15) to provide the ratio signal to
the controller, AIC-4001-16. During a reactor kill, Logic 40-1 overrides the controller and closes the control valve. Refer to Logic 40-1 for details.
FRC-4001-2从控制器接收一组乙烯/丙烯浓度比的值,AIC-4001-16,并且控制乙烯进料流量。AY-4001-16将乙烯的浓度从丙烯浓度中划 分开（利用AI-4001-15）并将信号提供给比例控制器AIC-4001-16。当一个反应器停了，连锁40-1忽略控制器并强制关掉控制阀。参考连锁40-1详细说明。
Client Project Title Location Project No. Document No.
: : : : : Inner Mongolia China Coal Mengda New Energy Chemical Co., Ltd. 500 KTA Engineering Plastic Project PP Plant Ordos City, Inner Mongolia Autonomous Region 1115120 1115120-00-IA343-1 Rev.: 0 7 of 22 5.0
REACTOR C-4001 HYDROGEN FEED CONTROLLER (CONTROL LOOP DIAGRAM SHEET 8) 反应器C-4001氢气给定控制器（控制回路图8）
FRC-4001-3A/B/C measures and controls the flow of hydrogen to the reactor. The selected flow controller receives its input from hydrogen/propylene concentration ratio controller AIC-4001-17. AY-4001-17 divides the hydrogen concentration by the propylene concentration (from AI-4001-15) to provide the ratio signal to the controller, AIC-4001-17. During a reactor kill, logic 40-1 overrides the controller FRC-4001-3 A/B and forces valves FV-4001-3A/B closed. HS-4001-3B is used to select the appropriate control system.
FRC-4001-3A/B/C测量和控制反应器氢的流量。此选择流量控制器接受氢/丙烯浓度控制器AIC-4001-17的信号。AY-4001-17将氢的浓度从丙烯浓度中分开（从AI-4001-15中）并将信号提供给比例控制器AIC-4001-17。当一个反应器停了，连锁40-1忽略控制器FRC-4001-3A/B并强制关掉控制阀FV-4001-3A/B。HS-4001-3B用来选择合适的控制模式。
6.0
REACTOR C-4001 NITROGEN FEED CONTROLLER (CONTROL LOOP DIAGRAM SHEET 9)反应器C-4001氮给定控制（控制回路图9）
FRC-4001-4 measures and controls the flow of nitrogen to the reactor. FRC-4001-4 receives its setpoint from the nitrogen concentration controller, AIC-4001-18.
FRC-4001-4测量和控制反应器的氮气流量，FRC-4001-4从氮浓度控制器AIC-4001-18接受信号 7.0 REACTOR C-4001 BED TEMPERATURE CONTROLLER (CONTROL LOOP DIAGRAM SHEET 10)反应器C-4001床层温度控制（控制回路图10）
TIC-4001-21 averages the temperatures from TI-4001-21A and TI-4001-21B, records, and controls the reactor bed temperature by adjusting the setpoint of the cycle water temperature controller, TRC-4002-4. The cycle water temperature controller, TRC-4002-4, controls the outlet water temperature of the cycle gas cooler. The temperature is varied by adjusting the quantity of hot cooling water discharged to the cooling water return system and thereby the quantity of water recycled. TRC-4002-4 receives its control setpoint from the reactor bed temperature controller, TIC-4001-21. Output from TIC-4001-21 is sent to TY-4002-4 which is an output characterizer to linearize temperature control using TV-4002-4.
TIC-4001-21的指示值来自TI-4001-21A 和TI-4001-21B的温度平均值，记录反应器床温并通过调整循环水温度控制器TRC-4002-4的设定值来控制反应器床温。循环水温度控制器TRC-4002-4控制循环气冷却器的水出口温度。温度的变化是通过调整热冷却水去冷却水返回系统的量和去循环的量来实现的。TRC-4002-4接收来自反应器床温控制器TIC-4001-21的输出值做为它的设定值。来自 TIC-4001-21 的输出值被发送到TY-4002-4 ，TY-4002-4是一个输出线性温度特性控制调节阀TV-4002-4。
Client Project Title Location Project No. Document No.
: : : : : Inner Mongolia China Coal Mengda New Energy Chemical Co., Ltd. 500 KTA Engineering Plastic Project PP Plant Ordos City, Inner Mongolia Autonomous Region 1115120 1115120-00-IA343-1 Rev.: 0 8 of 22 8.0 REACTOR C-4001 PURGE CONTROLLER (CONTROL LOOP DIAGRAM SHEET 11) 反应器 C-4001 吹扫控制器 (控制回路图 11)
By controlling the propylene partial pressure in the reactor, the reactor pressure will tend to float. A controller is provided to avoid reactor overpressure. When the reactor pressure exceeds the high pressure setpoint, PIC-4001-93 sends a signal tohigh signal selector FY-4001-6 which selects the highest signal from either PIC-4001-93 or FRC-4001-6 to control the vent to Product Receiver. This controller PIC-4001-93 is not a standard PIC type but a proportional only. The output is zero when the PV is equal to the set point and is 100% when the PV is 98.07 kPa above the set point. In between, the performance is linear.
在控制反应器丙烯分压的情况下，反应器压力将趋向波动。提供一个控制器来避免反应器超压。当反应器压力超过高压设定点时，PIC-4001-93将发送一个信号给高讯号选择器FY-4001-6，FY-4001-6 从PIC-4001-93或FRC-4001-6中选择出高的信号来控制去产品接收仓的排放。这个控制器PIC-4001-93不是一个标准的PIC 类型而是一种比例控制。当PV等于设定点时输出为零而当PV是98.07超过设定点时输出是100％。两者之间的关系是线性的。
FRC-4001-6 measures and controls the cycle gas vent to Product Receiver. Product Receiver PA3H-5013-5 or the Kill System Logic (during Type 1, Type 2 or Type 3 Kill) overrides FRC-4001-6 and closes FV-4001-6.
FRC-4001-6 测量和控制去产品接收仓的循环气排放。产品接收仓的PA3H-5013-5或杀死逻辑系统（在类型1、类型2、类型3）将跨过FRC-4001-6并关闭FV-4001-6。
9.0
SLURRY FEED TANK C-4040 PRESSURE CONTROLLER (CONTROL LOOP DIAGRAM SHEET 12) 料浆给料槽C-4040压力控制（控制回路图12）
PIC-4040-1 is a split range pressure controller that controls PV-4040-1A to add nitrogen to Slurry Feed Tank or PV-4040-1B to vent nitrogen from the tank, depending upon deviation from setpoint. Provide a dead band to avoid constantly opening and closing valves. PI-4040-1 is a local indication of pressure in the feed tank and should be located near the drum hose station.
IC-4040-1是一个分程压力控制器，依据与设定点的偏离来控制PV-4040-1A氮气加入到淤浆进料罐中或控制PV-4040-1B来从罐中排放氮气。提供一个死区来避免频繁的开关阀门。 PI-4040-1 是一个现场的进料罐压力指示并应安装在离桶软管站较近的地点。
10.0
SLURRY FEED TANK C-4047 PRESSURE CONTROLLER (CONTROL LOOP DIAGRAM SHEET 13)料浆给料槽C-4040压力控制（控制回路图13）
PIC-4047-1 is a split range pressure controller that controls PV-4047-1A to add nitrogen to Slurry Feed Tank or PV-4047-1B to vent nitrogen from the tank, depending upon deviation from setpoint. Provide a dead band to avoid constantly opening and closing valves. PI-4047-1 is a local indication of pressure in the feed tank and should be located near the drum hose station.
PIC-4047-1是一个分程压力控制器，依据与设定点的偏离来控制PV-4047-1A氮气加入到淤浆进料罐中或控制PV-4047-1B来从罐中排放氮气。提供一个死区来避免频繁的开关阀门。 PI-4047-1 是一个现场的进料罐压力指示并应安装在离桶软管站较近的地点。
11.0
REACTOR C-4001, C-4301 T2, CATALYST AND ADDITIVE FEED CONTROLLER (CONTROL LOOP DIAGRAM SHEET 14)反应器 C-4001, C-4301 的T2，催化剂和添加剂进料控制器 (控制回路图 14)