炉膛压力过高或过低时立即报警, 此时运行人员误操作, 系统将不予响应；并且在CRT屏幕上进行操作提示；
苛化工段控制方案
将碱回收各部分作为一个整体对象控制
l 按工艺流程的自动化过程由DCS系统协调完成，达到系统的平衡
l 保证工艺设备安全、可靠、高效运行和起停
实现整个工段控制系统的测点信息、实时数据和系统资源的共享，提高工艺设备运行的技术经济效益
l 工艺设备在额定参数的上限运行,使工艺设备处于1佳运行工况,降低能耗
l 提高自动化投入率，提高可靠性，减少误操作，降低事故率
完善的操作指导和事故分析手段
l 工艺设备的运行工况可由很多监测参数反映出来,当运行工况出现异常时,一方面进行超驰功能的
l 实现,一方面提供相关参数、趋势、图表通知运行人员及时处理
l 操作记录打印、报警打印、事故追忆打印、周期性报表等功能，有助与工艺设备的日常管理和事
When the furnace pressure is too low or the system operates incorrectly, the operator will not respond immediately; And give operation prompt on CRT screen;
Control scheme of causticization section
All parts of alkali recovery are controlled as a whole
L the automation process according to the process flow is coordinated by DCS system to achieve the balance of the system
L ensure the safe, reliable and efficient operation and start stop of process equipment
Realize the sharing of measuring point information, real-time data and system resources of the whole section control system, and improve the technical and economic benefits of process equipment operation
L the process equipment operates at the upper limit of rated parameters to make the process equipment in the best operating condition and reduce energy consumption
L improve automation input rate, improve reliability, reduce misoperation and reduce accident rate
Perfect operation guidance and accident analysis means
L the operating conditions of the process equipment can be reflected by many monitoring parameters. When the operating conditions are abnormal, on the one hand, the override function is carried out
L realize, on the one hand, provide relevant parameters, trends and charts, and notify the operators to deal with them in time
L operation record printing, alarm printing, accident recall printing, periodic report and other functions are helpful to the daily management and management of process equipment
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