LNG工厂自动化控制系统分析及应用
|
摘要
LNG工厂具有生产流程复杂、过程管控严格等特点,又具有低温工程领域对设备设施要求高、温度控制精确等要求。环境温度的大幅度变化、操作幅度过大、上游原料气波动、工艺设备运行稳定性等因素对LNG工厂安全稳定的生产具有一定影响。因此需要针对不同工程工艺和设备情况进行稳定性评估,并通过自动化控制系统进行LNG工厂突发性问题的预警与防范。本文以LNG工厂多级单组分制冷工艺为例,论述了该厂ECS-700智能控制系统。
LNG plant has the characteristics of complex production process and strict process control. It also has high requirements for equipments and facilities and precise temperature control in the field of cryogenic engineering. Large variation of ambient temperature, excessive operation range, fluctuation of upstream feed gas and operation stability of process equipment have a certain influence on the safe and stable production of LNG plant. Therefore, it is necessary to evaluate the stability of different engineering processes and equipments,and to alarm and prevent the sudden problems of LNG plant through automatic control system. In this paper,taking the multi-stage one-component refrigeration process of LNG plant as an example, the ECS-700 intelligent control system of LNG plant was discussed.
LNG plant has the characteristics of complex production process and strict process control. It also has high requirements for equipments and facilities and precise temperature control in the field of cryogenic engineering. Large variation of ambient temperature, excessive operation range, fluctuation of upstream feed gas and operation stability of process equipment have a certain influence on the safe and stable production of LNG plant. Therefore, it is necessary to evaluate the stability of different engineering processes and equipments,and to alarm and prevent the sudden problems of LNG plant through automatic control system. In this paper,taking the multi-stage one-component refrigeration process of LNG plant as an example, the ECS-700 intelligent control system of LNG plant was discussed.
引文
[1]余青青,曾繁涛,马学民. LNG气化站仪表自动化控制系统设计[J].制造业自动化,2010,32(1):36-38.
[2]付强.LNG(液化天然气)发展及其自动化系统研究[J].化工设计通讯,2016,42(5):127.
[3]吕凯红,杨增华. LNG行业自动化解决方案[J].仪器仪表用户,2013,20(6):80-82+85.
[4]张周卫,苏斯君,汪雅红. LNG系列阀门的研究与开发[J].化工机械,2018,45(5):527-532.
[5]邵志伟,邵珠鹏,常国宾,等. MRC混合制冷液化LNG系统中离心式压缩机控制难点[J].科技经济导刊,2018,26(31):92.
[6]郭琳,魏旭梦. BOG-LNG系统联合运行技术研究[J].云南化工,2018,45(10):47-49.
[7]蒋钦锋,王良浩,杨迎峰.浅谈LNG工厂仪表风多联供应保障系统的优化方案[J].化工设计通讯,2016,42(3):123+137.
[8]杨朋飞,刘逸飞,张典. LNG浸没燃烧式气化器温度控制系统研究[J].石油与天然气化工,2018,47(6):33-37.
[2]付强.LNG(液化天然气)发展及其自动化系统研究[J].化工设计通讯,2016,42(5):127.
[3]吕凯红,杨增华. LNG行业自动化解决方案[J].仪器仪表用户,2013,20(6):80-82+85.
[4]张周卫,苏斯君,汪雅红. LNG系列阀门的研究与开发[J].化工机械,2018,45(5):527-532.
[5]邵志伟,邵珠鹏,常国宾,等. MRC混合制冷液化LNG系统中离心式压缩机控制难点[J].科技经济导刊,2018,26(31):92.
[6]郭琳,魏旭梦. BOG-LNG系统联合运行技术研究[J].云南化工,2018,45(10):47-49.
[7]蒋钦锋,王良浩,杨迎峰.浅谈LNG工厂仪表风多联供应保障系统的优化方案[J].化工设计通讯,2016,42(3):123+137.
[8]杨朋飞,刘逸飞,张典. LNG浸没燃烧式气化器温度控制系统研究[J].石油与天然气化工,2018,47(6):33-37.