摘要
为处理聚酯装置的生产尾气及生产废水,在原流程基础上增设工艺水汽提工段,工艺废水经汽提塔自上而下处理,同时汽提塔塔底通入低压蒸汽,处理后的含有有机物的尾气送入热媒炉燃烧,废水直接排放至污水处理。详细介绍了聚酯装置工艺水汽提工段的流程概貌,并分析为保证生产安全需要设置的相关逻辑联锁,最终以符合ANSI/ISA—5.2—1976标准的逻辑图的形式对其进行表述。
To dispose waste water and exhaust gas from PET plant, a process water stripper facility is put up in the original process. The process waste water flows from the top to the bottom through the stripper column. Low pressure steam is blown counter-current through the process water stripper column at the same time. The treated off-gas containing organics is sent to HTM heater for incineration. The waste water is drained to wastewater treatment facility. Detailed flowchart of process water stripper facility is introduced, and relevant logic interlock setting for ensuring plant safe production requirements are evaluated. It is expressed with the form of logic flowchart conforming to ANSI/ISA-5.2-1976 standard.
出处
《石油化工自动化》
CAS
2013年第2期13-16,共4页
Automation in Petro-chemical Industry
关键词
工艺水汽提
尾气燃烧
逻辑联锁
process water stripper facility
off-gas incineration
logic interlock
