NALCO水质监测培训资料.pptVIP

Prepared by: Stanley Ng Interpreting Nalco PSRs如何理解 Nalco服务报告 Objective 目的 Objective: to provide a basic understanding of the terms, definition used in the PSRs 介绍服务报告上使用的术语的定义 Benefits: to improve the communication of PSR content to readers from the writer. 提高服务报告阅读者和书写者之间的相互沟通 Customer Requirements 客户要求 Your want to: 您希望 be briefed on the current status of your systems(focusing on concerns and non-conformance) 对系统的目前运行状况进行简要的概述 to know what is the impact and implication of them(non-conformance) on the process 知道各分析数据对生产有什么影响 Customer Requirements be given alternatives to resolve it if you decided to 提供解决方法 be briefed the detail action and recommendation to be taken 简述具体的建议和步骤 how to do? 如何作 when to be done? 何时完成 what is required? 有何需要 etc. 等等 Cycle of Operations/concentration浓缩倍数 Cycles =the number of times the concentration of impurities in boiler against the feed-water 浓缩倍数＝炉水中杂质与给水中杂质浓度之比 可测定氯根，TDS，或任何可溶性离子来计算。 例如： 给水种氯离子25ppm，锅炉水中氯离子250ppm 浓缩倍数= 250/25=10 Cycle of Operations/concentration Optimum cycle is individual for each plant, depending on: 各工厂的最佳浓缩倍数各不相同，取决于 silica level and control 二氧化硅浓度 TDS in feedwater 给水的总溶解固体 suspended solids in feedwater 给水中的悬浮固体 boiler cleanliness 锅炉内部的清洁程度 hardness leakage in feedwater 给水中的硬度 Cycle of Operations/concentration Practically, other factors to consider are: 在实际操作上，还应考虑其它因数： boiler blow-down control practice(boiler attendant) 锅炉排污控制 （锅炉工的操作习惯) availability of intermittent auto blow-down devices 锅炉是否装备自动间歇排污设备 steam demand vs. boiler output 蒸汽产量与需求量之比 steam purity and application 蒸汽的纯度要求 Cycle of Operations/concentration What if Cycle is high: 如果浓缩倍数高 lesser chemical used 药剂消耗量少 higher TDS 溶解固体浓度高 higher scaling tendency 结垢趋势加强 lesser feed-water demand 给水量少 lesser fuel demand 燃料用量下降 Cycle of Operations/concentration What if Cycle is Low: 如果浓缩倍数低 wasting water and fuel 浪费水和燃料 higher chemical cost 药剂用量上升 boiler will be cleaner 锅炉内部更干净 more blow-do