给水

But as a result of various reasons,a lot of deaerators fail to guarantee the qualitied deaeration effect,leading to corrosion damage of system,thus seriously influencing the life and safe operation of equipment.To retrofit these deaerators is a task of top priority.

它保证锅炉给水的品质，特别是溶氧量满足设备运行要求；但是由于种种原因，不少除氧器无法保证合格的除氧效果，致使系统腐蚀损害，严重影响设备寿命和安全运行，改造这些除氧器是当务之急。

Deaerator is an essential link in the feed water system of boiler.

在锅炉给水处理工艺过程中，除氧是一个非常关键的环节。

The structure, functions, quality control and manufacturing technology of auxiliary feedwater deaerator for Qinshan Nuclear Power Station, Stage Two are described.

介绍了秦山二期核电工程辅助给水除氧器的结构形式、主要功能、质量保证体系和制造工艺。

The retrofit scheme of internal parts of deaerator put forward in the paper can effectively solve the"exceeding standard" problem of oxygen in water,and bring about significant economic benefit for power plant.

文中提出的除氧器内部改造方案，能够有效地解决给水溶氧超标问题并给电厂带来可喜的经济效益。

The retrofit scheme of internal parts of deaerator put forward in the ***** can effectively solve the"exceeding standard" problem of oxygen in water,and bring about significant economic benefit for power plant.

文中提出的除氧器内部改造方案，能够有效地解决给水溶氧超标问题并给电厂带来可喜的经济效益。

The degression of its control performance will cause the deterioration of the feedwater, in the worst case,will endanger the whole system.

除氧器系统是核电站二回路的重要组成部分，它的控制性能的下降将直接导致给水品质恶化、流量波动，严重时会危及系统安全。

New type of water chemistry for utility drum boiler and its principle and characteristic Two kinds of water chemistry's main principle and characteristic are detailedly analyzed. Against the problem of high eroding speed, high Fe content in feed water and boiler water, high scaling speed, short chemical cleaning interval, needing poisonous chemical deoxidant, etc for drum boiler's deoxidization water chemistry and difficulty of using oxidation water chemistry, a new type of water chemistry is put forward on the basis of analyzing the characteristic of whole power station's water steam cycle system, principle of two kinds of water chemistry and their practical effect in every cycle stage. Considering two water chemistry's merit, a new water chemistry called Limited Oxidation Water Chemistry is put forward, which is a local slight oxidization no-deoxidant water chemistry. And the proposed method's principle, control parameter, applying condition, start-lay up and emergency measures are initially calculated and analyzed.

三、新型汽包炉水化学工况的提出及其原理和特点详细分析了国内外现行两大类水化学工况处理的核心原理和特点，针对现行汽包炉还原性水化学工况处理所存在的系统腐蚀速度相对较大、给水和炉水铁浓度高、锅炉结垢速度快、机组酸洗间隔短、无法避免有毒化学除氧剂的使用以及氧化性水化学工况在汽包炉机组上应用的困难等问题，在详细分析电站整个水蒸汽循环系统的特点、两类水工况处理的原理和对循环中各段处理的实际效果等的基础上，综合两者的优点，提出了一种新型的局部轻微氧化性无除氧剂汽包炉水化学工况－"汽包炉有限氧化性水化学工况"处理原理，并初步计算、分析和确定了该种新型水化学工况的主要工艺控制参数、应用条件、启停与紧急情况处理等。

Assistant system the drug system, deoxidize system and water supply system

辅助系统（加药系统、除氧系统、给水系统等）是否正常。

The technology of deoxygenation of boiler supply water is introduced,such as phisical deoxidizer, chemical deoxidizer,electrochemical deoxidizer, and points out their individual applicable range.

本文分析了现有几种常用的锅炉给水除氧技术，如物理除氧，化学除氧，电化学除氧，并指出这些方法各自不同的适用范围。

The technology of deoxygenation of boiler supply water is introduced,such as phisical deoxidizer, chemical deoxidizer,electrochemical deoxidi......

文章摘要：摘要：本文分析了现有几种常用的锅炉给水除氧技术，如物理除氧，化学除氧，电化学除氧，并指出这些方法各自不同的适用范围。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。