锅炉给水

The oxygen is the metals that the water supply main causticity the material boiler of the system and boiler would decay the thermodynamic energy system for aquatic deliquescence oxygen.

氧是给水系统和锅炉的主要腐蚀性物质，锅炉给水中的溶解氧会腐蚀热力系统的金属。

This paper states the theory of supplying water deaeration for industry boiler and analyses the common techniques of deaeration by heating, vacuum and adsorption.

阐述了工业锅炉给水除氧的原理，并对常用的热力除氧、真空除氧、解吸除氧等技术进行了分析。

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。

To determine the content of deoxidant timely and precisely is urgently need in the operation of boilers.

锅炉给水除氧剂含量的多少直接影响除氧效果的好坏，为此需及时准确地测定给水中除氧剂的含量。

So the proposed method in this dissertation not only meet the requirements for fossil-fuel unit set in GB/T 12145-1999, but also can effectively restrain condensate and feed water system corrosion. Thereby the proposed method can reduce the loss by corrosion's leading accident, lower Fe content in boiler feed water, slow the boiler's scaling speed, delay boiler's chemical cleaning interval, effectively enhance unit's reliability, usability and using life and solve the problem of poisonous chemical deoxidant. So the proposed method can economize substantial expense for power plant.

所以，本文所提出的汽包炉有限氧化性水化学工况不但能满足GB/T12145-1999中对火力发电机组及蒸汽动力设备的要求，而且可有效抑制凝结水和给水系统的腐蚀，减少因这些部位腐蚀损坏而引发的事故停机损失，降低锅炉给水中的金属含量，减轻炉内的结垢速度，延长锅炉的酸洗间隔，有效提高机组的可靠性、可用率和使用寿命，同时也解决了有毒化学除氧剂的使用问题，为电厂节省大笔运行费用。

In the light of the problem of the superstandard dissolved oxygen in the feed water of the direct air-cooled unit, analyzes on the causes of the superstandard dissolved oxygen in the feed water of the power plant s boilers, and puts forward some measures for the corresponding treatment.

针对直接空冷机组给水溶氧在实际运行中存在的超标问题，分析了造成电厂锅炉给水溶氧超标的原因并给出了相应的处理措施。

It uses middle extracted steam from steam turbine to heat the feetwater of boiler to the saturate temperature under working pressure of deaerator, so as to remove dissolved oxygen and other gases. To prevent or slow boiler and steam turbine as well as pipeline from corroding, and extend them service life, to ensure the operation of the power plant under safety economic condition. The high-pressure deaeator of 235t/h is a kind of mixture-type heater, which shall match with 55 MW units, whose deaerated head adopts a kind of new-style stuffing way with rotation film.

它是利用汽轮机的中间抽汽将锅炉给水加热到除氧器工作压力下的饱和温度，以达到除去给水中的溶解氧和其它气体，防止或减缓锅炉、汽机及其管道的腐蚀，延长其使用寿命，确保电厂的安全经济运行。235t/h高压除氧器是配55MW机组的混合式加热器。

Water Fa Zhu, Vice boiler valve, compound feed water control valve Control requirements: control the boiler water, the maintenance of boilers and steam flow of liquid.

给水阀主、副锅炉给水阀、复合型给水调节阀控制要求：控制锅炉进水，维持汽锅液位与蒸汽流量。

The electrical conductivity and pH is basic guide line among boiler steam and water supply in the power plant. Two kind of instrument application in very abroad.

电导率和pH值是锅炉蒸汽和锅炉给水等电厂用水中最基本的指标，两种仪表在电厂中应用最为广泛。

High pressure supply water heater uses discharge steam from steam turbine to heat supply water of boiler, and makes supply water to reach required temperature so as to improve thermal efficiency of power plant and to ensure output of the unit.

高压给水加热器是利用来自汽轮机的抽汽，来加热锅炉给水，使给水达到所要求的温度，从而提高电厂的热效率和保证机组的出力。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。