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厂家总结热风炉如何进行保养?保养方法

2018-12-04 14:27:18 常州市星火铝艺制品有限公司 阅读

热风炉保养,与空气形成氧溶,达到饱和状态引起溶氧腐蚀,其腐蚀速度是运行时的十倍,再加上残留水垢,腐蚀性更加强烈。热风炉停用后,外界空气会大量进入炉体系统内,炉体金属表面附着的水膜,与空气形成氧溶,达到饱和状态引起溶氧腐蚀,其腐蚀速度是运行时的十倍,再加上残留水垢,腐蚀性更加强烈。实践证明:产生严重腐蚀热风炉多数是停炉期间造成的,因此停用必须采取保养措施。

Hot blast stove maintenance, oxygen dissolution with air, saturated state caused dissolved oxygen corrosion, its corrosion rate is 10 times faster than running, coupled with residual scale, corrosion is more intense. After stopping the hot blast stove, the outside air will enter the furnace body system in large quantities. The water film attached to the metal surface of the furnace body will dissolve with the air to form oxygen, which will cause dissolved oxygen corrosion when it reaches the saturation state. The corrosion rate is ten times faster than that when it is running, and the residual scale will make the corrosion more intense. Practice has proved that most of the hot blast stoves with serious corrosion are caused during shutdown, so maintenance measures must be taken when stopping operation. 保持热风炉中有一定的压力,约0.05-0.1Mpa,使热风炉水温度高于100oC以上而又没有含养的条件下,且锅内压力可以阻止外界空气进入锅筒。为保持锅水的温度,可利用其他热风炉的蒸气来加热锅水,当单台热风炉在保养期间没有蒸气来源时,可定在炉膛内生活维持。此法一般用于热备用热风炉或停炉时间不超过一周的热风炉。

Maintain a certain pressure in the hot blast stove, about 0.05-0.1 Mpa, so that the hot blast stove water temperature is higher than 100oC without nutrients, and the pressure in the pot can prevent the outside air from entering the pot. In order to maintain the temperature of pot water, steam from other hot stoves can be used to heat pot water. When a single hot stove has no steam source during maintenance, it can be fixed in the furnace to maintain life. This method is generally used for hot standby stoves or stoves with shutdown time not exceeding one week.

折叠编辑本段湿法保养

Wet Maintenance of Folding Editing Section

使法保养是利用一定浓度的碱性溶液于热风炉内表面金属接触,使金属表面形成碱保护膜,来防止金属的腐蚀。热风炉停炉后,将锅水放尽,清楚水垢和烟灰,关闭所有的入孔,手孔,阀常州铝艺大门等,与其他运行的热风炉完全隔离。然后将软化水制入注入热风炉至最低水位,再用专用泵将配置好的碱性防腐液注入热风炉。防腐液的成分是:氢氧化钠,按每吨锅水加5-6kg。或碳酸纳按每吨锅水加5-10kg。当腐蚀液全部注入后,开启给水阀将软化水灌满热风炉(包括过热器和热风炉省煤器),直至锅水从空气阀中冒出。此时关闭空气阀和给水阀,再开启专用泵进行水循环,以使热风炉内各处的碱性防腐液的浓度混合均匀。在保养期间,应经常作外部检查,并定时化验锅水碱度,若发现液位或碱度下降,应查明原因及时处理,并补加碱液;定期开泵进行水循环,使各处碱液浓度一样;冬季应防止锅水冻结,露天热风炉不能用湿法保养。湿法保养热风炉恢复运行时,应将锅水全部放出,重新上软化水。

Making use of a certain concentration of alkaline solution to contact the metal on the inner surface of the hot blast stove to form an alkali protective film on the metal surface to prevent metal corrosion. After stopping the stove, drain the water, clear the scale and soot, close all the entrance holes, hand holes, valves and so on, and completely isolate them from other running stoves. Then the softening water is injected into the hot blast stove to the lowest water level, and the alkaline anticorrosive liquid is injected into the hot blast stove with a special pump. The composition of the preservative is: sodium hydroxide, 5-6 kg per ton of pot water. Or add 5-10 kg of sodium carbonate per ton of pot water. When all the corrosive liquid is injected, the softening water is filled with hot blast stove (including superheater and economizer) by opening the feed valve until the pot water comes out of the air valve. At this time, close the air valve and water supply valve, and then open the special pump for water circulation, so as to make the concentration of alkaline preservatives in the hot blast stove mix evenly. During the maintenance period, external inspection should be carried out regularly and the alkalinity of the pot water should be tested regularly. If it is found that the level or alkalinity of the pot water decreases, the causes should be identified and treated in time, and alkali liquor should be added. Water circulation should be carried out regularly so that the concentration of alkali liquor is the same everywhere. In winter, the pot water should be prevented from freezing and the open-air hot stove can not be maintained by wet method. When the hot blast stove in wet maintenance is restored to operation, all the pot water should be released and softened again.



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