廠傢總結熱風爐如何進行保養？保養方法

熱風爐保養，與空氣形成氧溶，達到飽和狀態引起溶氧腐蝕，其腐蝕速度是運行時的十倍，再加上殘留水垢，腐蝕性更加強烈。熱風爐停用後，外界空氣會大量進入爐體系統內，爐體金屬表面附著的水膜，與空氣形成氧溶，達到飽和狀態引起溶氧腐蝕，其腐蝕速度是運行時的十倍，再加上殘留水垢，腐蝕性更加強烈。實踐證明：產生嚴重腐蝕熱風爐多數是停爐期間造成的，因此停用必須采取保養措施。
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. 保持熱風爐中有一定的壓力，約0.05-0.1Mpa,使熱風爐水溫度高於100oC以透水地坪上而又沒有含養的條件下，且鍋內壓力可以阻止外界空氣進入鍋筒。為保持鍋水的溫度，可利用其他熱風爐的蒸氣來加熱鍋水，當單臺熱風爐在保養期間沒有蒸氣來源時，可定在爐膛內生活維持。此法一般用於熱備用熱風爐或停爐時間不超過一周的熱風爐。
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.
折疊編輯本段濕法保養
Wet Maintenance of Folding Editing Section
使法保養是利用一定濃度的堿性溶液於熱風爐內表面金屬接觸，使金屬表面形成堿保護膜，來防止金屬的腐蝕。熱印花地坪風爐停爐後，將鍋水放盡，清楚水垢和煙灰，關閉所有的入孔，手孔，閥門等，與其他運行的熱風爐完全隔離。然後將軟化水制入註入熱風爐至最低水位，再用專用泵將配置好的堿性防腐液註入熱風爐。防腐液的成分是：氫氧化鈉，按每噸鍋水加5-6kg。或碳酸納按每噸鍋水加5-10kg。當腐蝕液全部註入後，開啟給水閥將軟化水灌滿熱風爐（包括過熱器和熱風爐省煤器），直至鍋水從空氣閥中冒出。此時關閉空氣閥和給水閥，再開啟專用泵進行水循环，以使熱風爐內各處的堿性防腐液的濃度混合均勻。在保養期間，應經常作外部檢查，並定時化驗鍋水堿度，若發現液位或堿度下降，應查明原因及時處理，並補加堿液；定期開泵進行水循环，使各處堿液濃度一樣；冬季應防止鍋水凍結，露天熱風爐不能用濕法保養。濕法保養熱風爐恢復運行時，應將鍋水全部放出，重新上軟化水。
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.