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陶瓷蓄熱體 - 蓄熱性能下降的緣由

陶瓷蓄熱體 - 蓄熱性能下降的緣由

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  • 發(fā)布時間:2022-01-11 11:11
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陶瓷蓄熱體 - 蓄熱性能下降的緣由

  • 分類:新聞資訊
  • 作者:
  • 來源:
  • 發(fā)布時間:2022-01-11 11:11
  • 瀏覽量:

蓄熱體是一個關鍵部件。但從實際應用來看,陶瓷蓄熱體壽命往往不盡人意,原因是多方面的。陶瓷蓄熱體蓄熱性能下降表現(xiàn)在以下方面: 1.破損。煙氣與空氣對蓄熱體反復沖刷,導致福建陶瓷蓄熱體的溫度出現(xiàn)頻繁變化,對于蓄熱箱中某一點來講,其溫度要周期性地快速升高和降低100—200℃,這種熱沖擊對蓄熱體材料有一定的破壞作用。其耐急冷急熱性能往往不好,容易出現(xiàn)破損現(xiàn)象。 2.燒損。多室(兩室)蓄熱式加熱爐中,由于空氣和天燃氣的噴嘴很大,空氣、天燃氣氣流混合效果不理想,會導致不完全燃燒。當殘存的空氣和天燃氣進入蓄熱體狹小的空間內混合,導致二次燃燒從而損壞蓄熱體。 3.熔化軟化。因煙氣中含有氧化鐵等雜質,不斷與蓄熱體接觸,在燃燒室高溫條件下,形成低熱熔物,降低材料的軟熔溫度。后面造成軟熔材料堵塞氣流通道,造成氣流不通。

蓄熱體是一個關鍵部件。但從實際應用來看,陶瓷蓄熱體壽命往往不盡人意,原因是多方面的。

陶瓷蓄熱體蓄熱性能下降表現(xiàn)在以下方面:

 

1.破損。煙氣與空氣對蓄熱體反復沖刷,導致福建陶瓷蓄熱體的溫度出現(xiàn)頻繁變化,對于蓄熱箱中某一點來講,其溫度要周期性地快速升高和降低100—200℃,這種熱沖擊對蓄熱體材料有一定的破壞作用。其耐急冷急熱性能往往不好,容易出現(xiàn)破損現(xiàn)象。

 

2.燒損。多室(兩室)蓄熱式加熱爐中,由于空氣和天燃氣的噴嘴很大,空氣、天燃氣氣流混合效果不理想,會導致不完全燃燒。當殘存的空氣和天燃氣進入蓄熱體狹小的空間內混合,導致二次燃燒從而損壞蓄熱體。

 

3.熔化軟化。因煙氣中含有氧化鐵等雜質,不斷與蓄熱體接觸,在燃燒室高溫條件下,形成低熱熔物,降低材料的軟熔溫度。后面造成軟熔材料堵塞氣流通道,造成氣流不通。

 

The regenerator is a key component. However, from the practical point of view, the life of ceramic regenerators is often unsatisfactory, for a variety of reasons.

The thermal storage performance of ceramic regenerators is reduced in the following aspects:

 

1. Damaged. Flue gas and air repeatedly wash the regenerator, causing frequent changes in the temperature of the Fujian ceramic regenerator. For a certain point in the regenerator, the temperature should be periodically increased and lowered 100-200 °C periodically. The thermal shock has a certain destructive effect on the heat storage material. Its resistance to quenching and rapid heat is often poor, and it is prone to breakage.

 

2. Burning. In a multi-chamber (two-chamber) regenerative heating furnace, due to the large nozzles of air and natural gas, the mixing effect of air and natural gas airflow is not ideal, resulting in incomplete combustion. When the remaining air and natural gas enter the space where the regenerator is narrow, the secondary combustion causes secondary combustion to damage the regenerator.

 

3. Melt and soften. Because the flue gas contains impurities such as iron oxide, it continuously contacts the regenerator, and under the high temperature condition of the combustion chamber, a low hot melt is formed to lower the reflow temperature of the material. The back causes the reflow material to block the airflow path, causing the airflow to fail.

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