廠傢對熱風爐的燃燒熱值相關介紹分析

據有關資料調查顯示，目前國內低壓工業熱風爐成都收賬設計熱效率一般在70~90%，一般實際運行熱效率在60~80%左透水地坪右，有些甚至在50%以 下，小型低壓工業熱風爐隻要操作、維護得當，可以達到熱風爐廠傢成都找人公司設計熱效率。燃料成都收賬燃燒熱可以以其HHV（高熱值）或LHV（低熱值）表示，高熱值收賬燃燒熱是在燃燒後，生成物成都找人公司水蒸氣已凝結成液態時的燃燒熱，因此加上水凝結時的潛熱。低熱值的燃燒熱則是在燃燒後，生成物的水蒸氣仍維持氣態時的燃燒熱，不考慮水凝結時的潛熱。
According to the survey of relevant data, the design thermal efficiency of domestic low-pressure industrial hot stoves is generally 70-90%, and the actual operation thermal efficiency is about 60-80%, some even less印花地坪 than 50%. As long as the small low-pressure industrial hot stoves are properly operated and maintained, they can achieve the design thermal efficiency of hot stoves manufacturers. The heat of combustion of fuel can be expressed by its HHV (high calorific value) or LHV (low calorific value). The heat of combustion of high calorific value is the heat of combustion when the water vapor of the product has condensed into liquid after combustion, so the latent heat of water condensation is added. The combustion heat of low calorific value is that after combustion, the water vapor of the product maintains the combustion heat of gaseous state, regardless of the latent heat of water condensation. 燃料熱值的選用會影響其能量轉換效率的計算。在歐洲一燃料可產生的能量是其低熱值表示，不考慮水凝結時的潛熱，以若此方式計算冷凝式熱風爐（英語：condensing boiler）的“熱效率”，其數值可能會超過100%，其原因是其工作原理會利用到部份水凝結時的潛熱，但計算輸入能量時未考慮此部份所造成，不違反熱力學第一定律。在歐洲以外的國傢，一燃料可產生的能量是其高熱值表示，已考慮水凝結時的潛熱，以此為基礎計算能量轉換效率，其數字就不可能超過100%。
The selection of fuel calorific value will affect the calculation of energy conversion efficiency. In Europe, the energy produced by a fuel is expressed by its low calorific value, without considering the latent heat of water condensing. If the "thermal efficiency" of a condensing boiler is calculated in this way, the value may exceed 100%. The reason is that the latent heat of partial water condensing is utilized in its working principle, but the calculation of transportation is carried out. When we enter the energy, we do not consider this part, and do not violate the first law of thermodynamics. In countries other than Europe, the energy produced by a fuel is expressed by its high calorific value. The latent heat of water condensation has been taken into account. Based on this, the calculation of energy conversion efficiency can not exceed 100%.
1、增加有效利用熱量，減少熱風爐、排煙熱損失和機械未完全燃燒損失。
1, increase the effective use of heat, reduce the heat loss of hot stove, exhaust gas and mechanical incomplete combustion loss.
1）降低空氣預熱器的漏風率，特別是回轉式空氣預熱器的漏風率。
1) reduce the air leakage rate of the air preheater, especially the air leakage rate of the rotary air preheater.
2）嚴格控制熱風爐鍋水水質指標，當水冷壁管內含垢量達到400mg/m 時，應及時酸洗。
2) Strictly control the water quality index of hot-blast stove. When the scale content in the water wall tube reaches 400 mg/m, pickling should be done in time.
3）盡量燃用含硫量低的優質煤，降低空氣預熱器入口空氣溫度，現代大容量發電熱風爐均裝有空氣預熱器，防止空氣預熱器冷前端受熱面上結露，導致空氣預熱器低溫腐蝕。
3) Burning high-quality coal with low sulphur content as far as possible to reduce the inlet air temperature of air preheater. Air preheaters are installed in modern large-capacity power generation hot stoves to prevent condensation on the heating surface of the cold front end of air preheater, resulting in low-temperature corrosion of air preheater.
4）根據熱風爐負荷及時間調整燃燒工況，合理配風，盡可能降低爐膛火焰中心位置，讓煤在爐膛內充分燃燒。
4) According to the load and time of the hot blast stove, adjust the combustion conditions, rationally distribute the air, reduce the central position of the furnace flame as far as possible, and make the coal fully burn in the furnace.
5）根據原煤揮發分及時間調整給煤量，使煤量維持最佳值。
5) adjust the amount of coal according to the volatile content and time of the raw coal so as to maintain the best value of coal.
6）降低成都找人公司的散熱損失，主要加強成都***管道及本體保溫層的維護和檢修。
6) To reduce the heat loss of hot blast stove, the maintenance and repair of hot blast stove pipeline and insulation layer are mainly strengthened.
2、燃煤科學配比、工藝操作嚴謹、改善配風、添加添加劑等。
2. Scientific proportioning of coal, rigorous process operation, improvement of air distribution and addition of additives.